Split type return button for endoscope anastomat

Abstract

The utility model relates to the technical field of endoscope anastomats, in particular to a split type return button for an endoscope anastomat, which comprises a return button L and a return button R. A connecting arm L formed on the return button L is in butt joint with a connecting arm R formed on the return button R. A rectangular pin and a round pin are arranged on the butt joint face of the connecting arm L. A rectangular hole in butt joint with the rectangular pin and a round hole in butt joint with the round pin are formed in the butt joint face of the connecting arm R. The return button L and the return button R are detachably connected through a square pin, and the square pin is located under the connecting arm L and the connecting arm R. In the design, the return knob L1 and the return knob R2 are connected in a split manner, so that the torsion between the return knob L1 and the return knob R2 is improved, and the return force during use is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of laparoscopic staplers, in particular to a split return torsion for laparoscopic staplers. Background Art

[0002] At present, a return twist is provided on the laparoscopic stapler to realize the retraction function. The existing return twist adopts an integrated structure, and a square pin is connected in series on the return twist. When in use, the two ends of the return twist are manually turned. However, when the forces on the two ends of the return twist are uneven and the connecting arm of the return twist is deformed after long-term use, the torque of the return twist is reduced, the restoring force is increased, and the use effect of the return twist is reduced. Utility Model Content

[0003] The utility model aims to solve the above defects and provides a split return torsion for a laparoscope stapler.

[0004] In order to overcome the defects existing in the background technology, the technical solution adopted by the utility model to solve its technical problems is: a split return twist for a laparoscopic stapler, comprising a return twist L and a return twist R symmetrical in structure with the return twist L, a connecting arm L formed on the return twist L is docked with a connecting arm R formed on the return twist R, a rectangular pin and a round pin are arranged on the docking surface of the connecting arm L, a rectangular hole docking with the rectangular pin and a round hole docking with the round pin are provided on the docking surface of the connecting arm R, the return twist L and the return twist R are detachably connected by a square pin, and the square pin is located directly below the connecting arm L and the connecting arm R.

[0005] A further improvement includes that the angles between the connecting arm L and the connecting arm R and the horizontal plane are in the range of 30-45 degrees.

[0006] A further improvement includes forming connecting parts with inverted serration structures at both ends of the square pin, the connecting parts are respectively inserted into connecting holes respectively opened relatively on the return torsion L and the return torsion R, and inverted serration parts matching the connecting parts are arranged in the connecting holes.

[0007] A further improvement includes providing cavities on the surfaces of the restoring torsion L and the restoring torsion R respectively.

[0008] The beneficial effect of the utility model is that in the design, the restoring torsion L1 and the restoring torsion R2 are connected in a split manner, and a rectangular pin and a round pin are respectively inserted into the rectangular hole and the round hole, so as to increase the torque between the restoring torsion L1 and the restoring torsion R2 and reduce the restoring force during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0010] Figure 1 It is an assembly drawing of the utility model;

[0011] Figure 2 It is an axonometric view of the utility model;

[0012] Figure 3 It is the front view of the utility model;

[0013] Figure 4 It is a partial assembly cross-sectional view of the connection part of the middle pin of the utility model;

[0014] In the figure, 1-restoring torsion L, 2-restoring torsion R, 3-square pin, 4-connecting arm L, 5-connecting arm R, 6-rectangular hole, 7-round hole, 8-connecting part, 9-cavity, 10-connecting hole, 11-round pin, 12-rectangular pin, 13-inverted serrated part. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The embodiments in the basic utility model and all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] according to Figure 1 , Figure 2 and Figure 3 As shown, a split return twist for a laparoscopic stapler includes a return twist L1 and a return twist R2 which is symmetrical with the return twist L1 in structure. A connecting arm L4 formed on the return twist L1 is docked with a connecting arm R5 formed on the return twist R2. A rectangular pin 12 and a round pin 11 are arranged on the docking surface of the connecting arm L4. A rectangular hole 6 which is docked with the rectangular pin 12 and a round hole 7 which is docked with the round pin 11 are provided on the docking surface of the connecting arm R5. The return twist L1 and the return twist R2 are detachably connected by a square pin 3. The square pin 3 is inserted into the rack so that the rack moves to realize the retraction function. The square pin 3 is located directly below the connecting arm L4 and the connecting arm R5.

[0017] In this design, the restoring torsion L1 and the restoring torsion R2 are connected in a split manner, and the rectangular pin 12 and the round pin 11 are respectively inserted into the rectangular hole 6 and the round hole 7, so as to increase the torque between the restoring torsion L1 and the restoring torsion R2 and reduce the restoring force during use.

[0018] The angle between the connecting arm L4 and the connecting arm R5 and the horizontal plane is within a range of 30-45 degrees. This design method is conducive to increasing the torque between the restoring torsion L1 and the restoring torsion R2.

[0019] according to Figure 4As shown, connecting parts 8 with inverted serration structures are formed at both ends of the square pin 3. The connecting parts 8 are respectively inserted into connecting holes 10 respectively opened relatively on the return torsion L1 and the return torsion R2. Inverted serrations 13 matching the connecting parts 8 are arranged in the connecting holes 10. The inverted serrations 13 can limit the connecting parts 8 from being pulled out of the connecting holes 10. The square pin 3 with this design structure is not easy to fall off after being connected with the return torsion L1 and the return torsion R2. It is more labor-saving and stable when pulling back the return torsion L1 and the return torsion R2, and has the advantages of low clinical risks and easy assembly.

[0020] Cavities 9 are respectively provided on the surfaces of the return torsion L1 and the return torsion R2, thereby reducing the overall weight of the return torsion and achieving the effect of saving materials and reducing costs.

[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A split return torsion for a laparoscopic stapler, characterized in that: The invention comprises a return twist L (1) and a return twist R (2) which is symmetrical in structure with the return twist L (1); a connecting arm L (4) formed on the return twist L (1) is butted with a connecting arm R (5) formed on the return twist R (2); a rectangular pin (12) and a round pin (11) are arranged on the butting surface of the connecting arm L (4); a rectangular hole (6) butted with the rectangular pin (12) and a round hole (7) butted with the round pin (11) are arranged on the butting surface of the connecting arm R (5); the return twist L (1) and the return twist R (2) are detachably connected via a square pin (3), and the square pin (3) is located directly below the connecting arm L (4) and the connecting arm R (5).

2. A split return torsion device for a laparoscopic stapler according to claim 1, characterized in that: The angles between the connecting arm L (4) and the connecting arm R (5) and the horizontal plane are in the range of 30-45 degrees.

3. The split return torsion device for a laparoscopic stapler according to claim 1, characterized in that: Connecting portions (8) of an inverted sawtooth structure are formed at both ends of the square pin (3); the connecting portions (8) are respectively inserted into connecting holes (10) respectively provided opposite to each other on the return torsion L (1) and the return torsion R (2); and inverted sawtooth portions (13) matching the connecting portions (8) are provided in the connecting holes (10).

4. The split return torsion device for a laparoscopic stapler according to claim 1, characterized in that: Cavities (9) are respectively provided on the surfaces of the restoring torsion L (1) and the restoring torsion R (2).

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