US3661146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transducer arrangement for measuring blood flow
Assignee: Alcatel Lucent SAS
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Filing: 1969-12-31
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Granted: 1972-05-09
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Expires: 1989-12-31
Abstract
Abstract Perivascular transducer whose piezoelectric plate is bordered on one side thereof by a reflecting and/or absorbing mass and which is equipped with two plastic bands adapted to form a collar around the vessel which is intended to be subjected to the measurement.
Inventors
- 👤 Pierre Peronneau
- 👤 Fernand Leger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:06
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6846; A61B5/6867; A61B5/6876; A61B5/6879; A61B5/6884; A61B8/00; A61B8/06; A61B8/12; G; G01; G01F; G01F1/00; G01F1/66; G01F1/662; A61B8/44; A61B8/4444; A61B8/445; G01N; G01N2291/00; G01N2291/02; G01N2291/028; G01N2291/02836
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
Perivascular transducer arrangement comprising at least one transducer mounted within a cap open at one side and being formed by a piezoelectric plate, a body formed of a first material assuring a good acoustic transmission being disposed between one side of said piezoelectric plate and the opening of the cap, the opposite side of said plate within the cap being in contact with a body of material providing acoustic disengagement with respect to acoustic waves directed to said one side of said plate, said cap being secured to a band having two portions aligned on respective sides of the opening of the cap and adapted to be closed in the form of a collar around a vessel, electrical lead means extending through said cap and connected to said piezoelectric plate, said first material being a plastic mass and said material providing acoustic dis-engagement being a partial reflector and partial absorber of acoustic waves.
Claim 2
Dependent Claim
153 words
Perivascular transducer arrangement comprising at least one transducer mounted within a cap open at one side and being formed by a piezoelectric plate, a body formed of a first material assuring a good acoustic transmission being disposed between one side of said piezoelectric plate and the opening of the cap, the opposite side of said plate within the cap being in contact with a body of material providing acoustic disengagement with respect to acoustic waves directed to said one side of said plate, said cap being secured to a band having two portions aligned on respective sides of the opening of the cap and adapted to be closed in the form of a collar around a vessel, electrical lead means extending through said cap and connected to said piezoelectric plate, said first material being a plastic mass and said material providing acoustic dis-engagement being a partial reflector and partial absorber of acoustic waves.
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |