JP2015186566A - Medical instrument cleaning unit, handpiece holder and suction tube holder - Google Patents

Abstract

Disclosed is a medical instrument cleaning unit capable of preventing damage to a medical instrument when cleaning the medical instrument such as a dental handpiece with a cleaning device. A medical instrument cleaning unit (20) includes a cleaning liquid supply frame (22) and a handpiece holder (24) attached to a spout (33) of the cleaning liquid supply frame (22). The handpiece holder 24 is connected to the spout 33 so as to be detachably connected to the connecting tube portion 41, the holding tube portion 42 that detachably holds the dental handpiece 100, and the connecting tube portion 41 and the holding tube portion 42 communicate with each other. A flow path 48 is provided. Further, the handpiece holder 24 is provided with a metal mesh filter 49 in the middle of the flow path 48, and the foreign matter from the cleaning liquid, the rinsing liquid, the hot water for sterilization, and the sterilized air ejected toward the dental handpiece 100. Remove. [Selection] Figure 3

Description

  The present invention relates to a medical instrument cleaning unit for cleaning a dental handpiece and the like using a cleaning device.

  A dental handpiece that cuts and polishes teeth includes a head that includes an air turbine that rotates a tool and a water outlet, and a base that is gripped by an operator. An air supply pipe for supplying air to the air turbine and a water supply pipe for supplying water to the jet outlet are formed in the base, and an air supply port of the air supply pipe and a water supply of the water supply pipe are provided at the end of the base. The mouth is exposed. In such a dental handpiece, when the supply of air or water is stopped, saliva, blood or cutting powder in the oral cavity of the patient may enter the air supply pipe or water supply pipe from the head side. Accordingly, the dental handpiece used for the treatment is cleaned by the cleaning device. Further, regarding a dental suction tube used by being attached to the tip of a suction device that sucks saliva in the patient's oral cavity, the patient's saliva or blood may adhere to the tube. Therefore, the dental suction tube used for the treatment is cleaned by the cleaning device.

  In cleaning the dental handpiece and the dental suction tube, it is necessary to vigorously pour the cleaning liquid into these tubes in order to remove dirt in the air supply tube and the water supply tube. Here, in patent document 1, when washing | cleaning a tubular medical device (medical tube) with a washing | cleaning apparatus, while holding this cyclic | annular medical device, from the washing | cleaning-liquid supply port provided in the washing | cleaning chamber of the washing | cleaning apparatus. An instrument holder is described that guides the supplied cleaning liquid to the opening of the tubular medical instrument.

JP 2005-13511 A

  Even when cleaning the dental handpiece, the dental handpiece is held and the cleaning liquid supplied from the cleaning liquid supply port provided in the cleaning chamber of the cleaning device is supplied to the supply port of the supply pipe and the water supply of the supply pipe By using a tool holder that leads to the mouth, dirt in the air supply pipe and the water supply pipe can be removed. Here, the dental handpiece has an elongated shape so as to be easily inserted into the oral cavity of the patient. Moreover, it is miniaturized so that the operator can easily hold it. Therefore, the air supply pipe and the water supply pipe are thin, and if a foreign object enters the air supply pipe or the water supply pipe during cleaning, the dental handpiece may be damaged.

  Also, when cleaning the dental suction tube, if using a tool holder that holds the dental suction tube and guides the cleaning liquid supplied from the cleaning liquid supply port provided in the cleaning chamber of the cleaning device into the pipe, It becomes possible to remove dirt in the tube. However, for example, when cleaning the inside of a dental suction tube bent in a “<” shape, if the cleaning solution is poured into the tube vigorously, the cleaning solution hits the bent portion of the inner peripheral surface of the dental suction tube. The dental suction tube may come off from the instrument holder due to the momentum of the cleaning liquid. If the dental suction tube is detached from the instrument holder and falls into the cleaning chamber of the cleaner, the dental suction tube may be damaged.

  SUMMARY OF THE INVENTION In view of the above-described problems, the present invention provides a medical instrument cleaning unit capable of preventing damage to these medical instruments when cleaning a dental handpiece and a dental suction tube with a cleaning device. Is to provide.

  In order to solve the above-described problem, the medical instrument cleaning unit includes a connecting port connected to a cleaning solution supply port provided in a cleaning chamber of a cleaning device, and a cleaning solution connected to the cleaning solution supply port via the connection port. A supply channel, a cleaning solution supply frame having a cleaning solution outlet for ejecting cleaning solution pumped from the cleaning solution supply port in communication with the cleaning solution supply channel, and a connecting pipe portion detachably connected to the cleaning solution outlet. A holding cylinder portion that detachably holds a device to be cleaned, and an appliance holder that includes a cleaning liquid channel that communicates the connecting tube portion with a central hole of the holding cylinder portion, A handpiece holder for holding a base portion opposite to the head of the handpiece on the inner peripheral side of the holding cylinder portion, and the handpiece holder is made of a metal mesh frame in the middle of the cleaning liquid flow path. Characterized in that it comprises a filter.

  In the present invention, the handpiece holder holds the base of the dental handpiece on the inner peripheral side of the holding cylinder. Therefore, the water supply pipe and the air supply pipe formed inside the base portion of the dental handpiece and the cleaning liquid supply port of the cleaning device can be communicated with each other via the cleaning liquid supply frame and the handpiece holder. Moreover, since the handpiece holder includes a mesh filter in the middle of the cleaning liquid flow path, foreign substances can be removed from the cleaning liquid sprayed toward the dental handpiece. Therefore, the inside of the dental handpiece can be cleaned while preventing foreign matter from entering the dental handpiece. Here, it is also conceivable that the mesh filter is made of ceramics. In this case, ceramic powder is generated from the mesh filter, and this powder may become a foreign substance and enter the dental handpiece. In contrast, in the present invention, since the mesh filter is made of metal, generation of powder from the mesh filter can be prevented.

  In the present invention, the handpiece holder has an annular shape that removably supports the cylinder body in a state where the cylinder body including the holding cylinder part, the connecting pipe part, and the connecting pipe part and the holding cylinder part are in communication with each other. A cylindrical support part, a case including an annular filter support part that detachably supports the mesh filter between the connecting pipe part and the cylindrical support part, and a detachably attached to the case It is desirable to provide a cap that fixes the cylinder to the cylinder support. In this way, the mesh filter can be replaced by removing the cap from the case and removing the cylinder. Here, since the mesh filter is made of metal, it can be reused by removing foreign matter adhered by ultrasonic cleaning or the like.

  In this invention, it has a 2nd instrument holder as said instrument holder, and the said 2nd instrument holder inserts the said holding | maintenance cylinder part in the hollow part of a dental suction tube, and hold | maintains the said dental suction tube A suction tube holder, and the suction tube holder includes a stopper on a radially outer side of the holding tube portion, and the stopper is connected to the dental suction tube when the holding tube portion is inserted into the dental suction tube. It is desirable to exert an urging force that abuts the tube and elastically deforms outward in the radial direction to urge the dental suction tube toward the holding tube portion.

If such a 2nd instrument holder is provided, a dental suction tube can be wash | cleaned with a dental handpiece. Here, the suction tube holder holds the dental suction tube in a state where the holding cylinder portion is inserted into the dental suction tube. Therefore, in the case where the dental suction tube is bent in a "<" shape, the suction tube holder is in a state where the holding cylinder portion is inserted into the tube portion extending linearly in the dental suction tube, The dental suction tube will be held. In this case, when the cleaning liquid supplied from the cleaning liquid supply port is ejected from the central hole of the holding cylinder part, the cleaning liquid hits a bent portion of the inner peripheral surface of the dental suction pipe, and the dental suction pipe is held by the momentum of the cleaning liquid. May move to the tip side of the part and come off. With respect to such a problem, the suction tube holder is provided with a stopper that exerts a biasing force that biases the dental suction tube toward the holding cylinder portion, so that the dental suction tube can be prevented from coming off. Therefore, damage to the dental suction tube due to falling can be prevented.

  In the present invention, it is desirable that the suction tube holder includes a resin covering member capable of covering an outer peripheral surface portion of the stopper facing the holding cylinder portion. If such a covering member is provided, the dental suction tube will not be damaged when the stopper presses the dental suction tube against the holding cylinder portion.

  In the present invention, the suction tube holder has a contact portion capable of contacting a part of the edge of the rear end opening of the dental suction tube from the rear in the insertion direction in which the holding tube portion is inserted into the dental suction tube. It is desirable to provide. If such a contact portion is provided, it is possible to prevent the rear end opening of the dental suction tube from being blocked when the dental suction tube is held in the holding cylinder portion. Therefore, when water droplets remain inside the dental suction tube after cleaning, the water droplets are discharged to the outside of the dental suction tube through an opening portion that is not blocked by the contact portion. Therefore, it becomes easy to dry the inside of the dental suction tube after cleaning.

  In the present invention, the holding tube portion of the suction tube holder penetrates in the direction intersecting the insertion direction at the rear end in the insertion direction in which the holding tube portion is inserted into the dental suction tube, and communicates with the center hole. It is possible to provide a water drain hole. If such a drain hole is provided, if water drops remain inside the dental suction tube held by the holding cylinder part, the water drops are removed from the drain hole through the central hole of the holding cylinder part. It can escape to the side of a connecting pipe part. Therefore, it becomes easy to dry the inside of the dental suction tube after cleaning.

  Next, this invention can be said handpiece holder. According to the handpiece holder of the present invention, the water supply pipe and the air supply pipe in the handpiece holder can be cleaned while preventing foreign matter from entering the inside of the dental handpiece during cleaning. Therefore, it is possible to prevent the dental handpiece from being damaged by the foreign matter.

  Moreover, this invention can be said suction tube holder. According to the suction tube holder of the present invention, it is possible to prevent the dental suction tube from being detached from the suction tube holder during cleaning of the dental suction tube. Therefore, damage to the dental suction tube due to falling can be prevented.

It is a schematic longitudinal cross-sectional view of a washing | cleaning apparatus. It is a perspective view of the unit for medical instrument washing to which the present invention is applied. It is the perspective view and sectional drawing of a handpiece holder. It is the perspective view and sectional drawing of a suction tube holder. It is sectional drawing of another example of a handpiece holder. It is the perspective view and sectional drawing of the suction tube holder of the modification 1. It is the perspective view and sectional drawing of the suction tube holder of the modification 2. It is the perspective view and sectional drawing of the suction tube holder of the modification 3.

  A medical instrument cleaning unit to which the present invention is applied will be described below with reference to the drawings. FIG. 1 is a schematic longitudinal sectional view of the cleaning apparatus. The medical instrument cleaning unit 20 is used by being attached in the cleaning chamber 2 of the medical cleaning apparatus 1 called a washer disinfector. The cleaning operation of the medical device by the cleaning device 1 includes a cleaning process in which the medical device put into the cleaning chamber 2 is cleaned with a cleaning solution containing an enzyme-containing detergent, and the medical device is rinsed with a rinse liquid such as sterilized water. A process, a disinfection process for disinfecting the medical instrument with hot water, and a drying process for sending sterile air that has been sterilized and heated into the cleaning chamber 2 to dry the medical instrument.

  The cleaning device 1 includes a rectangular parallelepiped housing 3 as a whole. On the front surface of the housing 3, an opening / closing door 4 for opening and closing the cleaning chamber 2 partitioned in the housing 3 is provided. A portion near the floor 2b of the rear wall 2a of the cleaning chamber 2 is provided with a first cleaning liquid supply port 5 for supplying a cleaning liquid, a rinsing liquid, and hot water for disinfection. Further, a second cleaning liquid supply port 6 for supplying a cleaning liquid, a rinsing liquid, and hot water for disinfection is provided in a portion of the rear wall 2a of the cleaning chamber 2 near the ceiling 2c. Furthermore, a third cleaning liquid supply port 7 for supplying a cleaning liquid, a rinsing liquid, and hot water for disinfection is provided in the central portion of the rear wall surface 2a of the cleaning chamber 2 in the vertical direction.

An air supply port 8 for supplying sterile air is provided on the side of the third cleaning liquid supply port 7. In addition, an air outlet (not shown) for supplying aseptic air is provided in the side wall portion of the cleaning chamber 2. The aseptic air supplied from the air supply port 8 and the air blowout port is obtained by heating air taken from the outside via a HEPA (high efficiency particulate air) filter by a heater (not shown).

  The rear wall 2 a of the cleaning chamber 2 is provided with an exhaust port 9 at a portion adjacent to the lower side of the second cleaning liquid supply port 6. Moisture evaporated in the cleaning chamber 2 in the drying step is discharged from the exhaust port 9 together with the sterilized air supplied from the air supply port 8 and the air outlet.

  A lower cleaning liquid spreader 10 is attached to the first cleaning liquid supply port 5. An upper cleaning liquid spreader 11 is attached to the second cleaning liquid supply port 6. Each of the lower cleaning liquid spreader 10 and the upper cleaning liquid spreader 11 includes a cleaning liquid supply pipe 12 extending horizontally in the apparatus front-rear direction Y, and a rod-shaped rotary nozzle 13 rotatably attached to the front end portion of the cleaning liquid supply pipe 12. ing. Each cleaning liquid supply pipe 12 has a rear end connected to the cleaning liquid supply ports 5 and 6, respectively. The rotating nozzle 13 of the lower cleaning liquid spreader 10 includes a plurality of nozzles 14 on the upper portion of the outer peripheral surface. The rotary nozzle 13 of the upper cleaning liquid spreader 11 includes a plurality of nozzles 14 on the lower portion of the outer peripheral surface. When cleaning liquid, rinsing liquid or hot water for sterilization is supplied from the cleaning liquid supply ports 5 and 6 to the rotary nozzle 13 via the cleaning liquid supply pipe 12, each rotary nozzle 13 is supplied from the nozzle 14 for cleaning liquid, rinsing liquid or disinfectant. It is rotated horizontally by the pressure of the supplied liquid while jetting hot water.

  A rectangular mesh rack 15 made of stainless steel is disposed above the lower cleaning liquid spreader 10. A medical instrument cleaning unit 20 is attached to the central portion of the cleaning chamber 2 in the vertical direction.

(Medical instrument cleaning unit)
FIG. 2 is a schematic perspective view of the medical instrument cleaning unit 20. FIG. 3A is a perspective view when the handpiece holder 24 is attached to the cleaning liquid supply frame 22 as viewed from above, and FIG. 3B is a cross-sectional view thereof. The medical instrument cleaning unit 20 includes a rectangular mesh rack 21, a cleaning liquid supply frame 22 that is integrally attached to the mesh rack 21 at a central portion in the apparatus width direction X orthogonal to the apparatus front-rear direction Y, and a cleaning liquid supply frame 22. Is provided with a rod-like rotary nozzle 23 attached thereto. The medical instrument cleaning unit 20 includes a handpiece holder (instrument holder) 24 and a suction tube holder (second instrument holder) 25 that are detachably attached to the cleaning liquid supply frame 22. In the state shown in FIG. 2, one handpiece holder 24 and one suction tube holder 25 are attached to the cleaning liquid supply frame 22, but in actuality, a plurality of hands are arranged according to the number of medical instruments to be cleaned. A piece holder 24 and a plurality of suction pipe holders 25 are attached to the cleaning liquid supply frame 22.

The cleaning liquid supply frame 22 includes a first frame portion 26 extending in the apparatus width direction X, a second frame portion 27 extending in the apparatus front-rear direction Y from one end portion of the first frame portion 26, and from the middle of the first frame portion 26. A third frame portion 28 extending in the apparatus front-rear direction Y is provided in parallel with the second frame portion 27. Further, the cleaning liquid supply frame 22 includes a connecting frame portion 29 that connects the second frame portion 27 and the third frame portion 28 at the central portion in the front-rear direction.

  A portion of the first frame portion 26 between the second frame portion 27 and the third frame portion 28 is provided with a first connection port 30 that is detachably connected to the third cleaning liquid supply port 7. The first connection port 30 protrudes rearward from the first frame portion 26. Further, the other end portion of the first frame portion 26 is bent rearward, and a second connection port 31 that is detachably connected to the air supply port 8 is provided at the rear end portion. Here, the first frame portion 26, the second frame portion 27, the third frame portion 28, and the connecting frame portion 29 have a rectangular cross-sectional shape. The first frame portion 26, the second frame portion 27, the third frame portion 28, and the connecting frame portion 29 are provided with hollow portions 32 (see FIGS. 3 and 4) that communicate with each other. The first connection port 30 and the second connection port 31 communicate with each other. The hollow portion 32 is a supply path (cleaning liquid supply path) for the cleaning liquid, the rinsing liquid, and the disinfecting hot water that is pumped from the cleaning liquid supply port 7 via the first connection port 30 and the second connection port 31. This is a supply path (air supply path) for aseptic air supplied from the air supply port 8.

  On the upper surfaces of the second frame portion 27 and the third frame portion 28, there are provided jet holes (cleaning liquid jet ports) 33 communicating with the hollow portion 32 of the second frame portion 27 and the hollow portion 32 of the third frame portion 28, respectively. Yes. Accordingly, each ejection port 33 ejects the cleaning liquid, the rinsing liquid, and the hot water for disinfection that are pumped from the cleaning liquid supply port 7 through the first connection port 30. In addition, each ejection port 33 ejects aseptic air sent from the air supply port 8 via the second connection port 31.

  Here, as shown in FIG.3 (b), the jet nozzle 33 is a through-hole penetrating from each upper surface of the 2nd frame part 27 and the 3rd frame part 28 to the hollow part 32, In the inner peripheral surface, An internal thread 34 is formed.

  As shown in FIG. 2, the central portion 23 a of the rotary nozzle 23 is rotatably connected to the lower side of the connecting frame portion 29. The rotary nozzle 23 includes a plurality of nozzles 37 on the upper portion of the outer peripheral surface. When the cleaning liquid, the rinsing liquid or the disinfecting hot water is supplied from the third cleaning liquid supply port 7, these liquids are supplied to the rotary nozzle 23 through the hollow portion 32 (cleaning liquid supply path) of the cleaning liquid supply frame 22. . Thereby, the rotating nozzle 23 rotates horizontally by the pressure of the supplied liquid while ejecting the cleaning liquid, the rinsing liquid or the hot water for disinfection from the nozzle 37.

(Handpiece holder)
Next, the handpiece holder 24 will be described with reference to FIG. As shown in FIG. 3A, the handpiece holder 24 has a connecting pipe portion 41 provided at the lower end portion detachably attached to the ejection port 33 of the third frame portion 28. A holding cylinder portion 42 for detachably holding the dental handpiece 100 is provided on the upper portion of the handpiece holder 24.

As shown in FIG. 3 (b), the handpiece holder 24 includes a silicon rubber cylinder 45 having a holding cylinder part 42, a resin case 46 having a connecting pipe part 41, and the cylinder 45 as a case 46. A resin cap 47 is provided. Inside the handpiece holder 24, a flow path 48 (cleaning liquid flow path) that connects the central hole 41 a of the connecting pipe portion 41 and the central hole 42 a of the holding cylinder portion 42 is formed. When the handpiece holder 24 is attached to the cleaning liquid supply frame 22, the cleaning liquid, the rinsing liquid, the hot water for sterilization, and the sterilized air ejected from the ejection port 33 are retained from the connecting pipe section 41 through the flow path 48. 42, the central hole 42a of the holding cylinder 42
Erupted from. A mesh filter 49 is disposed in the middle of the flow path 48.

  The cylinder 45 is made of silicon rubber. The cylindrical body 45 includes a first cylinder portion 51 having a tapered surface in which the center hole is directed to the inner peripheral side from the lower side to the upper side, and a second cylinder portion having a center hole having a constant diameter. 52, a third cylinder portion 53 having a center hole larger in diameter than the second cylinder portion 52, and a fourth cylinder portion 54 having a center hole larger in diameter than the third cylinder portion 53 are successively arranged in this order. Have.

  On the inner peripheral surface of the fourth cylindrical portion 54, two annular grooves 55 and 56 that are recessed toward the outer peripheral side are formed at positions spaced apart in the vertical direction. On the inner peripheral surface of the fourth cylindrical portion 54, the inner peripheral surface portion between the annular groove 55 and the annular groove 56 is an inner peripheral surface below the annular groove 55 positioned below the annular grooves 55, 56. The diameter is larger than the part. Further, on the inner peripheral surface of the fourth cylindrical portion 54, the inner peripheral surface portion above the annular groove 56 has a larger diameter than the inner peripheral surface portion between the annular groove 55 and the annular groove 56. Here, the inner peripheral surface of the fourth cylinder portion 54 has an inner diameter that gradually increases upward. Therefore, it is easy to insert the base portion 101 (see FIG. 3) of the handpiece 100 into the holding cylinder portion 42. Further, on the lower side of the third cylindrical portion 53, the annular groove 55, between the annular groove 55 and the annular groove 56, and on the upper side of the annular groove 56, an inner peripheral surface having a constant diameter is provided with a predetermined width dimension (high height). Size). Therefore, the handpiece 100 inserted into the holding cylinder portion 42 is difficult to come off.

  An annular step 57 having an annular end surface 57c facing upward is formed at a height position corresponding to the lower annular groove 55 on the outer peripheral surface of the cylindrical body 45. Thereby, as for the cylinder 45, the outer diameter dimension of the upper part 57a of the annular step part 57 is smaller than the outer diameter dimension of the lower part 57b of the annular end part.

  The case 46 includes a connecting pipe part 41, an annular enlarged diameter part 61 extending upward from the upper end of the connecting pipe part 41 toward the outer peripheral side, and a case side cylindrical part 62 extending upward from the outer peripheral edge of the enlarged diameter part 61. I have. Two stepped portions are formed on the inner peripheral surface portion where the enlarged diameter portion 61 and the case side cylindrical portion 62 are continuous.

  The lower step is an annular filter support 63 that detachably supports the mesh filter 49 from below. The filter support portion 63 includes an outer peripheral edge portion of the tapered surface 61a that is the upper surface of the enlarged diameter portion 61 and an annular wall 63a that extends upward from the outer peripheral end of the tapered surface 61a. The mesh filter 49 has a circular planar shape, and the outer peripheral edge portion thereof is placed on the outer peripheral edge portion of the tapered surface 61a. The upper step is an annular tube support 64 that supports the tube 45 in a detachable manner from below. The cylindrical body support portion 64 includes an annular surface 64a extending from the upper end of the annular wall 63a of the filter support portion 63 to the outer peripheral side, and an annular wall 64b extending upward from the outer peripheral end of the annular surface 64a. The cylindrical body 45 is mounted on the annular surface 64 a of the cylindrical body support portion 64 at the outer peripheral edge portion of the lower end surface thereof.

  Here, the connecting pipe part 41, the enlarged diameter part 61, the case side cylindrical part 62, the filter support part 63 and the cylindrical body support part 64 are provided coaxially, and these inner peripheral sides are the first of the cylindrical body 45. A flow path 48 is formed together with the center hole of the cylinder portion 51 and the center hole of the second cylinder portion 52. A male screw 65 that can be screwed into a female screw 34 provided on the inner peripheral surface of each ejection port 33 of the cleaning liquid supply frame 22 is provided on the outer peripheral surface of the connecting pipe portion 41. A male screw 66 is provided on the outer peripheral surface of the case side cylindrical portion 62. The handpiece holder 24 is attached to the cleaning liquid supply frame 22 in a state where the connecting pipe portion 41 is screwed into the ejection port 33 and the lower end surface of the enlarged diameter portion 61 is in contact with the upper surface of the cleaning liquid supply frame 22.

The cap 47 includes a cap-side tube portion 71 and an annular plate portion 72 that protrudes from the upper end edge of the cap-side tube portion 71 toward the inner peripheral side. A female screw 73 that can be screwed with a male screw 66 formed on the outer peripheral surface of the case side cylindrical portion 62 is formed on the lower portion of the inner peripheral surface of the cap side cylindrical portion 71.

  The mesh filter 49 is made of metal, and in this example is made of stainless steel. Further, the mesh filter 49 of this example is obtained by laminating a plurality of mesh filters having different mesh opening shapes and opening sizes, and integrating them by sintering. Here, the plurality of mesh filters are stacked such that a coarse mesh is positioned on the connecting pipe portion 41 side and a fine mesh is positioned on the holding cylinder portion 42 side. That is, a plurality of mesh filters are laminated so that the mesh becomes finer from the upstream side to the downstream side in the flow direction of the cleaning liquid, the rinsing liquid, the hot water for sterilization, and the sterile air that are ejected from the ejection port 33. Yes. As a result, relatively large foreign matter is captured by the coarse mesh filter on the upstream side, and foreign matter that has passed through the upstream mesh filter is captured by the finer mesh filter on the downstream side. Therefore, the mesh filter 49 is less likely to be clogged as compared with a case where foreign matters are removed using a single mesh filter having a fine mesh.

  When assembling the handpiece holder 24, the cylinder 45 is placed on the cylinder support 64 from above the case 46 with the mesh filter 49 placed on the filter support 63 of the case 46. Then, a cap 47 is placed from above the cylinder 45, and an upper portion 57 a than the annular step 57 of the cylinder 45 is inserted on the inner peripheral side of the annular plate portion 72, and the female screw 73 of the cap side cylinder 71 and the case side The male screw 66 of the cylinder part 62 is screwed together. As a result, the annular plate portion 72 of the cap 47 abuts on the annular end surface 57c of the annular step portion 57 of the cylindrical body 45, and the lower portion 57b of the cylindrical body 45 has a cylindrical body of the annular plate portion 72 of the cap 47 and the case 46. It is fixed to the case 46 while being sandwiched between the support part 64. Further, the mesh filter 49 is fixed to the case 46 while being sandwiched between the cylindrical body 45 and the case 46.

  Here, the dental handpiece 100 includes a head (not shown) including an air turbine for rotating a tool and a water jet, and a base 101 gripped by an operator. An air supply pipe 102 for supplying air to the air turbine and a water supply pipe 103 for supplying water to the jet outlet are formed in the base 101, and an air inlet of the air supply pipe 102 is formed at the end of the base 101. The water supply port of the water supply pipe 103 is exposed. The dental handpiece 100 is held by the handpiece holder 24 by inserting the end portion of the base 101 into the inner peripheral side of the holding cylinder portion 42. The dental handpiece 100 of this example is held by the holding cylinder portion 42 in a state where the end portion of the base 101 is inserted to the lower end of the third cylinder portion 53 as indicated by an imaginary line in FIG. ing. When a dental handpiece having a base thicker than the dental handpiece 100 is held by the handpiece holder 24, the holding cylinder is inserted with the end portion of the base inserted to the lower end of the fourth tube portion 54. Held in the part 42.

  When the dental handpiece 100 is held by the handpiece holder 24 and attached to the spout 33, the spout 33 and the air supply pipe 102 and the water supply pipe 103 of the dental handpiece 100 communicate with each other. Accordingly, the air supply pipe 102 and the water supply pipe 103 of the dental handpiece 100 communicate with the cleaning liquid supply port 7 of the cleaning apparatus 1 via the cleaning liquid supply frame 22.

(Suction tube holder)
FIG. 4A is a perspective view of the state in which the suction tube holder 25 is attached to the cleaning liquid supply frame 22 as viewed from above, and FIG. 4B is a cross-sectional view thereof. The suction tube holder 25 is made of stainless steel. As shown in FIG. 4A, the suction pipe holder 25 has a connecting pipe portion 75 provided at the lower end portion detachably attached to the jet outlet 33 of the second frame portion 27. A holding cylinder portion 78 for holding the dental suction tube 105 is provided on the upper portion of the suction tube holder 25.

  As shown in FIG. 4B, the suction tube holder 25 includes a connecting tube portion 75, a small diameter tube portion 76 having a smaller diameter than the connecting tube portion 75, a connecting tube portion 75, and a small diameter tube from the bottom to the top. A large-diameter cylindrical portion 77 having a larger diameter than the portion 76 and a holding cylindrical portion 78 having a smaller diameter than the large-diameter cylindrical portion 77 and the connecting pipe portion 75 are sequentially provided in this order. The holding cylinder part 78 is formed with a plurality of cylinder part through holes 78b communicating with the center hole 78a. A male screw 79 that can be screwed into the female screw 34 of the spout 33 is provided on the outer peripheral surface of the connecting pipe portion 75. The suction pipe holder 25 is attached to the cleaning liquid supply frame 22 in a state where the connecting pipe part 75 is screwed into the ejection port 33 and the lower end surface of the large diameter cylindrical part 77 is in contact with the upper surface of the cleaning liquid supply frame 22.

  The connecting pipe portion 75, the small diameter cylindrical portion 76, the large diameter cylindrical portion 77 and the holding cylindrical portion 78 are formed coaxially, and the central hole of the small diameter cylindrical portion 76 and the central hole of the large diameter cylindrical portion 77 are formed in the connecting pipe portion 75. A flow path (cleaning liquid flow path) 80 that communicates the central hole 75a and the central hole 78a of the holding cylinder portion 78 is formed. When the suction pipe holder 25 is attached to the cleaning liquid supply frame 22, the cleaning liquid, the rinsing liquid, the disinfecting hot water, and the sterilized air that are ejected from the ejection port 33 are retained from the connecting pipe portion 75 via the flow path 80. It reaches the portion 78 and is ejected from the center hole 78a of the holding tube portion 78 and the tube portion through hole 78b.

  The suction tube holder 25 includes a plate-like stopper 81 on the outer side in the radial direction of the holding cylinder portion 78.

  More specifically, the suction tube holder 25 includes a first holder constituting member 82 including a connecting tube portion 75, a small diameter tubular portion 76, and a large diameter tubular portion 77, a second holder constituting member 83 including a holding tubular portion 78, A stopper member 84 having a stopper 81 is provided.

  The first holder constituting member 82 includes a recess 85 in the upper end surface of the large diameter cylindrical portion 77. A female screw 86 is formed on the inner peripheral surface of the recess 85. The second holder constituting member 83 includes a cylindrical connecting portion 87 that is smaller in diameter than the holding cylinder portion 78 and can be inserted into the recess 85 below the holding cylinder portion 78. A male screw 88 that engages with the female screw 86 of the recess 85 is formed on the outer peripheral surface of the connecting portion 87.

  The stopper member 84 includes a fixed plate portion 89 extending along the upper surface of the large diameter cylindrical portion 77 and a stopper 81 extending upward from the outer peripheral edge portion of the fixed plate portion 89. A through hole 90 into which the connecting portion 87 can be inserted is provided at the center of the fixed plate portion 89. The stopper 81 has a first inclined plate portion 81a inclined upward toward the through hole 90 and a second inclined plate inclined in a direction away from the through hole 90 upward from the upper end edge of the first inclined plate portion 81a. A portion 81b is provided. The stopper 81 is covered with a fluororesin tube (covering member) 91 as indicated by a dotted line in FIG. The tube 91 covers the entire first inclined plate portion 81a and the second inclined plate portion 81b.

  When assembling the suction tube holder 25, the tube 91 is put on the stopper 81. Then, the fixing plate portion 89 of the stopper member 84 is disposed on the first holder constituting member 82. Next, the connecting portion 87 of the second holder constituting member 83 is inserted into the recess 85 of the first holder constituting member 82 through the through hole 90 of the fixed plate portion 89. Thereafter, the male screw 88 of the connecting portion 87 is screwed with the female screw 86 of the concave portion 85, and the second holder constituting member 83 is fixed to the first holder constituting member 82 with the fixing plate portion 89 of the stopper member 84 sandwiched therebetween. To do. As a result, the stopper 81 extends upward along the holding cylinder part 78 on the outer peripheral side of the holding cylinder part 78.

  Here, the dental suction tube 105 is a tube body that is used by being attached to the tip of a suction tube of a suction device for sucking saliva or the like in a patient's mouth during dental treatment. The dental suction tube 105 is held by the suction tube holder 25 when the holding cylinder portion 78 of the suction tube holder 25 is inserted into the tube.

  When the holding cylinder portion 78 is inserted into the dental suction tube 105, the stopper 81 has a dental suction via the tube 91 at the corner 81 c between the first inclined plate portion 81 a and the second inclined plate portion 81 b. It abuts on the tube 105 from the outside. As a result, the stopper 81 is elastically deformed radially outward and exerts a biasing force that biases the dental suction tube 105 toward the holding cylinder portion 78. That is, the stopper 81 presses the dental suction tube 105 against the holding cylinder portion 78, thereby preventing the dental suction tube 105 from falling off the suction tube holder 25. Here, since the stopper 81 is covered with the tube 91, the dental suction tube 105 is prevented from being damaged when the stopper 81 presses the dental suction tube 105 against the holding cylinder portion 78.

  When the dental suction tube 105 is held by the suction tube holder 25 and attached to the ejection port 33, the ejection port 33 and the dental suction tube 105 are connected via the central hole 78a of the holding cylinder portion 78 and the cylindrical portion through hole 78b. Communicate. Accordingly, the dental suction tube 105 communicates with the cleaning liquid supply port 7 of the cleaning device 1 via the cleaning liquid supply frame 22.

(Cleaning operation)
When cleaning the dental handpiece 100, the dental suction tube 105 and other medical instruments, the dental handpiece 100 is mounted on the cleaning liquid supply frame 22 via the handpiece holder 24. Further, the dental suction tube 105 is attached to the cleaning liquid supply frame 22 via the suction tube holder 25. Further, another medical instrument is placed on the mesh racks 15 and 21. Further, the first connection port 30 of the cleaning liquid supply frame 22 is connected to the cleaning liquid supply port 7, and the second connection port 31 is connected to the air supply port 8. Here, a plug (not shown) for sealing the ejection port 33 is attached to the ejection port 33 in which the dental handpiece 100 and the suction tube holder 25 are not mounted in the cleaning liquid supply frame 22. The plug is provided with a male screw that can be screwed with a female screw 34 provided at the jet nozzle 33.

  In the cleaning process, the cleaning apparatus 1 supplies the cleaning liquid from the first cleaning liquid supply port 5 and the second cleaning liquid supply port 6. As a result, the cleaning liquid is ejected from the rotating nozzles 13 of the lower cleaning liquid sprayer 10 and the upper cleaning liquid sprayer 11, and the medical instruments placed on the mesh racks 15 and 21 are cleaned. In addition, the cleaning apparatus 1 supplies the cleaning liquid from the third cleaning liquid supply port 7 to the medical instrument cleaning unit 20 through the first connection port 30. As a result, the cleaning liquid is sent to the inside of the air supply pipe 102 and the water supply pipe 103 of the dental handpiece 100 held by the handpiece holder 24 via the cleaning liquid supply frame 22 and the handpiece holder 24, and the inside of these pipes is cleaned. . Further, the cleaning liquid is fed into the dental suction pipe 105 through the cleaning liquid supply frame 22 and the suction pipe holder 25 to clean the inside of the pipe. Further, when the cleaning liquid is supplied to the medical instrument cleaning unit 20, the cleaning liquid is ejected from the rotary nozzle 23 to clean the outside of the dental handpiece 100 and the outside of the dental suction tube 105. Furthermore, the medical device placed on the mesh rack 21 of the medical device cleaning unit 20 is cleaned by the ejection of the cleaning liquid from the rotary nozzle 23.

  In the rinsing process following the cleaning process, a rinsing liquid is supplied from each of the cleaning liquid supply ports 5, 6 and 7 instead of the cleaning liquid, and the medical instrument in the cleaning chamber 2 is rinsed by the same operation as the cleaning process. In the disinfection process following the rinse process, disinfecting hot water is supplied from the cleaning liquid supply ports 5, 6, and 7 instead of the rinse liquid, and the medical instrument in the cleaning chamber 2 is operated in the same manner as the cleaning process and the rinse process. Disinfect.

In the drying process, the cleaning apparatus 1 circulates heated aseptic air into the cleaning chamber 2 through the air outlet. As a result, the outside of the medical instrument, the dental handpiece 100 and the dental suction tube 105 placed on the mesh racks 15 and 21 are dried. The cleaning device 1 supplies heated sterile air from the air supply port 8 to the medical instrument cleaning unit 20 through the second connection port 31. As a result, aseptic air is sent to the inside of the air supply pipe 102 and the water supply pipe 103 of the dental handpiece 100 through the cleaning liquid supply frame 22 and the handpiece holder 24, and the inside of these pipes is dried. Furthermore, since aseptic air is sent into the dental suction tube 105 through the cleaning liquid supply frame 22 and the suction tube holder 25, the inside of the tube is dried. Moisture adhering to the dental handpiece 100 and the dental suction tube 105 becomes water vapor and is discharged from the exhaust port 9 to the outside.

(Function and effect)
In this example, the handpiece holder 24 includes a mesh filter 49 in the middle of a flow path 48 formed therein. Therefore, foreign substances can be removed from the cleaning liquid, the rinsing liquid, hot water for sterilization, and aseptic air ejected from the ejection port 33 toward the water supply pipe 103 and the air supply pipe 102 of the dental handpiece 100. Therefore, foreign matter can be prevented from entering the dental handpiece 100. Here, it is conceivable that the mesh filter 49 is made of ceramics. In this case, ceramic powder is generated from the mesh filter 49, and this powder becomes a foreign substance and enters the dental handpiece 100. There is. On the other hand, in this example, since the mesh filter 49 is made of metal, generation of powder from the mesh filter 49 can be prevented. Therefore, it is possible to prevent the handpiece holder 24 from being damaged by the foreign matter.

  In the handpiece holder 24, the mesh filter 49 can be replaced by removing the cap 47 from the case 46 and removing the cylinder 45 from the case 46. Furthermore, since the mesh filter 49 is made of metal, it can be reused by removing foreign matter adhered thereto by ultrasonic cleaning or the like.

  Next, in this example, the suction tube holder 25 includes a stopper 81. Here, in the case where the dental suction tube 105 is bent in a “<” shape, the instrument holder inserts the holding cylinder portion 78 into a tube portion extending linearly in the dental suction tube 105. Thus, the dental suction tube 105 is held. For this reason, the cleaning liquid, the rinsing liquid and the hot water for sterilization supplied from the jet nozzle 33 hit the inner peripheral surface of the bent portion of the dental suction pipe 105, and the dental suction pipe 105 of the holding cylinder portion 78 is driven by these momentums. There is a possibility of moving to the tip side and coming off. With respect to such a problem, the suction tube holder 25 includes the stopper 81 that urges the dental suction tube 105 toward the holding cylinder portion 78, so that the dental suction tube 105 can be prevented from coming off. Therefore, it is possible to prevent the dental suction tube 105 from falling from the suction tube holder 25 and being damaged. Further, since the stopper 81 is covered with the fluororesin tube 91, the dental suction tube 105 is not damaged when the stopper 81 presses the dental suction tube 105 against the holding cylinder portion 78.

(Modification of handpiece holder)
FIG. 5 is a cross-sectional view of a modified handpiece holder. In the handpiece holder 24A of this example, only the shapes of the handpiece holder 24 and the cylindrical body 45A are different. Therefore, the same parts are denoted by the same reference numerals as those of the handpiece holder 24, and the description thereof is omitted.

The cylinder 45A of the handpiece holder 24A of this example is made of silicon rubber. 45 A of cylinders are the 1st cylinder part 51A in which the center hole becomes a taper surface which goes to the inner peripheral side toward upper direction toward the upper part from the lower part, and the 2nd cylinder part provided with the center hole of a fixed diametrical dimension. 52A and a third cylinder portion 53A having a center hole having a diameter larger than that of the second cylinder portion 52A are continuously provided in this order. The inner peripheral surface of the third cylindrical portion 53A is a tapered surface that inclines upward toward the inner peripheral side. The third cylinder portion 53 </ b> A constitutes the holding cylinder part 42. The handpiece holder 24A of this example is used when cleaning a contra-angle dental handpiece. The handpiece holder 24A is also provided with a mesh filter 49 in the middle of the flow path 48 formed therein. Accordingly, foreign substances can be removed from the cleaning liquid, the rinsing liquid, the hot water for sterilization, and the sterile air that are ejected toward the dental handpiece 100. Therefore, the handpiece holder 24 can be prevented from being damaged by the foreign matter.

(Variation 1 of suction tube holder)
6A is a perspective view of the state in which the suction tube holder of the first modification is attached to the cleaning liquid supply frame 22 as viewed from above, and FIG. 6B is a cross-sectional view thereof, and FIG. c) is a perspective view of a base member. In addition, since the suction tube holder 25A of this example has a configuration corresponding to the suction tube holder 25 described above, the corresponding portions are denoted by the same reference numerals, and description thereof is omitted. The suction tube holder 25 </ b> A of this example is located at a position adjacent to the lower side of the holding cylinder portion 78 (position adjacent to the rear of the holding cylinder portion 78 in the insertion direction I in which the holding cylinder portion 78 is inserted into the dental suction tube 105). A pedestal member (contact portion) 93 on which the dental suction tube 105 is placed is provided. The pedestal member 93 extends linearly from the lower end of the holding cylinder part 78 in a direction orthogonal to the holding cylinder part 78. The width of the pedestal member 93 is narrower than the inner diameter dimension of the dental suction tube 105 held by the holding cylinder part 78 as shown in FIG.

  Here, since the width of the pedestal member 93 is narrower than the inner diameter dimension of the dental suction tube 105, the pedestal member 93 is formed on a part of the opening edge 105 a of the dental suction tube 105 into which the holding cylinder portion 78 is inserted from below. Abut. Therefore, when the dental suction tube 105 is held in the holding cylinder portion 78, the lower end opening 105b (opening in the insertion direction I) of the dental suction tube 105 is sealed by the base member 93 and other members. There is no end.

  According to the suction tube holder 25 </ b> A of this example, when water droplets remain inside the dental suction tube 105, the water droplets are blocked by the base member 93 at the lower end opening 105 b of the dental suction tube 105. It is discharged to the outside of the dental suction tube 105 through an opening portion that is not present. Therefore, the inside of the dental suction tube 105 in the drying process can be reliably dried.

  The pedestal member 93 is a rectangular parallelepiped member having a center hole 94 penetrating in the vertical direction, as shown in FIG. When assembling the suction tube holder 25A, the connecting portion 87 of the second holder constituting member 83 is inserted into the center hole 94 of the base member 93 and the through hole 90 of the fixing plate portion 89, so that the first holder constituting member 82 Insert into the recess 85. Thereafter, the male screw 88 of the connecting portion 87 is screwed into the female screw 86 of the concave portion 85, and the second holder constituting member 83 and the first holder constituting member 82 are fixed.

(Variation 2 of suction tube holder)
FIG. 7A is a perspective view of the state in which the suction pipe holder of Modification 2 is attached to the cleaning liquid supply frame 22 as viewed from above, and FIG. 7B is a cross-sectional view thereof. In addition, since the suction tube holder 25B of the present example has a configuration corresponding to the suction tube holder 25 described above, the corresponding portions are denoted by the same reference numerals and description thereof is omitted. The suction tube holder 25 </ b> B of this example includes a cutout portion 95 cut out from the outer peripheral side in a part of the fixing plate portion 89 of the stopper member 84 in the circumferential direction. The inner peripheral side of the cutout portion 95 reaches the outer peripheral surface of the holding cylinder portion 78 when viewed from above. Further, a groove portion 96 extending in the radial direction is provided on the upper surface of the large-diameter cylindrical portion 77 on which the fixed plate portion 89 is placed. The groove portion 96 extends outward from a position overlapping the notch portion 95 when viewed from above, and opens outward at the outer peripheral edge of the large-diameter cylindrical portion 77.

Here, the fixed plate portion 89 is provided with a notch portion 95. Therefore, the fixed plate portion 89 is a contact portion that comes into contact with a part of the opening edge 105a of the dental suction tube 105 in which the holding cylinder portion 78 is inserted from below. Therefore, when the dental suction tube 105 is held in the holding cylinder portion 78, the lower end opening 105b (opening in the insertion direction I) of the dental suction tube 105 is blocked by the fixing plate portion 89 and other members. It will never be done.

  According to the suction tube holder 25B of this example, when water droplets remain inside the dental suction tube 105, the water droplets are sealed by the base member 93 at the lower end opening 105b of the dental suction tube 105. It is discharged to the outside of the dental suction tube 105 through the notched portion 95 and the groove portion 96 of the large diameter cylindrical portion 77. Therefore, the inside of the dental suction tube 105 in the drying process can be reliably dried.

(Variation 3 of suction tube holder)
FIG. 8A is a perspective view of the state in which the suction tube holder of Modification 3 is attached to the cleaning liquid supply frame 22 as viewed from above, and FIG. 8B is a cross-sectional view thereof. In addition, since the suction tube holder 25C of the present example has a configuration corresponding to the suction tube holder 25 described above, the corresponding portions are denoted by the same reference numerals and description thereof is omitted. In the suction tube holder 25C of this example, the holding cylinder portion 78 has a radial direction (a direction intersecting the insertion direction I) at the lower end thereof (the rear end of the insertion direction I in which the holding cylinder portion 78 is inserted into the dental suction tube 105). And a drain hole 97 communicating with the center hole 78a.

  According to the suction tube holder 25C of this example, when water droplets remain inside the dental suction tube 105, the water droplets flow from the drain hole 97 through the central hole 78a of the holding cylinder portion 78. It is discharged from the path 80 to the connecting pipe part 75 side. Therefore, the inside of the dental suction tube 105 in the drying process can be reliably dried.

DESCRIPTION OF SYMBOLS 1 ... Cleaning apparatus 2 ... Cleaning chamber 7 ... 3rd cleaning liquid supply port (cleaning liquid supply port)
20 ... Medical instrument cleaning unit 22 ... Cleaning liquid supply frame 24 ... Handpiece holder (tool holder)
25 ・ 25A ・ 25B ・ 25C ・ ・ ・ Suction tube holder (second instrument holder)
30 ... 1st connection port (connection port)
32 ... Hollow part (cleaning liquid supply path)
33 ... spout (cleaning liquid spout)
41, 75 ... connecting pipe parts 42, 78 ... holding cylinder parts 45, 45A ... cylindrical body 46 ... case 47 ... cap 48 ... flow path (cleaning liquid flow path)
49 ... Mesh filter 63 ... Filter support part 64 ... Cylinder support part 81 ... Stopper 93 ... Pedestal member (contact part)
97 ... Drain hole

Claims (8)

A connection port connected to a cleaning liquid supply port provided in a cleaning chamber of the cleaning device, a cleaning liquid supply path connected to the cleaning liquid supply port via the connection port, and the cleaning liquid supply port communicating with the cleaning liquid supply path A cleaning liquid supply frame having a cleaning liquid ejection port for ejecting the cleaning liquid pumped from
A connecting pipe part that is detachably connected to the cleaning liquid spout, a holding cylinder part that detachably holds a device to be cleaned, and a cleaning liquid channel that communicates the central hole of the connecting pipe part and the holding cylinder part. An instrument holder,
The instrument holder is a handpiece holder that holds a base portion opposite to a head of a dental handpiece on the inner peripheral side of the holding cylinder portion,
The medical device cleaning unit, wherein the handpiece holder includes a metal mesh filter in the middle of the cleaning liquid flow path. In claim 1,
The handpiece holder is
A cylinder including the holding cylinder;
The connecting pipe part, an annular cylindrical support part that removably supports the cylindrical body in a state where the connecting pipe part and the holding cylinder part are in communication, and between the connecting pipe part and the cylindrical support part A case provided with an annular filter support portion for detachably supporting the mesh filter;
A cap that is detachably attached to the case and fixes the cylinder to the cylinder support;
A medical instrument cleaning unit comprising: In claim 1,
As the instrument holder, it has a second instrument holder,
The second instrument holder is a suction tube holder that holds the dental suction tube by inserting the holding cylinder portion into the hollow portion of the dental suction tube,
The suction tube holder is provided with a stopper on the outside in the radial direction of the holding cylinder part,
The stopper is in contact with the dental suction tube and elastically deforms outward in the radial direction when the holding tube portion is inserted into the dental suction tube, and the dental suction tube is attached to the holding tube portion. A medical instrument cleaning unit characterized by exerting a biasing force biasing toward the side. In claim 3,
The suction tube holder includes a resin-made covering member capable of covering an outer peripheral surface portion of the stopper facing the holding cylinder portion. In claim 3 or 4,
The suction tube holder includes a contact portion that can contact a part of the edge of the rear end opening of the dental suction tube from the rear in the insertion direction in which the holding cylinder portion is inserted into the dental suction tube. Medical equipment cleaning unit. In claim 3 or 4,
The holding tube portion of the suction tube holder has a drain hole that penetrates in a direction intersecting the insertion direction at the rear end of the insertion direction in which the holding tube portion is inserted into the dental suction tube and communicates with the central hole. A medical instrument cleaning unit comprising:   The handpiece holder according to claim 1 or 2.   The suction tube holder according to any one of claims 3 to 6.

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