GB2171537A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Shaped optical system shaft for an endoscope
Assignee: Richard Wolf GmbH
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Filing: 1986-01-21
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Granted: —
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Expires: 2006-01-21
Abstract
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.
Inventors
- 👤 Siegfried Hiltebrandt
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 05:22
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00071; A61B1/00163
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
57 words
An optical system for an endoscope, comprising a shaft receiving optical guide elements, which is insertible through a trocar sleeve or guide shaft into a bodily cavity for examination, wherein said optical system shaft tapers conically towards its distal extremity and wherein on the proximal side of the taper there is provided at least one peripheral constriction.
Claim 2
Dependent Claim
57 words
An optical system for an endoscope, comprising a shaft receiving optical guide elements, which is insertible through a trocar sleeve or guide shaft into a bodily cavity for examination, wherein said optical system shaft tapers conically towards its distal extremity and wherein on the proximal side of the taper there is provided at least one peripheral constriction.
Claim 3
Dependent Claim
23 words
An optical system according to claim 1, wherein said constriction is in the form of an annular concavity extending circumferentially around the shaft.
Claim 4
Dependent Claim
21 words
An optical system according to claim 1, wherein said constriction is in the form of a helical groove around the shaft.
Claim 5
Dependent Claim
23 words
An optical system according to claim 1 or claim 2, wherein said constriction is shallow in relation to the diameter of the shaft.
Claim 6
Dependent Claim
16 words
An optical system according to any preceding claim wherein said constriction is of substantially arcuate cross-section.
Claim 7
Dependent Claim
48 words
An optical system for an endoscope substantially as herein described with reference to the accompanying drawing. Printed in the United Kingdom for Her Majesty's Stationery Office, Dd 8818935, 1986, 4235. Published at The Patent Office, 25 Southampton Buildings, London, WC2A 11 AY, from which copies may be obtained.
Claim 8
Dependent Claim
48 words
An optical system for an endoscope substantially as herein described with reference to the accompanying drawing. Printed in the United Kingdom for Her Majesty's Stationery Office, Dd 8818935, 1986, 4235. Published at The Patent Office, 25 Southampton Buildings, London, WC2A 11 AY, from which copies may be obtained.
References Cited (Backward Citations)
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