Patent US3294896A successfully refreshed from Google Patents.
Patent DE2218901B2 successfully refreshed from Google Patents.
DE2218901B2
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Operating instrument insertion trocar - comprises thin strip wound in spiral round sleeve and fixed to sleeve
Assignee: Individual
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Filing: 1972-04-19
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Granted: —
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Expires: 1992-04-19
Abstract
Abstract The trocar is for the insertion of operating instruments in body cavities, having a sleeve accommodating a sliding mandrel for an interchangeable instrument. A thin strip of material increases the friction with which the sleeve slides in the cavity. The thin strip of material (2) is wound in a spiral onto the sleeve and fixed to it, typically in the form of a coarse-pitch spiral of wire situated near the proximal end. The design appreciably reduces friction when inserting and removing, since the sleeve is screwed in and out.
Inventors
- 👤 Karl 7200 Tuttlingen Storz
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-23 20:08
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B2017/348; A61B2017/3482; A61B2017/349
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