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:
Aug. 27, 2002
Filed:
May. 25, 2000
Applicant:
Inventors:
Bernd Nösel, Lütjensee, DE;
Michael Wiegand, Glinde, DE;
Assignee:
Olympus Winter & Ibe GmbH, Hamburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A16L 2/900 ;
U.S. Cl.
CPC ...
A16L 2/900 ;
Abstract
A trocar sleeve for introducing instruments into gas filled body spaces including an insertion tube and a valve chamber disposed proximally on it with a duckbill valve of elastic material. The duck bill value has a tubular body extending coaxially with respect to the axis of the insertion tube. An end of the body directed towards the insertion tube has two flat oblique walls forming a ridge with a slit extending therein transverse to the axis of the tube. The tubular body is oversized in a direction transverse to the slit with respect to the internal size of the valve chamber in the uninstalled rest state.