Urethral bladder anastomosis auxiliary device

Abstract

The invention relates to medical instruments, in particular to a urethral bladder anastomosis auxiliary device which is characterized by comprising an intubation tube, an elastic rod, a suture line and a suture needle. An even number of channels distributed around the axis of the cannula are arranged in the cannula, each channel comprises a push-in section and a piercing section which are communicated with each other, and an opening, far away from the push-in section, of the piercing section penetrates through the end face, far away from the push-in section, of the cannula; one elastic rod is arranged in each channel; the suture needles are arc-shaped, and the piercing sections are in one-to-one correspondence with the suture needles; the suture needles are located in the piercing section in an initial state, every two suture needles form a group, and the tail ends of the two suture needles in the same group are connected through a suture line; and the elastic rod can push the suture needle out of the piercing section. The urethra and the bladder can be sutured, and the suturing precision and efficiency are improved.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and in particular relates to a urethra-vesical anastomosis auxiliary device. Background Art

[0002] Laparoscopic surgery has been widely used in the field of urology due to its advantages of minimal trauma, rapid recovery, and few complications. Laparoscopic radical prostatectomy is the most successful example of minimally invasive surgery, but it is also one of the most technically challenging surgeries. Urethrocystostomy is one of the most time-consuming, labor-intensive, and difficult steps in laparoscopic radical prostatectomy, and is one of the main limitations on the development of this technique.

[0003] Traditional laparoscopic urethrocystostomy uses a six-stitch method. Generally, a single stitch is placed at the 3 o'clock position of the bladder anastomosis, from the outside to the inside, and then tied. Then, starting at the 3 o'clock position, the bladder is sutured counterclockwise from the outside to the inside. The corresponding position of the urethra is then sutured from the inside to the outside, and the posterior wall of the anastomosis is sutured continuously (a total of six stitches). After the posterior wall of the anastomosis is sutured, the anterior wall of the anastomosis is sutured continuously, and finally, the thread left after the first knot is tied to the bladder wall.

[0004] Due to the complex anatomical structure of the urethra and bladder and the delicate suturing techniques involved, the core of laparoscopic technology lies in performing complex surgical operations through tiny operating holes. This places high technical requirements on the surgeon, especially when it comes to delicate anatomy and complex anastomosis operations. Ultimately, traditional laparoscopic surgery is difficult. Therefore, there is an urgent need for a medical device that can reduce the difficulty of suturing the urethra and bladder. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a urethra-vesical anastomosis auxiliary device in view of the difficulty of existing laparoscopic surgery.

[0006] To solve the above problems, an embodiment of the present invention provides a urethra-vesical anastomosis auxiliary device, comprising a cannula, an elastic rod, a suture thread and a suture needle; An even number of channels are provided in the cannula and are distributed around the axis of the cannula. The channels include a push section and a piercing section that are connected. The opening of the piercing section away from the push section passes through the end surface of the cannula away from the push section. An elastic rod is provided in each of the channels; The suturing needle is arc-shaped, and the insertion section corresponds to the suturing needle one by one; the suturing needle is located in the insertion section in the initial state, and each two suturing needles form a group, and the tail ends of the two suturing needles in the same group are connected by a suture thread; The elastic rod can push the suture needle out of the piercing section.

[0007] Optionally, the piercing section extends along a preset arc, and includes a receiving section and a twisting section, wherein the receiving section is connected between the twisting section and the pushing section, and an end of the twisting section away from the receiving section is opened and passes through the end surface of the cannula away from the pushing section; The suture needle is placed in the accommodating section in an initial state, the inner holes of the accommodating section and the torsion section are adapted to the shape of the suture needle, and the suture needle rotates by a preset angle relative to the initial state after entering the torsion section and before leaving the torsion section.

[0008] Optionally, the preset angle is 170°-190°.

[0009] Optionally, the angle of the preset axis is 55°-65°.

[0010] Optionally, the suture needle includes a pointed needle and an end portion, the end portion is square-shaped, the cross-section of the torsion section is rectangular, and gaps are set between the side walls of the end portion and the inner wall of the torsion section so that the suture needle slides in the torsion section; the pointed needle includes a tip and a main body section, the cross-section of the main body section is circular, and the connection between the end portion and the pointed needle has a smooth transition.

[0011] Optionally, it further comprises a push rod and a push buckle, wherein the push rod is built into the side of the pushing section close to the head end of the cannula, and the push buckle is connected to the push rod; The cannula is provided with a plurality of limiting grooves extending along the length direction of the cannula, the limiting grooves communicating with the pushing section and the outside world, the push buckle extending from the limiting grooves, and the push buckle sliding in the limiting grooves.

[0012] Optionally, a wire groove is provided on the end surface of the cannula close to the puncture section, the wire groove connects two adjacent channels, and the wire groove is used to accommodate a suture.

[0013] Optionally, a trachea is provided in the cannula, and an airbag is provided at one end of the cannula close to the puncture section, the airbag is connected to the trachea, and the airbag is used to temporarily fix the cannula in the urethra.

[0014] Optionally, an introduction block is fixed to one end of the cannula close to the puncture section, the cross section of the introduction block gradually decreases in the direction away from the cannula, and one end of the puncture section extends to the introduction block.

[0015] Optionally, six of the elastic rods, suturing needles and channels are provided, and each elastic rod, each suturing needle and each channel corresponds to each other. There are three suture threads.

[0016] An embodiment of the present invention provides a urethra-vesical anastomosis auxiliary device, which allows the suture needle to pass through the cannula and twist it so that the suture needle can pierce the urethra, thereby simplifying the suturing operation, improving the suturing accuracy and reducing the suturing difficulty, and facilitating the completion of urethra-vesical segment anastomosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 1 is a schematic diagram of the overall structure of a urethra-vesical anastomosis auxiliary device provided in one embodiment of the present invention; Figure 2 is an overall perspective schematic diagram of a urethra-vesical anastomosis auxiliary device provided in one embodiment of the present invention; Figure 3 is a schematic diagram of a materialized rendering of a channel of a urethrocystostomy auxiliary device provided in one embodiment of the present invention; Figure 4 Schematic diagram of the structure of a suture needle and suture thread of a urethrocystostomy auxiliary device provided in one embodiment of the present invention; Figure 5 Schematic diagram of the position of the trachea of the urethrocystostomy auxiliary device provided in one embodiment of the present invention; Figure 6 This is a schematic diagram of a first state in which the suture needle of the urethrocystostomy auxiliary device provided in one embodiment of the present invention passes through the cannula; Figure 7 2. It is a schematic diagram of a second state in which the suture needle of the urethrocystostomy auxiliary device provided in one embodiment of the present invention passes through the cannula; Figure 8 3. This is a schematic diagram of a third state of the urethrocystostomy auxiliary device provided in one embodiment of the present invention, in which the suture needle passes through the cannula; Figure 9 2 is a schematic diagram of a fourth state of the urethrocystostomy auxiliary device provided in one embodiment of the present invention, in which the suture needle passes through the cannula; Figure 10 2 is a schematic diagram of a fifth state of the urethrocystostomy auxiliary device provided in one embodiment of the present invention, in which the suture needle passes through the cannula; Figure 11 Schematic diagram of the use of the urethra-vesical anastomosis auxiliary device provided in one embodiment of the present invention.

[0019] The reference numerals in the specification are as follows: 100, urethra; 200, bladder; 1. Cannula; 11. Channel; 12. Limiting groove; 13. Wire groove; 14. Introduction block; 2. Elastic rod; 3. Suture thread; 4. Suture needle; 41. Pointed needle; 411. Main body; 412. Tip; 42. End; 5. Push rod; 6. Push buckle; 7. Airbag; 8. Trachea. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] like Figures 1 to 10 As shown, an embodiment of the present invention provides a urethra-vesical anastomosis auxiliary device, referring to Figure 1 and Figure 2 , including a cannula 1, an elastic rod 2, a suture thread 3 and a suture needle 4. An even number of channels 11 are arranged in the cannula 1 and distributed around the axis of the cannula 1, referring to Figure 2 and Figure 3The channel 11 includes a connected pushing section and a piercing section, and the opening of the piercing section away from the pushing section passes through the end face of the cannula 1 away from the pushing section; an elastic rod 2 is arranged in each channel 11; the suture needle 4 is arc-shaped, and the piercing section corresponds to the suture needle 4 one by one; the suture needle 4 is located in the piercing section in the initial state, and each two suture needles 4 form a group, and the tail ends of the two suture needles 4 in the same group are connected by a suture thread 3; the elastic rod 2 can push the suture needle 4 out of the piercing section.

[0024] During the operation, the assistant places the device into the posterior urethra 100 from the external opening of the urethra 100. When the urethrocystostomy auxiliary device is in the initial state, the suture needle 4 is located in the puncture section, and the elastic rod 2 is located in the pushing section. Under the action of external force, one of the elastic rods 2 is pushed, and the elastic rod 2 drives the suture needle 4 to gradually penetrate the posterior urethra 100 from the puncture section and penetrate from the mucosal layer of the bladder 200 neck to the serosal layer. Then, the other elastic rod 2 is pushed, so that the suture needle 4 in the same group gradually penetrates the posterior urethra 100 after the puncture section and penetrates from the mucosal layer of the bladder 200 neck to the serosal layer. Then, the suture thread 3 corresponding to the suture needle 4 of the same group is knotted. This operation is repeated many times until the suture needles 4 of all groups complete the puncture and all the suture threads 3 are knotted, and the anastomosis of the urethra 100 and the bladder 200 sections is completed.

[0025] The elastic rod 2 in this embodiment is a spring. When the elastic rod 2 enters the accommodating section from the pushing section, the elasticity of the elastic rod 2 itself can ensure that it slides back and forth along a preset arc in the accommodating section.

[0026] Reference Figure 2 and Figure 3 , Figure 2 The figure is a schematic diagram of the physical outline of the six channels 11, which is used to show the path changes and rectangular cross-sections of the channels 11. In this embodiment, the puncture section extends along a preset arc, wherein the preset arc is a circular arc. The puncture section includes a receiving section and a torsion section. The receiving section is connected between the torsion section and the pushing section. The end of the torsion section away from the receiving section opens and passes through the end face of the cannula 1 away from the pushing section. The receiving section is used to receive the suture needle 4 in the initial state.

[0027] In the initial state, the suturing needle 4 is placed in the receiving section. The inner holes of the receiving section and the twisting section are adapted to the shape of the suturing needle 4. After entering the twisting section and before leaving the twisting section, the suturing needle 4 rotates by a preset angle relative to the initial state. The twisting section is used to drive the suturing needle 4 to rotate during the process of passing the suturing needle 4 through the cannula 1.

[0028] Reference Figures 6 to 10 , Figures 6 to 10This is a diagram showing the process of the suture needle 4 gradually passing through the cannula 1 and twisting. The twisting in this embodiment can be explained as follows: the cross-section of the twisting section is rectangular, a preset arc passes through the intersection of the diagonals of the cross-section of the twisting section, the intersection of the diagonals of the cross-section of the twisting section is defined as the rotation center of the cross-section, the cross-section where the accommodating section and the twisting section intersect is defined as the starting cross-section of the twisting section, the cross-section of the twisting section away from the accommodating section is defined as the ending cross-section, and the direction from the starting cross-section to the ending cross-section of the twisting section is from front to back. Located between the starting cross-section and the ending cross-section and from front to back (i.e., along the direction from the accommodating section to the twisting section), the latter cross-section of the twisting section rotates relative to the former cross-section about the rotation center, so that all cross-sections of the twisting section rotate continuously from front to back.

[0029] For example: taking the starting cross section as a reference, from front to back, the cross section of the torsion segment adjacent to the starting cross section rotates 1 degree counterclockwise around its rotation center relative to the starting cross section, and the cross section of the torsion segment next to the starting cross section also rotates 1 degree counterclockwise around its rotation center relative to the cross section of the torsion segment adjacent to the starting cross section. The subsequent cross sections of the torsion segment rotate 1 degree counterclockwise around their respective rotation centers compared to the previous cross section, until the ending cross section rotates 1 degree counterclockwise around its rotation center compared to the previous cross section. At this time, if there are 180 cross sections of the torsion segment, the ending cross section rotates 180 degrees compared to the starting cross section, and the 180-degree rotation at this time is the preset angle.

[0030] To enhance understanding, in this embodiment, the cross-sections of the torsion section and the accommodating section are rectangular. In the accommodating section, the cross-section of the accommodating section is rectangular, and the cross-section has four vertices. The vertices of all the cross-sections are on the same arc, and the curvature of the arc is the same as the preset arc, constituting the edge of the accommodating section; in the torsion section, the cross-section of the torsion section is rectangular, and the cross-section of the torsion section also has four vertices. Taking one group of vertices as an example, this group of vertices is distributed in a spiral line, rather than the arc edge in the torsion section.

[0031] That is, if the torsion segment does not twist, the vertex of the starting cross section and the vertex of the ending cross section are on the same arc, and the curvature of the same arc and the preset arc are the same; but because the torsion segment is twisted, the ending cross section rotates around its rotation center relative to the starting cross section, and the rotation angle of the ending cross section relative to the starting cross section is the preset angle, which is the angle by which the ending cross section rotates relative to the starting cross section.

[0032] In one embodiment, the preset angle is 170°-190°. Optimally, the preset angle occurs before the suture needle 4 is pushed out, and the suture needle 4 completes a 180° rotation in the channel 11. This rotation is to facilitate the needle holding of instruments under laparoscopy and to avoid damage to the pelvic floor tissue caused by excessive suturing.

[0033] In one embodiment, the angle of the preset axis is 55°-65°.

[0034] Reference Figure 4 In one embodiment, the suture needle 4 includes a sharp needle 41 and an end 42, the end 42 is square-shaped, the cross-section of the torsion section is rectangular, and gaps are set between the side walls of the end 42 and the inner wall of the torsion section so that the suture needle 4 slides in the torsion section; the sharp needle 41 includes a tip 412 and a main body section, the cross-section of the main body section is circular, and the connection between the end 42 and the sharp needle 41 is smoothly transitioned.

[0035] In this embodiment, the cross-section of the end 42 is also rectangular and in the shape of a square. When the suture needle 4 is pushed by the elastic member, it is mainly the end 42 that cooperates with the channel 11 to limit the suture needle 4 from rotating arbitrarily; at the same time, the end 42 cooperates with the channel 11 to limit the suture needle 4 from rotating at a preset angle within the torsion section, so as to ensure the above-mentioned effect of facilitating the holding of the needle by instruments under laparoscopy.

[0036] Reference Figure 2 and Figure 5 In one embodiment, the urethra-vesical anastomosis auxiliary device also includes a push rod 5 and a push buckle 6. The push rod 5 is built into the side of the pushing section close to the head end of the cannula 1, and the push buckle 6 is connected to the push rod 5; the cannula 1 is provided with a plurality of limiting grooves 12 extending along the length direction of the cannula 1, and the limiting grooves 12 connect the pushing section and the outside world. The push buckle 6 extends from the limiting groove 12 and slides in the limiting groove 12.

[0037] In this embodiment, the length of the limiting groove 12 is generally equal to or slightly greater than the length of the insertion section along the length of the cannula 1, so that the push rod 5 drives the elastic rod 2 to move toward the insertion section, the elastic rod 2 enters the accommodating section and pushes the suture needle 4 from the accommodating section into the torsion section until it passes out of the torsion section. In this embodiment, the limiting groove 12 can ensure the movement of the push rod 5 and the elastic rod 2, so that when the push rod 5 cannot be pushed, the doctor can still clearly know that the suture needle 4 has passed through the cannula 1. At this time, the suture needle 4 can be pulled with surgical forceps under laparoscopy and subsequent knotting operations can be performed.

