Electric wound care

This E-bandage could speed up wound healing

Skin has a remarkable ability to heal itself. But in some cases, wounds heal very slowly or not at all, putting a person at risk for chronic pain, infection and scarring. Now, researchers have developed a self-powered bandage that generates an electric field over an injury, dramatically reducing the healing time for skin wounds in rats.

Photo
A wound covered by an electric bandage on a rat’s skin (top left) healed faster than a wound under a control bandage (right).
Source: ACS

They report their results in ACS Nano. Chronic skin wounds include diabetic foot ulcers, venous ulcers and non-healing surgical wounds. Doctors have tried various approaches to help chronic wounds heal, including bandaging, dressing, exposure to oxygen and growth-factor therapy, but they often show limited effectiveness. As early as the 1960s, researchers observed that electrical stimulation could help skin wounds heal. However, the equipment for generating the electric field is often large and may require patient hospitalization. Weibo Cai, Xudong Wang and colleagues wanted to develop a flexible, self-powered bandage that could convert skin movements into a therapeutic electric field.

To power their electric bandage, or e-bandage, the researchers made a wearable nanogenerator by overlapping sheets of polytetrafluoroethylene (PTFE), copper foil and polyethylene terephthalate (PET). The nanogenerator converted skin movements, which occur during normal activity or even breathing, into small electrical pulses. This current flowed to two working electrodes that were placed on either side of the skin wound to produce a weak electric field. The team tested the device by placing it over wounds on rats’ backs. Wounds covered by e-bandages closed within 3 days, compared with 12 days for a control bandage with no electric field. The researchers attribute the faster wound healing to enhanced fibroblast migration, proliferation and differentiation induced by the electric field.


Source: American Chemical Society

20.12.2018

Read all latest stories

Related articles

Photo

Software solution

Using AI to match cancer patients to early phase clinical trials

Cancer informatics and digital pathology provider Inspirata announced that King’s Health Partners ECMC and Guy’s and St Thomas’ NHS Foundation Trust will pilot its Trial Navigator software as…

Photo

Lasting impact

'Long Covid' study identifies over 200 symptoms

Patients who experience long Covid have reported more than 200 symptoms across 10 organ systems, in the largest international study of ‘long-haulers’ to date, led by scientists at University…

Photo

Coronavirus and the sexes

Covid-19 clinical trials ignore gender differences

Although the coronavirus affects men and women differently, the vast majority of clinical trials do not mention sex/gender, a new analysis of 4,420 studies concludes. Ultimately, it can influence…

Related products

Sarstedt – Low DNA Binding Micro Tubes

Research Use Only (RUO)

Sarstedt – Low DNA Binding Micro Tubes

SARSTEDT AG & CO. KG
Shimadzu – CLAM-2030

Research Use Only (RUO)

Shimadzu – CLAM-2030

Shimadzu Europa GmbH
Subscribe to Newsletter