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. 18, 1994
Filed:
Dec. 12, 1991
Applicant:
Inventor:
Siegfried Hiltebrandt, Knittlingen, DE;
Assignee:
Richard Wolf GmbH, Knittlingen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604264 ; 128-3 ; 128-4 ; 604 33 ; 604158 ; 604164 ; 604165 ; 604166 ; 604167 ; 604169 ;
Abstract
The invention relates to a trocar sleeve having a piston of a piston valve which can be brought into the open position against spring action by means of pressure on an actuation handle, which piston has a bore corresponding to the diameter of the access channel of the trocar sleeve. The valve piston can be fixed in its open position in the valve housing against its spring loading by a catch which can be released by hand.