A positive pressure connector, an adapter connector, and a tee valve

Abstract

This application belongs to the field of medical auxiliary devices, specifically relating to an auxiliary device for facilitating bladder irrigation, and more specifically to a positive pressure connector, an adapter connector, and a three-way valve. The three-way valve has a catheter connection end, a urine bag connection end, and an irrigation connection end on its valve seat, used to connect the catheter, urine bag, and irrigation infusion tubing, respectively. By rotating or pressing the valve core, the direction of fluid flow can be directly changed, simplifying the bladder irrigation operation. Simultaneously, a positive pressure connector is provided at the irrigation connection end to prevent bladder fluid from flowing out from the irrigation connection end due to accidental removal of the irrigation infusion tubing, such as when the valve core is not switched to the correct position.

Description

Technical Field

[0001] This application belongs to the field of medical auxiliary devices, specifically relating to an auxiliary device for facilitating bladder irrigation, and more specifically to a positive pressure connector, an adapter connector, and a three-way valve. Background Technology

[0002] Bladder irrigation is a method that uses a catheter to infuse a solution into the bladder, and then uses the siphon principle to drain the infused fluid out.

[0003] Flushing with large amounts of labor-saving saline or antibiotic solution is used to treat bacterial cystitis and to clear blood clots, mucus, bacteria, etc. from the bladder. It is an important pre- and post-operative treatment for certain bladder diseases, benign prostatic hyperplasia, and other lower urinary tract diseases.

[0004] Current flushing methods involve either intravenous flushing via direct needle insertion into the urinary catheter or the use of a bladder irrigator.

[0005] Repeated flushing of the needle prick site after inserting a needle into the urinary catheter can easily lead to urine leakage.

[0006] The steps of existing bladder irrigation devices (refer to Chinese Utility Model CN222383888U and Chinese Invention Publication CN119564953A) include:

[0007] The first step is to clamp the urinary catheter with ovum forceps and separate the catheter from the urine bag.

[0008] The second step is to connect the urine bag interface to the bladder irrigation device drainage tube;

[0009] The third step is to connect the catheter to the flushing tube of the bladder irrigator.

[0010] (Note: The flushing tube, drainage tube, and main infusion tube are connected by a T-connector. The flushing tube is connected to the urinary catheter and then to the bladder. The drainage tube is connected to the urine bag for drainage.)

[0011] Fourth step: Loosen the ovum forceps, close the drainage tube, and open the flushing tube; after flushing for a period of time, close the flushing tube and open the drainage tube.

[0012] Repeat the above steps to complete bladder irrigation.

[0013] In the above procedures, medical staff need to clamp and loosen the urinary catheter, and separate and reconnect the catheter. Each step of the flushing process needs to be accompanied by disinfection procedures. Utility Model Content

[0014] Technical problem: The technical problem to be solved by this application is to provide a three-way valve with a positive pressure connector, which is pre-connected to the urinary catheter, not only avoiding the problem of urine leakage caused by needle puncture of the urinary catheter, but also eliminating the need for insertion and removal and disinfection steps between the urinary catheter and the urine bag.

[0015] Technical Solution: To solve the above-mentioned technical problems, this application provides a three-way valve with a catheter connection end, a urine bag connection end, and a flushing connection end on the valve seat, which are used to connect the catheter, urine bag, and flushing infusion tube, respectively. By rotating or pressing the valve core, the direction of liquid flow can be directly changed, simplifying the operation steps of bladder flushing. At the same time, a positive pressure connector is set at the flushing connection end to prevent the flushing infusion tube from being pulled out due to misoperation such as the valve core not being switched to the correct position, which would cause the bladder fluid to flow out from the flushing connection end.

[0016] Specifically as follows:

[0017] A positive pressure connector includes a main pipe and a resilient inner core, the resilient inner core being disposed within the inner cavity of the main pipe, and the resilient inner core comprising, in sequence:

[0018] The supporting part is a base placed inside the cavity;

[0019] The elastic component is used to provide elasticity to the elastic inner core;

[0020] The plug is located at the inlet of the main pipe;

[0021] The support section, the elastic section, and the plug form a liquid guiding cavity. The plug section has a liquid guiding hole, and the bottom of the support section has a connecting hole.

