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A protection mechanism for preventing a second firing of a stapler, a stapler and a staple cartridge

A protection mechanism and secondary firing technology, applied in the field of medical devices, can solve the problems of increasing installation difficulty, inability to guarantee an empty nail cartridge protection mechanism, complex structure, etc., to prevent secondary firing, low production cost, and easy modification Effect

Active Publication Date: 2020-12-22
SUZHOU FRANKENMAN MEDICAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the structure of the empty staple cartridge protection device in the prior art is relatively complicated, which increases the difficulty of installation. After firing, it cannot ensure that the empty staple cartridge protection mechanism enters the locked position completely and stably. Therefore, a structure is required. A simple and stable locking empty nail cartridge protection mechanism to solve the problems in the prior art

Method used

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  • A protection mechanism for preventing a second firing of a stapler, a stapler and a staple cartridge
  • A protection mechanism for preventing a second firing of a stapler, a stapler and a staple cartridge
  • A protection mechanism for preventing a second firing of a stapler, a stapler and a staple cartridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 1-6 As shown, the present embodiment provides a protection mechanism for preventing the second firing of the stapler. Specifically, the stapler includes an execution end, and the execution end includes a staple cartridge accommodating portion 1, a staple cartridge 2, a pusher driver 3, and an anvil. The seat 8 and the connecting pipe 9, wherein the staple cartridge housing part 1 is fixedly connected to the connecting pipe 9, the anvil 8 is hinged to the connecting pipe 9, the staple cartridge 2 is installed in the nail cartridge containing part 1, and the nail pushing driver 3 passes through the connecting pipe The tube 9 is connected with the driving mechanism, and the upper surface of the pusher driver 3 includes a horizontal plane and an inclined plane; the pusher driver 3 can move between the initial position and the firing position under the driving of the drive mechanism; When the position is moving to the firing position, the inclined surface of ...

Embodiment 2

[0039]In this embodiment, the difference from Embodiment 1 is that the pressing member 5 is fixed on the staple cartridge 2, and when the pushing driver 3 moves from the initial position to the firing position, the pressing member 5 can be destroyed so that it is located at the disengagement position, wherein The pressing part 5 is made of easily destructible materials, such as brittle plastics, or thin elastic parts, so that when the push nail driver 3 is pushed forward, the structure of the pressing part 5 is directly destroyed, so that its position is invalid. At this time, the state of the broken pressing member 5 is the disengagement position. In this embodiment, the pressing member 5 adopts such an arrangement structure, which can be more convenient, and the installation process is also simpler. Or in other ways, as long as the pressing member is set to be able to be pushed away from the current position, the design that no longer presses down on the push nail driver aft...

Embodiment 3

[0041] In this embodiment, a staple cartridge is protected, and the staple cartridge has a lower pressing member 5, which is an L-shaped stop pin, and the L-shaped stop pin is pivotally connected with the staple cartridge 2, and the L-shaped stop pin includes a vertical The straight part 51 and the horizontal part 52 perpendicular to the vertical part 51, the vertical part 51 and the staple cartridge 2 are pivotally connected, and the axis of the pivot connection is perpendicular to the nail pushing direction of the push nail driver 3, and the nail cartridge 2 also includes a The accommodating cavity 21 that accommodates the horizontal portion 52 of the L-shaped limiting pin, when the L-shaped limiting pin is in the depressed position, the horizontal portion 52 of the L-shaped limiting pin is located in the accommodating cavity 21, and the staple cartridge is used to cooperate with the In the stapler of Embodiment 1, it forms the effect of protecting the empty staple cartridge ...

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PUM

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Abstract

The present invention provides a protection mechanism for preventing the secondary firing of a stapler. The stapler includes a staple cartridge accommodating part, a staple cartridge, and a pusher driver. The upper surface of the pusher driver includes a horizontal plane and an inclined surface; the pusher driver can Move between the initial position and the fired position; the protection mechanism includes an elastic biasing part, a pressing part, a limit groove and a limit pin; when the push nail driver is in the initial position, the elastic biasing part is arranged in the nail cartridge accommodating part and provide an upward biasing force to the bottom of the push nail driver. The limit groove is arranged on the horizontal plane of the push nail drive. The present invention can realize the effect of preventing the secondary firing of the stapler through the cooperation of the elastic biasing part, the pressing part, the limit groove and the limit pin, and has low manufacturing cost and simple structure.

Description

technical field [0001] The invention relates to a medical device, in particular to a protection mechanism for preventing a stapler from firing again, a stapler and a staple cartridge. Background technique [0002] As a medical device used to replace traditional manual suturing, the stapler is easy to use, tight and suitable for tightness, especially its fast suturing, easy operation, and few side effects and surgical complications. Lesions can be resected, which is favored and respected by clinical surgeons at home and abroad. A surgical stapler, such as an endoscopic cutting stapler, may include an end effector that is movable or articulated relative to the elongate shaft assembly. End effectors are typically configured to hold tissue to be resected between clamping devices, wherein the clamping devices typically include structures configured to receive a staple cartridge therein. The handle portion for operation is configured to control the closing of the clamping device...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/072
CPCA61B17/07207A61B2017/07271
Inventor 曹新东陆坚
Owner SUZHOU FRANKENMAN MEDICAL EQUIP
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