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US 12,569,334 B2Granted
Winged grafts for tympanic membrane repair and augmentation
AssigneesMassachusetts Eye and Ear Infirmary, President and Fellows of Harvard College
InventorsElliott Kozin, Aaron K. Remenschneider, Nicole Black
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Abstract
The disclosure relates to winged graft devices, methods of manufacture, and methods of use to repair, e.g., repair perforations, in tympanic membranes, or to augment defective tympanic membranes.
Claims19
A winged graft device for use in repairing or augmenting a tympanic membrane having an opening, comprising
- a first graft material layer;
- and
- a second graft material layer,
- wherein each of the first and second graft material layers have a shape that corresponds generally to a shape of the opening in the tympanic membrane,
- wherein each of the first and second graft material layers has a size that extends beyond a perimeter of the opening in the tympanic membrane, and wherein the first and second graft material layers have the same, or about the same, outer diameter,
- wherein each of the first and second graft material layers has at least one radial slit that extends from an outer perimeter of the graft material layer towards a center of the graft material layer, wherein if there are two or more radial slits, the two or more slits do not touch, leaving a bridge of graft material at about the center of each graft material layer between the slits,
- wherein the two centers or bridges of graft material in the first and second graft material layers are connected to each other to form a winged graft device comprising at least first and second medial wings that together form an underlay portion of the winged graft device, and at least first and second lateral wings that together form an overlay portion of the winged graft device, and
- wherein the first graft material layer is rotated with respect to the second graft material layer such that the radial slit or slits in the first graft material layer do not overlap with the radial slit or slits in the second graft material layer such that there are no slits that pass all the way through the two graft material layers.
5 more elements
A winged graft device for use in repairing or augmenting a tympanic membrane having an opening, comprising
- a first graft material layer;
- and
- a second graft material layer,
- wherein each of the first and second graft material layers have a shape that corresponds generally to a shape of the opening in the tympanic membrane,
- wherein each of the first and second graft material layers has a size that extends beyond a perimeter of the opening in the tympanic membrane, and wherein the first and second graft material layers have the same, or about the same, outer diameter,
- wherein each of the first and second graft material layers has at least two radial slits that extend from an outer perimeter of the graft material layer towards a center of the graft material layer to form two wings in each of the first and second graft materials, wherein the two or more slits do not touch, leaving a bridge of graft material at about the center of each graft material layer between the slits and the two wings,
- wherein the two centers or bridges of graft material in the first and second graft material layers are connected to each other to form a winged graft device comprising at least first and second medial wings that together form an underlay portion of the winged graft device, and at least first and second lateral wings that together form an overlay portion of the winged graft device,
- wherein the first medial wing of the winged graft device comprises a first wing of the first graft material layer,
- wherein the first lateral wing of the winged graft device comprises a second wing of the first graft material layer,
- wherein the second medial wing of the winged graft device comprises a first wing of the second graft material layer,
- wherein the second lateral wing of the winged graft device comprises a second wing of the second graft material layer, and
- wherein each of the two lateral wings and each of the two medial wings are all about the same size.
9 more elements
Dependencies are inferred from the claim text.