External fixation urethral dilation stent for treating anterior urethrostenosis
By designing an external fixation urethral dilator, utilizing a guidewire channel and a urethral dilator tube with a pointed structure, combined with fixation sutures, the problem of unstable fixation in the treatment of urethral stricture was solved, improving treatment outcomes and quality of life.
Patent Information
- Application Number
- CN202422484237.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-14
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-14
AI Technical Summary
When treating anterior urethral stricture with existing urethral dilators and long-term indwelling catheters, the fixation is not secure, and they are prone to falling off, which affects the treatment effect, increases the risk of infection, and causes inconvenience to the patient's life.
An external fixation urethral dilator is designed, comprising a urethral dilator tube, a sheath core, and a gripper. It is easy to enter the urethra through a guide wire channel and a pointed structure, and is sutured with fixation sutures to achieve firm fixation.
It achieves stable fixation of the urethral dilation stent, reduces dislodgement, improves treatment efficacy, reduces the risk of infection, and enhances the patient's quality of life.
Smart Images
Figure CN223516500U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of medical auxiliary instrument, and specifically relates to a external fixed urethral dilatation support for treating anterior urethral stricture. BACKGROUND
[0002] Anterior urethral stricture is a common disease in urology, and is difficult to handle clinically, and is one of the common diseases that trouble urologists. At present, urethral dilatation is mainly used as the main treatment method in clinic to improve the symptoms of dysuria and prevent long-term complications. However, some recurrent anterior urethral strictures have poor urethral dilatation effect, and need long-term indwelling catheter or even indwelling cystostomy drainage.
[0003] The traditional urethral dilator dilatation method and long-term indwelling catheter or cystostomy tube require patients to regularly go to the hospital for urethral dilatation or replace the drainage tube, and also easily cause secondary urogenital system infection, which not only increases the pain of the patients, but also increases the economic burden of the patients.
[0004] In recent years, some scholars have used anterior urethral indwelling stent tubes to treat anterior urethral stricture and have achieved certain clinical effects. The common method for fixing the urethral stent tube is to fix the urethral stent tube traction line through adhesive tape or elastic restraint belt. The main problem of this method is that the fixation is not firm, and it is easy to fall off, and often cannot meet the requirements of the fixed time, and it will cause inconvenience to daily life. The above-mentioned anterior urethral stent tube design has defects in various aspects, so that the anterior urethral stent tube cannot be effectively fixed, which leads to early falling off and cannot achieve the expected dilatation effect.
[0005] Clinical practice has proved that how to effectively fix the urethral stent tube is the key factor affecting the treatment effect of the urethral stent tube. Therefore, designing a urethral stent tube and its fixing device which can firmly fix the urethral stent tube and does not affect the quality of life of the patient is the actual demand to be solved in clinical work. UTILITY MODEL CONTENTS
[0006] In order to overcome the above-mentioned shortcomings of the prior art, the utility model aims at providing a external fixed urethral dilatation support for treating anterior urethral stricture.
[0007] The utility model solves the technical problems by adopting the following technical scheme:
[0008] A external fixed urethral dilatation support for treating anterior urethral stricture, including urethral dilatation support tube, sheath core spare and holding piece,
[0009] The urethral dilatation support tube is sleeved on the sheath core spare, and the urethral dilatation support tube and the sheath core spare are relatively slidably connected, one end of the sheath core spare is in the shape of a sharp angle, and the other end is connected with the holding piece,
[0010] The sheath core member and the holding member are provided with a guide wire channel.
[0011] The urethral dilatation stent is provided with side holes.
[0012] Preferably, the guide wire channel comprises a sheath core guide wire channel provided on the sheath core member and a holding guide wire channel provided on the holding member.
[0013] Preferably, the sheath core guide wire channel is in a stepped shape, comprising a first guide wire channel and a second guide wire channel, the cross-sectional size of the first guide wire channel is smaller than that of the second guide wire channel, the first guide wire channel is provided at the pointed end of the sheath core member, the second guide wire channel is provided along the length direction of the sheath core member, one end of the second guide wire channel is communicated with the first guide wire channel, and the other end of the second guide wire channel is provided at the other end of the sheath core member.
[0014] Preferably, the channel opening of the first guide wire channel is provided at the center of the pointed end of the sheath core member.
[0015] Preferably, the pointed end of the sheath core member is in a conical structure.
[0016] Preferably, the holding member is provided with a connecting groove matched with the other end of the sheath core member, and the holding guide wire channel is communicated with the connecting groove.
[0017] Preferably, the holding member is provided with a handle part in a convex structure, and the top of the handle part is provided with a holding part in a convex structure.
