US3707974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Body organ stimulator with voltage converter
Assignee: Individual
•
Filing: 1970-12-11
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Granted: 1973-01-02
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Expires: 1990-12-11
Abstract
Abstract An organ stimulator is provided having a power supply, a pulse generating circuit, a voltage converter and output terminals. The voltage converter includes at least one capacitor which is arranged such that, during the interpulse interval between pulses from the pulse generator, the capacitor charges to approximately the voltage of the power supply and upon application of a pulse to the voltage converter, the combined voltages of the power supply and the charged capacitor are supplied to the output terminals. A novel current limiting circuit is also provided which regulates the output pulse current of the pacer.
Inventors
- 👤 W Raddi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:42
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/362; H; H02; H02M; H02M3/00; H02M3/02; H02M3/04; H02M3/06; H02M3/07; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
228 words
A body implantable artificial cardiac pacer comprising the combination, a. a body compatible implantable insulating encapsulation container, b. a power supply in the encapsulation container, c. a pulse generating circuit in the encapsulation container operatively connected to the power supply for producing a sequence of electrical pulses with an interpulse interval of preassigned duration. d. a first output terminal forming at least a portion of a wall of the encapsulation container, e. a second output terminal comprising an electrode lead extending from the encapsulation container, f. a plurality of capacitors in the encapsulation container, g. a plurality of first circuit means in the encapsulation container operatively connecting each of the capacitors in parallel with the power supply during the interpulse interval between adjacent ones of the pulses generated by the pulse generating circuit to permit each capacitor to charge to approximately the voltage of the power supply during each interpulse interval, and, h. second circuit means in the encapsulation container operatively connected to the pulse generating circuit and to the capacitors and being responsive to pulses from the pulse generating circuit for connecting the charged capacitors in series with each other, in series with the power supply and in series circuit with the first and second output terminals whereby to supply the combined voltages of the power supply and each of the charged capacitors to the output terminals.
Claim 2
Dependent Claim
228 words
A body implantable artificial cardiac pacer comprising the combination, a. a body compatible implantable insulating encapsulation container, b. a power supply in the encapsulation container, c. a pulse generating circuit in the encapsulation container operatively connected to the power supply for producing a sequence of electrical pulses with an interpulse interval of preassigned duration. d. a first output terminal forming at least a portion of a wall of the encapsulation container, e. a second output terminal comprising an electrode lead extending from the encapsulation container, f. a plurality of capacitors in the encapsulation container, g. a plurality of first circuit means in the encapsulation container operatively connecting each of the capacitors in parallel with the power supply during the interpulse interval between adjacent ones of the pulses generated by the pulse generating circuit to permit each capacitor to charge to approximately the voltage of the power supply during each interpulse interval, and, h. second circuit means in the encapsulation container operatively connected to the pulse generating circuit and to the capacitors and being responsive to pulses from the pulse generating circuit for connecting the charged capacitors in series with each other, in series with the power supply and in series circuit with the first and second output terminals whereby to supply the combined voltages of the power supply and each of the charged capacitors to the output terminals.
Claim 3
Dependent Claim
131 words
A body implantable artificial cardiac pacer as set forth in claim 1 wherein the plurality of first circuit means each comprise a charging resistor operatively connected to one side of an associated capacitor and a diode operatively connected to the other side of an associated capacitor such that each charging resistor, capacitor and diode combination is connected in parallel across the power supply, and wherein the second circuit means comprise a plurality of transistors with there being one more transistor than there are capacitors, the transistors being operatively connected to the pulse generating circuit and with the capacitors and being responsive to pulses from the pulse generating circuit to connect the capacitors in series with each other, in series with the power supply and in series circuit with the output terminals.
Claim 4
Dependent Claim
33 words
A body implantable artificial cardiac pacer as set forth in claim 1 wherein said power supply is characterized as having a terminal voltage in the range from about 1 to about 3 volts.
Claim 5
Dependent Claim
31 words
A body implantable artificial cardiac pacer as set forth in claim 1 and further including means operatively associated with the second circuit means to limit the output current of the pacer.
Claim 6
Dependent Claim
160 words
In a body organ stimulator, the combinatiOn comprising: a power supply, a pulse generating circuit operatively connected to the power supply for producing a sequence of electrical pulses with an interpulse interval of preassigned duration, output terminals operatively connected to the pulse generating device, a plurality of capacitors, a plurality of first circuit means operatively connecting each of the capacitors in parallel with the power supply during the interpulse interval between adjacent ones of the pulses generated by the pulse generating circuit to permit each capacitor to charge to the voltage of the power supply during each interpulse interval, and second circuit means operatively connected to the pulse generating circuit and to the capacitors and being responsive to pulses from the pulse generating circuit for connecting the capacitors in series with the power supply and in series circuit with the output terminals whereby to supply the combined voltages of the power supply and the charged capacitors to the output terminals.
Claim 7
Dependent Claim
160 words
In a body organ stimulator, the combinatiOn comprising: a power supply, a pulse generating circuit operatively connected to the power supply for producing a sequence of electrical pulses with an interpulse interval of preassigned duration, output terminals operatively connected to the pulse generating device, a plurality of capacitors, a plurality of first circuit means operatively connecting each of the capacitors in parallel with the power supply during the interpulse interval between adjacent ones of the pulses generated by the pulse generating circuit to permit each capacitor to charge to the voltage of the power supply during each interpulse interval, and second circuit means operatively connected to the pulse generating circuit and to the capacitors and being responsive to pulses from the pulse generating circuit for connecting the capacitors in series with the power supply and in series circuit with the output terminals whereby to supply the combined voltages of the power supply and the charged capacitors to the output terminals.
Claim 8
Dependent Claim
23 words
In a body organ stimulator as set forth in claim 20 wherein the power supply comprises a plurality of batteries connected in parallel.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |