pacemakers-ppt1-150125070247-conversion-gate01 (2).pdf

PACMAKERS AND TYPES

1. PACEMAKERS
SEMINAR BY
CB.EN.U4ECE11135
NALAM.TULASI HAAR
AMRITA VISHWA VIDYAPEETAM

2. ELECTRICAL SYSTEM IN THE HEART

4. WHEN DO WE NEED A PACEMAKER ???
•Bradycardia–aconditioninwhichtheheartbeatstooslowly–
lessthan60beatsperminute
•Tachycardia–aconditioninwhichtheheartbeatstoofast–
morethan80beatsperminute
•Atrialfibrillation–theupperchambersoftheheartbeatrapidly
•Heartfailure–aconditioninwhichtheheartbeatisnot
sufficienttosupplyanormalvolumeofblood

5. WHAT IS A PACEMAKER
The basic parts :
•Power source
•Pulse generator
•Electrodes

7. UNIPOLAR AND BIPOLAR
•
+
Anode
Cathode
Anode
Cathode

8. HISTORY
•Hymans pacemaker-1932
•Implantable pacemaker-1958
•Demand pacemaker-1964
•Rate-responsive-

9. HYMANS PACEMAKER
•hand crank (F)
•spring motor (D)
•magneto-generator
(A)
•interrupter disc
•magnet pieces
(B’ and B”)
•impulse controller
(G)
•electrode needle
(L)
•neon lamp (C)

10. IMPLANTABLE PACEMAKER
•Pulse amplitude-10mA
•Rate-60 beats per min
•Current drain-12µA
•10 mercury-zinc cells were
used
•Continuous operation 5
years

11. ECG
Turn-on period(t0)
Pulse period(t0-t1)
Relaxation period(t2)

12. DEMAND PACEMAKER

13. RATE-RESPONSIVE PACEMAKERS

15. BLOCK DIAGRAM

16. FUTURE PACEMAKER-WICS

17. TELEMETRY

18. References
•www.springer.com
•http://www.durofy.com
•https://wiki.engr.illions.edu
•http://www.medtronicfeatures.com

19. QUESTIONS ???

20. THANK YOU