A new machine developed at North Carolina State University makes an animal heart pump much like a live heart after it has been removed from the animal's body, allowing researchers to expedite the development of new tools and techniques for heart surgery. The machine saves researchers time and money by allowing them to test and refine their technologies in a realistic surgical environment, without the cost and time associated with animal or clinical trials.
Currently, most medical device prototypes designed for use in heart surgery are tested on live pigs, which have heart valves that are anatomically similar to human heart valves. However, these tests are both expensive and time-consuming, and involve a lengthy permission process to ensure that the use of live animals is necessary. So, researchers at NC State have developed a "dynamic heart system" a machine that pumps fluid through a pig heart so that it functions in a very realistic way. "Researchers can obtain pig hearts from a pork processing facility and use the system to test their prototypes or practice new surgical procedures," says Andrew Richards, a Ph. D. student in mechanical engineering at NC State who designed the heart machine.
The computer-controlled machine, which operates using pressurized saline solution, also allows researchers to film the interior workings of the pumping heart enabling them to ascertain exactly which surgical technologies and techniques perform best for repairing heart valves.
By using the machine, researchers can determine if concepts for new surgical tools are viable before evaluating them on live animals. They can also identify and address any functional problems with new technological tools. "There will still be a need for testing in live animal models," says Dr. Greg Buckner, who directed the project, "but this system creates an intermediate stage of testing that did not exist before. It allows researchers to do 'proof of concept' evalua
'/>"/>
| Contact: Matt Shipman matt_shipman@ncsu.edu 919-515-6386 North Carolina State University Source:Eurekalert |
Related biology news :
1. Study offers clues to beating hearing loss
2. Building disease-beating wheat
3. Heart protein regulates blood vessel maintenance
4. Chemical found in medical devices impairs heart function
5. Heart attacks: The tipping point
6. Gladstone scientists identify key factors in heart cell creation
7. Eating fatty fish once a week reduces mens risk of heart failure
8. A missing enzyme conveys major heart protection in pre-clinical work
9. Inhaling a heart attack: How air pollution can cause heart disease
10. Simple test helps predict heart attack risk
11. Why lazy Susan has a weak heart
 |
| Copyright © 2003-2012 Bio-Medicine. All rights reserved. ABOUT | CONTACT US | DISCLAIMER | PRIVACY POLICY | TERMS AND CONDITIONS |  |