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IPP-0051-US14 cross roads
Referring now to FIGS. 101-104, consequently, the pushrod 1100 may be an elongated cylindrical structure having a proximal end 1110, a distal end 1120, a coupler 1130, much like the drive coupler 1088 of the driver 1080, external threads 1140, much like the external drive threads 1090, a shaft 1150, much like the drive shaft 1082, and a push feature 1160. The coupler 1130 may be an AO quick connect coupler. In certain embodiments, the push feature 1160 is the same as the drive feature 1092. In the illustrated embodiment, the push feature 1160 is different from the drive feature 1092, the push feature 1160 does not include a torx or other drive shaped end. In the illustrated embodiment, the push feature 1160 includes a tapering diameter to a blunt end that fits within the drive recess 790 of the interference member 770. In other embodiments, the push feature 1160 may have a diameter wider than the drive recess 790 can may contact a top of the interference member 770. In another embodiment, the push feature 1160 may have a diameter or configuration that contacts the sidewall 750 of the anchor body 702.
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IPP-0051-US14 cross roads
Referring further to FIGS. 102-104, subsequent sequences of steps can be taken after the pushrod 1100 is inserted into the inserter 900, as shown in FIG. 101. A user may rotate the pushrod 1100 such that the external threads 1140 may engage internal threads 942 of the collar 908. This threaded engagement provides a mechanical force that moves/drives the push feature 1160 against the interference member 770. In FIG. 102, the push feature 1160 contacts the interference member 770 within the drive recess 790.
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IPP-0051-US14 cross roads
FIG. 103 shows magnified/close-up details of this contact, the push feature 1160, the interference member 770, and the anchor body 702. Note the one or more sutures 1034 between the interference member 770 and the internal helical threads 717 of the anchor body 702. FIG. 103 also illustrates that in one embodiment one or more external helical threads 782 of the interference member 770 may contact and/or engage with one or more internal helical threads 717 of the anchor body 702 while others make no contact and/or are not engaged with corresponding threads. In one embodiment, the external helical threads 782 may be knuckle threads. The knuckle threads may have an external helical thread pitch that differs from an internal helical thread pitch of the internal helical threads 717 of the anchor body 702.
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IPP-0051-US14 cross roads
In particular, FIG. 103 illustrates that the external helical threads 782 interface with internal helical threads 717 in a clearance fit. This clearance fit has a length of thread engagement (Arrow LTE) that is shorter than a length of the external helical threads 782 (Arrow EHT). Advantageously, such an interface may provide strong reliable fixation of the one or more sutures 1034 within the anchor body 702 and still prevent severing the one or more sutures 1034 within the anchor body 702.
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IPP-0051-US14 cross roads
Returning to the sequence of operations, FIG. 103 illustrates that the shaft 902 of the inserter 900 engages the proximal member 704 in an axial force transmitting relationship in a first direction 1170. In the illustrated embodiment, the axial force transmitting relationship is that the shaft 902 holds the proximal member 704 in place and places an axial force on the proximal member 704 in direction 1170.
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IPP-0051-US14 cross roads
Once the push feature 1160 contacts the interference member 770 (or sidewall 750) a user may next connect the coupler 1130 to a manual or powered tool and rotate the pushrod 1100 such that the external threads 1140 and internal threads 942 move past each other and move the pushrod 1100 in second direction 1180. This interaction is referred to herein as an axial force transmitting relationship in the second direction 1180. In one embodiment, the user may couple the pushrod 1100 to a manual or powered mechanism that imparts an axial force, such as a pounding force towards the distal end of the inserter 900. In such an embodiment, a user may simply pound on the pushrod 1100 with a mallet or hammer. In these embodiments, the pushrod 1100 may not include external threads 1140.
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IPP-0051-US14 cross roads
In the illustrated embodiment, the mechanical advantage of the external threads 1140 and internal threads 942 create a significant force that presses the push feature 1160 against the interference member 770 and/or the anchor body 702. Eventually, this force causes the frangible connection 706 to break (See FIG. 104 broken frangible connection 1190) which separates the anchor body 702 from the proximal member 704. The anchor body 702 then remains within a patient and the one or more sutures 1034 remain under tension while the interference member 770 is deployed and the anchor body 702 is deployed.
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IPP-0051-US14 cross roads
The following are further examples of the present disclosure.
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IPP-0051-US14 cross roads
A knotless suture anchor comprising:
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IPP-0051-US14 cross roads
an anchor body having an exterior surface, a proximal end, a distal end, a longitudinal axis extending between the proximal and distal end, 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; and
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IPP-0051-US14 cross roads
a first portion of a suture extending within the longitudinal passageway between the proximal opening and the distal opening, a second portion of the suture contiguous to the first portion and extending out of the anchor body, a third portion of the suture contiguous to the second portion and extending within the longitudinal passageway proximally to distally, and a fourth portion of the suture contiguous to the third portion and extending along the exterior surface distally to proximally.
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IPP-0051-US14 cross roads
The knotless suture anchor of example 1 further comprising an interference member operable to axially slide into the longitudinal passageway and secure the first portion of the suture and the third portion of the suture within the longitudinal passageway by compressing the suture portions between the interference member and the anchor body.
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IPP-0051-US14 cross roads
The knotless suture anchor of example 1 further comprising a proximal member joined to the anchor body by a frangible connection, a proximal member axial passage within the proximal member, the proximal member axial passage containing an interference member coaxially aligned with the longitudinal passageway.
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IPP-0051-US14 cross roads
The knotless suture anchor of example 3 further comprising an interference member retainer having a retainer axial passage, the interference member retainer engaging the proximal member axial passage in axial sliding relationship, the interference member engaging the retainer axial passage in axial sliding relationship.
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IPP-0051-US14 cross roads
The knotless suture anchor of example 4 further comprising an inserter operable to engage the proximal member in axial force transmitting relationship in a first direction, the inserter having a pushrod mounted for axial translation within the inserter, the pushrod being operable to engage the interference member in axial force transmitting relationship in a second direction opposite the first direction and expel the interference member from the proximal member into the anchor body, the pushrod being further operable to engage the interference member retainer in axial force transmitting relationship to press the interference member retainer against the anchor body and separate the anchor body and proximal member at the frangible connection.
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IPP-0051-US14 cross roads
The knotless suture anchor of example 1 wherein the anchor body has a plurality of distal openings.
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IPP-0051-US14 cross roads
The knotless suture anchor of example 6 wherein the plurality of distal openings comprises a single opening on a first side of the anchor body and a pair of openings on a second side of the anchor body opposite the first side.
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IPP-0051-US14 cross roads
The knotless suture anchor of example 6 wherein the plurality of distal openings comprises first and second openings through a sidewall of the anchor body nearer the distal end than the proximal end.
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IPP-0051-US14 cross roads
The knotless suture anchor of example 6 wherein the first portion of the suture passes through at least one of the plurality of distal openings and the third portion of the suture passes through at least another of the plurality of distal openings.
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IPP-0051-US14 cross roads
an anchor body having an exterior surface, a proximal end, a distal end, a longitudinal axis extending between the proximal and distal end, 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 than the proximal end;
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