The Negative Pressure Drainage Sponge is a specialized polymer medical material used exclusively for Negative Pressure Wound Therapy (NPWT). It is typically made of polyurethane (PU) or polyvinyl alcohol (PVA), offering good biocompatibility and a porous structure. Its core function is to fill the wound cavity, uniformly transmit negative pressure, and drain exudate, necrotic tissue, and inflammatory substances through interconnected pores, thereby optimizing the wound healing environment.
In clinical applications, the Negative Pressure Drainage Sponge is suitable for various complex wounds, such as chronic ulcers (diabetic foot ulcers, pressure ulcers), acute trauma (open fractures with soft tissue defects), and post-operative infected wounds. Its working principle is based on a closed negative pressure suction system: the sponge is trimmed to fit the wound bed, covered with an occlusive film, and connected to a negative pressure pump. Under controlled negative pressure, it promotes local blood circulation, reduces edema, and stimulates granulation tissue growth. Compared to traditional dressings, this technology can significantly reduce dressing change frequency, lower infection risk, and accelerate the healing process.
However, not all wounds are suitable for Negative Pressure Drainage Sponges. Caution is required and careful assessment is necessary for wounds such as malignant tumor wounds, untreated osteomyelitis, or those with exposed major blood vessels or nerves. Furthermore, its application must be performed by trained medical professionals, and the sponge requires regular replacement to avoid potential complications. Overall, as an essential tool in modern wound management, the Negative Pressure Drainage Sponge provides an effective solution for treating complex wounds through its scientific design and efficient drainage mechanism.
