Design method of switching device for drainage system

Abstract

The invention discloses a design method of a switch device for a drainage system, and the switch device configured in the drainage system comprises an input end and an output end, and comprises an on-off element. The opening and closing element has a first state enabling the input end and the output end to be connected and a second state enabling the input end and the output end to be separated, and the two sides of the opening and closing element are subjected to input pressure and control pressure respectively. The control valve is configured to respond to pressure intensity conversion between the input pressure and the control pressure to generate opening and closing actions so as to realize state switching; and meanwhile, the maximum control pressure value borne by the opening and closing element in the second state is set to be associated with the safety threshold value of the input pressure. And the switching device is provided with an'on ' / 'off' associated identifier which respectively corresponds to a first state / a second state under the control of the maximum pressure of the opening and closing element. The device can simulate the physiological urination process of the human body, and the functions of bladder functional exercise and functional recovery are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a design method for a switch device for a drainage system. Background Art

[0002] Clinically, many patients have difficulty urinating independently, such as patients with paraplegia and hemiplegia caused by cerebrovascular and spinal vascular diseases, patients with cystostomy, comatose patients, high-level paraplegia patients, etc. For these patients with urination difficulties, the use of urethral drainage devices has become a common means to solve the urination difficulties of the above patients.

[0003] Traditional drainage devices are connected to the outer end of a urethral catheter for drainage. The catheter continuously drains urine from the bladder, resulting in the inability to form normal bladder pressure in the bladder. The patient's detrusor muscle and internal bladder sphincter are in a state of disuse for a long time, and the urine control principle of low-pressure urine storage and low-pressure urination cannot be used to protect the entire urinary system. In addition, long-term use of a catheter with this structure will produce the following risks: 1. Continuous drainage by the catheter causes the patient's bladder to lack a full state for a long time, which can easily lead to adhesion of the bladder wall; 2. Continuous drainage by the catheter reduces the pressure gradient between the bladder and the outside world. In order to ensure smooth drainage, it is often necessary to increase the outer diameter and hardness of the catheter wall, etc., which causes the patient's urethral mucosa to be compressed and ischemic damage occurs; 3. Continuous drainage by the catheter causes adaptive changes in the bladder's neural receptors, which cannot sense the filling of urine in the bladder and complete the urination reflex, resulting in urine retention.

[0004] Therefore, in order to solve the above problems, the existing urethral drainage device is provided with a clamping device for controlling the opening and closing of the urinary catheter on the urinary catheter or on the drainage device. However, the clamping device needs to be manually adjusted. Due to the instability of urination time, it is difficult to simply open or close the urinary catheter in time through the clamping device in actual use. If it cannot be opened in time, it will cause the bladder to be overfilled and damage the bladder and kidney function. On the other hand, due to physical differences such as age and gender, the contraction pressure of the bladder of different patients is also quite different. A clamping device with only an opening and closing function cannot well meet the needs of different patients. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a design method for a switch device for a drainage system.

[0006] The purpose of the present invention is achieved through the following technical solutions: A method for designing a switch device for a drainage system, comprising the steps of The switch device configured in the drainage system includes an input end and an output end, and the switch device includes an opening and closing element, the opening and closing element has a first state that makes the input end and the output end conductive, and a second state that separates the input end and the output end, the first side of the opening and closing element is subjected to the input pressure in the input end, and the second side is subjected to the control pressure applied thereon, and the opening and closing element is configured to respond to the pressure strength conversion between the input pressure and the control pressure to perform an opening and closing action to realize the first state / the second state; The switch device is set to have an "on" / "off" associated mark, which corresponds to the first state of the opening and closing element / the second state under the maximum control pressure respectively; the maximum control pressure to which the opening and closing element is subjected in the second state is set to be associated with the safety threshold of the input pressure.

[0007] Preferably, when the switch device is in use, the input end is connected to the bladder, the output end is connected to the drainage bag, and the input pressure is associated with the bladder filling pressure.

[0008] Preferably, the switch device includes a shell, and a first chamber and a second chamber are formed on the left and right sides of the shell. The first chamber is connected to the input end, and the second chamber is connected to the output end. The opening and closing element is a seal that can conduct or seal the connection between the first chamber and the second chamber by changing its state.

[0009] Preferably, a gear mark consisting of a set of graduation values ​​is further provided between the “open” mark and the “close” mark, and the gear mark corresponds to the control pressure to which the opening and closing element is subjected.

[0010] Preferably, the switch device also includes an adjusting lever plugged or screwed to the housing, and a spring that can axially retract and exert a force on the opening and closing element is arranged in the second chamber. The adjusting lever can adjust the spring to apply the control pressure to the opening and closing element by pushing, pulling or rotating. At the same time, the adjusting lever correspondingly indicates the "open" mark / gear mark / "close" mark.

[0011] Preferably, the “on” mark is set to correspond to a limit position or limit area of ​​rotation of the adjustment lever relative to one side of the housing.

[0012] Preferably, when the opening and closing element realizes the second state and the control pressure applied to the opening and closing element is 0, the position indicated by the adjustment lever at this time is set as the "zero point" mark.

[0013] Preferably, the "zero point" mark is the starting point of the gear mark, and the "closed" mark is the end point of the gear mark, and the gear mark is distributed between the "zero point" mark and the "closed" mark along the rotation trajectory of the adjustment lever, and the graduation value represents the pressure value of the corresponding control pressure.

[0014] Preferably, the "closed" mark is set to correspond to the limit position or limit area of ​​rotation of the adjustment lever relative to the other side of the housing, and at this time, the control pressure exerted by the spring on the opening and closing element reaches the maximum.

[0015] The present invention also discloses in detail another design method of a switch device for a drainage system, comprising the steps of: A drainage system with a switch device is provided, the drainage system comprising a joint connected to a urinary catheter, a catheter and a drainage bag, and a switch device arranged on the catheter; the switch device comprises a housing, a first chamber and a second chamber located inside the housing, and a seal located at a connection port between the first chamber and the second chamber, one side of the seal is subjected to input pressure from a bladder when in use, the seal is associated with an adjustment lever for applying control pressure thereto, the seal is configured to move between a first position and a second position in response to a pressure intensity conversion between the input pressure and the control pressure, and selectively connect / disconnect the connection between the first chamber and the second chamber by moving; It is assumed that the switch device has an "on" mark, a gear mark and a "off" mark, the "on" mark corresponds to the conduction state between the first chamber and the second chamber, the gear mark indicates the opening condition of the first chamber and the second chamber under different control pressures, and the "off" mark indicates the disconnection state of the first chamber and the second chamber under the safety threshold control pressure of the input pressure, and the adjustment lever indicates "on", gear and "off" through positioning switching.

[0016] The beneficial effects of the present invention are mainly reflected in: 1. An opening and closing device is provided on the drainage system between the bladder and the drainage bag, and the state change of the opening and closing element is used to flexibly respond to the pressure intensity conversion between the associated input pressure of the bladder and the control pressure received by the opening and closing element, while ensuring that the filling pressure of the bladder in the closed state does not exceed the safety threshold of the bladder filling pressure, so as to achieve automatic urination decompression and eliminate the danger when the bladder is overfilled and endangers the human body, and realize the safety functional closing function of the drainage system, so as to avoid the patient's bladder being overfilled and causing damage due to misoperation, such as forgetting to close the catheter for a long time, and at the same time, there is no need for medical staff to keep a close eye on it all the time, thus freeing up manpower; 2. Set the "on" mark, gear mark, and "off" mark to clearly and unambiguously provide information prompts to medical staff, so that medical staff can use it and set the gear, perform subsequent operations, track or record according to the individual needs of patients; 3. Through the gear setting, the purpose of automatic urination at a constant pressure is achieved, so as to simulate the physiological urination process of the human body, maintain the normal contraction of the patient's bladder muscles or help the patient restore the normal contraction function of the bladder, and play a role in bladder function training and function recovery; 4. Set an adjustment lever associated with the display logo to facilitate operational adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The technical solution of the present invention is further described below in conjunction with the accompanying drawings: Figure 1 : Schematic diagram of the switch device; Figure 2 : Schematic diagram of the drainage system. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below in conjunction with the specific embodiments shown in the accompanying drawings. However, these embodiments are not limited to the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0019] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0020] like Figure 1 to Figure 2 As shown, the present invention discloses a design method of a switch device 100 for a drainage system. The switch device 100 configured in a seamless drainage system or a seamless disposable drainage system includes an input end and an output end. The switch device 100 includes an opening and closing element. The opening and closing element has a first state that makes the input end conductive to the output end, and a second state that separates the input end from the output end.

[0021] The first side of the opening and closing element is subjected to the input pressure in the input end, and the second side is subjected to the control pressure applied thereto. The opening and closing element is configured to respond to the pressure strength conversion between the input pressure and the control pressure to perform the opening and closing action to realize the first state / second state; the switch device 100 is set to have "open" and "close" associated identifiers, which correspond to the first state of the opening and closing element / the second state under the maximum control pressure respectively; the maximum control pressure value is set to be no greater than the safety threshold of the input pressure. Of course, the "open" and "close" associated identifiers can also be other styles, such as "open" / "close", "ON" / "OFF", etc.

[0022] In the present invention, the input end is connected to the bladder through the catheter 300, the joint, and the urinary catheter, and the output end is connected to the drainage bag 200 through the catheter 300. The drainage system of the present invention is provided with an opening and closing device, which flexibly responds to the pressure intensity conversion between the input pressure and the control pressure of the bladder through the state change of the opening and closing element, and at the same time ensures that the maximum control pressure is not greater than the safety threshold of the input pressure, thereby achieving automatic urination and decompression when the bladder is overfilled and endangers human health, eliminating the danger, achieving the functional closing performance of the drainage system, avoiding damage caused by overfilling of the patient's bladder, and eliminating the need for medical staff to keep a close eye on it all the time, freeing up manpower.

[0023] The input pressure in the present invention is associated with (approximately equal to) the bladder filling pressure, because in actual use scenarios, the input pressure may be greater than, equal to, or less than the bladder filling pressure, because it is related to the spatial position of the switch device and the drainage bag 200. The input pressure refers to the liquid pressure at the input end of the switch device 100, expressed by the height of the water column, and the safety threshold of the input pressure is set to the limit pressure or maximum safety pressure or associated pressure that the human bladder can withstand. The control pressure is the input pressure when the opening and closing element is just opened, that is, when the input pressure reaches or exceeds the control pressure, the opening and closing element changes from the second state to the first state, so that the purpose of automatic urination at a constant pressure is achieved by pre-setting the control pressure, and the setting of the safety threshold of the maximum control pressure associated with the input pressure can ensure that even if the bladder filling pressure reaches a pressure that is harmful to the human body in the closed state, the present technical solution will automatically drain the liquid and reduce the pressure, thereby achieving the purpose of safe closure of the switch device 100. At the same time, in actual use, through different gear settings, automatic urination is achieved after the bladder reaches the filling pressure of physiological urination, thereby simulating the physiological urination process of the human body, thereby helping to maintain the normal contraction of the patient's bladder muscles or helping the patient restore the normal contraction of the bladder, and playing a role in bladder function training and function recovery.

[0024] Specifically, the switch device 100 includes a housing 1, and the left and right sides of the housing 1 form a first chamber and a second chamber that are connected to each other. The first chamber is connected to the input end, and the second chamber is connected to the output end. The opening and closing element is a seal that can conduct or seal the connection between the first chamber and the second chamber by changing the state. The seal can be any structure that seals the connection between the first chamber and the second chamber, such as a sealing plate with a sealing ring, a sealing film layer, etc. The opening and closing actions of the opening and closing element include but are not limited to movement, opening and closing, and rotation. For example, a sealing plate that can move relative to the connection between the first chamber and the second chamber can seal or open the connection between the first chamber and the second chamber by moving, thereby realizing the conduction and disconnection of the first chamber and the second chamber.

[0025] In a preferred embodiment, the "open" mark corresponds to the first state achieved by the opening and closing element, and the "closed" mark corresponds to the second state achieved by the opening and closing element at the maximum control pressure. In another feasible embodiment, the "open" or "open" mark may also correspond to the second state achieved by the opening and closing element, and the "closed" or "closed" mark may also correspond to the first state achieved by the opening and closing element at the maximum control pressure.

[0026] Furthermore, the switch device 100 further comprises an adjusting lever 2 screwed to the housing 1, a spring which can be axially retracted and acts on the opening and closing element is arranged in the second chamber, the adjusting lever 2 acts on the other end of the spring and can adjust the amount of expansion and contraction of the spring by rotation, so as to apply control pressure to the opening and closing element, and the adjusting lever 2 indicates the "open" mark / gear mark / "close" mark. The rod of the adjusting lever 2 is screwed to the housing 1, and is moved relative to the housing 1 by rotation to squeeze or release the spring, change the amount of expansion and contraction of the spring, and then change the elastic force of the spring. The control pressure on the opening and closing element is the elastic force of the spring, and the adjusting lever 2 controls the pressure value of the control pressure by adjusting the amount of expansion and contraction of the spring.

[0027] Preferably, the outer end of the adjusting lever 2 is bent relative to the rod portion thereof, and has an indication function by rotating relative to the housing 1 as the rod portion of the adjusting lever 2 rotates. In other feasible embodiments, the adjusting lever 2 may also adopt other feasible moving modes, such as plugging. The adjusting lever 2 may act on the spring in any suitable manner and apply a controlled pressure to the spring in a feasible manner, such as squeezing, stretching, rotating, etc.

[0028] The "open" mark is set to correspond to the limit position or limit area of ​​the rotation of the adjustment lever 2 relative to one side of the housing 1; the "closed" mark is set to correspond to the limit position or limit area of ​​the rotation of the adjustment lever 2 relative to the other side of the housing 1. The outer end of the adjustment lever 2 rotates between the "open" mark and the "closed" mark. When the adjustment lever 2 indicates the "open" mark, the adjustment lever 2 releases the spring, and the spring's expansion and contraction amount is the minimum, and the control pressure applied to the opening and closing element is the minimum. At this time, the opening and closing element realizes the first state, so that the first chamber and the second chamber are connected. When the adjustment lever 2 indicates the "closed" mark, the adjustment lever 2 squeezes the spring until the spring contraction amount reaches the maximum, and the control pressure applied by the spring to the opening and closing element reaches the maximum. At this time, the opening and closing element realizes the second state under the maximum control pressure.

[0029] In this solution, an "open" mark, a gear mark, and a "closed" mark are set to clearly indicate the status of the opening and closing elements, to clearly display the conduction between the input and output ends, the constant pressure discharge, and the functional closed state, which is convenient for medical staff to identify, follow up on operations, and record. In order to adapt to different input pressures by adjusting different control pressures, a gear mark consisting of a group of graduation values ​​is also provided between the "open" mark and the "close" mark, and the gear mark corresponds to the control pressure to which the opening and closing element is subjected. Specifically, it is set that when the opening and closing element is converted to the second state at an instant and the input pressure is 0, the position indicated by the corresponding adjustment lever 2 at this time is set as the "zero point" mark. The "zero point" mark corresponds to the connection port between the first chamber and the second chamber that is just sealed or opened when the input pressure is 0. The "close" mark is the end point of the gear mark, and the gear mark is distributed between the "zero point" mark and the "close" mark along the rotation indication track of the adjustment lever 2, and the graduation value represents the pressure value of the corresponding control pressure, or the input pressure value corresponding to the start of drainage. The gear mark represents that the opening and closing element realizes the second state under different control pressures, wherein the unit of the graduation value is the pressure value corresponding to each 1 cm of water column, and the numerical value representing the pressure value can also be set at intervals on the housing 1.

[0030] The maximum control pressure of the present invention can be a pressure point or a pressure interval. The maximum control pressure in the closed state is set to a pressure value or an interval between 40 and 60 cm of water column, or is set according to clinical medical regulations or nursing operation guidelines. The following is a feasible embodiment of the design method of the switch device 100 for the drainage system: A drainage system having a switch device 100 is provided, the drainage system comprising a connector of a bladder connectable to a urinary catheter, a catheter 300 and a drainage bag 200 , and the switch device 100 is arranged on the connector catheter 300 .

[0031] The switch device 100 comprises a housing 1, a first chamber and a second chamber located inside the housing 1, and a seal located at a connection port between the first chamber and the second chamber, one side of the seal receiving input pressure from a bladder, and the other side of the seal receiving control pressure regulated and applied thereto by an adjustment lever 2. The seal is configured to move between a first position and a second position in response to a pressure strength conversion between the input pressure and the control pressure, and selectively connect / disconnect the connection between the first chamber and the second chamber by moving.

[0032] The housing 1 of the switch device 100 has an "on" mark, a gear mark and a "off" mark, wherein the "on" mark corresponds to the conductive state between the first chamber and the second chamber, and the "off" mark indicates a functional closure, that is, it can realize the function of closing the urine storage, and in case of an erroneous operation, such as forgetting to turn on the switch for a long time, when the bladder filling pressure approaches or reaches the input pressure value that is harmful to the human body, it can also realize automatic drainage and pressure relief to eliminate the danger.

[0033] The gear mark indicates the opening conditions of the first chamber and the second chamber under different control pressures, simulating human physiological urination, exercising the bladder and restoring bladder function. The head of the adjustment lever 2 indicates "open", gear and "close" through positioning switching, which can clearly provide information prompts to medical staff, facilitate medical staff to use it conveniently and set control pressure according to individual differences of patients and perform subsequent tracking operations or records.

[0034] It should be understood that although this specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation mode may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0035] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for designing a switch device for a drainage system, characterized in that: Included steps The switch device configured in the drainage system includes an input end and an output end, and the switch device includes an opening and closing element, the opening and closing element has a first state that makes the input end and the output end conductive, and a second state that separates the input end and the output end, the first side of the opening and closing element is subjected to the input pressure in the input end, and the second side is subjected to the control pressure applied thereon, and the opening and closing element is configured to respond to the pressure strength conversion between the input pressure and the control pressure to perform an opening and closing action to realize the first state / the second state; The switch device is set to have an "on" / "off" associated mark, which corresponds to the first state of the opening and closing element / the second state under the maximum control pressure respectively; the maximum control pressure to which the opening and closing element is subjected in the second state is set to be associated with the safety threshold of the input pressure.

2. The design method of the switch device for drainage system according to claim 1, characterized in that: When the switch device is in use, the input end is connected to the bladder, the output end is connected to the drainage bag, and the input pressure is associated with the bladder filling pressure.

3. The design method of the switch device for drainage system according to claim 2, characterized in that: The switch device includes a shell, and a first chamber and a second chamber are formed on the left and right sides of the shell. The first chamber is connected to the input end, and the second chamber is connected to the output end. The opening and closing element is a seal that can open or seal the connection between the first chamber and the second chamber by changing its state.

4. The design method of the switch device for drainage system according to claim 3, characterized in that: A gear mark consisting of a set of graduation values ​​is also arranged between the "open" mark and the "close" mark, and the gear mark corresponds to the control pressure to which the opening and closing element is subjected.

5. The design method of the switch device for drainage system according to claim 4, characterized in that: The switch device also includes an adjusting lever plugged or screwed to the shell, and a spring that can axially retract and exert a force on the opening and closing element is arranged in the second chamber. The adjusting lever can adjust the spring to apply the control pressure to the opening and closing element by pushing, pulling or rotating. At the same time, the adjusting lever correspondingly indicates the "open" mark / gear mark / "close" mark.

6. The design method of the switch device for drainage system according to claim 5, characterized in that: The "open" mark is set to correspond to the limit position or limit area of ​​rotation of the adjustment lever relative to one side of the housing.

7. The design method of the switch device for drainage system according to claim 5, characterized in that: When the opening and closing element realizes the second state and the control pressure applied to the opening and closing element is 0, the position indicated by the adjustment lever at this time is set as the "zero point" mark.

8. The design method of the switch device for drainage system according to claim 7, characterized in that: The "zero point" mark is the starting point of the gear mark, and the "closed" mark is the end point of the gear mark. The gear mark is distributed between the "zero point" mark and the "closed" mark along the rotation trajectory of the adjustment lever. The graduation value represents the pressure value of the corresponding control pressure, or the graduation value corresponds to the input pressure value when starting to discharge.

9. The design method of the switch device for drainage system according to claim 5, characterized in that: The "close" mark is set to correspond to the limit position or limit area of ​​the adjustment lever rotating relative to the other side of the housing, and at this time, the control pressure exerted by the spring on the opening and closing element reaches the maximum.

10. A method for designing a switch device for a drainage system, characterized in that: Included steps A drainage system with a switch device is provided, the drainage system comprising a joint connected to a urinary catheter, a catheter and a drainage bag, and a switch device arranged on the catheter; the switch device comprises a housing, a first chamber and a second chamber located inside the housing, and a seal located at a connection port between the first chamber and the second chamber, one side of the seal is subjected to input pressure from a bladder when in use, the seal is associated with an adjustment lever for applying control pressure thereto, the seal is configured to move between a first position and a second position in response to a pressure intensity conversion between the input pressure and the control pressure, and selectively connect / disconnect the connection between the first chamber and the second chamber by moving; It is assumed that the switch device has an "on" mark, a gear mark and a "off" mark, the "on" mark corresponds to the conduction state between the first chamber and the second chamber, the gear mark indicates the opening condition of the first chamber and the second chamber under different control pressures, and the "off" mark indicates the disconnection state of the first chamber and the second chamber under the safety threshold control pressure of the input pressure, and the adjustment lever indicates "on", gear and "off" through positioning switching.

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