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:
Jan. 16, 1996
Filed:
Nov. 30, 1994
Harold D Waitz, Berkeley, CA (US);
Hal Sternberg, Berkeley, CA (US);
Paul E Segall, Berkeley, CA (US);
Bruce Cohen, Richmond, CA (US);
BioTime, Inc., Berkeley, CA (US);
Abstract
The invention is a microcannula which comprises a hollow tube having a small cross sectional size and a side beveled tip wherein the angle of the bevel is about 25 degrees. A segment of the hollow tube distal to the beveled tip has an expanded outside diameter which may be provided by a tightly fitting ring member which may be moved to a desired position on the outside of the hollow tube. The tight fit of the ring is preferably obtained through an interference fit between the ring and the out side surface of the hollow tube. A conically tiped trochar is fitted tightly but removably in the lumen of the hollow tube. The trochar may be provided with a flattened or swedged segment.