A manual and automatic electric stapler

Abstract

The present invention provides a manual-automatic electric stapler, which relates to the field of electric staplers and includes a shell body, an electric drive mechanism, a firing mechanism, a bending mechanism and a handle mechanism, wherein a transmission gear meshes with a firing gear or one of the bending gears for transmission, and when the transmission gear drives the bending gear to rotate, the bending screw is threadedly connected to the bending gear, thereby realizing the direction change; when the transmission gear drives the firing gear to rotate, the firing screw is threadedly connected to the firing gear, thereby realizing the firing process; under normal conditions, the motor drives the motor shaft to rotate; when the motor fails to work, the staff can drive the firing gear or the bending gear to rotate through the handle mechanism, thereby eliminating the need for surgical personnel to replace a new stapler and alleviating the patient's pain.

Description

Technical Field

[0001] The present invention relates to the field of electric staplers, and in particular to a manual-automatic electric stapler. Background Art

[0002] Electric staplers are used for resection, transection and anastomosis of lungs, bronchial tissues, stomachs and intestines in open or laparoscopic surgical operations. Existing electric staplers include cutting staplers and disposable stapler magazines. During use, the cutting stapler drives the disposable stapler magazine to achieve direction change and firing, so that the stapler has the function of automatic direction change and firing. During the operation, it is inevitable that the motor will accidentally lose power or run out of power. When this happens, the surgical staff has to quickly interrupt the operation and replace the new electric stapler, but this replacement process will greatly increase the patient's pain. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a manual-automatic electric stapler. When the motor fails, the handle mechanism drives the firing gear or the bending gear to rotate, thereby eliminating the need for surgical personnel to replace a new stapler.

[0004] The present invention is realized by the following technical scheme: a manual-automatic electric stapler, comprising a shell body, an electric drive mechanism, a firing mechanism, a bending mechanism and a handle mechanism, wherein the electric drive mechanism, the firing mechanism and the bending mechanism are all located in the shell body, wherein:

[0005] The firing mechanism includes a firing gear and a firing screw, and the firing screw is threadedly connected to the firing gear;

[0006] The bending mechanism includes a bending gear and a bending screw, the bending screw is threadedly connected to the bending gear, the bending gear is connected to the firing gear through a connecting shaft, and the central axes of the bending gear and the firing gear coincide, and the bending gear and the firing gear are both rotationally connected to the connecting shaft;

[0007] The electric drive mechanism includes a motor, a motor shaft and a transmission gear. The motor drives the transmission gear to rotate through the motor shaft, and the transmission gear meshes with the firing gear or the bending gear for transmission.

[0008] The handle mechanism and the electric drive mechanism are respectively located on the upper and lower sides of the connecting shaft;

[0009] The handle mechanism drives the firing gear or the bending gear to rotate.

[0010] The transmission gear of the present invention meshes with one of the firing gear or the bending gear for transmission. When the transmission gear drives the bending gear to rotate, the bending screw is threadedly connected to the bending gear, thereby realizing the change of direction; when the transmission gear drives the firing gear to rotate, the firing screw is threadedly connected to the firing gear, thereby realizing the firing process; under normal conditions, the motor drives the motor shaft to rotate; when the motor fails to work, the staff can drive the firing gear or the bending gear to rotate through the handle mechanism, thereby eliminating the need for surgical personnel to replace a new stapler and alleviating the patient's pain.

[0011] According to the above technical solution, preferably, the handle mechanism includes a manual gear and a manual rotating cap. When the motor fails, the surgeon rotates the manual rotating cap, the manual rotating cap drives the manual gear to rotate, and the manual gear engages with the firing gear or the bending gear for transmission, thereby realizing the firing process or changing direction.

[0012] According to the above technical solution, preferably, a first spring is provided between the manual gear and the connecting shaft. Under the action of the first spring, the manual gear does not mesh with the bending gear or the firing gear. A plurality of first connecting parts are provided on the outer side of the manual gear. A plurality of second connecting parts matched with the first connecting parts are provided in the middle part of the manual rotating cap. The handle mechanism also includes an adjusting bolt. A screw hole matched with the adjusting bolt is provided in the middle part of the manual rotating cap. The lower end of the adjusting bolt is against the manual gear. The staff can rotate the adjusting bolt so that the adjusting bolt presses down the manual gear until the manual gear meshes with one of the bending gear or the firing gear.

[0013] According to the above technical solution, preferably, the first connecting part is a vertical key or a keyway, and the second connecting part is a keyway matched with the vertical key or a vertical key matched with the keyway. With the cooperation of the vertical key and the keyway, the manual rotating cap can drive the manual gear to rotate synchronously, and when the surgeon rotates the adjusting bolt, the vertical key and the keyway are in a sliding connection state.

[0014] According to the above technical solution, preferably, a return spring is sleeved on the connecting shaft, and the return spring is used to push the firing gear and the bending gear toward the front side, so that in a normal state, the bending gear is meshed with the transmission gear.

[0015] According to the above technical solution, preferably, the shell body includes a trigger assembly, the trigger assembly includes a trigger and a connecting rod, the middle part of the trigger is hinged to the shell body, the two ends of the connecting rod are respectively hinged to the upper end of the trigger and the connecting shaft, the middle part of the connecting rod is hingedly connected to the shell body, and the staff pulls the trigger, and the trigger drives the connecting shaft, the bending gear and the firing gear to slide forward synchronously through the connecting rod, so that the bending gear disengages from the transmission gear until the firing gear is meshed with the transmission gear.

[0016] The beneficial effects of the present invention are as follows: the transmission gear of the present invention meshes with one of the firing gear or the bending gear for transmission, and when the transmission gear drives the bending gear to rotate, the bending screw is threadedly connected to the bending gear, thereby realizing the change of direction; when the transmission gear drives the firing gear to rotate, the firing screw is threadedly connected to the firing gear, thereby realizing the firing process; under normal conditions, the motor drives the motor shaft to rotate; when the motor fails to work, the staff can drive the firing gear or the bending gear to rotate through the handle mechanism, thereby eliminating the need for surgical personnel to replace a new stapler and alleviating the patient's pain. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the main structure according to an embodiment of the present invention is shown.

[0018] Figure 2 A schematic diagram of a right half-section structure according to an embodiment of the present invention is shown.

[0019] Figure 3 A schematic cross-sectional structure diagram of an embodiment according to the present invention is shown.

[0020] Figure 4 A schematic diagram of the exploded structure of a handle mechanism according to an embodiment of the present invention is shown.

[0021] Figure 5 A schematic diagram of the three-dimensional structure of a manual rotating cap according to an embodiment of the present invention is shown.

[0022] In the figure: 1. shell body; 2. electric drive mechanism; 3. firing mechanism; 4. bending mechanism; 6. handle mechanism; 7. motor; 8. motor shaft; 9. transmission gear; 10. first connecting part; 11. second connecting part; 12. firing gear; 13. firing screw; 14. bending gear; 15. bending screw; 16. connecting shaft; 17. reset spring; 18. vertical key; 19. keyway; 20. trigger assembly; 21. trigger; 22. connecting rod; 23. manual gear; 24. manual rotating cap; 25. first spring; 26. adjusting bolt. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and the best embodiments.

[0024] As shown in the figure, the present invention provides a manual-automatic electric stapler, including a shell body 1, an electric drive mechanism 2, a firing mechanism 3, a bending mechanism 4 and a handle mechanism 6, and the electric drive mechanism 2, the firing mechanism 3 and the bending mechanism 4 are all located in the shell body 1, wherein the shell body 1 includes a trigger assembly 20, the firing mechanism 3 includes a firing gear 12 and a firing screw 13, and the firing screw 13 is threadedly connected to the firing gear 12; the bending mechanism 4 includes a bending gear 14 and a bending screw 15, and the bending screw 15 is threadedly connected to the bending gear 14, and the bending gear 14 is connected to the bending gear 14 through the connecting shaft 1 6 is connected to the firing gear 12, and the central axes of the bending gear 14 and the firing gear 12 coincide with each other, and the bending gear 14 and the firing gear 12 are both rotatably connected with the connecting shaft 16; the electric drive mechanism 2 includes a motor 7, a motor shaft 8 and a transmission gear 9, the motor 7 drives the transmission gear 9 to rotate through the motor shaft 8, and the transmission gear 9 is meshed with the firing gear 12 or the bending gear 14 for transmission; the handle mechanism 6 and the electric drive mechanism 2 are respectively located on the upper and lower sides of the connecting shaft 16; when the motor fails, the handle mechanism 6 drives the firing gear 12 or the bending gear 14 to rotate, and the handle mechanism 6 includes a manual gear 23 and a manual rotating cap 24, the surgical staff rotates the manual rotating cap 24, the manual rotating cap 24 drives the manual gear 23 to rotate, the manual gear 23 is meshed with the firing gear 12 or the bending gear 14 for transmission, thereby realizing the firing process or changing direction, and at the same time a first spring 25 is provided between the manual gear 23 and the connecting shaft 16, generally, under the action of the first spring 25, the manual gear 23 is not meshed with the bending gear 14 or the firing gear 12, a plurality of first connecting parts 10 are provided on the outer side of the manual gear 23, and a plurality of first connecting parts 10 are provided on the middle part of the manual rotating cap 24 The second connecting part 11 of the handle mechanism 6 also includes an adjusting bolt 26. A screw hole matched with the adjusting bolt 26 is opened in the middle of the manual rotating cap 24. The lower end of the adjusting bolt 26 abuts against the manual gear 23. The staff can rotate the adjusting bolt 26 to make the adjusting bolt 26 press down the manual gear 23 until the manual gear 23 is meshed with one of the bending gear 14 or the firing gear 12. A reset spring 17 is sleeved on the connecting shaft 16. The reset spring 17 is used to push the firing gear 12 and the bending gear 14 to the front side, so that under normal conditions, the bending gear 14 is meshed with the transmission gear 9.

[0025] According to the above embodiment, preferably, when the first connecting part 10 is a vertical key 18, the second connecting part 11 is a key slot 19 adapted to the vertical key 18; and when the first connecting part 10 is a key slot 19, the second connecting part 11 is a vertical key 18 adapted to the key slot 19. With the cooperation of the vertical key 18 and the key slot 19, the manual rotating cap can drive the manual gear 23 to rotate synchronously, and when the surgeon rotates the adjusting bolt 26, the vertical key 18 and the key slot 19 are in a sliding connection state.

[0026] The working process includes two switching modes: motor drive and handle drive. Under normal circumstances, the motor 7 is used for driving. Only when the motor 7 fails to work, it switches to the handle drive mode. The specific situation is as follows:

[0027] (1) Motor driving process:

[0028] Direction change phase: At this time, the trigger assembly 20 is in a relaxed state, the motor 7 drives the motor shaft 8 to rotate, the transmission gear 9 and the bending gear 14 mesh and rotate, the transmission gear 9 and the firing gear are not in contact, and the bending screw 15 is threadedly connected with the bending gear 14, thereby realizing the direction change;

[0029] Firing process stage: At this time, the staff presses the trigger assembly 20, and the bending gear 14 disengages from the transmission gear 9 until the transmission gear 9 and the firing gear 12 are meshed and transmitted. At this time, the firing screw 13 is threadedly connected with the firing gear 12, and the firing gear 12 drives the firing screw 13 to move forward and backward.

[0030] (2) Handle driving process:

[0031] When the motor 7 fails, the staff turns the adjusting bolt 26, and the adjusting bolt 26 pushes the manual gear 23 downward until the manual gear 23 is engaged with the bending gear 14 or the firing gear 12. At this time, the staff can complete the direction change and firing process by turning the manual rotating cap.

[0032] Furthermore, the trigger assembly 20 includes a trigger 21 and a connecting rod 22. The middle part of the trigger 21 is hinged to the shell body 1, and the two ends of the connecting rod 22 are respectively hinged to the upper end of the trigger 21 and the connecting shaft 16. The middle part of the connecting rod 22 is hingedly connected to the shell body 1. When the staff pulls the trigger 21, the trigger 21 drives the connecting shaft 16, the bending gear 14 and the firing gear 12 to slide forward synchronously through the connecting rod 22, so that the bending gear 14 disengages from the transmission gear 9 or the manual gear until the firing gear 12 is meshed with the transmission gear 9 or the manual gear.

[0033] The beneficial effects of the present invention are as follows: the transmission gear 9 of the present invention meshes with one of the firing gear 12 or the bending gear 14 for transmission. When the transmission gear 9 drives the bending gear 14 to rotate, the bending screw 15 is threadedly connected to the bending gear 14, thereby realizing the change of direction; when the transmission gear 9 drives the firing gear 12 to rotate, the firing screw 13 is threadedly connected to the firing gear 12, thereby realizing the firing process; under normal conditions, the motor 7 drives the motor shaft 8 to rotate; and when the motor 7 fails to work, the staff can drive the firing gear 12 or the bending gear 14 to rotate through the handle mechanism 6, thereby eliminating the need for surgical personnel to replace a new stapler and alleviating the patient's pain.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A manual-automatic electric stapler, characterized in that: It includes a shell body, an electric drive mechanism, a firing mechanism, a bending mechanism and a handle mechanism, wherein the electric drive mechanism, the firing mechanism and the bending mechanism are all located in the shell body, wherein: The firing mechanism comprises a firing gear and a firing screw, wherein the firing screw is threadedly connected to the firing gear; The bending mechanism includes a bending gear and a bending screw, wherein the bending screw is threadedly connected to the bending gear, the bending gear is connected to the firing gear via a connecting shaft, and the central axes of the bending gear and the firing gear coincide, and the bending gear and the firing gear are both rotationally connected to the connecting shaft; The electric drive mechanism comprises a motor, a motor shaft and a transmission gear, wherein the motor drives the transmission gear to rotate through the motor shaft, and the transmission gear meshes with the firing gear or the bending gear for transmission; The handle mechanism and the electric drive mechanism are respectively located on the upper and lower sides of the connecting shaft; The handle mechanism drives the firing gear or the bending gear to rotate.

2. The manual-automatic electric stapler according to claim 1, characterized in that: The handle mechanism comprises a manual gear and a manual rotating cap. The manual gear is meshed with a firing gear or a bending gear for transmission, and the manual rotating cap drives the manual gear to rotate.

3. The manual-automatic electric stapler according to claim 2, characterized in that: A first spring is provided between the manual gear and the connecting shaft, a plurality of first connecting parts are provided on the outer side of the manual gear, a plurality of second connecting parts matched with the first connecting parts are provided in the middle part of the manual rotating cap, the handle mechanism also includes an adjusting bolt, a screw hole matched with the adjusting bolt is provided in the middle part of the manual rotating cap, and the lower end of the adjusting bolt is against the manual gear.

4. The manual-automatic electric stapler according to claim 3, characterized in that: The first connecting portion is a vertical key or a keyway, and the second connecting portion is a keyway matched with the vertical key or a vertical key matched with the keyway.

5. A manual-automatic electric stapler according to any one of claims 1 to 4, characterized in that: A return spring is sleeved on the connecting shaft, and the return spring is used to push the firing gear and the bending gear toward the front side.

6. The manual-automatic electric stapler according to claim 5, characterized in that: The shell body includes a trigger assembly, which includes a trigger and a connecting rod. The middle part of the trigger is hinged to the shell body, the two ends of the connecting rod are respectively hinged to the upper end of the trigger and the connecting shaft, and the middle part of the connecting rod is hingedly connected to the shell body.

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