Patent ID: 9737299
Date: 2017-08-22
CPC Classifications: A61B

Claim:
1. A cartridge assembly, comprising a cartridge, a wedge and a cutting knife; wherein, the wedge is slidably mounted to the cartridge and configured to be slidable from a proximal end to a distal end of the cartridge; the cutting knife is positioned in a cutting slot provided in the cartridge; one end of the cutting knife that is opposite to a staple exiting surface of the cartridge is pivotally connected to the wedge via a pin; an axis of the pin is perpendicular to the cutting slot; a proximal surface of the cutting knife contacts against a knife pushing bar of a surgical instrument; and an elastic resetting member is arranged between the cutting knife and the wedge, under which a cutting edge portion of the cutting knife is received within the cutting slot of the cartridge before being urged by the knife pushing bar, and the cutting knife rotates about the pin into a cutting position when being urged by the knife pushing bar.