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A 37-year-old member asked:

What materials are pacemakers made out of?

2 doctor answers10 doctors weighed in
Dr. Louis Grenzer
Cardiology 56 years experience
Several things: The case is made of titanium, the batteries are lithium, /iodine cells, the electrodes are thin insulated wires, and the circuit boards contain resistors, diodes, capacitors, and semiconductors. The circuit boards function like a small EKG machine sensing spontaneous heart beats and if the heart does not beat, they send a small shock down the wires to make it beat.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Diana Metzger
31 years experience
Biocompatable stuff: There are multiple components, but all must be nontoxic, not cause immune sytem to react, sterilizable, and able to work in wet, warm and mobile environment. Usually the case for the pacemaker is made of titanium or a titanium alloy. The lead is also made of a metal alloy, covered with polyurethane or silicone. Other components are sealed inside the case and are not exposed to react to the body.
Created for people with ongoing healthcare needs but benefits everyone.

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Last updated Dec 4, 2019

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