Methods and devices for delivering and affixing tissue scaffolds
First Claim
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1. A method for delivering a tissue scaffold, comprising:
- advancing a proximal end of a delivery shaft into a distal end of a delivery cannula to position a tissue scaffold disposed on a distal end of the delivery shaft within the distal end of the delivery cannula, the delivery cannula causing the tissue scaffold to fold around at least one prong on the distal end of the delivery shaft as the tissue scaffold is advanced into the distal end of the delivery cannula;
advancing the cannula into a body of a patient with the tissue scaffold and delivery shaft disposed therein, and positioning the at least one prong on the delivery shaft against bone to position the tissue scaffold; and
removing the cannula leaving the delivery shaft and tissue scaffold extending into a body of a patient, and advancing a delivery guide over the delivery shaft to cause a distal end of the delivery guide to engage the tissue scaffold and engage the bone thereby holding the tissue scaffold in a fixed position against the surface of the bone.
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Abstract
Methods and devices are provided for delivering and affixing tissue replacements. In one embodiment, a tissue scaffold can be delivered into a patient through a cannula to a cavity formed at a defect site in tissue, e.g., cartilage. A delivery shaft can be used to deliver the scaffold through the cannula, and a loading device can help load the scaffold onto the delivery shaft. A delivery guide device can position and temporarily hold the scaffold within the cavity. The delivery guide device can guide one or more surgical instruments to the scaffold to affix the scaffold within the cavity, e.g., to bone underlying the scaffold, using at least one securing mechanism.
115 Citations
8 Claims
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1. A method for delivering a tissue scaffold, comprising:
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advancing a proximal end of a delivery shaft into a distal end of a delivery cannula to position a tissue scaffold disposed on a distal end of the delivery shaft within the distal end of the delivery cannula, the delivery cannula causing the tissue scaffold to fold around at least one prong on the distal end of the delivery shaft as the tissue scaffold is advanced into the distal end of the delivery cannula; advancing the cannula into a body of a patient with the tissue scaffold and delivery shaft disposed therein, and positioning the at least one prong on the delivery shaft against bone to position the tissue scaffold; and removing the cannula leaving the delivery shaft and tissue scaffold extending into a body of a patient, and advancing a delivery guide over the delivery shaft to cause a distal end of the delivery guide to engage the tissue scaffold and engage the bone thereby holding the tissue scaffold in a fixed position against the surface of the bone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification