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:
Dec. 26, 1995
Filed:
Mar. 14, 1994
Applicant:
Inventor:
John R Haaga, Chagrin Falls, OH (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128754 ;
Abstract
An improved, cone shaped puncturing/cutting tip is provided for the inner cannula or alternative, the stylet, of a biopsy needle. The cone shaped tip is defined by a frontal vertex co-incident with the center of the cannula or the stylet and a circular base of diameter about equal that of the cannula or stylet. The surface of the cone shaped tip end includes at least three circumferentially spaced, longitudinally extending cutting vane edges extending from the vertex to the base and is hollowed between adjacent vane cutting edges whereby cutting penetration of said tip to the site is enhanced without significant vertex deflection of the point during penetration.