US3720201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable body fluid pressure monitor
Assignee: RAMTECH
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Filing: 1970-10-28
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Granted: 1973-03-13
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Expires: 1990-10-28
Abstract
Abstract A pressure monitoring device is disclosed which is designed to be discarded after each use. This device utilizes a tube which is separated by a flexible diaphragm. One end of the tube is attached to the source of pressure, and the distal end is attached to a pressure sensing device. The pressure sensing device is of any standard reusable type and it does not require sterilization. The tube and its components are made of inexpensive, sterilizable material and are designed to be disposed of after one use.
Inventors
- 👤 M Ramsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:59
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/021; A61B5/0215; A61B5/03; A61B5/031
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
159 words
A disposable device for use in a fluid-pressure monitor, comprising an elongated tubular container, means on one end of said tubular container adapted to place the interior of said tubular container in communication with the system to be monitored, a flexible impervious diaphragm received within said tubular structure, said diaphragm separating said tubular container into upper and lower chambers, insert means placed within said upper chamber to maintain said diaphragm in an extended position, a one-hole resilient stopper mounted in said other end of said tubular container, said stopper extending into said diaphragm to form a fluid tight seal between the internal surface of said tubular container, said diaphragm, and the external surface of said stopper, said stopper being adapted to receive pressure sensing means therein, a stopper cover engaging said stopper, said stopper cover being biased against the external surface of said container in a fixed relationship by a retaining band to prevent accidental dislodging of said stopper.
Claim 2
Dependent Claim
159 words
A disposable device for use in a fluid-pressure monitor, comprising an elongated tubular container, means on one end of said tubular container adapted to place the interior of said tubular container in communication with the system to be monitored, a flexible impervious diaphragm received within said tubular structure, said diaphragm separating said tubular container into upper and lower chambers, insert means placed within said upper chamber to maintain said diaphragm in an extended position, a one-hole resilient stopper mounted in said other end of said tubular container, said stopper extending into said diaphragm to form a fluid tight seal between the internal surface of said tubular container, said diaphragm, and the external surface of said stopper, said stopper being adapted to receive pressure sensing means therein, a stopper cover engaging said stopper, said stopper cover being biased against the external surface of said container in a fixed relationship by a retaining band to prevent accidental dislodging of said stopper.
Claim 3
Dependent Claim
159 words
A disposable device for use in a fluid-pressure monitor, comprising an elongated tubular container, means on one end of said tubular container adapted to place the interior of said tubular container in communication with the system to be monitored, a flexible impervious diaphragm received within said tubular structure, said diaphragm separating said tubular container into upper and lower chambers, insert means placed within said upper chamber to maintain said diaphragm in an extended position, a one-hole resilient stopper mounted in said other end of said tubular container, said stopper extending into said diaphragm to form a fluid tight seal between the internal surface of said tubular container, said diaphragm, and the external surface of said stopper, said stopper being adapted to receive pressure sensing means therein, a stopper cover engaging said stopper, said stopper cover being biased against the external surface of said container in a fixed relationship by a retaining band to prevent accidental dislodging of said stopper.
Claim 4
Dependent Claim
159 words
A disposable device for use in a fluid-pressure monitor, comprising an elongated tubular container, means on one end of said tubular container adapted to place the interior of said tubular container in communication with the system to be monitored, a flexible impervious diaphragm received within said tubular structure, said diaphragm separating said tubular container into upper and lower chambers, insert means placed within said upper chamber to maintain said diaphragm in an extended position, a one-hole resilient stopper mounted in said other end of said tubular container, said stopper extending into said diaphragm to form a fluid tight seal between the internal surface of said tubular container, said diaphragm, and the external surface of said stopper, said stopper being adapted to receive pressure sensing means therein, a stopper cover engaging said stopper, said stopper cover being biased against the external surface of said container in a fixed relationship by a retaining band to prevent accidental dislodging of said stopper.
Claim 5
Dependent Claim
29 words
A disposable device as claimed in claim 1, including pressure-sensing means removably inserted into said stopper hole and sealingly received therein to record pressure variations within said upper chamber.
Claim 6
Dependent Claim
23 words
A disposable device as claimed in claim 2 wherein said pressure sensing means comprises a standard aneroid manometer having a pressurE sensing nipple.
Claim 7
Dependent Claim
41 words
A disposable device as claimed in claim 1, wherein said elongated tubular structure has said other end terminating in a radial flange which acts as a stop to prevent said retaining band from slipping off the end of said tubular container.
Claim 8
Dependent Claim
27 words
A disposable, device as claimed in claim 1, wherein said stopper cover is seated over said stopper to cooperate with said stopper to seal said stopper hole.
Claim 9
Dependent Claim
16 words
A disposable device as claimed in claim 1, wherein said stopper cover is a frangible membrane.
Claim 10
Dependent Claim
16 words
A disposable device as claimed in claim 1, wherein said lower chamber contains a saline solution.
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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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |