JPH0866477A - Method of manufacturing rectum catheter - Google Patents

Abstract

PURPOSE: To provide a rectum catheter which can be simply and certainly manufactured with a small number of parts. CONSTITUTION: Inside a catheter main body 2 is partitioned by a film into two passages and further, one passage is partitioned into three passages by films, the largest one is an excretory passage and a contrast medium injection passage and an air injection passage are formed on both end passages of the three passages. The middle one is a vacant passage which is not allocated for any purpose. Two balloons 11 are provided on the wall of an end of the catheter main body 2. An end cap 5 is fit to the end of the catheter main body 2 from the outside. The other end of the catheter main body 2 is inserted into an insertion mouth of a connection plug 4, a film connecting an injection port of an contrast medium and an air injection port and two locations on the outer periphery of the main body 2 are cut. The main body 2 on the cut excretory passage side is remarkably cut. The contrast medium injection passage and the air injection passage are fit as independent tubes to a projection for contrast medium injection and a projection for air injection of a tube connecting device 3 from the outside and are adhered by an adhesive agent. A plate of the tube connecting device 3 is fit to a fitting section of the connection plug 4 and is closely adhered by an adhesive agent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a rectal catheter for injecting a contrast agent such as barium or air from the human anus into the rectum, large intestine or colon for X-ray examination.

[0002]

2. Description of the Related Art A conventional rectal catheter manufacturing method is to insert a contrast agent injection pipe and an air pipe, which are independent of each other, into an elastic tubular body of a catheter such as rubber, and then insert the contrast agent injection pipe and the air pipe. The tip of the injection pipe is placed at the tip of the catheter body, and the contrast agent injection port, air injection port, and excretion port are connected to a branch plug that connects the rear ends of the contrast agent injection pipe and the air injection pipe to the rear end of the catheter body. In the manufacturing method, a connector provided with is fitted and the contrast agent injection pipe and the air injection pipe are connected to the contrast agent injection port and the air injection port of the connector, respectively. In this way, a separate member air injection pipe and contrast agent injection pipe are required,
Further, it takes time and effort to dispose the air injection pipe and the contrast agent injection pipe in the catheter body.

[0003]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to solve these problems of the prior art, and to manufacture easily and reliably with a small number of parts, and to mass-produce easily. Another object of the present invention is to provide a method for manufacturing a rectal catheter which can be manufactured at low cost and can be used hygienically.

[0004]

Means for Solving the Problems The constitution of the present invention which has solved the above problems is as follows: 1) The inside of a flexible rectal catheter body is divided into four or more passages by a membrane, and a contrast material injection passage and an air injection are provided. Two of the passages and the excretory passages are assigned to the passage separated by at least one passage, and the remaining passages are assigned to any of the assigned passages that are adjacent to each other via a membrane, and the catheter body Is a method for manufacturing a rectal catheter in which the proximal end of the allocated passage is connected to each corresponding tube, wherein the proximal end of the catheter body is introduced into the separation chamber in a watertight manner, and one passage is separated in the separation chamber. The membrane connecting the above two passages and the outer circumference of the catheter main body connecting between the two passages are cut at least at one outer periphery of the catheter main body to make the proximal ends of the two passages into tubes. A method for producing a rectal catheter characterized in that two tube-shaped passages and corresponding tubes are connected in a separation / separation chamber, and the remaining tubes are connected so as to communicate with the separation chamber 2) Inside the catheter body Is divided into two passages by a membrane, and one of the passages is further divided into three passages by a membrane, and a membrane connecting the passages at both ends of the three passages and two outer circumferences of the catheter body connecting the passages at both ends 1) which is obtained by cutting each
The method for producing a rectal catheter described in 3) The inside of the catheter body is divided into two passages by a membrane, one of the passages is further divided into three passages by a membrane, and a membrane that connects the passages at both ends of the three passages is formed. The method for producing a rectal catheter according to the above 1), wherein the outer circumference of the catheter body connecting the passages at both ends is cut off. 4) The inside of the catheter body is divided into two passages with a membrane, and each passage is further divided into two passages with a membrane. 1) The method for producing a rectal catheter according to 1), wherein the membrane that connects the two non-adjacent passages and the outer periphery of the catheter main body that connects the two non-adjacent passages are each cut at one location. Before dividing into two passages, each passage is further divided into two passages by a membrane, and a membrane connecting two non-adjacent passages and a catheter body outer periphery connecting two non-adjacent passages are cut. 1) The method for producing a rectal catheter according to 6) 6) The elastic rectal catheter body is divided into three passages by a membrane that does not intersect, and a contrast material injection passage, an air injection passage, and an excretion passage are provided in the passage. A method of manufacturing a rectal catheter, which comprises allocating and connecting a proximal end of a passage of a catheter body to a corresponding tube, wherein a catheter body proximal end is introduced into a separation chamber in a watertight manner to form an intermediate passage in the separation chamber. Even if the outer circumference of the main body is small, cut at one place to make the base ends of the passages at both ends into tubes, connect the two tube-formed passages and the corresponding tubes in the separation chamber, and connect the remaining tubes to the separation chamber. A method for producing a rectal catheter is characterized in that the rectal catheter is connected so as to communicate with each other.
Barium (Ba) or the like is usually used as a contrast agent. Further, the outer circumference of the catheter body and the membrane around the cut portion may be largely cut off before use. Materials for the catheter body include rubber plastic resin, waterproof paper / synthetic paper, fiber material, and synthetic resin.

[0005]

According to the present invention, the inside of the catheter body is divided into four or more passages by a membrane, and one of the passages of the contrast agent injecting passage, the air injecting passage and the excretory passage is formed at least one passage. The proximal end of the catheter body, which is assigned to a separate passage and the remaining passage is assigned to the adjacent passage through the membrane with any of the above-mentioned assigned passages, is introduced in a watertight manner into the separation chamber,
The outer circumference of the catheter body 1 with at least the membrane connecting the passages that are assigned to each other by separating at least one passage in the separation chamber
By cutting the location and the two passages separated by this one passage, the passages are divided into tubes, and the passages to which the remaining passages are allocated are cut into the above-mentioned tube-forming difference and are separated into the separation chamber. It will be released. Thereby, the passage of the tube-shaped catheter body is connected to the corresponding tubes in the separation chamber, and the remaining tubes are connected so as to communicate with the separation chamber.

If the inside of the catheter body according to claims 2 and 3 is divided into two passages by the membrane and one passage is further divided into three passages by the membrane, both ends of the passage divided into these three passages are divided. By cutting the membrane connecting the passages and the outer circumference of the catheter body at one or all locations, the passages at both ends can be made into a tube. Further, the passages to which the remaining passages are assigned are cut into the above-mentioned tube-like difference and released into the separation chamber.

As described in claims 4 and 5, the inside of the catheter body is divided into two passages by a membrane, and each passage is further divided by a membrane.
If it is divided into two passages, the membrane connecting the two non-adjacent passages and one or all of the outer circumference of the catheter body can be cut into two passages separated from each other to form a tube. Further, the passages to which the remaining passages are assigned are cut into the above-mentioned tube-like difference and released into the separation chamber.

According to a sixth aspect of the present invention, in the catheter body, the inside of the catheter body is divided into three passages by membranes that do not intersect, and the contrast agent injection passage, the air injection passage and the excretion passage are assigned to the passages. By cutting one or all of the catheter body in the intermediate passage, the passages at both ends can be made into a tube. The intermediate passage is cut off when the tube is formed, and is opened inside the separation chamber. The tube-shaped passage is connected to the corresponding tube, and the remaining tubes are connected so as to communicate with the separation chamber, and the passage opened in the separation chamber is connected to the tube connected to the separation chamber and the separation chamber. Are connected.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing a manufacturing process of this embodiment, FIG. 2 is a front view of this embodiment, FIG. 3 is a plan view of this embodiment, and FIG. 4 shows a state in which a balloon in this embodiment is inflated. Front view, FIG.
3 is a sectional view taken along the line AA in FIG. 3, FIG. 6 is a sectional view taken along the line BB in FIG. 3, FIG. 7 is a sectional view taken along the line CC in FIG. 1, and FIG.
D cross-sectional view, FIG. 9 is an explanatory view showing another example of the cut portion of the catheter body proximal end, FIG. 10 is a cross-sectional view of the catheter body showing another example, and FIG. 11 is an explanation showing the catheter body proximal end cut portion. FIG. 12, FIG. 12 is an explanatory view showing another example of the cutting portion of the catheter body proximal end, FIG. 13 is a sectional view of the catheter body showing another example, and FIG. 14 is an explanatory view showing the cutting portion of the catheter body proximal end. FIG. 15: is explanatory drawing which shows the other example of the cutting | disconnection location of a catheter body proximal end.

In the figure, 1 is a rectal catheter, 2 is a membrane 6 inside
An elastic catheter body made of a rubber material, which is divided into two passages with one membrane divided into three passages with a membrane 6.
3 is a plate 16 with a contrast agent injection port 17 and an air injection port 18
And the excretion port 19 are opened, and the peripheral edges of the openings of the contrast agent injection port 17 and the air injection port 18 are projected in both directions to provide a contrast agent injection protrusion 21 and an air injection protrusion 22.
The tube connector 4 is provided with the excretion protrusion 23 by projecting the peripheral edge in one direction, and the insertion port 13 of the catheter body 2 is provided on one side of the tube connector 4.
Is provided with a fitting portion 14 for fitting the plate 16 of the tube connector 3 on the other side, and the connecting plug 5 has an elastic force with a tip portion to be fitted on the distal end of the catheter body 2 and a hole in the peripheral wall. A tip cap, 6 is a membrane that partitions the inside of the catheter body 2, 7 is a contrast agent injection path that is partitioned by the membrane 6 and is formed inside the catheter body 2, and 8 is partitioned by the membrane 6 and is formed inside the catheter body 2. An air inflow passage, 9 is an excretion passage formed in the catheter body 2 by being divided by the membrane 6,
10 is an empty passage defined by the membrane 6 inside the catheter body 2, 11 is an inflatable and deflatable balloon provided on the peripheral wall of the front end of the catheter body 2, 12 is a pouring hole for sending air to the balloon 11. 13 is an insertion port of the connection plug 4, 1
4 is a fitting portion of the connecting plug 4, 15 is a cutting portion of the proximal end of the catheter body 2, 16 is a plate of the tube connector 3, and 17 is a plate.
Is a contrast agent injection port provided in the plate 16, 18 is an air injection port provided in the plate 16, 19 is an excretion port provided in the plate 16, 20 is a contrast agent injection port 17 and 18 is an air injection port
And a valve 21 for preventing backflow provided in the discharge port 19
Is a contrast agent injection projection provided on the plate 16, 22 is an air injection projection provided on the plate 16, and 23 is the plate 1
6 is an excretion protrusion provided at 24, 24 is a contrast medium injecting tube externally fitted to the contrast medium injecting protrusion 21, 25 is an air injecting tube externally fitted to the air injecting protrusion 22, and 26 is excretion externally fitted to the excretory protrusion 23. The tube protrusion 27 is a separation chamber into which the proximal end of the catheter body 2 is inserted.

In this embodiment, as shown in FIG. 7, the inside of the catheter body 2 is divided into two passages by the membrane 6, and one of the passages is divided into three passages by the membrane 6. The largest passage located at is the excretory passage 9, and the contrast agent injecting passage 7 and the air injecting passage 8 are formed in the passages at both ends divided into three passages, and the middle passage is not assigned to the passage. It is set to 10. Further, a tip cap 5 is externally fitted to the tip, two balloons 11 are provided on the peripheral wall of the tip of the catheter body 2, and the base end of the catheter body 2 is inserted into the insertion port 13 of the connecting plug 4 to make a contrast agent. Inlet 7 and air inlet 8
The membrane 6 that connects the and the catheter body 2 is cut at two outer peripheries, and the cut catheter body 2 on the excretory passage 9 side is largely cut off, and the contrast agent injection passage 7 and the air injection passage 8 are formed into independent tubes. Contrast agent injection projection 2 of tube connector 3
1 and the air injection projection 22 are externally fitted and connected with an adhesive,
The plate 16 of the tube connector 3 is fitted into the fitting portion of the connecting plug 4 and is brought into close contact with an adhesive to make the inside of the connecting plug 4 a separation chamber door. As a result, the cutting portion 15 at the proximal end of the catheter body 2 is located in the figure belt hand separation chamber 27, the distal end of the body of the rectal catheter 1 is inserted into the human anus, and air is sent from the injection hole 12 to insert one balloon 11 into the anus. And inflate the other balloon 11 in the same way outside the anus,
The contrast agent such as barium which is attached to the anus by attaching the tip of the catheter body 2 to the anus is guided from the tip of the catheter body 2 to the proximal side of the catheter body 2 along the excretory passage 9,
The intestinal substance or the entrapping contrast agent injected from the cutting portion 15 is the connection plug 4
The waste is discharged into the separation chamber 27 inside and the waste is discharged into the separation chamber 27 through the empty passage 10. The discharged waste is provided on the plate 16 of the tube connector 3. Excretion tube 2 from inside the connecting plug 4 via the excretion port 19
It will be discharged after 6 years. Further, the contrast agent such as barium passes through the contrast agent injection port 17 provided in the plate 16 of the tube connector 3 along the contrast agent injection tube 24, and also passes through the contrast agent injection path 7 of the catheter body 2 and the catheter body. It leads to the tip of 2. Similarly for air, the air injection tube 25
Along the path through the air injection port 18 provided in the plate 16 of the tube connector 3 and also through the air injection path 8 of the catheter body 2 to the tip of the catheter body 2. In this way, the contrast agent, air, and excrement do not mix in each passage, and can be used hygienically. Further, the valves provided in the contrast agent injection port 17, the air injection port 18, and the discharge port 19 respectively prevent backflow. The hollow passage 10 is used not only when the tip is not closed but also when the tip is closed.

The empty passage 10 is used not only when the tip is not closed but also when the tip is closed. In addition, as an example of the connection between the connecting plug and the tube connector, a brim is provided on the periphery of the fitting portion of the connecting plug, and a protruding portion that comes into contact with the flange is provided on the plate periphery of the tube connector to connect the tube connector to the connecting plug. The tube connector is fused to the connecting plug and the protruding portion of the tube connector is brought into close contact with the flange of the connecting plug, and ultrasonic waves are applied in this state to fuse the tube connector to the connecting plug.

In another example of the cutting shown in FIG. 9, the inside of the catheter body 2 is divided into four parts by the membrane 6 as shown in FIG. 7, and the contrast agent injection path 7 and the air injection path are the same as in FIG. 8 and an excretory route 9 are provided. Also, the membrane 6 connecting the contrast agent injection path 7 and the air injection path 8 and the catheter body 2 are cut, and the contrast agent injection path 7 and the air injection path 8 are formed into independent tubes, and the tube connector 3 is used as described above. Contrast agent injection projection 21
And the air injection protrusion 22. Other reference numerals / structures and operational effects are the same as those of the present embodiment.

In another example shown in FIGS. 10 and 11, the membrane 6 is 2
The membrane 6 is divided into two passages so as to be orthogonal to the membrane 6.
The two passages are further divided into two passages, and the membrane 6 which divides the two passages into four is used as the catheter body 2 which is not in a linear position. Is the contrast agent injection path 7, the lower left path is the excretion path 9, the upper left path is the air injection path 8, and the upper right path is the empty path 10. Further, the outer circumference of the catheter main body 2 forming the excretory passage 9 and the empty passage 10, the excretory passage 9 and the empty passage 10
The membrane 6 for partitioning and is cut to form the contrast agent injection path 7 and the air injection path air injection path 8 as independent tubes, which are respectively connected to the contrast agent injection projection 21 and the air injection projection 22 of the tube connector 3. To do. Other configurations, reference numerals, and operational effects are the same as those in the present embodiment.

In another example shown in FIG. 12, as in the case of FIG.
A catheter body 2 having the same configuration as the catheter body 2 shown in FIG.
The membrane 6 that divides the catheter body 2 that forms the excretory passage 9 and the empty passage 10 and the excretory passage 9 and the empty passage 10 by using
Is cut to form a tube in which the contrast agent injection path 7 and the air injection path 8 are connected by the catheter body 2, and are connected to the contrast agent projection 21 and the air injection projection 22 of the tube connector 3, respectively.

In another example shown in FIG. 13, the inside of the catheter body 2 is divided into three passages by a membrane 6 provided in parallel, and passages at both ends are provided in a contrast agent injection passage 7 and an air injection passage 8, respectively. Is defined as the excretory route 9. In addition, one point on the outer circumference of the catheter body 2 forming the excretion path 9 is cut to form the contrast agent injection path 7 and the air injection path 8 into a tube connected by the catheter body 2, and the contrast agent injection of the tube connector 3 is performed respectively. Protrusion 2
1 and the air injection projection 22. Other configurations, reference numerals, and operational effects are the same as those in the present embodiment.

Another example of the catheter body 2 shown in FIG.
Like the other example shown in FIG. 13, the inside is divided into three passages by the membrane 6, and similarly, a contrast agent injection passage 7, an air injection passage 8 and an excretion passage 9 are provided. As a result, the outer circumference of the catheter body 2 connecting the contrast agent injection path 7 and the air injection path 8 is divided into two.
By cutting the site, the contrast agent injection path 7 and the air injection path 8 are formed into independent tubes at the proximal end of the catheter body 2, and are connected to the contrast agent injection projection 21 and the air injection projection 22 of the tube connector 3. Other configurations, reference numerals, and operational effects are the same as those in the present embodiment.

The proximal end of the catheter body 2 connected to the tube connector 3 is not limited to the contrast agent injection path 7 and the air injection path 8, but the air injection path 8 and the excretion path 9 or the contrast agent injection path 7 and the excretion path. 9 and 9 may be connected to the tube connector 3.

[0019]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, the inside is a film.
Introduce the catheter body proximal end, which is divided into two or more passages and assigns two passages among contrast agent injection passages, air injection passages, and excretion passages by separating at least one passage, and introduces these two passages. These two passages can be made into tubes and the distance can be widened by simply cutting the membrane that connects them and the catheter body. Any of contrast agent injection tube, air injection tube, and excretion tube. It can be easily connected to the crab, and by cutting the catheter body, the remaining passages are opened into the separation chamber, and this passage is the remaining contrast agent injection tube, air injection tube, excretion tube connected to the separation chamber. It will be in the state of communicating with either of them via the separation chamber. Thus, since the catheter main body serves as both the conventional contrast agent injection pipe and the air injection pipe, the contrast agent injection pipe and the air injection pipe, which are separate members, are not required, and the contrast agent injection pipe is There is no need to arrange the air injection pipe and the catheter body inside the catheter body. For this reason, it is possible to easily and reliably manufacture with a small number of parts and without trouble, it is possible to reduce the manufacturing cost, and it is also possible to reduce the cost by mass production.

In the catheter body according to claims 2 and 5,
The two passages that are integrally connected by cutting the predetermined membrane and the outer circumference of the catheter body can be very easily formed as independent tubes, and the distance between the two passages becomes long, so that the total material injection tube, air injection tube, and discharge tube It will be easy to connect with two of the tubes.

In the catheter body according to claims 3 and 4,
A predetermined membrane and one part of the catheter body are cut to form a tube in which two passages that are integrally connected are connected by the catheter body, and the distance between the two passages becomes longer, and the contrast agent injection tube, air injection tube, and discharge It will be easy to connect with two of the tubes.

According to the sixth aspect of the present invention, the inside of the catheter body is divided into three passages by membranes that do not intersect with each other, and passages of a contrast agent injection passage, an air injection passage and an excretion passage are assigned to the passages, and the proximal end of the catheter body is The passages at both ends can be easily made into tubes by introducing water-tightly into the separation chamber and cutting the outer circumference of the catheter body that connects the passages at both ends, while leaving the remaining passages open in the separation chamber. , It becomes easy to connect the tube-shaped passage to the corresponding tube, and the passage opened to the separation chamber is connected to the tube connected to the separation chamber and connected through the separation chamber.
It can be easily and reliably manufactured with a small number of parts and without trouble, the manufacturing cost can be reduced, and the cost can be reduced by mass production.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a manufacturing process of this embodiment.

FIG. 2 is a front view of the present embodiment.

FIG. 3 is a plan view of this embodiment.

FIG. 4 is a front view showing a state where a balloon is inflated in the present embodiment.

5 is a cross-sectional view taken along the line AA in FIG.

6 is a sectional view taken along line BB in FIG.

FIG. 7 is a sectional view taken along line CC of FIG.

8 is a cross-sectional view taken along the line DD in FIG.

FIG. 9 is an explanatory view showing another example of the cut portion of the proximal end of the catheter body.

FIG. 10 is a cross-sectional view of a catheter body showing another example.

FIG. 11 is an explanatory view showing a cut portion of the proximal end of the catheter body.

FIG. 12 is an explanatory view showing another example of the cut portion of the proximal end of the catheter body.

FIG. 13 is a cross-sectional view of a catheter body showing another example.

FIG. 14 is an explanatory view showing a cut portion of the proximal end of the catheter body.

FIG. 15 is an explanatory view showing another example of the cut portion of the proximal end of the catheter body.

[Explanation of symbols]

 1 rectal catheter 2 catheter body 3 tube connector 4 connecting plug 5 tip cap 6 membrane 7 contrast agent injection channel 8 air injection channel 9 excretion channel 10 empty channel 11 balloon 12 injection port 13 insertion port 14 fitting part 15 cutting part 16 plate 17 Contrast agent injection port 18 Air injection port 19 Exhaust port 20 Valve 21 Contrast agent injection protrusion 22 Air injection protrusion 23 Excretion protrusion 24 Contrast agent injection tube 25 Air injection tube 26 Excretion tube 27 Separation chamber

Claims (6)

[Claims] 1. A flexible rectal catheter main body is divided into four or more passages by a membrane, and two passages among a contrast material injection passage, an air injection passage and an excretion passage are at least one passage. To each of the assigned passages, and to assign any of the assigned passages a remaining passage to the adjacent passage through the membrane and connect the proximal end of the assigned passage of the catheter body to the corresponding tube. A method for manufacturing a rectal catheter, which comprises introducing a catheter body proximal end into a separation chamber in a watertight manner, and connecting the above-mentioned two passages separated by one passage in the separation chamber and between the two passages. At least one outer circumference of the catheter body connecting the two ends is cut to form a tube at the proximal ends of the two passages, and the two tubed passages and the corresponding tubes are separated. Connect the separation chamber, the manufacturing method rectal catheter, characterized in that connected to the remainder of the tube to separate the indoor and communicating. 2. The inside of the catheter main body is divided into two passages by a membrane, and one passage is further divided into three passages by the membrane, and a membrane connecting both passages of the three passages and a passage at the same end. The method for producing a rectal catheter according to claim 1, wherein the outer circumference of the catheter body that connects the two is cut off. 3. The inside of the catheter body is divided into two passages by a membrane, and one passage is further divided into three passages by the membrane, and a membrane connecting both passages of the three passages and a passage at the same end. The method for producing a rectal catheter according to claim 1, wherein the outer periphery of the catheter body that connects the two is cut. 4. The inside of the catheter body is divided into two passages by a membrane, each passage is further divided into two passages by a membrane, and a membrane connecting two non-adjacent passages and a non-adjacent passage are connected. The method for producing a rectal catheter according to claim 1, wherein the outer circumference of the catheter body is cut at one location. 5. The inside of the catheter body is divided into two passages by a membrane, each passage is further divided into two passages by a membrane, and a membrane connecting two non-adjacent passages and a non-adjacent passage are connected. The catheter body outer circumference is cut at two locations.
A method for producing the described rectal catheter. 6. A flexible rectal catheter body is divided into three passages with a membrane that does not intersect, and a contrast material injection passage, an air injection passage, and an excretion passage are assigned to the passage, and the passage of the catheter body is provided. A method of manufacturing a rectal catheter in which a proximal end of a catheter body is connected to each corresponding tube by introducing a catheter body proximal end into a separation chamber in a watertight manner and forming an intermediate passage in the separation chamber, even if the outer circumference of the catheter body is small. The base ends of the passages at both ends were made into tubes by cutting at one location, and the two tubed passages and the corresponding tubes were connected in the separation chamber, and the remaining tubes were connected so as to communicate with the separation chamber. A method for producing a rectal catheter, comprising: