FEMALE URINARY CATHETER AND ITS STRUCTURAL ELEMENT

Abstract

Title of the invention: FEMALE URINARY CATHETER AND ITS STRUCTURAL ELEMENT. A female urinary catheter comprising a main body through which a catheterization channel passes. An annular groove is formed on the inner wall of the main body, and an annular sealing gasket, located on the outer wall corresponding to said groove, ensures adhesion to the urethral wall while maintaining a compression space. A petal-shaped fixation element, mounted around the insertion end, unfolds to fit into the bladder orifice to limit slippage. At the drainage end, a plate fixation element is mounted around the main body, and a catheterization valve, located outside the body, controls the opening and closing of the channel to regulate urination. Figure for the abstract: Figure 6

Description

Title of the invention: FEMALE URINARY CATHETER AND ITS STRUCTURAL ELEMENT technical field

[0001] The present utility model relates to the field of medical technology, and more particularly to a female urinary catheter and its structural element. PREVIOUS STATE OF TECHNOLOGY

[0002] Female urinary catheters are widely used clinically, primarily for patients with urethral sphincter laxity or lesions of the urinary nervous system, allowing, via a device, the control of urine retention and drainage. Existing urinary catheters generally require the continuous wearing of a urine collection bag, which causes inconvenience to patients' daily lives; the unstable adhesion of the catheter to the urethral wall can cause urinary leakage; the short physiological structure of the female urethra makes fixation difficult, and the catheter can easily shift or slip.

[0003] Thus, the provision of a new female urinary catheter and its structural element, intended to be inserted into the female urethra to allow control of urine evacuation, in order to obtain a simple structure and easy handling, constitutes an urgent technical problem to be solved by persons competent in the field. CONTENTS OF THE UTILITY MODEL

[0004] To remedy the aforementioned problems, the present utility model aims to provide a female urinary catheter and its structural element, intended to solve at least one of the aforementioned technical problems.

[0005] In a first aspect, the present utility model provides a female urinary catheter, said female urinary catheter comprising:

[0006] a main body of the urinary catheter, said main body of the urinary catheter being traversed by a catheterization channel, the internal wall of the body of said main body of the urinary catheter having, in the circumferential direction, an annular groove;

[0007] a petal-shaped fixing element, said petal-shaped fixing element being arranged circularly around the insertion end of the main body of the urinary catheter in the circumferential direction;

[0008] a plate attachment element, said plate attachment element being mounted on the outlet end of the main body of the urinary catheter;

[0009] a tube body seal, said tube body seal being disposed on the external wall of the main body of the urinary catheter and corresponding to the position of the annular groove;

[0010] a catheterization valve, said catheterization valve being fixed on the outlet end of the main body of the urinary catheter, the plate attachment element being located between said catheterization valve and said main body of the urinary catheter, the catheterization valve is intended to control the opening and closing of the catheterization channel in the main body of the urinary catheter;

[0011] in which said tube body sealing joint and said petal-shaped fastening element are all made of elastic material.

[0012] Preferably, said plate fixation element has an elliptical structure, said elliptical structure having a through fixation orifice in the center, the internal diameter of which is adapted to the external diameter of the main body of the urinary catheter, said elliptical structure being mounted around the evacuation end of the main body of the urinary catheter via said fixation orifice.

[0013] Preferably, said petal-shaped fastening element comprises several sectorial blades, which are arranged at intervals along the circumferential direction on the insertion end of the main body of the urinary catheter.

[0014] Preferably, said tube body seal is an annular protruding structure, the external diameter of which is greater than the external diameter of the main body of the urinary catheter, and the size of which is adapted to the expansion of the female urethra.

[0015] Preferably, the inner wall of the insertion end of the main body of the urinary catheter has several strip grooves of predefined length, said strip grooves extending over a predefined length from the insertion end to the discharge end.

[0016] Preferably, in one aspect, the catheterization valve comprises:

[0017] an elastic valve body, one end of which is fixed to the evacuation end of the main body of the urinary catheter, said elastic valve body comprising a spherical cavity, the lateral wall of the elastic valve body comprising a hemispherical groove opening inwards, said spherical cavity and said hemispherical groove being communicating, said elastic valve body further comprising, in the longitudinal direction, an opening and closing channel communicating with the catheterization channel, said opening and closing channel passing through said spherical cavity;

[0018] a ball, said ball being disposed in a movable manner in said spherical cavity;

[0019] an elastic sheath, said elastic sheath being mounted on the outside of the body of elastic valve;

[0020] in which, the size of the spherical cavity is adapted to that of the ball, and the external diameter of the opening and closing channel is less than the external diameter of the spherical cavity.

[0021] Preferably, the ball is made from biosafety-compatible materials.

[0022] Preferably, the inner walls at both ends of the elastic sheath each have a circle of limiting protrusions, the outer walls at both ends of the elastic valve body each have a circle of limiting grooves, the limiting protrusions and the limiting grooves fitting into each other.

[0023] Preferably, the main body of the urinary catheter, the petal-shaped fixing element, the plate fixing element, the tube body sealing gasket and the elastic valve body are one piece and all made from biosafety-compatible elastic materials.

[0024] Preferably, in another aspect, the catheterization valve comprises:

[0025] a control valve body, said control valve body being fixed at one end to the discharge end of the main body of the urinary catheter, said control valve body comprising a spherical housing, the lateral wall of said control valve body extending outwards to form a spherical chamber, said spherical chamber being communicative with the spherical housing, said control valve body further comprising, in the longitudinal direction, a urine drainage channel communicating with said catheterization channel, said urine drainage channel passing through said spherical cavity;

[0026] a movable ball, said movable ball being disposed in a movable manner in said spherical housing;

[0027] in which the size of the spherical housing is adapted to said movable ball, the external diameter of the urine evacuation channel is less than the external diameter of the spherical housing.

[0028] In a second aspect, the present utility model provides a female urinary catheter, said female urinary catheter comprising:

[0029] a main body of the urinary catheter, said main body of the urinary catheter being traversed along its entire length by a catheterization channel;

[0030] an umbrella-shaped anti-withdrawal element, said umbrella-shaped anti-withdrawal element having a guide wire support end at the apex, a guide wire support cavity inside, the opening of said guide wire support cavity being fixed to the insertion end of the main body of the urinary catheter, said umbrella-shaped anti-withdrawal element having a urine inlet orifice on its lateral wall;

[0031] a plate attachment element, said plate attachment element being mounted around the outlet end of the main body of the urinary catheter;

[0032] a catheterization valve, said catheterization valve being fixed to the outlet end of the main body of the urinary catheter, the plate attachment element being located between said catheterization valve and said main body of the urinary catheter;

[0033] a traction wire, said traction wire being disposed independently of the main body of the urinary catheter, one end of said traction wire passing successively through said catheterization channel and said guide wire support cavity to come to rest on said guide wire support end;

[0034] wherein said umbrella-shaped anti-withdrawal element is made from elastic materials, said guide wire support cavity, said catheterization channel and said urine inlet orifice being communicating, the external diameter of said umbrella-shaped anti-withdrawal element in its natural state is greater than the external diameter of the main body of the urinary catheter, and the external diameter of said umbrella-shaped anti-withdrawal element in its deformed state is approximately equal to the external diameter of the main body of the urinary catheter.

[0035] Preferably, said plate fixation element has an elliptical structure, said elliptical structure having a through fixation orifice in the center, the internal diameter of which is adapted to the external diameter of the main body of the urinary catheter, said elliptical structure being mounted around the evacuation end of the main body of the urinary catheter via said fixation orifice;

[0036] said main body of the urinary catheter has, on its inner wall along the circumferential direction, an annular groove; said tube body seal is disposed on the outer wall of the main body of the urinary catheter corresponding with the position of said annular groove, said tube body seal being an annular protruding structure whose outer diameter is greater than the outer diameter of the main body of the urinary catheter, and whose size is adapted to the expansion of the female urethra.

[0037] Preferably, said catheterization valve comprises:

[0038] a control valve body, one end of said control valve body being fixed to the discharge end of said main body of the urinary catheter, said control valve body comprising a spherical housing, the lateral wall of said control valve body extending outwards to form a spherical chamber, said spherical chamber and said spherical housing being in communication, said control valve body being traversed lengthwise by a urine drainage channel in communication with said catheterization channel, said urine drainage channel passing through said spherical housing;

[0039] a movable ball, said movable ball being disposed in a movable manner in said spherical housing;

[0040] in which said spherical housing is in tight contact with said movable ball, and the external diameter of said urine evacuation is less than the external diameter of said spherical housing.

[0041] Preferably, said main body of the urinary catheter, said umbrella-shaped anti-retraction element, said plate fixing element, said tube body sealing gasket and said control valve body are made in one piece of elastic material conforming to biosafety standards.

[0042] In a third aspect, the present utility model also proposes a structural element for a female urinary catheter, said female urinary catheter comprising a catheter body provided with a catheterization channel. The structural element comprises: a catheterization valve, said catheterization valve being disposed at the discharge end of the catheter body; said structural element further comprises:

[0043] a petal-shaped fixing element, said petal-shaped fixing element being arranged around the insertion end of said main body of the urinary catheter, along the circumferential direction;

[0044] or,

[0045] an umbrella-shaped anti-retraction element, said umbrella-shaped anti-retraction element having a guide wire support end, said umbrella-shaped anti-retraction element comprising a guide wire support cavity, the open end of said guide wire support cavity being connected to the insertion end of said main body of the urinary catheter, a urine inlet orifice being provided on said umbrella-shaped anti-retraction element, said guide wire support cavity, said catheterization channel and said urine inlet orifice being in communication.

[0046] The beneficial effects of the present utility model compared to the prior art are as follows:

[0047] More specifically, the present utility model provides a female urinary catheter, comprising a catheter body, a petal-shaped attachment element, a plate attachment element, a tube body seal, and a catheterization valve. A catheterization channel runs longitudinally through the catheter body. On the inner wall of the catheter body, an annular groove is formed along the circumference of the body. The tube body seal and the petal-shaped attachment element are both made of elastic material. The tube body seal is disposed on the outer wall of the catheter body, corresponding to the position of the annular groove, such that the seal It adheres to the urethral wall to ensure a seal. The annular groove creates a compression space for the seal, thus preventing continuous pressure on the urethral wall. The petal-shaped retainer surrounds the insertion end of the catheter body circumferentially, locking it against the patient's bladder orifice and preventing the catheter from slipping. The plate retainer is mounted on the outlet end of the catheter body and hooks onto the urethral orifice, preventing the catheter from retracting into the bladder. The catheterization valve is attached to the outlet end of the catheter body, with the plate retainer positioned between the valve and the catheter body. The valve remains outside the patient's body and can be concealed between the patient's lips. Opening and closing the catheterization channel is controlled by manually manipulating the valve.This setup is simple and easy to use.

[0048] The above description is only an overview of the technical solution of this utility model. To better understand the technical means of this utility model, it can be implemented in accordance with the content of the description. Furthermore, to make the aforementioned and other objectives, characteristics, and advantages of the utility model clearer and easier to understand, specific embodiments of this utility model are presented below. DESCRIPTION OF ATTACHED DRAWINGS

[0049] To illustrate more clearly the embodiments of this specification or the technical solutions of the prior art, a brief description of the drawings necessary for the embodiment will be given below. It is evident that the drawings described below represent only some embodiments of this utility model. For an ordinary technician in the field, it is possible to obtain other drawings based on these drawings without creative effort.

[0050] Fig. 1 is a schematic view of the structure of the female urinary catheter during urination in embodiment 1 of the present application;

[0051] Fig. 2 is a schematic view of the structure of the female urinary catheter during voiding control in embodiment 1 of this application;

[0052] Fig. 3 is a perspective view of the structure of the female urinary catheter in embodiment 1 of this application;

[0053] Fig. 4 is a schematic view of the structure of another catheterization valve during micturition in embodiment 1 of the present application;

[0054] Fig. 5 is a schematic view of the structure of another catheterization valve during voiding control in embodiment 1 of the present application;

[0055] Fig. 6 is a schematic view of the combined structure of the female urinary catheter and guidewire in embodiment 2 of this application;

[0056] Fig. 7 is a schematic view of the deformation of the female urinary catheter during insertion in embodiment example 2 of this application;

[0057] Fig. 8 is a schematic view of the structure of the female urinary catheter in embodiment 2 of this application;

[0058] Fig. 9 is a cross-sectional view of the structure of the female urinary catheter in embodiment 2 of this application;

[0059] Fig. 10 is a schematic view of the structure of the traction wire in embodiment 2 of the present application.

[0060] Reference numbers in the figures:

[0061] 1, main body of the urinary catheter;

[0062] 11, catheterization channel;

[0063] 12, annular groove;

[0064] 13, groove in strip;

[0065] 2, petal-shaped fastening element;

[0066] 21, sector blade;

[0067] 3, plate fixing element;

[0068] 4, tube body sealing joint;

[0069] 5, catheterization valve;

[0070] 51, elastic valve body;

[0071] 511, spherical cavity;

[0072] 512, hemispherical groove;

[0073] 513, opening and closing channel;

[0074] 514, limiting groove;

[0075] 52, ball;

[0076] 53, elastic sheath;

[0077] 531, limiting projection;

[0078] 61, control valve body;

[0079] 611, spherical housing;

[0080] 612, spherical chamber;

[0081] 613, urine drainage channel;

[0082] 62, movable ball;

[0083] 7, umbrella-shaped anti-withdrawal element;

[0084] 71, guide wire support end;

[0085] 72, guide wire support cavity;

[0086] 73, urine inlet orifice;

[0087] 8, traction wire. SPECIFIC IMPLEMENTATION METHODS

[0088] In what follows, the technical solutions described in this document will be presented clearly and fully with reference to the figures of the embodiment examples in this document. It is understood that the embodiment examples described represent only a portion of the embodiment examples in this document, and not all of them. All other variants or embodiment examples obtained by a technician in the field based on the embodiment examples described in this document also fall within the scope of protection of this utility model. The terms "and / or" used in this embodiment indicate conjunction or disjunction, respectively. In other words, "A and / or B" mentioned in the embodiment examples in this document means the following three cases: A and B, A or B; that is: only A without B, only B without A, or A with B.

[0089] Furthermore, in the embodiment examples in this document, when a component is considered to be "connected" to another component, this may mean a direct connection to the other component or the possible existence of an intermediate component. When a component is considered to be "arranged on" another component, this may mean a direct arrangement on the other component or the possible existence of an intermediate component.

[0090] The embodiments of this utility model will be illustrated below by means of concrete examples. A technician in the field will be able to easily understand, from the information disclosed in this document, other advantages and effects of this utility model. This utility model can also be implemented or applied according to other different specific embodiments, and the various details described herein can be modified or adapted according to different points of view and applications, without deviating from the spirit of this utility model.

[0091] Example of implementation 1

[0092] Please refer to Figures 1 to 3. More specifically, in the embodiment of the female urinary catheter, the present utility model provides a female urinary catheter for insertion into the female urethra to achieve controlled urination. The female urinary catheter comprises a urinary catheter main body 1, a petal-shaped fixation element 2, a plate fixation element 3, a tube body seal 4, and a catheterization valve 5. A catheterization channel 11 is arranged transversely within the main body. of urinary catheter 1; an annular groove 12 is formed on the inner wall of the tube body of the main urinary catheter body 1, along the circumferential direction of the main urinary catheter body 1; the petal-shaped fixing element 2 surrounds the main urinary catheter body 1 along its circumferential direction and is fixed to the insertion end of the main urinary catheter body 1; the plate fixing element 3 is mounted by snap-fitting to the urine outlet end of the main urinary catheter body 1; the tube body seal 4 is disposed on the outer wall of the main urinary catheter body 1 and corresponds in position to the annular groove 12; the catheterization valve 5 is fixed to the urine outlet end of the main urinary catheter body 1;The plate-type fixing element 3 is disposed between the catheterization valve 5 and the main urinary catheter body 1; the catheterization valve 5 is used to control the opening and closing of the catheterization channel 11 inside the main urinary catheter body 1; wherein the tube body seal 4 and the petal-shaped fixing element 2 are both made from an elastic material.

[0093] More specifically, the example embodiment of the present utility model provides a female urinary catheter comprising a urinary catheter main body 1, a petal-shaped fixation element 2, a plate fixation element 3, a tube body seal 4, and a catheterization valve 5. A catheterization channel 11 is arranged transversely inside the urinary catheter main body 1. An annular groove 12 is formed on the inner wall of the tube body of the urinary catheter main body 1, along the circumferential direction of the urinary catheter main body 1. The tube body seal 4 and the petal-shaped fixation element 2 are both made from an elastic material, in order to allow their retraction under the effect of an external force, thus facilitating their insertion into the female urethra.The tube body seal 4 is positioned on the outer wall of the main urinary catheter body 1 and corresponds to the annular groove 12, so that the tube body seal 4 adheres to the urethral wall to provide a seal. The presence of the annular groove 12 also provides the tube body seal 4 with a compression space, thus preventing the tube body seal 4 from exerting prolonged pressure that could cause damage to the urethral wall. The petal-shaped retaining element 2 surrounds the main urinary catheter body 1 along its circumferential direction and is fixed to the insertion end of the main urinary catheter body 1, so that it fits into the patient's bladder opening via the petal-shaped retaining element 2, thereby preventing the catheter from [missing information]. slide outwards. The plate attachment element 3 is fitted onto the urine outlet end of the main urinary catheter body 1, so that the plate attachment element 3 hooks onto the urethral orifice and prevents the catheter from retracting into the bladder. The catheterization valve 5 is attached to the urine outlet end of the main urinary catheter body 1. The plate attachment element 3 is positioned between the catheterization valve 5 and the main urinary catheter body 1. The catheterization valve 5 remains outside the patient's body and can be concealed between the woman's vulvar lips; It allows, by manual control, the opening and closing of the catheterization channel 11 inside the main body of the urinary catheter 1. The present utility model thus presents a simple structure and easy handling.

[0094] The female urinary catheter of this application can be compressed and loaded into a peelable sheath. Therefore, the tube body seal 4 and the petal-shaped securing element 2 of this utility model must both be designed as elastic structures so that they can be compressed and inserted into the peelable sheath. During use, the peelable sheath is inserted through the urethral opening to the bladder opening, and then the urinary catheter is advanced using a push rod. Simultaneously, the peelable sheath is torn and withdrawn, allowing the petal-shaped securing element 2 to deploy at the bladder opening. After appropriate positioning, the sheath is further withdrawn until the securing element is anchored to the urethral opening.In this way, the position of the urinary catheter is jointly fixed by the petal-shaped fixing element 2 and the plate fixing element 3.

[0095] In one possible embodiment, the plate attachment element 3 can be configured as an elliptical structure, the central portion of which is traversed by a fixation orifice. The inner diameter of this fixation orifice is adapted to the outer diameter of the main body of the urinary catheter 1, and said elliptical structure is threaded onto the periphery of the urine outlet end of the main body of the urinary catheter 1 by means of the fixation orifice. Thus, the elliptical structure snaps into place at the urethral orifice, preventing the catheter from retracting inward and slipping into the bladder. Adopting an elliptical structure reduces the width on both sides of the plate attachment element 3, so as to allow discreet insertion of the plate attachment element 3 between the vulvar lips, thereby reducing the pressure exerted on them.Furthermore, the elongated shape of the elliptical structure adapts better to the female anatomical morphology, can be covered by surrounding tissues, reduces the sensation of a foreign body, and ensures stable axial positioning, preventing any involuntary rotation.

[0096] In one possible embodiment, the petal-shaped fixing element 2 comprises several sector blades 21, several sector blades 21 are arranged at regular intervals around the circumference of the main body of the urinary catheter 1 at the end of the insertion end of the main body of the urinary catheter 1.

[0097] In addition, the inner wall of the insertion end of the main body of the urinary catheter 1 has several strip grooves 13 of a predetermined length, several strip grooves 13 extending from the insertion end to the urine outlet end over a predetermined distance.

[0098] More specifically, by configuring the petal-shaped fixation element 2 to include several sectorial blades 21, several sectorial blades 21 are spaced apart, creating gaps between two sectorial blades 21, which allows the assembly to fold under the effect of an external force, thus facilitating insertion into the female urethra. Under the effect of an external force, the petal-shaped fixation element 2 is in a contracted state, the diameter of which is smaller than that of the urethra; in its natural state, it is in an extended state, the diameter of which is larger than that of the urethra and the bladder opening.By incorporating several predetermined-length grooves 13 on the inner wall of the insertion end of the main body of the urinary catheter 1, it is possible to facilitate the contraction of the petal-shaped fixation element 2; this predetermined length is significantly less than the total length of the main body of the urinary catheter 1. These grooves allow the petals to be easily folded and overlapped during insertion, providing them with sufficient deformation space. Furthermore, the width of the grooves allows for adjustment of the bonding force between the petals and the main body, thus enabling the adjustment of the fixation force of the petals within the patient's body.

[0099] In one possible embodiment, the sealing joint of the tube body 4 is configured in the form of a raised annular structure, the outside diameter of which is greater than that of the main body of the urinary catheter 1. The dimensions of this raised annular structure are adapted to the dilation of the female urethra, so as to closely fit the urethral wall and ensure an effective seal, thus preventing any leakage of urine.

[0100] In one possible embodiment, the catheterization valve 5 comprises an elastic valve body 51, a ball 52, and an elastic sheath 53. One end of the elastic valve body 51 is attached to the urine outlet end of the main body of the urinary catheter 1. Inside the elastic valve body 51 is a spherical cavity 511; the lateral wall of the elastic valve body 51 has an inwardly facing hemispherical groove 512. 512 communicates with the spherical cavity 511. The elastic valve body 51 is further traversed longitudinally by an opening and closing channel 513; the opening and closing channel 513 communicates with the catheterization channel 11 and passes through the spherical cavity 511. The ball 52 is movably mounted inside the spherical cavity 511. The elastic sheath 53 is threaded around the elastic valve body 51. The size of the spherical cavity 511 is adapted to that of the ball 52, and the outside diameter of the opening and closing channel 513 is smaller than that of the spherical cavity 511.

[0101] More specifically, when both sides of the elastic valve body 51 or the opposite sides of the hemispherical groove 512 are subjected to extrusion pressure, the ball 52 enters the position of the hemispherical groove 512 from the spherical cavity 511, while simultaneously compressing and lifting the elastic sleeve 53; at the same time, the opening and closing channel 513 inside the elastic valve body 51 opens, enabling the urination function. When urination is complete, by compressing the protruding portion of the elastic sleeve 53, the ball 52 is pushed back into the spherical cavity 511 of the elastic valve body 51; the ball 52 then presses against the lateral wall of the spherical cavity 511, obstructing and closing the opening and closing channel 513, thus achieving a urination control effect.

[0102] In one possible embodiment, the inner walls at both ends of the elastic sleeve 53 are provided, along the circumferential direction of the elastic sleeve 53, with a limiting bead 531; the outer walls at both ends of the elastic valve body 51 are provided, along the circumferential direction, with a limiting groove 514. The limiting bead 531 fits into the limiting groove 514. The elastic sleeve 53 is thus limited by the fit between the limiting bead 531 and the limiting groove 514, in order to prevent any displacement or detachment of the elastic sleeve 53 when the ball 52 is pushed from the spherical cavity 511 into the hemispherical groove 512, which would cause deformation of the elastic sleeve 53.

[0103] In one possible embodiment, the surface of the ball 52 is smooth and can be made from biosafety-compliant materials, such as polytetrafluoroethylene, quartz glass, polyethylene or stainless steel; the body of the ball can be made of silicone, natural rubber, TPU or TPE, in order to ensure safety while reducing the weight of the ball 52, thus improving user comfort.

[0104] In one possible embodiment, the catheter body 1, the petal-shaped fixing element 2, the plate fixing element 3, the body sealing ring Tube 4 and the elastic valve body 51 are formed in one piece and all made from a biocompatible elastic material, more specifically silicone, which simplifies the overall structure while improving user comfort.

