Methods and devices for preparing and implanting tissue scaffolds
First Claim
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1. A tissue repair kit, comprising:
- a scribing device having first and second handles and having first and second elongate shafts, each of the first and second shafts having a lumen extending therethrough, the first shaft extending from the first handle, and the second shaft extending from the second handle, the second shaft extending through the lumen of the first elongate shaft with a distal end of the second shaft being located outside of the lumen of the first shaft and being aligned with a longitudinal axis of the first elongate shaft, and a scribing element formed on a distal end of the first elongate shaft, the scribing element extending along an axis that is offset from the longitudinal axis of the first elongate shaft, and the scribing element having a distal-most scribing edge that is curved such that rotation of the scribing device about the longitudinal axis of the first elongate shaft is effective to cause the scribing edge to form a circular mark in tissue; and
a biocompatible tissue repair scaffold configured to be implanted in a defect site in tissue.
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Abstract
Methods and devices are provided for preparing and implanting tissue scaffolds. Various embodiments of scribing tools are provided that are configured to mark one or more predetermined shapes around a defect site in tissue. The shape or shapes marked in tissue can be used to cut a tissue scaffold having a shape that matches the shape or shapes marked in tissue. In one embodiment, the scribing tool used to mark a shape in tissue can also be used to cut the tissue scaffold.
98 Citations
17 Claims
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1. A tissue repair kit, comprising:
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a scribing device having first and second handles and having first and second elongate shafts, each of the first and second shafts having a lumen extending therethrough, the first shaft extending from the first handle, and the second shaft extending from the second handle, the second shaft extending through the lumen of the first elongate shaft with a distal end of the second shaft being located outside of the lumen of the first shaft and being aligned with a longitudinal axis of the first elongate shaft, and a scribing element formed on a distal end of the first elongate shaft, the scribing element extending along an axis that is offset from the longitudinal axis of the first elongate shaft, and the scribing element having a distal-most scribing edge that is curved such that rotation of the scribing device about the longitudinal axis of the first elongate shaft is effective to cause the scribing edge to form a circular mark in tissue; and a biocompatible tissue repair scaffold configured to be implanted in a defect site in tissue. - View Dependent Claims (2)
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3. A surgical method, comprising:
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advancing a surgical device into a body of a patient to position a distal scribing tip of the device at a defect site in tissue; rotating the surgical device about a central longitudinal axis of the surgical device such that the distal scribing tip rotates to form a circular mark in tissue around the defect site; removing the tissue within the circular mark by suctioning the tissue through the surgical device to form a circular cavity in the tissue; cutting a biocompatible tissue repair scaffold to have a circular shape that corresponds to the circular mark formed in the tissue; and implanting the biocompatible tissue repair scaffold in the circular cavity in the tissue; wherein rotating the surgical device comprises rotating an outer member having the distal scribing tip formed thereon relative to an inner member that engages bone underlying the tissue. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. A surgical method, comprising:
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rotating a first scribing device about a longitudinal axis of the first scribing device to form a first substantially circular mark in tissue at a defect site; removing tissue within the first substantially circular mark by suctioning the tissue through the first scribing device; rotating a second scribing device about a longitudinal axis of the second scribing device to form a second substantially circular mark in the tissue at the defect site, the second substantially circular mark partially overlapping the first substantially circular mark; and removing tissue within the second substantially circular mark by suctioning the tissue through the second scribing device to remove a defect in the tissue; wherein rotating the first scribing device comprises rotating a first outer member having a first distal scribing tip formed thereon relative to a first inner member that engages bone underlying the tissue; and wherein rotating the second scribing device comprises rotating a second outer member having a second distal scribing tip formed thereon relative to a second inner member that engages bone underlying the tissue. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification