Patent US5116381A successfully refreshed from Google Patents.
US5116381A
Expired / Lapsed
US
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Prosthesis with a monobloc framework for leg amputation and method for producing this prosthesis
Assignee: Proteor SAS
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Filing: 1991-04-23
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Granted: 1992-05-26
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Expires: 2011-04-23
Abstract
Abstract The invention relates to a prosthesis for a leg amputee, comprising a thermoformed framework made of a thermoplastic material or of a laminated substance, covered with a coating material and comprising a socket (1), a leg part (2) and a prosthetic foot (3), one adjoining the other. According to the invention, the framework of the leg part (2) and the prosthetic foot (3) constitutes a monobloc assembly, produced in a single casting operation, and in that the prosthetic foot comprises, at the level of the sole, a cut having served for the extraction of the molding core and, at the level of the heel, above the sole, a cut (9) of wedge formation lending itself to a flexion of the rear of the sole relative to the leg part.
Inventors
- 👤 Palfray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:23
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/50; A61F2/60; A61F2/5044; A61F2/78; A61F2/80; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30065; A61F2002/30316; A61F2002/30329; A61F2002/30451; A61F2002/5055; A61F2/66; A61F2002/6614; A61F2002/6657; A61F2210/00; A61F2210/0071; A61F2220/00; A61F2220/0025; A61F2220/0058; Y; Y10; Y10S; Y10S623/00; Y10S623/901
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
125 words
A prosthesis for a leg amputee, comprising a cast framework, covered with a coating material and comprising a socket (1), a leg part (2) and a prosthetic foot (3), one adjoining the other, characterized in that the framework of the leg part (2) and of the prosthetic foot (3) constitutes a monobloc assembly, produced in a single casting operation, and in that the prosthetic foot includes, at the level of a sole of the prosthetic foot, a cut having served for the extraction of a molding core and, at the level of a heel of the prosthetic foot at a rear portion thereof, above the sole, a cut of wedge formation allowing a flexion of the rear of the sole relative to the leg part.
Claim 2
Dependent Claim
125 words
A prosthesis for a leg amputee, comprising a cast framework, covered with a coating material and comprising a socket (1), a leg part (2) and a prosthetic foot (3), one adjoining the other, characterized in that the framework of the leg part (2) and of the prosthetic foot (3) constitutes a monobloc assembly, produced in a single casting operation, and in that the prosthetic foot includes, at the level of a sole of the prosthetic foot, a cut having served for the extraction of a molding core and, at the level of a heel of the prosthetic foot at a rear portion thereof, above the sole, a cut of wedge formation allowing a flexion of the rear of the sole relative to the leg part.
Claim 3
Dependent Claim
35 words
A prosthesis according to claim 1, characterized in that the socket (1) is also cast in one piece with the leg part (2) and the prosthetic foot (3) and constitutes with these a monobloc assembly.
Claim 4
Dependent Claim
30 words
A prosthesis according to one of claims 1 or 2, characterized in that there is incorporated in the prosthetic foot (3) a sole (8) made of an elastically deformable material.
Claim 5
Dependent Claim
58 words
A prosthesis according to claim 3, characterized in that, in the prosthetic foot (3), above the sole (8) made of an elastically deformable material, there is incorporated a metallic spring blade (16), bulged in its center part and bearing at its ends against a front end and a rear end of the sole of the prosthetic foot (3).
Claim 6
Dependent Claim
18 words
A prosthesis according to claim 1, characterized in that the leg part (2) includes two lateral ribs (5).
Claim 7
Dependent Claim
31 words
A prosthesis according to claim 1, characterized in that the leg part comprises a rear rib (6), formed by a weld resulting from the casting of the framework of the prosthesis.
Claim 8
Dependent Claim
55 words
A prosthesis according to claim 1, characterized in that, between the socket and the leg part (2), there are provided, at a rear and at a front, reinforcement ribs (15), in each of which there is embedded a metal wire (12) stretched obliquely between a base of the socket (1) and the leg part (2).
Claim 9
Dependent Claim
59 words
A prosthesis according to claim 1, characterized in that the socket (1) comprises at a lower section thereof, a part (21) of U-shaped cross-section capable of fitting over a projecting part (20) of complementary profile formed at an upper section of the leg part (2), and fixable on the latter with screws and nuts in a plurality of positions.
Claim 10
Dependent Claim
21 words
A prosthesis for a leg amputee as claimed in claim 1 wherein the cast framework is thermoformed from a thermoplastic material.
Claim 11
Dependent Claim
19 words
A prosthesis for a leg amputee as claimed in claim 1 wherein the cast framework is a laminated substance.
Claim 12
Dependent Claim
91 words
A method for producing a prosthesis for a leg amputee according to claim 1 comprising the steps of: (a) casting a material into a monobloc framework of a leg part and a prosthetic foot around a suitable core; and then (b) cutting the prosthetic foot to extract the core; and then (c) forming a cut, at the level of a heel portion of the prosthetic foot and above a sole portion thereof, having a wedge formation allowing for a flexion of a rear of the sole relative to the leg part.
Claim 13
Dependent Claim
73 words
A method according to claim 11, characterized in that, prior to the casting, there is fixed under the core (10), used for the casting, a reinforcement sole (8) of an elastically deformable material, in such a way that it is made integral with the monobloc framework during the casting operation, and in that, after this operation, the core (10) is extracted through an opening made in this sole and in the monobloc framework.
Claim 14
Dependent Claim
47 words
A method according to claim 12, characterized in that, after the extraction of the core, a spring blade of metal or of another elastically deformable material braced and curved between a front end and a rear end of the prosthetic foot is inserted into the prosthetic foot.
Claim 15
Dependent Claim
95 words
A method according to claim 11, in which the socket (1) of the prosthesis is cast at the same time as the monobloc framework of the leg part (2) and of the prosthetic foot (3) of the prosthesis, characterized in that, prior to the casting operation, a head of the core (10) used for the casting is embedded in a plaster cast (11) of a stump of an amputee, in that, after the casting operation, the plaster cast (11) is removed and in that the socket (1) thus cast is cut to the desired shapes.
Claim 16
Dependent Claim
25 words
A method for producing a prosthesis for a leg amputee according to claim 11 wherein the casting step is carried out using a thermoplastic material.
Claim 17
Dependent Claim
25 words
A method for producing a prosthesis for a leg amputee according to claim 11 wherein the casting step is carried out using a laminated substance.
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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) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |