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US3703894A Expired / Lapsed US ⏱️ 0.0 years remaining

Rigid foam polyurethane hand splint

Assignee: United States Department of the Navy
•
Filing: 1971-02-16
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Granted: 1972-11-28
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Expires: 1991-02-16
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Abstract

Abstract A light foam polyurethane hand burn splint designed as a single unit consisting of a broad, concave arm-piece, a thicker-butnarrower wrist section, and a pistol grip hand portion to support the hand in a position to prevent scar contractures from causing postburn deformities.

Inventors

  • 👤 Dwight V Galloway
  • 👤 Gordon E King
  • 👤 Charles C Asbelle
  • 👤 Michael F Arrigo

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 07:52
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/04; A61F5/05; A61F5/058; A61F5/05841; A61F5/05858; A61F5/05866

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 166 words
A polyurethane hand burn splint to support the hand in a position to prevent scar contractures between the individual fingers of said hand said splint comprising in combination: a. a rigid pistol grip shaped hand positioning means; b. a rigid concave paddle-shaped forearm retaining section; c. a flexible wrist supporting means joining said shaped hand positioning means to said forearm retaining section wherein said wrist supporting means is thicker but narrower than said forearm retaining section and narrower than said hand positioning means; d. said hand positioning means comprises a first, second, third and fourth semicircular individual concaved gutter splints with flared separation ridges and a semicircular thickly flared cylindrical section adjacent to and forming said first gutter splint for separating the thumb and index fingers of said hand; and e. said fourth gutter splint being further constructed substantially at a right angle to the longitudinal axis of the hand splint so that the middle joint of the little finger is positioned at about 20* flexion.
Claim 2
Dependent Claim 166 words
A polyurethane hand burn splint to support the hand in a position to prevent scar contractures between the individual fingers of said hand said splint comprising in combination: a. a rigid pistol grip shaped hand positioning means; b. a rigid concave paddle-shaped forearm retaining section; c. a flexible wrist supporting means joining said shaped hand positioning means to said forearm retaining section wherein said wrist supporting means is thicker but narrower than said forearm retaining section and narrower than said hand positioning means; d. said hand positioning means comprises a first, second, third and fourth semicircular individual concaved gutter splints with flared separation ridges and a semicircular thickly flared cylindrical section adjacent to and forming said first gutter splint for separating the thumb and index fingers of said hand; and e. said fourth gutter splint being further constructed substantially at a right angle to the longitudinal axis of the hand splint so that the middle joint of the little finger is positioned at about 20* flexion.
Claim 3
Dependent Claim 52 words
The hand burn splint recited in claim 1 wherein said first, second and third concave gutters are constructed in such a manner so that when the prehensile hand grasps the splint, the fingers fit into the ridged gutters while said hand assumes the natural position of rest on said hand positioning means.
Claim 4
Dependent Claim 22 words
The device recited in claim 1 further including deformable inserts are molded into said forearm retaining means and said wrist supporting means.
Claim 5
Dependent Claim 37 words
The device recited in claim 3 wherein said deformable inserts extend through said forearm retaining means and into said wrist supporting means and is flexible at said wrist supporting means whereby said wrist supporting means is adjustable.
Claim 6
Dependent Claim 36 words
The device recited in claim 1 wherein said forearm retaining means supports and retains the forearm in a semirigid position and furthEr including a forearm wrapping means for swathing said forearm and said forearm retaining means.

References Cited (Backward Citations)

CA629745A Cited
US1177398A Cited
US1328598A Cited
US2318864A Cited
GB574529A Cited
US2794638A Cited
US2889827A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-11-28 1976-05-29 1976-11-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-11-28 1980-05-29 1980-11-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-11-28 1984-05-29 1984-11-28 $7700.00 Window Closed / Lapsed

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