In the past, before the existence of sophisticated technology like the Intensive Therapeutic Purification Machines (ITP), a collection apparatus called a Hematology Machine was all that doctors could use to draw large volumes of blood from a patient. A collection device for a standard blood specimen can measure the patient's blood platelets, red and white blood cells, and platelet counts, among other things. This kind of blood collection apparatus also contained a dialysis machine that could process and regulate the oxygenation of the blood. A dialysis machine is not that common to most hospitals today because oxygenation machines have already been replaced with an automated blood collection system, or an automated cell separation system.
Another commonly used blood collection device is a cannula, which is similar to a long, flexible needle that has been specifically made for drawing blood from specific areas of the body. A cannula is attached to the end of a thin plastic tube with a handle on one side, just like a sewing needle. The tube is connected to a bag containing a refrigerated container where the blood can be collected after it is drawn out of the cannula. In this way, the blood vessels are cut as necessary and the blood is collected for analysis.
Another common type of blood collection device is a process called phenylisket, which involves filling a cup with tap water and then placing a small plastic ring inside it. This ring contains a small quantity of insulin, which when inserted into a person's bloodstream will allow him to absorb glucose from the water. Once absorbed, glucose from the blood gets transferred into the blood vessels of the patient. The blood vessels themselves do not actually collect the glucose but rather act as connectors to do so.
Other common types of blood collection devices include rubber gloves and syringes. Gloves are often used to draw blood from a severely injured patient, allowing doctors to perform their diagnosis without risk of infection. Syringes are available in various sizes depending on the amount of blood that needs to be collected. Often, these syringes are available at pharmacies where nurses and other medical professionals can easily draw blood from patients. Depending on the patient's specific needs, these may come in tiny plastic tubes that allow for easy administration... Read more