Separation membrane joint and urinary catheter

Abstract

The utility model discloses a separation membrane connector and a urinary catheter, and relates to the field of medical instruments. The separation membrane connector and the urinary catheter are better in anti-seepage effect. The separation membrane connector comprises a connector shell, a first silica gel valve and a second silica gel valve. The connector shell is provided with a connector hole formed in the axial direction of the connector shell. The first silica gel valve is of a flat plate structure, the first silica gel valve is fixed in the connector hole and located at the front end of the connector hole, a cutting seam is formed in the first silica gel valve in the radial direction, the connector shell compresses the first silica gel valve, and the compression direction is the direction perpendicular to the cutting seam; the second silica gel valve is fixed in the connector hole and located behind the first silica gel valve, the second silica gel valve comprises a one-way valve, and the one-way valve can be opened backwards in a one-way mode. The separating membrane connector is used on the ureter to obtain the ureter, specifically, the ureter comprises a ureter body 6, a branch pipe 7 and the separating membrane connector, and the separating membrane connector is connected with the branch pipe 7.

Description

Technical Field

[0001] The utility model relates to the field of medical articles, in particular to a separation membrane joint and a urinary catheter. Background Art

[0002] A urinary catheter, also known as a urinary catheter, is a tube that is inserted from the urethra into the bladder to drain urine. The head end of the urinary catheter is inserted into the bladder, and the tail end is connected to a urine bag. The urine in the bladder is drained through the urinary catheter and then collected in the urine bag. A urinary catheter with only a connector for connecting to a urine bag at the tail end is called a single-lumen urinary catheter. In addition to the connector for connecting to a urine bag, some urinary catheters also have one or two connectors at the tail end, which are used to inject medicine into the bladder, perform bladder irrigation, or perform bladder pressure measurement. This type of urinary catheter is called a double-lumen or triple-lumen urinary catheter.

[0003] If the connector used for injecting medicine into the bladder, washing the bladder, or measuring bladder pressure is an ordinary connector, urine is easy to leak when the connecting connector of the injection, washing and pressure measurement pipeline is connected to it, so it is best to use a connector with an automatic closing function such as a diaphragm connector. The diaphragm connector is a commonly used connector for medical pipelines. The patent with application number 202120743018.6 discloses a diaphragm connector, which is provided with a connecting connector shell, which is composed of a cap and a spiral connector welded together. The cap is provided with a through hole, and the outer side of the through hole of the cap is provided with a threaded portion for connecting to an infusion set; a liquid flow channel arranged along the central axis is provided in the spiral connector, and a silicone valve is provided in the connecting connector shell. The silicone valve is in a tubular shape with a closed front end, and the front end of the silicone valve is embedded in the front end through hole of the cap, and the rear end of the silicone valve is connected to the front end of the liquid flow channel in the spiral connector. The front end surface of the silicone valve is provided with an incision that passes through the front end surface of the silicone valve, and the incision is deformed to form a liquid medicine input port.

[0004] The above-mentioned separation membrane joint is applied to a urinary catheter. When the connecting joints of the injection, flushing and pressure measurement pipelines are connected to it, the connecting joint opens the silicone valve, thereby connecting with the urinary catheter; when the connecting joint is removed, the silicone valve rebounds and the incision is closed, thereby sealing the urinary catheter; therefore, it has the effect of preventing urine from leaking out of the urinary catheter due to the connection of the joint.

[0005] But if Figure 1 As shown, when the connecting joints of the existing injection, flushing and pressure measurement pipelines are connected to the above-mentioned separation membrane joint, the connecting joint first opens the silicone valve and then is threadedly connected to the separation membrane joint; when the connecting joint is separated from the separation membrane joint, the threaded connection is first disengaged and then the silicone valve is withdrawn. In this way, there is a small period of time when the silicone valve is open and the two joints are not threadedly connected, which may cause a small amount of urine to flow out. In addition, the incision of the silicone valve relies on the fit of the cut surfaces on both sides of the incision to achieve sealing, and the sealing effect is not easy to ensure when the urine has a certain pressure. Utility Model Content

[0006] The technical problem to be solved by the present utility model is to provide a partition membrane joint with better anti-leakage effect.

[0007] The technical solution adopted to solve the above problems is: The partition membrane joint includes a joint housing, a first silicone valve and a second silicone valve; the joint housing is provided with a joint hole arranged along the axial direction of the joint housing; the first silicone valve is a flat plate structure, the first silicone valve is fixed in the joint hole and located at the front end of the joint hole, the first silicone valve is provided with a radially arranged slit, and the joint housing compresses the first silicone valve and the compression direction is perpendicular to the direction of the slit; the second silicone valve is fixed in the joint hole and located behind the first silicone valve, and the second silicone valve includes a one-way valve flap, and the one-way valve flap can be opened unidirectionally backward.

[0008] Furthermore: The partition membrane joint includes a compression ring and a positioning pin; the joint housing includes a front joint housing and a rear joint housing arranged coaxially; the front joint housing is provided with a front joint housing hole, the front end of the front joint housing hole is a first silicone valve hole, the first silicone valve hole is smaller at the front and larger at the rear, the cross-sectional shape of the first silicone valve hole is oval and the minor axis of the oval is 0.3 mm to 0.5 mm shorter than the major axis; the edge shape of the first silicone valve is conical, the first silicone valve is located in the first silicone valve hole, and the slit is arranged along the major axis direction of the first silicone valve hole; the compression ring is located in the front joint housing hole and behind the first silicone valve, the compression ring cooperates with the front joint housing hole and presses the first silicone valve forward; the positioning pin is arranged along the radial direction of the front joint housing, and the positioning pin is inserted into the front joint housing and the compression ring to fix the compression ring; the rear joint housing is connected to the front joint housing.

[0009] Furthermore: The front surface of the first silicone valve is flush with the front surface of the front joint housing.

[0010] Furthermore: The second silicone valve includes a silicone outer sleeve, the one-way valve flap is located in the silicone outer sleeve and is integrally formed with the silicone outer sleeve, the second silicone valve is located in the front joint housing hole and behind the compression ring; the rear joint housing is provided with an insertion column, the insertion column is inserted into the front joint housing hole, and the insertion column presses the silicone outer sleeve forward so that the front silicone outer sleeve fits with the compression ring.

[0011] Furthermore: The front end of the front joint housing is provided with a connecting external thread, and the rear end of the rear joint housing is provided with a connecting internal thread.

[0012] The technical problem to be solved by the present utility model is to provide a urinary catheter with better anti-leakage effect when connected to a connection joint for drug injection, irrigation and pressure measurement pipelines.

[0013] The technical solution adopted to solve the above problems is: The urinary catheter includes a urinary catheter main body and a branch pipe, and further includes the aforementioned partition membrane joint, and the partition membrane joint is connected to the branch pipe.

[0014] The beneficial effects of the present utility model are: 1. AsFigure 5 As shown, when the connecting joint is connected to the partition membrane joint, the connecting joint expands the slit and passes through the first silicone valve. At this time, the second silicone valve remains closed, which can prevent liquid leakage. As Figure 6 shown, the connecting joint is threadedly connected to the partition membrane joint and continues to be inserted. When the connecting joint expands and passes through the one-way valve, the connecting joint has been reliably threadedly connected to the partition membrane joint. Even if the liquid can pass through the first silicone valve and the second silicone valve, it cannot flow outside the connecting joint. When the connecting joint is removed, when the connecting joint and the partition membrane joint have not been disconnected, the second silicone valve closes first to prevent liquid from flowing out. Therefore, the partition membrane joint of the present utility model has the beneficial effect of better anti-leakage effect.

[0015] 2. The joint housing of the present utility model compresses the first silicone valve, and the compression direction is perpendicular to the slit, which is conducive to the tighter fitting of both sides of the slit and also conducive to improving the anti-leakage effect.

[0016] 3. When the partition membrane joint is connected to the branch pipe of the urinary catheter, when the connecting joint of the bladder drug injection, irrigation and pressure measurement pipeline is connected to the partition membrane joint, the urine in the urinary catheter is not likely to leak. Description of the Drawings

[0017] Figure 1 is the connection state diagram of the connecting joint and the existing partition membrane joint;

[0018] Figure 2 is the front view of the partition membrane joint of the present utility model;

[0019] Figure 3 is the top view of the partition membrane joint of the present utility model;

[0020] Figure 4 is the schematic diagram of the compression of the first silicone valve;

[0021] Figure 5 is the connection process diagram of the connecting joint and the partition membrane joint;

[0022] Figure 6 is the connection completed state diagram of the connecting joint and the partition membrane joint;

[0023] Figure 7 is the urinary catheter structure diagram;

[0024] In the figure, the markings are: joint housing 1, front joint housing 11, front joint housing hole 111, first silicone valve hole 1111, connecting external thread 112, rear joint housing 12, connecting internal thread 121, insertion post 122, joint hole 13, first silicone valve 2, slit 21, positioning pin 3, second silicone valve 4, one-way valve 41, silicone outer sleeve 42, pressing ring 5, urinary catheter main body 6, branch pipe 7. Detailed Embodiments

[0025] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] As Figures 2 to 4 shown, the separation membrane joint includes a joint housing 1, a first silicone valve 2 and a second silicone valve 4; the joint housing 1 has a joint hole 13 arranged along the axial direction of the joint housing 1; the first silicone valve 2 is a flat plate structure, and the first silicone valve 2 is fixed in the joint hole 13 and located at the front end of the joint hole 13. The first silicone valve 2 has a radially arranged slit 21, and the joint housing 1 compresses the first silicone valve 2 in a direction perpendicular to the slit 21; the second silicone valve 4 is fixed in the joint hole 13 and located behind the first silicone valve 2. The second silicone valve 4 includes a one-way valve flap 41, and the one-way valve flap 41 can be opened unidirectionally backward.

[0027] As Figure 5 shown, when the connection joint is connected to the separation membrane joint, the connection joint spreads open the slit 21 and passes through the first silicone valve 2. At this time, the second silicone valve 4 is still closed, which can prevent liquid leakage. As Figure 6 shown, when the connection joint is threadedly connected to the separation membrane joint and continues to be inserted, when the connection joint spreads open and passes through the one-way valve flap 41, the connection joint has been reliably threadedly connected to the separation membrane joint. Even if the liquid can pass through the first silicone valve 2 and the second silicone valve 4, it cannot flow outside the connection joint. When the connection joint is removed, when the connection joint and the separation membrane joint have not been disconnected, the second silicone valve 4 closes first to prevent liquid from flowing out. Therefore, the separation membrane joint of the present utility model has the beneficial effect of better anti-leakage effect.

[0028] In the present utility model, the joint housing 1 compresses the first silicone valve 2 in a direction perpendicular to the slit 21, which is beneficial to the tighter fitting of both sides of the slit 21 and also beneficial to improving the anti-leakage effect.

[0029] The specific manner in which the joint housing 1 compresses the first silicone valve 2 is as follows: the separation membrane joint includes a pressing ring 5 and a positioning pin 3; the joint housing 1 includes a front joint housing 11 and a rear joint housing 12 arranged coaxially; the front joint housing 11 has a front joint housing hole 111, and the front end of the front joint housing hole 111 is a first silicone valve hole 1111. The first silicone valve hole 1111 is smaller at the front and larger at the rear. The cross-sectional shape of the first silicone valve hole 1111 is an ellipse, and the minor axis of the ellipse is 0.3 mm to 0.5 mm shorter than the major axis; the edge shape of the first silicone valve 2 is conical, and the first silicone valve 2 is located in the first silicone valve hole 1111. The slit 21 is arranged along the major axis direction of the first silicone valve hole 1111; the pressing ring 5 is located in the front joint housing hole 111 and behind the first silicone valve 2. The pressing ring 5 cooperates with the front joint housing hole 111 and presses the first silicone valve 2 forward; the positioning pin 3 is arranged radially along the front joint housing 11, and the positioning pin 3 is inserted into the front joint housing 11 and the pressing ring 5 to fix the pressing ring 5; the rear joint housing 12 is connected to the front joint housing 11.

[0030] During assembly, the first silicone valve 2 is inserted into the hole 111 of the front joint housing, and then the first silicone valve hole 1111 is pushed forward; then the pressing ring 5 is inserted into the hole 11 of the front joint housing and pushed forward. The pressing ring 5 presses the first silicone valve 2 forward, so that the hole 111 of the front joint housing presses the first silicone valve 2. The shape and size of the first silicone valve hole 1111 indicate that the first silicone valve hole 1111 only presses the first silicone valve 2 slightly in the direction perpendicular to the slit 21. The purpose is to make the first silicone valve 2 deform slightly, so that the two sides of the slit 21 fit tighter, improving the anti-leakage effect. The first silicone valve 2 cannot be pressed tightly significantly, otherwise wrinkles are likely to appear on the surface, which is not convenient for disinfection. Preferably, the front surface of the first silicone valve 2 is flush with the front surface of the front joint housing 11 to facilitate disinfection.

[0031] The specific structure and fixing method of the second silicone valve 4 are preferably as follows: The second silicone valve 4 includes a silicone outer sleeve 42. The one-way valve membrane 41 is located inside the silicone outer sleeve 42 and is integrally formed with the silicone outer sleeve 42. The second silicone valve 4 is located inside the hole 111 of the front joint housing and behind the pressing ring 5; the rear joint housing 12 has an insertion post 122. The insertion post 122 is inserted into the hole 111 of the front joint housing, and the insertion post 122 presses the silicone outer sleeve 42 forward so that the front silicone outer sleeve 42 fits against the pressing ring 5.

[0032] The second silicone valve 4 is entirely made of silicone. The one-way valve membrane 41 is a prior art, which is a conical silicone thin sheet. The silicone thin sheet has slits extending outward from its center, and the two sides of the slits fit together to close the liquid. Both the rear joint housing 12 and the front joint housing 11 are made of plastic, and the two can be connected by common connection methods of plastic.

[0033] The septum membrane joint needs to be installed on the medical articles using it. Taking the urinary catheter as an example, it needs to be installed on the urinary catheter; it also needs to be connected to other joints. Taking the urinary catheter as an example, it needs to be connected to the connection joints of the drug injection, irrigation, and pressure measurement pipelines. Therefore, the septum membrane joint needs to be provided with a conventional connection structure. Specifically, a connecting external thread 112 can be provided at the front end of the front joint housing 11, and a connecting internal thread 121 can be provided at the rear end of the rear joint housing 12. It should be noted that a radial hole for inserting the positioning pin 3 needs to be provided on the front joint housing 11, and this radial hole does not affect the normal connection function of the connecting external thread 112.

[0034] This septum membrane joint can be applied to medical pipelines such as urinary catheters and infusion tubes. When applied to a urinary catheter, the urinary catheter of the present invention is obtained. Specifically, as Figure 7 shown, the urinary catheter includes a urinary catheter body 6, a branch tube 7, and the aforementioned septum membrane joint, and the septum membrane joint is connected to the branch tube 7.

[0035] When the bladder drug injection, irrigation, and pressure measurement pipelines are connected to and removed from the urinary catheter, the septum membrane joint can effectively prevent urine leakage.

Claims

1. A separator membrane joint, characterized in that: The invention comprises a joint housing (1), a first silicone valve (2) and a second silicone valve (4); the joint housing (1) is provided with a joint hole (13) arranged along the axial direction of the joint housing (1); the first silicone valve (2) is a flat plate structure, the first silicone valve (2) is fixed in the joint hole (13) and is located at the front end of the joint hole (13), the first silicone valve (2) is provided with a radially arranged slit (21), the joint housing (1) compresses the first silicone valve (2) and the compression direction is a direction perpendicular to the slit (21); the second silicone valve (4) is fixed in the joint hole (13) and is located behind the first silicone valve (2), the second silicone valve (4) comprises a one-way valve (41), and the one-way valve (41) can be opened one-way backwards.

2. The separator membrane joint according to claim 1, characterized in that: The invention comprises a clamping ring (5) and a positioning pin (3); the joint housing (1) comprises a front joint housing (11) and a rear joint housing (12) which are coaxially arranged; the front joint housing (11) is provided with a front joint housing hole (111); the front end of the front joint housing hole (111) is a first silicone valve hole (1111); the first silicone valve hole (1111) is smaller at the front and larger at the rear; the cross-sectional shape of the first silicone valve hole (1111) is an ellipse, and the minor axis of the ellipse is 0.3 mm to 0.5 mm shorter than the major axis; the edge shape of the first silicone valve (2) is a cone; the first silicone valve ( 2) is located in the first silicone valve hole (1111), and the slit (21) is arranged along the long axis direction of the first silicone valve hole (1111); the clamping ring (5) is located in the front joint shell hole (111) and is located behind the first silicone valve (2), the clamping ring (5) cooperates with the front joint shell hole (111) and pushes the first silicone valve (2) forward; the positioning pin (3) is arranged along the radial direction of the front joint shell (11), and the positioning pin (3) is inserted into the front joint shell (11) and the clamping ring (5) to fix the clamping ring (5); the rear joint shell (12) is connected to the front joint shell (11).

3. The separator membrane joint according to claim 2, characterized in that: The front surface of the first silicone valve (2) is flush with the front surface of the front joint housing (11).

4. The separator membrane joint according to claim 3, characterized in that: The second silicone valve (4) comprises a silicone outer sleeve (42), the one-way valve (41) is located in the silicone outer sleeve (42) and is formed integrally with the silicone outer sleeve (42), the second silicone valve (4) is located in the front joint shell hole (111) and is located behind the clamping ring (5); the rear joint shell (12) is provided with an insertion column (122), the insertion column (122) is inserted into the front joint shell hole (111), and the insertion column (122) pushes the silicone outer sleeve (42) forward to make the front silicone outer sleeve (42) fit the clamping ring (5).

5. The separator membrane joint according to claim 4, characterized in that: The front end of the front joint housing (11) is provided with a connecting external thread (112), and the rear end of the rear joint housing (12) is provided with a connecting internal thread (121).

6. A urinary catheter, comprising a urinary catheter body (6) and a branch tube (7), characterized in that: The partition membrane joint comprises the partition membrane joint according to any one of claims 1 to 5, wherein the partition membrane joint is connected to a branch pipe (7).

Images