U.S. Patent 7967181 was awarded to Tyco Healthcare Group LP on 2011-06-28 and describes a “Rotary knife cutting systems.” This patent has been cited 258 times by other U.S. patents which places it in the top 500 cited patents since 2010 according to our law firm research, and makes it of the most innovative medical technology patents in the field of instruments. The abstract states:

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. Link: U.S. Patent 7967181

This patent was originally filed on 2008-08-01 which gives it a processing time of 1061 days, compared to an average processing time of 1097 in the field. Tyco Healthcare Group LP has 1168 total patents. The first named inventor is Eric J. Taylor of East Hampton, NY. The primary examiner was Paul R Durand.

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