Suture capture tip and suture capture device

Abstract

The utility model relates to the technical field of suturing device, and disclose a suture capture device, include: the end head of connecting on the mounting rod, the end head includes the end head body and suture needle of connecting on the mounting rod, the inside of end head body is provided with arc -shaped guide slot, suture needle connects in the inner wall of arc -shaped guide slot, the surface of suture needle puncture end is provided with the wire groove, the surface of suture needle is provided with the wire hooking groove, and the wire hooking groove is linked with wire groove, and the surface of end head body is connected with suture capture piece, and the surface of suture capture piece is movably connected with the inner wall of wire hooking groove. This suture capture device, through setting suture needle, wire groove, wire hooking groove and suture capture piece, suture wire is clamped in wire groove, and follows suture needle to pass through human tissue, and suture needle continues to move, makes suture capture piece hook suture wire, and the suture wire is positioned to avoid suture wire following suture needle to exit needle hole.

Description

Technical Field

[0001] This utility model relates to the field of suture technology, specifically to a suture capturing device. Background Technology

[0002] In the field of minimally invasive surgery, especially in anatomically limited areas involving the deep pelvic cavity, such as sphincter-preserving surgery for low rectal cancer, digestive tract lumens such as intestinal anastomosis, and pelvic floor reconstruction such as organ suspension, achieving stable, precise, and efficient suturing has always been a major technical challenge. These surgical scenarios typically have the following characteristics:

[0003] In cases where the space is small and deep, the surgical field of vision is severely limited or even impossible to see directly (such as transanal, transoral or deep small incision surgery), and traditional suturing instruments are difficult to deploy and operate effectively.

[0004] The suturing direction is special, often requiring the instruments to be perpendicular to the pre-suture line for puncture and suturing, which places extremely high demands on the stability and controllability of the instruments.

[0005] In situations where direct visualization is impossible or the field of vision is poor, accurately capturing sutures and completing knotting or securing steps is extremely difficult and time-consuming, easily leading to complications such as suture failure, tissue damage, bleeding, or anastomotic leakage.

[0006] Traditional needle holders and suture needles are difficult to maneuver flexibly and position precisely in deep and narrow spaces. In particular, it is difficult to achieve stable puncture and needle movement with the instrument rod perpendicular to the suture surface. Suture capture and knotting require additional instrument assistance, such as hook needles and grasping forceps. The steps are cumbersome, increasing operation time and risks. When additional reinforcement of sutures is required, such as to prevent anastomotic leakage, manage bleeding points, or perform suspension fixation, there is a lack of effective and integrated suture capture mechanisms. They are difficult to adapt to the vertical suturing needs in narrow lumens and are difficult to reliably "grab" and guide sutures without direct vision. Utility Model Content

[0007] In view of the shortcomings of the prior art, the present invention provides a suture capturing device, which solves the problems mentioned in the background.

[0008] This utility model provides the following technical solution: a suture capture end, including an end body, characterized in that a bend is provided on the top left side of the end body, and an arc-shaped guide groove for accommodating the entry and exit of a suture needle is provided inside the bend;

[0009] The surface of the puncture end of the suture needle is provided with a suture-holding groove, and the surface of the suture needle is provided with a hook groove that crosses with the suture-holding groove. The hook groove is connected to the suture-holding groove, and the top right side of the end body is provided with a suture capture element for hooking the surgical suture from the suture-holding groove.

[0010] Preferably, the suture capturing member includes a tab with a through middle and a "Ji" - shaped cross - section. The two ends of the tab are fixed on two mounting grooves formed on the end head body, and an elastic hook is provided in the middle of the tab and extends towards the elbow side and turns outwards.

[0011] Preferably, the movement trajectory of the piercing end of the suture needle is an arc - shaped movement trajectory. When the piercing end of the suture needle moves to the termination position, its surface fits with the hook head of the elastic hook.

[0012] Preferably, the elastic hook and the tab are made of stainless steel sheets; a cavity is provided inside the suture needle.

[0013] A suture capturing device including the suture capturing end head comprises: a mounting rod connected to the bottom of the end head body;

[0014] A transmission component is provided on the inner wall of the mounting rod, and the transmission component is connected to one end of the suture needle. A driving rod is installed at the end of the mounting rod away from the end head, and one end of the driving rod is connected to one end of the transmission component.

[0015] Preferably, a positioning tube is connected to the inner wall of the mounting rod, a return spring is connected to the inner wall of the positioning tube, and one end of the return spring is connected to one end of the driving rod.

[0016] Preferably, a support tube is connected to the inner wall of the positioning tube, and the return spring is sleeved on the surface of the support tube.

[0017] Preferably, the transmission component includes a flexible push rod and a transmission rod installed inside the mounting rod. One end of the flexible push rod is connected to one end of the suture needle, and the other end of the flexible push rod is connected to one end of the transmission rod;

[0018] A guiding slideway and an entry channel are respectively provided inside the end head body. The arc - shaped guide groove is connected to the guiding slideway, and the guiding slideway is connected to the entry channel;

[0019] The flexible push rod is slidably connected to the inner wall of the guiding slideway, and one end of the transmission rod is slidably connected to the inner wall of the entry channel. The other end of the transmission rod passes through the positioning tube and the support tube in sequence and is connected to one end of the driving rod, and one end of the driving rod extends to the outside of the mounting rod.

[0020] Preferably, a holding part is connected to the end of the mounting rod away from the end head. A limiting part is provided on the surface of the holding part. The driving rod is inserted into the inner wall of the holding part, and a limiting plate is provided at the end of the driving rod.

[0021] Preferably, a cavity is provided inside the suture needle.

[0022] Compared with the prior art, the present utility model has the following beneficial effects:

[0023] 1. This suture capturing device, by setting a suture needle, a suture holding groove, a suture hooking groove and a suture capturing component, the suture is caught in the suture holding groove and follows the suture needle through human tissue. As the suture needle continues to move, the suture capturing component hooks the suture and limits the suture, preventing the suture from following the suture needle out of the needle hole.

[0024] 2. This suture capturing device, by setting up a transmission component and a drive rod, the drive rod drives the transmission rod to move, and the transmission rod drives the flexible push rod to move, so as to facilitate the adjustment of the position of the suture needle. Attached Figure Description

[0025] Figure 1 This is a side sectional view of the suture capturing device of this utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of the suture capturing end of this utility model;

[0027] Figure 3 This is a schematic diagram of the suture needle structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the suture capture component of this utility model.

[0029] In the diagram: 1. Mounting rod; 2. End body; 3. Sewing needle; 4. Arc-shaped guide groove; 5. Thread catch groove; 6. Thread hook groove; 7. Thread catcher; 71. Fixing part; 72. Elastic hook piece; 8. Transmission assembly; 81. Flexible push rod; 82. Transmission rod; 9. Mounting groove; 10. Positioning tube; 11. Return spring; 12. Support tube; 13. Guide slide; 14. Entry channel; 15. Drive rod; 16. Grip part; 17. Limiting part; 18. Limiting plate. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-4 The suture capture end includes an end body 2, and a bend is provided on the top left side of the end body 2. The bend has an arc-shaped guide groove 4 that allows the suture needle 3 to enter and exit.

[0032] Please see Figure 3, a wire groove 5 is provided on the surface of the puncture end of the suture needle 3, a hook wire groove 6 that intersects the wire groove 5 at a right angle is provided on the surface of the suture needle 3, the hook wire groove 6 is connected to the wire groove 5, and a suture capture member 7 for hooking the surgical thread from the wire groove 5 is provided on the upper right side of the top of the end body 2.

[0033] Please refer to Figure 2 and Figure 4 , the suture capture member 7 includes a tab 71 with a through middle and a "U" - shaped cross - section, both ends of the tab 71 are fixed on two installation grooves 9 provided on the end body 2, and an elastic hook piece 72 that extends towards the elbow side and turns outwards is provided in the middle of the tab 71.

[0034] The movement track of the puncture end of the suture needle 3 is an arc movement track. When the puncture end of the suture needle 3 moves to the termination position, its surface fits with the hook of the elastic hook piece 72.

[0035] The elastic hook piece 72 and the tab 71 are made of stainless steel sheets; a cavity is provided inside the suture needle 3.

[0036] A suture capture device includes a suture capture end head, and further includes an installation rod 1 connected to the bottom of the end body;

[0037] Please refer to Figure 1 , a transmission component 8 is provided on the inner wall of the installation rod 1, and the transmission component 8 is connected to one end of the suture needle 3. A driving rod 15 is installed at the end of the installation rod 1 far from the end head, and one end of the driving rod 15 is connected to one end of the transmission component 8.

[0038] A positioning tube 10 is connected to the inner wall of the installation rod 1, a return spring 11 is connected to the inner wall of the positioning tube 10, one end of the return spring 11 is connected to one end of the driving rod 15, a support tube 12 is connected to the inner wall of the positioning tube 10, the return spring 11 is sleeved on the surface of the support tube 12. When the driving rod 15 is pushed, the return spring 11 will be compressed. When the driving rod 15 is released, the return spring 11 tends to stretch back, pushing the driving rod 15 to reset, and further enabling the driving rod 15 to drive the suture needle 3 to reset through the transmission component 8.

[0039] The transmission assembly 8 includes a flexible push rod 81 and a transmission rod 82 installed inside the mounting rod 1. One end of the flexible push rod 81 is connected to one end of the suture needle 3, and the other end of the flexible push rod 81 is connected to one end of the transmission rod 82. The end body 2 is provided with a guide slide 13 and an entry channel 14. The arc-shaped guide groove 4 is connected to the guide slide 13, and the guide slide 13 is connected to the entry channel 14. The flexible push rod 81 is slidably connected to the inner wall of the guide slide 13, and one end of the transmission rod 82 is slidably connected to the inner wall of the entry channel 14. The other end of the transmission rod 82 passes through the positioning tube 10 and the support tube 12 in sequence and is connected to one end of the drive rod 15. One end of the drive rod 15 extends to the outside of the mounting rod 1. The drive rod 15 drives the transmission rod 82 to move, and the transmission rod 82 drives the flexible push rod 81 to move, which facilitates the adjustment of the position of the suture needle 3.

[0040] The end of the mounting rod 1 furthest from the end is connected to a gripping part 16. A limiting part 17 is provided on the surface of the gripping part 16. The driving rod 15 is inserted into the inner wall of the gripping part 16, and a limiting plate 18 is provided at the end of the driving rod 15.

[0041] In use, the suture needle 3 is inserted into the suture groove 5. The suture needle 3 and the suture capture device 7 are located on both sides of the suture position. The drive rod 15 is pushed, which drives the transmission rod 82 to move. The transmission rod 82 drives the flexible push rod 81 to move. One end of the flexible push rod 81 pushes the suture needle 3 to move, so that the suture needle 3 carries the suture to puncture human tissue. Because the suture needle 3 is engaged in the suture groove 5, the suture continues to follow the movement of the suture needle 3. The suture needle 3 continues to move and inserts into the middle through-hole of the suture capture device 7 until the termination position. The hook head of the elastic hook 72 enters the hook groove 6 and passes over the suture. When the suture needle 3 is withdrawn, the hook head of the elastic hook 72 hooks the suture and limits the suture, so that the suture stays on the side of the hook head of the elastic hook 72, preventing the suture from following the suture needle 3 out of the needle hole, thus completing the suturing operation.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A suture capture end, comprising an end body (2), characterized in that, On the left side of the top of the end head body (2), an elbow is provided, and an arc-shaped guide groove (4) for the suture needle (3) to enter and exit is arranged inside the elbow; On the surface of the puncture end of the suture needle (3), a thread clamping groove (5) is formed, and a hook-shaped thread groove (6) that intersects the thread clamping groove (5) at a right angle is arranged on the surface of the suture needle (3). The hook-shaped thread groove (6) is communicated with the thread clamping groove (5), and on the right side of the top of the end head body (2), a suture capturing member (7) for hooking the surgical thread from the thread clamping groove (5) is provided.

2. The suture capturing end according to claim 1, characterized in that, The suture capturing member (7) includes a tab (71) with a through middle and a "ji" - shaped cross-section. Both ends of the tab (71) are fixed on two installation grooves (9) formed on the end head body (2), and an elastic hook piece (72) that extends towards the elbow side and turns outwards is arranged in the middle of the tab (71).

3. The suture capturing end according to claim 2, characterized in that, The movement track of the puncture end of the suture needle (3) is an arc-shaped movement track. When the puncture end of the suture needle (3) moves to the end position, its surface fits with the hook head of the elastic hook piece (72).

4. The suture capturing end according to claim 2, characterized in that, The elastic hook piece (72) and the tab (71) are made of stainless steel sheets; a cavity is arranged inside the suture needle (3).

5. A suture capturing device comprising the suture capturing end of claim 1, characterized in that, It includes: An installation rod (1) connected to the bottom of the end head body (2); On the inner wall of the installation rod (1), a transmission component (8) is arranged, and the transmission component (8) is connected to one end of the suture needle (3). At the end of the installation rod (1) far from the end head, a driving rod (15) is installed, and one end of the driving rod (15) is connected to one end of the transmission component (8).

6. The suture capturing device according to claim 5, characterized in that, On the inner wall of the installation rod (1), a positioning tube (10) is connected. On the inner wall of the positioning tube (10), a return spring (11) is connected. One end of the return spring (11) is connected to one end of the driving rod (15).

7. The suture capturing device according to claim 6, characterized in that, On the inner wall of the positioning tube (10), a support tube (12) is connected. The return spring (11) is sleeved on the surface of the support tube (12).

8. The suture capturing device according to claim 7, characterized in that, The transmission component (8) includes a flexible push rod (81) and a transmission rod (82) installed inside the installation rod (1). One end of the flexible push rod (81) is connected to one end of the suture needle (3), and the other end of the flexible push rod (81) is connected to one end of the transmission rod (82); Inside the end head body (2), a guiding slideway (13) and an entering channel (14) are respectively arranged. The arc-shaped guide groove (4) is communicated with the guiding slideway (13), and the guiding slideway (13) is communicated with the entering channel (14); The flexible push rod (81) is slidably connected to the inner wall of the guiding slideway (13), and one end of the transmission rod (82) is slidably connected to the inner wall of the entering channel (14). The other end of the transmission rod (82) sequentially passes through the positioning tube (10) and the support tube (12) and is connected to one end of the driving rod (15). One end of the driving rod (15) extends to the outside of the installation rod (1).

9. The suture capturing device according to claim 8, characterized in that, At the end of the installation rod (1) far from the end head, a holding part (16) is connected. On the surface of the holding part (16), a limiting part (17) is arranged. The driving rod (15) is inserted into the inner wall of the holding part (16), and a limiting plate (18) is arranged at the end of the driving rod (15).

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