Patent US3757790A successfully refreshed from Google Patents.
US3757790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Threshold analyzer and stimulator testing device with internal generator
Assignee: Individual
•
Filing: 1971-05-05
•
Granted: 1973-09-11
•
Expires: 1991-05-05
Abstract
Abstract A threshold analyzer including a stimulator testing device measures the minimum impulse energy required to stimulate a body organ using the actual body implanted stimulating electrode system. A stimllating device to be implanted in the body may be connected to the implanted electrode system and its output impulse energy measured. Means are provided to calibrate the threshold analyzer stimulator testing device so that readings taken at different times as well as on different patients will be suitable for correlation. Readings are indicated in terms of true current and voltage values.
Inventors
- 👤 C Herrmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:24
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/362; A61N1/37; A61N1/3706; A61N1/371
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
233 words
A threshold analyzer which comprises: a. an electrical power supply having an output; b. an internal means for generating electrical pulses having an input and an output, the input thereof operatively connected to the output of the power supply, the internal means for generating translating the power of the power supply into electrical pulses; c. a selectively variable current control means having an input and an output, the input thereof operatively connectable to the output of the internal means for generating electrical pulses and receiving electrical pulses therefrom, the output of the control means delivering selectively variable current pulses; d. a means for measuring pulse current and pulse voltage, the means for measuring including an input and an output; e. a first terminal operatively connectable to the input of the means for measuring, the first terminal being also operatively connectable to a body implantable stimulating pulse generator external to the threshold analyzer; f. a second terminal operatively connectable to the output of the means for measuring, the second terminal being operatively connectable to a body implantable stimulating electrode, the electrode being external to the threshold analyzer; g. switch means constructed and arranged to selectively interconnect selected portions of the threshold analyzer including, the current control means to the measuring means, the first terminal to the input of the means for measuring, and the output of the means for measuring to the second terminal.
Claim 2
Dependent Claim
233 words
A threshold analyzer which comprises: a. an electrical power supply having an output; b. an internal means for generating electrical pulses having an input and an output, the input thereof operatively connected to the output of the power supply, the internal means for generating translating the power of the power supply into electrical pulses; c. a selectively variable current control means having an input and an output, the input thereof operatively connectable to the output of the internal means for generating electrical pulses and receiving electrical pulses therefrom, the output of the control means delivering selectively variable current pulses; d. a means for measuring pulse current and pulse voltage, the means for measuring including an input and an output; e. a first terminal operatively connectable to the input of the means for measuring, the first terminal being also operatively connectable to a body implantable stimulating pulse generator external to the threshold analyzer; f. a second terminal operatively connectable to the output of the means for measuring, the second terminal being operatively connectable to a body implantable stimulating electrode, the electrode being external to the threshold analyzer; g. switch means constructed and arranged to selectively interconnect selected portions of the threshold analyzer including, the current control means to the measuring means, the first terminal to the input of the means for measuring, and the output of the means for measuring to the second terminal.
Claim 3
Dependent Claim
36 words
A threshold analyzer as defined in claim 1 wherein the voltage and the current measured by the means for measuring is the peak voltage and the peak current of the pulses received by the input thereof.
Claim 4
Dependent Claim
20 words
A threshold analyzer as defined in claim 1 including a visual pulse indicating means operatively connected to the pulse generator.
Claim 5
Dependent Claim
47 words
A threshold analyzer as defined in claim 3 wherein the visual pulse indicating means includes a light emitting diode and a transistor having an input and an output, the input being operatively connected to the pulse generating means the output being connected to the light emitting diode.
Claim 6
Dependent Claim
71 words
A threshold analyzer as defined in claim 1 wherein the means for measuring includes a voltage storAge capacitor and an error correcting means operatively connected thereto, the error correcting means further connected to the input of the means for measuring, so that a voltage signal stored on the capacitor is compared and corrected by the error correcting means to the peak voltage of electrical pulses received by the means for measuring.
