Methods and devices for delivering and affixing tissue scaffolds
First Claim
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1. A tissue scaffold delivery system, comprising:
- a delivery guide having an inner lumen extending therethrough and at least one tooth extending from a perimeter of a distal end thereof at a fixed longitudinal position relative to the delivery guide, the at least one tooth being configured to penetrate a tissue scaffold and to engage bone to hold a tissue scaffold in a fixed position relative to the bone, the delivery guide further including at least one window adjacent to the distal end and configured to enable viewing of a component disposed within the inner lumen at the distal end.
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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.
93 Citations
20 Claims
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1. A tissue scaffold delivery system, comprising:
a delivery guide having an inner lumen extending therethrough and at least one tooth extending from a perimeter of a distal end thereof at a fixed longitudinal position relative to the delivery guide, the at least one tooth being configured to penetrate a tissue scaffold and to engage bone to hold a tissue scaffold in a fixed position relative to the bone, the delivery guide further including at least one window adjacent to the distal end and configured to enable viewing of a component disposed within the inner lumen at the distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A tissue scaffold delivery system, comprising:
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a delivery guide having an inner lumen extending therethrough and at least one tooth extending from a perimeter of a distal end thereof, the at least one tooth being configured to penetrate a tissue scaffold and to engage bone to hold a tissue scaffold in a fixed position relative to the bone, the delivery guide further including at least one window adjacent to the distal end and configured to enable viewing of a component disposed within the inner lumen at the distal end; and a loading block having a surface configured to seat a tissue scaffold thereon, the surface having at least one opening formed therein and configured to receive the at least one tooth on the delivery guide such that the at least one tooth can extend through a tissue scaffold seated on the surface, the loading block further including a guide member extending from the surface and having at least one channel formed therein, the at least one channel being positioned to guide the at least one tooth into the at least one opening on the surface. - View Dependent Claims (16, 17, 18)
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19. A tissue scaffold delivery system, comprising:
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a delivery guide having an inner lumen extending therethrough and at least one tooth extending from a perimeter of a distal end thereof, the at least one tooth being configured to penetrate a tissue scaffold and to engage bone to hold a tissue scaffold in a fixed position relative to the bone, the delivery guide further including at least one window adjacent to the distal end and configured to enable viewing of a component disposed within the inner lumen at the distal end; a delivery shaft having at least one prong extending from a distal end thereof, the at least one prong being configured to extend through a tissue scaffold, and the delivery guide being disposable over the delivery shaft such that the at least one tooth is configured to engage a tissue scaffold disposed on the at least one prong of the delivery shaft; and a delivery cannula having a funnel coupled to a distal end thereof, the delivery shaft being slidably disposable through the delivery cannula. - View Dependent Claims (20)
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Specification