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a frangible connection that joins the proximal member to the anchor body; and |
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A knotless suture anchor system is disclosed for improved anchoring in tissue. The knotless suture anchor system includes an anchor body having an exterior surface, a proximal end, a distal end, a longitudinal axis extending between the proximal and distal ends, an interior longitudinal passageway extending at least partway from the proximal end toward the distal end, a proximal opening communicating with the longitudinal passageway nearer the proximal end, and a distal opening communicating with the longitudinal passageway nearer the distal end. The knotless suture anchor system also includes an interference member insertable distally into the longitudinal passageway to secure a portion of a suture within the longitudinal passageway by compressing the portion of the suture between the interference member and the anchor body, and a frangible connection that joins a proximal member to the anchor body. |
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external drive threads between the proximal end and the distal end, the external drive threads configured to engage internal drive threads of the inserter. |
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a drive feature connected to the drive shaft at the distal end; and |
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a drive coupler connected to the drive shaft at the proximal end; |
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wherein the driver comprises: |
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a driver operable to engage the set screw and to urge the set screw into the anchor body; and |
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20. The knotless suture anchor system of claim 18 further comprising: |
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19. The knotless suture anchor system of claim 18 wherein the inserter is operable to engage the proximal member in an axial force transmitting relationship in a first direction, the inserter having a pushrod mounted for axial translation within the inserter, the pushrod operable to engage the set screw in an axial force transmitting relationship in a second direction opposite the first direction and break the frangible connection to separate the anchor body from the proximal member in response to axial translation of the pushrod relative to the inserter. |
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a tensioner connected to an inserter operable to engage the proximal member, the tensioner operable to secure a second portion of the suture contiguous to the first portion and extending from the anchor body, the tensioner also operable to apply tension to the second portion of the suture. |
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a drive coupler connected to the drive shaft at the proximal end; and |
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a set screw insertable distally into the longitudinal passageway to releasably secure a first portion of a suture within the longitudinal passageway by compressing the first portion of the suture between external knuckle threads of the set screw and internal helical threads at the proximal end of the anchor body; |
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a proximal member joined to the anchor body, the proximal member having external threads at a proximal end of the proximal member; |
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an anchor body having an exterior surface, a proximal end, a distal end, a longitudinal axis extending between the proximal and distal ends, an interior longitudinal passageway extending at least partway from the proximal end toward the distal end, a proximal opening communicating with the longitudinal passageway nearer the proximal end, and a first distal opening communicating with the longitudinal passageway nearer the distal end; |
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18. A knotless suture anchor system comprising: |
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17. The knotless suture anchor system of claim 16 wherein the proximal member comprises external helical threads configured to engage internal helical threads of the shaft. |
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16. The knotless suture anchor system of claim 15 wherein the inserter comprises a shaft having a proximal end and a distal end, the shaft operable to engage the proximal member at the distal end of the shaft, the shaft coupled to a tensioner comprising: |
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15. The knotless suture anchor system of claim 14 further comprising an inserter operable to engage the proximal member in an axial force transmitting relationship in a first direction, the inserter having a pushrod mounted for axial translation within the inserter, the pushrod operable to engage the interference member in an axial force transmitting relationship in a second direction opposite the first direction and break the frangible connection between the proximal member and the anchor body in response to axial translation of the pushrod relative to the inserter. |
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14. The knotless suture anchor system of claim 13 further comprising a proximal member connected to the proximal end of the anchor body by a frangible connection. |
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As used herein, a "set screw" refers to a type of screw generally used to secure a first object within, or against, second object, usually without using a nut. Set screws can be headless, meaning that the screw is fully threaded and has no head projecting past the thread's major diameter. If a set screw does have a head, the thread may extend to the head. A set screw can be driven by an internal-wrenching drive, such as a hex socket (Allen), star (Torx), square socket (Robertson), or a slot. A set screw can be driven by a knob on or part of a head of the set screw. The knob may be sized to facilitate rotation by a user using their fingers and may be referred to as a thumb screw. In one embodiment, the set screw passes through a threaded hole in the second object (an outer object) and is tightened against the first object (an inner object) to prevent the inner object from moving relative to the outer object. The set screw can exert a compressional and/or clamping force through an end of the set screw that projects through the threaded hole. (Search "set screw" on Wikipedia.com Aug. 17, 2020. Modified. Accessed Jan. 6, 2020.) |
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