Bionic urinary drainage valve

Abstract

The application provides a bionic urinary drainage valve, which solves the technical problems that the existing urinary catheterization device cannot realize stable pressure control and high-cost drainage, and is provided with a left end cover and a right end cover, a connecting body is arranged between the left end cover and the right end cover, the connecting body comprises an elastic film matched with the left end cover and a flow guide matched with the elastic film, a containing cavity is arranged in the connecting body, a valve body matched with the connecting body is arranged in the containing cavity, a sealing ring is arranged between the edge of the valve body towards the right end cover and the flow guide, and the side of the valve body towards the left end cover is matched with the elastic film. The application can be widely applied in the technical field of medical devices.

Description

TECHNICAL FIELD

[0001] The present application belongs to the medical technical field, more specifically, it relates to a kind of bionic urinary drainage valve. BACKGROUND

[0002] Indwelling catheterization is commonly used for patients with urinary retention caused by various diseases, patients who cannot urinate due to surgery needs or long-term bedridden coma patients.

[0003] At present, most of the urine collection bags applied in indwelling catheterization on the market are opened and closed by nursing staff at regular intervals to regularly urinate, improper operation can easily cause urine backflow, leading to secondary infection of patients and leaving sequelae. Therefore, technical personnel increase a one-way valve in the urine collection bag to control the patient's self-urination process, however, this one-way valve can only realize single urination function, cannot stabilize and control pressure drainage, leading to the patient's inability to completely urinate, affecting the patient's self-physiological function; In addition, there is also an electric control bionic device, which combines electromagnetic valve, sensor and circuit to form an electric control bionic scheme, which can effectively urinate and reduce the occurrence of sequelae, avoiding the above problems, but the overall scheme cost is too high, difficult to popularize and apply.

[0004] Patent CN209033294U discloses a urinary tract drainage device and a urinary tract drainage device containing the same, which is composed of an upper cover, a driving element, a sealing ring, a compression spring and a lower cover. The upper cover and the lower cover are sealingly connected to each other. When the drainage device is in the initial state, the sealing ring and the upper cover abut to block the urine from flowing into the urine outlet. As the amount of urine increases, the pressure of the urine increases. When the pressure of the urine on the driving element is greater than the pre-tightening force of the compression spring, the driving element compresses the compression spring downward, and the sealing ring separates from the upper cover, in turn allowing the urine to flow out of the urine outlet. As the amount of urine decreases, the pressure of the urine on the driving element decreases until it is less than the pre-tightening force of the compression spring, the compression spring releases and the driving element moves upward under the action of the compression spring to make the sealing ring abut against the upper cover to block the urine from flowing into the urine outlet. Although this structure can realize the automatic control of the urinary tract drainage device based on the amount of urine in the patient's bladder, it still has the following problems:

[0005] When the urinary tract drainage device is used for the first time, the initial opening is fixed in volume, and the liquid needs to be discharged to remove the air in the cavity. The compression spring compresses the driving element to move downward, and the liquid pressure is equal to the reaction force of the air plus the pre-tightening force of the spring. The opening pressure at this time is greater than the ideal drainage pressure, causing the patient's bladder urine pressure to be greater than the normal urination pressure but still not urinating. Over time, it will aggravate the patient's condition and is not conducive to the patient's recovery.

[0006] In view of the above, it is a technical problem to be solved by those skilled in the art to design a bionic urinary drainage valve. SUMMARY

[0007] The present application provides a kind of bionic urinary drainage valve to solve the lack of above-mentioned background art, technical scheme provided in the present application is: provide a kind of bionic urinary drainage valve, it is equipped with left end cover and right end cover, the left end cover and the right end cover between being equipped with connecting body, the connecting body includes the elastic film that is matched with left end cover and the flow guide piece that is connected with the elastic film, the accommodating cavity is equipped in the connecting body, the valve body that is matched with connecting body is equipped in the accommodating cavity, the edge of the valve body towards right end cover side and flow guide piece between being equipped with sealing ring, the side of the valve body towards left end cover and elastic film are matched.

[0008] Preferably, the upper end of the connecting body is provided with a urine inlet communicated with the accommodating cavity, and the lower end of the right end cover is provided with a urine outlet.

[0009] Preferably, the valve body includes a drainage part and a guide part and a support part provided at both ends of the drainage part and perpendicular to the drainage part, respectively.

[0010] Preferably, the drainage part is provided with a first annular sealing groove matched with the sealing ring at the side edge close to the right end cover, and the flow guide piece is also provided with a second annular sealing groove matched with the sealing ring at the inside of the edge close to the right end cover.

[0011] Preferably, the flow guide piece is provided with a guide cylinder extending towards the right end cover, and the lower part of the guide cylinder and located on the flow guide piece is provided with a flow-through port.

[0012] Preferably, the support part and the guide part are integrally and directionally connected, and the left side of the support part is connected with the elastic film.

[0013] Preferably, the left end cover and the elastic film are provided with a first accommodating cavity therebetween.

[0014] Preferably, the left end cover and the elastic film are provided with an annular boss at the connection position.

[0015] Preferably, the right end cover and the flow guide piece are provided with a second accommodating cavity therebetween.

[0016] The present application has the following advantages:

[0017] (1) The bionic urinary drainage valve of the application is provided with a connecting body and a valve body matched with the connecting body accommodating cavity, the connecting body comprises an elastic film and a flow guide piece, a sealing ring is arranged between the edge of the valve body towards the right end cover side and the flow guide piece, for blocking or connecting the urine flow channel, and the valve body side towards the left end cover is matched with the elastic film. By changing the pressure in the accommodating cavity, the elastic film is caused to protrude to the left or reset, thereby driving the valve body to separate from or connect with the flow guide piece, to play a role of urine storage or flow, and to achieve the purpose of self-controlled pressure drainage. This kind of structure design avoids the risk of secondary infection of the patient due to untimely urination, reduces the labor intensity of medical staff, and is beneficial to the rehabilitation treatment of the patient.

[0018] (2) In the bionic urinary drainage valve of the application, the upper end of the connecting body is provided with a urine inlet communicated with the accommodating cavity, and the lower end of the right end cover is provided with a urine outlet. This kind of structure design, on the one hand, when the urine inlet and the urine outlet are in the blocking state, the air in the accommodating cavity does not need to be discharged, and the urine can be directly flowed into the accommodating cavity; on the other hand, when the urine inlet and the urine outlet are communicated, and the pressure in the accommodating cavity is constant, the flow speed of the urine is also constant, having a pressure maintaining effect, playing a role of stable urination, and accelerating the recovery time of the patient.

[0019] (3) In the bionic urinary drainage valve of the application, when the urine inlet and the urine outlet are in the blocking state, even if the urine flows from the urine outlet due to improper operation, the valve body has a tendency to open, and at the same time, the pressure in the accommodating cavity is still increasing, so the pressure in the accommodating cavity is always greater than the pressure in the second accommodating cavity, thereby avoiding the backflow of the urine and avoiding the secondary infection of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0021] Figure 1 It is a schematic diagram of the overall structure of the application;

[0022] Figure 2 It is a sectional view of the application;

[0023] Figure 3 It is a schematic diagram of the structure of the connecting piece of the application;

[0024] Figure 4 It is a schematic diagram of the structure of the valve body of the application.

[0025] Explanation of symbols in the drawings:

[0026] 1, left end cover; 2, connecting body; 3, urine inlet; 4, first annular sealing groove; 5, guide cylinder; 6, flow-through port; 7, first accommodating cavity; 8, second accommodating cavity; 9, right end cover; 10, urine outlet; 11, valve body; 12, second annular sealing groove; 13, sealing ring; 14, elastic rubber sheet; 15, annular boss; 16, accommodating cavity; 17, flow guide piece; 18, drainage portion; 19, guide portion; 20, support portion. DETAILED DESCRIPTION

[0027] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0028] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0029] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] The present application provides a bionic urinary drainage valve, such as Figures 1-3As shown, it is provided with a left end cover 1 and a right end cover 9, and a connecting body 2 is arranged between the left end cover 1 and the right end cover 9, the connecting body 2 comprises an elastic rubber sheet 14 connected with the left end cover 1 and a flow guide 17 connected with the elastic rubber sheet 14, the connecting body 2 is provided with a containing cavity 16, the containing cavity 16 is provided with a valve body 11 matched with the connecting body 2, a sealing ring 13 is arranged between the edge of the valve body 11 towards the right end cover 9 and the flow guide 17, for blocking or connecting the urine flow channel, and the valve body 11 towards the left end cover 1 is matched with the elastic rubber sheet 14. Through the change of the urine pressure in the containing cavity 16, the elastic rubber sheet 14 is urged to protrude to the left or reset, thereby driving the valve body 11 to separate from or connect with the flow guide 17, to play the role of urine storage or flow, and to achieve the purpose of self-controlled pressure drainage. The structure design avoids the risk of secondary infection of the patient due to the untimely urination, reduces the labor intensity of the medical staff, and is beneficial to the rehabilitation treatment of the patient.

