Circulatory System

        
   
 

 

  

Defibrillator

ECG Unit

Heart Pump

Hermatology Analyzer

Pulse Oximeter

Sphygmananometer

MRI

 

Purpose: To treat cardiac disorders by correcting erratic heartbeat so the heart pumps normally.
Usage Method: A strong electrical shock is applied to the heart.

Portable: Usually yes for personal ones.

Parts of machine:

  • Pacemaker – sends low-voltage electrical impulses to heart to make it beat normally
  • Defibrillating electrode(s) or sensor pads that
    a) detect and analyse the cardiac rhythm
    b) supply the actual electrical shock to the heart if needed
  
   
   

The automated defibrillator may be implanted (internal) or left outside (external).

A tiny computer aboard the defibrillator perpetually monitors the heartbeat and activates a built-in conventional pacemaker if arrhythmia (irregular heartbeat) is detected. If the pacemaker is ineffective, a small defibrillating electrical jolt to the heart is delivered. Stronger jolts to reset the heart rate may be delivered if necessary.

  • Internal - May be implanted in the patient’s chest. Electrodes supply the electrical shock.
  • External - Used in mass transport vehicles e.g. aeroplanes, ambulances and in public buildings e.g. airports. Sensor pads begin analysing cardiac rhythm when applied to patient’s skin and decide on the necessity of an electrical shock.

  • Convenience and safety: newer models of internal defibrillators are small enough to require only minor operations.
  • Greater comfort: since the defibrillator is in direct contact with the heart the patient does not feel the pacemaker when it operates. Even the low-level defibrillator charge is insignificant.
    High success rates

  • Slight physical irritation by the device’s implementation

   
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