[0105] As an alternative, the present application provides another structural design of the catheterization valve, as illustrated in Figures 4 and 5. The catheterization valve comprises a control body 61 and a movable ball 62. One end of the control body 61 is fixed to the discharge end of the catheter body 1. The control body 61 has a spherical housing 611, and the lateral wall of the control body 61 extends outward to form a spherical cavity 612, the spherical cavity 612 communicating with the spherical housing 611. The control body 61 further has, in the longitudinal direction, a drain channel 613 communicating with the catheterization channel 11, the drain channel 613 passing through the spherical housing 611. The movable ball 62 is movably arranged inside the spherical housing 611.The spherical housing 611 is dimensioned to suit the movable ball 62, and the outside diameter of the drain channel 613 is smaller than that of the spherical housing 611.

[0106] More specifically, when the spherical cavity 612 of the control body 61 is subjected to pressure on its opposite face, the movable ball 62 moves from the spherical housing 611 to the spherical cavity 612, thus opening the drainage channel 613 of the control body 61 to allow the flow of urine, as illustrated in [Fig. 5]. Once urination is complete, the movable ball 62, located in the spherical cavity 612, is compressed, so as to push the movable ball 62 back into the spherical housing 611 of the control body 61. The ball 62 adheres to the wall of the spherical housing 611 and blocks the intermediate drainage channel 613, thus ensuring the urinary control function, as illustrated in [Fig. 4].

[0107] In which the catheter body 1, the petal-shaped fixing element 2, the plate fixing element 3, the tube body sealing ring 4 and the control body 61 are formed in one piece and made of biocompatible elastic material, more specifically silicone, which simplifies the overall structure while improving user comfort.

[0108] Example of implementation 2

[0109] The present embodiment also provides a female urinary catheter, as illustrated in Figures 6 to 10. This female urinary catheter comprises: a main body of the urinary catheter 1, an umbrella-shaped anti-withdrawal element 7, a plate fixation element 3, a catheterization valve, and a traction wire 8. The main body of the urinary catheter 1 is traversed lengthwise by a catheterization channel 11. The upper end of the umbrella-shaped anti-withdrawal elementThe umbrella-shaped element 7 has a support end for the guide wire 71. Inside the umbrella-shaped anti-retraction element 7 is a support cavity for the guide wire 72; the open end of the guide wire 72 is attached to the insertion end of the main body of the urinary catheter 1. Several urine inlet ports 73 are provided on the lateral wall of the umbrella-shaped anti-retraction element 7, and these urine inlet ports 73 can be evenly distributed along the circumference of the umbrella-shaped anti-retraction element 7. The plate-fixing element 3 is mounted around the outlet end of the main body of the urinary catheter 1. The catheterization valve is attached to the outlet end of the main body of the urinary catheter 1, and the plate-fixing element 3 is positioned between the catheterization valve and the main body of the urinary catheter. 1.The traction wire 8 is independent of the main body of the urinary catheter 1. One end of the traction wire 8 passes successively through the catheterization channel 11 and the support cavity of the guide wire 72, then rests against the support end of the guide wire 71. The umbrella-shaped anti-retraction element 7 is made of elastic material. The support cavity of the guide wire 72, the catheterization channel 11, and the urine inlet orifice 73 are in communication. The external diameter of the umbrella-shaped anti-retraction element 7 in its natural state is greater than the external diameter of the main body of the urinary catheter 1, and the external diameter of the umbrella-shaped anti-retraction element 7 in its deformed state is substantially equal to the external diameter of the main body of the urinary catheter 1.

[0110] More specifically, thanks to the structural cooperation between the traction wire 8 and the umbrella-shaped anti-retraction element 7, the traction wire 8 allows the main body of the urinary catheter 1 to be inserted into the patient's urethra. Specific process: one end of the traction wire 8 passes successively through the catheterization channel 11 and the support cavity of the guide wire 72, and then rests against the support end of the guide wire 71. Under the pressure of the traction wire 8, the umbrella-shaped anti-retraction element 7 undergoes axial deformation, such that the external diameter of the deformed umbrella-shaped anti-retraction element 7 is substantially equal to the external diameter of the main body of the urinary catheter 1. Thus, the traction wire 8 can directly push the umbrella-shaped anti-retraction element 7 and a portion of the main body of the urinary catheter 1 into the female patient's urethra.Once the umbrella-shaped anti-retraction element 7 reaches the bladder opening, the traction wire 8 is released and withdrawn. The umbrella-shaped anti-retraction element 7 returns to its natural shape and fits into the bladder opening to limit the main body of the urinary catheter 1. The plate fixation element 3 and the catheterization valve are located outside the patient's urethral opening, i.e., outside the patient's body. Thanks to the umbrella-shaped anti-retraction element... Umbrella 7 and plate fixation element 3 restrict both ends of the main body of the urinary catheter 1, preventing the catheter from slipping. The catheterization valve, located outside the patient's body, allows the patient to manually control the opening and closing of the catheterization channel 11 inside the main body of the urinary catheter 1 to perform urination and bladder control. This application proposes a simple and easy-to-use structure.

[0111] Arguing that the length of the traction wire 8 is greater than the length of the deformed catheter, and one end of the traction wire 8 has a gripping portion to facilitate manual manipulation. The traction wire 8 can be made of nickel-titanium alloy or medical-grade stainless steel to meet the requirements of biocompatibility and mechanical strength. Through traction on the guide wire, the umbrella-shaped anti-retraction element deforms and retracts, thus allowing its insertion through the natural orifices to the target position.

[0112] In one possible embodiment, as illustrated in [Fig.8], the umbrella-shaped anti-withdrawal element 7 is formed by several circumferentially connected arc-shaped petals. The area enclosed by the arc-shaped petals forms the support cavity for the guide wire 72. One end of the arc-shaped petals is connected to form the support end of the guide wire 71, and the other end is connected to form the open end of the support cavity for the guide wire 72. A urine inlet orifice 73 is provided between each pair of arc-shaped petals; the urine inlet orifice 73 communicates with the support cavity for the guide wire 72. By adjusting the size of the opening of the urine inlet orifice 73, it is possible to adjust the fixation force of the umbrella-shaped anti-retraction element inside the body, according to actual needs.

[0113] In one possible embodiment, the plate attachment element 3 has an elliptical structure. At the center of this elliptical structure is a fixation orifice whose internal diameter is adapted to the external diameter of the main body of the urinary catheter 1. The elliptical structure is mounted on the outlet end of the main body of the urinary catheter 1 via the fixation orifice, so as to fit into the urethral orifice and prevent the catheter from retracting into the bladder. The elliptical design reduces the width of the left and right sides of the plate attachment element 3, thus facilitating its concealment within the labia, reducing pressure on the left and right sides of the labia.

[0114] In one possible embodiment, an annular groove 12 is formed on the inner wall of the main body of the urinary catheter 1, along the circumferential direction of the urinary catheter 1. A sealing ring of the tube body 4 is located on the outer wall of the main body of the urinary catheter 1, corresponding to the position of the annular groove 12. The sealing joint of the tube body 4 is an annular protrusion structure, the outer diameter of the annular protrusion structure being greater than the outer diameter of the main body of the urinary catheter 1, the size of the annular protrusion structure being adapted to the dilation of the female urethra.

[0115] More specifically, the tube body seal 4 is disposed on the outer wall of the main body of the urinary catheter 1, corresponding to the position of the annular groove 12, so that the tube body seal 4 adheres to the urethral wall to ensure a sealing function. The presence of the annular groove 12 allows the tube body seal 4 to have a compression space, thus preventing continuous pressure of the tube body seal 4 on the urethral wall. The tube body seal 4 is an annular protrusion structure whose external diameter is greater than the external diameter of the main body of the urinary catheter 1. The size of this protrusion is adapted to the dilation of the female urethra, allowing this annular protrusion structure to adhere tightly to the urethral wall, thus ensuring a sealing function and preventing urine leakage.

[0116] In one possible embodiment, the catheterization valve comprises a control valve body 61 and a movable ball 62. One end of the control valve body 61 is attached to the discharge end of the main body of the urinary catheter 1. The control valve body 61 is provided with a spherical housing 611. The lateral wall of the control valve body 61 extends outward to form a spherical chamber 612, the spherical chamber 612 and the spherical housing 611 being in communication. The control valve body 61 is traversed lengthwise by a urine drainage channel 613 in communication with the catheterization channel 11, the urine drainage channel 613 passing through the spherical housing 611. The movable ball 62 is disposed inside the spherical housing 611.In which, the spherical housing 611 is in tight fit with the movable ball 62, and the external diameter of the urine outlet channel 613 is less than the external diameter of the spherical housing 611.

[0117] In addition, the main body of the urinary catheter 1, the umbrella-shaped anti-retraction element 7, the plate fixing element 3, the tube body sealing gasket 4 and the control valve body 61 are made as a single piece of elastic material conforming to biosafety standards, more specifically silicone, in order to simplify the overall structure while improving user comfort.

[0118] More specifically, when the spherical chamber 612 of the control valve body 61 is subjected to a compressive force, the movable ball 62 moves from the spherical housing 611 towards the position of the spherical chamber 612, allowing the opening of the urine drainage channel 613 inside the control valve body 61, thus performing the micturition function, as illustrated in Figures 6 to 9. Once micturition is complete, by pressing the movable ball 62 in the spherical chamber 612, the movable ball 62 is pushed back into the spherical housing 611 of the control valve body 61. The movable ball 62 adheres to the lateral wall of the spherical housing 611, obstructing and closing the central urine drainage channel 613, thus achieving the micturition control effect.

[0119] In actual use, in its natural state, the traction wire 8 is successively inserted into the urine drainage channel 613 and the catheterization channel 11, then into the support cavity of the guide wire 72, and presses against the support end of the guide wire 71 to stretch and deform the umbrella-shaped anti-withdrawal element 7, as illustrated in [Fig. 7]. After deformation, the external diameter of the umbrella-shaped anti-withdrawal element 7 gradually decreases until it becomes equal to the external diameter of the main body of the urinary catheter 1. One end of the umbrella-shaped anti-withdrawal element 7 is first inserted into the urethra of the female patient as far as the bladder orifice, then the umbrella-shaped anti-withdrawal element 7 is released to return to its natural shape and fit into the bladder orifice.The plate fixation element 3 then fits into the patient's urethral opening, thus anchoring the catheter in the position described in this request. At this point, the catheterization valve is located outside the patient's urethral opening, allowing the patient to control urination by compressing the catheterization valve.

[0120] In one possible embodiment, taking the axial direction of the main body of the urinary catheter 1 as a reference, the line connecting the center of the spherical chamber 612 and the center of the spherical housing 611 forms a predetermined angle of deviation with the axial direction of the main body of the urinary catheter 1, as illustrated in Figures 6, 7, and 9. The spherical chamber 612 and the spherical housing 611 may be partially overlapped, provided that this does not affect the voiding control function. The diameter of the spherical chamber 612 may be slightly larger than the diameter of the movable ball 62, and the diameter of the spherical housing 611 may be slightly smaller than the diameter of the movable ball 62, in order to achieve a tight fit with the movable ball 62 and thus improve the stability of voiding control.

[0121] Example of implementation 3

[0122] The present embodiment also provides a structural element for a female urinary catheter. This female urinary catheter comprises a main body of the urinary catheter provided with a catheterization channel. The structural element includes in addition: a petal-shaped fixation element, the petal-shaped fixation element being arranged around the insertion end of the main body of the urinary catheter, along the circumferential direction; or an umbrella-shaped anti-retraction element, the umbrella-shaped anti-retraction element having a guide wire support end, the interior of the umbrella-shaped anti-retraction element having a guide wire support cavity, the open end of the guide wire support cavity being connected to the insertion end of the main body of the urinary catheter, a urine inlet port being provided on the umbrella-shaped anti-retraction element, the guide wire support cavity, the catheterization channel and the urine inlet port being in communication.

[0123] More specifically, one end of the main body of the urinary catheter is the insertion end, and the other end is the drainage end. By attaching a catheterization valve to the drainage end to control urination, after catheter insertion, the catheterization valve remains at the patient's urethral orifice, allowing the patient to manually control the opening and closing of the catheterization channel inside the main body of the urinary catheter to perform and control urination. By attaching a petal-shaped fixation element or an umbrella-shaped anti-removal element to the insertion end of the main body of the urinary catheter, the petal-shaped fixation element or the umbrella-shaped anti-removal element fits into the patient's bladder orifice.The petal-shaped retention element is secured around the insertion end of the main body of the urinary catheter, along its circumference. The upper end of the umbrella-shaped retention element has a guidewire support end, and the interior of the umbrella-shaped retention element has a guidewire support cavity. The open end of this guidewire support cavity is secured to the insertion end of the main body of the urinary catheter. A urine inlet port is provided on the side wall of the umbrella-shaped retention element. Multiple urine inlet ports can be evenly distributed around the circumference. The guidewire support cavity, the catheterization channel, and the urine inlet port are connected. The umbrella-shaped retention element is made of elastic material.The external diameter of the umbrella-shaped anti-withdrawal element in its natural state is greater than the external diameter of the main body of the urinary catheter, and the external diameter of the umbrella-shaped anti-withdrawal element in its deformed state is substantially equal to the external diameter of the main body of the urinary catheter.

[0124] In which, the external diameter of the naturally occurring umbrella-shaped anti-withdrawal element is greater than the external diameter of the main body of the urinary catheter, and the external diameter of the umbrella-shaped anti-retraction element in the deformed state is substantially equal to the external diameter of the main body of the urinary catheter.

[0125] In this embodiment, an annular groove can be formed on the inner wall of the main body of the urinary catheter, along its circumferential direction, and a tube body seal can be positioned on the outer wall of the main body of the urinary catheter, also along its circumferential direction. The tube body seal corresponds in position to the annular groove, so that the tube body seal adheres to the urethral wall to provide a seal. At the same time, the presence of the annular groove allows the tube body seal a compression space, thus preventing continuous pressure on the urethral wall.

[0126] The specific structure of the catheterization valve can be designed as described in embodiment 1 or embodiment 2. The external diameter of the main body of the urinary catheter is adapted to the size of the urethra, while the size of the catheterization valve can be slightly larger than that of the urethra. To further improve slip resistance, an elliptical plate-shaped fixation element can be arranged around the end of the main body of the urinary catheter near the external voiding control portion, so as to fit into the urethral orifice and further prevent slippage.

[0127] As described in embodiment 1 and embodiment 2, in one possible embodiment, the catheterization valve can be designed to comprise a control valve body and a movable ball. One end of the control valve body is attached to the discharge end of the main body of the urinary catheter. The control valve body is provided with a spherical housing. The lateral wall of the control valve body extends outward to form a spherical chamber, the spherical chamber and the spherical housing being in communication. A urine drainage channel runs lengthwise through the control valve body, communicating with the catheterization channel, the urine drainage channel passing through the spherical housing. The movable ball is disposed inside the spherical housing.In which the spherical housing fits tightly with the movable ball, and the external diameter of the urine drainage channel is smaller than the external diameter of the spherical housing. Furthermore, the main body of the urinary catheter, the umbrella-shaped anti-retraction element, the plate fixation element, the tube body seal, and the control valve body are manufactured as a single unit from a biosafety-compliant elastic material, specifically silicone, to simplify the overall structure while improving user comfort. When the opposite side of the spherical chamber of the control valve body is subjected to a compressive force, The movable ball moves from the spherical housing to the position of the spherical chamber, thus opening the urine drainage channel within the control valve body and performing the function of urination. Once urination is complete, pressing the movable ball into the spherical chamber pushes it back into the spherical housing of the control valve body. The movable ball adheres to the lateral wall of the spherical housing, obstructing and closing the central urine drainage channel, thereby achieving the urination control effect.

[0128] In one possible embodiment, taking the axial direction of the main body of the urinary catheter as a reference, the line connecting the center of the spherical chamber and the center of the spherical housing forms a predetermined angle of deviation with the axial direction of the main body of the urinary catheter; that is, the spherical chamber can be positioned close to the plate attachment element. The spherical chamber and the spherical housing may partially overlap, provided that this does not affect the voiding control function. The diameter of the spherical chamber may be slightly larger than the diameter of the movable ball, and the diameter of the spherical housing may be slightly smaller than the diameter of the movable ball, in order to achieve a tight fit with the movable ball and thus improve the stability of voiding control.

[0129] The plate attachment element can be designed in the form of an elliptical structure. A central portion of the elliptical structure is traversed by a fixation orifice, the internal diameter of which is adapted to the external diameter of the main body of the urinary catheter. The elliptical structure is mounted on the outlet end of the main body of the urinary catheter via the fixation orifice, so as to fit into the urethral orifice and prevent the catheter from retracting into the bladder. Being designed in the form of an elliptical structure reduces the width of the left and right sides of the plate attachment element, thus facilitating its concealment within the labia and reducing pressure on the left and right sides of the labia.

[0130] When the insertion end of the main body of the urinary catheter is provided with a petal-shaped fixation element, the structure of this petal-shaped fixation element has been described in detail in Embodiment 1. It is sufficient to refer to the structure described in Embodiment 1 for its placement. Correspondingly, several strip grooves of predetermined length can be formed on the inner wall of the other end of the main body of the urinary catheter, along the axial direction. By designing the petal-shaped fixation element as comprising several sectorial blades arranged at regular intervals, a space is left between two adjacent sectorial blades, thus facilitating their retraction under the effect of an external force. The petal-shaped fixation element The petal-shaped element is retracted under external force, with a diameter smaller than that of the urethra. In its natural state, it is expanded, with a diameter larger than that of both the urethra and the bladder opening. By creating several grooves of predetermined length in a band on the inner wall of the insertion end of the main body of the urinary catheter, it is possible to facilitate the retraction of the petal-shaped fixation element. The predetermined length is significantly shorter than the length of the main body of the urinary catheter.

