113 results about "Dermal matrix" patented technology

Flowable matrix compositions and methods of their use and manufacture are provided. Exemplary compositions may include a flowable, syringeable, putty-like form of acellular human dermal matrix. In some cases, compositions may include a moldable acellular collagen extracellular matrix. In use, the matrix compositions can be used to fill or treat skin voids, channel wounds, and other soft tissue deficiencies.

Flowable matrix compositions and methods of their use and manufacture are provided. Exemplary compositions may include a flowable, syringeable, putty-like form of acellular human dermal matrix. In some cases, compositions may include a moldable acellular collagen extracellular matrix. In use, the matrix compositions can be used to fill or treat skin voids, channel wounds, and other soft tissue deficiencies.

A stent may help to reconstruct tissue in a vessel by causing the tissue to re-epithelialize. The stent may include a biodegradable frame and a sheet that coats the frame. The sheet may contain a biological material and may flex in unison with the frame in a radial direction. When placed in a vessel, the stent may at least partially conform to at least a portion of a vessel wall. The stent may be capable of being absorbed over a period of time, such as five years, one year, or six months. The stent may flex as the vessel wall dilates and constricts. The stent may be placed in any type of vessel including an artery and mobile vessels. The biodegradable frame may be made of a poly-lactide and / or magnesium. The sheet may contain a biological material including biologic arterial graft and / or an acellular dermal matrix.

A composition consisting of a combination of peptides that regenerate the dermal matrix and a rapid acting muscle relaxant derived from the extract of the plant, Acmella oleracea. By limiting cutaneous deformation caused by the contraction of facial muscles the extract increases the efficiency of the peptides in reducing expression lines.

The invention discloses tissue engineering skin which comprises seed cells and an acellular allogenic dermal matrix, wherein the seed cells and the acellular allogenic dermal matrix form a skin appendage; the seed cells are arranged, spread flat and printed at corresponding positions on the front side of the acellular allogenic dermal matrix according to an anatomical structure of normal skin by using a 3D (Three-dimensional) printer. The invention also discloses a method for preparing the tissue engineering skin. The invention provides perfect tissue engineering skin, and the tissue engineering skin can be rapidly constructed in a short time in an operating room (the operation is finished). Meanwhile, the tissue engineering skin comprises the seed cells and dermal matrix, the seed cells are basal layer cells, have the activities of multipotential stem cells and multipotential differentiation functions and are arranged and printed in the corresponding positions according to the anatomical structure of the normal skin, the skin appendage is easily formed, the cure rate is accelerated after the operation, and functions of the skin are restored.

Soft tissue repair grafts are provided for supporting, covering, and / or retaining an implant positioned in the body of a subject. The grafts are particularly suitable for use for pre-pectoral breast reconstruction with a breast implant or tissue expander. The grafts include positional notches for more accurate positioning in a subject. The grafts also include at least one cuff element which is folded to form a reinforced folded edge for suturing the graft more securely to adjacent tissues than previously known grafts. The grafts also include a plurality of arcuate slots which form a plurality of circular patterns arranged concentrically about a focal point, thereby enabling the grafts to expand without tearing and to conform more closely to the implant and / or adjacent body tissues such as the breast pocket, than previously known grafts. Acellular dermal matrices are particularly suitable for making the soft tissue repair grafts.

The invention belongs to the field of xenogenic acellular dermal matrixes and preparation methods thereof. The preparation method of a freeze-thawing xenogenic laser microporous irradiated acellular dermal matrix is characterized by comprising the following steps: chipping a skin graft of piglet skin, and drawing the skin graft; perforating with laser; cleaning by adopting a buffer solution; performing freeze-thawing, and adding the buffer solution which is enough to immerse the skin graft for ultrasonic oscillation so as to remove destroyed dead cells and cell debris to maintain the completeness of structure and base membrane in acellular derma; cleaning with purified water, adding sulfadiazine zinc less than or equal to 0.12mg / cm<2>, and freezing at minus 20 DEG C; and sealing, disinfecting and sterilizing. The freeze-thawing xenogenic laser microporous irradiated acellular dermal matrix prepared with the method is characterized in that: the thickness is between 0.3mm and 0.4mm, the pitch is between 1.0mm and 2.0mm, and the pore diameter is between 500um and 808um.

The present invention relates to a production method for cryopreserved acellular dermal matrix and to cryopreserved acellular dermal matrix produced thereby, and more specifically it relates to a method in which a cryopreservation agent is made by adding sucrose to basic components consisting of glycerol and a basic solution and in which the resulting solution is used in the cryopreservation of skin tissue from which the cells in the epidermis and dermis have been removed, and relates to cryopreserved acellular dermal matrix produced thereby.

The invention belongs to the technical field of biomedical engineering, in particular relates to the technical field of skin wound dressing preparation, and discloses an antibacterial acellular dermal dressing with vascularization inducing capability and a preparation method thereof. The antibacterial acellular dermal matrix dressing comprises porcine acellular dermal matrix, poly dopamine, vascular endothelial growth factor (VEGF) composition and antibacterial peptide LL37. The antibacterial acellular dermal dressing with the vascularization inducing capability has the advantages of low immunogenicity, good biocompatibility and antibacterial ability, and has obvious wound healing and vascularization promoting effect.

The invention relates to the field of gelatin-based biomedical materials, in particular to a preparation method and application of a bionic electronic skin medical stent with a self-repairing function. The method is characterized in that gelatin extracted from an acellular fetal calfskin dermal matrix with good biological safety is used as a raw material; then, conducting polymer poly (3, 4-ethylenedioxythiophene) with good biocompatibility is used; compounding a polystyrene sulfonate (PEDOT: PSS) solution with self-made acidified carbon nanotubes (H-MWCNTs); the hydrogel stent with a multifunctional three-dimensional network space structure is obtained through crosslinking of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (EDC), and the hydrogel is good in biocompatibility and high in mechanical strength, has both self-repairing performance and tissue regeneration inducing repairing performance and can be widely applied to skin wound repairing treatment.

UVB radiation of about 300-310 nm wavelength and UVA radiation of about 380-390 nm wavelength, each of which exists in solar light, induces MMPs (matrix metalloproteinases) in human skin that degrade the collagen of the dermal matrix. This degradation contributes to photoaging of human skin, which can be prevented by blocking these wavelengths of solar radiation. In contrast, diseases that result in the overproduction of collagen can be treated by exposing the affected with to radiation having wavelengths in those regions, for these wavelengths not only induce MMPs but also inhibit collagen biosynthesis. For lighter skinned people so affected, the UVA wavelengths are preferred because of the reduced amount of erythema, whereas dark skinned people can be treated with the UVB radiation because they generally do not suffer from erythema.