Tag Archives: vascular

Wireless blood flow sensor wraps around arteries, self-resorbs

biosensor
Using exclusively bio-compatible and bio-degradable materials, researchers from the University of Stanford have devised a capacitive-based artery blood-flow sensor which can be read out wirelessly once implanted, and which does not require removal as it self-resorbs after a few months of operation.

The thin flexible device described in a paper titled “Biodegradable and flexible arterial-pulse sensor for the wireless monitoring of blood flow” published in Nature Biomedical Engineering was designed to locally monitor blood flow after complex reconstructive surgeries involving “anastomosis”, the suturing of blood vessels, such as would be the case in cardiovascular, vascular and transplantation operations.

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Flexible sensor maps blood-oxygen levels across the body

In the case of a medical shock, low blood perfusion, or organ injury, the authors highlight, the pulsatile arterial blood signal of becomes too weak to be used for pulse oximetry. The researchers proved their setup on a forearm by occluding blood supply to the arm using a pressure cuff (as those used for measuring arterial tension).