[0131] At this point, the structural element and the main body of the urinary catheter can be compressed and loaded into a manually tearable sheath. Therefore, the tube body seal 4 and the petal-shaped securing element 2 must be designed as elastic structures to allow their compression and loading into the manually tearable sheath. During use, the peelable sheath is inserted through the urethral opening to the bladder opening, and then the urinary catheter is advanced using a push rod. Simultaneously, the peelable sheath is torn and withdrawn, allowing the petal-shaped securing element 2 to deploy at the bladder opening. After appropriate positioning, the sheath is further withdrawn until the securing plate is anchored to the urethral opening. Thus, the position of the catheter is fixed by the petal-shaped fixing element 2.

[0132] When the insertion end of the main body of the urinary catheter is provided with an umbrella-shaped anti-withdrawal element:

[0133] Correspondingly, it can be used in combination with a traction wire, allowing fixation by interlocking while also permitting direct insertion of the urinary catheter into the patient's urethra through the urethral orifice using the traction wire. The specific embodiment process can be referred to in embodiment example 2.

[0134] The umbrella-shaped anti-retraction element can be designed as being formed by several circumferentially connected, arc-shaped petals. The area enclosed by the arc-shaped petals forms the guidewire support cavity. One end of the arc-shaped petals is connected to form the guidewire support end, and the other end is connected to form the open end of the guidewire support cavity. A urine inlet orifice is provided between each pair of arc-shaped petals, communicating with the guidewire support cavity.

[0135] It should be clarified that the structures, proportions, dimensions, and other representations illustrated in the figures accompanying this description serve only to supplement the content disclosed in the description, to facilitate understanding and reading by those familiar with this technique, and do not constitute restrictive conditions for the implementation of this utility model. Therefore, they have no substantial technical significance. Any Any modification of structure, variation in proportions, or adjustment of dimensions, insofar as it does not affect the effect or objective that this utility model can achieve, must remain within the scope of the technical content disclosed by this utility model. Furthermore, the terms used in this description, such as "top," "bottom," "left," "right," "middle," and "one," are solely for ease of explanation and do not limit the scope of this utility model. Any change or adjustment to these relative relationships, without substantial modification of the technical content, must also be considered within the scope of this utility model.

[0136] The foregoing constitutes only preferred embodiments of this utility model and in no way constitutes a formal limitation of the utility model. Although the utility model has been disclosed using the aforementioned preferred embodiments, this does not limit this utility model. Any person competent in the field may, without departing from the scope of the technical solution of this utility model, make slight modifications or adaptations to the disclosed technical content to obtain equivalent embodiments. As long as these modifications or adaptations do not deviate from the content of the technical solution of the utility model, they fall within the scope of this utility model.

Claims

Demands

1. Female urinary catheter, characterized in that said female urinary catheter comprises: a main body of the urinary catheter, said main body of the urinary catheter being traversed by a catheterization channel, the inner wall of the body of said main body of the urinary catheter having, in the circumferential direction, an annular groove; a petal-shaped fixation element, said petal-shaped fixation element being arranged circularly around the insertion end of the main body of the urinary catheter in the circumferential direction; a plate fixation element, said plate fixation element being mounted on the outlet end of the main body of the urinary catheter; a tube body seal, said tube body seal being disposed on the outer wall of the main body of the urinary catheter and corresponding to the position of the annular groove;a catheterization valve, said catheterization valve being fixed to the outlet end of the main body of the urinary catheter, the plate fixation element being located between said catheterization valve and said main body of the urinary catheter; wherein said tube body seal and said petal-shaped fixation element are all made of elastic material.

2. A female urinary catheter according to claim 1, characterized in that: said plate attachment element has an elliptical structure, said elliptical structure comprising a fixation orifice through its central portion, the internal diameter of which is adapted to the external diameter of the main body of the urinary catheter, and the plate attachment element is disposed around the outlet end of the main body of the urinary catheter via said fixation orifice; said tube body seal is an annular protrusion structure, the external diameter of which is greater than the external diameter of the main body of the urinary catheter, and whose size is adapted to the expansion of the female urethra; said petal-shaped fixation element comprises several sectorial blades, which are arranged at intervals along the circumferential direction on the insertion end of the main body of the urinary catheter.

3. Female urinary catheter according to claim 2, characterized in that: the inner wall of the insertion end of the main body of the urinary catheter has several strip grooves of predefined length, said strip grooves extending over a predefined length from the insertion end to the discharge end.

4. A female urinary catheter according to claim 3, characterized in that said catheterization valve comprises: an elastic valve body, one end of which is fixed to the outlet end of the main body of the urinary catheter, said elastic valve body having a spherical cavity, the lateral wall of the elastic valve body having a hemispherical groove opening inwards, said spherical cavity and said hemispherical groove being communicating, said elastic valve body further comprising, in the longitudinal direction, an opening and closing channel communicating with the catheterization channel, said opening and closing channel passing through said spherical cavity; a ball, said ball being movably disposed in said spherical cavity; an elastic sheath, said elastic sheath being mounted on the outside of the elastic valve body;in which said size of the spherical cavity is adapted to said ball, the external diameter of said opening and closing channel is less than the external diameter of said spherical cavity, said ball is made from biosafety-compatible materials, the internal walls at both ends of the elastic sheath each have a circle of limiting protrusions, the external walls at both ends of the elastic valve body each have a circle of limiting grooves, said limiting protrusions fitting into said limiting grooves.

5. Female urinary catheter according to claim 4, characterized in that: said main body of the urinary catheter, said petal-shaped fixing element, said plate fixing element, said tube body sealing gasket and said elastic valve body are one-piece and all made from biosafety-compatible elastic materials.

6. Female urinary catheter according to claim 3, characterized in that said catheterization valve comprises: a control valve body, said control valve body being fixed by one end to the discharge end of the main body of the urinary catheter, said control valve body having a spherical housing, the lateral wall of said control valve body extending outwards to form a spherical chamber, said spherical chamber being communicative with the spherical housing, said control valve body further comprising, in the longitudinal direction, a urine drainage channel communicating with said catheterization channel, said urine drainage channel passing through said spherical cavity; a movable ball, said movable ball being movably disposed in said spherical housing;in which the size of the spherical housing is adapted to said movable ball, the external diameter of the urine drainage channel is less than the external diameter of the spherical housing.

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