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US3782389A Expired / Lapsed US ⏱️ 0.0 years remaining

Computer controlled defibrillator

Assignee: HAS MEDICAL Inc
•
Filing: 1972-01-20
•
Granted: 1974-01-01
•
Expires: 1992-01-20
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Abstract

Abstract A computer controlled defibrillator comprising a set of electrodes which are engageable with a patient and which are connected to a source of electrical energy by a circuit means. The circuit means comprises storage capacitors, energy selector, computer, manual and reset switches, voltage monitor, current monitor, and output meter. The computer responds to certain external inputs, automatic and manual, and controls the output delivered to the patient. The energy selector permits the selection of the energy which is desired to be delivered to the patient. The sequence is started by closing the manual reset switch which zeroes the output meter and activates the power supply (electric energy) at a voltage which is dependent on the energy selector. The energy drived from the power supply is stored in the storage capacitors. The energy selector, which is manually set to the energy desired, also feeds an input to the computer. When the manual switch is activated, the computer causes the stored energy source to be connected to the patient through the electrodes. The current monitor and voltage monitor feed instantaneous signals to the computer which computes the energy as a continuous integration process. When the computer energy equals the selected energy, the computer causes the energy source to be disconnected from the patient. The total energy delivered to the patient is indicated as a steady reading on the output meter.

Inventors

  • 👤 D Bell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 09:33
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/38; A61N1/39; A61N1/3925; A61N1/3937

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 145 words
A defibrillator comprising in combination, an electrical power source, a set of electrodes engageable with a patient, circuit means connecting said power source to said set of electrodes comprising, a computer means, a storage capacitor means for storing energy derived from said power source, an energy selector means for selecting the energy to be delIvered to the patient, said energy selector also feeding an input to said computer means, a switch means for causing the stored energy to be connected to the patient, said switch means being operatively electrically connected to said computer means, a power monitor means for feeding signals to said computer means when said stored energy is delivered to the patient, said computer means computing the energy delivered to the patient and causing the delivery of energy to the patient to be discontinued when the computed energy substantially equals the selected energy.
Claim 2
Dependent Claim 145 words
A defibrillator comprising in combination, an electrical power source, a set of electrodes engageable with a patient, circuit means connecting said power source to said set of electrodes comprising, a computer means, a storage capacitor means for storing energy derived from said power source, an energy selector means for selecting the energy to be delIvered to the patient, said energy selector also feeding an input to said computer means, a switch means for causing the stored energy to be connected to the patient, said switch means being operatively electrically connected to said computer means, a power monitor means for feeding signals to said computer means when said stored energy is delivered to the patient, said computer means computing the energy delivered to the patient and causing the delivery of energy to the patient to be discontinued when the computed energy substantially equals the selected energy.
Claim 3
Dependent Claim 20 words
The combination of claim 1 wherein said power monitor means comprises a voltage monitor means and a current monitor means.
Claim 4
Dependent Claim 22 words
The combination of claim 1 wherein said circuit means has a visual output meter which indicates the energy delivered to the patient.
Claim 5
Dependent Claim 146 words
A defibrillator comprising in combination, an electrical power source, a set of electrodes engageable with a patient, circuit means connecting said power source to said set of electrodes comprising, a computer means, a storage capacitor means for storing energy derived from said power source, an energy selector means for selecting the energy desired to be delivered to the patient, a switch means for causing the stored energy to be connected to the patient, said switch means being operatively electrically connected to said computer means, a power monitor means for feeding signals to said computer means when said stored energy is delivered to the patient, said circuit means having a visual output means for indicating the energy delievered to the patient, said computer means computing the energy actually delivered to the patient and causing said visual output means to indicate the energy actually delivered to the patient.
Claim 6
Dependent Claim 146 words
A defibrillator comprising in combination, an electrical power source, a set of electrodes engageable with a patient, circuit means connecting said power source to said set of electrodes comprising, a computer means, a storage capacitor means for storing energy derived from said power source, an energy selector means for selecting the energy desired to be delivered to the patient, a switch means for causing the stored energy to be connected to the patient, said switch means being operatively electrically connected to said computer means, a power monitor means for feeding signals to said computer means when said stored energy is delivered to the patient, said circuit means having a visual output means for indicating the energy delievered to the patient, said computer means computing the energy actually delivered to the patient and causing said visual output means to indicate the energy actually delivered to the patient.

References Cited (Backward Citations)

US2817817A Cited
US2919408A Cited
DE1076286B Cited
US3258013A Cited
US3605754A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-31 1977-07-02 1978-01-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-31 1981-07-02 1982-01-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-31 1985-07-02 1986-01-01 $7700.00 Window Closed / Lapsed

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