Tissue extraction and collection device

Abstract

The present invention relates to methods and device for extracting and collecting tissue, which can be used for example in tissue engineering and grafting applications. In one embodiment, a device can include an outer tube. A rotatable shaft can be disposed within the outer tube and can have a tissue harvesting tip formed on its distal end, the tissue harvesting tip being effective to excise tissue upon rotation thereof. A tissue collection device can be included to receive and collected excised tissue, and the tissue collection device can indicate the amount of tissue collected therein. For example, the tissue collection device can include a straining element which collects excised tissue and an indicator by which to assess the amount of collected tissue. In some embodiments, the tissue collection device can translate to indicate the amount of collected tissue. In many cases, devices disclosed herein can include driving mechanisms that are adapted to drive a tissue harvesting tip such that the tip excises soft tissue, but stops when contacting bone (or soon after contacting bone). In some embodiments, the tissue harvesting tip can be effective to excise viable tissue samples, such that the samples can exhibit desirable proportions of viable cells. Further, in some embodiments, the tissue harvesting tips can excise a tissue sample with tissue particles falling in certain size ranges.

Description

[0001] This application is a continuation-in-part of U.S. Application No. 10 / 661,460, filed September 11, 2003, entitled "Tissue Extraction and Maceration Device," now published as U.S. Patent Publication No. 2005 / 0059905, and is hereby designated as Its teachings are hereby incorporated by reference in their entirety. technical field [0002] The present application relates generally to methods and devices for extracting and collecting tissue. Background technique [0003] Tissue grafting is frequently used to treat dehiscence, tissue damage, or other tissue defects resulting from trauma, infection, or chronic deterioration, joint repair surgery, and oral / maxillofacial surgery. Bone grafting can also be used to treat broken bones, cracks, or other bone defects. Transplantation provides the framework within which host tissue can regenerate and heal. Once implanted, living cells are incorporated into the graft's porous microstructure to support new tissue as it grows to rep...

AI Technical Summary

Problems solved by technology

[0006] Although existing procedures are proven effective, they can be time consuming, expensive and involve multiple surgical procedures

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