The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 03, 2009
Filed:
Dec. 17, 2001
Douglas D. Sjostrom, Tewksbury, MA (US);
Douglas D. Sjostrom, Tewksbury, MA (US);
Smith & Nephew, Inc., Memphis, TN (US);
Abstract
A cutting instrument includes an outer member having a cutting portion, and a helical knife coupled to the outer member for rotation relative to the outer member. At least a portion of the helical knife extends distally beyond the cutting portion. The instrument includes an inner member received within the outer member. The helical knife is at a distal end of the inner member. A method of cutting includes slicing into tissue with a helical knife to draw tissue proximally toward a cutting portion, and cutting the tissue with the cutting portion. The helical knife is provided on an inner member, and the cutting portion is provided on an outer member. Cut tissue is transported along a helical channel defined by the helical knife and aspirated through a hollow interior in the inner member.