US4829992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soft playing orthopedic splint
Assignee: Individual
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Filing: 1987-10-01
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Granted: 1989-05-16
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Expires: 2007-10-01
Abstract
Abstract Soft orthopedic splint comprising an inner layer of RTV silicone rubber impregnated gauze and an outer layer of silicone rubber impregnated gauze with a soft foam pad interposed between. The soft pad has spaced edges which define a seam area to be filled by the rubbery compound. The pad is also provided with openings into which the rubber exudes before vulcanizing so that the intermediate pad is locked or keyed in place without using cement. The splint is split along the seam so that the split edges are entirely rubber surfaces covering the pad. The ends of the pad are also covered by rubber.
Inventors
- 👤 David R. Cilladi
- 👤 Jeffrey C. Sunderlin
- 👤 Steven R. Tippett
- 👤 Patrick B. Karns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:20
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/04; A61F5/05; A61F5/058; A61F5/05841; A61F5/05858; A61F13/00; A61F13/10; A61F13/107; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31652; Y10T428/31667
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
250 words
In an orthopedic soft playing sleevelike, cylindrical splint to protect an injury, developed by first making a hollow cast of the anatomy to be protected and then using the cast as a mold for a castable material which hardens to replicate the anatomy, the improvement comprising an inner layer of gauze impregnated with an inner layer of a room temperature vulcanizable silicone rubber the inner surface of impregnated gauze replicating the outer surface of the anatomy, an intermediate sleeve of foam plastic applied concentrically to and partly immersed in the vulcanizable silicone rubber at the outer surface of said inner layer, said sleeve having spaced parallel edges defining a separation channel and also having large openings manually cut therein into which some of the silicone rubber of the inner layer is exuded to key the sleeve to the inner layer without the need for cement, and an outer layer of gauze wrapped about said sleeve and impregnated with an outer layer of room temperture vulcanizable silicone rubber with some of the silicone rubber of the outer layer exuded into said openings to key the sleeve to the outer layer without the need for cement, said separation channel being filled with silicone rubber, and the splint being slit along the length of the filled separation channel substantially medially thereof so the splint when spread and slipped over the anatomy to be protected exhibits separate channel edges of silicone rubber which protect the channel edges against gauze fraying and foam plastic deterioration.
Claim 2
Dependent Claim
250 words
In an orthopedic soft playing sleevelike, cylindrical splint to protect an injury, developed by first making a hollow cast of the anatomy to be protected and then using the cast as a mold for a castable material which hardens to replicate the anatomy, the improvement comprising an inner layer of gauze impregnated with an inner layer of a room temperature vulcanizable silicone rubber the inner surface of impregnated gauze replicating the outer surface of the anatomy, an intermediate sleeve of foam plastic applied concentrically to and partly immersed in the vulcanizable silicone rubber at the outer surface of said inner layer, said sleeve having spaced parallel edges defining a separation channel and also having large openings manually cut therein into which some of the silicone rubber of the inner layer is exuded to key the sleeve to the inner layer without the need for cement, and an outer layer of gauze wrapped about said sleeve and impregnated with an outer layer of room temperture vulcanizable silicone rubber with some of the silicone rubber of the outer layer exuded into said openings to key the sleeve to the outer layer without the need for cement, said separation channel being filled with silicone rubber, and the splint being slit along the length of the filled separation channel substantially medially thereof so the splint when spread and slipped over the anatomy to be protected exhibits separate channel edges of silicone rubber which protect the channel edges against gauze fraying and foam plastic deterioration.
Claim 3
Dependent Claim
23 words
The splint of claim 1 in which the outer layer of silicone is extended to cover longitudinal ends of the intermediate foam sleeve.
Claim 4
Dependent Claim
14 words
The splint of claim 1 in which the channel is lateral to the injury.
Claim 5
Dependent Claim
14 words
The splint of claim 2 in which the channel is lateral to the injury.
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) | 1992-05-15 | 1992-11-14 | 1993-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-15 | 1996-11-14 | 1997-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-15 | 2000-11-14 | 2001-05-16 | $7700.00 | Window Closed / Lapsed |