A urinary catheter with controllable bending head
By setting a wedge-shaped gap at the front end of the catheter and a pull cord at the tail end, and using a nylon rope to control the bending of the catheter, the problem of urethral bending and deformation caused by prostatic hyperplasia is solved, and the success rate of catheterization is improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HANGZHOU XIAOSHAN DISTRICT SECOND PEOPLES HOSPITAL
- Filing Date
- 2025-04-27
- Publication Date
- 2026-07-21
AI Technical Summary
Hyperplasia of the middle lobe of the prostate causes the distal urethra to bend and deform, making it difficult for a regular catheter to pass through, resulting in catheterization failure.
Design a catheter with controllable bending at the head. By setting a wedge-shaped gap at the front end and a puller at the tail end of the catheter, a nylon rope is used to connect a slider to the head end of the catheter. By sliding the slider and pulling the nylon rope, the head end of the catheter is bent towards the wedge-shaped gap, thus achieving controllable bending of the catheter.
This facilitates the passage of the catheter tip through the neck of the prostate gland, which is elevated due to prostatic hyperplasia, thus improving the success rate of catheterization.
Smart Images

Figure CN224523776U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a urinary catheter with a controllable bendable head. Background Technology
[0002] In most cases of urinary retention caused by benign prostatic hyperplasia (BPH), the difficulty in urination is not due to urethral stricture, but rather because the enlarged prostate compresses the urethra. This can be categorized into two types based on the location of the enlargement: one type is caused by enlargement and compression of the lateral lobes of the prostate, in which case catheterization is generally successful. The other type involves enlargement of the middle lobe of the prostate, leading to elevation of the prostate neck and bending and deformation of the distal urethra. This obstruction of the catheter at this point results in failure of conventional catheterization.
[0003] Therefore, this application designs a urinary catheter with controllable bending at the head to solve the problem that prostatic hyperplasia causes the neck to rise, leading to bending and deformation of the distal urethra, obstruction of the urinary catheter, and failure of ordinary urinary catheters. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides the following technical solution:
[0005] A urinary catheter with controllable bending at the head includes a urinary catheter and a nylon rope; the front end of the urinary catheter has several wedge-shaped gaps on one side, and a puller is detachably installed at the tail end of the urinary catheter; the puller includes an installation cylinder, on which a slider is slidably installed; the slider is detachably connected to the head end of the urinary catheter by the nylon rope, and by sliding the slider and pulling the nylon rope, the head end of the urinary catheter is pulled, causing the head end of the urinary catheter to bend towards the side with the wedge-shaped gaps.
[0006] Furthermore, the tip of the catheter is a solid structure, with a threading hole at the tip and an outlet hole at the rear. A thread passage is also formed within the wall of the catheter, passing through a wedge-shaped gap.
[0007] Furthermore, the nylon rope is detachably connected to the catheter tip by passing through the thread hole, and both ends of the nylon rope pass through the thread channel, exit through the thread hole, and are detachably connected to the slider.
[0008] Furthermore, a groove is provided on the mounting cylinder of the cable puller, the slider slides along the groove, a groove is provided on the slider, a clamping block is provided in the groove, and a small hole is provided on one side of the slider, the small hole passes through the groove, the clamping block is detachably installed in the groove by bolts, the nylon rope passes through the small hole and is clamped and fixed on the slider by the clamping block.
[0009] Furthermore, a handle is fixedly mounted on the slider.
[0010] Furthermore, a catheterization port is provided on the outer side of the tip of the catheter.
[0011] Furthermore, the front end of the catheter is provided with a shielding layer corresponding to the wedge-shaped gap, covering several wedge-shaped gaps.
[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:
[0013] This invention features several wedge-shaped gaps on one side of the front end of a urinary catheter, and a puller detachably installed at the tail end of the catheter. The slider of the puller is detachably connected to the head end of the catheter via a nylon rope. By sliding the slider and pulling the nylon rope, the head end of the catheter is pulled, causing it to bend towards the side with the wedge-shaped gaps, making it easier for the head end of the catheter to pass through the neck of the prostate gland when it is hyperplastic. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the bottom structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the top structure of this utility model;
[0016] Figure 3 This is an enlarged schematic diagram of point A on the top structure of this utility model;
[0017] Figure 4 This is a cross-sectional structural diagram of the present invention;
[0018] Figure 5 This is an enlarged schematic diagram of section B of the cross-sectional structure of this utility model;
[0019] Figure 6 This is an enlarged schematic diagram of section D of the cross-sectional structure of this utility model;
[0020] Figure 7 This is a schematic diagram of the straightened top structure of the urinary catheter of this utility model;
[0021] Figure 8 This is a schematic diagram of the structure of the pull wire device of this utility model.
[0022] In the diagram: urinary catheter-1, urinary catheter hole-11, wedge-shaped gap-12, thread hole-13, thread outlet hole-14, thread passage-15, puller-2, slide groove-21, slider-22, small hole-221, handle-222, clamp-23, bolt-24, nylon rope-3. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Example:
[0025] Please see Figure 1-8 A urinary catheter 1 with controllable bending at the head includes a urinary catheter 1 and a nylon rope 3; a plurality of wedge-shaped gaps 12 are provided on one side of the front end of the urinary catheter 1, and a puller 2 is detachably provided at the tail end of the urinary catheter 1; the puller 2 includes an installation cylinder, on which a slider 22 is slidably provided; the slider 22 is detachably connected to the head end of the urinary catheter 1 by the nylon rope 3, and the head end of the urinary catheter 1 is pulled by sliding the slider 22, so that the head end of the urinary catheter 1 bends toward the side with the wedge-shaped gaps 12;
[0026] In this embodiment, the catheter 1 has a thread hole 13 at its tip, a thread outlet hole 14 at its rear, and a thread passage 15 inside the wall of the catheter 1; the nylon rope 3 is detachably connected to the tip of the catheter 1 by passing through the thread hole, and both ends of the nylon rope 3 pass through the thread passage 15, exit through the thread outlet hole 14, and are detachably connected to the slider 22.
[0027] In this embodiment, the mounting cylinder of the puller 2 has a groove 21, the slider 22 slides along the groove 21, the slider 22 has a groove, a clamping block 23 is provided in the groove, and a small hole 221 is provided on one side of the slider 22, the small hole 221 passes through the groove, the clamping block 23 is detachably installed in the groove by bolts 24, the nylon rope 3 passes through the small hole 221 and is clamped and fixed on the slider 22 by the clamping block 23; a handle 222 is fixedly provided on the slider 22; a catheter hole 11 is provided on the outer side of the tip of the catheter 1;
[0028] In this embodiment, several wedge-shaped gaps 12 are opened on one side of the front end of the catheter 1, and a puller 2 is detachably installed at the tail end of the catheter 1. The slider 22 of the puller 2 is detachably connected to the head end of the catheter 1 by a nylon rope 3. By sliding the slider 22, the nylon rope 3 is pulled, and the head end of the catheter 1 is pulled, so that the head end of the catheter 1 bends toward the side where the wedge-shaped gaps 12 are opened, so that the head end of the catheter 1 can pass through the neck of the prostate gland that is raised during the hyperplasia of the middle lobe of the prostate better.
[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A urinary catheter with a controllable bendable head, comprising a urinary catheter and a nylon rope, characterized in that, The catheter has several wedge-shaped gaps on one side of its front end, and a puller is detachably installed at the tail end of the catheter. The puller includes an installation cylinder with a slider slidably mounted on it. The slider is detachably connected to the catheter tip by a nylon rope. By sliding the slider and pulling the nylon rope, the catheter tip is pulled and bent towards the side with the wedge-shaped gaps.
2. The urinary catheter with controllable head bending according to claim 1, characterized in that, The catheter has a threading hole at the tip, an exit hole at the rear, and a thread passage inside the catheter wall.
3. The urinary catheter with controllable head bending according to claim 2, characterized in that, The nylon rope is detachably connected to the catheter tip by passing through the thread hole. Both ends of the nylon rope pass through the thread channel, exit through the thread hole, and are detachably connected to the slider.
4. The urinary catheter with controllable head bending according to claim 1, characterized in that, The mounting cylinder of the cable puller has a groove, the slider slides along the groove, the slider has a groove, a clamping block is provided in the groove, and a small hole is provided on one side of the slider, the small hole passes through the groove, the clamping block is detachably installed in the groove by bolts, the nylon rope passes through the small hole and is clamped and fixed on the slider by the clamping block.
5. The urinary catheter with controllable head bending according to claim 1, characterized in that, A handle is fixedly mounted on the slider.
6. The urinary catheter with controllable head bending according to claim 1, characterized in that, A catheterization port is provided on the outer side of the tip of the catheter.