Methods and devices for preparing and implanting tissue scaffolds
First Claim
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1. A surgical method, comprising:
- rotating a scribing device about a longitudinal axis of the scribing device to form a first substantially circular mark in tissue at a defect site;
rotating a scribing device about a longitudinal axis of the 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 first and second substantially circular marks to remove a defect in the tissue;
when removing the tissue within the first and second substantially circular marks comprises removing the tissue within the first and second substantially circular marks down to an outer bone surface underlying the tissue such that a perimeter of a cavity is defined by the first and second substantially circular marks and the outer bone surface forms a bottom of the cavity.
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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.
97 Citations
20 Claims
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1. A surgical method, comprising:
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rotating a scribing device about a longitudinal axis of the scribing device to form a first substantially circular mark in tissue at a defect site; rotating a scribing device about a longitudinal axis of the 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 first and second substantially circular marks to remove a defect in the tissue; when removing the tissue within the first and second substantially circular marks comprises removing the tissue within the first and second substantially circular marks down to an outer bone surface underlying the tissue such that a perimeter of a cavity is defined by the first and second substantially circular marks and the outer bone surface forms a bottom of the cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. 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 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 that corresponds to a size and a shape of the circular cavity; 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, and wherein removing the tissue within the circular mark to form the circular cavity in the tissue comprises removing the tissue within the circular mark down to an outer bone surface underlying the tissue such that a perimeter of the cavity is defined by the circular mark and the outer bone surface forms a bottom of the cavity. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification