We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us
Sekisui Diagnostics UK Ltd.

Download Mobile App

Transparent Heating Pad Helps Prevent Thermotherapy Burns

By HospiMedica International staff writers
Posted on 10 Mar 2017
Print article
Image: A new study shows a transparent heating pad could prevent thermotherapy burns (Photo courtesy of ACS).
Image: A new study shows a transparent heating pad could prevent thermotherapy burns (Photo courtesy of ACS).
A new study describes an innovative transparent thermotherapy pad (TTP) that allows users to see through it to monitor skin color, thus preventing potential injuries.

Researchers at Lanzhou University and Lanzhou University of Technology fabricated the ultraflexible transparent film TTP heater by embedding conductive silver (Ag) nanowires into a thin polyvinyl alcohol (PVA) film (AgNW/PVA). They then enveloped the AgNW/PVA complex and a copper electrode in biocompatible polydimethylsiloxane in order to insulate the heating element and protect the user's skin.

A cold-pressing method was used to adjust the sheet resistance of the composite films in order to regulate the heating capabilities of the AgNW/PVA film at certain biases. The TTP film heaters have a favorable optical transmittance (93.1%), outstanding mechanical flexibility--with no visible change in sheet resistance after 10,000 bending cycles--and environmental endurance, with no significant performance degradation, even after being kept at a high temperature of 80 °C and high humidity for half a year.

According to the researchers, Joule heating can increase the temperature of the film heaters (20 Ω/sq) to 74 °C in about 20 seconds, at a bias of 5 volts. In prototype testing, the transparent TTP device heated quickly even when only 3 volts were applied, the typical voltage produced by coin-cell batteries used in watches, remotes, and other small electronics. They study was published on February 2, 2017, in ACS Applied Materials & Interfaces.

“The as-prepared AgNW/PVA films exhibited excellent mechanical flexibilities and long-term thermal stabilities, and they were very stable under different harsh conditions,” concluded lead author Wei Lan, PhD, of the LUT department of materials engineering. “The fast-heating characteristics at low voltages associated with its transparent and flexibility properties make the composite film a potential candidate in medical thermotherapy pads.”

Medical TTPs are widely used to improve blood circulation, prevent inflammation, and alleviate pain. In clinical applications, TTPs are used to treat rheumatic arthritis, cervical spondylosis, and traumatic injuries. Conventional commercial TTPs are composed of a heating component and a far-infrared paste, and often suffer from two main issues, which limit their practical applications; one is the uncontrollable temperature, and the other one is their opacity, which entails removing the pad to adjust temperatures according to the local conditions.

Gold Member
Real-Time Diagnostics Onscreen Viewer
GEMweb Live
Gold Member
POC Blood Gas Analyzer
Stat Profile Prime Plus
Silver Member
Compact 14-Day Uninterrupted Holter ECG
Cadaver Stretcher

Print article


Surgical Techniques

view channel
Image: Concept of the wirelessly actuated undulating pump and its integration into an esophageal stent (Photo courtesy of Advanced Functional Materials/ doi.org/10.1002/adfm.202405865)

Wirelessly Activated Robotic Device Aids Digestion in Patients with Compromised Organs

The transport of fluids and solids is essential in the human body, driven by a wave-like movement in the lumen known as peristalsis. However, peristalsis can be disrupted in patients who have obstructions... Read more

Health IT

view channel
Image: First ever institution-specific model provides significant performance advantage over current population-derived models (Photo courtesy of Mount Sinai)

Machine Learning Model Improves Mortality Risk Prediction for Cardiac Surgery Patients

Machine learning algorithms have been deployed to create predictive models in various medical fields, with some demonstrating improved outcomes compared to their standard-of-care counterparts.... Read more

Point of Care

view channel
Image: POCT offers cost-effective, accessible, and immediate diagnostic solutions (Photo courtesy of Flinders University)

POCT for Infectious Diseases Delivers Laboratory Equivalent Pathology Results

On-site pathology tests for infectious diseases in rural and remote locations can achieve the same level of reliability and accuracy as those conducted in hospital laboratories, a recent study suggests.... Read more
Copyright © 2000-2024 Globetech Media. All rights reserved.