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:
Mar. 01, 1994
Filed:
Feb. 19, 1993
Applicant:
Inventor:
Michael Zimmermann, St. Wendel, DE;
Assignee:
Fresenius AG, Bad Homburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604272 ; 604274 ;
Abstract
The invention concerns a cannula comprising a cannula tube with a preferably rigid upper section, an end section which is bent laterally and a hook-shaped curved section which has in its concave side a tangentially inward ground lumen opening. The lumen opening has a sharply inwardly directed rear edge. This results in the advantage that during piercing of natural and synthetic walls the cutting of plugs from the material to be perforated is avoided.