US3782390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pedicure prosthesis for the metatarsal arch of the foot
Assignee: Individual
•
Filing: 1971-07-23
•
Granted: 1974-01-01
•
Expires: 1991-07-23
Abstract
Abstract A support for the metatarsal arch of the foot is formed by injection of a self-curing non-foamable fluid material into the arch support enclosure. This fluid material automatically cures into a rigid support or prosthesis for the arch of the foot. This polymerizable material is normally contained in either a insert under the foot or by a balloon like material, in either case the polymerizable material is pumped or injected into the resulting enclosure. The same method can be used to form in situ prosthesis casts for any part of the body, i.e., to form splints, braces, etc., contured directly to the portion of the human body for which it is designed to lend support. The self-curing material is preferably a cross-linkable prepolymerized material which includes an initiator, and the self-curing is achieved by the application of mild temperatures, e.g., 120* F.
Inventors
- 👤 A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:54
CPC Classifications
A; A43; A43B; A43B1/00; A43B1/0027; A43B1/0036; A43B7/00; A43B7/14; A43B7/28; A61; A61F; A61F13/00; A61F13/04; A61L; A61L15/00; A61L15/07; Y; Y10; Y10S; Y10S264/00; Y10S264/30
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
121 words
The process for preparing a prosthesis for supporting or restraining a part of the body which comprises: (a) placing a fluid, self-curing, non-foamable material in said prosthesis enclosure, said fluid self-curable material being comprised of an admixture of a cross-linkable prepolymerized material, which is a poly(ester of methacrylate), and an ethylenically unsaturated monomer, which is an ester of methacrylate, and (b) permitting said fluid self-curing material to cure in situ at a temperature between 59* and 120* F. to form a rigid cured material which conforms to the shape of the affected portion of the body and which has essentially the same volume in the pre-cured state as in the cured state, there being no gas given off during the curing.
Claim 2
Dependent Claim
121 words
The process for preparing a prosthesis for supporting or restraining a part of the body which comprises: (a) placing a fluid, self-curing, non-foamable material in said prosthesis enclosure, said fluid self-curable material being comprised of an admixture of a cross-linkable prepolymerized material, which is a poly(ester of methacrylate), and an ethylenically unsaturated monomer, which is an ester of methacrylate, and (b) permitting said fluid self-curing material to cure in situ at a temperature between 59* and 120* F. to form a rigid cured material which conforms to the shape of the affected portion of the body and which has essentially the same volume in the pre-cured state as in the cured state, there being no gas given off during the curing.
Claim 3
Dependent Claim
50 words
The process of claim 1 wherein said prosthesis enclosure is first placed in a shoe, wherein said affected part of the body is the metatarsal arch of a foot, and wherein said prosthesis enclosure is placed on the affected portion of said body by placing said foot in said shoe.
Claim 4
Dependent Claim
31 words
The process of claim 2 wherein pressure is placed on said fluid self-curing material before it completely cures so that said fluid self-curing material takes the shape of said metatarsal arch.
Claim 5
Dependent Claim
21 words
The process of claim 2 wherein said fluid self-curing material is comprised of poly(methyl methacrylate), monomeric methyl methacrylate and acetyl peroxide.
Claim 6
Dependent Claim
87 words
The process of claim 2 wherein said prosthesis enclosure is a sealed envelope, with at least its top surface being elastic, wherein said fluid self-curing material is placed in said prosthesis enclosure by piercing a side of said prosthesis enclosure with an elongated, hollow tube device and force injecting said fluid self-curing material through said elongated, hollow tube device into said prosthesis encLosure, and wherein said hollow tube device is removed from said fluid self-curing prosthesis enclosure and said side of said prosthesis enclosure is rapidaly sealed.
Claim 7
Dependent Claim
25 words
The process of claim 5 wherein said region of said side of said prosthesis enclosure which is pierced by said hollow tube device is self-curing.
Claim 8
Dependent Claim
130 words
The process of claim 3 wherein said prosthesis enclosure is a rigid insert that is placed on or affixed to the insole of said shoe, said insert comprising a flat plate that extends across the width of said insole and extends lengthwise at least across the metatarsal arch of said foot, and a low side wall on the side away from said metatarsal arch which completely covers said arch when said foot is inserted in said shoe, said foot serving as the top of said prosthesis enclosure, wherein said fluid self-curing material is placed in said prosthesis enclosure by means of a tube inserted between said high side wall and said foot, and wherein said tube is rapidly removed after said fluid self-curing material is placed in said prosthesis enclosure.
Claim 9
Dependent Claim
25 words
The process of claim 2 wherein a cast is placed over said prosthesis enclosure before said fluid self-curing material is placed in said prosthesis enclosure.
Claim 10
Dependent Claim
93 words
The prosthesis for supporting or restraining a part of the body which comprises a prosthesis enclosure and a rigid, cured non-foamed material, within the prosthesis enclosure, which conforms to the desired shape and which has essentially the same volume in the cured state as it had in the pre-cured state, said rigid, cured, non-foamed material comprising a prepolymerized material, which is a poly(ester of methacrylate), cross-linked by an ethylenically unsaturated monomer, which is an ester of methacrylate, said rigid, cured non-foamed material having been cured at a temperature between 59* and 120* F.
Claim 11
Dependent Claim
93 words
The prosthesis for supporting or restraining a part of the body which comprises a prosthesis enclosure and a rigid, cured non-foamed material, within the prosthesis enclosure, which conforms to the desired shape and which has essentially the same volume in the cured state as it had in the pre-cured state, said rigid, cured, non-foamed material comprising a prepolymerized material, which is a poly(ester of methacrylate), cross-linked by an ethylenically unsaturated monomer, which is an ester of methacrylate, said rigid, cured non-foamed material having been cured at a temperature between 59* and 120* F.
Claim 12
Dependent Claim
21 words
The prosthesis of claim 9 wherein said prosthesis enclosure is located between said affected part of the body and a cast.
Claim 13
Dependent Claim
26 words
The prosthesis of claim 10 wherein said prosthesis enclosure is located on the insole of a shoe where the metatarsal arch of a foot is located.
Claim 14
Dependent Claim
13 words
The prosthesis of claim 11 wherein said prosthesis enclosure is a sealed enclosure.
Claim 15
Dependent Claim
88 words
The prosthesis of claim 12 wherein said prosthesis enclosure is a rigid insert that is placed on or affixed to said insole of said shoe, said insert comprising a flat plate that extends lengthwise across the width of said insole and extends lengthwise at least across the metatarsol arch of said foot, and a low side wall on the side away from said metatarsal arch which completely covers said arch when said foot is inserted in said shoe, said foot serving as the top of said prosthesis enclosure.
Claim 16
Dependent Claim
13 words
The prosthesis of claim 13 wherein said prosthesis enclosure is comprised of aluminum.
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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) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |