Expandable prosthesis for a tissue repair system
First Claim
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1. A prosthesis assembly configured for implantation into tissue, comprising:
- a prosthesis comprising a driving portion and a base portion;
the driving portion including a driving tip portion, a central portion, and a wedge portion, wherein the driving tip portion is shaped and dimensioned to penetrate bone to create a first bore;
the base portion including a forward portion and a rearward portion, the forward portion being associated with the driving portion;
the base portion comprising a first longitudinal portion that extends along the length of the base portion and a second longitudinal portion that extends along the length of the base portion;
the first longitudinal portion and the second longitudinal portion being attached at the rearward portion, and the first longitudinal portion and the second longitudinal portion being separable at the forward portion;
the first longitudinal portion being associated with a first surface of the wedge portion, and the second longitudinal portion being associated with a second surface of the wedge portion;
the prosthesis including a longitudinal cavity that is between the first longitudinal portion and the second longitudinal portion, that is aligned with a longitudinal axis of the prosthesis, and that extends through the prosthesis at least from the forward portion of the base portion to the rearward portion of the base portion;
wherein the longitudinal cavity has a first length;
a tube having an end portion disposed adjacent to the rearward portion of the base portion, wherein the tube has a second length;
a pin disposed in the longitudinal cavity and the tube, wherein the pin has a third length;
wherein the pin contacts the driving portion and extends from the driving portion through the longitudinal cavity and beyond the rearward portion through the tube;
wherein the third length of the pin is at least as long as the combined length of the first length of the longitudinal cavity and the second length of the tube; and
wherein during implantation of the prosthesis;
the driving portion and the base portion of the prosthesis move in a forward direction from a pre-implantation position to a final implantation position, with no rearward direction movement,the end portion of the tube applies a force in the forward direction to the rearward portion of the base portion,the first longitudinal portion and the second longitudinal portion are configured to engage the wedge portion and spread apart from one another,the first longitudinal portion is shaped and dimensioned to penetrate the bone to create a second bore, wherein a direction of extension of the second bore differs from that of the first bore created by the driving tip portion, andthe second longitudinal portion is shaped and dimensioned to penetrate the bone to create a third bore, wherein a direction of extension of the third bore differs from that of the first bore created by the driving tip portion and the second bore created by the first longitudinal portion.
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Accused Products
Abstract
A prosthesis for use with a tissue repair system is capable of expanding during implantation into the tissue. The prosthesis can include a driving portion and a base portion. The driving portion helps drive the prosthesis into a tissue during a first stage of implantation. The base portion is configured to expand or splay open during a second stage of implantation. The prosthesis may include a hole for receiving a portion of a suture thread.
181 Citations
42 Claims
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1. A prosthesis assembly configured for implantation into tissue, comprising:
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a prosthesis comprising a driving portion and a base portion; the driving portion including a driving tip portion, a central portion, and a wedge portion, wherein the driving tip portion is shaped and dimensioned to penetrate bone to create a first bore; the base portion including a forward portion and a rearward portion, the forward portion being associated with the driving portion; the base portion comprising a first longitudinal portion that extends along the length of the base portion and a second longitudinal portion that extends along the length of the base portion; the first longitudinal portion and the second longitudinal portion being attached at the rearward portion, and the first longitudinal portion and the second longitudinal portion being separable at the forward portion; the first longitudinal portion being associated with a first surface of the wedge portion, and the second longitudinal portion being associated with a second surface of the wedge portion; the prosthesis including a longitudinal cavity that is between the first longitudinal portion and the second longitudinal portion, that is aligned with a longitudinal axis of the prosthesis, and that extends through the prosthesis at least from the forward portion of the base portion to the rearward portion of the base portion; wherein the longitudinal cavity has a first length; a tube having an end portion disposed adjacent to the rearward portion of the base portion, wherein the tube has a second length; a pin disposed in the longitudinal cavity and the tube, wherein the pin has a third length; wherein the pin contacts the driving portion and extends from the driving portion through the longitudinal cavity and beyond the rearward portion through the tube; wherein the third length of the pin is at least as long as the combined length of the first length of the longitudinal cavity and the second length of the tube; and wherein during implantation of the prosthesis; the driving portion and the base portion of the prosthesis move in a forward direction from a pre-implantation position to a final implantation position, with no rearward direction movement, the end portion of the tube applies a force in the forward direction to the rearward portion of the base portion, the first longitudinal portion and the second longitudinal portion are configured to engage the wedge portion and spread apart from one another, the first longitudinal portion is shaped and dimensioned to penetrate the bone to create a second bore, wherein a direction of extension of the second bore differs from that of the first bore created by the driving tip portion, and the second longitudinal portion is shaped and dimensioned to penetrate the bone to create a third bore, wherein a direction of extension of the third bore differs from that of the first bore created by the driving tip portion and the second bore created by the first longitudinal portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A prosthesis assembly for tissue repair, comprising:
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a prosthesis comprising a driving portion and a base portion; the driving portion including a driving tip portion, a central portion, and a wedge portion, wherein the driving tip portion is shaped and dimensioned to penetrate bone in a longitudinal implantation direction; the wedge portion having a wedge surface downwardly inclined in a rearward direction opposite to the longitudinal implantation direction and having a projection projecting above the wedge surface; the base portion including a forward portion and a rearward portion, the forward portion being disposed adjacent to the wedge portion; the base portion being configured to expand by separating into a first longitudinal portion and a second longitudinal portion when the forward portion is engaged by the wedge portion; wherein the forward portion is connected to the wedge portion prior to implantation into a tissue and wherein the forward portion and the wedge portion are configured to separate during an implantation process; wherein the prosthesis includes a longitudinal cavity that is between the first longitudinal portion and the second longitudinal portion, that is aligned with a longitudinal axis of the prosthesis, and that extends through the prosthesis at least from the forward portion of the base portion to the rearward portion of the base portion; a tube; a pin; wherein the tube has an end portion disposed adjacent to the rearward portion of the base portion; wherein the pin is disposed in the longitudinal cavity and the tube; wherein the pin contacts the driving portion and extends from the driving portion through the longitudinal cavity and beyond the rearward portion through the tube; wherein the length of the pin is at least as long as the combined lengths of the longitudinal cavity and the tube; and wherein during the implantation process; the driving portion and the base portion of the prosthesis move in a forward direction from a pre-implantation position to a final implantation position, with no rearward direction movement, the pin applies a first force to the driving portion in the longitudinal implantation direction, and the end portion of the tube applies a second force in the longitudinal implantation direction to the rearward portion of the base portion each of the first longitudinal portion and the second longitudinal portion is configured to engage the wedge portion and spread in a direction lateral to the longitudinal implantation direction, the projection of the wedge surface of the wedge portion engaging an interior surface of the first longitudinal portion, the first longitudinal portion is shaped and dimensioned to penetrate the bone to create a second bore, wherein a direction of extension of the second bore differs from the longitudinal implantation direction, wherein the first longitudinal portion penetrates the bone to a first point at which a first forward distal end of the first longitudinal portion is forward of the driving tip portion of the driving portion, and the second longitudinal portion is shaped and dimensioned to penetrate the bone to create a third bore, wherein a direction of extension of the third bore differs from the longitudinal implantation direction and the direction of extension of the second bore, wherein the second longitudinal portion penetrates the bone to a second point at which a second forward distal end of the second longitudinal portion is forward of the driving tip portion of the driving portion. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification