US3766923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for treating sub-unqual hematoma
Assignee: United States Department of Health and Human Services
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Filing: 1972-04-03
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Granted: 1973-10-23
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Expires: 1992-04-03
Abstract
Abstract A device for treating sub-ungal hematoma having guide means and plunger means. The plunger means includes a metal tip which is heated and pushed through the guide means which has been affixed to the nail above the injured area. The heated metal tip melts a channel through the nail to a pool of blood or hematoma beneath the same. When the plunger means is withdrawn, the entrapped blood is allowed to drain.
Inventors
- 👤 J Boretos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:43
CPC Classifications
A; A61; A61B; A61B18/00; A61B17/00; A61B17/32; A61B17/54; A61B17/34; A61B17/3403
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
A device for relieving the pressure and concomitant pain caused by a sub-ungual hematoma, said device comprising guide means having an upstanding tubular guide member having a central axial bore and a flange portion adapted to be mounted on said nail above said hematoma; and plunger means having a heatresistant, heat-insulating handle portion and a metal nailpuncturing portion, said nail-puncturing portion being smaller in diameter than said bore, whereby when said nail-puncturing portion is heated and applied to said nail through said guide means, it will melt an opening in said nail to provide drainage of said hematoma to thereby relieve said pressure and pain.
Claim 2
Independent Claim
105 words
A device for relieving the pressure and concomitant pain caused by a sub-ungual hematoma, said device comprising guide means having an upstanding tubular guide member having a central axial bore and a flange portion adapted to be mounted on said nail above said hematoma; and plunger means having a heatresistant, heat-insulating handle portion and a metal nailpuncturing portion, said nail-puncturing portion being smaller in diameter than said bore, whereby when said nail-puncturing portion is heated and applied to said nail through said guide means, it will melt an opening in said nail to provide drainage of said hematoma to thereby relieve said pressure and pain.
Claim 3
Dependent Claim
13 words
A device as defined in claim 1, wherein said metal is stainless steel.
Claim 4
Dependent Claim
22 words
A device as claimed in claim 1, wherein said guide means and said handle portion are fabricated of a polymeric plastic material.
Claim 5
Dependent Claim
12 words
A device as defined in claim 3, wherein said plastic is polytetrafluoroethylene.
Claim 6
Dependent Claim
58 words
A device as defined in claim 1, wherein said plunger means has a shank portion between said nail-puncturing portion and said handle portion, said shank portion being greater in diameter than said nail-puncturing portion and said bore, and said nail-puncturing portion having a length greater than the length of said bore by approximately the thickness of said nail.
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |