Urinary catheter traction fixing device

Abstract

The utility model relates to a ureter traction fixing device which comprises a cover body part, the cover body part is provided with an arc face structure, the top face of the arc face is used for abutting against the penis head of a patient to provide a fixing function, and a first hole for a catheter penetrating out of the penis of the patient to penetrate through is reserved in the cover body part. The cover body part can be detachably installed on the surface of the catheter in a sleeving or clamping mode, the near end of the catheter is provided with a balloon used for exerting compression force on a urethral wound of a patient, an opening of the arc face of the cover body part faces the end away from the balloon, and under the condition that the cover body part is arranged on the surface of the catheter in a sleeving mode, the balloon faces the end away from the balloon. The wall thickness of the cover body part at the first hole is larger than that at the edge position of the arc surface structure, and a flange which shrinks inwards in the radial direction of the catheter is arranged at the first hole.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a urinary catheter traction and fixation device. Background Technique

[0002] Indwelling catheterization is one of the commonly used invasive operations in clinical practice. Since it can accurately record the hourly urine volume and measure the urine specific gravity to judge the condition during the rescue of critically ill and shocked patients, empty the bladder for pelvic surgery patients to avoid accidental injury during the operation, and keep the perineum clean for urinary incontinence patients, etc., it has become one of the important clinical treatment means.

[0003] For some patients undergoing prostate, bladder, and urethra surgeries, after the operation, the urinary catheter balloon is often needed to compress the wound to stop bleeding, and at the same time, the urinary catheter is pulled to provide a certain tension to achieve the purpose of compressing bleeding or reducing the anastomotic tension. The currently commonly used method is to pull the indwelling urinary catheter. After reaching an appropriate tension, a gauze is tied to the urinary catheter close to the external urethral orifice, so that the urinary catheter is in a relatively fixed position.

[0004] However, this method has obvious disadvantages: 1. The tightness of the tied gauze mainly depends on the doctor's experience. If the gauze is tied loosely, the retraction tension of the urinary catheter becomes smaller, affecting the effect. 2. To maintain the reliability of fixation, usually the gauze is tied tightly. When adjusting the position or removing the urinary catheter, it is more difficult to untie the gauze, and sometimes scissors are needed to cut the gauze. 3. The gauze covers the urethral orifice, bringing trouble to the nursing and cleaning of the external urethral orifice.

[0005] In the prior art, a patent document with the publication number of CN217041046U proposed a urinary catheter traction and fixation device, which relates to the field of medical devices. It includes a first shell and a second shell. The side wall of the first shell is connected to the edge of the side wall of the second shell. When in use, the two can be buckled into a whole and form a placement cavity for placing the glans penis inside; one end of the buckled first shell and the second shell away from the opening of the placement cavity forms a clamping part for clamping the urinary catheter.

[0006] However, the fixed device designed in this patent has significant defects in practical applications. When the patient's body position changes or is impacted by external forces, the urinary catheter is prone to move. Although the device uses the clamping part connected to the two shells to provide continuous traction for the urinary catheter to stabilize its position, there is a lack of a key buffer device between the clamping part and the shell to effectively slow down the moving trend of the urinary catheter. Therefore, once the urinary catheter moves under the action of external forces, this force will be directly applied to the surface of the glans penis, resulting in compression of the glans penis and increasing the risk of glans penis mucosal injury.

[0007] In addition, on the one hand, there are differences in the understanding of those skilled in the art; on the other hand, when the applicant made this utility model, a large number of documents and patents were studied, but due to space limitations, all details and content were not listed in detail. However, this by no means means that this utility model does not possess the features of these existing technologies. On the contrary, this utility model already possesses all the features of the existing technologies, and the applicant reserves the right to add relevant existing technologies in the background art. Summary of the Utility Model

[0008] In view of the deficiencies of the existing technology, the present application proposes a urinary catheter traction fixing device, especially a traction fixing device that can reduce the impact of the urinary catheter on the glans penis, aiming to solve one or more technical problems in the existing technology.

[0009] In the current technology, there are already some fixing devices used to limit the position of the urinary catheter. They mainly achieve the fixation of the urinary catheter through the resistance force provided by the patient's glans penis, thereby preventing the catheter from shifting due to external force impact. However, these devices ignore an important problem: during the fixation process, the external force that causes the urinary catheter to have a tendency to move will be transferred to the glans penis, thereby impacting the glans penis. This impact may cause damage to the glans penis mucosa, bringing unnecessary medical risks. In summary, it is necessary to further improve these fixing devices to reduce the potential harm to the glans penis.

