US4153053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing malar fractures using a hammer disimpactor
Assignee: Individual
•
Filing: 1977-09-12
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Granted: 1979-05-08
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Expires: 1997-09-12
Abstract
Abstract A device to reduce or set malar fractures, which does not depend on the strength of the operator, comprises a stainless steel rod with a hook on one end, a handle on the other end, a movable hammer which slides freely along the rod and two stops for the hammer, one at each end of the rod. The hook is inserted under the lower edge of the malar. The force required for separating the impacted bones is produced when the hammer hits the main stop built into the rod at the end opposite the hook, stops suddenly, thereby producing a force on the hook. Since the hook is in contact with the impacted bone, the force is communicated to the bone.
Inventors
- 👤 Eleazar Figallo E
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:29
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8866; A61B17/92; A61B2017/922
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
A method of reducing malar fractures using an instrument comprising a rod, a hook attached to one end of said rod, a mass slidably engaging said rod, and main stopping means connected to said rod between said mass and the end of said rod opposite said hook, for stopping said mass when said mass is sliding on said rod in the direction away from said hook, said method comprising the steps of: (a) making an incision in the skin in the vicinity of the fractured malar; (b) inserting the point of the hook of said instrument into the incision and positioning said hook so that said hook is under the lower edge of the malar; (c) securing said hook against the internal face of the malar; (d) causing said mass to slide on said rod and impact said main stopping means, whereby the force is transmitted to the bone producing a force of disimpaction thereon; and (e) unhooking the instrument from the malar and removing the instrument from the incision.
Claim 2
Independent Claim
170 words
A method of reducing malar fractures using an instrument comprising a rod, a hook attached to one end of said rod, a mass slidably engaging said rod, and main stopping means connected to said rod between said mass and the end of said rod opposite said hook, for stopping said mass when said mass is sliding on said rod in the direction away from said hook, said method comprising the steps of: (a) making an incision in the skin in the vicinity of the fractured malar; (b) inserting the point of the hook of said instrument into the incision and positioning said hook so that said hook is under the lower edge of the malar; (c) securing said hook against the internal face of the malar; (d) causing said mass to slide on said rod and impact said main stopping means, whereby the force is transmitted to the bone producing a force of disimpaction thereon; and (e) unhooking the instrument from the malar and removing the instrument from the incision.
Claim 3
Dependent Claim
31 words
A method of reducing malar fractures according to claim 1, wherein said instrument is so positioned after said step (c) that said main stopping means is elevated higher than said hook.
Claim 4
Dependent Claim
26 words
A method of reducing malar fractures according to claim 2 wherein said step (d) comprises pushing said mass up the rod toward said main stopping means.
References Cited (Backward Citations)
US2121193A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-07 | 1982-11-06 | 1983-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-07 | 1986-11-06 | 1987-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-07 | 1990-11-06 | 1991-05-08 | $7700.00 | Window Closed / Lapsed |