VSD(vacuum sealing drainage ), refers to using polyethylene alcohol-hydrated seaweed salt foam dressing containing drainage tubes to cover or fill wounds with skin and soft tissue defects, and then sealing them with biological semipermeable membranes to make them It becomes a closed space, and finally the drainage tube is connected to the negative pressure source, which is a new treatment method that promotes wound healing through controllable negative pressure.

MVA is manual negative pressure abortion, which specifically refers to the method of terminating early pregnancy abortion using a disposable plastic manual negative pressure aspirator and a double-window suction tube. This method is conducive to improving the safety of artificial abortion and reducing the pain of women during the abortion operation. Since this technology does not require routine dilation of the cervix during abortion surgery and the routine use of curettes to scratch the uterine cavity after aspiration, it not only reduces abortion injuries but also reduces the operator's operational risks.

Oximeter, as an important part of modern medical monitoring equipment, has been widely used in clinical medical treatment and home health monitoring. Through innovative technical means, the oximeter can non-invasively monitor blood oxygen saturation (SpO2), pulse rate and perfusion index (PI) at any time, providing extremely important data support for medical diagnosis and health management.

Blood pressure is one of the important indicators of human health. Blood pressure measurement is the main means to understand blood pressure levels, diagnose hypertension, guide treatment, evaluate antihypertensive efficacy, and observe changes in disease conditions.

Insulin therapy is one of the important means to achieve good blood sugar control. Insulin injection is not as simple as a needle. The lack of standardized training may cause some patients to use the wrong method for insulin injection for a long time, which will have a negative impact on the patient's blood sugar control and may also lead to adverse reactions at the injection site.