[0018] Preferably, the number of the side holes is two and the side holes are symmetrically arranged.
[0019] Preferably, the material of the urethral dilatation stent and the sheath core member is polytetrafluoroethylene.
[0020] Compared with the prior art, the urethral dilatation stent has the following beneficial effects:
[0021] The urethral dilatation stent can realize convenient and fast operation, the guide wire channel can guide the sheath core member and the holding member to enter the dilatation position through the guide wire member, the pointed end of the sheath core member can also enter the dilatation position, and the gradually increasing cross-sectional area can dilate the urethra, and the structure of the holding member is convenient for the operator to guide and operate. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the premise of the drawings.
[0023] Figure 1 The figure is a use state diagram of the present application.
[0024] Figure 2 The figure is a structure exploded view of the present application.
[0025] Figure 3 The figure is a cross-sectional view of the holding piece of the present application.
[0026] Figure 4 The figure is a cross-sectional view of the sheath core piece of the present application.
[0027] Among them:
[0028] 1-urethral dilatation stent tube, 101-side hole;
[0029] 2-sheath core piece, 201-first guide wire channel, 202-second guide wire channel;
[0030] 3-holding piece, 301-holding guide wire channel, 302-connection groove, 303-handle part, 304-holding part;
[0031] 4-guide wire piece;
[0032] 5-reproductive organ. DETAILED DESCRIPTION
[0033] In order to more clearly illustrate the above-mentioned purposes, features and advantages of the present application, the following will describe the present application in detail in combination with the drawings and specific embodiments. It should be noted that the embodiments and features in the embodiments can be combined with each other without conflict. In the following description, a lot of specific details are described in order to fully understand the present application, and the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application.
[0035] Embodiment:
[0036] As shown in the embodiment, a urethral dilatation stent for treating anterior urethral stricture is provided, which comprises a urethral dilatation stent tube 1, a sheath core member 2 and a holding member 3. Figures 1-4 The urethral dilatation stent tube 1 is sleeved on the sheath core member 2, and the urethral dilatation stent tube 1 and the sheath core member 2 are in sliding fit. One end of the sheath core member 2 is in the shape of a sharp angle, and the other end is connected with the holding member 3.
[0037] The sheath core member 2 and the holding member 3 are provided with a guide wire channel.
[0038] The urethral dilatation stent tube 1 is provided with a side hole 101.
[0039] According to the structure of the above embodiment, the specific use scenario is as follows:
[0040] The patient is taken to lithotomy position, and the operation area is routinely disinfected and laid with a drape. After the surface of the genital organ 5 (model shown in FIG. 1) is anesthetized, the guide wire member 4 is inserted into the urethral orifice of the genital organ 5 of the patient and reaches the bladder from the urethra. The guide wire channel on the sheath core member 2 and the holding member 3 is matched with the guide wire member 4. The urethral dilatation stent tube 1, the sheath core member 2 and the holding member 3 are guided by the guide wire member 4, so that the sheath core member 2 and the urethral dilatation stent tube 1 enter the urethral orifice. The sheath core member 2 and the urethral dilatation stent tube 1 play a dilatation role, and then the sheath core member 2, the holding member 3 and the guide wire member 4 are withdrawn. Then, the fixing wire is passed through the side hole 101 and the genital organ 5 for suture fixation. The excess length of the urethral dilatation stent tube 1 can be cut.
[0041] The above structure can realize convenient and fast operation. The guide wire channel can facilitate the sheath core member 2 and the holding member 3 to enter the dilatation site guided by the guide wire member 4. The structure of the sharp angle at one end of the sheath core member 2 also facilitates the entry into the dilatation site, and the gradually increasing cross-sectional area plays a dilatation role. The structure of the holding member 3 facilitates the operator to guide the operation.
[0042] The guide wire channel of the embodiment specifically comprises a sheath core guide wire channel provided on the sheath core member 2 and a holding guide wire channel 301 provided on the holding member 3.
[0043] The sheath core guide wire channel is in the shape of a step, comprising a first guide wire channel 201 and a second guide wire channel 202. The cross-sectional size of the first guide wire channel 201 is smaller than that of the second guide wire channel 202. The first guide wire channel 201 is provided at the end of the sheath core member 2 in the shape of a sharp angle. The second guide wire channel 202 is provided along the length direction of the sheath core member 2. One end of the second guide wire channel 202 is communicated with the first guide wire channel 201, and the other end of the second guide wire channel 202 is provided at the other end of the sheath core member 2.
[0044] The above structure can realize convenient and fast operation. The guide wire channel can facilitate the sheath core member 2 and the holding member 3 to enter the dilatation site guided by the guide wire member 4. The structure of the sharp angle at one end of the sheath core member 2 also facilitates the entry into the dilatation site, and the gradually increasing cross-sectional area plays a dilatation role. The structure of the holding member 3 facilitates the operator to guide the operation.
[0045] Specifically, the channel opening of the first guide wire channel 201 is arranged at the center of the pointed end of the sheath core 2.
[0046] The first guide wire channel 201 and the second guide wire channel 202 are arranged concentrically with the axis of the sheath core 2 as the center, and the cross-sectional size of the second guide wire channel 202 is larger, so that the guide wire 4 can enter the sheath core 2 better, and then extend out from the center of the pointed end of the sheath core 2 through the first guide wire channel 201, thereby ensuring the guiding effect.
[0047] Meanwhile, the pointed end of the sheath core 2 in the embodiment is in a conical structure.
[0048] In the embodiment, the specific connection structure of the holding member 3 and the sheath core 2 is as follows:
[0049] The holding member 3 is provided with a connecting groove 302 matched with the other end of the sheath core 2, and the holding guide wire channel 301 is communicated with the connecting groove 302.
[0050] The specific structure of the holding member 3 is that the holding member 3 is provided with a handle part 303 in a convex structure, and the top of the handle part 303 is provided with a holding part 304 in a convex structure.
[0051] Meanwhile, the number of the side holes 101 is two and they are symmetrically arranged.
[0052] The material of the urethral dilatation stent tube 1 and the sheath core 2 is polytetrafluoroethylene. The above material provides the required strength of the urethral dilatation stent tube 1 and the sheath core 2, and also provides good tissue compatibility.
[0053] It should be noted that the fixing wire in the embodiment is Vicryl (polylactic acid 910), which uses the cutting of the suture on the tissue and the decomposition and absorption of the absorbable wire on the tissue, so that the urethral dilatation stent tube 1 is left for an average of about one month, and then naturally falls off, thereby ensuring the effectiveness of the urethral dilatation stent tube 1 and the continuity of the dilatation time.
[0054] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belongs to the scope of the technical scheme of the present application.
Claims
1. An external urethral dilation stent for treating anterior urethral stricture, characterized in that, The application relates to a urethral dilatation stent tube, a sheath core member and a holding member. The urethral dilatation stent tube is sleeved on the sheath core member, and the urethral dilatation stent tube and the sheath core member are in sliding fit; one end of the sheath core member is in a sharp corner shape, and the other end is connected with the holding member. A guide wire channel is arranged on the sheath core member and the holding member. A side hole is arranged on the urethral dilatation stent tube. The guide wire channel comprises a sheath core guide wire channel arranged on the sheath core member and a holding guide wire channel arranged on the holding member.
2. The external urethral dilation stent for treating pre-treatment urethral stricture according to claim 1, wherein, The sheath core guide wire channel is in a stepped shape and comprises a first guide wire channel and a second guide wire channel; the cross-sectional size of the first guide wire channel is smaller than that of the second guide wire channel; the first guide wire channel is arranged at the end of the sheath core member in a sharp corner shape; the second guide wire channel is arranged along the length direction of the sheath core member; one end of the second guide wire channel is communicated with the first guide wire channel; and the other end of the second guide wire channel is arranged at the other end of the sheath core member.
3. The external urethral dilation stent for treating pre-treatment urethral stricture according to claim 2, wherein, The channel port of the first guide wire channel is arranged at the center of the end of the sheath core member in a sharp corner shape.
4. The external urethral dilation stent for treating pre-treatment urethral stricture according to claim 3, wherein, The end of the sheath core member in a sharp corner shape is in a conical structure.
5. The external urethral dilation stent for treating anterior urethral stricture according to claim 1, wherein, The holding member is provided with a connecting groove matched with the other end of the sheath core member; and the holding guide wire channel is communicated with the connecting groove.
6. The external urethral dilation stent for treating pre-treatment urethral stricture according to claim 2, wherein, The holding member is provided with a handle part in a convex structure; and the top of the handle part is provided with a holding part in a convex structure.
7. The external urethral dilation stent for treating anterior urethral stricture according to claim 1, wherein, The number of the side holes is two and the side holes are symmetrically arranged.
8. The external urethral dilation stent for treatment of anterior urethral stricture according to claim 1, wherein, The material of the urethral dilatation stent tube and the sheath core member is polytetrafluoroethylene.
9. The external urethral dilation stent for treatment of anterior urethral stricture according to claim 1, wherein,