Constant pressure switch for urine bag and drainage system

Abstract

The utility model discloses a constant pressure switch and drainage system for a urine bag, which comprises a shell, the shell comprises a main shell, a front cover body and a rear cover body, the main shell is provided with an input port and an output port, a liquid inlet cavity and a liquid drainage cavity are arranged in the shell, the input port is communicated with the liquid inlet cavity, the output port is communicated with the liquid drainage cavity, and the liquid drainage cavity is communicated with the front cover body. A movable sealing plate is arranged between the liquid inlet cavity and the liquid outlet cavity, the liquid inlet cavity and the liquid outlet cavity are communicated or isolated through movement of the sealing plate, and a spring is arranged between the sealing plate and the inner wall of the front cover body and / or the inner wall of the rear cover body. The scheme provides the constant pressure switch capable of protecting the urination function.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a constant pressure switch and drainage system for a urine bag. Background Technology

[0002] Indwelling catheters are commonly used for patients who require catheterization due to various diseases, including those undergoing surgery or those who are bedridden or comatose for extended periods. Currently, most urine collection bags used for indwelling catheters on the market rely on nurses to open and close the stop clamps at set times to allow urine to drain. Improper operation, such as forgetting to open the clamps, can easily lead to urine retention, resulting in secondary infections or damage to the bladder and kidneys. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a constant pressure switch and drainage system for urine bags.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A constant pressure switch for a urine bag includes a housing. The housing comprises a main shell with an input port and an output port, a front cover, and a rear cover. The housing has an inlet chamber and an outlet chamber. The input port is connected to the inlet chamber, and the output port is connected to the outlet chamber. A movable sealing plate is provided between the inlet chamber and the outlet chamber. The inlet chamber and the outlet chamber are connected or isolated by the movement of the sealing plate. A spring is provided between the sealing plate and the inner wall of the front cover and / or the rear cover.

[0006] Preferably, the constant pressure switch has a built-in spring limiting device, which is a first limiting groove located at the center of the end face adjacent to the sealing plate and the drain chamber, a second limiting groove and / or a third limiting groove located on the inner wall of the housing.

[0007] Preferably, the constant pressure switch has a built-in sealing plate guide device, which consists of guide posts on both sides of the sealing plate and guide grooves on the inner walls of the front cover and the rear cover.

[0008] Preferably, the input port is located at the top of the main housing, and the output port is located at the bottom of the main housing.

[0009] Preferably, the housing corresponding to the drain chamber is provided with an air inlet, which is covered by an air filter membrane.

[0010] Preferably, the edges of the front cover and / or the main shell and / or the rear cover are provided with slots, the center of the main shell is provided with a partition, the hollow cavity between the front cover and the partition is the liquid inlet cavity, the hollow cavity between the rear cover and the sealing plate is the liquid outlet cavity, and the center of the partition is provided with a connection port.

[0011] Preferably, the volume of the inlet chamber is smaller than that of the outlet chamber, and a bend is formed on the partition near the input port. The inner contour of the bend is adapted to the end of the sealing plate, so that the end of the sealing plate moves along the bend.

[0012] Preferably, the diameter of the connection port is smaller than that of the sealing plate, and the connection port or the sealing plate is provided with a sealing ring that can seal the connection between the two.

[0013] Preferably, the diameter of the air inlet is no greater than 0.5 mm, and the pore size of the air filter membrane is no greater than 0.5 micrometers.

[0014] The drainage system includes an inlet catheter, an outlet catheter, a drainage bag, and a constant pressure switch for the urine bag as described above. The input port of the constant pressure switch for the urine bag is connected to the inlet catheter, the output port of the constant pressure switch for the urine bag is connected to the outlet catheter, and the outlet catheter is connected to the drainage bag.

[0015] The beneficial effects of this utility model are mainly reflected in:

[0016] 1. In this solution, a movable sealing plate is used to selectively open or close the connection port by moving it. The inlet chamber can be connected to the bladder, so the input pressure in the inlet chamber is the associated pressure in the bladder. A spring is set to provide pressure in the opposite direction to the input pressure, so that the sealing plate can be opened only when the bladder reaches a certain pressure value and then automatically released. This is to train or maintain the user's normal urination function, avoid extreme situations such as prolonged bladder holding or prolonged emptying, protect the user's normal bladder function to the greatest extent, and achieve automatic opening and closing for urination without the need for medical staff to open or close it at regular intervals, thus reducing the burden on medical staff.

[0017] 2. Simultaneously setting springs in the inlet chamber and outlet chamber can ensure that the forces on both ends of the sealing plate are balanced, so that the sealing plate maintains its stable position in all directions during movement.

[0018] 3. Simultaneously, the springs in the inlet chamber and outlet chamber are designed to generate opposite forces to prevent the system from failing to open smoothly due to insufficient input pressure.

[0019] 4. The spring in the inlet chamber and the spring in the outlet chamber can be set with various elasticity specifications to form different pressure ranges to meet the needs of users with different urination pressure requirements. Attached Figure Description

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0021] Figure 1Cross-sectional view of the first embodiment of the constant pressure switch for urine bags;

[0022] Figure 2 Cross-sectional view of a second embodiment of a constant pressure switch for urine bags;

[0023] Figure 3 : Schematic diagram of the housing of the constant pressure switch for urine bags;

[0024] Figure 4 Cross-sectional view of the third embodiment of the constant pressure switch for urine bags;

[0025] Figure 5 : Schematic diagram of the drainage system. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0027] In the description of the solution, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Also, in the description of the solution, with the operator as a reference, the direction closer to the operator is the proximal end, and the direction farther from the operator is the distal end.

[0028] like Figures 1 to 4 As shown, this utility model discloses a constant pressure switch for a urine bag, including a housing 1. The housing 1 includes a main shell 109 with an input port 103 and an output port 104, a front cover 108, and a rear cover 110. The housing 1 has an inlet chamber 101 and an outlet chamber 102. The input port 103 is connected to the inlet chamber 101, and the output port 104 is connected to the outlet chamber 102. A movable sealing plate 2 is provided between the inlet chamber 101 and the outlet chamber 102. The inlet chamber 101 and the outlet chamber 102 are connected or isolated by the movement of the sealing plate 2. A spring is provided between the sealing plate 2 and the inner wall of the front cover 108 and / or the rear cover 110.

[0029] Specifically, the inlet chamber 101 and the outlet chamber 102 are connected via a connection port 105. A sealing plate 2 matching the connection port 105 is movably disposed inside the housing 1. In a preferred embodiment, a first spring 3 is disposed inside the outlet chamber 102. The two ends of the first spring 3 abut against the inner wall of the housing 1 and the center end face of the sealing plate 2, respectively. The elastic force of the first spring 3 provides the sealing plate 2 with a driving force to seal with the connection port 105. The input pressure of the inlet chamber 101 provides the sealing plate 2 with a driving force to separate from the connection port 105. The sealing plate 2 moves relative to the connection port 105 in the direction of the resultant force between the elastic force of the first spring 3 and the input pressure of the inlet chamber 101 to open or close the connection port 105. The maximum value of the elastic force of the first spring 3 is less than the maximum value of the input pressure.

[0030] In this design, a movable sealing plate 2 is used to selectively open or close the connection port 105. The inlet chamber 101 communicates with the bladder, and therefore the input pressure within the inlet chamber 101 is related to the pressure within the bladder. A first spring 3 provides pressure in the opposite direction to the input pressure, ensuring that the sealing plate 2 automatically releases only when the bladder reaches a certain pressure value. This trains or maintains the user's normal urination function, preventing extreme situations such as prolonged bladder urination or prolonged emptying. It maximizes the protection of the user's normal bladder function while achieving automatic opening and closing for urination, eliminating the need for medical personnel to periodically open or close the plate, thus reducing their workload. The maximum input pressure is associated with a safe threshold under bladder fullness. The maximum elasticity of the first spring 3 is less than the maximum input pressure, ensuring that the sealing plate 2 can always open for pressure release even under extreme bladder fullness, guaranteeing safe use and preventing long-term urination damage to the bladder and kidneys.

[0031] To ensure the stability of the first spring 3 during its extension and retraction, a first limiting groove 201 is provided at the center of the end face of the sealing plate 2 adjacent to the drainage chamber 102, and a second limiting groove 106 is provided on the inner wall of the housing 1. The two ends of the first spring 3 are respectively embedded in the first limiting groove 201 and the second limiting groove 106 to ensure its positional stability. In other feasible embodiments, other limiting structures can also be provided on the inner wall of the housing 1 and at the center end face of the sealing plate 2 to limit the movement direction of the first spring 3.

[0032] Furthermore, the constant pressure switch disclosed in this solution also has a second embodiment. The difference between the second embodiment and the first embodiment is that a second spring 4 is provided in the liquid inlet chamber 101. The two ends of the second spring 4 abut against the inner wall of the housing 1 and the center end face of the sealing plate 2, respectively, and the elastic force of the second spring 4 is not greater than that of the first spring 3. The provision of the second spring 4 can ensure that the two end faces of the sealing plate 2 are subjected to balanced forces, so that the sealing plate 2 maintains its stable up, down, left, and right positions during movement, thereby ensuring the alignment between the sealing plate 2 and the connection port 105. This allows the sealing plate 2 to close the connection port 105 through smooth displacement, avoiding the sealing plate 2 from shifting and causing the connection port 105 to fail to close.

[0033] A third limiting groove 202 is provided at the central end face of the sealing plate 2 adjacent to the liquid inlet chamber 101. A limiting protrusion 107 is provided on the inner wall of the housing 1. One end of the second spring 4 is embedded in the third limiting groove 202, and the other end is engaged with the limiting protrusion 107. In other feasible embodiments, the positions of the limiting protrusion 107 and the third limiting groove 202 can be interchanged.

[0034] The second spring 4 is arranged opposite to the first spring 3 to provide a force opposite to the elastic force of the first spring 3. Therefore, the arrangement of the second spring 4 can generate a force opposite to the elastic force of the first spring 3 together with the input pressure. The sealing plate 2 moves according to the direction of the resultant force of the input pressure, the elastic force of the second spring 4, and the elastic force of the first spring to avoid the problem that the first spring is difficult to adapt when the input pressure is too low. Furthermore, the constant pressure switch can be adapted to the first spring 3 by setting the second spring 4 with different elastic force values ​​to form different resultant pressure ranges to adapt to users with different urination pressure needs.

[0035] In another feasible embodiment, the housing 1 may also have a pull spring provided only between the sealing plate 2 and the inner wall of the front cover 108 to pull the sealing plate 2 in the opposite direction.

[0036] The first limiting groove 201, the second limiting groove 106 and / or the third limiting groove 202 constitute a spring limiting device to limit the first spring 3 and the second spring 4 respectively.

[0037] The constant voltage switch disclosed in this solution also has a third embodiment. In this third embodiment, the constant voltage switch does not have a spring limiting device; instead, a sealing plate guide device replaces the spring limiting device. Figure 4As shown, the sealing plate guiding device consists of guide posts 203 disposed on both sides of the sealing plate 2 and guide grooves 113 disposed on the inner walls of the front cover 108 and the rear cover 110. The guide posts 203 are slidably embedded in the guide grooves 113 to move along the guide grooves 113, thereby limiting the moving direction of the sealing plate 2.

[0038] like Figures 1-3 As shown, the housing 1 is composed of a front cover 108, a main shell 109, and a rear cover 110. The edges of the front cover 108 and the rear cover 110 are respectively provided with slots. The front and rear edges of the main shell 109 are respectively engaged in the slots, forming the housing 1. This assembly method facilitates installation and fabrication. A partition 111 is provided at the center of the main shell 109. The hollow cavity between the front cover 108 and the partition 111 is the liquid inlet chamber 101, and the hollow cavity between the rear cover 110 and the partition 111 is the liquid outlet chamber 102. The connection port 105 is located on the partition 111. The housing 1 is preferably teardrop-shaped to facilitate the flow of fluid from the liquid inlet chamber 101 to the liquid outlet chamber 102.

[0039] The input port 103 is located at the top of the main housing 109, and the output port 104 is located at the bottom of the main housing 109. This structural arrangement is more in line with practical use, allowing fluid to flow naturally from the input port 103 to the output port 104 by its own gravity.

[0040] Furthermore, the volume of the inlet chamber 101 is smaller than that of the outlet chamber 102 to increase the input pressure value, facilitating the placement of the first spring 3. A bent portion 112 is formed on the partition 111 near the input port 103. The inner contour of the bent portion 112 is adapted to the end of the sealing plate 2, allowing the end of the sealing plate 2 to move along the bent portion 112. The bent portion 112 reduces the volume of the inlet chamber 101 and guides the movement of the sealing plate 2, further ensuring the stability of the sealing plate 2's movement.

[0041] The diameter of the connection port 105 is smaller than that of the sealing plate 2, and a sealing ring 5 is provided on the connection port 105 or the sealing plate 2 to seal both. The sealing ring 5 can be fixed on the end face of the connection port 105 or on the end face of the sealing plate 2, and there is no limitation here.

[0042] Further such as Figure 4As shown, the housing corresponding to the drain chamber 102 is provided with an air inlet 114, which is covered by an air filter membrane 115 to balance the air pressure inside the drain chamber 102, facilitating the discharge of accumulated liquid from the drain chamber 102 and its downstream drain pipe. Preferably, the diameter of the air inlet 114 is no greater than 2.5 mm, and the pore size of the air filter membrane 115 is no greater than 5 micrometers. In other feasible embodiments of this solution, the air inlet 114 can be provided on the housing corresponding to the drain chamber 102.

[0043] Furthermore, such as Figure 5 As shown, this solution also discloses a drainage system, including an inlet catheter, an outlet catheter, a drainage bag, and a pressure-regulating switch for the urine bag as described above. The input port 103 of the pressure-regulating switch for the urine bag is connected to the inlet catheter, which can be connected to the bladder during use. The output port 104 of the pressure-regulating switch for the urine bag is connected to the outlet catheter, which is connected to the drainage bag to introduce urine into the drainage bag for storage. Of course, a drainage branch can also be provided between the inlet catheter and the outlet catheter.

[0044] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0045] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A constant pressure switch for a urine bag, characterized in that: The device includes a housing (1), which includes a main shell (109) having an input port (103) and an output port (104), a front cover (108) and a rear cover (110). The housing (1) is provided with an inlet chamber (101) and a drain chamber (102). The input port (103) is connected to the inlet chamber (101), and the output port (104) is connected to the drain chamber (102). A movable sealing plate (2) is provided between the inlet chamber (101) and the drain chamber (102). The inlet chamber (101) and the drain chamber (102) are connected or isolated by the movement of the sealing plate (2). A spring is provided between the sealing plate (2) and the inner wall of the front cover (108) and / or the rear cover (110).

2. The constant pressure switch for a urine bag according to claim 1, characterized in that: The constant pressure switch has a built-in spring limiting device, which is a first limiting groove (201) located at the center of the end face adjacent to the sealing plate (2) and the drain chamber (102), a second limiting groove (106) and / or a third limiting groove (202) located on the inner wall of the housing (1).

3. The constant pressure switch for urine bags according to claim 1, characterized in that: The constant pressure switch has a built-in sealing plate guide device, which consists of guide posts (203) on both sides of the sealing plate (2) and guide grooves (113) on the inner walls of the front cover (108) and the rear cover (110).

4. The constant pressure switch for a urine bag according to claim 1, characterized in that: The input port (103) is located at the top of the main shell (109), and the output port (104) is located at the bottom of the main shell (109).

5. The constant pressure switch for a urine bag according to claim 1, characterized in that: An air inlet (114) is provided on the housing corresponding to the drain chamber (102), and the air inlet (114) is covered by an air filter membrane (115).

6. The constant pressure switch for urine bags according to any one of claims 1-5, characterized in that: The front cover (108) and / or the main shell (109) and / or the rear cover (110) are provided with slots along their edges. The main shell (109) is provided with a partition (111) at its center. The hollow cavity between the front cover (108) and the partition (111) is the liquid inlet cavity (101). The hollow cavity between the rear cover (110) and the partition (111) is the liquid outlet cavity (102). The partition (111) is provided with a connection port (105) at its center.

7. The constant pressure switch for a urine bag according to claim 6, characterized in that: The volume of the inlet chamber (101) is smaller than that of the outlet chamber (102). A bend (112) is formed on the partition (111) near the input port (103). The inner contour of the bend (112) is adapted to the end of the sealing plate (2), so that the end of the sealing plate (2) moves along the bend (112).

8. The constant pressure switch for a urine bag according to claim 6, characterized in that: The diameter of the connection port (105) is smaller than that of the sealing plate (2), and a sealing ring (5) is provided on the connection port (105) or the sealing plate (2) to seal the connection between the two.

9. The constant pressure switch for a urine bag according to claim 5, characterized in that: The diameter of the air inlet (114) is no greater than 2.5 mm, and the pore size of the air filter membrane (115) is no greater than 5 micrometers.

10. A drainage system, characterized in that: It includes an input catheter, an output catheter, a drainage bag, and a constant pressure switch for a urine bag as described in any one of claims 1-9, wherein the input port (103) of the constant pressure switch for the urine bag is connected to the input catheter, the output port (104) of the constant pressure switch for the urine bag is connected to the output catheter, and the output catheter is connected to the drainage bag.

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