Urethral-imbedded bladder urethral anastomosis auxiliary instrument

Abstract

The invention discloses a transurethral-imbedded bladder urethral anastomosis auxiliary instrument which comprises an outer sleeve, a push-in rod and a puncture rod. The push-in rod is movably mounted on the back of the outer sleeve, and the puncture rod is fixedly mounted at the front end of the push-in rod; a plurality of through holes are formed in the side wall of the outer sleeve in a circumferential array mode, and guide cylinders are fixedly installed at the positions corresponding to the through holes. The push-in rod is controlled to move back and forth to control bending of the puncture rod, and the puncture rod extends through the through hole to puncture the urethra to the outside of the urethra. The suture line is carried to move synchronously through the puncture head arranged at the front end of the puncture rod, and the suture line passes through the puncture head and punctures the exterior of the urethra in a U-shaped mode; a plurality of guide cylinders arranged in a circumferential array and a puncture rod are simultaneously unfolded in an umbrella opening mode, and a suture line is pushed to the outside after passing through the urethra, so that medical staff can conveniently take the suture line sewn on the urethra for pulling the urethra and anastomosing the suture line with the bladder.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a transurethral bladder-urethral anastomosis auxiliary device. Background Technology

[0002] The current radical treatment for prostate cancer is prostatectomy. The prostate is located at the junction of the urethra and bladder in the male body. Prostatectomy is mostly performed laparoscopically. After prostatectomy, two stumps are formed between the urethra and bladder. In order not to affect the normal life of the patient after surgery and to ensure that the patient can urinate normally after surgery, the two stumps after prostatectomy need to be precisely sutured together. The suturing effect of the two stumps between the urethra and bladder is crucial.

[0003] During the suturing of the urethral and bladder stumps, skilled surgeons often perform direct suturing. However, less experienced surgeons may require the use of transurethral insertion of bladder-urethral anastomosis assistive devices for radical prostatectomy to aid the suturing process. Furthermore, the deep location of the urethra within the pelvis restricts suturing, making it more challenging. The anastomosis technique also relies heavily on the surgeon's skill, making the success of the anastomosis uncertain and increasing the risk of postoperative urinary leakage and stricture. Currently, there are corresponding assistive anastomosis devices available. For example, patent CN201481478U discloses a posterior urethral anastomosis guide. This device features a U-shaped groove at the tip of its head, located in the middle of the tip, with support arms forming on both sides. This avoids the drawbacks of using catheters or urethral probes for support, improving anastomosis efficiency, reducing operational difficulties, and ensuring the best anastomosis outcome. However, while the device uses a U-shaped groove to assist in the angle of needle insertion to solve the angle problem, it does not consider the issue of the suture thread passing through the urethra during the suturing process. The suture still needs to be performed manually with the assistance of the device; therefore, it still has some shortcomings.

[0004] Therefore, a transurethral bladder-urethral anastomosis assist device is needed to solve the above-mentioned technical problems. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention presents a transurethral bladder-urethral anastomosis assistive device. This device can directly open the internal sutured structure through the urethra in an "umbrella-like" manner, pushing the sutures outward after passing through the urethra. The sutures are also present in a U-shape on the urethra, allowing medical personnel to easily remove them for pulling the urethra and anastomosing it with the bladder. This effectively replaces the traditional method of suturing along the urethra, enabling simple and quick anastomosis between the urethra, located deep in the pelvis, and the bladder.

[0006] To achieve the above-mentioned technical effects, this invention discloses a transurethral bladder-urethral anastomosis auxiliary device, comprising: an outer sleeve, a push rod, and a puncture rod; the push rod is movably installed on the back of the outer sleeve, and the puncture rod is fixedly installed at the front end of the push rod; a plurality of through holes are circumferentially arranged on the side wall of the outer sleeve, and guide cylinders are fixedly installed at the positions corresponding to the through holes; the bending of the puncture rod is controlled by controlling the back-and-forth movement of the push rod, extending through the through holes to puncture the urethra to the outside of the urethra.

[0007] Furthermore, the puncture rod is made of an elastically deformable material;

[0008] Furthermore, a puncture head is symmetrically fixedly installed at the front end of the puncture rod, and a suture groove is opened on the outer side wall of the puncture head, with a suture outlet on the outer side of the suture groove; a suture thread is detachably installed on the suture groove.

[0009] Furthermore, the puncture head has a conical structure, and the two puncture heads are spaced apart from each other; at the same time, the groove has a double groove structure with grooves facing the tip and flat end of the puncture head.

[0010] Furthermore, a bearing head is fixedly provided at the front end of the push rod, and the piercing rod is fixedly installed on the bearing head. At the same time, guide blocks are symmetrically arranged on both sides of the bearing head; guide grooves are symmetrically opened on the inner side wall of the outer sleeve; the guide blocks are slidably installed on the guide grooves.

[0011] Furthermore, an insertion head is fixedly installed at the front end of the outer sleeve. The insertion head is made of medical silicone material. The guide cylinder inside the outer sleeve has an L-shaped structure and corresponds to the position of the puncture rod.

[0012] The beneficial effects of this invention are:

[0013] This invention designs a transurethral bladder-urethral anastomosis auxiliary device, comprising: an outer sleeve, a push rod, and a puncture rod; the push rod is movably mounted on the back of the outer sleeve, and the puncture rod is fixedly mounted on the front end of the push rod; a plurality of through holes are circumferentially arranged on the side wall of the outer sleeve, and guide cylinders are fixedly mounted at the positions corresponding to the through holes; the bending of the puncture rod is controlled by controlling the back-and-forth movement of the push rod, extending through the through holes to puncture the urethra to the outside of the urethra. Simultaneously, the puncture head at the front end of the puncture rod carries the suture and moves synchronously, puncturing the suture in a U-shape through the puncture head to the outside of the urethra. At the same time, multiple guide tubes arranged in a circumferential array and the puncture rod unfold simultaneously in an "umbrella-like" manner, pushing the suture outwards after passing through the urethra. This allows medical personnel to easily remove the sutures from the urethra for pulling and anastomosing with the bladder. This effectively replaces the traditional method of suturing within the urethra, enabling simple and quick anastomosis of the urethra, located deep in the pelvis, to the bladder. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of a transurethral bladder-urethral anastomosis auxiliary device;

[0016] Figure 2 This is a schematic diagram of the insertion head portion of a transurethral bladder-urethral anastomosis assist device.

[0017] Figure 3 An exploded view of a transurethral bladder-urethral anastomosis assist device;

[0018] Figure 4 This is a schematic diagram of the overall structure of the push rod of a transurethral bladder-urethral anastomosis auxiliary device;

[0019] Figure 5 This is a cross-sectional view of a transurethral bladder-urethral anastomosis assist device;

[0020] Figure 6 This is a magnified schematic diagram of part A of a transurethral bladder-urethral anastomosis assist device.

[0021] Figure 7 This is a partial structural diagram of the puncture rod of a transurethral bladder-urethral anastomosis auxiliary device.

[0022] Figure 8 This is a schematic diagram of a transurethral bladder-urethral anastomosis assistive device with sutures.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1-Outer sleeve, 11-Through hole, 12-Insertion head, 13-Guide tube, 14-Guide groove, 2-Push rod, 21-Bearing head, 211-Guide block, 22-Piercing rod, 221-Piercing head, 222-Thread groove, 223-Thread outlet, 3-Suture thread. Detailed Implementation

[0025] Example 1

[0026] A transurethral vesicourethral anastomosis assistive device includes: an outer sleeve 1, a push rod 2, and a puncture rod 22; the push rod 2 is movably mounted on the back of the outer sleeve 1, and the puncture rod 22 is fixedly mounted on the front end of the push rod 2; a plurality of through holes 11 are circumferentially arranged on the side wall of the outer sleeve 1; in this embodiment, in order to ensure that the position of the through holes 11 can be used for puncture in front of the urethra, the through holes 11 are spaced apart from the front end of the outer sleeve 1; at the same time, a guide cylinder 13 is fixedly installed at the position corresponding to the through holes 11; the bending of the puncture rod 22 is controlled by controlling the back-and-forth movement of the push rod 2 to extend through the through holes 11 and puncture the urethra to the outside of the urethra.

[0027] Meanwhile, in this embodiment, in order to ensure that the puncture rod 22 can deform smoothly and puncture outwards during use, the puncture rod 22 is made of an elastically deformable material; the elastically deformable material deforms it to puncture, and at the same time, it can be withdrawn in the same way after use; the elastically deformable material can be a shape memory alloy material.

[0028] Furthermore, the applicant's consideration for the aforementioned bladder-urethral anastomosis auxiliary device is to use a principle similar to "opening an umbrella" to insert sutures from the inside of the urethra to the outside, thereby addressing the problem of the urethra being located deep in the pelvis and its location limiting suturing. Initially, the applicant considered directly utilizing the structure of an umbrella to puncture the urethra; however, in the process of consideration, the principle of opening an umbrella is overlooked because it is an arc-shaped upward process, which would inevitably cause extensive damage to multiple openings in the urethra during puncture; therefore, it must be done by direct penetration. Therefore, in this embodiment, the bending of the puncture rod 22 is controlled by controlling the back-and-forth movement of the push rod 2, extending through the through hole 11 to puncture the urethra to the outside, and then the doctor directly pulls the suture 3 outside the urethra; this effectively eliminates the problem of suturing still required by traditional devices, allowing for simple and quick anastomosis between the urethra located deep in the pelvis and the bladder.

[0029] Example 2

[0030] In this embodiment, based on the puncture rod 22 described in Embodiment 1, puncture heads 221 are symmetrically fixedly installed at the front end of the puncture rod 22. A suture groove 222 is formed on the outer wall of the puncture head 221, and a suture outlet 223 is formed on the outer side of the suture groove 222. A suture 3 is detachably installed on the suture groove 222. The urethra can be punctured through the puncture head 221. To facilitate puncture, the puncture head 221 has a conical structure, and two puncture heads 221 are spaced apart. During use, the suture is pre-installed on the suture groove 222, and then pressed by the push rod 2. The puncture rod 22 will move along with the puncture head 221. Due to the presence of the guide tube 13, the puncture rod 22 will bend. Since the suture 3 is carried at the front end of the puncture head 221, the suture will puncture the urethra and extend to the outside. In this embodiment, the suture 3 must be inserted through the urethra at both ends before medical personnel can use it to pull the urethra and bladder together for suturing. It also needs to be smoothly introduced into the urethra during puncture. Therefore, the suture groove 222 is oriented towards the tip of the puncture head 221 and flat. The double-groove structure at the end; through the grooves, during use, the suture outside the puncture head 221 will fall into the groove at the flat end of the puncture head 221, and will not be dislodged by the puncture rod 22, ensuring that it can be smoothly inserted into the urethra. After reaching the urethra, the suture 3 is pulled out by medical staff (when pulled, the suture 3 is pulled out through the suture outlet 223); based on the push rod 2 mentioned above, in this embodiment, a bearing head 21 is fixedly provided at the front end of the push rod 2, and the puncture rod 22 is fixedly installed on the bearing head 21. At the same time, the two sides of the bearing head 21 are symmetrically arranged. A guide block 211 is provided; guide grooves 14 are symmetrically provided on the inner sidewall of the outer sleeve 1; the guide block 211 is slidably installed on the guide groove 14; since there are multiple guide cylinders 13, and multiple puncture rods 22 corresponding to the guide cylinders 13 are also provided, if the puncture rod 22 and the bearing head 21 are directly installed, they will rotate relative to each other, which will prevent the puncture rod 22 from smoothly entering the guide cylinder 13. Therefore, by providing the guide grooves 14 and guide blocks 211, the positions of the guide block 211 and the guide grooves 14 can be accurately aligned, facilitating insertion. At the same time, an insertion head 12 is also fixedly installed at the front end of the outer sleeve 1. The insertion head 12 is made of medical silicone material, which can effectively reduce damage to the urethra. The guide cylinder 13 inside the outer sleeve 1 has an L-shaped structure and corresponds to the position of the puncture rod 22.

[0031] The preferred embodiments of the present invention disclosed above are only for the purpose of illustrating the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation described.

Claims

1. A transurethral bladder-urethral anastomosis assist device, characterized in that, include: The device comprises an outer sleeve, an insertion rod, and a puncture rod; the insertion rod is movably mounted on the back of the outer sleeve, and the puncture rod is fixedly mounted on the front end of the insertion rod; several through holes are arranged in a circumferential array on the side wall of the outer sleeve, and guide cylinders are fixedly mounted at the corresponding positions of the through holes; the bending of the puncture rod is controlled by controlling the back-and-forth movement of the insertion rod, and the puncture rod extends through the through holes to puncture the urethra to the outside of the urethra.

2. The transurethral vesicourethral anastomosis assist device according to claim 1, characterized in that, The puncture rod is made of a material that can deform elastically.

3. The transurethral bladder-urethral anastomosis assist device according to claim 2, characterized in that, The puncture rod is symmetrically fixed with puncture heads at its front end. A suture groove is formed on the outer wall of the puncture head, and a suture outlet is formed on the outer side of the suture groove. A suture thread is detachably installed on the suture groove.

4. The transurethral vesicourethral anastomosis assist device according to claim 3, characterized in that, The puncture head has a conical structure, and the two puncture heads are spaced apart from each other; at the same time, the groove has a double groove structure with the tip and flat end of the puncture head.

5. The transurethral vesicourethral anastomosis assist device according to claim 1, characterized in that, The front end of the push rod is fixedly provided with a bearing head, and the piercing rod is fixedly installed on the bearing head. At the same time, guide blocks are symmetrically arranged on both sides of the bearing head. Guide grooves are symmetrically opened on the inner side wall of the outer sleeve. The guide blocks are slidably installed on the guide grooves.

6. The transurethral vesicourethral anastomosis assist device according to claim 1, characterized in that, The front end of the outer sleeve is also fixedly installed with an insertion head, which is made of medical silicone material. The guide cylinder inside the outer sleeve has an L-shaped structure and corresponds to the position of the puncture rod.

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