Adjustable constant pressure switch and drainage system

Abstract

The utility model discloses an adjustable constant pressure switch and drainage system, which comprises a shell and a pressure adjusting assembly, an input cavity and an output cavity are arranged in the shell, the input cavity and the output cavity are communicated through a connecting port, and the shell is provided with an input port and an output port; the pressure adjusting assembly comprises an adjusting knob, a first spring and a partition plate, the first spring can act on the inner end of the adjusting knob and the partition plate, the adjusting knob is arranged on the shell, the partition plate and the connecting port are oppositely arranged, and the adjusting knob adjusts control pressure applied to the partition plate by adjusting the stretching amount of the first spring. The partition plate is subjected to input pressure generated by the input cavity, the input pressure and the control pressure act on the partition plate in opposite directions, and the resultant force direction of the input pressure and the control pressure determines the moving direction of the partition plate relative to the connecting port so as to open or close the connecting port. According to the scheme, the pressure regulating assembly is arranged to flexibly meet the requirements of different users, automatic opening and closing are achieved, and normal urination and use safety are guaranteed.

Description

Technical Field

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

[0002] Currently, urethral drainage devices typically involve inserting a catheter into the bladder for drainage. For longer drainage periods, a drainage bag is connected to the external end of the catheter for fluid retention, and a clamping device is installed on the catheter to block the flow. Existing clamping devices are usually clips or Robert's clips. These devices only have a simple on / off function and require manual control, making them prone to forgetting to turn on or off due to human error. Forgetting to turn off the clamping device will cause the entire drainage system to stop, preventing the user from urinating and leading to bladder overdistension, which can seriously damage kidney function and cause medical accidents. Forgetting to turn off the clamping device will keep the entire drainage system open, preventing the user from storing urine normally and keeping the bladder in a continuously empty state. Over time, this can lead to loss of normal bladder tone, detrusor muscle weakness, weakened or absent reflex function, and ultimately, inability to urinate normally.

[0003] Therefore, how to control the drainage system used to drain urine in coordination with bladder emptying function, so as to help the bladder to urinate properly without damaging the normal function of the bladder, is an urgent problem to be solved. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an adjustable constant pressure switch and a diversion system.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] An adjustable constant pressure switch includes a housing and a pressure regulating assembly. The housing has an input chamber and an output chamber, which are connected by a connection port. The housing has an input port connected to the input chamber and an output port connected to the output chamber. The pressure regulating assembly includes an adjusting knob, a first spring, and a partition plate. The first spring acts on the inner end of the adjusting knob and the partition plate. The adjusting knob is located on the housing between the input port and the output port. The partition plate is positioned opposite to the connection port. The adjusting knob adjusts the extension and retraction of the first spring, thereby adjusting the control pressure applied to the partition plate. The partition plate is subjected to the input pressure generated when liquid flows from the input chamber. The input pressure and the control pressure act on the partition plate in opposite directions. The direction of the resultant pressure between the two determines the direction of movement of the partition plate relative to the connection port. When the partition plate moves away from the connection port, the connection port is opened; when the partition plate abuts against the connection port, the connection port is closed.

[0007] Preferably, the pressure regulating assembly further includes a second spring, which is coaxial with the first spring and located on both sides of the partition plate. The two ends of the second spring abut against the inner wall of the housing and the partition plate, respectively, to apply a spring force to the partition plate in the opposite direction to the spring force of the first spring. The control pressure is the resultant force of the spring force of the second spring and the spring force of the first spring.

[0008] Preferably, the pressure regulating assembly further includes a second spring, and the adjusting knob can be inserted into the output cavity. The first spring and the partition plate are both located in the output cavity, and the second spring is located in the input cavity. The adjusting knob increases the control pressure by compressing the first spring, and decreases the control pressure by relaxing the first spring.

[0009] Preferably, the housing is formed by a main body with an input port and an output port, and front and rear cover plates. The housing has a partition separating the input cavity and the output cavity, and the connection port is located on the partition.

[0010] Preferably, the outer diameter of the partition plate is larger than the connection port, and a sealing ring is provided on the end face of the partition plate or / and the connection port. When the partition plate is in contact with the partition, the sealing ring seals the connection port.

[0011] Preferably, the housing is provided with a screw hole for screwing the adjustment knob, and an axially retractable sealing sleeve is fixed to the inner end of the screw hole. The inner end of the adjustment knob and the end of the first spring respectively abut against the two end faces of the sealing sleeve; or the inner end face of the screw hole is provided with a second sealing ring that fits tightly against the inner end face of the adjustment knob to seal the screw hole; a limiting groove for the end of the first spring is provided on the inner end face of the sealing sleeve.

[0012] Preferably, the pressure regulating assembly further includes a second spring, and a limiting groove for the end of the first spring is provided on the inner end face of the adjusting knob. The partition plates each have a first limiting protrusion that abuts or engages with the end of the first spring. A limiting block that abuts or engages with the end of the second spring is provided on the inner wall of the housing, and a second limiting protrusion that abuts or engages with the end of the second spring is provided on the other side of the partition plate.

[0013] Preferably, the adjustment knob has an adjustment end that is exposed outside the housing. The housing is provided with a set of indicator marks distributed along the rotation trajectory of the adjustment end. The adjustment end can be used to set the control pressure of the adjustment knob and / or display the opening and closing status of the connection port according to the indicator marks.

[0014] Preferably, the input port is located at the top of the housing, and the output port is located at the bottom of the housing.

[0015] The drainage system includes an input catheter, an output catheter, a drainage bag, and an adjustable constant pressure switch as described above. The input port of the adjustable constant pressure switch is connected to the input catheter, and the output port of the adjustable constant pressure switch is connected to the drainage bag through the output catheter.

[0016] The beneficial effects of this utility model are mainly reflected in:

[0017] 1. The pressure on the partition plate can be flexibly adjusted by the pressure regulating component. The corresponding control pressure can be preset according to different patient needs to achieve constant pressure automatic opening and closing, which helps users maintain normal urination function and avoids damage to the user's bladder function. There is no need for manual real-time monitoring of the control switch, freeing up manpower. On the other hand, it can adapt to patients with various input pressure requirements to meet the needs of users with different physical conditions, maximizing the scope of use and improving the flexibility of use.

[0018] 2. A second spring is set to generate a spring force in the opposite direction to that of the first spring, so that the resultant force of the two forms the final control pressure. On the one hand, the second spring can ensure that the partition plate is fully opened when the first spring is far away from the connection port; on the other hand, it can provide a fixed pressure supplement to the input pressure, avoiding the inconvenience of adjustment caused by the input pressure being too low. This setting also makes the force on both sides of the partition plate more balanced, which makes it easier to ensure the adjustment accuracy and stability of the adjustment knob.

[0019] 3. An indicator is set on the shell, and the control pressure can be preset to achieve constant pressure drainage, which completely simulates the physiological urination process of the human body, maintains the normal contraction of the patient's bladder muscles or helps the patient restore the normal contraction function of the bladder, and plays a role in bladder function training and function recovery. Attached Figure Description

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

[0021] Figure 1 : Schematic diagram of an embodiment of this utility model;

[0022] Figure 2 : Partial structural schematic diagram of an embodiment of this utility model;

[0023] Figure 3 Cross-sectional view of an embodiment of this utility model;

[0024] Figure 4 : A cross-sectional view of another feasible embodiment of the present invention. Detailed Implementation

[0025] 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.

[0026] 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. They 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 this utility model. 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.

[0027] like Figures 1 to 4 As shown, this utility model discloses an adjustable constant pressure switch, including a housing 1 and a pressure regulating assembly. The housing 1 has an input cavity 101 and an output cavity 102, which are connected by a connection port 105. The housing 1 has an input port 103 connected to the input cavity 101 and an output port 104 connected to the output cavity 102. The pressure regulating assembly includes an adjusting knob 201, a first spring 202, and a partition plate 203. The two ends of 02 act on the inner end of the adjustment knob 201 and the partition plate 203 respectively. In this solution, the inner end of the adjustment knob 201 can be a recessed hole or groove, a flat end face or a rod-shaped extension end. The two ends of the first spring 202 preferably abut vertically against the end faces of the adjustment knob 201 and the partition plate 203. The first spring 202 can adopt any suitable form to maintain coaxial effective contact with the adjustment knob 201 and the partition plate 203, such as abutting, contacting, or movable locking. The adjustment knob 201 is mounted on the housing 1, specifically located on the housing 1 between the input port 103 and the output port 104. The inner end of the adjustment knob 201 can extend into the housing 1. The partition plate 203 is directly opposite the connection port 105. The adjustment knob 201 can be rotated to adjust the extension and retraction of the first spring 202, thereby adjusting the control pressure applied to the partition plate 203. Drainage fluid flows into the input cavity 102 during use. The input pressure generated when the drainage fluid flows into cavity 102 is applied to the partition plate 203. The input pressure and the control pressure act on the partition plate 203 in opposite directions. The final resultant force direction of the two pressures determines the direction of movement of the partition plate 203 relative to the connection port 105, thereby opening or closing the connection port 105. That is, the connection port 105 is opened when the partition plate 203 moves away from the connection port 105, and the connection port 105 is closed when the partition plate 203 abuts against the connection port 105.

[0028] In this solution, the input chamber 101 is connected to the bladder, so the input pressure is related to the pressure inside the bladder. The control pressure is adapted to the input pressure. The control pressure is the pressure value required for urination when the user's bladder is full, or the associated pressure value. It can be expressed using liquid pressure, such as water column height (cm water column). Since the bladder urination pressure value varies for different users and under different usage conditions, this solution uses the pressure regulating component to preset the required pressure value to flexibly adjust the control pressure on the partition plate 203, achieving constant pressure self-starting drainage. This helps the user maintain normal urination function and avoids damage to the user's bladder and kidney function. It also eliminates the need for real-time monitoring of the control switch, freeing up manpower. On the other hand, it can adapt to patients with various input pressures to meet the needs of users with different physical conditions, maximizing the scope of use and improving the flexibility of use.

[0029] Furthermore, the pressure regulating component also includes a second spring 204. The second spring 204 and the first spring 202 are coaxially opposite and located on both sides of the partition plate 203. The two ends of the second spring 204 abut against the inner wall of the housing 1 and the axis of the partition plate 203, respectively, to apply a spring force to the partition plate 203 in the opposite direction to the spring force of the first spring 202. The control pressure is the resultant force of the spring force of the second spring 204 and the spring force of the first spring 202. By setting the second spring 204 to form a spring force in the opposite direction to the first spring 202, the resultant force of the two forms the final control pressure. On the one hand, the second spring 204 can provide a fixed pressure supplement to the input pressure, avoiding the inconvenience of adjustment caused by excessively low input pressure, such as inability to fully open the plate. On the other hand, this arrangement also makes the forces on both sides of the partition plate 203 more balanced, which helps to ensure the adjustment accuracy and stability of the adjustment knob 201. To ensure safe use, the maximum value of the control pressure in this solution corresponds to the input pressure value associated with the safe threshold of the bladder full state. This ensures that even when the control pressure reaches its maximum, the bladder can still release pressure by urinating when it reaches its safe threshold, thus avoiding the inability to urinate due to excessive control pressure and ensuring user safety.

[0030] Preferably, the adjusting knob 201 can also be disposed within the output cavity 102. The first spring 202 and the partition plate 203 are both located within the output cavity 102, and the second spring 204 is located within the input cavity 101. The adjusting knob 201 increases the control pressure by compressing the first spring 202, and decreases the control pressure by releasing the first spring 202. The specific models and specifications of the first spring 202 and the second spring 204 are selected according to the required range of applied elastic force.

[0031] In other feasible embodiments, the positions of the first spring 202 and the second spring 204 can be interchanged. The adjustment knob 201 pulls the first spring 202 by rotating in the opposite direction to increase the control pressure. That is, the adjustment knob 201 is inserted into the input cavity 101, the first spring 202 is located in the input cavity 101, and the partition plate 203 and the second spring 204 are both located in the output cavity 102. The adjustment knob 201 reduces the control pressure by compressing the first spring 202, and increases the control pressure by releasing the first spring 202.

[0032] like Figure 3 As shown in the illustrated embodiment, the input port 103 is located at the top of the housing 1, and the output port 104 is coaxially opposite to it at the bottom of the housing 1. The input cavity 101 and the output cavity 102 are arranged front to back to meet the conventional direction of gravity and to match the positions of the input port 103 and the output port 104. In other feasible embodiments, the input cavity 101 and the output cavity 102 may also be arranged vertically opposite each other or diagonally at an inclined angle. Preferably, the housing 1 is teardrop-shaped to facilitate smooth drainage. In other feasible embodiments, the housing 1 may also have other suitable shapes, which are not limited here.

[0033] The housing 1 of the adjustable constant pressure switch is formed by a main body including an input port 103, an output port 104, and front and rear cover plates. A partition 106 separates the input cavity 101 and the output cavity 102. The connection port 105 is located on the partition 106. The adjustable constant pressure switch is provided with a guide device for the partition 203. Specifically, the guide device can be a guide groove 107 fixed to the axis surrounding the partition 106. The port of the guide groove 107 protrudes outward from the partition 106. The inner contour of the guide groove 107 matches the outer contour of the partition 203. The partition 203 is disposed within the guide groove 107 and moves along the groove wall of the guide groove 107. The guide device can ensure the stability of the movement of the partition 203. In another feasible embodiment, such as... Figure 4 As shown, guide posts 208 are respectively provided on both sides of the axial center area of ​​the partition plate 203. The two guide posts 208 are respectively placed in the first guide groove 1011 in the input cavity 101 and the second guide groove 2011 on the inner side of the adjusting knob 201. Furthermore, the outer diameter of the partition plate 203 is larger than that of the connection port 105, and a sealing ring 205 adapted to the connection port 105 is bonded or embedded on the end face of the partition plate 203 or / and the connection port 105. When the partition plate 203 is in contact with the partition plate 106, the sealing ring 205 seals the connection port 105.

[0034] The housing 1 is provided with a screw hole 108 that is screwed to the inner end of the adjusting knob 201. To ensure the sealing between the adjusting knob 201 and the housing 1, in a preferred embodiment, an axially expandable sealing sleeve 109 is fixed to the inner end of the screw hole 108 to seal the screw hole 108. The inner end of the adjusting knob 201 and the end of the first spring 202 respectively abut against the two end faces of the sealing sleeve 109. The sealing sleeve 109 is an axially expandable elastic sealing sleeve that seals the screw hole 108, thereby ensuring the sealing at the screw hole 108 without hindering the axial adjustment of the adjusting screw 201 to the first spring 202. In another feasible embodiment, the screw hole 108 may also be fitted with a second sealing ring that fits tightly against the inner end face of the adjusting knob 201 to seal the screw hole 108.

[0035] To ensure the stability of the first spring 202, a limiting groove 110 is provided on the inner end face of the sealing sleeve 109 or the inner end of the adjusting knob 201 to limit or embed the end of the first spring 202. The center of the end face of the partition plate 203 has a first limiting protrusion 206 that engages with or limits the end of the first spring 202. Furthermore, a limiting block 111 is provided on the inner wall of the housing 1 to engage with or abut against the end of the second spring 204, and a second limiting protrusion 207 is provided at the center of the other end face of the partition plate 203 to engage with or limit the end of the second spring 204. In this solution, the end-limiting structure of the first spring 202 and the second spring 204 is not limited to the illustrated embodiment. The limiting groove 110, the first limiting protrusion 206, the limiting block 111, etc., can all be substituted to form alternative solutions, and specific adjustments and selections can be made according to actual production needs.

[0036] like Figures 1-3As shown, the adjustment knob 201 has an adjustment end exposed outside the housing 1. A set of indicator marks distributed along the rotation trajectory of the adjustment end are provided on the housing 1. The adjustment end presets the control pressure and / or displays the opening / closing state of the connection port 105 through these indicator marks. One set of indicator marks includes, but is not limited to, an "on" mark, a "off" mark, a "zero point" mark, and a scale value representing the control pressure. The "on" and "off" marks correspond to the starting and ending points, or the starting and ending regions, of the adjustment knob 201, respectively, representing its maximum clockwise and counterclockwise rotation limits relative to the housing 1. The "on" mark corresponds to the state where the control pressure is at its minimum and the connection port 105 is just open; the "off" mark corresponds to the state where the control pressure reaches its maximum or maximum range and the connection port 105 is closed.

[0037] The "zero point" marker is the position where the input pressure is zero and the connection port 105 is just open or closed. A set of scale values ​​representing the control pressure value are distributed between the "zero point" marker and the "closed" marker to identify the automatic discharge conditions under different input pressures.

[0038] An indicator is provided on the housing 1. The adjustment knob 201 is rotated to a preset adjustable constant pressure switch state, facilitating user operation and ensuring adjustment accuracy. The adjustment knob 201 has several feasible embodiments. In the illustrated embodiment, the adjustment knob 201 has a T-shaped structure, with its head being an indicator rod perpendicular to its stem, and its end forming an arrow shape for indication. In other feasible embodiments, the adjustment knob 201 can be any easily rotated T-shaped structure, and the head can be any easily twisted structure, such as round, spherical, or triangular. The outer wall of the head can also be provided with anti-slip textures to improve friction. The head may also not have a pointed tip, or it may have lines or markings for indication.

[0039] Furthermore, this utility model also discloses a drainage system, including an input catheter, an output catheter, a drainage bag, and an adjustable constant pressure switch as described above. The input port 103 of the adjustable constant pressure switch is connected to the input catheter, which is used to connect to the bladder. The output port 104 of the adjustable constant pressure switch is connected to the drainage bag through the output catheter to introduce urine into the drainage bag for storage.

[0040] 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.

[0041] 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. An adjustable constant voltage switch, characterized by: The utility model relates to a pressure regulating device, including shell (1) and pressure regulating assembly, the shell (1) is equipped with input chamber (101) and output chamber (102) in, input chamber (101) and output chamber (102) are linked together through connecting port (105), the shell (1) is equipped with the input port (103) of communication with input chamber (101), the output port (104) of communication with output chamber (102), The pressure regulating assembly includes an adjusting knob (201), a first spring (202), and a partition plate (203). The first spring (202) can act on the inner end of the adjusting knob (201) and the partition plate (203). The adjusting knob (201) is arranged on the shell (1) between the input port (103) and the output port (104). The partition plate (203) is arranged opposite to the connecting port (105). The adjusting knob (201) adjusts the extension amount of the first spring (202), and then adjusts the control pressure applied to the partition plate (203). The partition plate (203) is subjected to the input pressure generated when the input chamber (101) flows liquid. The input pressure and the control pressure act on the partition plate (203) in opposite directions. The pressure resultant force direction between the two determines the moving direction of the partition plate (203) relative to the connecting port (105). When the partition plate (203) moves away from the connecting port (105), the connecting port (105) is opened. When the partition plate (203) abuts against the connecting port (105), the connecting port (105) is closed.

2. The adjustable constant voltage switch of claim 1, wherein: The pressure regulating assembly further includes a second spring (204). The second spring (204) and the first spring (202) are coaxial and opposite to each other and are respectively located on two sides of the partition plate (203). The two ends of the second spring (204) respectively abut against the inner wall of the shell (1) and the partition plate (203) to apply an elastic force opposite to the elastic force direction of the first spring (202) to the partition plate (203). The control pressure is the resultant force of the elastic force of the second spring (204) and the elastic force of the first spring (202).

3. The adjustable constant voltage switch of claim 1, wherein: The pressure regulating assembly further includes a second spring (204). The adjusting knob (201) can be arranged in the output chamber (102). The first spring (202) and the partition plate (203) are located in the output chamber (102). The second spring (204) is located in the input chamber (101). The adjusting knob (201) increases the control pressure by compressing the first spring (202). The adjusting knob (201) reduces the control pressure by relaxing the first spring (202).

4. The adjustable constant voltage switch of claim 1, wherein: The shell (1) is surrounded by a main body provided with an input port (103) and an output port (104), and front and rear cover plates. The shell (1) has a partition plate (106) separating the input chamber (101) and the output chamber (102). The connecting port (105) is located on the partition plate (106).

5. The adjustable constant voltage switch of claim 1, wherein: The outer diameter of the partition plate (203) is greater than the connecting port (105), and a sealing ring (205) is arranged on the end face adjacent to the partition plate (203) and / or the connecting port (105), when the partition plate (203) is attached to the partition plate (106), the sealing ring (205) seals the connecting port (105).

6. The adjustable constant voltage switch of claim 1, wherein: The shell (1) is provided with a threaded hole (108) screwed with the adjusting knob (201), the inner end of the threaded hole (108) is fixedly connected with an axially telescopic sealing sleeve (109), the inner end of the adjusting knob (201) and the end of the first spring (202) abut the two side end faces of the sealing sleeve (109) respectively; or the inner end face of the threaded hole (108) is provided with a second sealing ring tightly abutting with the inner end face of the adjusting knob (201) to seal the threaded hole (108); the inner side end face of the sealing sleeve (109) is provided with a limiting groove (110) for the end of the first spring (202).

7. The adjustable constant voltage switch of claim 1, wherein: The pressure regulating assembly further comprises a second spring (204), the inner side end face of the adjusting knob (201) is provided with a limiting groove (110) for the end of the first spring (202), the partition plate (203) has a first limiting protrusion (206) abutting or clamping with the end of the first spring (202) respectively; the inner wall of the shell (1) is provided with a limiting block (111) abutting or clamping with the end of the second spring (204), the other side of the partition plate (203) has a second limiting protrusion (207) abutting or clamping with the end of the second spring (204).

8. The adjustable constant voltage switch of any of claims 1-7, wherein: The adjusting knob (201) has an adjusting end exposed to the shell (1), the shell (1) is provided with a group of indication marks distributed along the rotation track of the adjusting end, the adjusting end can correspond to the indication marks to set the control pressure of the adjusting knob (201) and / or display the opening and closing state of the connecting port (105).

9. The adjustable constant voltage switch of any of claims 1-7, wherein: The input port (103) is arranged on the top of the shell (1), and the output port (104) is arranged on the bottom of the shell (1).

10. Drainage system, characterized in that: The adjustable constant pressure switch of any one of claims 1-9 is connected with the input conduit, the output conduit, the drainage bag and the adjustable constant pressure switch, the input port (103) of the adjustable constant pressure switch is in communication with the input conduit, and the output port (104) of the adjustable constant pressure switch is in communication with the drainage bag through the output conduit.

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