Featured Research

from universities, journals, and other organizations

Artificial Heart Chamber And Artificial Blood Vessels Aid Cardiovascular Surgeons

Date:
August 28, 1998
Source:
American Chemical Society
Summary:
A research team at Pennsylvania State University is studying the performance and stability of an artificial heart chamber, or artificial blood sac, and its ability to help the heart circulate blood. The devices, which are biocompatible and thus not rejected by the body, could improve and extend the lives of the millions of Americans who have diseased hearts.

BOSTON, Aug. 27--A research team at Pennsylvania State University is studying the performance and stability of an artificial heart chamber, or artificial blood sac, and its ability to help the heart circulate blood. The devices, which are biocompatible and thus not rejected by the body, could improve and extend the lives of the millions of Americans who have diseased hearts, said James Runt, Ph.D., a faculty member in the University's Materials Science and Engineering Department. He described his work here today (Aug. 27) at a national meeting of the American Chemical Society, the world's largest scientific society. The artificial devices are made of a polymer material called polyurethaneurea [polyYURehTHANEyurE-ah].

The blood sacs could also augment the functions of total artificial hearts, which continue to be studied at research centers here and abroad, said Dr. Runt. His research team is presently evaluating blood sacs from total artificial hearts that had been implanted in cows for over four months. The ultimate goal is to produce blood sacs that will help human or artificial hearts to circulate blood for five years or more, Dr. Runt said. His work is conducted in conjunction with Penn State's Hershey Medical Center Section on Artificial Organs.

In another related paper at the American Chemical Society meeting, Dr. Michael Szycher, Ph.D., of CardioTech International, Inc., Woburn, Mass., reported that blood vessels made of an elastic, polyurethane-based material have carried blood to the hearts of test animals for over two years.

The polymer vessels are designed to be used in heart bypass operations, which are performed more than 500,000 times a year. The artificial vessels are designed to substitute for the saphenous vein, the major vein in the leg that is most often used to replace clogged coronary arteries. Since most saphenous veins fail after about 12 years, and because removing the vein from the leg can interfere with circulation from the leg to the heart, scientists have been looking for artificial replacements for nearly two decades, he said.

Dr. Szycher said human trials are underway in Europe in which the polymer vessels are being used to cleanse the blood of kidney patients during renal dialysis. They also have potential uses as replacements for hardened arteries in the legs of diabetes patients who have lost circulation to the lower part of their legs, he said.


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Cite This Page:

American Chemical Society. "Artificial Heart Chamber And Artificial Blood Vessels Aid Cardiovascular Surgeons." ScienceDaily. ScienceDaily, 28 August 1998. <www.sciencedaily.com/releases/1998/08/980828073219.htm>.
American Chemical Society. (1998, August 28). Artificial Heart Chamber And Artificial Blood Vessels Aid Cardiovascular Surgeons. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/1998/08/980828073219.htm
American Chemical Society. "Artificial Heart Chamber And Artificial Blood Vessels Aid Cardiovascular Surgeons." ScienceDaily. www.sciencedaily.com/releases/1998/08/980828073219.htm (accessed July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

House Republicans Vote to Sue Obama Over Healthcare Law

House Republicans Vote to Sue Obama Over Healthcare Law

Reuters - US Online Video (July 31, 2014) The Republican-led House of Representatives votes to sue President Obama, accusing him of overstepping his executive authority in making changes to the Affordable Care Act. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Despite Health Questions, E-Cigs Are Beneficial: Study

Despite Health Questions, E-Cigs Are Beneficial: Study

Newsy (July 31, 2014) Citing 81 previous studies, new research out of London suggests the benefits of smoking e-cigarettes instead of regular ones outweighs the risks. Video provided by Newsy
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins