Patent US3779239A successfully refreshed from Google Patents.
US3779239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connector for fractured bones
Assignee: Individual
•
Filing: 1972-03-13
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Granted: 1973-12-18
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Expires: 1992-03-13
Abstract
Abstract An elongated sleeve is insertable into a passage provided in a fractured bone, so as to bridge the fracture thereof. The front end of the sleeve carries an expansion anchor sleeve which is longitudinally slotted so that its circumferential wall is composed of strips which are connected only at the leading and trailing ends. The strips are buckled in radially outward direction by inserting a rod through the sleeve and connecting it with the leading end of the expansion anchor sleeve so as to exert a rearwardly directed tensile force upon the same, causing its buckling.
Inventors
- 👤 J Muller
- 👤 A Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:50
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/72; A61B17/7216; A61B17/7225; A61B17/7233; A61B17/7258
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
227 words
A surgical appliance, particularly a connector for fractured bones, comprising an elongated sleeve adapted for insertion into a passage in a fractured bone so as to bridge the fracture thereof, said elongated sleeve having a front end and a rear end; an expansion sleeve at said front end and having a trailing end, a leading end, and a peripheral wall including a plurality of elongated strip-shaped portions extending between and connected with one another at said leading and trailing ends, respectively; a cap sleeve at said rear end accommodated within said elongated sleeve, said cap sleeve being provided with internal screw threads; expander means extending through said elongated sleeve from the region of said rear end to said leading end and having external screw threads which mesh with said internal screw threads, said expander means being connected with said expansion sleeve so that rotation of said cap sleeve in a predetermined sense effects radially outward buckling of said strip-shaped portions; and screw means at said rear end mating with said internal screw threads and having a head portion located exteriorly of said passage which is adapted to abut said bone so that rotation of said screw means in a predetermined sense subsequent to outward buckling of said strip-shaped portions enables a compressive force to be exerted on said bone in a sense drawing the bone fragments together.
Claim 2
Dependent Claim
227 words
A surgical appliance, particularly a connector for fractured bones, comprising an elongated sleeve adapted for insertion into a passage in a fractured bone so as to bridge the fracture thereof, said elongated sleeve having a front end and a rear end; an expansion sleeve at said front end and having a trailing end, a leading end, and a peripheral wall including a plurality of elongated strip-shaped portions extending between and connected with one another at said leading and trailing ends, respectively; a cap sleeve at said rear end accommodated within said elongated sleeve, said cap sleeve being provided with internal screw threads; expander means extending through said elongated sleeve from the region of said rear end to said leading end and having external screw threads which mesh with said internal screw threads, said expander means being connected with said expansion sleeve so that rotation of said cap sleeve in a predetermined sense effects radially outward buckling of said strip-shaped portions; and screw means at said rear end mating with said internal screw threads and having a head portion located exteriorly of said passage which is adapted to abut said bone so that rotation of said screw means in a predetermined sense subsequent to outward buckling of said strip-shaped portions enables a compressive force to be exerted on said bone in a sense drawing the bone fragments together.
Claim 3
Dependent Claim
39 words
A surgical appliance as defined in claim 1, wherein said leading end is provided with internal screw threads, said expander means being a rod having external screw threads which mesh with said internal screw threads at said leading end.
Claim 4
Dependent Claim
33 words
A surgical appliance as defined in claim 1, at least some of said strip-shaped portions having a reduced cross-section intermediate said leading and trailing ends at loci where buckling is desired to occur.
Claim 5
Dependent Claim
33 words
A surgical appliance as defined in claim 1, at least some of said strip-shaped portions having a hinged section intermediate said leading and trailing ends at loci where buckling is desired to occur.
Claim 6
Dependent Claim
26 words
A surgical appliance as defined in claim 1, at least some of said strip-shaped portions being slightly creased at loci where buckling is desired to occur.
Claim 7
Dependent Claim
47 words
A surgical appliance as defined in claim 1; furthEr comprising buckling-promoting means on said strip-shaped portions at loci where buckling is desired to occur and which are spaced from said trailing end by a distance corresponding to about one third of the distance to said leading end.
Claim 8
Dependent Claim
26 words
A surgical appliance as defined in claim 6, said strip-shaped portions being connected at said trailing end directly with said front end of said elongated sleeve.
References Cited (Backward Citations)
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US2236079A
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US2559281A
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US2699774A
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US3143915A
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |