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:
Nov. 23, 1999
Filed:
Jun. 23, 1997
Michael S Chu, Brookline, MA (US);
Yem Chin, Burlington, MA (US);
James Bates, Bloomington, IN (US);
Boston Scientific Corporation, Watertown, MA (US);
Abstract
A biopsy needle device includes an outer cannula having a pointed, tissue penetrating distal end and a side-notched stylet located within the cannula. The stylet and cannula are axially movable with respect to each other. The stylet is constructed from a solid rod having a notch near the distal end. The notch is bordered in portions along its length by a walled region to at least in part define a protected sample-containment space. The stylet includes a pointed, tissue penetrating distal end. The notch defines a full cylindrical region and the walled region has a semi-circular cross-section. The cross sectional area of the notch is between about 90-97% of the diameter of the rod. The wall thickness of the walled region is in the range of 0.008'-0.013'. A method of taking a biopsy sample from a hard cancerous lesion is described.