Stitching instrument percussion device for laparoscope

Abstract

The invention discloses a laparoscope stitching instrument percussion device which comprises a handle body, a push needle grip, a percussion arc, a tension spring, a percussion end steel wire rope, a reverse grooved wheel and an execution end steel wire rope. The push needle grip is hinged to the handle body through a percussion rotating pin, and a rectangular through hole is formed in the upper end of the push needle grip; the percussion arc is fixed on the push needle grip through a percussion rotating pin and a rectangular through hole, and the percussion arc is connected with a percussion end steel wire rope through a percussion grooved wheel; the steel wire is stretched out and drawn back through rotation of the percussion arc, so that the far-end suture needle of the suture instrument is driven, more space is saved compared with straight line stretching of the handle end, the pulling steel wire in a larger range is arranged in the same space of the handle end, and therefore full-stroke sliding of the far-end suture needle is completed; the direction of the steel wire is changed through the reverse grooved wheel, the steel wire extends to the far end of the stitching instrument for use, the tension spring is arranged and can reset after percussion is completed, and operation is better.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and in particular to a laparoscopic stapler firing device. Background Art

[0002] Laparoscopic suture instruments are mainly used in minimally invasive surgeries. Their components are small in size and their internal structure is relatively compact. When the distal suture needle slides through its full stroke, the required driving range of the wire rope is relatively large. Due to the limitation of the internal space at the handle end, the wire rope is not fully contracted and the full stroke of the distal suture needle cannot be achieved. Summary of the invention

[0003] The object of the present invention is to provide a laparoscopic stapler firing device to solve the problem that the spatial position of the stapler handle end is limited in the above-mentioned background technology, thereby limiting the insufficient contraction of the wire rope and failing to achieve full-stroke sliding of the distal suture needle.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A laparoscopic suture firing device comprises a handle body 1, a push needle grip 17, a firing arc 14, a tension spring 5, a firing end steel wire rope 7, an opposite groove wheel 8 and an execution end steel wire rope 16, wherein the push needle grip 17 is hinged on the handle body 1 through a firing rotating pin 15, and a rectangular through hole 21 is provided on the upper end of the push needle grip 17, and the firing arc 14 is fixed to the push needle grip 17 through the firing rotating pin 15 and the rectangular through hole 21, and the firing arc 14 is connected to the firing end steel wire rope 7 through the firing groove wheel 13, and one end of the firing end steel wire rope 7 passes through the opposite groove wheel 8 and is pressed against an elliptical copper sleeve 6 to form a circular ring and is arranged at one end of the tension spring 5, and the other end of the tension spring 5 is fixed to the execution end steel wire rope 16 through the execution end steel wire copper sleeve 4.

[0006] The other end of the firing end steel wire rope 7 is pressed against the firing end steel wire copper sleeve 12 and fixed on the inner wall of the handle body 1 , and a left guide groove wheel 10 and a right guide groove wheel 11 are provided in the middle section of the firing end steel wire rope 7 .

[0007] An upper reversing sheave 2 and a middle reversing sheave 3 are provided on the execution end steel wire rope 16 inside the handle body 1 .

[0008] The reverse groove wheel 8 is fixed at an end position in the handle body 1 by a groove wheel pin 9 , and the push-pin grip 17 is fixed in the handle body 1 by a firing rotation pin 15 .

[0009] The firing arc 14 is composed of a firing arc lower plate 18 and a firing arc lower plate 20 .

[0010] The groove wheel is fixed in the handle body 1 through the groove wheel pin 22, the steel wire is arranged in the groove 23 in the handle body 1, the tension spring 5 is arranged in the tension spring groove 25 in the handle body 1, the firing end steel wire copper sleeve 12 is fixed in the rectangular groove 26, the firing arc 14 is arranged in the firing arc rotation groove 28, and the two edge sides of the firing arc rotation groove 28 are provided with an upper limit boss 27 and a lower limit boss 29.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The steel wire is retracted and extended by rotating the firing arc, thereby driving the suture needle at the distal end of the suture device, which saves more space than the straight line stretching at the handle end. A larger range of pulling steel wire is set in the same space at the handle end, thereby completing the full stroke sliding of the distal suture needle. The position of the steel wire is limited by the guide groove wheel, and the direction of the steel wire is changed by the reverse groove wheel to extend it to the distal end of the suture device for use. A tension spring is provided to reset it after the firing is completed, which is better for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the initial firing state of the present invention;

[0014] Figure 2 It is a schematic diagram of the firing completion state of the present invention;

[0015] Figure 3 It is a schematic diagram of the range-extending structure of the present invention;

[0016] Figure 4 is a cross-sectional view of the range-extending structure of the present invention;

[0017] Figure 5 It is a schematic diagram of the push pin grip structure of the present invention;

[0018] Figure 6 It is a schematic diagram of the main structure of the handle of the present invention.

[0019] In the figure: 1. handle body; 2. upper reversing groove wheel; 3. middle reversing groove wheel; 4. copper sleeve of wire rope at execution end; 5. tension spring; 6. elliptical copper sleeve; 7. wire rope at firing end; 8. reverse groove wheel 3; 9. groove wheel pin; 10. left guide groove wheel; 11. right guide groove wheel; 12. copper sleeve of wire rope at firing end; 13. firing groove wheel; 14. firing arc; 15. firing rotating pin; 16. wire rope at execution end; 17. push pin grip; 18. firing arc lower plate; 19. firing groove wheel pin; 20. firing arc upper plate; 21. rectangular through hole; 22. groove wheel pin hole; 23. groove; 24. tension spring groove; 25. copper sleeve groove; 26. short distance wire rope groove; 27. lower limit boss; 28. firing arc rotating groove; 29. ​​upper limit boss. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] like Figure 1-Figure 5 As shown, a laparoscopic suture device firing device comprises a handle body 1, a push needle grip 17, a firing arc 14, a tension spring 5, a firing end steel wire rope 7, an opposite groove wheel 8 and an execution end steel wire rope 16. The handle body 1 is provided with a push needle grip 17, and the push needle grip 17 is arranged on one end of the handle body 1 and is provided with a firing arc 14. The firing arc 14 is connected to the firing end steel wire rope 7 through the firing groove wheel 13. One end of the firing end steel wire rope 7 passes through the opposite groove wheel 8 and is pressed against the elliptical copper sleeve 6 to form a ring and is arranged at one end of the tension spring 5. The other end of the tension spring 5 is fixed to the execution end steel wire rope 16 through the execution end steel wire copper sleeve 4.

[0022] The other end of the firing end steel wire rope 7 is pressed against the firing end steel wire copper sleeve 12 and fixed on the inner wall of the handle body 1 , and a left guide groove wheel 10 and a right guide groove wheel 11 are provided in the middle section of the firing end steel wire rope 7 .

[0023] An upper reversing sheave 2 and a middle reversing sheave 3 are provided on the execution end steel wire rope 16 inside the handle body 1 .

[0024] The reverse groove wheel 8 is fixed at an end position in the handle body 1 by a groove wheel pin 9 , and the push-pin grip 17 is fixed in the handle body 1 by a firing rotation pin 15 .

[0025] The firing arc 14 is composed of a firing arc lower plate 18 and a firing arc lower plate 20 . A rectangular through hole 21 is provided at the fixed end of the push pin grip 17 . One end of the firing arc 14 is fixed in the rectangular through hole 21 .

[0026] like Figure 6 As shown, the groove wheel is fixed in the handle body 1 through the groove wheel pin 22, the steel wire is arranged in the groove 23 in the handle body 1, the tension spring 5 is arranged in the tension spring groove 25 in the handle body 1, the firing end steel wire copper sleeve 12 is fixed in the rectangular groove 26, the firing arc 14 is arranged in the firing arc rotation groove 28, and the two edge sides of the firing arc rotation groove 28 are provided with an upper limit boss 27 and a lower limit boss 29.

[0027] Figure 1This is the initial state of the suture device firing device. When the doctor tightly grasps the needle push handle 17, the firing arc 14 rotates upward around the firing rotating pin 15, driving the firing end wire rope 7 to move upward, and the other end of the firing end wire rope 7 pulls the tension spring 5 to move downward, and the tension spring 5 pulls the execution end wire rope 16 to move downward, further driving the drive disk to rotate, realizing the firing action of the suture needle. The firing completion state is shown in FIG. Figure 2 As shown, when the doctor releases the push needle handle 17, the reset spring resets, pulling the execution end wire rope 16 in the reverse direction, driving the drive disk to rotate in the reverse direction, thereby realizing the firing reset of the suture needle, and the execution end wire rope 16 pulls the firing end wire rope 7 in the reverse direction, further pulling the firing arc 14 to rotate downward around the firing rotating pin 15, thereby realizing the reset of the push needle handle 17.

[0028] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the invention and are not intended to limit the present invention. Without departing from the novel spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A laparoscopic stapler firing device, characterized in that: The invention comprises a handle body (1), a push pin grip (17), a firing arc (14), a tension spring (5), a firing end steel wire rope (7), a reverse groove wheel (8) and an execution end steel wire rope (16). The handle body (1) is provided with a push pin grip (17). One end of the push pin grip (17) arranged inside the handle body (1) is provided with a firing arc (14). The firing arc (14) is connected to the firing end steel wire rope (7) through a firing groove wheel (13). One end of the firing end steel wire rope (7) passes through the reverse groove wheel (8) and is pressed against an elliptical copper sleeve (6) to form a circular ring and is arranged at one end of the tension spring (5). The other end of the tension spring (5) is fixed to the execution end steel wire rope (16) through an execution end steel wire copper sleeve (4).

2. The laparoscopic stapler firing device according to claim 1, characterized in that: The other end of the firing end steel wire rope (7) is pressed against the firing end steel wire copper sleeve (12) and fixed on the inner wall of the handle body (1), and the middle section of the firing end steel wire rope (7) is provided with a left guide groove wheel (10) and a right guide groove wheel (11).

3. The laparoscopic stapler firing device according to claim 1, characterized in that: An upper reversing groove wheel (2) and a middle reversing groove wheel (3) are provided on the execution end steel wire rope (16) inside the handle body (1).

4. The laparoscopic stapler firing device according to claim 1, characterized in that: The reverse groove wheel (8) is fixed at an end position in the handle body (1) via a groove wheel pin (9), and the push-pin grip (17) is fixed in the handle body (1) via a firing rotation pin (15).

5. The laparoscopic stapler firing device according to claim 1, characterized in that: The firing arc (14) is composed of a firing arc lower plate (18) and a firing arc lower plate (20); a rectangular through hole (21) is provided at the fixed end of the push pin grip (17); and one end of the firing arc (14) is fixed in the rectangular through hole (21).

6. The laparoscopic stapler firing device according to claim 1, characterized in that: The groove wheel is fixed in the handle body (1) through the groove wheel pin shaft (22), the steel wire is arranged in the groove (23) in the handle body (1), the tension spring (5) is arranged in the tension spring groove (25) in the handle body (1), the firing end steel wire copper sleeve (12) is fixed in the rectangular groove (26), the firing arc (14) is arranged in the firing arc rotation groove (28), and the two edge sides of the firing arc rotation groove (28) are provided with an upper limit boss (27) and a lower limit boss (29).

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