Claim 7
Dependent Claim
210 words
A threshold analyzer and testing apparatus for body implantable stimulating pulse generators and body implanted electrode systems which comprises: a. an electrical power supply means; b. an internal pulse generating means operatively connected to the power supply means for translating the power of the power supply into electrical stimulating pulses; c. a selectively variable current control means operatively connected to the output of the internal pulse generating means for controlling the output thereof; d. a means including an input and an output thereto for measuring the pulse voltage and pulse current of electrical stimulating pulses; e. an input terminal operatively connectable to the input of the means for measuring and an output terminal operatively connectable to the output thereof; f. a multi-position switch constructed and arranged for selectively interconnecting preselected portions of the threshold analyzer and testing apparatus including the internal pulse generating means, the selectively variable current control means and the measuring means, and for selectively interconnecting the threshold analyzer and testing apparatus including selected portions thereof with a body implantable stimulating pulse generator and a body implanted electrode system, when the body implantable generator is operatively connected to the input terminal of the means for measuring and the electrode system is operatively connected to the output terminal thereof.
Claim 8
Dependent Claim
210 words
A threshold analyzer and testing apparatus for body implantable stimulating pulse generators and body implanted electrode systems which comprises: a. an electrical power supply means; b. an internal pulse generating means operatively connected to the power supply means for translating the power of the power supply into electrical stimulating pulses; c. a selectively variable current control means operatively connected to the output of the internal pulse generating means for controlling the output thereof; d. a means including an input and an output thereto for measuring the pulse voltage and pulse current of electrical stimulating pulses; e. an input terminal operatively connectable to the input of the means for measuring and an output terminal operatively connectable to the output thereof; f. a multi-position switch constructed and arranged for selectively interconnecting preselected portions of the threshold analyzer and testing apparatus including the internal pulse generating means, the selectively variable current control means and the measuring means, and for selectively interconnecting the threshold analyzer and testing apparatus including selected portions thereof with a body implantable stimulating pulse generator and a body implanted electrode system, when the body implantable generator is operatively connected to the input terminal of the means for measuring and the electrode system is operatively connected to the output terminal thereof.
Claim 9
Dependent Claim
71 words
A threshold analyzer as defined in claim 6 wherein the means for measuring includes a voltage storage capacitor and an error correcting means operatively connected thereto, the error correcting means further connected to the input of the means for measuring, so that a voltage signal stored on the capacitor is compared and corrected by the error correcting means to the peak voltage of electrical pulses received by the means for measuring.
Claim 10
Dependent Claim
223 words
A threshold analyzer which comprises: a. an electrical power supply; b. an internal pulse generating means operatively connectable to the power supply for translating electrical power from the power supply into electrical pulses, the pulse generating means having an output; c. a selectively variable current control means operatively connectable to the power supply, the control means having an input and an output, the input being connected to the output of the internal pulse generating means and the output thereof being connectable to an implanted stimulating electrode; d. a measuring means having an electrical sensing input and a visual output; e. a resistor; f. a first terminal to which a body implantable pulse generator, external to the threshold analyzer may be electrically connected; g. a second terminal to which a body implantable stimulating electrode may be electrically connected; h. switch means constructed and arranged to operatively connect the power supply to the internal pulse generating means, the current control means, and the measuring means; and, i. additional switch means constructed and arranged to operatively and sequentially connect the sensing input to the power supply, the first terminal to the sensing input, the output of the control means in parallel to the sensing input and to the second terminal, and the output of the control means to the resistor and the sensing input in parallel.
Claim 11
Dependent Claim
223 words
A threshold analyzer which comprises: a. an electrical power supply; b. an internal pulse generating means operatively connectable to the power supply for translating electrical power from the power supply into electrical pulses, the pulse generating means having an output; c. a selectively variable current control means operatively connectable to the power supply, the control means having an input and an output, the input being connected to the output of the internal pulse generating means and the output thereof being connectable to an implanted stimulating electrode; d. a measuring means having an electrical sensing input and a visual output; e. a resistor; f. a first terminal to which a body implantable pulse generator, external to the threshold analyzer may be electrically connected; g. a second terminal to which a body implantable stimulating electrode may be electrically connected; h. switch means constructed and arranged to operatively connect the power supply to the internal pulse generating means, the current control means, and the measuring means; and, i. additional switch means constructed and arranged to operatively and sequentially connect the sensing input to the power supply, the first terminal to the sensing input, the output of the control means in parallel to the sensing input and to the second terminal, and the output of the control means to the resistor and the sensing input 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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |