Our product, the Portable Negative Pressure Wound Therapy Device, has successfully carried out a case of treating the infection of the arteriovenous fistula for renal dialysis at the left elbow. The patient has chronic kidney disease. During the process of renal dialysis, it led to the infection of the arteriovenous fistula. Additionally, the patient has underlying diseases such as grade 3 hypertension, type 2 diabetes, and hyperuricemia. The patient's wound is difficult to repair, and there is a risk of causing severe infection and gangrene. 

Wound Negative Pressure Wound Therapy (NPWT) is an advanced treatment method that accelerates healing by applying continuous or intermittent negative pressure to the wound. It can remove exudate, reduce the risk of infection, improve local microcirculation, promote the growth of granulation tissue, and reduce tissue edema, etc. After a detailed examination of the patient, a treatment plan of pocket negative pressure + wet dressing change is implemented: 

The Negative Pressure Wound Therapy (NPWT) technology has been applied in clinical practice since the 1980s and has gradually become a routine method for treating tissue defects and chronic wounds. China introduced this technology in 1994 and named it negative pressure wound drainage. Clinical evidence over the past nearly two decades has shown that NPWT has a good healing effect on the management of various acute and chronic wounds.

Product Features of Shuangwei Biotechnology Portable Negative Pressure Wound Therapy Device：
1.Convenient and Portable Use  
Patients do not need to rely on central negative pressure equipment in hospitals. The device can be carried around, expanding the range of activities and improving the quality of life. Clinical trials have shown that this product is particularly suitable for home use by patients with limited access to transportation.
2.Multiple Working Modes  
During clinical treatment, different wounds have varying requirements for pressure mode selection. In response to this characteristic, we have set up different working modes for clinical choice, which is conducive to wound healing.
3.Comprehensive Alarm Functions  
To ensure the safety and effectiveness of the device during use, R&D engineers have designed a more secure voice alarm system by starting from real-world usage scenarios and repeatedly simulating possible abnormal conditions. It features four types of voice alarm functions, facilitating safe operation for users in various clinical situations.
4.Excellent Performance  
Equipped with a built-in 2000mAh lithium battery, the device features low power consumption, enabling approximately 10-12 hours of operation when fully charged. It can generate a maximum negative pressure of 300mmHg and has a maximum fluid storage capacity of 80ml, making it suitable for draining various acute wounds, chronic non-healing wounds, and surgical wounds with heavy exudation.