[0010] Therefore, in view of the above technical problems, this utility model proposes a urinary catheter traction fixing device, including a cover body part with an arc surface structure. It uses the top surface of the arc surface to abut against the patient's glans penis to provide a fixing effect. The cover body part is provided with a first hole for the urinary catheter passing through the patient's penis, so that the cover body part can be detachably installed on the surface of the urinary catheter in a sleeved or clamped form. The proximal end of the urinary catheter is configured with a balloon for applying a compressive force to the patient's urethral wound, and the opening of the arc surface of the cover body part faces away from the end of the balloon. When the cover body part is configured on the surface of the urinary catheter in a sleeved form, the wall thickness of the cover body part at the first hole is greater than the wall thickness at the edge position of the arc surface structure, and a flange that contracts inward in the radial direction of the urinary catheter is configured at the first hole. The wall thickness of the cover body part smoothly transitions from thick to thin from the central position to the edge position. Such a design enables the first hole to have sufficient width in the axial direction of the urinary catheter, thereby ensuring sufficient friction between the cover body part and the urinary catheter. In addition, the design of the flange provides an additional support point for the cover body part, increasing the contact area between the cover body part and the urinary catheter, and further enhancing the fixation between the cover body part and the urinary catheter.

[0011] According to a preferred embodiment, when the cover body part is arranged on the surface of the catheter in a snap-fit manner, the cover body part can be divided into two parts along the axis of the catheter. Each part of the cover body part is provided with a snap-fit component connected to the bottom surface where the arc surface opening is located. The two parts of the cover body part can be detachably connected to the surface of the catheter under the snap-fit cooperation between the two snap-fit components. By setting each snap-fit component to have a semi-cylindrical structure extending along the axis of the catheter, the two snap-fit components can be spliced with each other to buckle the catheter between them. The two snap-fit components that have completed buckling can be held on the surface of the catheter with a certain tightening force, so as to achieve the fixing effect. The two parts of the cover body part can be combined into a whole under the mutual snap-fit cooperation between the two snap-fit components, and thus can be detachably connected to the surface of the catheter, facilitating medical staff to adjust the position of the fixing device according to actual needs.

[0012] According to a preferred embodiment, a decompression spring is arranged outside the catheter. The cover body part and the fixing part are connected by the decompression spring. When the cover body part and the fixing part are installed, the decompression spring uses its own elastic force to maintain the pressing force exerted by the balloon at the proximal end of the catheter on the patient's urethral wound. Among them, the spring can slow down the moving speed of the catheter that moves due to the external pulling force by changing its own length.

[0013] The fixing device of the present utility model is additionally provided with a decompression spring between the cover body part and the fixing part compared with the traditional fixing device. Its main function is to provide buffering for the external force received by the catheter through the change of its own elastic force, effectively preventing excessive external force from directly impacting the glans penis of the patient, thereby avoiding possible injuries. When the fixing device is normally installed and the catheter is not subjected to additional external forces, the decompression spring is in a natural state to ensure that the balloon of the catheter maintains an appropriate pressing force. Once the catheter is subjected to an external force and has a tendency to move, the decompression spring can respond quickly. According to the direction of the external force, the spring can flexibly switch to a compressed state or a stretched state, and it shares at least part of this external force by changing the distance between the cover body part and the fixing part. This design not only avoids the possible injury caused by sudden external force changes directly impacting the glans penis of the patient, but also prevents the problem that the balloon of the catheter affects the hemostasis effect of the urethral wound due to sudden changes in external force, ensuring the safety and comfort of the patient during use.

[0014] According to a preferred embodiment, the cover body portion includes a frame layer and a cushion layer covering the frame layer. Both the proximal ends of the frame layer and the cushion layer are provided with a first opening through which the catheter passes out of the penis. The cover body portion is composed of the frame layer and the covering cushion layer. This double-layer structure design simplifies the manufacturing process. The frame layer provides stable structural support for the cover body portion, while the cushion layer covers the frame layer, reducing the risk of damage to the glans penis. In addition, the proximal ends of both the frame layer and the cushion layer are provided with the first opening, which allows the catheter to pass out of the penis, ensuring the fixation and stability of the catheter.

[0015] According to a preferred embodiment, the fixing portion includes a locking cylinder sleeved on the outer wall of the catheter and capable of moving along the length direction of the catheter. The locking cylinder has a first semi-cylinder body and a second semi-cylinder body that can be selectively separated and fastened. The design of the locking cylinder allows it to move along the length direction of the catheter, which enables medical staff to flexibly adjust the position of the locking cylinder according to the specific conditions and needs of the patient, thereby ensuring the stability and safety of the catheter in the body.

[0016] According to a preferred embodiment, connecting plates are provided on the proximal end faces of the first semi-cylinder body and the second semi-cylinder body. The connecting plates are provided with a second opening through which the catheter can pass. The connecting plates can provide a basis for connecting the two semi-cylinder bodies, ensuring the stability of the structure.

[0017] According to a preferred embodiment, the surface of the connecting plate is provided with two sliding grooves arranged in the radial direction of the catheter. The first semi-cylinder body and the second semi-cylinder body are slidably connected to the connecting plate through the sliding grooves. The two sliding grooves respectively limit the moving directions of the first semi-cylinder body and the second semi-cylinder body. These two sliding grooves are on the same straight line in the plane of the connecting plate, and their orientations are consistent with the radial direction of the circular cross-section of the catheter. This design allows the first semi-cylinder body and the second semi-cylinder body to approach or move away from each other, thereby realizing the locking and unlocking functions of the catheter.

[0018] According to a preferred embodiment, a push switch for opening and closing the first semi-cylinder body and the second semi-cylinder body is arranged on the surface of the locking cylinder. When the push switch is pressed, the two semi-cylinder bodies move away from each other to open the locking cylinder. When the push switch is released, the two semi-cylinder bodies move closer to each other to close the locking cylinder. By arranging the push switch on the surface of the locking cylinder, convenient control over the opening and closing operations of the first semi-cylinder body and the second semi-cylinder body is realized. Medical staff can simply press or release the push switch to easily open or close the locking cylinder, greatly improving the convenience of use and operation efficiency.

[0019] According to a preferred embodiment, the proximal end of the decompression spring is connected to the surface of the cover body in a manner that avoids the first hole, and the distal end of the decompression spring is connected to the surface of the connecting plate in a manner that avoids the second hole. This design achieves effective connection between the decompression spring, the cover body, and the connecting plate while avoiding interference with the first and second holes, ensuring the stability and effectiveness of the spring.

[0020] According to a preferred embodiment, the inner surfaces of the first and second half-cylinders are provided with an anti-slip layer that enhances friction between them and the catheter. This design effectively increases friction between the half-cylinders and the catheter, making it less likely for the catheter to slip or shift out of the half-cylinders when subjected to external forces, such as patient movement or changes in body position, thereby ensuring the stability of the catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a partial schematic diagram of the cover body portion in Example 1 of the present invention being arranged on the urinary catheter in a sleeve-type manner;

[0022] Figure 2 This is a partial schematic diagram of the cover body portion of Example 1 of the present invention being arranged on the urinary catheter in a snap-fit manner;

[0023] Figure 3 This is a schematic diagram of the first viewing angle when the two parts of the cover body in the snap-fitting form in Example 1 of the present invention are separated;

[0024] Figure 4 This is a schematic diagram of the second viewing angle when the two parts of the cover body in the snap-fitting form in Example 1 of the present invention are separated;

[0025] Figure 5 This is a schematic diagram of the overall structure of the urinary catheter pulling and fixing device in Example 2 of the present utility model;

[0026] Figure 6 This is a partial schematic diagram of the decompression spring and the fixing portion after the urinary catheter is removed in Example 2 of the present utility model;

[0027] Figure 7 This is a partial schematic diagram of the fixed portion in the closed state in Example 2 of the present utility model;

[0028] Figure 8 It is a partial schematic diagram of the cover body in Example 2 of the present invention after being cut along the axis of the catheter.

[0029] Reference Signs List

[0030] 100: Cover body part; 110: First opening; 120: Flange; 130: Engaging component; 140: Cushion layer; 150: Frame layer; 200: Decompression spring; 300: Fixing part; 310: Locking cylinder; 320: Press switch; 330: First semi-cylindrical body; 340: Second semi-cylindrical body; 350: Anti-slip layer; 360: Connecting plate; 370: Second opening; 400: Urinary catheter. Detailed implementation mode

[0031] The present utility model will be described in detail below with reference to the accompanying drawings.

