US3756246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for externally determining actual output of an implanted energy source
Assignee: American Optical Corp
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Filing: 1971-07-15
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Granted: 1973-09-04
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Expires: 1991-07-15
Abstract
Abstract Apparatus for externally determining actual output of an implanted energy source used for powering an electronic device implanted within a patient. The apparatus includes test circuitry and an externally operated control for engaging the test circuitry with the device. Variations in output of the device when operated in a testmode versus a normal operating mode are externally measured and are used to calculate or measure output of the energy source. A typical device which can be used with the present invention is an implantable pacer which is described in an illustrative embodiment of the invention.
Inventors
- 👤 S Thaler
- 👤 R Daynard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:33
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/362; A61N1/365; A61N1/37; A61N1/3706; A61N1/3708; A61N1/372; A61N1/378
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
Implanted apparatus comprising: a D.C. power supply; and means for determining precise actual value of voltage of said supply, said determining means comprising: first means connected to said supply for generating pulses with amplitudes proportional to said voltage; second means connected to said supply for generating a precise DC voltage less than said voltage; said first means including third means responsive to the operation of said second means for generating other pulses with fixed amplitudes proportional to said precise DC voltage; fourth means for mutually exclusively inhibiting operation of said first means and said third means; and fifth means for measuring a representation of the amplitudes of said pulses and said other pulses.
Claim 2
Dependent Claim
113 words
Implanted apparatus comprising: a D.C. power supply; and means for determining precise actual value of voltage of said supply, said determining means comprising: first means connected to said supply for generating pulses with amplitudes proportional to said voltage; second means connected to said supply for generating a precise DC voltage less than said voltage; said first means including third means responsive to the operation of said second means for generating other pulses with fixed amplitudes proportional to said precise DC voltage; fourth means for mutually exclusively inhibiting operation of said first means and said third means; and fifth means for measuring a representation of the amplitudes of said pulses and said other pulses.
Claim 3
Dependent Claim
17 words
Apparatus as recited in claim 1 and wherein said DC power supply comprises at least one battery.
Claim 4
Dependent Claim
26 words
Apparatus as recited in claim 1 and wherein said first means comprises capacitive means for charging towards said voltage and for discharging in a repetitive manner.
Claim 5
Dependent Claim
29 words
Apparatus as recited in claim 3 and wherein said third means comprises said capacitive means for charging towards said precise DC voltage and for discharging in a repetitive manner.
Claim 6
Dependent Claim
16 words
Apparatus as recited in claim 1 and wherein said second means comprises zener diode circuitry means.
Claim 7
Dependent Claim
28 words
Apparatus as recited in claim 1 and wherein said third means comprises capacitive means for charging towards said precise DC voltage and for discharging in a repetitive manner.
Claim 8
Dependent Claim
41 words
Apparatus as recited in claim 1 and wherein said fourth means comprises switch means for connecting said first means to said supply during a first switch position, and for connecting said second means to said supply during a second switch position.
References Cited (Backward Citations)
US3426748A
Cited
US3517663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |