JP2013070901A - Medical drainage device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical drainage device which enables accurate recognition of a drainage amount.SOLUTION: The medical drainage device 1 includes: a connection tube 11; a suction device 12 which is connected to the connection tube 11 and includes a pump 121 that is a hollow elastic body; a storage bag 13 which is connected to the pump 121 of the suction device 12 and stores drainage sucked through the connection tube 11 and the pump 121; and a check valve 17 which makes a gas and the drainage flowing from the pump 121 to the storage bag 13 pass through and prevents the flow of the gas and the drainage from the storage bag 13 to the pump 121. To the connection tube 11, a gas supply means 15 for supplying the gas into the connection tube 11 is connected.

Description

  The present invention relates to a medical drainage device.

  Conventionally, a medical drainage device for aspirating and storing drainage from a human wound or the like has been used. For example, a medical drainage device disclosed in Patent Document 1 is shown in FIG. This Patent Document 1 discloses a medical drainage tool 90 including a suction device 91 and a collection bag 92 connected to the suction device 91. A tube 93 is connected to the suction device 91.

In this medical drainage tool 90, when the aspirator 91 is squeezed and then the squeezing is released, a restoring force that the aspirator 91 tries to return is generated. Negative pressure is generated by this restoring force, and the drainage is sucked from the wound cavity or the like. The sucked drained liquid is stored in the collection bag 92 via the suction device 91. Specifically, the drainage liquid inside the suction device 91 falls into the collection bag 92 due to its own weight.
A valve member is provided at the drainage inlet of the collection bag 92.

JP-A-5-115556

It has been found that the medical drainage device 90 disclosed in Patent Document 1 has room for further improvement. This will be described below.
As described above, when the aspirator 91 is squeezed and the squeezing is released, the inside of the aspirator 91 and the tube 93 becomes negative pressure. Since the valve member is provided at the drainage inlet of the collection bag 92, the pressure inside the collection bag 92 is maintained even when the suction device 91 is squeezed with the collection bag 92 attached to the suction device 91. There is no change. Therefore, the suction device 91 has a negative pressure inside, while the collection bag 92 has a positive pressure compared to the suction device 91. In addition, Patent Document 1 discloses a method of using the suction bag 91 after squeezing and releasing the compression, and then attaching the collection bag 92 to the suction unit 91. While the inside of the vessel 91 has a negative pressure, the collection bag 92 side has a positive pressure compared to the inside of the suction device 91.
Therefore, it becomes difficult for the drainage liquid inside the suction device 91 to fall into the collection bag 92.

In addition, when the drainage liquid is discharged from the inside of the suction device 91 to the collection bag 92, the atmospheric pressure inside the suction device 91 is reduced by the volume of the drainage. On the other hand, since the drainage liquid accumulates inside the collection bag 92, the atmospheric pressure inside the collection bag 92 increases. This also makes it difficult for the drained liquid to fall from the suction device 91 side to the collection bag 92 side.
As described above, since it is difficult to drain the drainage liquid inside the suction device 91 to the collection bag 92, the drainage actually drained from the human body or the like even if the drainage amount stored in the collection bag 92 is measured. It is difficult to accurately grasp the amount.

  According to the present invention, there is provided a medical drainage device that sucks and stores drainage, and includes a connection tube connected to a catheter and a hollow elastic body connected to the connection tube. A suction device, a storage bag connected to the hollow elastic body of the suction device and storing the drained liquid sucked through the connection tube and the hollow elastic body, and the hollow elastic body of the suction device And a check valve for preventing the flow of gas and drainage from the storage bag to the hollow elastic body of the suction device. Provides a medical drainage tool to which a gas supply means for supplying gas into the connecting tube is connected.

In this medical drainage device, when the hollow elastic body of the aspirator is squeezed and then squeezed, the inside of the connection tube and the inside of the hollow elastic body become negative pressure. As a result, the drainage is sucked into the connection tube and the hollow elastic body. The drained liquid sucked into the elastic body is stored in the storage bag via a check valve. This check valve allows the gas and drainage flowing from the hollow elastic body to the storage bag, and prevents the flow of gas and drainage from the storage bag to the hollow elastic body. By squeezing the elastic body, the gas in the storage bag is not sucked to the aspirator side, and the air pressure in the storage bag does not decrease.
Here, in the present invention, the gas supply means is connected to the connection tube. Since the connecting tube is connected to the hollow elastic body of the aspirator, when the gas is supplied into the connecting tube by the gas supply means, the gas flows to the hollow elastic body of the aspirator. . By supplying gas inside the elastic body, the pressure inside the elastic body increases, and the pressure inside the storage bag is made closer to the pressure inside the elastic body, or the pressure inside the elastic body is changed to the pressure inside the storage bag. Than can be raised.
Thereby, the drainage liquid inside the elastic body is easily discharged to the storage bag side, and the drainage liquid is suppressed from remaining inside the elastic body. Therefore, the amount of drainage can be accurately measured, and a convenient medical drainage device can be provided.

  ADVANTAGE OF THE INVENTION According to this invention, the medical drainage tool which can grasp | ascertain the amount of drainage correctly is provided.

It is a schematic diagram which shows the medical drainage tool concerning 1st embodiment of this invention. It is a schematic diagram which shows the medical drainage tool concerning 1st embodiment of this invention. It is a schematic diagram which shows the medical drainage tool concerning 1st embodiment of this invention. It is a schematic diagram which shows the conventional medical drainage tool.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are denoted by the same reference numerals, and detailed description thereof is appropriately omitted so as not to overlap.
In the following embodiments, the drainage flows to the storage bag 13 via the catheter 3, the connecting tube 11, the check valve 124, the pump 121, and the check valve 17. The bag 13 side is referred to as the downstream side.
(First embodiment)
First, with reference to FIG. 1, the outline | summary of the medical drainage device 1 of this embodiment is demonstrated.
The medical drainage device 1 according to the present embodiment sucks and stores drainage fluid such as exudate from a wound cavity of a human body. The medical drainage device 1 includes a connection tube 11 connected to the catheter 3, a suction device 12 connected to the connection tube 11 and including a pump 121 that is a hollow elastic body, and a pump 121 of the suction device 12. And the storage bag 13 for storing the drained liquid sucked through the connection tube 11 and the pump 121, the gas flowing from the pump 121 to the storage bag 13 and the drainage liquid, and the pump from the storage bag 13 to the pump And a check valve 17 for preventing the flow of gas and drainage to 121. Connected to the connecting tube 11 is a gas supply means 15 for supplying gas into the connecting tube 11.

Next, the medical drainage device 1 will be described in detail.
The connecting tube 11 is connected to the catheter 3 at one end 111 and the aspirator 12 is connected to the other end 112. The aspirator 12 includes a pump 121 made of a hollow elastic body, A cylindrical first connection part 122 communicating with the inside of the pump 121, a cylindrical second connection part 123, and a check valve 124 are provided.
The pump 121 is, for example, a hollow spherical elastic body. More specifically, for example, the pump 121 is formed in a spherical shape having an outer diameter of 50 mm, an inner diameter of 46 mm, and a thickness of 2 mm, and is made of silicone rubber.
The pump 121 is elastically deformed. When a user or the like squeezes the pump 121 and releases the squeezing, the pump 121 tries to return to its original shape by its elastic force. The pump 121 corresponds to a squeezing drive unit that is driven by squeezing.
A cylindrical first connection portion 122 is provided on the top of the pump 121. Both ends of the first connection part 122 are open, and one opening communicates with the pump 121. The other end 112 of the connecting tube 11 is inserted into the other opening.
The check valve 124 is connected to the other end portion 112 of the connection tube 11 and is located inside the first connection portion 122. The check valve 124 is called a duckbill type, and includes a hollow cylindrical main body 124A and an inverted conical (mortar-shaped) valve body 124B provided at the tip of the main body 124A. A slit is formed at the tip of the valve body 124 </ b> B, and when this slit is opened, drainage or gas flows from the connection tube 11 to the pump 121. On the other hand, when drainage or gas moves from the pump 121 side toward the connection tube 11, pressure is applied to the outer periphery of the valve body 124B and the slit is closed. The drainage or gas is prevented from moving toward the tube 11.

  The second connection part 123 is connected to the lower part of the pump 121. The second connection portion 123 has a cylindrical shape and both end faces are open, and one opening portion communicates with the pump 121. A drainage pipe 16 is connected to the other opening, and the storage bag 13 is connected to the aspirator 12 via the drainage pipe 16.

One end of the drainage pipe 16 is inserted into the storage bag 13. A check valve 17 is provided at the tip of the drainage pipe 16 on the storage bag 13 side.
The check valve 17 is formed by bonding two sheets together in a cylindrical shape. A drainage pipe 16 is inserted into one end of the cylindrical check valve 17, and one end of the cylindrical check valve 17 covers the periphery of the drainage pipe 16. The other end of the check valve 17 opens when drainage or gas flows from the pump 121 toward the storage bag 13, and allows the drainage or gas to pass from the pump 121 to the storage bag 13.
On the other hand, when drainage or gas moves from the storage bag 13 side toward the pump 121 side, pressure is applied to the outer periphery of the check valve 17, and the opening at the other end of the check valve 17 is open. Since it is closed, the drainage or gas is prevented from moving from the storage bag 13 side toward the pump 121 side.

  The storage bag 13 stores the drained liquid sucked through the connection tube 11 and the pump 121. The storage bag 13 is, for example, a rectangular bag having a capacity of 500 to 1000 ml, and a vent 131 is formed on the upper end side thereof. A hydrophobic ventilation filter 132 is attached to the ventilation hole 131. Although not shown, a scale for measuring the volume of the stored drainage is described on the outer surface of the storage bag 13.

  Reference numeral 18 denotes a support member that supports the suction device 12 from below and supports the upper end of the storage bag 13. Reference numeral 10 denotes a suspension member that suspends the storage bag 13.

The medical drainage device 1 as described above has a gas supply means 15 and a switching means 19.
The gas supply means 15 is connected to the connection tube 11 and supplies gas into the connection tube 11. Specifically, in this embodiment, the gas supply means 15 includes a tube 151, a sterilization filter 152 provided in the tube 151, and a gas supply source (in the present embodiment, the atmosphere).
One end of the tube 151 is connected to the connection tube 11. The other end of the tube 151 faces the atmosphere and is connected to the atmosphere as a gas supply source.
Here, one end of the tube 151 may be connected to the upstream side of the check valve 124, that is, connected to the connection tube 11. It is preferable to be connected to a region between the center portion in the longitudinal direction and the end portion 112 connected to the suction device 12. Among them, one end of the tube 151 is located in a region within a quarter of the length of the connection tube 11 from the tip of the end 112 connected to the aspirator 12 in the connection tube 11. It is preferable to be connected.
By doing in this way, the gas from the tube 151 can be easily supplied into the pump 121 through the connection tube 11.
In addition, as shown in FIG. 3, you may connect the tube 151 and the connection tube 11 so that the tube 151 and the connection tube 11 may become Y shape. In other words, the tube 151 may be connected to the connection tube 11 so as to extend upward from the connection tube 11. By doing so, it is possible to prevent clogging of drainage or tissue existing in the connection tube 11 from flowing into the tube 151.

The sterilization filter 152 includes a housing made of a resin and a filter main body disposed inside the housing. The tube 151 passes through the housing, and the inside of the tube 151 communicates with the inside of the housing. The gas (air in the present embodiment) introduced from the other end of the tube 151 passes through the filter main body of the sterilization filter 152 and is introduced into the connection tube 11.
The filter body is composed of a membrane filter, and general screen type, depth type, anisotropic type and the like can also be used.

  The switching unit 19 switches between supply and stop of gas from the gas supply unit 15 to the connection tube 11. In the present embodiment, the switching means 19 is a clip (open / close valve) 19 provided on the tube 151. The clip 19 is disposed between the sterilization filter 152 and an end portion of the tube 151 connected to the connection tube 11. By providing the clip 19 at this position, even if drainage may flow into the tube 151 from the connection tube 11, the clip 19 closes the flow path inside the tube 151, thereby eliminating the bacteria. It can prevent that the filter 152 and drainage contact.

Next, the usage method and the effect of the medical drainage device 1 as described above will be described.
First, the catheter 3 is connected to the end 111 of the connection tube 11. Then, the catheter 3 is placed in a human body wound or the like. Further, the gas flow path in the tube 151 is closed in advance by the clip 19.

  Next, the user squeezes the pump 121. After that, when the squeezing is released, the pump 121 that is an elastic body tries to restore the original shape, but due to this restoring force, the gas in the connecting tube 11 is sucked to the pump 121 side and negative pressure is generated. . That is, the inside of the connection tube 11 and the inside of the pump 121 are negative pressure. And the suction force which attracts | sucks a drainage liquid generate | occur | produces with this negative pressure. The drainage passes through the connection tube 11, passes through the check valve 124, and flows into the pump 121. The drainage that has flowed into the pump 121 naturally falls into the storage bag 13 via the drainage pipe 16 and the check valve 17.

  Here, when the user operates the clip 19 to open the gas flow path in the tube 151, the atmosphere flows into the tube 151. More specifically, as described above, since the connection tube 11 has a negative pressure, the pressure inside the connection tube 11 is lower than the atmospheric pressure. That is, the end of the tube 151 is connected to a gas supply source (atmosphere in this embodiment) having a higher pressure than the pressure inside the connecting tube 11 (at least the maximum negative pressure generated inside the connecting tube 11). It can be said that. Therefore, when the gas flow path in the tube 151 is opened, gas (atmosphere) flows from the high pressure side toward the low pressure side. The air passes through the sterilization filter 152 and flows into the connection tube 11.

  The pressure inside the pump 121 is also negative, and the atmospheric pressure is lower than that of the gas supply source. The atmosphere that has flowed into the connection tube 11 flows into the pump 121 of the aspirator 12 through the check valve 124. Thereby, the atmospheric pressure inside the pump 121 is increased, and the difference between the atmospheric pressure inside the storage bag 13 and the atmospheric pressure inside the pump 121 can be reduced. In particular, in the present embodiment, the pressure inside the pump 121 is almost equal to the atmospheric pressure, and the difference between the pressure inside the storage bag 13 and the pressure inside the pump 121 can be eliminated. Thereby, it can accelerate | stimulate that drainage flows into the storage bag 13 from the pump 121 side, and can grasp | ascertain the amount of drainage correctly.

  As described above, when the user operates the clip 19 to open the gas flow path in the tube 151, the gas flows into the connection tube 11 through the sterilization filter 152 and the tube 151. It will be. Thereby, since the atmospheric pressure in the connecting tube 11 is increased, when the catheter 3 is adsorbed to a human tissue, this adsorption can be released. Therefore, when removing the catheter from the human body, the catheter can be easily removed by opening the gas flow path in the tube 151 and increasing the air pressure in the connection tube 11.

  Furthermore, in the medical drainage device 1 of the present embodiment, a milking action can be performed. The milking action is an operation for eliminating clogging of drainage or tissue when the drainage or tissue is clogged inside the connecting tube 11.

Specifically, this is performed as follows. Here, it is assumed that clogging of drainage or tissue exists in a portion upstream of the portion of the connecting tube 11 to which the tube 151 is connected.
The gas flow path in the tube 151 is closed in advance by the clip 19 (step S1). Next, the pump 121 is squeezed and the squeezing is released, thereby sucking clogs such as drainage or tissue in the connection tube 11 (step S2). Here, since the drainage, tissue, and the like are clogged in the connection tube 11, out of the gas in the connection tube 11, the gas downstream from the clogging of the drainage, tissue, etc. is sucked mainly to the pump 121 side. The Rukoto. Along with this, clogging of drainage or tissue advances to the pump 121 side. Although clogging of drainage or tissue advances, the viscosity is high and friction occurs with the connecting tube 11, so that it stops when it advances to a certain extent.

Next, the closing of the gas flow path of the tube 151 by the clip 19 is released, and the gas is sent into the pump 121 through the tube 151 and the connecting tube 11 (step S3). At this time, since the gas is introduced from the tube 151 into the connection tube 11, the gas not only flows from the connection point of the connection tube 11 and the tube 151 toward the pump 121, but also the connection tube 11 and the tube. From the connection point 151, there is a possibility of trying to flow toward clogging of drainage or tissue. If gas flows from the connection point of the connecting tube 11 and the tube 151 toward clogging of drainage or tissue, the clogging may be retreated to the upstream side (catheter 3 side) of the connecting tube 11. is there.
Therefore, the flow velocity (ml / s) of the gas flowing from the tube 151 toward the connection tube 11 is made slower than the flow velocity (ml / s) of the gas flowing in the connection tube 11 toward the pump 121 side. It is preferable. If the flow velocity of the gas flowing in the connection tube 11 toward the pump 121 is faster than the flow velocity of the gas introduced from the tube 151 to the connection tube 11, the gas introduced from the tube 151 to the connection tube is exhausted. It is possible to prevent the gas from flowing toward clogging of liquid or tissue. This prevents clogging of drainage or tissue from retreating in the connecting tube 11.
In the present embodiment, in the process of sending gas into the pump 121, clogging of drainage or tissue does not move within the connecting tube 11 but is stopped.

For example, the closing of the flow path in the tube 151 by the clip 19 is gradually eliminated, and the flow velocity (ml / s) of the gas flowing from the tube 151 toward the connection tube 11 is changed to the pump 121 side in the connection tube 11. It can be made slower than the flow rate (ml / s) of the gas flowing toward the.
Further, for example, by making the diameter of the flow path of the tube 151 smaller than the diameter of the flow path of the connection tube 11, the flow velocity (ml / s) of the gas flowing from the tube 151 toward the connection tube 11 is You may make it slower than the flow velocity (ml / s) of the gas which flows through the inside of the connection tube 11 toward the pump 121 side.
In the present embodiment, in the process of sending gas into the pump 121, clogging of drainage or tissue does not move within the connecting tube 11 but stops.

Thereafter, the gas flow path in the tube 151 is closed again by the clip 19 (step S4). Next, a step similar to step S2 is performed. That is, the pump 121 is squeezed and then the squeezing is released. As a result, the drainage or tissue in the connection tube 11 is sucked and advanced toward the pump 121 side. By repeating the above steps, the drainage or tissue in the connecting tube 11 is moved to the pump 121 side. After clogging of drainage or tissue has moved downstream from the connection point between the connecting tube 11 and the tube 151, the gas from the tube 151 is less likely to enter the pump 121. Even if the squeezing and the releasing of the squeezing are performed, it is conceivable that the forward movement amount of clogging of drainage or tissue is reduced. However, in this embodiment, since the distance from the connection point of the connection tube 11 and the tube 151 to the pump 121 is short, there is no problem even if the amount of progress of clogging of drainage or tissue is reduced. In addition, clogging of drainage or tissue that has moved downstream from the connection point between the connecting tube 11 and the tube 151 may spontaneously fall to the pump 121 side by its own weight.
Considering this point, it is preferable that the connection point between the tube 151 and the connection tube 11 be in a region between the central portion in the longitudinal direction of the connection tube 11 and the end connected to the suction device 12. . In particular, the connection point is more preferably in a region within a quarter of the length of the connection tube 11 from the end connected to the aspirator 12.

In addition, in the conventional medical drainage device as disclosed in Patent Document 1, the milking action is performed as follows.
The suction device 91 is squeezed, and the clogging of drainage or tissue is advanced by the suction force generated by releasing the squeezing. Thereafter, clogging of drainage or tissue stops after a certain amount of advance. At this stage, the suction device 91 has not returned to its original shape and is in a state of being crushed to some extent. The squeezed suction device 91 is squeezed again and the squeezing is released. Thereby, although the suction force is generated, since the squeezed suction device 91 is squeezed again, the suction force generated by the second squeezing and release of the squeezing is relatively small. Therefore, it is difficult to sufficiently advance the clogging of drainage or tissue. Therefore, it takes time for the milking action.
In contrast, the medical drainage device 1 of the present embodiment includes a tube 151 provided with a clip 19. Therefore, gas can be introduced into the pump 121 through the tube 151 by releasing the closure of the tube 151 by the clip 19. Thereby, the shape of the pump 121 can be returned to the original shape before pressing. Therefore, even when the pump 121 is squeezed for the second time and the squeezing is released, the same suction force as that for the first time can be generated. Therefore, clogging of drainage or tissue can be sufficiently advanced, and clogging can be quickly eliminated.

  Moreover, in this embodiment, although the pump 121 is squeezed and the squeezing is released, the inside of the connecting tube 11 becomes a negative pressure, but the tube 151 is connected to a gas supply source (atmosphere) having a higher atmospheric pressure than the negative pressure. Therefore, by opening the gas flow path in the tube 151, the gas (atmosphere) naturally flows in the tube 151 from the high pressure side toward the low pressure side. Therefore, since the power for forcibly introducing the gas into the tube 151 is not necessary, the configuration of the medical drainage device 1 can be simplified.

(Second embodiment)
A second embodiment of the present invention will be described with reference to FIG.
In the first embodiment, the tube 151 is connected to the atmosphere. In contrast, in the medical drainage device 2 of the present embodiment, the end of the tube 151 is connected to the storage bag 13. In this embodiment, no sterilization filter is provided. The other points are the same as the configuration of the medical drainage device 1 of the above embodiment.

Next, this embodiment will be described in detail.
In the present embodiment, the end of the tube 151 is connected to the storage bag 13. The tube 151 communicates with the storage bag 13, and the gas in the storage bag 13 flows into the tube 151. Gas (air) is present inside the storage bag 13, and the storage bag 13 serves as a gas supply source. That is, in this embodiment, the gas supply means 25 is comprised by the tube 151 and the storage bag 13 which is a gas supply source. By squeezing the pump 121 and releasing the squeezing, the inside of the connecting tube 11 becomes a negative pressure, but the atmospheric pressure inside the storage bag 13 is higher than the negative pressure. At least the atmospheric pressure inside the storage bag 13 is higher than the maximum value of the negative pressure generated inside the connecting tube 11. In the present embodiment, since the storage bag 13 is provided with the vent 131, the pressure inside the storage bag 13 is equal to the atmospheric pressure.

In such a medical drainage device 2 in this embodiment, it can be used by the same usage method as the said embodiment, and there can exist an effect similar to the said embodiment.
More specifically, as in the above-described embodiment, first, the catheter 3 is connected to the end 111 of the connection tube 11 and the catheter 3 is placed in a human body wound or the like. Further, the gas flow path in the tube 151 is closed in advance by the clip 19.

  Next, after the user squeezes the pump 121, the squeezing is released. As a result, the gas in the connecting tube 11 is sucked toward the pump 121 and negative pressure is generated. The drainage passes through the connection tube 11, passes through the check valve 124, and flows into the pump 121. The drainage that has flowed into the pump 121 naturally falls into the storage bag 13 via the drainage pipe 16 and the check valve 17.

  Here, when the user operates the clip 19 to open the gas flow path in the tube 151, the gas inside the storage bag 13 (air in the present embodiment) flows into the tube 151. . Since the connection tube 11 has a negative pressure, the pressure inside the connection tube 11 is lower than the pressure inside the storage bag 13. That is, it can be said that the end of the tube 151 is connected to a gas supply source (atmosphere in the present embodiment) having a pressure higher than the pressure inside the connection tube 11. Therefore, when the gas flow path in the tube 151 is opened, gas (atmosphere) flows from the high pressure side toward the low pressure side.

  The pressure inside the pump 121 is also negative, and the atmospheric pressure is lower than that of the gas supply source. The atmosphere that has flowed into the connection tube 11 flows into the pump 121 of the aspirator 12 through the check valve 124. Thereby, the atmospheric pressure inside the pump 121 is increased, and the difference between the atmospheric pressure inside the storage bag 13 and the atmospheric pressure inside the pump 121 can be reduced. In particular, in the present embodiment, the pressure inside the pump 121 is almost equal to the atmospheric pressure, and the difference between the pressure inside the storage bag 13 and the pressure inside the pump 121 can be eliminated. Thereby, the drainage can be smoothly discharged from the pump 121 side to the storage bag 13, and the drainage amount can be accurately grasped.

Further, in the medical drainage device 2 of the present embodiment as well, the catheter 3 is adsorbed to the human tissue by releasing the closure of the gas flow path in the tube 151 by the clip 19. If this is the case, this adsorption can be released.
Further, the milking action can be performed by the same method as in the above embodiment.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the first embodiment, the atmosphere is introduced into the tube 151 and the connection tube 11 through the sterilization filter 152, but the sterilization filter 152 may not be provided. For example, the cleaned air may be introduced into the tube 151 and the connecting tube 11 by filling the container with purified air and connecting the tube 151 to the container. By squeezing and releasing the pump 121, the inside of the connecting tube 11 becomes negative pressure, but the pressure inside the container filled with purified air is a negative pressure generated inside the connecting tube 11. It is preferably higher than the maximum value. If the pressure inside the container is higher than the maximum negative pressure generated in the connecting tube 11, the clip 19 is removed when the negative pressure in the connecting tube 11 reaches the maximum value, and the pressure difference is reduced. The gas can be supplied into the connecting tube 11 by using it. More preferably, the pressure inside the container (the pressure of the gas supply source) is equal to or higher than the atmospheric pressure.
Alternatively, a container filled with purified air may be squeezed to force air into the tube 151.

Furthermore, in the said embodiment, although the flow path in the tube 151 was opened and closed by the clip 19, it is not restricted to this, For example, the connection via the tube 151 is closed by closing the opening of the edge part of the tube 151. The supply and stop of gas to the tube 11 may be performed.
Moreover, in each said embodiment, although the pump 121 was comprised with the spherical hollow elastic body, it is not restricted to this, For example, you may be comprised with the bellows-shaped hollow elastic body.

DESCRIPTION OF SYMBOLS 1 Medical drainage tool 2 Medical drainage tool 3 Catheter 10 Suspension member 11 Connection tube 12 Aspirator 13 Storage bag 15 Gas supply means 16 Drain pipe 17 Check valve 18 Support member 19 Clip 25 Gas supply means 90 Medical Drainage tool 91 Aspirator 92 Collection bag 93 Tube 111 End 112 End 121 Pump 122 First connection 123 Second connection 124 Check valve 124A Main body 124B Valve body 131 Vent port 132 Ventilation filter 151 Tube 152 Removal Bacteria filter

Claims (10)

A medical drainage device for aspirating and storing drainage,
A connecting tube connected to the catheter;
An aspirator configured to include a hollow elastic body connected to the connection tube;
A storage bag connected to the hollow elastic body of the suction device and storing the drained liquid sucked through the connection tube and the hollow elastic body;
A check valve that allows gas and drainage flowing from the hollow elastic body of the suction device to the storage bag, and prevents flow of gas and drainage from the storage bag to the hollow elastic body of the suction device. And
A medical drainage device, wherein a gas supply means for supplying gas into the connection tube is connected to the connection tube. The medical drainage device according to claim 1, wherein
The aspirator passes gas and drainage flowing from the connecting tube to the hollow elastic body of the aspirator, and flows gas and drainage from the hollow elastic body of the aspirator to the connecting tube. Medical drainage device with other check valve to prevent. The medical drainage device according to claim 1 or 2,
The said gas supply means is a medical drainage tool connected to the area | region from the center part of the longitudinal direction of the said connection tube to the part connected to the said suction device among the said connection tubes. The medical drainage device according to any one of claims 1 to 3,
A medical drainage device comprising switching means for switching between supply and stop of gas from the gas supply means. The medical drainage device according to any one of claims 1 to 4,
The gas supply means includes a tube having one end connected to the connection tube;
A gas source connected to the other end of the tube;
A medical drainage device in which the pressure of the gas supply source is higher than the maximum value of the negative pressure generated in the connecting tube by pressing the elastic body and releasing the pressing. The medical drainage device according to claim 5, wherein
The medical drainage device wherein the gas supply source has an atmospheric pressure equal to or higher than atmospheric pressure. The medical drainage device according to claim 5 or 6,
The other end of the tube of the gas supply means is a medical drainage tool connected to the atmosphere as the gas supply source. The medical drainage device according to claim 7,
The tube is provided with a sterilization filter,
A medical drainage device in which the air that has passed through the sterilization filter is supplied into the connection tube. The medical drainage device according to claim 5 or 6,
The gas supply source is the storage bag in which gas exists.
The other end of the tube of the gas supply means is a medical drainage tool connected to a storage bag that is the gas supply source. The medical drainage device according to any one of claims 1 to 9,
While squeezing the hollow elastic body of the aspirator and releasing the squeezing, the inside of the connection tube and the inside of the hollow elastic body are set to a negative pressure, and the negative pressure causes the drained liquid to be used for the connection. Sucked inside the tube and the hollow elastic body,
The drained liquid sucked into the elastic body is stored in the storage bag via the check valve,
By supplying the gas from the gas supply means to the connection tube, the gas is supplied into the elastic body through the connection tube, and the pressure in the elastic body is increased,
A medical drainage tool configured to facilitate the drainage of the elastic body flowing into the storage bag.

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