Defibrillators

• US 3,258,013 A
• Filed: 07/01/1963
• Issued: 06/28/1966
• Est. Priority Date: 07/01/1963
• Status: Expired due to Term

• Current Assignee: Walter S. Druz
• Original Assignee: Walter S. Druz
• Inventors: Druz, Walter S.
• Application Number:
  US04/291,703
• Time in Patent Office: 1,093 Days
• US Class Current: 607/2
• CPC Class Codes: A61N 1/3904 External heart defibrillators [EHD]
• CPC Class Codes: A61N 1/3906 characterised by the form of the shockwave
• CPC Class Codes: A61N 1/3912 Output circuitry therefor, e.g. switches

Claims

1. A DIRECT-CURRENT MONOPULSE ELECTRICAL DEFIBRILLATOR COMPRISING:

A DELAY LINE DISCHARGING PULSING CIRCUIT HAVING AT LEAST TWO INDUCTANCE-CAPACITANCE SECTIONS FOR PRODUCING ON DISCHARGE A SINGLE DIRECT-CURRENT OUTPUT PULSE HAVING A SUBSTANTIALLY TRAPEZOIDAL WAVESHAPE;

MEANS FOR STORING A PREDETERMINED AMOUNT OF ENERGY IN SAID DELAY LINE DISCHARGE PULSING CIRCUIT;

AND MEANS, INCLUDING A PAIR OF ELECTRODES COUPLED TO SAID DELAY LINE DISCHARGING PULSING CIRCUIT AND ADAPTED TO BE APPLIED TO THE BODY OF A LIVING ORGANISM AT SPACED LOCATIONS ON OPPOSITE SIDES OF THE HEART, ACTUATABLE SUBSEQUENT TO THE STORAGE OF SAID ENERGY