Negative pressure wound treatment device, and methods
Inventors
Anderson, Paul J. • Duchon, Douglas
Assignees
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Publication Number
US-12151059-B2
Publication Date
2024-11-26
Expiration Date
Abstract
A negative pressure (i.e., vacuum or suction) wound healing device and system incorporating the device. The device of the present disclosure is smaller, lighter, portable, and overall more manageable by both the user and the medical personnel than the conventional systems. The device could be readily worn by the user.
Core Innovation
The disclosed invention is a portable negative-pressure wound therapy device and system that applies negative pressure on a wound using a pump and an input line or vacuum line extending through a housing configured to be mounted on a person. The device includes a housing with an instrument panel having a display screen, and a flexible container disposed within the housing for storing exudate obtained by the applied pressure on the wound. The system provides negative pressure to the wound while the dressing is disposed to sealably cover the wound.
A sealed dressing arrangement is provided in which the dressing material is disposed between a spray-in foam and a top layer, and the dressing material includes a plurality of holes configured to diffuse the negative pressure against the spray-in foam. In this arrangement, the negative pressure is applied to the wound sealably covered by the dressing material while maintaining a seal between the patient and the dressing material via the top layer. The spray-in foam is located within the wound below the dressing material and is exposed to negative pressure provided by the pump or device.
The system further includes wound monitoring using at least one sensor, where the sensor is configured to monitor the wound and is an infection sensor. In disclosed embodiments, the infection sensor includes a reagent configured to change from a first state to a second state, including a transition between a first color and a second color when exposed to infected exudate. In other embodiments, the system includes additional monitoring that measures wound parameters and/or wound healing rate.
Claims Coverage
The provided independent claims cover a negative-pressure wound therapy system for person-worn application that combines a sealed spray-in foam dressing with multi-hole diffusion, on-device housing instrumentation, exudate storage, and wound monitoring including an infection sensor. Across the independent claims, there are 4 core inventive feature groupings: the person-worn device housing and routing of negative pressure, the specific dressing-material sandwich that diffuses negative pressure to spray-in foam while maintaining a seal, the infection sensor wound monitoring, and multiple vacuum lines providing different suction force levels.
Person-mounted negative-pressure wound therapy housing with instrument panel and sealed pressure routing
A device including a housing configured to be mounted on a person, with an instrument panel having a display screen; an input line or vacuum line extending from the bottom surface to provide negative pressure to the wound; and a flexible container within the housing for storing exudate obtained by the applied pressure on the wound.
Sealed multi-hole dressing diffusing negative pressure against spray-in foam via a top layer
A dressing material sealably covering the wound, wherein the dressing material is disposed between a spray-in foam and a top layer and wherein the dressing material, via a plurality of holes, is configured to diffuse the negative pressure against the spray-in foam while maintaining a seal between the patient and the dressing material via the top layer, with the input line extending between the pump and the dressing material to provide negative pressure to the wound.
Infection-sensor wound monitoring within the negative-pressure wound therapy system
At least one sensor configured to monitor the wound, wherein at least one of the sensors is an infection sensor, including reagent-based state or color change when exposed to infected exudate.
Multiple vacuum lines providing negative pressure delivery at different suction force levels
A plurality of vacuum lines extending between the pump and the dressing material to provide negative pressure to the wound sealably covered by the dressing material, including configuration refinements in which first and second vacuum lines provide different suction force levels.
Taken together, the independent claims require a person-worn negative-pressure wound therapy system that delivers negative pressure through an input line or vacuum line to a sealed dressing that diffuses negative pressure to spray-in foam via a top layer and a perforated dressing portion, while storing exudate in a flexible container and monitoring the wound using an infection sensor; additional claim refinements include multiple vacuum lines with different suction-force levels and infection detection using reagent-based state or color change.
Stated Advantages
Documented Applications
No documented applications found
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