Laparoscopic cutting stapler stapler assembly

Abstract

The present invention discloses a laparoscopic cutting stapler stapler assembly, comprising a sleeve, a driving mechanism accommodated in the sleeve and a stapler mechanism fired by the driving mechanism. A semi-enclosed stapler bracket structure is adopted, and a two-side positioning method is adopted to replace a traditional tail positioning method. Positioning is performed through a slot and a buckle, which effectively ensures that the center distance of the stapler body is installed stably, the position of the stapler hole and the staple pit of the staple holder can correctly correspond to each other, thereby ensuring that the staple type has no dovetail phenomenon, and ensuring a good effect of surgical suturing of tissues.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to a laparoscope cutting stapler stapler assembly. Background Art

[0002] In laparoscopic surgery and thoracoscopic surgery, various manual, electric and surgical robot-used laparoscopic cutting and staplers are usually used for cutting and stapler surgeries in the abdominal and thoracic cavities, and can also be used for cutting and stapler surgeries in non-laparoscopic surgery, which can reduce surgical trauma, shorten operation time and improve surgical quality. The existing laparoscopic cutting and stapler stapler stapler body and stapler bracket are fixed in the tail positioning, which makes the front center distance of the stapler body easy to be unstable, and the position of the staple pit of the stapler seat cannot correspond correctly, resulting in the titanium staples in the final suture being dovetail-shaped, and the surgical suture effect is poor. Summary of the invention

[0003] In view of the above technical problems, the present invention provides a laparoscopic cutting stapler stapler assembly, comprising:

[0004] The nail magazine mechanism of the present invention comprises an upper pressing plate cover, a lower pressing plate cover engaged with the upper pressing plate cover, a cutting knife connecting piece abutting against the lower end surface of the upper pressing plate cover, a nail magazine steering connecting rod arranged between the upper pressing plate cover and the lower pressing plate cover, a firing rod connector engaged with the front end of the cutting knife connecting piece, a stopper connected to the firing rod connector, a stopper pin for connecting the firing rod connector and the stopper, a bending reset spring piece connected to the front end of the lower pressing plate cover, and a connecting rod abutting against the front end of the bending reset spring piece. The joint and the cutting knife body are arranged at the front end of the cutting knife connecting piece, so the cutting knife connecting piece is an I-beam structure, the tail of the cutting knife connecting piece is provided with a snap hook, the tail of the firing rod connector is provided with a snap groove matched with the snap hook, the front of the upper end face of the lower pressure plate cover is provided with a limiting protrusion, the limiting protrusion is used to limit the bending reset spring sheet, the tail end of the lower pressure plate cover is sleeved with a safety knob, the connecting head includes an upper connecting block, a lower connecting block connected to the upper connecting block and a rivet for connecting the upper connecting block and the lower connecting block, and the rivet is connected to the front of the nail magazine steering connecting rod.

[0005] Preferably, there are two bending reset springs, which are arranged on both sides of the cutting knife connecting piece. The cutting knife connecting piece includes four pieces, namely two inner connecting pieces and two outer connecting pieces, and the end faces of the inner connecting pieces are fitted with the outer connecting pieces.

[0006] Preferably, a boss is provided on the lower connecting block, a pin hole is provided on the boss, and a rotating pin is provided in the pin hole.

[0007] Preferably, an upper connecting piece is fixed on the upper connecting block, a lower connecting piece is fixed on the lower connecting block, an upper connecting groove matched with the upper connecting piece is provided on the upper pressure plate cover, and a lower connecting groove matched with the lower connecting piece is provided on the lower pressure plate cover.

[0008] Preferably, the nail magazine mechanism includes a nail magazine bracket, a nail anvil bracket arranged below the nail magazine bracket, a nail magazine body accommodated inside the nail magazine bracket, a nail pushing slider arranged on the nail magazine body, a nail anvil arranged on the nail anvil bracket, and titanium nails accommodated in the nail magazine body.

[0009] Preferably, buckles are provided on both sides of the nail magazine body, and slots adapted to the buckles are provided on both sides of the nail magazine bracket.

[0010] Preferably, there are six card slots, and the six card slots include two pairs of butterfly-shaped card slots and one pair of waist-shaped card slots.

[0011] Preferably, both the nail magazine body and the nail magazine bracket are provided with a slide groove, the slide groove is used to accommodate the sliding of the cutting knife body, and a nail pusher is provided below the nail pushing slider.

[0012] Preferably, the push pin slider is wedge-shaped, and a sliding limit plate is provided below the push pin slider, and the sliding limit plate is used to ensure that the push pin slider moves in the sliding groove. Two push pin plates are respectively provided on both sides of the sliding limit plate, and the estimator is positioned opposite to the estimator and is arranged directly above it.

[0013] Beneficial effects:

[0014] 1. The half-wrapped nail magazine bracket structure is adopted, and the two-side positioning method is used to replace the traditional tail positioning method. The positioning is performed through the slot and the buckle, which effectively ensures that the center distance of the nail magazine body is installed stably, and the position of the nail magazine hole and the nail pit of the nail seat can correspond correctly to ensure that the nail type has no dovetail phenomenon, ensuring the good effect of surgical suturing tissue. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0017] Figure 2 It is a front cross-sectional view of the present invention;

[0018] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the safety knob in the present invention;

[0020] Figure 5 for Figure 3 The enlarged schematic diagram at A in the middle;

[0021] Figure 6 It is a schematic diagram of the structure of the stopper of the present invention;

[0022] Figure 7 It is a schematic diagram of the structure of the pin-pushing slider in the present invention.

[0023] The numbers in the figure represent:

[0024] 1. Sleeve 2. Safety knob 3. Connector 4. Nail magazine bracket 5. Nail anvil bracket 6. Nail anvil 7. Card slot 8. Nail magazine body 9. Titanium nail 10. Nail magazine steering link 11. Cutting knife body 12. Cutting knife connecting piece 13. Upper pressure plate cover 14. Lower pressure plate cover 15. Snap hook 16. Safety limit block 17. Nail push slider 18. Lower connecting block 19. Upper connecting block 20. Rotating pin 21. Rivet 22. Bending reset spring piece 23. Buckle 24. Firing rod connector 25. Stopper 26. Sliding limit plate 27. Nail push plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all 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.

[0026] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", "up", "down", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0027] like Figure 1-7As shown, the present invention includes a sleeve 1, a driving mechanism accommodated in the sleeve 1, and a nail magazine mechanism fired by the driving mechanism, wherein the driving mechanism includes an upper pressure plate cover 13, a lower pressure plate cover 14 engaged with the upper pressure plate cover 13, a cutting knife connecting piece 12 abutting against the lower end surface of the upper pressure plate cover 13, a nail magazine steering connecting rod 10 arranged between the upper pressure plate cover 13 and the lower pressure plate cover 14, a firing rod connector 24 engaged with the front end of the cutting knife connecting piece 12, a stopper 25 connected to the firing rod connector 24, a stopper pin for connecting the firing rod connector 24 and the stopper 25, a bending reset spring piece 22 connected to the front end of the lower pressure plate cover 14, and a bending reset spring piece 22 abutting against the front end of the bending reset spring piece 22. The connecting head 3 and the cutting knife body 11 arranged at the front end of the cutting knife connecting piece 12, so the cutting knife connecting piece 12 is an I-beam structure, the tail of the cutting knife connecting piece 12 is provided with a snap hook 15, the tail of the firing rod connector 24 is provided with a snap groove matched with the snap hook 15, the front of the upper end face of the lower pressure plate cover 14 is provided with a limiting protrusion, the limiting protrusion is used to limit the bending reset spring piece 22, the tail end of the lower pressure plate cover 14 is sleeved with a safety knob 2, the connecting head 3 includes an upper connecting block 19, a lower connecting block 18 connected to the upper connecting block 19 and a rivet 21 for connecting the upper connecting block 19 and the lower connecting block 18, and the rivet 21 is connected to the front of the nail magazine steering link 10.

[0028] There are two bending reset springs 22, and the two bending reset carbon pieces are arranged on both sides of the cutting blade connecting piece 12. The cutting blade connecting piece 12 includes four pieces, namely two inner connecting pieces and two outer connecting pieces, and the end faces of the inner connecting pieces and the outer connecting pieces are in contact. The lower connecting block 18 is provided with a boss, and the boss is provided with a pin hole, and the pin hole is provided with a rotating pin 20. The upper connecting piece is fixed on the upper connecting block 19, and the lower connecting piece is fixed on the lower connecting block 18. The upper pressure plate cover 13 is provided with an upper connecting groove adapted to the upper connecting piece, and the lower pressure plate cover 14 is provided with a lower connecting groove adapted to the lower connecting piece.

[0029] The nail magazine mechanism includes a nail magazine support 4, a nail anvil support 5 provided below the nail magazine support 4, a nail magazine body 8 accommodated inside the nail magazine support 4, a nail pushing slider 17 provided on the nail magazine body 8, a nail anvil 6 provided on the nail anvil support 5, and titanium nails 9 accommodated in the nail magazine body 8. Buckles 23 are provided on both sides of the nail magazine body 8, and slots 7 adapted to the buckles 23 are provided on both sides of the nail magazine support 4. There are six slots 7, and the six slots 7 include two pairs of butterfly-shaped slots 7 and a pair of waist-shaped slots 7. Slide grooves are provided on the nail magazine body 8 and the nail magazine support 4, and the slide grooves are used to accommodate the sliding of the cutting knife body. A nail pusher is provided below the nail pushing slider. The pin pushing slider 17 is wedge-shaped, and a sliding limit plate 26 is provided below the pin pushing slider 17. The sliding limit plate 26 is used to ensure that the pin pushing slider 17 moves in the sliding groove. Two pin pushing plates 27 are provided on both sides of the sliding limit plate 26. The position of the estimator is opposite to the estimator and is arranged directly above it.

[0030] During operation, the nail magazine body 8 is installed on the nail magazine bracket 4, the buckle 23 is aligned with the slot 7, the nail magazine body 8 and the nail support 6 are opened, and the target physiological tissue is placed between the two. Under the action of the cutting knife connecting piece 12 pushing the cutting knife forward along the slide groove, the nail magazine body 8 and the nail support 6 are closed and clamped to the physiological tissue, and the cutting knife cuts the physiological tissue. By pushing the nail pushing slider 17 forward and pressing the nail support 6, the titanium nail 9 is pressed down and sutured to the physiological tissue. In the safety state, the safety knob 2 in the present invention limits the movement of the cutting connecting piece by rotating the safety limit block 16 on its inner wall to the corresponding notch of the cutting knife connecting piece 12.

[0031] Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

Claims

1. A laparoscopic cutting stapler stapler assembly, characterized in that: The nail magazine mechanism comprises a sleeve, a driving mechanism accommodated in the sleeve and a nail magazine mechanism fired by the driving mechanism, wherein the driving mechanism comprises an upper pressure plate cover, a lower pressure plate cover engaged with the upper pressure plate cover, a cutting knife connecting piece abutting against the lower end surface of the upper pressure plate cover, a nail magazine steering connecting rod arranged between the upper pressure plate cover and the lower pressure plate cover, a firing rod connector engaged with the front end of the cutting knife connecting piece, a stopper connected to the firing rod connector, a stopper pin for connecting the firing rod connector and the stopper, a bending and resetting spring piece connected to the front end of the lower pressure plate cover, a connecting head abutting against the front end of the bending and resetting spring piece and a cutting knife body arranged at the front end of the cutting knife connecting piece. Therefore, the cutting knife connecting piece is an I-beam structure, the tail of the cutting knife connecting piece is provided with a snap hook, the tail of the firing rod connector is provided with a snap groove matched with the snap hook, the front of the upper end face of the lower pressure plate cover is provided with a limiting protrusion, the limiting protrusion is used to limit the bending reset spring piece, and the tail end of the lower pressure plate cover is sleeved with a safety knob, the connecting head comprises an upper connecting block, a lower connecting block connected to the upper connecting block, and a rivet for connecting the upper connecting block and the lower connecting block, the rivet is connected to the front part of the nail magazine steering connecting rod; the bending reset spring pieces are two, and the two bending reset spring pieces are respectively arranged on both sides of the cutting knife connecting piece, and the cutting knife connecting piece comprises four The lock is a pair of locks, each of which is connected with a lock of the lock, and the lock has two opposite ends, and the two ends are connected with each other through the lock. The lock has two opposite ends, and the two ends are connected with each other through the lock. and titanium nails accommodated in the nail magazine body; buckles are provided on both sides of the nail magazine body, and slots compatible with the buckles are provided on both sides of the nail magazine bracket; there are six slots, and the six slots include two pairs of butterfly slots and a pair of waist-shaped slots; both the nail magazine body and the nail magazine bracket are provided with sliding grooves, and the sliding grooves are used to accommodate the sliding of the cutting knife body, and a nail pusher is provided under the nail pushing slider; the nail pushing slider is wedge-shaped, and a sliding limit plate is provided under the nail pushing slider, and the sliding limit plate is used to ensure that the nail pushing slider moves in the sliding groove, and two nail pushing plates are respectively provided on both sides of the sliding limit plate, and the position of the nail pushing plates is opposite to the nail pusher and is arranged directly above it.

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