[0022] When connecting the flushing tubing, press the plug with the adapter of the flushing tubing, allowing the flushing fluid to flow from the drainage hole on the plug through the connecting hole and into the bladder along the catheter. After flushing is complete, remove the adapter. The spring-loaded part causes the plug to spring back, and the drainage hole closes after contacting the main tube. If, due to misoperation or other reasons, the three-way valve does not switch to the correct fluid flow path at this time, it can prevent fluid from flowing out of the bladder.

[0023] Furthermore, a first frustum is provided above the bottom through hole of the main tube as a base for placing the elastic inner core.

[0024] The upper part of the main tube is provided with a second truncated cone opposite to the base as a sealing seat. The sealing seat is opposite to or in contact with a part of the plug; that is, when pressed, the two are relative and there is a certain distance between them, and after the pressing is removed, the two are in contact and sealed.

[0025] The top of the main pipe has a through-hole for flushing fluid to flow in and for connecting the adapter.

[0026] Furthermore, the plug includes a contact surface opposite to the sealing seat and an insert head located in the middle of the contact surface. The diameter of the insert head is smaller than that of the contact surface, and the height is greater than that of the contact surface. In the unused state, the insert head is nested into the top through hole, and the contact surface contacts and seals with the sealing seat.

[0027] The fluid guiding holes are evenly distributed around the periphery of the contact surface and extend into the fluid guiding cavity. The inner edge near the insert head is closed, which provides a better one-way sealing effect when in contact with the sealing seat.

[0028] Furthermore, the elastic part is composed of elastic pleats made of elastic rubber or springs embedded in flexible materials.

[0029] This application also provides an adapter, which includes a connecting part and a pressing part. The connecting part is used to connect to the upper part of the main pipe, and the pressing part is used to be embedded in the top through hole.

[0030] An infusion port is provided on the side wall of the infusion section near the bottom. After connecting the adapter, open the roller clamp on the infusion tube, and the flushing fluid flows along the infusion port, through the guide hole, and into the target area.

[0031] Furthermore, the infusion port is hollow, and the infusion hole extends through its cavity;

[0032] The connecting part includes a connecting base plate connected to the top of the pressing part, and a connecting sleeve disposed around the connecting base plate; the connecting sleeve and the main pipe are selected to be nested, snap-fitted or threaded.

[0033] The connecting sleeve is bounded by the base plate, with the positive pressure connector on one side of the pressing part and the infusion tube on the other side.

[0034] This application also provides a three-way valve, which includes a valve seat and a valve core.

[0035] The valve seat is provided with at least three ports: a catheter connection end, a urine bag connection end, and an infusion tube connection end;

[0036] The fluid conduction passage of the valve core is connected to the urine catheter connection end and the urine bag connection end / infusion tube connection end respectively;

[0037] The infusion tubing connection is equipped with a positive pressure connector.

[0038] Furthermore, the valve seat is a cylindrical shell, with the catheter connection end, urine bag connection end, and infusion tube connection end respectively located on the side wall of the shell, and the main body of the valve core is a cylinder embedded in the shell.

[0039] The valve core has two channels at different positions on the same plane from its end face. The first channel can connect the catheter connection end and the urine bag connection end.

[0040] The second channel connects the urinary catheter connection to the infusion tubing connection. The direction of fluid flow can be switched by rotating the valve core.

[0041] Furthermore, the valve seat is a cylindrical shell, with the catheter connection end, urine bag connection end, and infusion tube connection end respectively located on the side wall of the shell, and the main body of the valve core is a cylinder embedded in the shell.

[0042] The valve core has two channels on a plane at different distances from its cross-section. The first channel can connect the catheter connection end and the urine bag connection end.

[0043] The second channel connects the catheter connection to the IV tubing connection. The flow direction of the fluid can be switched by pressing the valve core.

[0044] The beneficial effects of this application are as follows:

[0045] 1. Simplify operation steps and improve efficiency.

[0046] By pre-installing a three-way valve on the urinary catheter, combined with the design of a positive pressure connector and an adapter, medical staff no longer need to repeatedly clamp and loosen the urinary catheter or separate the connection between the urinary catheter and the urine bag. They can simply switch the direction of fluid flow by rotating or pressing the valve core, which greatly simplifies the bladder irrigation procedure, reduces operation time, and improves work efficiency.

[0047] 2. Prevent urinary incontinence and improve safety.

[0048] Compared to the traditional method of irrigating by inserting needles into a urinary catheter, this application uses a three-way valve to directly connect the urinary catheter, urine bag, and irrigation infusion tubing, avoiding the problem of urine leakage from needle pricks caused by repeated needle pricks. At the same time, the elastic sealing design of the positive pressure connector can effectively prevent bladder fluid from flowing out of the irrigation connection end in case of accidental removal of the irrigation tubing (such as when the valve core is not switched to the correct position), thus improving the safety of use.

[0049] 3. Reduce the risk of infection

[0050] Traditional flushing methods require multiple sterilization steps for separating and reconnecting the catheter to the urine bag, increasing the risk of cross-infection. The three-way valve design in this application eliminates the need for insertion / removal and additional sterilization procedures, reducing the chance of external bacteria entering the system and thus lowering the risk of infection.

[0051] 4. Simple structure and easy to use

[0052] The positive pressure connector achieves unidirectional sealing and fluid flow through the cooperation of an elastic inner core and an adapter. Its compact and rational structural design makes it easy to operate. The infusion port of the adapter seamlessly connects with the fluid guide passage of the three-way valve, ensuring smooth flow of irrigation fluid into the bladder. The flow direction is switched when ready for removal, and it automatically closes after removal, allowing medical staff to quickly learn how to use it.

[0053] 5. Highly adaptable and widely applicable

[0054] The three-way valve features a flexible design for its catheter connection, urine bag connection, and infusion tubing connection, allowing it to adapt to different sizes of catheters and infusion equipment. The versatility of its positive pressure connector enables its widespread application in bladder irrigation and other medical scenarios requiring positive pressure sealing, making it highly practical.

[0055] In summary, this application, through the synergistic effect of the positive pressure connector, the adapter connector, and the three-way valve, not only solves the problems of cumbersome operation, leakage, and high risk of infection in traditional bladder irrigation, but also significantly improves the work efficiency of medical staff and the safety of patients. Attached Figure Description

[0056] Figure 1 This is a three-dimensional schematic diagram of the main body in Embodiment 1 of this application;

[0057] Figure 2 This is a schematic diagram of the internal structure of the main unit in Embodiment 1 of this application;

[0058] Figure 3 , 4 This is a schematic diagram of the elastic inner core of Embodiment 1 of this application;

[0059] Figure 5 This is a schematic diagram of the positive pressure connector according to Embodiment 1 of this application;

[0060] Figure 6 This is a cross-sectional view of the positive pressure connector according to Embodiment 1 of this application;

[0061] Figure 7-9 This is a schematic diagram of the adapter connector according to Embodiment 2 of this application;

[0062] Figure 10 This is a schematic diagram of the connection and function of the adapter and the positive pressure connector, combining Embodiment 1 and Embodiment 2 of this application.

[0063] Figure 11 This is a front view schematic diagram of Embodiment 3 of this application;

[0064] Figure 12 This is a perspective view of Embodiment 3 of this application;

[0065] Figure 13 , 14 This is a cross-sectional view of Embodiment 3 of this application;

[0066] Figure 15-17 This is a schematic diagram of Embodiment 4 of this application, wherein Figure 16 For flushing guidance, Figure 17 To guide urination.

[0067] In the diagram: 1. Main pipe; 2. Elastic inner core; 3. Inner cavity; 4. Bottom through hole; 5. Base; 6. Support part; 7. Elastic part; 8. Plug; 9. Liquid guiding chamber; 10. Liquid guiding hole; 11. Connecting hole; 12. Sealing seat; 13. Top through hole; 14. Contact surface; 15. Embedded head; 16. Connecting part; 17. Press-in part; 18. Infusion hole; 19. Connecting base plate; 20. Connecting sleeve; 21. Valve seat; 22. Valve core; 23. First channel; 24. Second channel; 25. Knob; 26. Press end. Detailed Implementation

[0068] Example 1:

[0069] like Figure 1-6 As shown: A positive pressure connector includes a main pipe 1 and an elastic inner core 2. The elastic inner core 2 is disposed in the inner cavity 3 of the main pipe 1. A first frustum is disposed above the bottom through hole 4 of the main pipe 1 as a base 5 for placing the elastic inner core 2.

[0070] The elastic inner core 2 includes, in sequence:

[0071] Support part 6, for placing the base 5 in the inner cavity 3;

[0072] The elastic part 7 is used to provide elasticity to the elastic inner core 2; the elastic part 7 is composed of elastic pleats made of elastic rubber or springs embedded in flexible materials.

