Patent · US Active

Surgical stapling head assembly with a rotary cutter

US8172123B2 · kind B2 · utility

2Cited by

3References

9Claims

0Family size

Assignee

SUZHOU TOUCHSTONE INTERNATIONAL MEDICAL SCIENCE CO., LTD. · CN

Inventors

Wangdong Chen · 安丰镇, CN
Wei Xu · Zhejiang, CN
Shouye Xie · 安丰镇, CN

Key dates

Filing date	Jun 26, 2008
Grant date	May 8, 2012
Priority date	—
Expiry date	Apr 10, 2029

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B2017/07285
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A rotary cutter head for a surgical stapling instrument includes a staple cartridge, an annular cutter, a staple-pushing seat and a staple chamber. The staple-pushing seat and the annular cutter are connected by a bearing structure and provided with guide projections. The inner wall of the staple cartridge or the outboard of the expand-stopping tube is integral injection molded with a metal cylinder insert, on which is provided with a forward helix track and a backward track mutually independent and communicated with each other. The guide projections are mated with the two guide tracks and guiding the annular cutter to move along a helical path.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.