US3916906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multihead dilator
Assignee: Individual
•
Filing: 1974-04-25
•
Granted: 1975-11-04
•
Expires: 1994-04-25
Abstract
Abstract A multihead dilator for dilating an anal opening, comprises a generally cylindrically shaped member with multihead sections or tapered portions or nodules. A plurality of flexible folds may be interposed about the periphery of and along the length of the body of the dilator. A flange that is integral with the end of the body at one end of such body of the dilator, may be open in the all-rigid multihead dilator, or may have a valve for injecting air and thereby pressurize the dilator which may have fold portions so that portions of the dilator between heads are increased in diameter.
Inventors
- 👤 Martin E Gerry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:18
CPC Classifications
A; A61; A61M; A61M29/00; A61M29/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
A multihead dilator, for dilating a rectal portion, comprising in combination: a generally cylindrically shaped hollow member; a flange located at one end of the member integral with said member; and a plurality of tapered heads of different diameters integral with and located at intervals along the outer periphery of the member, the head with the smallest diameter being located at another end of the member opposite said one end, each of the heads being circumjacent the perimeter of said generally cylindrically shaped hollow member, said member having a central bore extending from the flange to substantially said another end and being narrowed in diameter between said heads and between the head having the largest diameter and the flange, portions of said member having the narrowed diameters between the heads are of foldable material.
Claim 2
Dependent Claim
134 words
A multihead dilator, for dilating a rectal portion, comprising in combination: a generally cylindrically shaped hollow member; a flange located at one end of the member integral with said member; and a plurality of tapered heads of different diameters integral with and located at intervals along the outer periphery of the member, the head with the smallest diameter being located at another end of the member opposite said one end, each of the heads being circumjacent the perimeter of said generally cylindrically shaped hollow member, said member having a central bore extending from the flange to substantially said another end and being narrowed in diameter between said heads and between the head having the largest diameter and the flange, portions of said member having the narrowed diameters between the heads are of foldable material.
Claim 3
Dependent Claim
23 words
The invention as stated in claim 1, wherein said hollow member has an aperture a said other end in line with the bore.
Claim 4
Dependent Claim
40 words
The invention as stated in claim 1, including: valve means adapted to the flange at the opening of the central bore for blocking said opening and for providing inflating capability of said bore so as to expand the foldable material.
Claim 5
Dependent Claim
138 words
A multihead dilator, for dilating a rectal portion, comprising in combination: a generally cylindrical shaped hollow member; a flange located at one end of the member integral with said member; and a plurality of tapered heads of different diameters integral with and located at intervals along the outer periphery of the member, the head with the smallest diameter being located at another end of the member opposite said one end, each of the heads being circumjacent the perimeter of said generally cylindrically shaped hollow member, said member having a central bore extending from the flange to substantiallly said another end and being narrowed in diameter between said heads and between the head having the largest diameter and the flange, the portion of the member between the head having the largest diameter and the flange is of foldable material.
Claim 6
Dependent Claim
138 words
A multihead dilator, for dilating a rectal portion, comprising in combination: a generally cylindrical shaped hollow member; a flange located at one end of the member integral with said member; and a plurality of tapered heads of different diameters integral with and located at intervals along the outer periphery of the member, the head with the smallest diameter being located at another end of the member opposite said one end, each of the heads being circumjacent the perimeter of said generally cylindrically shaped hollow member, said member having a central bore extending from the flange to substantiallly said another end and being narrowed in diameter between said heads and between the head having the largest diameter and the flange, the portion of the member between the head having the largest diameter and the flange is of foldable material.
Claim 7
Dependent Claim
40 words
The invention as stated in claim 4, including: valve means adapted to the flange at the opening of the central bore for blocking said opening and for providing inflating capability of said bore so as to expand the foldable material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |