Abstract:
A chitosan biomaterial is frozen in aqueous solution to form a frozen chitosan structure from which water is removed by a prescribed freeze-drying process to form a sponge-like chitosan structure having a thickness and a density. The sponge-like chitosan structure is compressed by application of heat and pressure to reduce the thickness and increase the density of the sponge-like chitosan structure to form a densified chitosan structure. The densified chitosan structure is further preconditioned by heating the densified chitopsan structure according to prescribed conditions to form a wound dressing. The wound dressing possesses an adhesion strength and resistance to dissolution in high blood flow bleeding situations.
Abstract:
Supple tissue dressing assemblies are formed from hydrophilic polymer sponge structures, such as chitosan. The supple tissue dressing assemblies are characterized by suppleness or multi-dimensional flexibility. The assemblies can be flexed, bent, folded, twisted, and even rolled upon itself before and during use, without creasing, cracking, fracturing, otherwise compromising the integrity and mechanical and/or therapeutic characteristics of the assemblies.
Abstract:
A chitosan biomaterial is frozen in aqueous solution to form a frozen chitosan structure from which water is removed by a prescribed freeze-drying process to form a sponge-like chitosan structure having a thickness and a density. The sponge-like chitosan structure is compressed by application of heat and pressure to reduce the thickness and increase the density of the sponge-like chitosan structure to form a densified chitosan structure. The densified chitosan structure is further preconditioned by heating the densified chitosan structure according to prescribed conditions to form a wound dressing. The wound dressing possesses an adhesion strength and resistance to dissolution in high blood flow bleeding situations.
Abstract:
Supple tissue dressing assemblies are formed from hydrophilic polymer sponge structures, such as chitosan. The supple tissue dressing assemblies are characterized by suppleness or multi-dimensional flexibility. The assemblies can be flexed, bent, folded, twisted, and even rolled upon itself before and during use, without creasing, cracking, fracturing, otherwise compromising the integrity and mechanical and/or therapeutic characteristics of the assemblies.
Abstract:
Improved hemostatic agents take the form of granules or particles that can be used to stanch, seal, or stabilize a site of hemorrhage, including a noncompressible hemorrhage.
Abstract:
A hat headliner with temperature control members that is configured to provide a temperature dissimilar to that of its environment at locations along a lower edge of a hat. The present invention includes a body that is either permanently or releasably secured into the head cavity of a hat. The body of the present invention includes a perimeter band member wherein the perimeter band member has formed therein a plurality of receptacles. The plurality of receptacles have an interior volume wherein the interior volume is configured to receive and store temperature members. The temperature members include a housing from a malleable material having a temperature controlling gel therein. The receptacles have a first side and a second side wherein the first side of the receptacle is manufactured from a thermally conductive material and is adjacent a wearer's head.
Abstract:
Wound dressing assemblies and methods of producing the wound dressing assemblies. The wound dressing assemblies various comprise individual layers of nanomaterials that have been formed according to an electrospinning process.Each of the layers can have different characteristics and qualities. The invention also provides guidance in selecting materials to form a wound dressing assembly, as well as possible adaptations to the electrospinning process to provide different characteristics for particular materials.
Abstract:
Tissue dressing assemblies are formed from hydrophilic polymer sponge structures. The tissue dressing assemblies can be used, e.g., (i) stanch, seal, or stabilize a site of tissue injury, tissue trauma, or tissue access; or (ii) form an anti-microbial barrier; or (iii) form an antiviral patch; or (iv) intervene in a bleeding disorder; or (v) release a therapeutic agent; or (vi) treat a mucosal surface; or (vii) combinations thereof. The tissue dressing structures are made compliant, e.g., by (i) micro-fracturing of a substantial portion of the sponge structure by mechanical manipulation prior to use, or (ii) a surface relief pattern formed on a substantial portion of the sponge structure prior to use, or (iii) a pattern of fluid inlet channels formed in a substantial portion of the sponge structure prior to use, or (iv) the impregnation of a sheet material within the sponge structure.