[0032] In one embodiment, as shown in the drawings, the valve body 11 comprises a drainage part 18 and a guide part 19 and a support part 20 arranged at both ends of the drainage part 18 and perpendicular to the drainage part 18, and the drainage part 18, the guide part 19 and the support part 20 are integrally formed. Figure 4 The edge of the drainage part 18 close to the right end cover 9 is provided with a first annular sealing groove 4 matched with the sealing ring 13, and correspondingly, the edge inside of the flow guide 17 close to the right end cover 9 is also provided with a second annular sealing groove 12 matched with the sealing ring 13, and the first annular sealing groove 4 and the second annular sealing groove 12 clamp the sealing ring 13 between the valve body 11 and the flow guide 17. The sealing ring 13 is made of elastic material, preferably rubber or silicone material, further ensuring the good sealing effect between the valve body 11 and the connecting body 2.

[0033] In one embodiment, the upper end of the connecting body 2 is provided with a urine inlet 3 communicated with the containing cavity 16, and the urine flows into the containing cavity 16 vertically through the urine inlet 3. The lower end of the right end cover 9 is provided with a urine outlet 10 for discharging urine. Due to the structure design, when the urine inlet 3 and the urine outlet 10 are in the blocking state, the air in the containing cavity 16 does not need to be discharged, and the urine can directly flow into the containing cavity 16; on the other hand, when the urine inlet 3 and the urine outlet 10 are communicated, and the pressure in the containing cavity 16 is constant, the flow rate of the urine is also constant, which has the pressure maintaining effect and plays the role of stable urination, and accelerates the recovery time of the patient. In addition, when the urine inlet 3 and the urine outlet 10 are in the blocking state, even if the urine flows from the urine outlet 10 due to improper operation, the valve body 11 has a tendency to open, and at the same time, the pressure in the containing cavity 16 is still increasing, so the pressure in the containing cavity 16 is always greater than the pressure in the second containing cavity 8, which avoids the backflow of urine and avoids the secondary infection of the patient.

[0034] In one embodiment, the flow guide 17 extends to the right end cover 9 and is provided with a guide cylinder 5 for cooperating with the guide part 19 of the valve body 11. The lower part of the guide cylinder 5 is provided with a flow passage 6 on the flow guide 17, and the flow passage 6 is communicated with the urine outlet 10. The support part 20 is integrally connected with the guide part 19, and the left side of the support part 20 is connected with the elastic film 14. When the sealing ring 13 is in the clamping state of the first annular sealing groove 4 and the second annular sealing groove 12, the urine inlet 3 and the urine outlet 10 are blocked, and the urine flows into the containing cavity 16 through the urine inlet 3. At this time, the pressure of the urine in the containing cavity 16 is less than the pre-deformation pressure of the elastic film 14, and the valve body 11 is fixed. With the increase of the urine in the containing cavity 16, when the pressure of the urine is greater than the pre-deformation pressure of the elastic film 14, the elastic film 14 will protrude to the left and drive the valve body 11 to move to the left, and the guide part 19 will move along the guide cylinder 5, so that the sealing ring 13 will gradually separate from the second annular sealing groove 12. At this time, the urine inlet 3, the flow passage 6 and the urine outlet 10 are in communication, and the urine in the containing cavity 16 will be discharged through the flow passage 6 and the urine outlet 10.

[0035] In one embodiment, the first containing cavity 7 is arranged between the left end cover 1 and the elastic film 14, which provides a deformation space for the elastic film 14. The second containing cavity 8 is arranged between the right end cover 9 and the flow guide 17, which contains the guide cylinder 5, and the second containing cavity 8 is communicated with the urine outlet 10.

[0036] In one embodiment, in order to ensure the stability of the protrusion or recovery of the elastic film 14 under the change of the pressure of the urine, so as to drive the sealing ring 13 to clamp or separate from the second annular sealing groove 12, the annular boss 15 is arranged at the connection between the left end cover 1 and the elastic film 14.

[0037] The working principle of the present application is as follows:

[0038] When the valve is in the initial state, the sealing ring 13 is in contact with the second annular sealing groove 12, blocking the urine inlet 3 and the urine outlet 10, and urine enters the containing cavity 16 through the urine inlet 3. When the urine pressure is equal to the normal excretion pressure of the bladder, i.e. 15-40 cm water column, the pressure of the urine in the containing cavity 16 is equal to the pre-deformation pressure of the elastic film 14. When the pressure of the urine in the containing cavity 16 is greater than the pre-deformation pressure of the elastic film 14, the elastic film 14 protrudes to the left and drives the valve body 11 to move to the left, the sealing ring 13 is separated from the second annular sealing groove 12, and the urine inlet 3 and the urine outlet 10 are connected. The urine flows out of the urine outlet 10 through the urine inlet 3, the containing cavity 16 and the flow-through port 6 in sequence. As the urine flows out, the pressure of the urine in the containing cavity 16 on the valve body 11 gradually decreases. When the pressure of the urine in the containing cavity 16 is less than the deformation pressure of the elastic film 14, the elastic film 14 returns to the initial state, the valve body 11 moves to the right under the action of the elastic film 14, the sealing ring 13 is in contact with the second annular sealing groove 12, the flow-through port 6 is closed, and the urine inlet 3 and the urine outlet 10 are blocked.

[0039] In summary, first, the bionic urinary drainage valve comprises a connecting body 2 and a valve body 11 matched with the containing cavity of the connecting body 2, the connecting body 2 comprises an elastic film 14 and a flow guide 17, a sealing ring 13 is arranged between the edge of the valve body 11 towards the right end cover 9 and the flow guide 17, for blocking or connecting the urine flow-through channel, and the side of the valve body 11 towards the left end cover 1 is matched with the elastic film 14. By changing the pressure in the containing cavity 16, the elastic film 14 is protruded to the left or reset, thereby driving the valve body 11 to separate from or connect with the flow guide 17, achieving the functions of urine storage or flow-through, and realizing the purpose of self-controlled pressure drainage. The structure design avoids the risk of secondary infection of the patient due to untimely urination, reduces the labor intensity of medical staff, and is beneficial to the rehabilitation treatment of the patient.

[0040] Secondly, in the bionic urinary drainage valve, the upper end of the connecting body 2 is provided with a urine inlet 3 communicated with the containing cavity 16, and the lower end of the right end cover 9 is provided with a urine outlet 10. On the one hand, when the urine inlet 3 and the urine outlet 10 are in the blocking state, the air in the containing cavity 16 does not need to be discharged, and the urine can directly flow into the containing cavity 16. On the other hand, when the urine inlet 3 and the urine outlet 10 are connected and the pressure in the containing cavity 16 is constant, the flow rate of the urine is also constant, having a pressure maintaining effect, playing a role in stabilizing urination, and accelerating the recovery time of the patient.

[0041] Finally, in the bionic urinary drainage valve of the application, when the urine inlet 3 and the urine outlet 10 are in the blocking state, even if urine flows from the urine outlet 10 due to improper operation, the valve body 11 has a tendency to open, and at the same time, the pressure in the containing cavity 16 is still increasing, so the pressure in the containing cavity 16 is always greater than the pressure in the second containing cavity 8, avoiding urine backflow and secondary infection of the patient.

[0042] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A biomimetic urinary drainage valve provided with a left end cap and a right end cap, characterized in that: The connecting body is provided between the left end cover and the right end cover, and comprises an elastic rubber sheet connected with the left end cover and a flow guide connected with the elastic rubber sheet; the connecting body is internally provided with a containing cavity; the containing cavity is internally provided with a valve body matched with the connecting body; a sealing ring is arranged between the edge of the valve body towards the right end cover and the flow guide; the valve body towards the left end cover is matched with the elastic rubber sheet; The valve body comprises a flow guide part and a guide part and a support part arranged at both ends of the flow guide part and perpendicular to the flow guide part; The flow guide part is provided with a first annular sealing groove matched with the sealing ring at the edge of the right end cover; the flow guide is also provided with a second annular sealing groove matched with the sealing ring at the edge of the right end cover; The flow guide is provided with a guide cylinder extending towards the right end cover; the lower part of the guide cylinder is provided with a flow passage on the flow guide; The support part is integrally and directionally connected with the guide part; the left side of the support part is connected with the elastic rubber sheet.

2. The biomimetic urinary drainage valve according to claim 1, characterized in that: The upper end of the connecting body is provided with a urine inlet communicated with the containing cavity; the lower end of the right end cover is provided with a urine outlet.

3. The biomimetic urinary drainage valve according to claim 1, wherein: The left end cover and the elastic rubber sheet are provided with a first containing cavity.

4. The biomimetic urinary drainage valve according to claim 3, characterized in that: The left end cover is provided with an annular boss at the connecting position with the elastic rubber sheet.

5. The biomimetic urinary drainage valve of claim 1, wherein: The right end cover and the flow guide are provided with a second containing cavity.

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