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:
May. 20, 1986
Filed:
Nov. 04, 1983
Applicant:
Inventor:
Stephen Pearson, Ingleside, IL (US);
Assignee:
Baxter Travenol Laboratories, Inc., Deerfield, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ; A61M / ; A61M / ;
U.S. Cl.
CPC ...
604411 ; 604 88 ; 604410 ; 604414 ; 604416 ;
Abstract
A cannula assembly especially for medical use is disclosed which virtually eliminates coring during the piercing of a barrier. The cannula assembly includes a hollow cylindrical shank and a piercing tip removably mounted in and closing one end of the shank. Pressurized introduction of fluid through the shank forces the piercing tip out of engagement with the shank, placing opposite sides of the barrier in fluid communication.