[0038] Reference Figures 6 to 10In one embodiment, a wire groove 13 is provided on the end surface of the cannula 1 near the insertion section. The wire groove 13 connects the two adjacent channels 11 and is used to accommodate the suture 3. In this embodiment, one end of the suture 3 is inserted into one of the channels 11 and connected to one of the suture needles 4 in the same group, while the other end is inserted into the other channel 11 and connected to the other suture needle 4 in the same group. The middle portion of the suture 3 is located within the wire groove 13. During suturing, the suture 3 located within the wire groove 13 does not pass through the urethra 100.

[0039] Reference Figure 5 In one embodiment, a trachea 8 is disposed within the cannula 1. A balloon 7 is disposed at the end of the cannula 1 near the insertion section. The balloon 7 communicates with the trachea 8 and is used to temporarily secure the cannula 1 within the urethra 100. A valve is disposed at the end of the trachea 8 away from the balloon 7 to ensure stable air pressure within the balloon 7.

[0040] After the cannula 1 is inserted into the appropriate position of the posterior urethra 100, gas or liquid is introduced into the trachea 8, and the airbag 7 is expanded to be fixed in the urethra 100. At this time, the valve is closed to ensure that the air pressure or hydraulic pressure of the airbag 7 is stable, ensuring that the position of the cannula 1 relative to the urethra 100 no longer changes, which facilitates subsequent suturing operations.

[0041] Reference Figures 6 to 10 In one embodiment, an introduction block 14 is fixed to the end of the cannula 1 near the insertion section. The cross-section of the introduction block 14 gradually decreases as it moves away from the cannula 1. One end of the insertion section extends to the introduction block 14. In this embodiment, when the cannula 1 is inserted into the urethra 100, the introduction block 14 has a generally conical structure, but the end of the introduction block away from the cannula 1 is spherical, which facilitates the insertion of the cannula 1 into the urethra 100.

[0042] In one embodiment, six elastic rods 2 , six suture needles 4 and six channels 11 are provided, and each elastic rod 2 , each suture needle 4 and each channel 11 corresponds to each other; and three suture threads 3 are provided.

[0043] There are six suture needles 4 in this embodiment, which are suitable for the urethra 100-bladder 200 neck 6-needle method.

[0044] Working principle: During the operation, the assistant places the cannula 1 in the posterior urethra 100 from the external opening of the urethra 100. The six channels 11 are respectively located at 12 o'clock, 2 o'clock, 4 o'clock, 6 o'clock, 8 o'clock and 10 o'clock of the cannula 1. After injecting liquid into the valve, the liquid is introduced into the airbag 7 through the trachea 8, causing the airbag 7 to expand, thereby fixing the cannula 1 in the urethra 100. At this time, the assistant pushes the push rod 5 from the 12 o'clock direction, and the push rod 5 moves the elastic rod 2 toward the bladder 200. The elastic rod 2 pushes the suture needle 4 out of the cannula 1. After the suture needle 4 is pushed out of the cannula 1, it penetrates into the posterior urethra 100. Before the suture needle 4 is pushed out, the suture needle 4 will complete a 180° rotation in the torsion section. This rotation is to facilitate the holding of the needle by the instrument under laparoscopy and to avoid damage to the pelvic floor tissue caused by excessive suturing.

[0045] After completing the 12 o'clock needle pushing action, the suture needle 4 in the 2 o'clock direction of the same group will be pushed out. At this time, the suture connected to the same group of suture needles 4 can be separated from the thread groove 13. The surgeon only needs to sequentially pass the customized needles at 12 o'clock and 2 o'clock from the mucosal layer of the bladder 200 neck to the serosal layer and tie a knot to perform the urethra 100 bladder 200 segment anastomosis in the 12 o'clock-2 o'clock direction. Finally, the customized needles at 4 o'clock, 6 o'clock, 8 o'clock and 10 o'clock directions are pushed out in sequence and the suturing action is completed to complete the 6-needle anastomosis of the urethra 100 and the bladder 200 neck.

[0046] Advantages: It is used for anastomosis of the urethra 100 and bladder 200 neck during radical prostatectomy, solving the problem of limited space in traditional laparoscopic surgery. Through the urethra 100 bladder 200 anastomosis auxiliary device, high-quality urethra 100 bladder 200 anastomosis can be completed quickly and accurately, improving surgical efficiency and success rate.

[0047] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A urethra-vesical anastomosis auxiliary device, characterized in that: It includes a cannula, an elastic rod, sutures and a suture needle; An even number of channels are provided in the cannula and are distributed around the axis of the cannula. The channels include a push section and a piercing section that are connected. The opening of the piercing section away from the push section passes through the end surface of the cannula away from the push section. An elastic rod is provided in each of the channels; The suturing needle is arc-shaped, and the insertion section corresponds to the suturing needle one by one; the suturing needle is located in the insertion section in the initial state, and each two suturing needles form a group, and the tail ends of the two suturing needles in the same group are connected by a suture thread; The elastic rod can push the suture needle out of the piercing section.

2. The urethra-vesical anastomosis auxiliary device according to claim 1, characterized in that: The piercing section extends along a preset arc, and includes a receiving section and a twisting section. The receiving section is connected between the twisting section and the pushing section, and an end of the twisting section away from the receiving section opens and passes through the end surface of the cannula away from the pushing section. The suture needle is placed in the accommodating section in an initial state, the inner holes of the accommodating section and the torsion section are adapted to the shape of the suture needle, and the suture needle rotates by a preset angle relative to the initial state after entering the torsion section and before leaving the torsion section.

3. The urethra-vesical anastomosis auxiliary device according to claim 2, characterized in that: The preset angle is 170°-190°.

4. The urethra-vesical anastomosis auxiliary device according to claim 2, characterized in that: The angle of the preset axis is 55°-65°.

5. The urethra-vesical anastomosis auxiliary device according to claim 2, characterized in that: The suture needle includes a pointed needle and an end portion, the end portion is square-shaped, the cross-section of the torsion section is rectangular, and gaps are set between the side walls of the end portion and the inner wall of the torsion section so that the suture needle slides in the torsion section; the pointed needle includes a tip and a main body section, the cross-section of the main body section is circular, and the connection between the end portion and the pointed needle is smoothly transitioned.

6. The urethra-vesical anastomosis auxiliary device according to claim 1, characterized in that: It also includes a push rod and a push buckle, wherein the push rod is built into the side of the pushing section close to the head end of the cannula, and the push buckle is connected to the push rod; The cannula is provided with a plurality of limiting grooves extending along the length direction of the cannula, the limiting grooves communicating with the pushing section and the outside world, the push buckle extending from the limiting grooves, and the push buckle sliding in the limiting grooves.

7. The urethra-vesical anastomosis auxiliary device according to claim 1, characterized in that: A wire groove is provided on the end surface of the cannula close to the puncture section, the wire groove communicates with two adjacent channels, and the wire groove is used to accommodate a suture thread.

8. The urethra-vesical anastomosis auxiliary device according to claim 1, characterized in that: A trachea is arranged in the cannula, and an air bag is arranged at one end of the cannula close to the puncture section. The air bag is connected to the trachea and is used to temporarily fix the cannula in the urethra.

9. The urethra-vesical anastomosis auxiliary device according to claim 1, characterized in that: An introduction block is fixed to one end of the cannula close to the puncture section. The cross section of the introduction block gradually decreases in a direction away from the cannula. One end of the puncture section extends to the introduction block.

10. The urethra-vesical anastomosis auxiliary device according to claim 1, characterized in that: There are six elastic rods, six suturing needles and six channels, and each elastic rod, each suturing needle and each channel corresponds to each other. There are three suture threads.

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