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. 14, 1999
Filed:
Dec. 16, 1996
Applicant:
Inventors:
Siegfried Riek, 78628 Rottweil, DE;
Karl-Heinz Bachmann, 78667 Villingendorf, DE;
Thomas Gaiselmann, 78667 Villingendorf, DE;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604272 ; 604264 ; 128-4 ;
Abstract
A medical needle for endoscopic surgery has an external cannula tube in which a protective element is mounted so that it can be shifted axially against a spring. The distal, front protective surface of the protective element in a forward position projects beyond the sharp tip of the cannula tube and in a rear position is behind this tip. The protective surface of the protective element is transparent and can be observed through an optical system installed in the protective element.