Bandage that can scan your heart inspired by Japanese artform

By Mark Waghorn via SWNS

A heart scanning bandage inspired by the ancient Japanese papercraft of kirigami has been unveiled by scientists in Japan.

The smartphone-linked device uses cuts and folds like in origami, to provide greater flexibility.

The large polyester (PET) patch contours the skin to detect rhythms each time the organ beats.

Silver electrode sensors monitor electrocardiogram signals through the chest.

Project leader Professor Kuniharu Takei, of Osaka Prefecture University, said: "In terms of wearability, by applying kirigami structure in a PET film, due to PET deformation and bending, the film can be stretchable, so the film can follow skin and body movement like a bandage.

"In addition, since kirigami structure has physical holes in a PET film, skin can be easily breathed through the holes."

The technique enables relatively stiff materials, like polyester, to adapt to surfaces.

Devices that ensure a snug fit provide a solution to less noticeable wearables unhindered by background noise.

The optimal size was almost eight square inches with the electrodes just over half an inch apart.

It was able to detect enough signal from the heart to be used in a smartphone app.

Prof takei said: "The major challenge was how to realize the kirigami structure without using a precise alignment process between the silver electrodes and kirigami cutting."

It accurately and reliably relayed data across numerous people engaged in different types of everyday tasks.

They ranged from walking or working to sitting in a chair, reports the journal Applied Physics Reviews.

The team next aims to integrate more sensors to measure multiple types of data from the surface of the skin to help with early diagnosis of disease - including future medical trials.

Prof Takei added: "We understand the new mechanism or new material developments makes better impact to the field.

"However, without improving the stability, it cannot be used for practical applications, even if the sensor performance is excellent."

Origami started in the 17th Century in Japan. By the mid-1900s, it had become a popular art form worldwide.

Kirigami is a variation. The paper is cut as well as being folded - resulting in a three-dimensional design that stands away from the page.