US4137922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dilator for cervical canal
Assignee: Ortho Pharmaceutical Corp
•
Filing: 1975-05-21
•
Granted: 1979-02-06
•
Expires: 1995-05-21
Abstract
Abstract A novel inflatable device is disclosed for use in dilating various body cavities, and especially the human cervix, comprising an envelope member having an enlarged bulbous portion on one end, and a shield at the opposite end. The envelope member is inflatable with suitable gasses such as carbon dioxide, or liquids such as saline, distilled water and the like.
Inventors
- 👤 Robert I. Leininger
- 👤 Joseph R. Preston
- 👤 Brenton R. Lower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:11
CPC Classifications
A; A61; A61M; A61M29/00; A61M29/02; A61B; A61B17/00; A61B17/42; A61B2017/4216; A61B2017/4225
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
149 words
A body canal dilating device comprising a relatively non-elastic, non-expansible, collapsible, inflatable envelope, having two portions, the first said portion in the inflated state having a relatively constant diameter and a length sufficient to occlude a canal having more than one os, and the other of said portions contiguous with the first said portion and being a terminal enlarged bulbous portion having a diameter in excess of said constant diameter in the inflated state, a tubular inserter member entering the first said portion and while inside thereof extending therethrough and into the inside of the other of said portions, a shield located in proximity of the entrance to the first said portion and engaged with said tubular member, said tubular member being adapted to permit entry into said envelope of a pressurizing fluid, and fluid pressurizing means integral with said tubular member at a point external to said envelope.
Claim 2
Dependent Claim
149 words
A body canal dilating device comprising a relatively non-elastic, non-expansible, collapsible, inflatable envelope, having two portions, the first said portion in the inflated state having a relatively constant diameter and a length sufficient to occlude a canal having more than one os, and the other of said portions contiguous with the first said portion and being a terminal enlarged bulbous portion having a diameter in excess of said constant diameter in the inflated state, a tubular inserter member entering the first said portion and while inside thereof extending therethrough and into the inside of the other of said portions, a shield located in proximity of the entrance to the first said portion and engaged with said tubular member, said tubular member being adapted to permit entry into said envelope of a pressurizing fluid, and fluid pressurizing means integral with said tubular member at a point external to said envelope.
Claim 3
Dependent Claim
17 words
The device of claim 1 wherein said fluid pressurizing means has a predetermined amount of fluid therein.
Claim 4
Dependent Claim
13 words
The device of claim 1 wherein said fluid pressurizing means is a syringe.
Claim 5
Dependent Claim
14 words
The device of claim 1 wherein said fluid pressurizing means is a pressurized cannister.
Claim 6
Dependent Claim
15 words
The device of claim 4 wherein the fluid in said pressurizing means is carbon dioxide.
Claim 7
Dependent Claim
24 words
The device of claim 1 wherein said first portion is of a length sufficient to occlude the entire length of the human cervical canal.
Claim 8
Dependent Claim
22 words
The device of claim 6 wherein said first portion has a diameter in the inflated state of from 12 to 20 mm.
Claim 9
Dependent Claim
22 words
The device of claim 7 wherein said first portion in the collapsed state measures between 1 1/2 to 4 mm. in diameter.
Claim 10
Dependent Claim
26 words
The device of claim 8 wherein the first portion and said terminal enlarged bulbous portion are polyurethane having a molecular weight of between 20,000 and 80,000.
Claim 11
Dependent Claim
14 words
The device of claim 9 wherein said tubular inserter member is at least semirigid.
Claim 12
Dependent Claim
38 words
The method for dilating a body canal which comprises inserting the device of claim 1 into a body canal and actuating said fluid pressurizing means to introduce fluid into the envelope thereby causing dilatation of said body canal.
Claim 13
Dependent Claim
29 words
The method of claim 11 wherein the envelope is pressurized by means of a pressurized cannister having an equilibrium pressure of about 10 to 12 pounds per square inch.
Claim 14
Dependent Claim
16 words
The method of claim 11 wherein the envelope is pressurized by introduction of an aqueous fluid.
Claim 15
Dependent Claim
16 words
The method of claim 11 wherein the envelope is pressurized by the introduction of carbon dioxide.
References Cited (Backward Citations)
US1735519A
Cited
US2499045A
Cited
US3046988A
Cited
US3480017A
Cited
US3626949A
Cited
US3848602A
Cited
US3799170A
Cited
US3900033A
Cited
US3882852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-05 | 1982-08-07 | 1983-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-05 | 1986-08-07 | 1987-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-05 | 1990-08-07 | 1991-02-06 | $7700.00 | Window Closed / Lapsed |