CN114366382A - Self-locking urethral valve - Google Patents

Abstract

The invention belongs to the field of medical instruments, and particularly relates to a self-locking urethral valve which comprises a valve body, a valve core, a driving assembly and a deformable bladder support, wherein the bladder support is used for supporting a bladder and is provided with a first cavity; the valve core is driven by the driving assembly to move towards a direction far away from the channel. The invention can self-adaptively adjust the locking force on the urethra according to the amount of urine in the bladder, thereby avoiding tissue damage caused by over-compression on the urethra or urine leakage caused by insufficient compression on the urethra.

Description

A self-locking urethral valve

technical field

The invention belongs to the field of medical devices, and more particularly, relates to a self-locking urethral valve.

Background technique

Urinary incontinence often occurs in women and the elderly, which can lead to complications such as sacrococcygeal dermatitis and pressure ulcers, seriously affecting the quality of life and physical and mental health of patients. The causes of urinary incontinence are urethral sphincter injury or neurological dysfunction, among which sphincter functional defect or trauma is the main reason.

For urinary incontinence caused by sphincter functional defect or trauma, drugs or traditional Chinese medicine conservative treatment, surgical treatment, nursing equipment, skin care, psychological care and other measures are often used clinically; however, conservative treatment is only suitable for mild urinary incontinence, surgical treatment It is easy to be limited by the age and gender of the patient, and it is easy to cause complications such as dysuria, bladder perforation, and vascular injury. Other nursing measures can only alleviate the consequences of urinary incontinence, but not the root cause.

Therefore, the urethral valve device that can control the opening and closing of the urethra autonomously is also used in clinical practice to replace the function of the sphincter to control the opening and closing between the bladder and the urethra and fundamentally inhibit the occurrence of urinary incontinence. However, most of the existing urethral valve devices only rely on external force such as magnetic force to lock the urethra, so that the external force for locking the urethra is generally a fixed value. When the urine in the bladder increases, the pressure of the urine on the urethral valve increases. The locking force cannot offset the increased pressure caused by the increase of urine in the bladder, and urine leakage is prone to occur. Therefore, the locking effect of such a technical solution is not good; and if a larger locking force is used at the beginning, it is easy to cause The transition of the urethra is closed, and the impact on the urethral tissue is too great.

SUMMARY OF THE INVENTION

The present invention provides a self-locking urethral valve in order to overcome at least one defect in the above-mentioned prior art, which can increase the locking force with the increase of urine in the bladder, and has a better locking effect.

In order to solve the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A self-locking urethral valve is provided, including a valve body, a valve core, a drive assembly and a deformable bladder support for supporting the bladder, the bladder support is provided with a first cavity, the valve body is provided with a second cavity, and the The two cavities are provided with a deformable valve membrane, the valve core is installed in the valve body and forms a channel for holding the urethra between the valve membrane and the valve membrane; it also includes a pipe connecting the first cavity and the second cavity, the first cavity The body, the second cavity and the pipeline are filled with incompressible working medium, and the driving component is connected with the valve core and drives the valve core to move away from the channel.

In this solution, the first cavity is communicated with the second cavity, and is filled with incompressible liquid working medium. When the urine in the bladder increases, the bladder support deforms, causing the volume of the first cavity to decrease, so that the liquid The working fluid moves to the second cavity, and then squeezes the valve membrane to make the pressing force on the urethra stronger, and further locks the urethra. It can change itself with the amount of urine in the bladder, which can more realistically simulate the feedback mechanism of the human sphincter, so that the urethral tissue is not excessively squeezed when there is little urine, and the urethra is locked when there is much urine, so as to achieve better performance. locking effect.

As a further improved structural form, the above-mentioned bladder support includes a base provided with a gap and a deformable bladder support membrane for abutting with the bladder, the bladder support membrane covers the gap on the base and surrounds the base with the base. a cavity.

As a further improved structural form, the above-mentioned valve body is also provided with a third cavity for accommodating the valve core, the valve core includes a body and a support flap arranged on the periphery of the body, the side of the support flap away from the body and the third cavity The inner side wall is fixedly connected, one side wall of the main body forms a channel with the valve membrane, and the driving component is connected with the main body and drives the main body to move in a direction perpendicular to the axis line of the channel.

As a further improved structural form, the valve core is a magnetic rubber structure, and the driving component is a magnet that can be magnetically connected to the valve core.

As another improved structural form, the above-mentioned valve core is a rubber structure, and the driving component includes a spring, a receiving coil, a transmitting coil and a signal generator. The signal generator is electrically connected to the transmitting coil, the receiving coil is electrically connected to the spring, and the receiving coil is electrically connected. Electromagnetically coupled to the transmitter coil.

As a further improved structural form, the above-mentioned driving assembly further includes a power amplifier electrically connected with the signal generator and the transmitting coil.

As a further improved structural form, the above-mentioned spring is made of shape memory alloy.

As a further improved structural form, the above-mentioned liquid working medium is water.

As a further improved structural form, the above-mentioned bladder support frame is also provided with a urethral orifice which penetrates through the base and the bladder support membrane and communicates with the bladder.

As a further improved structural form, the above-mentioned valve membrane is made of medical elastic material.

Compared with the prior art, the beneficial effects are:

On the one hand, the present invention can simulate the feedback mechanism of the sphincter, adjust the urethral locking force adaptively according to the amount of urine in the bladder, achieve a better locking effect on the urethra, prevent urine leakage, and at the same time avoid the excessive compression of the urethral tissue. Injury; on the other hand, the application of the urethral valve of the present invention does not require opening of the urethra or bladder, thereby avoiding tissue infection.

Description of drawings

Fig. 1 is the structural connection schematic diagram of the self-locking urethral valve of embodiment 1 of the present invention;

Fig. 2 is the initial closed state of the urethra when the self-locking urethral valve of the embodiment 1 of the present invention is used;

Fig. 3 is the urethral tight state when the self-locking urethral valve of embodiment 1 of the present invention is used;

Fig. 4 is the open state of the urethra when the self-locking urethral valve of the embodiment 1 of the present invention is used;

5 is a schematic diagram of the structural connection of the self-locking urethral valve in Embodiment 2 of the present invention.

Detailed ways

The accompanying drawings are for illustrative purposes only, and should not be construed as limiting the present invention; in order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable to the artisan that certain well-known structures and descriptions thereof may be omitted from the drawings. The positional relationships described in the drawings are only for exemplary illustration, and should not be construed as limiting the present invention.

The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms “upper”, “lower”, “left” and “right” The orientation or positional relationship indicated by "long" and "short" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, structure and operation in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation on this patent. The specific meanings of the above terms.

Below by specific embodiment, and in conjunction with accompanying drawing, the technical scheme of the present invention is further described in detail:

Example 1:

As shown in FIGS. 1 to 4, a self-locking urethral valve includes a valve body 1, a valve core 2, a driving assembly 3 and a deformable bladder support 4 for supporting the bladder 200. The bladder support 4 is provided with a first A cavity 41, the valve body 1 is provided with a second cavity 11, the second cavity 11 is provided with a deformable valve membrane 12, the valve core 2 is installed in the valve body 1 and is formed with the valve membrane 12 for clamping The channel 5 for holding the urethra 100; also includes a pipeline 6 connecting the first cavity 41 and the second cavity 11, the first cavity 41, the second cavity 11 and the pipeline 6 are filled with an incompressible liquid working medium to drive the assembly 3 is connected to the valve core 2 and drives the valve core 2 to move away from the channel 5 .

Wherein, the pipe 6 can be made of medical rubber material. Such pipe 6 is relatively soft and can be easily changed in shape, so as to be implanted in the human body, reduce the wound area and prevent the wound from being infected.

The valve membrane 12 in this embodiment is made of medical elastic material, the second cavity 11 is provided with a through hole, the valve membrane 12 is located in the through hole, and the outer edge of the valve membrane 12 is fixedly connected to the inner side wall of the through hole.

