Advanced Wound Therapy Device
How does it work?
The WoundExpress system has a specially designed three chamber garment that attaches to the pump which has a unique, patented timing cycle that augments venous and arterial blood flow.
The garment is inflated to 60mmHg in a peristaltic action which draws the venous blood from the wound site. By inflating the garment in this special sequence, venous blood flow is increased, even in the presence of venous insufficiency, since reflux is prevented. This effect reduces the venous and interstitial pressure and increases the pressure gradient across the arterial venous pathway, distal to the garment.
This effect reduces the venous and interstitial pressure and increases the pressure gradient across the arterial-venous pathway, distal to the garment.
The result is the removal of high levels of accumulated carbon dioxide and metabolic waste products from the wound site. The arterial inflow to the leg subsequently increases and encourages the flow of nutrient and oxygen rich blood into the affected region of the wound, promoting enhanced wound healing performance.
* Morris et al, 2019 has demonstrated that applying sequential compression to the thigh alone can produce positive haemodynamic effects in the calves of patients with chronic wounds. Arterial blood flow velocity increased in the dorsalis pedis artery after periods of compression. Venous blood flow velocity increased when the lower chambers of the cuff deflated.
Morris RJ, Ridgeway BS, Woodcock JP, The use of intermittent pneumatic compression of the thigh to affect arterial and venous blood flow proximal to a chronic wound site. In press, 2019.