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:
Jul. 28, 1987
Filed:
Feb. 05, 1986
Applicant:
Inventor:
Siegfried Hiltebrandt, Knittlingen, DE;
Assignee:
Richard Wolf GmbH, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128-4 ;
Abstract
The shaft of an endoscope for passing through a trocar sleeve or a guiding shaft is tapered towards the distal extremity, and this taper is followed proximally by at least one shallowly concave peripheral constriction. The distal objective of the endoscope is thus spaced from the inner walls and distal edges of the trocar sleeve or guiding shaft, so that residues on these inner walls or edges do not contaminate or obscure objective but are instead scraped off by the peripheral constriction.