A urethral-bladder neck anastomosis device for radical prostatectomy

Abstract

This invention relates to a urethral-bladder neck anastomosis device for radical prostatectomy, comprising a rigid cannula and a needle exit component disposed within the rigid cannula. Through the needle exit component, the rigid cannula is inserted into the urethra during urethral-bladder suturing. The needle is then advanced through the cannula and exits, piercing the urethra. The surgeon can then directly remove the needle and begin suturing externally, resulting in higher operational efficiency. Furthermore, the even distribution of multiple needles ensures that all necessary suturing points are simultaneously exited from the urethra at the start of suturing, leading to uniform needle distribution during subsequent suturing and further improving surgical efficiency.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically a urethral-bladder neck anastomosis device for radical prostatectomy. Background Technology

[0002] Radical prostatectomy is the standard surgical procedure for treating localized prostate cancer, primarily including laparoscopic radical prostatectomy and robot-assisted radical prostatectomy. The surgery requires complete removal of the prostate and seminal vesicles, followed by precise anastomosis of the urethral stump to the bladder neck to reconstruct the continuity of the lower urinary tract. In traditional anastomosis, a catheter is inserted into the bladder via the urethra, and a water-filled balloon is used to fix the catheter and open the urethral stump. The surgeon then uses a needle holder under laparoscopic guidance to hold absorbable sutures and sutures the bladder neck mucosa to the urethral mucosa layer by layer using interrupted or continuous sutures.

[0003] However, because the urethral stump is located deep in the pelvic floor and a funnel-shaped opening is formed after the bladder neck is removed, the surgeon needs to complete a complex suturing path of "inward from outside and outward from inside" in a narrow surgical field.

[0004] Specifically, each suture requires the needle to first enter from the outer surface of the bladder neck, penetrate the full thickness, and exit from the bladder cavity. It then turns towards the outer wall of the urethral stump, enters again, and exits from the urethral cavity, finally tying a knot inside the cavity. This procedure requires the surgeon to precisely control the suture angle in three-dimensional space and avoid suture entanglement, resulting in a longer single-needle suture time. This, in turn, prolongs the overall anastomosis time, increases the surgeon's error rate, and can easily lead to technical problems such as postoperative anastomotic leakage due to uneven suture tension or mucosal misalignment. Utility Model Content

[0005] To solve the above problems, this utility model provides the following technical solution:

[0006] Radical prostatectomy using a urethral-bladder neck anastomosis device includes:

[0007] Rigid sleeve;

[0008] The needle delivery assembly includes a plurality of suture needles evenly disposed inside a rigid cannula, a propulsion part capable of propelling the suture needles within the rigid cannula, and a guide part disposed inside the rigid cannula. The surface of the rigid cannula is provided with an opening for the suture needles to pass through the rigid cannula. The guide part can guide the suture needles from the opening to the outside of the rigid cannula and puncture the urethra when the propulsion part propels the suture needles within the rigid cannula.

[0009] After the suture needle passes through the opening, the operator can remove the suture needle directly from the rigid cannula.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the propulsion unit includes a propulsion rod disposed inside the rigid sleeve, a support member disposed on the surface of the propulsion rod for supporting the suture needle, and a pusher member disposed at the end of the propulsion rod.

[0012] Furthermore, the end of the support near the suture needle is made of a permanent magnet material.

[0013] Furthermore, the support member is generally columnar in shape, and the end of the support member is provided with a limiting groove for placing a suture needle.

[0014] Furthermore, the guide portion includes a fixing cap located at the end of the rigid sleeve, and a guide post located on the surface of the fixing cap that can extend into the interior of the rigid sleeve. The guide post has an arc surface on its end near the push rod that can contact the suture needle, and the fixing cap has a tapered structure at its end away from the rigid sleeve.

[0015] Furthermore, the surface of the support member is provided with a limiting protrusion, and the interior of the rigid sleeve is provided with a movable groove that matches the limiting protrusion.

[0016] Furthermore, the surface of the suture needle is provided with a suture thread, and the interior of the rigid sleeve is provided with a through groove for the suture thread to extend from the end of the support to the outside of the rigid sleeve.

[0017] Furthermore, the surface of the push rod is provided with a locking ring that restricts the push rod from moving into the rigid sleeve, and the locking ring can be removed from the push rod.

[0018] Furthermore, the stitching can extend to the position between the locking ring and the push rod.

[0019] Furthermore, the push rod extends to the outside of the support member, and the guide post surface is provided with a slot adapted to the push rod.

[0020] Beneficial effects

[0021] Compared with the prior art, this utility model, through its designed needle delivery component, allows a rigid cannula to be inserted into the urethra during urethral and bladder suturing. Finally, the suture needle is guided through the rigid cannula by the advancement part and eventually exits through the rigid cannula, piercing the urethra. At this point, the doctor can directly remove the suture needle and begin suturing directly on the outside of the urethra, resulting in higher operational efficiency. At the same time, due to the even arrangement of multiple suture needles, all the suture needles required for suturing can be simultaneously exited from the urethra at the beginning of suturing, ensuring even distribution of stitches during subsequent suturing and effectively improving surgical efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the orthographic section of the utility model.

[0024] Figure 2 This is a schematic diagram of the orthographic section of the utility model.

[0025] Figure 3 This is a schematic diagram of the top section structure of the utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the propulsion part of the utility model;

[0027] Figure 5 This is a three-dimensional structural schematic diagram of one embodiment of the locking ring of the utility model;

[0028] Figure 6 For utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0029] Figure 7 For utility model Figure 2 Enlarged structural diagram at point B;

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 1. Rigid sleeve; 2. Needle delivery assembly; 21. Suture needle; 22. Propulsion part; 221. Propulsion rod; 222. Support component; 223. Pushing component; 224. Limiting protrusion; 23. Guide part; 231. Fixing cover; 232. Guide post; 3. Locking ring; 4. Suture thread. Detailed Implementation

[0032] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0033] 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 this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the technical product is in use. They are only for the convenience of describing the technology and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the technology.

[0036] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] Please see Figure 1-7 A urethral-bladder neck anastomosis device for radical prostatectomy includes a rigid cannula 1 and a needle delivery assembly 2 disposed within the rigid cannula 1.

[0038] The needle delivery assembly 2 includes a plurality of suture needles 21 evenly disposed inside the rigid sheath 1, a propulsion part 22 capable of pushing the suture needles 21 to move inside the rigid sheath 1, and a guide part 23 disposed inside the rigid sheath 1. The surface of the rigid sheath 1 is provided with an opening for the suture needles 21 to pass through the rigid sheath 1. The guide part 23 can guide the suture needles 21 from the opening to the outside of the rigid sheath 1 and puncture the urethra when the propulsion part 22 pushes the suture needles 21 to move inside the rigid sheath 1.

[0039] Meanwhile, to facilitate subsequent suturing, after the suture needle 21 passes through the opening, the operator can directly remove the suture needle 21 from the rigid cannula 1. To achieve the above function, the propulsion part 22 includes a propulsion rod 221 located inside the rigid cannula 1, a support member 222 located on the surface of the propulsion rod 221 for supporting the suture needle 21, and a pusher member 223 located at the end of the propulsion rod 221. The end of the support member 222 near the suture needle 21 is made of permanent magnet material, which can magnetically attract the suture needle 21 to the support member 222.

[0040] As shown in the figure, in order to facilitate the placement of multiple suture needles 21 on the support member 222, the support member 222 is generally cylindrical, and the end of the support member 222 is provided with a limiting groove for placing the suture needles 21.

[0041] In some embodiments, the guide portion 23 includes a fixing cap 231 disposed at the end of the rigid sleeve 1, and a guide post 232 disposed on the surface of the fixing cap 231 that can extend into the interior of the rigid sleeve 1. The guide post 232 has an arc surface on the end surface near the push rod 221 that can contact the suture needle 21. The fixing cap 231 has a tapered structure at the end away from the rigid sleeve 1, so as to facilitate the suture needle 21 that is subsequently inserted into the urethra from inside the bladder to continue to exit the urethra.

[0042] To prevent the needle from getting stuck, the surface of the support member 222 is provided with a limiting protrusion 224, and the interior of the rigid sleeve 1 is provided with a movable groove that matches the limiting protrusion 224.

[0043] Considering the subsequent cooperation between the suture needle 21 and the suture 4, the rigid sleeve 1 is provided with a through groove for the suture 4 to extend from the end of the support member 222 to the outside of the rigid sleeve 1, so as to avoid the suture 4 on multiple suture needles 21 from getting tangled together.

[0044] In other embodiments, to avoid misoperation before use, the surface of the push rod 221 is provided with a locking ring 3 to restrict the push rod 221 from moving into the rigid sleeve 1. The locking ring 3 can be removed from the push rod 221. The locking ring 3 can be connected to the push rod 221 by threads or by a slot structure as shown in the figure. The suture 4 can extend to the position between the locking ring 3 and the push rod 221. The locking ring 3 locks the suture 4. In order to separate multiple suture needles 21, the push rod 221 extends to the outside of the support member 222. The surface of the guide post 232 is provided with a slot that matches the push rod 221.

[0045] In the description of this technology, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A urethral bladder neck anastomosis device for radical prostatectomy, characterized by, include: Rigid sleeve (1); The needle delivery assembly (2) includes a plurality of suture needles (21) evenly disposed inside the rigid sheath (1), a propulsion part (22) capable of pushing the suture needles (21) to move inside the rigid sheath (1), and a guide part (23) disposed inside the rigid sheath (1). The surface of the rigid sheath (1) is provided with an opening for the suture needles (21) to pass through the rigid sheath (1). When the propulsion part (22) pushes the suture needles (21) to move inside the rigid sheath (1), the guide part (23) can guide the suture needles (21) from the opening to the outside of the rigid sheath (1) and puncture the urethra. After the suture needle (21) passes through the opening, the operator can remove the suture needle (21) directly from the rigid cannula (1).

2. The urethral-carcinoma neovagina anastomat according to claim 1, characterized in that: The propulsion part (22) includes a propulsion rod (221) disposed inside the rigid sleeve (1), a support member (222) disposed on the surface of the propulsion rod (221) for supporting the suture needle (21), and a pusher member (223) disposed at the end of the propulsion rod (221).

3. The urethral-carcinoma neovagina anastomat according to claim 2, characterized in that: The end of the support (222) near the suture needle (21) is made of permanent magnet material.

4. The urethral-carcinoma neovagina anastomat according to claim 2, characterized in that: The support member (222) is in the form of a columnar structure, and the end of the support member (222) is provided with a limiting groove for placing a suture needle (21).

5. The urethral-carcass anastomosis device according to claim 1, characterized in that: The guide portion (23) includes a fixing cap (231) located at the end of the rigid sleeve (1) and a guide post (232) located on the surface of the fixing cap (231) that can extend into the interior of the rigid sleeve (1). The guide post (232) has an arc surface on the end near the push rod (221) that can contact the suture needle (21). The fixing cap (231) has a tapered structure at the end away from the rigid sleeve (1).

6. The urethral-carcinoma neovagina anastomat according to claim 2, characterized in that: The support member (222) has a limiting protrusion (224) on its surface, and the rigid sleeve (1) has an active groove inside that matches the limiting protrusion (224).

7. The urethral-carcinoma neck anastomat according to claim 2, characterized in that: The suture needle (21) has a suture thread (4) on its surface, and the rigid sleeve (1) has a through groove inside for the suture thread (4) to extend from the end of the support (222) to the outside of the rigid sleeve (1).

8. The urethral-carcinoma neck anastomat according to claim 2, characterized in that: The surface of the push rod (221) is provided with a locking ring (3) to restrict the push rod (221) from moving into the rigid sleeve (1), and the locking ring (3) can be removed from the push rod (221).

9. The urethral-carcinoma neovagina anastomat according to claim 7, characterized in that: The suture (4) can extend to the position between the locking ring (3) and the push rod (221).

10. The urethral-carcinoma neovagina anastomat according to claim 2, characterized in that: The push rod (221) extends to the outside of the support (222), and the surface of the guide post (232) is provided with a slot that is compatible with the push rod (221).

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