Custom-Fabricated NPWT Sponges with Pressure Sensing

The patent applies parameter changes by utilizing two-part silicone materials that can be injected in liquid form and then cured in situ to match the exact geometry of the wound. This allows the sponge to conform precisely to individual wound shapes while maintaining ease of manufacture through a simple injection and curing process, rather than requiring complex pre-fabricated custom molds for each wound.

The patent applies self-service by enabling the two-part silicone material to self-cure and self-form the sponge structure directly within the wound cavity. The material automatically expands and conforms to the wound geometry without requiring external molding tools or complex fabrication equipment, thereby achieving high manufacturing precision while minimizing device complexity.

The patent applies preliminary action by providing pre-packaged sterile two-part silicone materials that are prepared and sterilized before use. The sterile components are delivered in a ready-to-use state, allowing clinicians to maintain sterile technique throughout the application process without requiring complex sterilization procedures during the procedure itself, thereby ensuring both ease of operation and high reliability.

The patent applies universality by integrating multiple functions into the single sponge structure: the sponge simultaneously provides wound filling, negative pressure distribution, and pressure sensing capabilities. The two-part silicone material can incorporate pressure-sensitive elements or connect to pressure monitoring systems, allowing the same device to perform both therapeutic and monitoring functions, thereby achieving measurement precision without proportionally increasing device complexity.