A viable disc regenerative composition has a micronized material of nucleus pulposus and a biological composition made from a mixture of mechanically selected allogeneic biologic material derived from bone marrow having non-whole cellular components including vesicular components and active and inactive components of biological activity, cell fragments, cellular excretions, cellular derivatives, and extracellular components; and wherein the mixture is compatible with biologic function and further includes non-expanded whole cells. The biological composition is predisposed to demonstrate or support elaboration of active volume or spatial geometry consistent in morphology with that of disc tissue. The viable disc regenerative composition extends regenerative resonance that compliments or mimics disc tissue complexity.

The present application relates to use of transglutaminases to treat various products, including medical devices such as tissue grafts, tissue matrices or other tissue-derived materials, and synthetics. The transglutaminases can be applied to the medical devices to provide advantages such as adhesion resistance or abrasion resistance.

The invention relates to crosslinked soft tissue grafts and methods of use thereof. The invention also relates to methods of preparing the same.

The present invention provides a method for preparing a bone protein preparation which contains for example growth factors. The present invention also provides a bone protein preparation obtained by the method and paste, putty, pellet, disc, block, granule, osteogenic device or pharmaceutical composition containing said bone protein preparation.

A method for treating tissue to form a dry tissue component that is readily rehydrated and does not require rinsing prior to implantation in the human body. The method comprises pretreatment and fixation steps that include penetrating agent molecules having a flexible backbone and at least one polar group; the steps further include cations and anions to enhance integration of penetration agent molecules into and bonding to tissue component structural molecules to provide resistance to cracking of the dry tissue component during bending.

An antibacterial medical biomaterial includes an acellular small intestinal submucosal matrix material, an antibacterial gel layer located on a surface of the acellular small intestinal submucosal matrix material, and an absorbable fiber layer located on a surface of the antibacterial gel layer. Sulfadiazine silver is on the surface of the acellular small intestinal submucosal matrix material and/or within the acellular small intestinal submucosal matrix material. An absorbable fiber layer to which the sulfadiazine silver is attached, wherein the content of sulfadiazine silver in the absorbable fiber is 1 wt. %˜2 wt. %. The medical biomaterial is usable as an external medicine for treating wound infections relayed by burns or wounds, and for reducing the incidence of infection by using a conventional central venous catheter with a sulfadiazine silver antibacterial coating, so that the medical biomaterial loaded with sulfadiazine silver also has antibacterial activity consistent with sulfadiazine silver.

The present disclosure provides fasciculated nerve grafts of customizable lengths and diameters, and methods of preparing the same. The grafts are made by digesting native extracellular matrix (ECM) around the nerve fascicles of a nerve tissue, and the epineurial sheath. One or more of the individual fascicles may then be entubulated in an entubulation material, embedded in or coated with a coating material, or both, to form a fasciculated nerve graft. The fasciculated nerve grafts are customizable and designed to bridge nerve gaps; the modularity of the fasciculated nerve graft allows for restoring continuity to nerve defects of virtually any length and allows for matching the diameter of the patient's recipient nerve.

A method for decellularization of a skin tissue according to an embodiment of the present invention comprises: a step of preparing a skin tissue to be decellularized; a peeling preparation step of treating the skin tissue with a first solution containing trypsin; and a peeling step of removing subcutaneous fat from the skin tissue after the peeling preparation step.

A method for preserving and reducing the immunogenicity of a tissue, the method including obtaining a first tissue, the first tissue being a wild type tissue or genetically modified tissue; forming a second tissue by immersing the first tissue in a first solution having a cryoprotectant concentration of at least about 75% by weight for at least one hour to kill and lyse the cells of the first tissue; forming a third tissue by removing residual cell materials of the second tissue, the residual cell materials of the second tissue being removed by subjecting the second tissue to decellularization in a bioreactor; and subjecting the third tissue to ice-free cryopreservation.

A bioprosthetic tissue having a reduced propensity to calcify in vivo, the bioprosthetic tissue. The bioprosthetic tissue comprises an aldehyde cross-linked and stressed bioprosthetic tissue comprising exposed calcium, phosphate or immunogenic binding sites that have been reacted with a calcification mitigant. The bioprosthetic tissue has a reduced propensity to calcify in vivo as compared to aldehyde cross-linked bioprosthetic tissue that has not been stressed and reacted with the calcification mitigant.