[0073] Plug 8 is located at the inlet of main pipe 1;

[0074] The support part 6, the elastic part 7, and the plug 8 form a liquid guiding cavity 9. The plug 8 has a liquid guiding hole 10, and the bottom of the support part 6 has a connecting hole.

[0075] The upper part of the main pipe 1 is provided with a second truncated cone opposite to the base 5 as a sealing seat 12. The sealing seat 12 is opposite to or in contact with a part of the plug 8; that is, when pressed, the two are relative and there is a certain separation distance, and after the pressing is removed, the two are in contact and sealed.

[0076] The top of the main pipe 1 has a top through hole 13 for flushing fluid to flow in and for connecting the adapter.

[0077] The plug 8 includes a contact surface 14 opposite to the sealing seat 12 and an insert head 15 located in the middle of the contact surface 14. The diameter of the insert head 15 is smaller than that of the contact surface 14, and the height is greater than that of the contact surface 14. In the unused state, the insert head 15 is nested into the top through hole 13, and the contact surface 14 contacts and seals the sealing seat 12.

[0078] Liquid guiding holes 10 are evenly distributed around the periphery of the contact surface 14 and extend into the liquid guiding cavity 9. The inner edge near the insert head 15 is closed, which provides a better one-way sealing effect when in contact with the sealing seat 12.

[0079] When connecting the flushing tubing, the adapter of the flushing tubing presses against the plug 8, allowing the flushing fluid to flow from the guide hole 10 on the plug 8 through the connecting hole 11 and along the catheter into the bladder. After flushing is complete and the adapter is removed, the elastic part 7 causes the plug 8 to spring back, and the guide hole 10 closes after contacting the main tube 1. This prevents fluid from flowing out of the bladder if the three-way valve fails to switch to the correct flow path due to misoperation or other reasons.

[0080] Example 2:

[0081] like Figure 7-10 As shown, this application also provides an adapter for adapting to the positive pressure connector of Embodiment 1. The adapter includes a connecting part 16 and a pressing part 17. The connecting part 16 is used to connect to the upper part of the main pipe 1, and the pressing part 17 is used to be embedded in the top through hole 13.

[0082] An infusion port 18 is provided on the side wall of the infusion section 17 near the bottom. After connecting the adapter, the roller clamp on the infusion tube is opened, and the flushing fluid flows along the infusion port 18, through the guide hole 10, and into the target area.

[0083] The inlet 17 is hollow, and the infusion hole 18 extends through its cavity;

[0084] The connecting part 16 includes a connecting base plate 19 connected to the top end of the pressing part 17, and a connecting sleeve 20 disposed around the connecting base plate 19; the connecting sleeve 20 is threadedly connected to the main pipe 1.

[0085] With the base plate as the boundary, the connecting sleeve 20 is connected to the positive pressure connector on one side of the pressing part 17 and to the infusion tube on the other side.

[0086] Example 3:

[0087] like Figure 11-14 As shown, this application also provides a three-way valve, which includes a valve seat 21 and a valve core 22.

[0088] The valve seat 21 is provided with at least three ports: a catheter connection end, a urine bag connection end, and an infusion tube connection end;

[0089] The fluid guiding passage of valve core 22 is connected to the catheter connection end c and the urine bag connection end u / infusion tube connection end i respectively;

[0090] The infusion tubing connection is equipped with a positive pressure connector.

[0091] The valve seat 21 is a cylindrical shell, with the catheter connection end, urine bag connection end, and infusion tube connection end respectively located on the side wall of the shell. The main body of the valve core 22 is a cylinder embedded in the shell.

[0092] The valve core 22 has two channels at different positions on the same plane from its end face. The first channel 23 can connect the catheter connection end and the urine bag connection end. In this embodiment, the first channel 23 connects the catheter connection end and the urine bag connection end at both ends of the housing along the diameter direction of the middle part of the valve core 22.

[0093] The second channel 24 can connect the catheter connection end and the infusion tube connection end; in this embodiment, the second channel 24 is located on one side of the first channel 23, and is adapted to the angle of the catheter connection end and the infusion tube connection end by bending.

[0094] By rotating the valve core 22, the first channel 23 is aligned with the catheter and directed to the urine bag connection end, while the second channel 24 is aligned with the catheter connection end and directed to the infusion tube connection end.

[0095] A knob 25 is connected to the valve core 22, and a switching indicator is provided on the housing of the three-way valve.

[0096] Example 4:

[0097] like Figure 15-17 As shown, this embodiment uses a push-button switching mechanism. The valve seat 21 is a cylindrical housing. The catheter connection end, urine bag connection end, and infusion tube connection end are respectively located on the side wall of the housing. The main body of the valve core 22 is a cylinder embedded in the housing.

[0098] The valve core 22 has two channels opened on planes at different distances from its cross-section. The first channel 23 can connect the catheter connection end and the urine bag connection end. The first channel 23 connects to the catheter connection end and the urine bag connection end at both ends of the housing along the diameter direction of the valve core 22.

[0099] The second channel 24 connects the catheter connection end to the infusion tube connection end. The flow direction of the fluid can be switched by pressing the valve core 22.

[0100] The valve core 22 has two pressing ends 26 on both sides.

Claims

1. A positive pressure connector comprising a main pipe (1) and an elastic inner core (2) arranged in an inner cavity (3) of the main pipe (1), characterized in that, The elastic inner core (2) comprises, in sequence: Support portion (6), base (5) for placement in the inner cavity (3); The elastic part (7) is used to provide elasticity for the elastic inner core (2); A plug (8) is located at the opening of the main pipe (1); The supporting part (6), the elastic part (7), and the plug (8) form a liquid guiding cavity (9). The plug (8) has a liquid guiding hole (10), and the bottom of the supporting part (6) has a connecting hole.

2. A positive pressure connector as defined in claim 1, wherein, A first frustum is provided above the bottom through hole (4) of the main tube (1) as the base (5). The upper part of the main tube (1) is provided with a second frustum opposite to the base (5) as a sealing seat (12), and the sealing seat (12) is opposite to or in contact with a part of the plug (8); The top of the main tube (1) has a top through hole (13).

3. A positive pressure connector as described in claim 2, characterized in that, The plug (8) includes a contact surface (14) opposite to the sealing seat (12) and an insert head (15) located in the middle of the contact surface (14), the insert head (15) being nested into the top through hole (13). The liquid guiding holes (10) are evenly distributed around the periphery of the contact surface (14) and extend into the liquid guiding cavity (9).

4. A positive pressure connector as described in any one of claims 1-3, characterized in that, The elastic part (7) is composed of an elastic pleat or a flexible material with an embedded spring.

5. A matching connector, characterized in that, The adapter includes a connecting part (16) and a pressing part (17), the connecting part (16) being used to connect to the upper part of the main tube (1) in claim 4, and the pressing part (17) being used to embed into the top through hole (13). The side wall of the infeeding part (17) is provided with an infusion hole (18) near the bottom.

6. The adapter as described in claim 5, characterized in that, The press-in part (17) is hollow, and the infusion hole (18) extends through its cavity; The connecting part (16) includes a connecting base plate (19) connected to the top of the pressing part (17), and a connecting sleeve (20) disposed around the connecting base plate (19); the connecting sleeve (20) and the main tube (1) are selected to be nested, snap-fitted or threaded.

7. A three-way valve, the three-way valve comprising a valve seat (21) and a valve core (22), characterized in that, The valve seat (21) is provided with at least three ports: a catheter connection end, a urine bag connection end, and an infusion tube connection end; The fluid guiding passage of the valve core (22) is connected to the catheter connection end and the urine bag connection end / infusion tube connection end respectively; The infusion tube connection end is provided with the positive pressure connector as described in claim 4.

8. A three-way valve as described in claim 7, characterized in that, The valve seat (21) is a cylindrical shell. The catheter connection end, urine bag connection end, and infusion tube connection end are respectively opened on the side wall of the shell. The main body of the valve core (22) is a cylinder embedded in the shell. The valve core (22) has two channels at different positions on the same plane from its end face, wherein the first channel (23) can connect the catheter connection end and the urine bag connection end; The second channel (24) can connect the catheter connection end and the infusion tube connection end.

9. A three-way valve as described in claim 7, characterized in that, The valve seat (21) is a cylindrical shell. The catheter connection end, urine bag connection end, and infusion tube connection end are respectively opened on the side wall of the shell. The main body of the valve core (22) is a cylinder embedded in the shell. The valve core (22) has two channels opened on the planes at different distances from its cross-section, wherein the first channel (23) can connect the catheter connection end and the urine bag connection end; The second channel (24) can connect the catheter connection end and the infusion tube connection end.

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