| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and an apparatus for providing a tissue graft using tissue from a donor site.SOLUTION: For example, a hollow tube 510 can be inserted into tissue at a donor site 100, where a distal end of the hollow tube 510 can have two or more points or extensions 520 to facilitate separation of a micrograft from the surrounding tissue. An apparatus 500 is provided that includes a plurality of such tubes 510 for simultaneous harvesting of a plurality of micrografts. The harvested micrografts can have a small dimension, e.g., less than about 1 mm, or less than about 0.3 mm, which promotes healing of the donor site 100 and/or viability of the harvested tissue. The micrografts are approximately cylindrical or strip-shaped, and are placed in a biocompatible matrix to form a graft or directly into tissue at the recipient site. Such exemplary micrografts can be obtained from skin or other types of tissue, e.g., various internal organs. |
