Study says medical urethanes may suffer hydrolysis

Published: December 10, 2012 6:00 am ET

Related to this story

Topics Materials, Suppliers, Medical

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

Huntsman closing four pigment plants

March 5, 2015 3:36 pm ET

Huntsman Corp. is closing four plants — three in the U.S. and one in Germany — that make pigments for plastics and other markets.    More

Image

VisiPak adds to customer mix, product offerings with Tulox acquisition

March 5, 2015 2:19 pm ET

VisiPak has acquired Tulox Plastics Corp., a maker of clear plastic packaging.    More

Image

ResTech companies renamed Plastics Molding Manufacturing

March 5, 2015 3:54 pm ET

Plastics Molding Manufacturing Inc. is the new name for the ResTech Plastic Molding LLC family of companies.    More

Image

Plastics News Now: Plastic raises the roof

March 5, 2015 8:44 am ET

Toyota's hydrogen fuel cell vehicle gets an assist from carbon fiber, slate roof shingles get the plastic treatment and West Coast port delays had...    More

Image

Auto supplier Motus adds more production as it buys Leon Interiors

March 5, 2015 10:52 am ET

Motus Integrated Technologies, a Tier 1 automotive interiors supplier, is getting bigger, adding the assets of Tier 2 supplier Leon Interiors Inc.    More

Market Reports

Flexible Packaging Trends in North America

North America represents about 30 percent of the global consumption of flexible packaging. Annual growth in this region is forecast at 4 percent during the next 5 years.

For more insight on growth opportunities, drivers of growth and the outlook for 2015, download this report.

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

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

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

More Events