6 results about "Wound fluid" patented technology

This utility model relates to the field of drainage and dressing technology, and particularly to an integrated device for negative pressure drainage and dressing of postoperative orthopedic wounds. The technical solution includes a sealing layer, with a negative pressure suction cup sealed and adsorbed on the upper surface of the sealing layer, and a conduit connected to the suction cup; a first sealing frame is located on the bottom surface of the sealing layer, a first breathable layer is located between the first sealing frames, and an absorbent component for absorbing wound fluid is located on the bottom surface of the first breathable layer; and a dressing layer is attached to the skin on the bottom surface of the absorbent component. This utility model eliminates the need for separate installation of the drainage device and dressing, greatly reducing operational steps, significantly improving work efficiency, reducing the workload caused by cumbersome operations, and reducing the risk of infection from repeated operations. Furthermore, it better conforms to the wound site, remains stable, and is not easily displaced, providing continuous and stable protection for wound healing and effectively promoting wound recovery.

The present invention provides an apparatus comprising a wound dressing connected to a fluid container via a pump, wherein the wound dressing is in communication with a mechanical pressure control valve, the fluid container is provided with an inlet and an outlet. Also provided are (i) flexible fluid containers comprising of at least two layers of film with an integrated vent, (ii) wound dressings and (iii) a multi-compartment wound fluid container comprising at least two internal compartments and provided with an outlet and an inlet, in which the container comprises a microporous fluid separator which divides the at least two internal compartments, wherein the microporous fluid separator permits gas flow between the compartments and prevents fluid flow to the outlet of the container. Other apparatus provided comprises a means for detecting the level of fluid within a multi-compartment wound fluid container as described. The invention also provides a system for applying a sub-atmospheric pressure to a wound dressing on a patient using devices and apparatus of the invention and methods of treatment of wounds using such apparatus, devices and systems of the invention.

Disclosed embodiments relate to apparatuses and methods for wound treatment with ultrasound. In certain embodiments, a therapeutic ultrasound wound treatment apparatus includes a wound dressing configured to be positioned over a wound to provide a substantially fluid impermeable seal over the wound and a transducer to deliver therapeutic ultrasound to tissue. The therapeutic ultrasound wound treatment apparatus may further include a wound contact layer configured to be positioned in contact with the wound, a transmission layer positioned above the wound contact layer, an absorbent layer positioned above the transmission layer and configured to absorb wound fluid, and a backing layer positioned above the absorbent layer and including an orifice. Also disclosed are multiple parameters for the therapeutic ultrasound signal.

The application discloses an enzyme-triggered self-assembly peptide hydrogel, a preparation method and application thereof, and belongs to the technical field of biomedical materials. The hydrogel comprises a peptide precursor Nap-YY(p)Y, an antibacterial compound daphnodorin and alkaline phosphatase; the peptide precursor is dephosphorylated under the action of the alkaline phosphatase, self-assembled to form a nanofiber network structure, and encapsulates the daphnodorin in the network structure. The hydrogel has a short gelation time (3-10 minutes), a moderate mechanical strength (a storage modulus G' of 130-170 Pa), a high encapsulation rate (greater than or equal to 75%), presents a biphasic release characteristic in a simulated wound liquid, and can maintain an effective therapeutic concentration for more than 7 days. The hydrogel has a significant synergistic killing effect on methicillin-resistant Staphylococcus aureus and a biofilm thereof, can effectively reduce a bacterial load of a wound and accelerate wound healing.

The invention provides a layered dressing comprising: a permeable wound contact layer for placement in contact with a wound; a gas permeable barrier layer; a biosensor sensor array configured to detect one or more markers in wound fluid; and a fluid collection layer disposed between the wound contact layer and the gas permeable barrier layer and configured to deliver wound fluid from a wound in contact with the wound contact layer to the biosensor sensor array by capillary action. In preferred embodiments, the layered dressing comprises aptamer-based electrodes for detecting TNF-a, IL-6, IL-8, TGF-b, and Staphylococcus aureus epitopes.

A combined instillation fluid delivery pump head and wound fluid collection canister apparatus for use with a negative pressure wound therapy (NPWT) unit includes a body defining a wound fluid collection canister configured to collect wound exudate and defining a pump head formed by a partially cylindrical recess in a wall of the body. The apparatus includes a flexible fluid instillation conduit extending along the pump head to be compressed by a pump rotor from the NPWT unit. The apparatus includes a first conduit fluidly coupled on one end of the first conduit to a negative pressure source on the NPWT unit. The apparatus includes a second conduit having one end of the second conduit communicating with the wound fluid collection canister. The apparatus includes a third conduit fluidly coupled to one end of the flexible fluid instillation conduit.