Patent US2299942A successfully refreshed from Google Patents.
US4273131A
Expired / Lapsed
US
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Surgical stylet
Assignee: California Medical Developments Inc
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Filing: 1979-06-18
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Granted: 1981-06-16
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Expires: 1999-06-18
Abstract
Abstract The surgical stylet formed as an elongated, thin member which includes a metallic core which is capable of being bent and remain stationary in any particular desired configuration. A rigid plastic is extruded over the core with the fore end of the core being exposed. The fore end of the core includes an enlarged section. The outermost tip of the fore end is smoothly contoured. A second exterior covering is located about the fore end and extends a short distance beyond the tip. The second exterior covering is formed of a plastic substantially softer than the first covering. The second exterior covering is secured to the fore end with the enlarged section of the fore end to facilitate this securement. The thickness of both the first and second exterior coverings may be such so as to permit the including of longitudinal passageways through the coverings. Within each passageway there is to be located a thin wire member which is capable of being manually moved within the passageway. The forward end of the thin wire member is to be specially configured such as in the shape of a hook.
Inventors
- 👤 C. Eric Olsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:25
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/42; A61B90/00; A61B90/08; A61B2090/0814
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
A surgical stylet comprising: an elongated member formed of a core and a first exterior covering, said core being of a solid metal but bendable into a variety of different configurations, said core having a longitudinal center axis, said first exterior covering comprising a rigid plastic; said elongated member having a fore end and an aft end, said core extending into said fore end, said core having a tip, said tip being smoothly contoured, a second exterior covering extending beyond said tip, said second exterior covering being formed of a resilient cushiony plastic so as to deter the making of puncture wounds in tissue during use of the stylet; and said first exterior covering being extruded upon said core, said core being of uniform cross-sectional configuration, said exterior covering being of uniform cross-sectional configuration.
Claim 2
Dependent Claim
134 words
A surgical stylet comprising: an elongated member formed of a core and a first exterior covering, said core being of a solid metal but bendable into a variety of different configurations, said core having a longitudinal center axis, said first exterior covering comprising a rigid plastic; said elongated member having a fore end and an aft end, said core extending into said fore end, said core having a tip, said tip being smoothly contoured, a second exterior covering extending beyond said tip, said second exterior covering being formed of a resilient cushiony plastic so as to deter the making of puncture wounds in tissue during use of the stylet; and said first exterior covering being extruded upon said core, said core being of uniform cross-sectional configuration, said exterior covering being of uniform cross-sectional configuration.
Claim 3
Dependent Claim
23 words
The surgical stylet as defined in claim 1 wherein: said second exterior covering having a cross-sectional configuration identical to said first exterior covering.
Claim 4
Dependent Claim
41 words
The surgical stylet as defined in claim 2 wherein: said fore end including a widened section, whereby said widened section is to function to securely retain said second exterior coating and prevent accidental dislodgement of such during use of the stylet.
Claim 5
Dependent Claim
105 words
The surgical stylet as defined in claim 3 wherein: a longitudinal passageway formed through the entire length of said first exterior covering and said second exterior covering, said passageway being located substantially parallel to said longitudinal center axis of said core, a rigid wire member being located within said passageway, said rigid wire member extending exteriorly of said passageway, said rigid wire member being manually movable within said passageway, whereby a portion of said wire member is to extend exteriorly of said second exterior covering and is to be capable of performing a function such as latching onto a piece of tissue or the like.
Claim 6
Dependent Claim
217 words
A surgical stylet comprising: an elongated member formed of a core and a first exterior covering, said first exterior covering closely conforming to the exterior surface of said core, said core being of a solid metal but bendable into a variety of different configurations, said core having a longitudinal center axis, said first exterior covering comprising a rigid material; said elongated member having a fore end and an aft end, said core extending into said fore end, said core having a tip, said tip being smoothly contoured, a second exterior covering extending beyond said tip, said second exterior covering being formed of a resilient cushiony material so as to deter the making of puncture wounds in tissue during use of the stylet; and a longitudinal passageway formed through said entire length of said first exterior covering and said second exterior covering, said passageway being located substantially parallel to and spaced from said longitudinal center axis of said core, a rigid wire member being located within said passageway, said rigid wire member extending exteriorly of said passageway, said rigid wire member being manually movable within said passageway, a portion of said wire member extends exteriorly of said second exterior covering and is capable of performing a function such as latching onto a piece of tissue or the like.
Claim 7
Dependent Claim
217 words
A surgical stylet comprising: an elongated member formed of a core and a first exterior covering, said first exterior covering closely conforming to the exterior surface of said core, said core being of a solid metal but bendable into a variety of different configurations, said core having a longitudinal center axis, said first exterior covering comprising a rigid material; said elongated member having a fore end and an aft end, said core extending into said fore end, said core having a tip, said tip being smoothly contoured, a second exterior covering extending beyond said tip, said second exterior covering being formed of a resilient cushiony material so as to deter the making of puncture wounds in tissue during use of the stylet; and a longitudinal passageway formed through said entire length of said first exterior covering and said second exterior covering, said passageway being located substantially parallel to and spaced from said longitudinal center axis of said core, a rigid wire member being located within said passageway, said rigid wire member extending exteriorly of said passageway, said rigid wire member being manually movable within said passageway, a portion of said wire member extends exteriorly of said second exterior covering and is capable of performing a function such as latching onto a piece of tissue or the like.
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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) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |