摘要:
Embodiments of the present invention may include a method for improving handling characteristics of a soft tissue, such as an amnion or muscle tissue. The method may include providing the amnion tissue from a human donor. Furthermore, the method may include exposing the amnion tissue to supercritical carbon dioxide to form an exposed amnion tissue. The exposed amnion tissue may have a higher ultimate tensile strength and elastic modulus than the amnion tissue before the exposure.
摘要:
Methods of preparing biological tissue for bioprosthetic valves include providing fresh biological tissue; treating the tissue with an aqueous cellulose solution for a time sufficient to allow the fluid in the tissue to be replaced by the aqueous cellulose solution; and cross-linking the tissue, wherein the treating step is performed prior to, during, after, or both prior to and after the cross-linking step. The methods may include storing the cellulose-treated and cross-linked tissue in an aqueous solution; or drying the cellulose-treated and cross-linked tissue by a vacuum-drying or lyophilization process, and storing the dried tissue in a dry, ambient environment. The treated tissue may be in the form of a tissue component for a bioprosthetic valve, a valve assembly for a bioprosthetic valve or a fully assembled bioprosthetic valve incorporating the tissue.
摘要:
A prosthetic heart valve provided herein can include a cultured cell tissue leaflet. In some cases, a prosthetic heart valve can include a plurality of leaflets secured together and retained within the expandable tubular member. The cultured cell tissue can be obtained by culturing fibroblast cells, smooth muscle cells, or a combination thereof to form a sheet of cultured cells and chemically cross-linking the fibroblast cells while under tension. In some cases, the cultured cell tissue can be radially tensioned. In some cases, the cultured cell tissue can be bi-axially tensioned.
摘要:
본 발명은 탈세포화된 세포외 기질; 및 가교제로서 리보플라빈을 포함하는, 3차원 프린팅용 조성물을 제공한다. 본 발명에 따른 3차원 프린팅용 조성물을 사용한 프린팅 및 UVA 하에서의 가교화를 통한 적층 공정(layer-by-layer process)을 수행하여 3차원 구조체 형상을 제작한 다음, 얻어진 3차원 구조체 형상을 열적 겔화할 경우, 높은 기계적 강도를 갖는 3차원 구조체를 제조할 수 있다. 또한, 본 발명은 상기 3차원 프린팅용 조성물의 제조방법 및 상기 3차원 프린팅용 조성물을 사용한 3차원 구조체의 제조방법을 제공한다.
摘要:
Provided are compositions and methods for aiding in healing of a tissue wound in an individual. The method generally entail delivering to an individual in need thereof senescent cells such that healing of the wound is accelerated. The disclosure includes use of senescent cells and senescent tumor cells, either of which may be allogeneic or autologous to the individual. Also provided are methods for inducing senescence in cells and using the cells for wound healing, and articles of manufacture comprising senescent cells for use in wound healing.
摘要:
This document relates to tissue modification and, more particularly, to modification of biological tissue for implantation in a mammal. For example, this document relates to tissue tensioning devices and methods used during fixation of tissues for bioprosthetic heart valves.
摘要:
The present application presents a method for the production of marine-sponge type IV collagen stable and non-cytotoxic membranes, using re-solubilized marine sponge collagen precipitate. These type IV collagen membranes are to be applied in the biomedical field, tissue engineering and regenerative medicine approaches for epithelial repair, regeneration or replacement.