Patent ID: 9629634
Date: 2017-04-25
CPC Classifications: A61B,F04C

Claim:
1. An introducer accessory for being fitted with a circular stapler, the circular stapler comprising an anvil assembly and a staple cartridge assembly, the staple cartridge assembly including a staple cylinder and a staple cartridge being mutually fixed and a trocar disposed in the staple cartridge, a proximal end of the staple cylinder being provided with at least one through hole; wherein the introducer accessory at least comprises a sleeve portion sleeved around a distal end of the circular stapler and an introducing portion disposed at a distal end of the sleeve portion; a maximum outer diameter of the introducing portion is equal to a minimum outer diameter of the sleeve portion; the introducing portion comprises a flexible plastic spiral member and a traction member; the flexible plastic spiral member is in a conical shape with a cavity and has a distal end and a proximal end, outer diameter of the flexible plastic spiral member is gradually increased from the distal end to the proximal end; the proximal end of the flexible plastic spiral member is connected with the sleeve portion; and the traction member extends in the cavity of spiral member to connect with the distal end of the flexible plastic spiral member such that when the traction member is pulled by an external force, the distal end of the flexible plastic spiral member is pulled inward by the traction member and through the cavity which causes the flexible plastic spiral member to be unwound internally and spirally in a sequence from distal to proximal and finally to form a strip body to withdraw from the circular stapler via the through hole.