Doctor insights on:
What Meterials Are Pacemakers Made Of
A pacemaker is a device which sends electrical signals to the heart triggering heartbeats when needed. There are many ways to implant and configure a pacemaker; it may beat the top chambers (atria), lower chambers (ventricles) or both. Some systems stimulate both the left and right ventricles together. Pacemakers generally treat abnormally slow heart rhythms and certain ...Read more
What materials are prosthetics made from? What different kinds of materials (plastics, metals, etc…) are used to make prosthetics?
Acrylic: Methyl methacryliate is a resin based acrylic. ...Read more
For energy.: Many years ago, there were some pacemakers that had "nuclear batteries" - they were powered from the plutonium-238 radioisotope. These batteries lasted many times longer than even the modern batteries do. However, lithium-powered batteries are now the norm - I am not aware of any manufacturers selling a nuclear battery pacemaker in many years. http://www.nejm.org/doi/full/10.1056/nejmc072143. ...Read moreSee 1 more doctor answer
What materials are prosthetics made from? What different kinds of materials (plastics, metals, etc?) are used to make prosthetics?
More than ever: Ceramics, porcelains, metals (precious, semi precious, non precious), composites, acrylics. Others. ...Read more
No Mercury: The metal used is usually an alloy based on chromium and cobalt. This is a strong alloy and is usually tolerated quite well. Years ago a gold alloy was used; that may be quite expensive today. The acrylics are quite common and have been used for years. Some partials can also be made with other materials. This science has changed a bit. ...Read moreSee 2 more doctor answers
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. ...Read moreSee 1 more doctor answer
Several answers: There are several answers to this. From the cardiologist, ep doctor or ct surgeon. First one meets the criteria for pacing. Next several companies have their reps hold the device with them and hospitals hold them. We use routine venous sheaths to access the vein and flexible wires to guide wires to the heart then through techniques position the leads and secure device or pacemaker to them. ...Read moreSee 1 more doctor answer
Pacemaker: A pacemaker is an electronic device which uses a lead as an antenna to sense the heart's electrical activity. It uses the same lead(s) to deliver a small electrical impulse to the heart to make it contract if the heart isn't going as fast as the device was programmed to maintain. Pacemakers both sense heart activity and pace it to produce activity. They maintain heart rate. Other things too.... ...Read moreSee 1 more doctor answer
Internal & external: Implantable (internal) defibrillators remain in the body, whereas external defibrillators are the boxes with paddles that you see on tv shows. They both shock the heart out of life-threatening cardiac arrest rhythm if need be. There are automated external units that lay people can use; you put paddles on person's chest and the machine determines the rhythm and speaks commands to give a shock. ...Read moreSee 1 more doctor answer
AICD and pacer: An AICD almost always has a pacemaker as part of its circuitry. The ICD has a wire that monitors heart electrical function and circuitry to sense that electrical activity and respond with a cardioversion shock or a smaller pacemaker stimulus. The pacer doesn't have the cardioversion circuitry just the sense/pace circuitry. The ICD needs a bigger battery because it has to put out a larger discharge ...Read more
Molecular imaging: Nuclear medicine has the ability to examine the molecular basis of disease by using very low levels of radioactivity that targets the disease-specific biomarkers and specific organs. The downside is it uses radioactivity (very little) and has somewhat limited resolution, but the modern scanners are attached to other modalities such as ct or mri. ...Read moreSee 3 more doctor answers
Old vs new technolog: The whole cell pertussis,an early vaccine,was basically dead germs that were broken into pieces and given. This gave great protection, but almost all infants had high fevers by the 2nd or 3rd dose, and it could never be giver after age 6. Today's pertussis is a synthetic replica of part of the germ. Its "clean" origin produces almost no side effects and the vaccine can be given at any age ...Read more
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