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US3749099A
Expired / Lapsed
US
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Digital amniotome
Assignee: MEDSPEC Inc
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Filing: 1971-11-18
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Granted: 1973-07-31
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Expires: 1991-11-18
Abstract
Abstract The digital amniotome described herein is a split-ring like device adapted to be placed on a finger for rupturing the amniotic membrane during obstetrical procedures. The ring-lke device has a recessed portion which is normally positioned to be located at the pad of the fingertip and has a sharp tipped element thereon. Immediately contiguous to the recessed portion is a guard portion which extends out beyond the recessed portion to prevent the sharp tipped element from contacting the amniotic membrane. When pressure is applied to the guard portion, which is resilient, it retracts thereby exposing the sharp tipped element such that it is able to rupture the membrane.
Inventors
- 👤 J Haddonfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:09
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/42; A61B17/4208
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
140 words
A gynecological device adapted to be placed on a finger for rupturing the amniotic membrane during obstetrical procedures, said device comprising: a finger carried member having a ring-like portion adapted to grip said finger, said member having an elongated recessed portion adapted to be engaged by the end portion of said finger, said recessed portion having a sharp tipped element secured thereto to facilitate the rupture of said membrane, said member also having an elongated generally U-shaped raised guard portion contiguous to and surrounding said recessed portion adapted normally to protrude radially of said finger beyond said recessed portion, thereby to guard said sharp tipped element, said recessed portion and said raised portion each being resilient whereby the relative pressure between said finger tip and said membrane exposes said sharp tipped element to permit the rupture of the amniotic membrane.
Claim 2
Dependent Claim
140 words
A gynecological device adapted to be placed on a finger for rupturing the amniotic membrane during obstetrical procedures, said device comprising: a finger carried member having a ring-like portion adapted to grip said finger, said member having an elongated recessed portion adapted to be engaged by the end portion of said finger, said recessed portion having a sharp tipped element secured thereto to facilitate the rupture of said membrane, said member also having an elongated generally U-shaped raised guard portion contiguous to and surrounding said recessed portion adapted normally to protrude radially of said finger beyond said recessed portion, thereby to guard said sharp tipped element, said recessed portion and said raised portion each being resilient whereby the relative pressure between said finger tip and said membrane exposes said sharp tipped element to permit the rupture of the amniotic membrane.
Claim 3
Dependent Claim
19 words
A device according to claim 1 wherein said recessed portion and said guard portion have different degrees of resiliency.
Claim 4
Dependent Claim
18 words
A device according to claim 1 wherein said guard portion is more easily depressed than said recessed portion.
Claim 5
Dependent Claim
12 words
A device according to claim 1 wherein said device is integrally formed.
Claim 6
Dependent Claim
45 words
A device according to claim 1 wherein said finger carried member is a resilient single split-ring section, adapted to fit over different sized fingers, and the axial length of said ring section increases as a function of the circumferential distance from the split portion thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |