Study says medical urethanes may suffer hydrolysis

Published: December 10, 2012 6:00 am ET

Related to this story

Topics Medical, Materials, Suppliers

WASHINGTON (Dec. 10, 11:15 a.m. ET) — Researchers have discovered what they call a “previously unrecognized” way that degradation can occur in silicone-urethane plastics, often used in medical devices.

The study, published in the American Chemistry Society’s journal Macromolecules, could have implications for device manufacturers considering use of these plastics in the design of some implantable devices, including cardiac defibrillation leads, ACS said in a Dec. 5 statement.

The researchers said that some implanted biomedical devices, such as pacemakers and defibrillators, have parts made of a plastic consisting of polyurethane and silicone. While these materials have been extensively studied for failure due to interaction with oxygen, no published study has looked at interaction with water as a potential failure mechanism in this class of materials, ACS reported.

In a cardiac lead application, these materials may be used as a coating on the electrical wires that carry electric current from the battery in the device to the heart. Surgeons implant pacemakers in 600,000 people worldwide and defibrillators in 100,000 people in the United States each year, ACS said. Since these implants must function reliably for years, the scientists wanted to determine whether the plastic material was suitable for long-term implants.

ACS reported that laboratory tests, including accelerated ageing of the materials under conditions that simulated the inside of the human body, found indications that the material begins to break down within 3-6 years.

“By making the conclusions of this novel, scientific research public in a respected peer-reviewed journal, device manufacturers may now consider these important findings in their device designs,” commented Kimberley Chaffin, lead author of the report.


Comments

Study says medical urethanes may suffer hydrolysis

Published: December 10, 2012 6:00 am ET

Post Your Comments


Back to story


More stories

Image

Acquisition expands Rieke Packaging's stake in Asia

July 28, 2014 4:39 pm ET

Diversified rigid packaging components producer Rieke Packaging Systems now has a bigger footprint in Asia.    More

Image

Two medical device makers add specialty products through acquisitions

July 28, 2014 3:02 pm ET

The medical merger mania continues this summer as two more medical device manufacturers are swallowed up by bigger competitors.    More

Image

Deal combines US packaging thermoformers

July 28, 2014 12:42 pm ET

Thermoformed medical packager Nelipak Corp. is expanding its North American holdings and access to the U.S. health care market with the purchase of...    More

Image

Formosa to be compensated for Vietnam riot

July 28, 2014 1:44 pm ET

Taiwan's Formosa Plastics Group will receive $2.39 million from the Vietnamese government and insurance companies for damages suffered during the...    More

Image

Material Insights: Bioplastics firms win government funding

July 28, 2014 12:51 pm ET

Also this week, a study takes a look plastic at the ocean surface and comes away with a surprise finding, and new materials capacity announced.    More

Market Reports

Plastics Recyclers Data Report & Directory

This exclusive MS Excel database contains all the companies from Plastics News' ranking of top North American Recyclers and Brokers by reprocessed volume and also includes a directory with materials processes, services offered and company contact information. Data is based on primary research by PN editorial staff.

Learn more

2014 Injection Molding Industry Report

GROWTH, OPPORTUNITY IN SIGHT FOR INJECTION MOLDERS IN 2014

In the wake of the economic turbulence earlier in this decade, molders today find themselves in much better shape. Molders are gaining a competitive advantage by investing in people, equipment and seeking inroads into new markets on a global scale.

Growth in the injection molding industry is going to be driven by low financing costs and a continued move to reshore some business.

Learn more

Shale Gas Market - Analysis of North American Region

This report highlights the impact of shale-based natural gas on the North American plastics market and features an in-depth analysis of production trends in the United States during 2013 and a forecast for 2014 and beyond.

Learn more

Upcoming Plastics News Events

September 10, 2014 - September 12, 2014Plastics Caps & Closures 2014

January 14, 2015 - January 14, 2015Plastics in Automotive

February 4, 2015 - February 6, 2015Plastics News Executive Forum 2015

More Events