News | Stents | December 21, 2020

New Stent Kink Resistance Testing Proposed in ASTM International Standard

The stent struts of the Biotronik Orsiro stent.

December 21, 2020 – A proposed ASTM International standard will answer the need for a standardized test method that addresses the kink resistance of endovascular stents and stent grafts when exposed to bending in a single plane. The proposed standard (WK70150) is being developed by ASTM’s committee on medical and surgical materials and devices (F04) and will provide detailed, standardized methods for testing kink resistance.

According to ASTM International member Ray Boudreaux, senior manager, Cook Research Inc., the proposed standard will help ensure that medical devices used to treat vascular diseases remain safe and functional during use.

“This proposed standard will bring utility for users by providing consistent techniques for evaluating stents and endovascular prostheses for kink resistance,” Boudreaux explained.

While concurrent influences such as torque are recognized to influence kinking properties, test methods other than single-plane bending are not addressed. This new test method is intended for endovascular stents and stent grafts but may also be used for delivery systems if deemed appropriate. 

This effort directly relates to the United Nations Sustainable Development Goals #3 on good health and well-being and #9 on industry and innovation. 

 

 

 

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