Patent US4057056A successfully refreshed from Google Patents.
US4057056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Walking cast
Assignee: Individual
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Filing: 1976-06-01
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Granted: 1977-11-08
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Expires: 1996-06-01
Abstract
Abstract A premolded walking cast available in a group of sizes, impervious to moisture, and adaptable to variability in swelling for use with fractures or sprains of the lower leg which is lightweight, easy and quick to apply and remove, which eliminates or reduces the need for crutches and which incorporates a removable walker portion.
Inventors
- 👤 Hugh W. Payton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:53
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/04; A61F5/05; A61F5/058; A61F5/05841; A61F5/0585; A61F13/00; A61F13/04; A61F13/041; A61F13/043
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
207 words
A walking cast for removable attachment to the lower leg of a patient for immobilization thereof comprising, a posterior shell of rigid non-bendable material having a contoured shape to receive approximately the posterior third of the calf of the lower leg, the ankle posterior to both malleoli and the ventrum of the entire foot, said shell extending from the upper calf, distally to beneath the lower part of the ankle and the foot, said shell having a shape for rigidly supporting the foot in a predetermined neutral position at substantially right angles to the calf and in proper crosswise relation, the sides of said shell being manually bendable about the calf to conform to the size and body shape of the individual patient, pliable side members attached to the sides of said shell and overlying the lateral portions of the leg, ankle and foot with the adjacent edges of said side members being spaced leaving a gap therebetween, said side members being pliable to conform to the contours of the leg, ankle and the foot of the patient, and flexible means for closing said gap and confining and securing the calf and foot of the patient in immobilized position embraced within said shell and said side members.
Claim 2
Dependent Claim
207 words
A walking cast for removable attachment to the lower leg of a patient for immobilization thereof comprising, a posterior shell of rigid non-bendable material having a contoured shape to receive approximately the posterior third of the calf of the lower leg, the ankle posterior to both malleoli and the ventrum of the entire foot, said shell extending from the upper calf, distally to beneath the lower part of the ankle and the foot, said shell having a shape for rigidly supporting the foot in a predetermined neutral position at substantially right angles to the calf and in proper crosswise relation, the sides of said shell being manually bendable about the calf to conform to the size and body shape of the individual patient, pliable side members attached to the sides of said shell and overlying the lateral portions of the leg, ankle and foot with the adjacent edges of said side members being spaced leaving a gap therebetween, said side members being pliable to conform to the contours of the leg, ankle and the foot of the patient, and flexible means for closing said gap and confining and securing the calf and foot of the patient in immobilized position embraced within said shell and said side members.
Claim 3
Dependent Claim
25 words
A walking cast as defined in claim 1 which the side members overlying the ankle in the zone of the malleoli are of elastic fabric.
Claim 4
Dependent Claim
24 words
A walking cast as defined in claim 1 including a fabric tongue covering said gap and overlapping the adjacent edges of said side members.
Claim 5
Dependent Claim
51 words
A walking cast as defined in claim 3 including pairs of straps in spaced positions on said tongue and extending over said side members to the posterior portion of said shell to provide for encasing the calf and foot of the patient immobilizing the same in predetermined position in said shell.
Claim 6
Dependent Claim
29 words
A walking cast as defined in claim 1 including a walker member removably fastenable to said shell and having a broad support area on which the patient may walk.
Claim 7
Dependent Claim
29 words
A walking cast as defined in claim 1 in which there is a stiffening member in the posterior area of said shell extending over the leg embracing portion thereof.
Claim 8
Dependent Claim
28 words
A walking cast as defined in claim 1 in which the side member portions adjacent the malleoli are formed of fabric material capable of stretching in all directions.
Claim 9
Dependent Claim
39 words
A walking cast as defined in claim 1 in which the inner surface of said shell throughout the extent thereof from the calf portion, the ankle portion and the foot portion is lined with a soft foam rubber-like material.
Claim 10
Dependent Claim
22 words
A walking cast as defined in claim 1 in which the shell and the side members are an integral molded unitary element.
Claim 11
Dependent Claim
18 words
The cast of claim 1 in which said shell is molded of water impervious non-allergenic synthetic plastic material.
Claim 12
Dependent Claim
25 words
The cast of claim 1 in which said shell is formed with a greater thickness at said spine and said bottom than at said sides.
Claim 13
Dependent Claim
45 words
A walking cast as defined in claim 5 in which said walker member has a rocking chair shaped ground engaging base, and means for removably attaching said walker member to the bottom of said cast providing for ready separation and removal thereof from said cast.
Claim 14
Dependent Claim
35 words
A walking cast as defined in claim 12 in which said walker member is quickly detachable from the cast in response to pivoting motion thereof about an axis adjacent the toe of said molded shell.
Claim 15
Dependent Claim
22 words
The cast of claim 12 further comprising means on the outer bottom surface of said shell bottom releasably supporting a ground-engaging walker.
Claim 16
Dependent Claim
31 words
A walking cast as defined in claim 4 in which each of said straps is adapted to be held under pressure in locked position by means of fabric self-gripping interlocking fasteners.
Claim 17
Dependent Claim
35 words
A walking cast as defined in claim 4 in which the pairs of straps on said tongue are located in the calf area and in the foot area leaving the malleoli free of strap supports.
Claim 18
Dependent Claim
14 words
The cast of claim 15 in which said fastening means comprises self-gripping fabric material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |