Technology+of+Medicine

= =

__Technology Of Medicine Timeline__
Medicine has made some of the most amazing leaps in history... many devices and advances were made early in the century. In the year **1903** was an invention, this invention was of the **EKG** or **electrocardiogram**, which was by definition, 'a recording of the electrical activity of the heart over time produced by an **electrocardiograph**, usually in a noninvasive recording via skin electrodes.' It was improved by Willem Einthoven, by using an earlier invention he created known as the //string galvanometer// he was able to better read a pulse or heartbeat then the previous equipment.

Then in **1905** another invention was made. It is the **sphygmanometer** or a blood pressure measure. This is actually a tool we see still today, though modifications have been made, it is what we see at the doctors office when our blood pressure is taken. It is most commonly seen in the mechanical form. Shown here. Though there is also an electrical form, it is not as common as the mechanical form.

Though I"m making a large jump and skipping inventions of the //electron microscope and penicillin// I want to go to another very important medical advancement made in **1957.** The **artificial pacemaker** is medical device that delivers electric pulses to the heart, by doing this it maintains the pace of the heart. This is a device still in use but very modernized and more efficient for patients today. This device was created between two people Clarence Lillehei and Earl Bakken.

Another skip forward will take us to the early 1970's, and the creation of the **CT Scan**. Also known as the **Computed tomography** this invention was a way to retrieve a three-demensional picture of the inside of an object. In this case the scan is used for humans to look for tumors,cancer, and any other internal medical problems. The inventors of the CT scan are Godfrey Hounsfield and Allan Cormack. Though most commonly used on humans, the Ct scan is also used on other animals and objects.

From the first **artificial heart** in **1982**, was the **Jarvik-7,** it was created by Robert Jarvik, and was implanted into Barney Clark, by Dr. William DeVries ..... Mr.Clark lived 112 days after the transplant. One year later in **1983**, **H.I.V** was identified as the cause of the **AIDS**. In **1996** the sheep //Dolly// was the first mammal cloned, she died in 2003. Then in **1998** the first **//lymes disease vaccine//** is made. Then one of the most recent advancements came in **2007** ... scientists had discovered how to use a human skin cell to create new embryonic stem cells, a huge medical advancement.