US4059113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aspirators for medical purposes
Assignee: Individual
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Filing: 1975-09-29
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Granted: 1977-11-22
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Expires: 1995-09-29
Abstract
Abstract Vacuum aspirator for medical use of the kind which is required to be sterilized by steam and then evacuated so as to be ready for use. Object of the invention is to provide an aspirator which is suitable for repeated use and re-sterilization. The aspirator is provided with an outwardly-opening, non-return valve which may be in a closure plug of a flask of the aspirator or mounted at or inserted in the end of a suction connection remote from the flask of the aspirator.
Inventors
- 👤 Dieter Beinsen
- 👤 Otto Kribitzneck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:39
CPC Classifications
A; A61; A61J; A61J1/00; A61M; A61M1/00; A61M1/64; A61M1/66; A61M1/71; A61M1/73; A61M1/732; F; F16; F16K; F16K51/00; F16K51/02; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3109; Y10T137/4238; Y10T137/4245; Y10T137/4266
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
A vacuum aspirator for removing fluids from body cavities comprising a container for receipt of such fluids, a closure for closing said container, means supported by said closure for receiving and thereafter directing said fluids through said closure into said container, combined valve means operatively associated with said closure for sequentially admitting pressurized steam to interior portions of said container and thereafter evacuating the same, said valve means including a first one-way inwardly opening inlet valve portion normally biased in a closed position to admit steam above a predetermined relative pressure therepast and a second one-way outwardly opening outlet valve portion normally biased in a closed position to permit the passage of gas within said container outwardly thereof during evacuation of said container, said receiving means and said valve means operable to maintain said container under vacuum until use of said aspirator.
Claim 2
Dependent Claim
142 words
A vacuum aspirator for removing fluids from body cavities comprising a container for receipt of such fluids, a closure for closing said container, means supported by said closure for receiving and thereafter directing said fluids through said closure into said container, combined valve means operatively associated with said closure for sequentially admitting pressurized steam to interior portions of said container and thereafter evacuating the same, said valve means including a first one-way inwardly opening inlet valve portion normally biased in a closed position to admit steam above a predetermined relative pressure therepast and a second one-way outwardly opening outlet valve portion normally biased in a closed position to permit the passage of gas within said container outwardly thereof during evacuation of said container, said receiving means and said valve means operable to maintain said container under vacuum until use of said aspirator.
Claim 3
Dependent Claim
23 words
Apparatus according to claim 1, in which the one way outlet valve is positioned in a tube which is connected to the container.
Claim 4
Dependent Claim
76 words
Apparatus according to claim 2, in which the one-way outlet valve has a cylindrical housing having a connection piece inserted into the end of the connecting tube, the housing having a conical valve seating therein, and a valve closure member in the form of a ball loaded by means of a conical spring against the seating, the larger diameter end of the spring engaging against the end of the valve body remote from the valve seating.
Claim 5
Dependent Claim
16 words
The aspirator construction of claim 1, said inlet and outlet valve portions being separate valve members.
Claim 6
Dependent Claim
16 words
The aspirator construction of claim 4, wherein such separate valve members are positioned within said closure.
Claim 7
Dependent Claim
30 words
The aspirator construction of claim 4, including tube means, one of said valve members positioned to close said tube means, said tube means in turn connected to said receiving means.
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) | 1980-11-21 | 1981-05-23 | 1981-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-21 | 1985-05-23 | 1985-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-21 | 1989-05-23 | 1989-11-22 | $7700.00 | Window Closed / Lapsed |