US4976714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal intramedullary nail, particularly for the thighbone
Assignee: A RESPONSABILITE DITE MICHAEL'S FRANCE 55 AVENUE SAINTE-FOY - 92200 NEUILLY (FRANCE) Ltee Ste
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Filing: 1989-07-05
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Granted: 1990-12-11
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Expires: 2009-07-05
Abstract
Abstract The invention relates to a universal intramedullary nail, particularly for the thighbone. The intramedullary nail according to the invention is characterized by the fact that it is made of at least one profile of constant section and resiliently deformable in the transverse direction, said section being, when at rest, substantially inscribed within a circumference and having the general shape of a U occupying more than one-half of said circumference, and end of said section ending into a circular enlargement while the other end of said section is ending into a key-shaped enlargement the cavity of which is limited by an arc of a circle complementary to said circular enlargement. Application to surgery.
Inventors
- 👤 Michael Aghion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:14
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/72; A61B17/7283; A61B17/88; A61B17/8863
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
81 words
A universal intramedullary nail, particular for the thigh-bone, comprising a profile of constant section and resiliently deformable in the transverse direction, said section being, when at rest, sustantially inscribed within a circumference of a circle and having the general shape of a U occupying more than one half of said circumference, an end of said section ending in a circular enlargement while the other end of said section ends in an enlargement having a circular cavity complementary to said circular enlargement.
Claim 2
Dependent Claim
81 words
A universal intramedullary nail, particular for the thigh-bone, comprising a profile of constant section and resiliently deformable in the transverse direction, said section being, when at rest, sustantially inscribed within a circumference of a circle and having the general shape of a U occupying more than one half of said circumference, an end of said section ending in a circular enlargement while the other end of said section ends in an enlargement having a circular cavity complementary to said circular enlargement.
Claim 3
Dependent Claim
29 words
An intramedullary nail according to claim 1, characterized by the fact that at least one of the edges of said cavity of the key-shaped end has a sharp edge.
Claim 4
Dependent Claim
13 words
An intramedullary nail according to claim 1, wherein said profile bears length marks.
Claim 5
Dependent Claim
15 words
An intramedullary nail according to claim 1, wherein said profile is formed with equidistant holes.
Claim 6
Dependent Claim
12 words
An intramedullary nail according to claim 1, wherein said profile is metallic.
Claim 7
Dependent Claim
14 words
An intramedullary nail according to claim 5, wherein said metallic profile is an extrusion.
Claim 8
Dependent Claim
24 words
An intramedullary nail according to claim 1, wherein said profile is a synthetic material reinforced with longitudinal fibers having a high modulus of elasticity.
Claim 9
Dependent Claim
18 words
An intramedullary nail according to claim 7, wherein said profile of a reinforced synthetic material is an extrusion.
Claim 10
Dependent Claim
22 words
An intramedullary nail according to claim 1, wherein both ends of said profile are formed with a chamfer forming an elongated cone.
Claim 11
Dependent Claim
18 words
An intramedullary nail according to claim 1, wherein said profile is made of a material opaque to X-rays.
Claim 12
Dependent Claim
15 words
An intramedullary nail according to claim 1, which includes at least two profiles placed concentrically.
Claim 13
Dependent Claim
34 words
An intramedullary nail according to claim 1, which includes at least two profiles, the enlargement of circular section of one profile being accommodated within the cavity of the key-shaped enlargement of an adjacent profile.
References Cited (Backward Citations)
US2265208A
Cited
DE767879C
Cited
FR893401A
Cited
DE913228C
Cited
DE824239C
Cited
FR1031128A
Cited
US3893196A
Cited
US4682590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-10 | 1994-06-11 | 1994-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-10 | 1998-06-11 | 1998-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-10 | 2002-06-11 | 2002-12-11 | $7700.00 | Window Closed / Lapsed |