MEDICAL ANASTOMOSIS DEVICE

摘要

A medical anastomosis device (100), having a firing assembly (50), a staple anvil (30), a staple anvil assembly (34), and a staple cartridge assembly (32); the firing assembly (50) includes a staple cartridge push rod (54) provided with a stop pin (542) thereon; the staple anvil (30) is provided with a safety block (38) therein capable of coordinating with the stop pin (542); the safety block (38) is provided with a clamping groove (384) thereon; when the anastomosis device (100) is in an initial status, the safety block (38) and the stop pin (542) do not contact each other; when the anastomosis device (100) is in a firing status, the movement of the safety block (38) is restricted, and the clamping groove (384) is located on a movement route from the distal end of the medical anastomosis device (100) to the proximal end; and when the anastomosis device (100) returns to the initial status after being fired, the stop pin (542) is clamped in the clamping groove (384), and the safety block (38) limits the stop pin (542) in the direction from the proximal end of the medical anastomosis device (100) to the distal end. The three status jointly compose the complete firing process of the staple cartridge assembly (32), preventing a second firing of the staple cartridge push rod (54) to ensure operation safety.

主权项

1. A medical anastomosis device comprising:
a firing assembly comprising a staple cartridge push rod and a banking pin; an anvil seat comprising a safety block to mate with the banking pin, the safety block defining a slot; an anvil assembly; and a staple cartridge assembly; wherein, in operation, the firing assembly is used for driving the staple cartridge assembly to move from a proximal end of the anvil seat to a distal end of the anvil seat; when the medical anastomosis device is in an initial status, the safety block does not interfere with the banking pin; when the medical anastomosis device is in a firing status, movement of the safety block is restricted, and the slot is located in a movement route of the banking pin when the banking pin moves from a distal end of the medical anastomosis device to a proximal end of the medical anastomosis device; and when the medical anastomosis device returns to the initial status after being completely fired, the banking pin is locked in the slot and restricted by the safety block along a direction from the proximal end of the medical anastomosis device to the distal end of the medical anastomosis device.