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EP0216138A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Endoscope

Assignee: Olympus Corp
•
Filing: 1986-08-19
•
Granted: —
•
Expires: 2006-08-19
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Abstract

Abstract In this invention, an attachment (131 for changing the viewing angle aperture or direction of the field of view, whilst protecting a tip portion and interior, removably fitted to a tip extension portion (29) of an endoscope insertion sheath (11) when fitted thereon. A connecting member (17) forming part of the attachment serves to pull on and fix this attachment (13) i rotatably and non-removably fitted on the tip extension portion (29) of the endoscope insertion sheath (11). In order that this connecting member (17) may not be pulled off the tip extension portion (29) of the endoscope insertion sheath (11). a groove (18) may be formed in the outer periphery of the tip extension portion (29), and engaging members 119) provided on the connecting member (17) inwardly engage this groove (18), having an elastic deformability.

Inventors

  • 👤 Tsutomu Yamamoto

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 21:58
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00096; A61B1/00101; A61B1/00163; A61B1/00165

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 197 words
An endoscope attachment removably fitted on a tip portion of an endoscope insertion sheath comprising a recess in which the tip (2) of an endoscope insertion sheath (I ) may be engaged, with a female screw-thread (5) provided on the inner peripheral wall of this recess; a connecting member (17) for rotatably fitting to the outer periphery of the tip portion in a non-removable manner on an endoscope insertion sheath having on its outer periphery a male screw-thread (6) for engaging the female screw-thread of the attachment to pull the attachment into place and fix it securely by engagement in a peripheral groove (8) formed on the outer face of the tip portion of an endoscope insertion sheath and in which the tip side of the connecting member will be positioned when the connecting member is fitted in place, characterised in that a plurality of engaging members (19) are provided extending from the tip of the connecting member (17), with an elastic deformability acting in a diametric contracting direction, to engage a surface of the outer periphery of the tip extension of the associated endoscope insertion sheath (11) and prevent the connecting portion from being pulled out.
Claim 2
Dependent Claim 197 words
An endoscope attachment removably fitted on a tip portion of an endoscope insertion sheath comprising a recess in which the tip (2) of an endoscope insertion sheath (I ) may be engaged, with a female screw-thread (5) provided on the inner peripheral wall of this recess; a connecting member (17) for rotatably fitting to the outer periphery of the tip portion in a non-removable manner on an endoscope insertion sheath having on its outer periphery a male screw-thread (6) for engaging the female screw-thread of the attachment to pull the attachment into place and fix it securely by engagement in a peripheral groove (8) formed on the outer face of the tip portion of an endoscope insertion sheath and in which the tip side of the connecting member will be positioned when the connecting member is fitted in place, characterised in that a plurality of engaging members (19) are provided extending from the tip of the connecting member (17), with an elastic deformability acting in a diametric contracting direction, to engage a surface of the outer periphery of the tip extension of the associated endoscope insertion sheath (11) and prevent the connecting portion from being pulled out.
Claim 3
Dependent Claim 16 words
An endoscope attachment according to Claim 1, characterised in that said connecting member (17) is tubular.
Claim 4
Dependent Claim 33 words
An endoscope attachment according to Claim 1, characterised in that said engaging members (19) are given an inward elastic deformability acting to contract them, a plurality of thin, longitudinal slits (20) being provided.
Claim 5
Dependent Claim 32 words
An endoscope attachment according to Claim 1, characterised in that said connecting member (17) has a finger- gripping knurled surface (21) formed on the-outer surface to the rear of the male screw-thread.
Claim 6
Dependent Claim 30 words
An endoscope having an insertion sheath (11) with a thinner forwardly-extending portion (29), characterised in that it carries an endoscope attachment according to any one of Claims 1 to 4.

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