Patent US4790301A successfully refreshed from Google Patents.
US4790301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for and method of dynamic splinting
Assignee: Individual
•
Filing: 1987-10-23
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Granted: 1988-12-13
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Expires: 2007-10-23
Abstract
Abstract A system of dynamic hand splinting employing a splinting device which comprises a line attached between a finger to be treated and a rotatable spool acted upon by a watch spring which via the spool and line transmits to the finger a force appropriate for assisting straightening or bending movements of the finger.
Inventors
- 👤 Krister Silfverskiold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:35
CPC Classifications
A; A61; A61F; A61F5/00; A61F5/01; A61F5/0102; A61F5/0104; A61F5/0118
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
201 words
A dynamic splinting device, comprising: a first device part for attachment to one part of a limb of a patient; a second device part for attachment to a second part of the limb of the patient, said second part of the limb of the patient being a different part than the part of the limb of the patient to which said first device part is attached to, the second limb part of the patient being jointed to the first limb part of the patient; and, a spring mechanism serving as a means for providing a force for the dynamic splinting and movement of a digit of the patient, said spring mechanism being the sole means for interconnecting said first device part and said second device part, said spring mechanism comprising: a rotatable spool; a line which is windable on to and off of the spool and has a portion leading away from the spool which is attached to said second device part; a support carrying said spool and attached to said first device part; and at least one spring acting with torsion on the spool to urge said spool in the rotational sense in which the line is wound up thereon.
Claim 2
Dependent Claim
201 words
A dynamic splinting device, comprising: a first device part for attachment to one part of a limb of a patient; a second device part for attachment to a second part of the limb of the patient, said second part of the limb of the patient being a different part than the part of the limb of the patient to which said first device part is attached to, the second limb part of the patient being jointed to the first limb part of the patient; and, a spring mechanism serving as a means for providing a force for the dynamic splinting and movement of a digit of the patient, said spring mechanism being the sole means for interconnecting said first device part and said second device part, said spring mechanism comprising: a rotatable spool; a line which is windable on to and off of the spool and has a portion leading away from the spool which is attached to said second device part; a support carrying said spool and attached to said first device part; and at least one spring acting with torsion on the spool to urge said spool in the rotational sense in which the line is wound up thereon.
Claim 3
Dependent Claim
13 words
A device according to claim 1, wherein said spring is a torsion spring.
Claim 4
Dependent Claim
35 words
A device according to claim 2, wherein said support is constituted by a cylindrical housing accommodating the spool and the torsion spring, and said housing carries means for attaching said housing to said first part.
Claim 5
Dependent Claim
54 words
A device according to claim 3, wherein said cylindrical housing fixedly carries on its axis means defining an axis of rotation for the spool, the torsion spring is accommodated in a spring barrel mounted to the spool for rotation therewith, and the torsion spring is connected between said axis-defining means and said spring barrel.
Claim 6
Dependent Claim
53 words
A device according to claim 4, wherein the cylindrical housing comprises two cylindrical parts each open at one end and which fit together at their open ends in a plane normal to the axis of said housing, said two cylindrical housing parts being relatively rotatable to adjust the tension of the torsion spring.
Claim 7
Dependent Claim
72 words
A device according to claim 1, intended for dynamic hand splinting, wherein said first device part comprises a splint for application to at least the region of the hand adjacent a finger, a substantially rigid outrigger having substantially parallel arms is mounted to said splint and the spool support is formed with mounting means adapted for mounting said spool support to the outrigger between the free ends of the parallel arms thereof.
Claim 8
Dependent Claim
33 words
A device according to claim 6, wherein said outrigger is mounted to said splint by means of a mounting plate and at least one fixing screw engaged into punched holes in said splint.
Claim 9
Dependent Claim
49 words
A device according to claim 7, wherein said first device part includes a soft hand wrap for at least the palm of the hand and the spool support is formed with mounting means adapted for mounting said spool support to a safety pin pinned to the soft hand wrap.
References Cited (Backward Citations)
US174031A
Cited
US1964998A
Cited
US2175756A
Cited
US3506214A
Cited
US3621650A
Cited
US4363553A
Cited
US4216922A
Cited
US4187996A
Cited
US4346857A
Cited
US4328794A
Cited
US4556184A
Cited
US4644938A
Cited
US4623113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-13 | 1992-06-13 | 1992-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-13 | 1996-06-13 | 1996-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-13 | 2000-06-13 | 2000-12-13 | $7700.00 | Window Closed / Lapsed |