Patent · US Active

Rotary knife cutting systems

US7967181B2 · kind B2 · utility

1,675Cited by

5References

10Claims

0Family size

Assignee

Tyco Healthcare Group LP · US

Inventors

Frank J. Viola · Sandy Hook, US
Eric Taylor · East Hampton, US

Key dates

Filing date	Aug 1, 2008
Grant date	Jun 28, 2011
Priority date	—
Expiry date	Mar 11, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T83/483
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

There are disclosed rotary cutting systems for use with circular surgical stapling devices. The rotary cutting systems generally include a circular knife blade and a mainspring for imparting rotary motion to the circular knife blade. A latch mechanism is provided to maintain the knife blade on a linear travel path during a first predetermined distance and to release the circular knife blade for rotation due to the bias of the mainspring along a second predetermine distance. The circular knife blade may be rotated by the mainspring itself or, in an alternative embodiment, may be driven by frictional engagement with a rotational hammer.

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