APPLICATION: PC/ABS and TPU Offer Biocompatibility, Durability to Mobile Patient Monitor

Continuous patient-monitoring systems require materials that are durable enough to protect interior components but will not irritate the patient’s skin.

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Vios Medical’s mobile monitoring device mixes that biocompatibility and toughness in several injection molded components utilizing Bayblend PC/ABS compound and Texin thermoplastic polyurethane (TPU) supplied by Covestro LLC (U.S. headquarters, Pittsburgh, covestro.com).

The Vios Monitoring System connects patient-worn sensors, including a chest sensor and pulse oximeter, with a bedside and central station monitor to analyze, display and centralize patient data in near real-time. The first generation of the Vios Monitoring System has received Food and Drug Administration (FDA) 510(k) clearance but is not currently available in the United States.

A white Bayblend M301 FR resin is used for the Vios’ housing, with a clear Texin RxT70A TPU featured on the hinge, feet, button and seal. Amit Patel, co-founder and CEO of Vios Medical, stated in a release that the materials were chosen on the basis of their biocompatibility and performance, as well as for Covestro’s technical support and color matching.

The biocompatible Bayblend used is custom colored and offers good impact resistance and surface appearance, while also meeting UL requirements. The Texin TPU, meanwhile, gives the device a water-tight seal while being flexible in the hinge, button and feet of the device.

Covestro notes that health care professionals increasingly monitor patient vital signs with wireless technology, using a device like the Vios to automate patient oversight and remotely detect problems. Covestro introduced the application at MD&M West (Feb. 9-11; Anaheim, Calif.).

The global patient monitoring device market is forecast to reach $24.7 billion by 2020, growing at an annual average rate or 5.6%, according to a report from Markets and Markets. North America accounted for the highest share of the segment in 2015, but the report calls Asia Pacific “the most promising” region for the devices going forward.