WOCA Pump

Negative Pressure Wound Therapy (NPWT) is an effective treatment that aids the healing of chronic wounds. However, high treatment cost of commercial systems has limited its use and availability in developing countries. Here, we introduce the Wound Care (WOCA) Pump, a portable and affordable vacuum pump system design for use in low-resourced settings. It features a simple interface for smooth operation and monitoring. It also allows treatment pressure adjustments from 70 to 125 mmHg that is automatically controlled by the system. A rechargeable battery supplies power throughout a treatment cycle and enables portability of the device. 3D printed custom parts and widely available components are used to guarantee future repair and maintenance of the device. A standard laboratory bottle, which can be cleaned and reused, is used as a canister. The only consumable in the system is the bacterial filter that needs to be periodically replaced. Future modification, such as matching of different dressing sets, would be easily achievable with the design files shared online. Testing results shows minimal air leakage, optimal pressure control, and functional safety mechanisms for the system. Hereby, we hope this detailed documentation could contribute a small step in narrowing existing global healthcare gaps.