Doctors and scientists have come up with lots of gadgets that can take over for parts of the body that break or wear out.
Artificial blood, on the other hand, can be mind boggling. One reason is that most people think of blood as more than just connective tissue that carries oxygen and nutrients. Instead, blood represents life. Many cultures and religions place special significance on it, and its importance has even affected the English language. You might refer to your cultural or ancestral traits as being in your blood. Your family members are your blood relatives. If you're outraged, your blood boils. If you're terrified, it runs cold.

Better known as blood surrogates/substitutes, artificial blood serves two main purposes like filling the fluid volume and carry oxygen and other gases in blood through the entire cardiovascular system. It should be noted that nothing could replace the human blood since it performs innumerable other functions apart from these. So the accurate term for the product performing first function could be volume expanders and the gas carriers could be named Oxygen therapeutics.
In simple words, Volume expanders are certain passive materials which raise the blood quantity. They are of two types, mainly colloid based like Voluven, Haemaccel, gelofusin etc. and crystalloid based where Ringer's lactate, normal saline are examples. The case of Oxygen Therapeutics, they function as a substitute for the oxygen carrying ability of the body fluid. Common examples are Hemopure, Oxygent, PolyHeme and Perftoran. Depending on the mode of the transport mechanism, Oxygen therapeutics fall into two main streams called per fluorocarbon based and hemoglobin based.
When severe trauma occurs, a serious danger is that blood volume will be reduced to a point where the remaining red blood cells can no longer oxygenate body tissue, which can result in tissue damage or death. Artificial blood solves this by acting as a volume expander, making up for the lost quantity of blood. Because real blood has a substantial capacity for carrying oxygen, so long as volume is retained, even a dilute ratio of real blood to artificial blood can be adequate to keep a person alive. Even at half the normal level of real blood, with artificial blood a person?s oxygen levels can be at around three-quarters of the norm. At the outside limit, a person using volume expanders can get down to as little as one-seventh of their normal red blood count and still remain stable.
Artificial blood is a product made to act as a substitute for red blood cells. While true blood serves many different functions, artificial blood is designed for the sole purpose of transporting oxygen and carbon dioxide throughout the body. Depending on the type of artificial blood, it can be produced in different ways using synthetic production, chemical isolation, or recombinant biochemical technology. Development of the first blood substitutes dates back to the early 1600s, and the search for the ideal blood substitute continues. Various manufacturers have products in clinical trials; however, no truly safe and effective artificial blood product is currently marketed. It is anticipated that when an artificial blood product is available, it will have annual sales of over $7.6 billion in the United States alone.