[0032] Orientation definition: The end of the urinary catheter 400 located inside the urethra is the proximal end, and the end located outside the urethra is the distal end.

[0033] Embodiment 1

[0034] The present utility model relates to a urinary catheter traction fixing device, as Figures 1 to 4 shown, which includes a cover body part 100 presenting an arc surface structure, and a urinary catheter 400 passing through the patient's penis and having a balloon at the distal end configured to apply a compressive force to the patient's urethral wound. The cover body part 100 is provided with a first opening 110 for the urinary catheter 400 to pass through. The configuration of the first opening 110 enables the cover body part 100 to be detachably installed on the surface of the urinary catheter 400 in a sleeved or engaged form. The cover body part 100 can be configured to have a certain elasticity, which enables the cover body part 100 to abut against the patient's glans penis with its top surface facing the proximal end of the urinary catheter 400. Medical staff can adjust the position of the cover body part 100 on the surface of the urinary catheter 400 according to the magnitude of the compressive force required by the balloon, and support the glans penis through the frictional force between it and the urinary catheter 400 without damaging the patient's glans penis. Preferably, as Figures 1 to 4 shown, the cover body part 100 can have different structural designs according to different detachable connection methods with the surface of the urinary catheter 400.

[0035] Preferably, as Figure 1As shown, when the cover part 100 is configured on the surface of the catheter 400 in a sleeved form, the inner diameter of the first opening 110 can be designed to be slightly smaller than the outer diameter of the catheter 400. Since the cover part 100 itself has a certain elasticity, this enables the first opening 110 to wrap around the surface of the catheter 400 with a certain pre-tightening force, so that the two are relatively fixed through a certain frictional force. Preferably, the arc surface structure of the cover part 100 adopts different wall thickness designs at different positions. Specifically, the wall thickness of the cover part 100 at the first opening 110 is greater than that at the edge position of the arc surface structure, and the wall thickness change adopts a smooth transition method. This design makes the first opening 110 have sufficient width in the axial direction of the catheter 400, thus ensuring sufficient frictional force between the cover part 100 and the catheter 400 to guarantee the stability of the fixing structure. In addition, in order to further enhance the frictional force between the two, a flange 120 that contracts inward in the radial direction of the catheter 400 is arranged at the first opening 110. The design of the flange 120 provides an additional support point for the cover part 100, increases the contact area between the cover part 100 and the catheter 400, and further strengthens the fixation between the cover part 100 and the catheter 400.

[0036] Preferably, as Figure 3 , Figure 4 shown, when the cover part 100 is configured on the surface of the catheter 400 in a snap-fit form, the inner diameter of the first opening 110 can be designed to be slightly larger than the outer diameter of the catheter 400. At this time, the first opening 110 does not have the fastening force to fix the cover part 100 on the surface of the catheter 400. Particularly, when configured in a snap-fit form, the cover part 10 can be divided into two parts along the axis of the catheter 400, and each part is provided with a snap-fit component 130 connected to the bottom surface where the arc surface opening is located. Each snap-fit component 130 has a semi-cylindrical structure extending along the axis of the catheter 400, and the two snap-fit components 130 can be spliced with each other and the catheter 400 is buckled between them. The two snap-fit components 130 after buckling can form a complete hollow cylindrical structure, and the inner diameter of this cylindrical structure is designed to be slightly smaller than the outer diameter of the catheter 400, so as to ensure that the snap-fit component 130 can be held on the surface of the catheter 400 with a certain fastening force, thus achieving the fixing effect. The two parts of the cover part 100 can be combined into a whole under the mutual snap-fit of the two snap-fit components 130, and thus can be detachably connected to the surface of the catheter 400.

[0037] Preferably, as Figures 1 to 4 shown, the cover part 100 can be selectively set as a single-layer structure or a double-layer structure according to its different detachable connection methods with the surface of the catheter 400. Among them, when the cover part 100 is in a sleeved form, a single-layer structure is adopted; when the cover part 100 is in a snap-fit form, a double-layer structure is adopted.

[0038] Preferably, as Figures 2 to 4 shown, when the cover body part 100 adopts a double-layer structure design, the cover body part 100 includes a frame layer 150 and a cushion layer 140 covering the frame layer 150. Both the frame layer 150 and the cushion layer 140 have an arc surface structure and are both divided into two parts along the axis of the catheter 400. The cushion layer 140 can be made of a relatively soft material such as medical rubber, etc., for direct contact with the patient's glans penis to avoid causing mechanical damage. The frame layer 150 can be made of a relatively hard material such as medical plastic, so as to ensure its stable connection with the engaging component 130. After the cover body part 100 is engaged, corresponding first openings 110 are reserved on both the frame layer 150 and the cushion layer 140.

[0039] Preferably, as Figure 1 shown, when the cover body part 100 adopts a single-layer structure design, it only contains a cushion layer 140 inside. The difference between the cushion layer 140 of this single-layer structure and the cushion layer 140 of the double-layer structure is that: in the double-layer structure, the cushion layer 140 is divided into two parts along the axis of the catheter 400, while in the single-layer structure, the cushion layer 140 is a continuous whole, and only the first opening 110 and the flange 120 are provided at the position where the catheter 400 passes through.

[0040] Embodiment 2

[0041] This embodiment is a further improvement of Embodiment 1, and the repeated content will not be elaborated.

[0042] The utility model relates to a urinary catheter traction fixing device, as Figure 5 shown, which includes: a cover body part 100 abutted against the patient's glans penis to provide a supporting effect, a fixing part 300 for fixing the catheter 400 passing through the patient's penis, and a decompression spring 200 connecting the cover body part 100 and the fixing part 300. Preferably, the coil diameter of the decompression spring 200 is larger than the outer diameter of the catheter 400, so that the catheter 400 can pass through the middle hole where the central axis of the decompression spring 200 is located. In particular, considering that the distal end of the catheter 400 is configured with an inflation tube inlet and a water filling tube inlet to form a three-port bifurcated structure, the fixing device of the utility model can be sleeved onto the outer surface of the catheter 400 from the proximal end before the catheter 400 is inserted into the bladder and the balloon at the proximal end of the catheter 400 is not inflated, so as to assemble the fixing device on the catheter 400.

[0043] Preferably, as Figure 5 shown, the proximal end of the catheter 400 has a balloon, and medical staff can pull the catheter 400 so that the balloon can act on the patient's urethral wound with a certain pressing force. The distal end of the catheter 400 is connected to a urine bag, so as to realize the function of urine drainage.

[0044] Preferably, the decompression spring 200 can effectively utilize its own elastic force to ensure that the balloon at the proximal end of the catheter 400 exerts an appropriate pressing force on the patient's urethral wound. In addition, the decompression spring 200 can also slow down the moving speed of the catheter 400 that moves due to an external pulling force by changing its own length. Specifically, the catheter 400 may move due to an external force. If the decompression spring 200 is not provided, the catheter 400 will experience a sudden change in state from rest to motion. Setting the decompression spring 200 can utilize its own elastic force to extend the duration of the change of the catheter 400 from the static state to the moving state, thereby reducing the impact degree of the sudden change in the state of the catheter 400 on the patient's urethral wound or the front end of the glans penis. When dealing with the situation where the catheter 400 tends to move distally due to an external force, the fixing part 300 clamped on the surface of the catheter 400 will also move away from the cover part 100 accordingly. Since the decompression spring 200 is arranged between the cover part 100 and the fixing part 300, it can store the external force as elastic potential energy by stretching its own length. Such a design can significantly reduce the sudden increase in the pressing force of the balloon of the catheter 400 on the urethral wound, thereby avoiding the adverse impact on the recovery of the patient's urethral wound caused by excessive balloon pressing force. When the catheter 400 has a tendency to move proximally due to an external force, the fixing part 300 clamped on the surface of the catheter 400 also has a tendency to move towards the cover part 100. Since the decompression spring 200 is arranged between the cover part 100 and the fixing part 300, it can store the external force as elastic potential energy by compressing its own length, thereby reducing the acting force directly exerted by the fixing part 300 on the cover part 100 and avoiding excessive compression on the patient's glans penis. The stiffness (elastic coefficient) of the decompression spring 200 is selected with an appropriate value so that it can not only ensure sufficient pressing force but also provide sufficient elasticity when the patient moves, avoiding the sense of pulling and discomfort.

[0045] Preferably, as Figure 8 shown, the main structure of the cover part 100 includes a frame layer 150 made of medical plastic and a cushion layer 140 made of medical rubber covering the frame layer 150. The cushion layer 140 directly abuts against the patient's glans penis, while the frame layer 150 is directly connected to the decompression spring 200.

[0046] Preferably, as Figure 7 、 Figure 8 shown, both the frame layer 150 and the cushion layer 140 are provided with first openings 110, so that the catheter 400 can pass through these two layers of structures to ensure the smooth use of the catheter 400. The inner diameter of the first opening 110 is slightly larger than that of the catheter 400 to prevent the cover part 100 from causing unsmooth drainage due to squeezing the catheter.

[0047] Preferably, the fixing portion 300 is intended to stabilize the position of the urinary catheter 400, thereby maintaining the compressive force of the proximal balloon. Figure 5 、 Figure 6 As shown, its core component is a locking cylinder 310, which can be flexibly mounted on the outer wall of the catheter 400 and can move freely along its length. The locking cylinder 310 includes a first half-cylinder 330 and a second half-cylinder 340, which are arranged opposite to each other and the proximal ends of both are connected to the connecting plate 360. When the two are enclosed, a complete hollow cylindrical structure can be formed, the inner surface of which is provided with an anti-slip layer 350, thereby applying a clamping force to the catheter 400 to ensure stable fixation. To achieve the opening and closing operation of the half-cylinders, the connecting plate 360 is provided with a chute, which is slidably connected to the proximal end faces of the two half-cylinders. The number of chute is preferably two, so as to respectively limit the movement direction of the first half-cylinder 330 and the second half-cylinder 340. Preferably, the two chute are located on the same straight line within the plane of the connecting plate 360, and their orientation is consistent with the radial direction of the circular cross-section of the catheter 400. This design allows the first half cylinder 330 and the second half cylinder 340 to move closer to or farther away from each other, thereby achieving the locking and unlocking functions of the urinary catheter 400 .

[0048] Preferably, if Figure 6 、 Figure 7 As shown, the connecting plate 360 is a circular structure with a hollowed-out portion at its center, forming a second opening 370 that allows the catheter 400 to pass through. The proximal end of the pressure relief spring 200 is connected to the surface of the housing 100 (i.e., the frame layer 150), ensuring that it does not interfere with the first opening 110; while its distal end is connected to the surface of the connecting plate 360, also avoiding obstruction of the second opening 370.

[0049] Preferably, for ease of operation, a push switch 320 is provided on the surface of the lock cylinder 310 to control the opening and closing of the first half cylinder 330 and the second half cylinder 340. Figure 7 、 Figure 8 As shown, when the push switch 320 is pressed, the two half-cylinders move away from each other, realizing the opening of the lock cylinder 310; and when the push switch 320 is released, the half-cylinders move closer to each other, completing the closing of the lock cylinder 310. This function is achieved thanks to the pre-loaded spring preset inside the lock cylinder 310. When not subject to external force, the pre-loaded spring remains in a compressed state, allowing the half-cylinders to fit tightly together to form a closed cylinder. The push switch 320 releases the force of the pre-loaded spring through the internal transmission mechanism, causing it to stretch, thereby pushing the half-cylinders to separate. When the medical staff releases the switch, the pre-loaded spring returns to a compressed state, allowing the half-cylinders to fit tightly again, realizing the merging of the lock cylinder 310 and ensuring that the catheter 400 is firmly locked.

[0050] Preferably, the buckle cylinder 310 has other setting methods. In another structure, the positions of the first half cylinder 330 and the second half cylinder 340 are kept fixed, and the locking function is realized by a locking tongue connected to the push switch 320. The locking tongue can move in a direction perpendicular to the surface of the catheter 400, and a contact member adapted to the surface curvature of the catheter 400 is provided at one end thereof. Locking is achieved by fitting the surface of the catheter 400, and unlocking is achieved by moving away from the surface of the catheter 400. At the same time, the buckle cylinder 310 can also draw on the design of the locking component at the handle part of the luggage case pull rod to effectively lock the catheter 400.

[0051] It should be noted that the above specific embodiments are exemplary. Those skilled in the art can come up with various solutions inspired by the disclosure of the present invention, and these solutions also fall within the scope of the disclosure of the present invention and within the protection scope of the present invention. Those skilled in the art should understand that the description and drawings of the present invention are illustrative and do not constitute a limitation on the claims. The protection scope of the present invention is defined by the claims and their equivalents. Throughout the text, the features guided by "preferably" are only an optional manner and should not be understood as a must. Therefore, the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A urinary catheter traction and fixation device, comprising: A cover body part (100) having an arc surface structure, which abuts against the glans penis of the patient by the top surface of the arc surface to provide a fixation effect. It is characterized in that The cover body part (100) is reserved with a first hole (110) for the urinary catheter (400) passing through the patient's penis, so that the cover body part (100) can be detachably installed on the surface of the urinary catheter (400) in a sleeved or clamped form. A balloon for applying a pressing force to the patient's urethral wound is arranged at the proximal end of the urinary catheter (400), and the opening of the arc surface of the cover body part (100) faces away from the end of the balloon. When the cover body part (100) is configured on the surface of the urinary catheter (400) in a sleeved form, the wall thickness of the cover body part (100) at the first hole (110) is greater than the wall thickness at the edge position of the arc surface structure, and a flange (120) that contracts inward in the radial direction of the urinary catheter (400) is arranged at the first hole (110).

2. The fixing device according to claim 1, wherein, When the cover body part (100) is configured on the surface of the urinary catheter (400) in a clamped form, the cover body part (100) can be divided into two parts along the axis of the urinary catheter (400). Each part of the cover body part (100) is provided with a clamping component (130) connected to the bottom surface where the arc surface opening is located. The two parts of the cover body part (100) can be detachably connected to the surface of the urinary catheter (400) under the clamping cooperation between the two clamping components (130).

3. The fixing device according to claim 1, wherein, A decompression spring (200) is arranged outside the urinary catheter (400). The cover body part (100) and the fixing part (300) are connected by the decompression spring (200). When the cover body part (100) and the fixing part (300) are installed, the decompression spring (200) uses its own elastic force to maintain the pressing force exerted by the balloon at the proximal end of the urinary catheter (400) on the patient's urethral wound. Among them, the decompression spring (200) can slow down the moving speed of the urinary catheter (400) that moves due to an external pulling force by changing its own length.

4. The fixing device according to claim 2, wherein The cover body part (100) includes a frame layer (150) and a protective cushion layer (140) covering the frame layer (150). Among them, the proximal ends of the frame layer (150) and the protective cushion layer (140) are both provided with a first hole (110) for the urinary catheter (400) to pass through the penis.

5. The fixing device according to claim 3, characterized in that, The fixing part (300) includes a lock cylinder (310) sleeved on the outer wall of the urinary catheter (400) and capable of moving along the length direction of the urinary catheter (400). The lock cylinder (310) has a first half cylinder body (330) and a second half cylinder body (340) that can be selectively separated and clamped.

6. The fixing device according to claim 5, characterized in that A connecting plate (360) is arranged on the proximal end face of the first half cylinder body (330) and the proximal end face of the second half cylinder body (340). The connecting plate (360) is provided with a second hole (370) allowing the urinary catheter (400) to pass through.

7. The fixing device according to claim 6, characterized in that, The surface of the connecting plate (360) is provided with two sliding grooves arranged along the radial direction of the catheter (400), and the first half cylinder (330) and the second half cylinder (340) are slidably connected to the connecting plate (360) through the sliding grooves.

8. The fixing device according to claim 6, characterized in that, The surface of the locking cylinder (310) is provided with a push switch (320) for opening and closing the first half cylinder (330) and the second half cylinder (340). When the push switch (320) is pressed, the two half cylinders move away from each other to open the locking cylinder (310). When the push switch (320) is released, the two half cylinders move closer to each other to close the locking cylinder (310).

9. The fixing device according to claim 6, characterized in that, The proximal end of the decompression spring (200) is connected to the surface of the cover part (100) in a manner of avoiding the first hole (110), and the distal end of the decompression spring (200) is connected to the surface of the connecting plate (360) in a manner of avoiding the second hole (370).

10. The fixing device according to claim 9, characterized in that, The inner surfaces of the first half cylinder (330) and the second half cylinder (340) are provided with an anti-slip layer (350) for enhancing the friction between the two and the catheter (400).

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