The bladder support 4 in this embodiment includes a base 42 provided with a gap and a deformable bladder support membrane 43 for abutting with the bladder 200 . The bladder support membrane 43 covers the gap of the base 42 and is connected to the base 42 . A first cavity 41 is formed. Among them, the base 42 can be made of medical non-metallic materials, so that it can be fixed on the pubic bone to effectively carry the bladder 200, while maintaining a certain physiological compatibility to avoid mechanical damage to internal organs; the bladder support membrane 43 It can be made of medical elastic material, and its outer periphery is fixed on the end face of the opening of the bladder support 4, so that when the bladder 200 support frame supports the bladder 200, the bladder support membrane 43 is located under the bladder 200 and directly bears the weight of the bladder 200. The amount of urine in the bladder 200 increases, and its weight increases, thereby squeezing the bladder support membrane 43, and the bladder support membrane 43 is compressed and deformed downward, so the volume of the first cavity 41 is reduced, and the working medium in the first cavity 41 is reduced. After being squeezed, it flows into the second cavity 11 of the valve body 1 through the pipeline 6. Since the second cavity 11 is also filled with the working medium in the initial state, the inflowing working medium squeezes the valve on the second cavity 11. The membrane 12 makes the valve membrane 12 further squeeze the urethra 100, so that the locking force on the urethra 100 can be adaptively changed according to the amount of urine in the bladder 200, which can better simulate the feedback mechanism of the human sphincter, and realize when the urine is less. Decreasing the locking force to avoid excessive squeezing of the urethra 100 tissue, and increasing the locking force to avoid leakage of urine when there is a lot of urine is of great clinical significance. It is worth noting that when there is no urine in the bladder 200 , the elastic force of the valve core 2 and the valve membrane 12 should just lock the urethra 100 . The material is selected and determined, and will not be described in detail here.

The valve body 1 in this embodiment is fixed on the pubic bone in the human body. The valve body 1 is further provided with a third cavity 13 for accommodating the valve core 2 . The valve core 2 includes a main body 21 and a support flap 22 arranged on the outer periphery of the main body 21 . , the side of the support flap 22 away from the body 21 is fixedly connected with the inner side wall of the third cavity 13, one side wall of the body 21 and the valve membrane 12 form a channel 5, and the side of the body 21 away from the valve membrane 12 is close to the human skin , the drive assembly 3 is connected with the main body 21 and drives the main body 21 to move along the direction perpendicular to the axis of the channel 5 . Specifically, the valve core 2 in this embodiment is a medical magnetic rubber structure, that is, a mixture of rubber and magnetic particles. The driving component 3 is a magnet that can be magnetically connected to the valve core 2, and the magnet is located outside the human body. Through the fixed connection between the support flap 22 and the inner wall of the third cavity 13, the body 21 can be restricted in the third cavity 13, and when the magnet is close to the valve core 2, since the valve core 2 is a magnetic rubber material, it has a certain The body 21 deforms and moves in the direction away from the valve membrane 12 under the action of the magnetic force of the magnet, so that the channel 5 formed between the body 21 and the valve membrane 12 becomes larger, that is, the urethra 100 can be opened to urinate. When the magnet is removed, the body 21 restores its shape under its own elastic force, and locks the urethra 100; in addition, through the cooperation of the valve core 2 of the magnetic rubber material and the external magnet, the self-recovery force of the valve core 2 and the valve membrane can be used. 12. Clamp the urethra 100, and then place the magnet close to the valve core 2 when urination is required, which can make the structure of the urethra 100 valve more compact, reduce its occupied volume, and make it easier to implant into the human body.

The liquid working medium in this embodiment is water. Since water is liquid, its volume is almost unchanged when subjected to pressure, but it has a certain fluidity. Therefore, when the first cavity 41 and the second cavity 11 and the pipeline 6 When the cavity is filled with water, after the volume of the first cavity 41 is reduced due to the deformation of the bladder support membrane 43 above, the water moves toward the second cavity 11, so that the valve membrane 12 on the second cavity 11 is deformed. The water flow drives the falling of the bladder 200 due to gravity to the valve membrane 12 to adjust the size of the locking force on the urethra 100. Its structure is relatively simple, the cost is low, and the physiological compatibility is good, and the driving source is reduced as much as possible. The self-adaptive adjustment of the locking force is realized under the condition of It is worth noting that water is used as the liquid working medium in this embodiment, which is only a reference implementation, and other types of liquid working medium may also be used in the specific implementation process, which is not limited here.

The bladder 200 support frame in this embodiment is also provided with a urethral orifice 44 that penetrates through the base 42 and the bladder support membrane 43 and communicates with the bladder 200. The urethra 100 can pass through the urethral orifice 44, so that the bladder 200 support frame can be connected to the bladder 200. Connect and fix.

The working process of this embodiment is as follows:

In the initial state, the channel 5 formed by the elastic force of the valve core 2 and the valve membrane 12 just clamps the urethra 100 (see FIG. 2 ) to close the urethra 100 ; when the human body functions, the urine in the bladder 200 increases, and the bladder 200 Sagging and squeezing the bladder support membrane 43, the volume of the first cavity 41 becomes smaller, the water in the first cavity 41 flows to the second cavity 11, and the water in the second cavity 11 increases to squeeze the valve membrane 12, the valve membrane 12 The deformation causes the channel 5 to become smaller, the locking force to the urethra 100 in the channel 5 can be increased, and the urethra is tightly closed (see Figure 3); when urination is required, when the external magnet is close to the valve of the urethra 100, the magnetic force of the magnet acts Then, the body 21 of the valve core 2 moves away from the channel 5, the channel 5 becomes larger, and the urethra 100 is opened (see Figure 4); after urination, the magnet is removed, the body 21 loses external force, and the elastic force of the body 21 itself The shape of the body 21 is restored, that is, the body 21 is moved in a direction close to the channel 5, so as to close the urethra 100 again.

Example 2:

As shown in FIG. 5, a second embodiment of a self-locking urethral valve includes a valve body 1, a valve core 2, a driving assembly 3, and a deformable bladder support 4 for supporting the bladder 200. The bladder support 4 is provided with There is a first cavity 41 , the valve body 1 is provided with a second cavity 11 , the second cavity 11 is provided with a deformable valve membrane 12 , the valve core 2 is installed in the valve body 1 and formed between the valve membrane 12 It is used to clamp the channel 5 of the urethra 100; it also includes a pipeline 6 connecting the first cavity 41 and the second cavity 11. The first cavity 41, the second cavity 11 and the pipeline 6 are filled with an incompressible working medium, which drives the The assembly 3 is connected with the valve core 2 and drives the valve core 2 to move away from the channel 5 .

The bladder support 4 in this embodiment includes a base 42 provided with a gap and a deformable bladder support membrane 43 for abutting with the bladder 200 . The bladder support membrane 43 covers the gap of the base 42 and is connected to the base 42 . A first cavity 41 is formed.

The valve body 1 in this embodiment is further provided with a third cavity 13 for accommodating the valve core 2. The valve core 2 includes a main body 21 and a support flap 22 disposed on the outer periphery of the main body 21. The side of the support flap 22 away from the main body 21 and The inner side wall of the third cavity 13 is fixedly connected, and one side wall of the body 21 and the valve membrane 12 form a channel 5 .

The valve core 2 in this embodiment is a rubber structure, and the driving component 3 includes a spring 31, a receiving coil 32, a transmitting coil 33 and a signal generator 34. The signal generator 34 is electrically connected to the transmitting coil 33, and the receiving coil 32 is electrically connected to the spring 31. Connection, the receiving coil 32 is electromagnetically coupled with the transmitting coil 33 , one end of the spring 31 is fixedly connected to the body 21 , and the other end is fixedly connected to the inner wall of the third cavity 13 away from the channel 5 . Among them, the spring 31 can be made of shape memory alloy such as nickel-titanium alloy. When the signal generator 34 sends out a signal, the transmitting coil 33 generates a magnetic field, and the receiving coil 32 is in the magnetic field of the transmitting coil 33, thereby generating a current due to the electromagnetic induction effect. It flows through the spring 31 to generate heat, and the spring 31 is heated to the temperature of the phase transition point and generates a contraction force, that is, the spring 31 contracts, and drives the body 21 to move away from the channel 5, thereby opening the urethra 100. When the signal generator 34 stops sending out After the signal, the temperature of the transmitting coil 33 decreases, the contraction force of the spring 31 decreases, that is, the spring 31 returns to its original state, the body 21 returns to its original position under the action of its own elastic force, and the urethra 100 is closed. In this way, the contraction force of the shape memory alloy is used to drive the movement of the body 21, which has a large driving force and a fast response, and the valve core 2 is made of rubber material, which can reduce the influence of the magnetic material in the body on the human blood. Of course, other types of driving structures are also used to drive the movement of the valve core 2 within the scope of this solution, which will not be described in detail here.

In order to amplify the signal power of the signal generator 34 , the driving component 3 in this embodiment further includes a power amplifier 35 that is electrically connected to the signal generator 34 and the transmitting coil 33 .

The working medium in this embodiment is water.

The bladder 200 support frame in this embodiment is further provided with a urethral orifice 44 which penetrates through the base 42 and the bladder support membrane 43 and communicates with the bladder 200 .

The valve membrane 12 in this embodiment is made of medical elastic material.

Example 3:

The only difference between this embodiment and Embodiment 1 or Embodiment 2 is that the working medium in this embodiment is physiological saline. The use of physiological saline can be closer to the water environment in the human body and avoid the accidental leakage of the liquid working medium causing damage to the human body.

The present invention is described with reference to the flowcharts or block diagrams of the methods, devices (systems), and computer program products of the embodiments of the present application, and it should be understood that each process or block in the flowcharts or block diagrams can be implemented by computer program instructions, and A combination of processes or blocks in a flowchart or block diagram. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. The self-locking urethral valve is characterized by comprising a valve body (1), a valve core (2), a driving assembly (3) and a deformable bladder support (4) for supporting a bladder, wherein the bladder support (4) is provided with a first cavity (41), the valve body (1) is provided with a second cavity (11), the second cavity (11) is provided with a deformable valve membrane (12), and the valve core (2) is arranged in the valve body (1) and forms a channel (5) for clamping the urethra with the valve membrane (12); the valve core is characterized by further comprising a pipeline (6) communicated with the first cavity (41) and the second cavity (11), liquid working media are filled in the first cavity (41), the second cavity (11) and the pipeline (6), and the driving assembly (3) is connected with the valve core (2) and drives the valve core (2) to move in the direction far away from the channel (5).

2. A self-locking urethral valve according to claim 1, characterised in that the bladder support (4) comprises a base (42) provided with a slit and a bladder support membrane (43) adapted to abut the bladder and to deform, the bladder support membrane (43) covering the slit of the base (42) and enclosing the first cavity (41) with the base (42).

3. The self-locking urethral valve according to claim 2, wherein the valve body (1) is further provided with a third cavity (13) for accommodating the valve core (2), the valve core (2) comprises a body (21) and a supporting flap (22) arranged on the periphery of the body (21), one side of the supporting flap (22) far away from the body (21) is fixedly connected with the inner side wall of the third cavity (13), one side wall of the body (21) and the valve membrane (12) form the channel (5), and the driving assembly (3) is connected with the body (21) and drives the body (21) to move in the direction perpendicular to the axial lead of the channel (5).

4. A self-locking urethral valve according to claim 3, characterised in that the valve cartridge (2) is of magnetic rubber construction and the drive member (3) is a magnet which is magnetically connectable to the valve cartridge (2).

5. A self-locking urethral valve according to claim 3, wherein the valve body (2) is of a rubber structure, the driving member (3) comprises a spring (31), a receiving coil (32), a transmitting coil (33) and a signal generator (34), the signal generator (34) is electrically connected to the transmitting coil (33), the receiving coil (32) is electrically connected to the spring (31), the receiving coil (32) is electromagnetically coupled to the transmitting coil (33), one end of the spring (31) is fixedly connected to the body (21), and the other end of the spring is fixedly connected to the inner side wall of the third cavity (13) far from the channel (5).

6. A self-locking urethral valve according to claim 5, characterised in that the drive assembly (3) further comprises a power amplifier (35) electrically connected to the signal generator (34) and the transmitting coil (33).

7. A self-locking urethral valve according to claim 5, characterised in that the spring (31) is made of a shape memory alloy.

8. A self-locking urethral valve as claimed in any one of claims 4 to 7, characterised in that the liquid working substance is water.

9. A self-locking urethral valve as claimed in claim 8, characterised in that the bladder support frame is further provided with a urethral orifice (44) extending through the base (42) and bladder support membrane (43) and communicating with the bladder.

10. A self-locking urethral valve according to claim 9, characterised in that the valve membrane (12) is made of a medical grade elastic material.

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