US5035232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractor
Assignee: Aesculap AG
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Filing: 1988-10-21
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Granted: 1991-07-30
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Expires: 2008-10-21
Abstract
Abstract In a retractor with a retractor blade, a handle, a fiber-optical light guide for illuminating the point of engagement of the retractor and a connector for connecting a fiber-optical cable to the fiber-optical light guide, with the fiber-optical light guide comprising a bent, tubular sheath which extends through the handle and along part of the retractor blade and in which a glass fiber bundle is embedded, in order to improve resterilizability, with the retractor being at the same time capable of being disassembled, a sheath that comprises fixing elements for detachably securing the retractor blade on the sheath, and the handle being positioned loosely on the rear end of the sheath and fixed in this position by a detachable holding element.
Inventors
- 👤 Theodor Lutze
- 👤 Dieter Weisshaupt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:44
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
113 words
Retractor with a retractor blade, a handle, a fiber-optical light guide for illuminating a point of engagement of said retractor and a connector for connecting a fiber-optical cable to said fiber-optical light guide, said fiber-optical light guide comprising a bent, tubular sheath having a rear end which extends through said handle and in which a glass fiber bundle is embedded, wherein a front portion of said sheath extends from said handle to support said retractor blade and comprises fixing elements for detachably securing said retractor blade on said sheath, and wherein said handle is positioned loosely on the rear end of said sheath and fixed in this positioned by a detachable holding element.
Claim 2
Dependent Claim
113 words
Retractor with a retractor blade, a handle, a fiber-optical light guide for illuminating a point of engagement of said retractor and a connector for connecting a fiber-optical cable to said fiber-optical light guide, said fiber-optical light guide comprising a bent, tubular sheath having a rear end which extends through said handle and in which a glass fiber bundle is embedded, wherein a front portion of said sheath extends from said handle to support said retractor blade and comprises fixing elements for detachably securing said retractor blade on said sheath, and wherein said handle is positioned loosely on the rear end of said sheath and fixed in this positioned by a detachable holding element.
Claim 3
Dependent Claim
17 words
Retractor according to claim 1, wherein said sheath has a plane contact surface for said retractor blade.
Claim 4
Dependent Claim
21 words
Retractor according to claim 1, wherein a portion of said sheath against which said retractor blade rests is of rectangular cross-section.
Claim 5
Dependent Claim
27 words
Retractor according to claim 1, wherein the glass fibers in said bundle are adhesively bonded to one another and to at least a portion of said sheath.
Claim 6
Dependent Claim
59 words
Retractor according to claim 1, wherein said sheath has a notch or groove extending transversely to its longitudinal direction for receiving an end of said retractor blade near said handle, and wherein a detent element is arranged at a front end of said sheath and forms a releasable detent connection with a complementary detent element on said retractor blade.
Claim 7
Dependent Claim
48 words
Retractor according to claim 5, wherein said detent element on said sheath is a wedge-shaped projection having a supporting surface at a top thereof extending transversely to a plane of said retractor blade, and wherein a recess is arranged in said retractor blade as a complementary detent element.
Claim 8
Dependent Claim
26 words
Retractor according to claim 6, wherein an inclined depression adjoins a top edge of said recess in said retractor blade on a side facing said sheath.
Claim 9
Dependent Claim
20 words
Retractor according to claim 5, wherein said groove or notch is arranged in a relatively thick portion of said sheath.
Claim 10
Dependent Claim
17 words
Retractor according to claim 8, wherein said relatively thick portion forms a front stop for said handle.
Claim 11
Dependent Claim
25 words
Retractor according to claim 1, wherein said retractor blade has guiding surfaces which rest against sides of said sheath in the vicinity of said handle.
Claim 12
Dependent Claim
36 words
Retractor according to claim 1, wherein said connector comprises a coupling ring screwed onto a portion of said sheath protruding from said handle when the latter is positioned thereon to enable connection with said fiber-optical cable.
Claim 13
Dependent Claim
24 words
Retractor according to claim 11, wherein said coupling ring rests against said handle and presses the handle against a front stop of said sheath.
Claim 14
Dependent Claim
23 words
Retractor according to claim 1, wherein said retractor blade is of band-shaped or strip design in an area of contact with said sheath.
Claim 15
Dependent Claim
36 words
Retractor according to claim 10, wherein said guiding surfaces are formed by opposite inside surfaces of prongs which protrude at an end of said retractor blade and laterally embrace a groove or notch of said sheath.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-29 | 1995-01-28 | 1995-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-29 | 1999-01-28 | 1999-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-29 | 2003-01-28 | 2003-07-30 | $7700.00 | Window Closed / Lapsed |