US4753243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse rate monitor
Assignee: General Electric Co
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Filing: 1987-01-14
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Granted: 1988-06-28
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Expires: 2007-01-14
Abstract
Abstract A pulse rate monitor comprises first and second units coupled by a cable. The first unit has a microwave ocillator that provides a pulsating DC signal in accordance with the pulse rate to the second unit which amplifies the signal. Since the first unit does not comprise microwave components other than the oscillator, it can be miniturized. The second unit also supplies power to the first unit.
Inventors
- 👤 Daniel D. Mawhinney
- 👤 Henry F. Milgazo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:38
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/05; A61B5/0507; A61B5/02; A61B5/024
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
119 words
Apparatus for monitoring the pulse rate of a subject, said apparatus comprising: a first unit means having an oscillator adapted to be proximate said subject and drawing supply current in accordance with the subject loading thereon, said unit means providing a pulsating DC signal in accordance with the pulse rate of said subject; a cable coupled to said first unit means to receive said pulsating DC signal and to convey a supply voltage to said first unit means; and a second unit means adapted to be placed distant from said subject and coupled to said cable for receiving and amplifying said pulsating DC signal and to provide said voltage to said cable and thus to said first unit means.
Claim 2
Dependent Claim
119 words
Apparatus for monitoring the pulse rate of a subject, said apparatus comprising: a first unit means having an oscillator adapted to be proximate said subject and drawing supply current in accordance with the subject loading thereon, said unit means providing a pulsating DC signal in accordance with the pulse rate of said subject; a cable coupled to said first unit means to receive said pulsating DC signal and to convey a supply voltage to said first unit means; and a second unit means adapted to be placed distant from said subject and coupled to said cable for receiving and amplifying said pulsating DC signal and to provide said voltage to said cable and thus to said first unit means.
Claim 3
Dependent Claim
12 words
The apparatus of claim 1 wherein said cable comprises a shielded cable.
Claim 4
Dependent Claim
17 words
The apparatus of claim 1 wherein said second unit means provides power to said first unit means.
Claim 5
Dependent Claim
14 words
The apparatus of claim 1 wherein said second unit means comprises an operational amplifier.
Claim 6
Dependent Claim
12 words
The apparatus of claim 1 wherein said oscillator comprises a microwave oscillator.
Claim 7
Dependent Claim
15 words
The apparatus of claim 5 wherein said oscillator has a frequency of about 2450±50 MHz.
Claim 8
Dependent Claim
18 words
The apparatus of claim 1 wherein said oscillator comprises an antenna adapted to be disposed proximate said subject.
Claim 9
Dependent Claim
19 words
The apparatus of claim 4 wherein said antenna is adapted to be disposed proximate an artery of said subject.
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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) | 1991-06-28 | 1991-12-28 | 1992-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-28 | 1995-12-28 | 1996-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-28 | 1999-12-28 | 2000-06-28 | $7700.00 | Window Closed / Lapsed |