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

Resin market has consolidated as it matured

November 28, 2014 6:00 am ET

The classic quantity vs. quality debate has played out in the ranks of North American resin makers in the last 25 years.    More

Image

Sipa buys Automa's PET bottle machinery business

November 28, 2014 10:02 am ET

Sipa SpA has acquired the injection-stretch-blow molding (ISBM) equipment business of Automa SpA. No transaction price was disclosed in the...    More

Image

'Evolution, not revolution' on the horizon for A. Schulman

November 28, 2014 6:00 am ET

Bernard Rzepka's schedule for his first year as CEO of compounding leader A. Schulman Inc. does not include reinventing the wheel.    More

Image

Penn Color plans $10 million expansion

November 28, 2014 6:00 am ET

Penn Color Inc. will break ground late next year on a 100,000-square-foot expansion of its manufacturing site in Hatfield, Pa.    More

New liquid colorants for PET packaging released

November 28, 2014 6:00 am ET

PolyOne Corp. has launched a line of new liquid colorants for PET packaging in personal care and cosmetic products.    More

Market Reports

Plastics Caps & Closures Market Report

The annual recap of top trends and future outlook for the plastics caps & closures market features interviews with industry thought leaders and Bill Wood’s economic forecast of trends in growing end markets. You will also gain insight on trends in caps design, materials, machinery, molds & tooling and reviews of mergers & acquisitions.

Learn more

Plastics Recycling Trends in North America

This report is a review and analysis of the North American Plastics Recycling Industry, including key trends and statistics based on 2013 performance. We examine market environment factors, regulatory issues, industry challenges, key drivers and emerging trends in post-consumer and post-industrial recycling.

Learn more

Plastics in Mexico - State of the Industry Report

This report analyzes the $20 billion plastics industry in Mexico including sales of machinery & equipment, resins and finished products.

Our analysts provide insight on business trends, foreign investment, top end markets and plastics processing activity. The report also provides important data on exports, production, employment and value of plastics products manufactured.

Learn more

Upcoming Plastics News Events

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

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

June 2, 2015 - June 3, 2015Plastics Financial Summit - Chicago 2015

September 16, 2015 - September 18, 2015Plastics Caps & Closures - September 2015

October 27, 2015 - October 29, 2015Plastics Financial Summit - New York - 2015

More Events