Disclosed are photo-responsive pressure sensitive adhesives, wound dressings that contain the photo-responsive pressure sensitive adhesives, and methods to remove the wound dressing. The photo-responsive pressure sensitive adhesive comprises a viscoelastic polymeric matrix. The viscoelastic polymeric matrix comprises a polymer that includes at least a first polymeric segment and at least a second polymeric segment that are each covalently linked together through a photo-cleavable moiety. The photo-cleavable moiety is capable of photolytic cleavage of the covalent bonds formed between the moiety and the first and/or second polymeric segments, respectively, in response to electromagnetic radiation.

Provided herein is a system and method for coupling a wearable therapy system to a dressing and detaching the wearable therapy system from the dressing. One aspect provides a system including a drape with a switchable adhesive layer and a therapy system adhered to the drape via the switchable adhesive layer. The therapy system includes one or more radiation sources that can emit radiation wavelengths (e.g., light or electromagnetic waves) to impinge upon the adhesive and deactivate the adhesive when it is desired to remove the therapy system from the drape.

The present invention is related to an pasting structure that comprises a back-material layer which is formed by attaching the film layer and the porous supporting layer to each other; and a gel layer, one side of the gel layer is bonded to the porous supporting layer and part of the gel layer penetrate pores; wherein the back-material layer and the gel layer closely adhered to each other to form a transparent pasting structure. The pasting structure of the present invention is used as wound dressing which easily observes the wound change and healing status at any time. In the meantime, that provides higher moisture permeability and comfort.

The wound drain has an integral pliable base member with an adhesive backing that affixes the drain to the patient's skin and holds it in place so that the drain line can be fitted into the wound cavity. The base member is shaped and configured to affix to the skin adjacent the wound cavity and has a domed top, tapered sides or wings and a substantially flat bottom surface. The pliable base member stretches and contorts so that it lies flat against the patient's skin and conforms around and into body creases and folds. The bottom of the base member is coated with an adhesive, which is covered by a removable non-stick backing.

Dressings, systems, and methods for treating a tissue site on a patient involve allowing liquids from the tissue site or a priming fluid to evaporate and exit the dressing through a liquid-impermeable, vapor-permeable membrane. The dressing is able to process more liquids than would otherwise be possible without evaporation and potentially to create reduced pressure. Other dressings, systems, and methods are disclosed.

The present invention relates to wound dressings for use in cases of a patient suffering a penetrating chest trauma. The wound dressing comprises a base layer having a lower surface facing the wound and an upper surface facing away from the wound, and an aperture therethrough for locating over the wound, and a top layer extending over the aperture and at least a part of the upper surface. The base layer is connected to the top layer such that the wound dressing can transition from an open configuration in which the aperture and an area external to the wound dressing are in fluid communication via at least one opening at a perimeter between the base layer and the top layer, to a closed configuration in which the top layer forms a seal over the aperture.

A negative pressure wound closure system and methods for using such a system are described. Preferred embodiments of the invention facilitate closure of the wound by preferentially contracting to exert force on the tissue. Some embodiments may utilize a clamping structure with removable sections.

Embodiments disclosed herein are directed to negative pressure treatment systems and wound dressing systems, apparatuses, and methods that may be used for the treatment of wounds. In particular, some embodiments are directed to improved wound dressings comprising an obscuring layer that may hide fluid contained therein. Some embodiments may further comprise one or more viewing windows disposed therethrough so as to enable monitoring or examination of fluids contained therein.

A negative pressure wound closure system and methods for using such a system are described. Preferred embodiments of the invention facilitate closure of the wound by preferentially contracting to exert force on the tissue. Some embodiments may utilize a clamping structure with removable sections.

A dressing including a top film, an adhesive layer positioned adjacent the top film closer to a user's skin when the bandage is in use, a hydrogel layer including a support layer, below the adhesive layer closer to the user's skin when the bandage is in use, and a lower perforated layer positioned under the hydrogel layer for adhering the bandage to a user's skin. All of the layers may be transparent or at least partially translucent to allow a user to view the user's skin through the bandage. The hydrogel layer provides pressure distribution to reduce stress on the user's skin and reduce the likelihood of pressure ulcers.