Development of portable device for wound perfusion and negative-pressure therapy / 医疗卫生装备

ABSTRACT

Objective To develop a portable device for wound perfusion and negative-pressure therapy to solve the problem of the existing one.Methods The device used a unified waste liquid tank/liquid reservoir as the infrastructure,and had its reservoir and waste liquid bags made of flexible materials.Dynamic isolation between the reservoir bag and waste liquid bag was realized by a separator.Wound perfusion was implemented by the gravity of the waste liquid and the elastic force of the spring, and negative-pressure therapy was carried out by the elastic force and vacuum pump. The SCM regulated the switching of the electromagnetic valve according to the information from the flow meter and pressure sensor so as to perform quantitative wound perfusion, stable negative-pressure therapy and switching between the functions of perfusion and negative-pressure therapy.Results The device volume was decreased by regulating dynamically the sizes of reservoir and waste liquid bags,and the power consumption was also reduced by using liquid gravity and spring force. Conclusion The wound perfusion and negative-pressure therapy device gains advantage over the existing one in portability, and thus is of significance for promoting the technology of wound perfusion and negative-pressure therapy.