×

Implantable medical interventional device

  • US 5,342,404 A
  • Filed: 04/03/1992
  • Issued: 08/30/1994
  • Est. Priority Date: 04/03/1992
  • Status: Expired due to Term
First Claim
Patent Images

1. An implantable medical interventional device for treatment of pathologic tachycardias, comprising:

  • first sensor means adapted to detect cardiac activity of the patient in which the interventional device is implanted for producing a first electrical signal representative of such cardiac activity including heart rate of the patient,second sensor means adapted to detect movement and lack of movement indicative of physical activity and inactivity of the patient for producing a second electrical signal representative of the patient'"'"'s activity status,generator means for selectively generating electrical waveforms to be applied to the patient'"'"'s heart to break a pathologic tachycardia, andcontrol means setting a predetermined heart rate and responsive to said first and second electrical signals as complementary criteria for distinguishing a heart rate of the patient exceeding the predetermined rate during a period of physical activity by the patient indicative of a pathologic tachycardia requiring treatment from a physiologic tachycardia attributable to patient activity, and including activation means responsive to a decision by said control means that the patient is experiencing a pathologic tachycardia for triggering said generator means to generate an electrical waveform having characteristics selected to break the tachycardia.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×