초록 ▼

An orthopedic device can include an intramedullary nail with a longitudinal bore, first and second bone fasteners with sleeves and a cannulated movable member received within the longitudinal bore. The movable member defines first and second guiding bores for receiving respectively the first and sec

An orthopedic device can include an intramedullary nail with a longitudinal bore, first and second bone fasteners with sleeves and a cannulated movable member received within the longitudinal bore. The movable member defines first and second guiding bores for receiving respectively the first and second fasteners. Each of the first and second guiding bores includes a pair of opposing deformable elongated strips. Each pair of strips can engage the sleeve of a corresponding bone fastener.

대표청구항 ▼

1. An orthopedic device comprising: an intramedullary implant defining a longitudinal bore having a longitudinal bore axis passing from a first end to an opposed second end of the longitudinal bore;a movable member defining first, second, third, and fourth guiding bores for receiving a corresponding

1. An orthopedic device comprising: an intramedullary implant defining a longitudinal bore having a longitudinal bore axis passing from a first end to an opposed second end of the longitudinal bore;a movable member defining first, second, third, and fourth guiding bores for receiving a corresponding one of a first, second, third, and fourth bone fastener, wherein each of the first, second, third, and fourth guiding bores comprises a first opening, an opposed second opening, and a guiding bore axis that is substantially perpendicular to both the first opening and the second opening, wherein the guiding bore axis of each of the first, second, third, and fourth guiding bores is uniquely three-dimensionally oriented with respect to the longitudinal bore axis, wherein the fourth guiding bore has an open perimeter, wherein the movable member is telescopically movable within the longitudinal bore about and between a first position that engages the first, second, third, and fourth bone fasteners with the intramedullary implant, and a second position that disengages the first, second, third, and fourth bone fasteners from the intramedullary implant; anda locking member threadably engageable with the longitudinal bore of the intramedullary implant and couplable to the movable member, wherein rotation of the locking member relative to the longitudinal bore of the intramedullary implant telescopically moves the movable member about and between the first position and the second position;wherein each of the first, second, third, and fourth guiding bores include ridge formations formed along a portion of a circumference of an interior surface of each of the first, second, third, and fourth guiding bores, wherein the ridge formations are threadably engageable with a threaded portion of the corresponding one of the first, second, third, and fourth bone fasteners to enable removal of the first, second, third and fourth bone fasteners when the movable member is in the second position. 2. The orthopedic device of claim 1, wherein the locking member further comprises a resilient portion that is couplable to the movable member. 3. The orthopedic device of claim 2, wherein the resilient portion is non-rotatably coupleable to the movable member. 4. The orthopedic device of claim 2, wherein the resilient portion further comprises a flange that engages an internal groove of the movable member. 5. The orthopedic device of claim 4, wherein the locking member further comprises a thread-interrupting opening and a thread lock disposed in the thread-interrupting opening. 6. The orthopedic device of claim 1, wherein a proximal inner surface of the longitudinal bore of the intramedullary implant and a proximal outer surface of the movable member have substantially the same cross-sectional shape in a plane transverse to the longitudinal bore axis. 7. The orthopedic device of claim 6, wherein the cross-sectional shape is non-circular. 8. The orthopedic device of claim 1, wherein one of the first, second, third, and fourth guiding bores further comprises a pair of opposing deformable elongated strips extending in a direction substantially parallel to the guiding bore axis. 9. The orthopedic device of claim 1, wherein the intramedullary implant further comprises an elongated compression slot defined therein that corresponds to a selected one of the first, second, third, and fourth guiding bores of the movable member, wherein, when the selected guiding bore is aligned with the compression slot, the movable member can be selectively moved between positions that allow or inhibit movement of the bone fastener relative to the compression slot. 10. The orthopedic device of claim 1, wherein a selected guiding bore of the first, second, third, and fourth guiding bores intersects at least one of the remaining guiding bores. 11. An orthopedic device comprising: an intramedullary implant defining a longitudinal bore having a longitudinal bore axis passing from a first end to an opposed second end of the longitudinal bore;a movable member defining first, second, and third guiding bores for receiving a corresponding one of a first, second, and third bone fastener, wherein each guiding bore comprises a first opening, an opposed second opening, and a guiding bore axis that is substantially perpendicular to both the first opening and the second opening, wherein the guiding bore axis of each guiding bore is uniquely three-dimensionally oriented with respect to the longitudinal bore axis, wherein the third guiding bore has an open perimeter, wherein the movable member is telescopically movable within the longitudinal bore about and between a first position that engages the first, second, and third bone fasteners with the intramedullary implant, and a second position that disengages the first, second, and third bone fasteners from the intramedullary implant; anda locking member threadably engageable with the longitudinal bore of the intramedullary implant and couplable to the movable member, wherein rotation of the locking member relative to the longitudinal bore of the intramedullary implant telescopically moves the movable member about and between the first position and the second position;wherein each of the guiding bores include ridge formations formed along a portion of a circumference of an interior surface of each of the guiding bores, wherein the ridge formations are threadably engageable with a threaded portion of the corresponding one of the bone fasteners to enable selective removal of the bone fasteners when the movable member is in the second position. 12. The orthopedic device of claim 11, wherein the locking member further comprises a resilient portion that is couplable to the movable member. 13. The orthopedic device of claim 12, wherein the resilient portion is non-rotatably coupleable to the movable member. 14. The orthopedic device of claim 12, wherein the resilient portion further comprises a flange that engages an internal groove of the movable member. 15. The orthopedic device of claim 14, wherein the locking member further comprises a thread-interrupting opening and a thread lock disposed in the thread-interrupting opening. 16. The orthopedic device of claim 11, wherein a proximal inner surface of the longitudinal bore of the intramedullary implant and a proximal outer surface of the movable member have substantially the same cross-sectional shape in a plane transverse to the longitudinal bore axis. 17. The orthopedic device of claim 16, wherein the cross-sectional shape is non-circular. 18. The orthopedic device of claim 11, wherein one of the first, second, and third guiding bores further comprises a pair of opposing deformable elongated strips extending in a direction substantially parallel to the guiding bore axis. 19. The orthopedic device of claim 11, wherein the intramedullary implant further comprises an elongated compression slot defined therein that corresponds to a selected one of the first, second, and third guiding bores of the movable member, wherein, when the selected guiding bore is aligned with the compression slot, the movable member can be selectively moved between positions that allow or inhibit movement of the bone fastener relative to the compression slot. 20. The orthopedic device of claim 11, wherein the movable member further defines a fourth guiding bore for receiving a fourth bone fastener. 21. The orthopedic device of claim 11, wherein a selected guiding bore of the first, second, and third guiding bores intersects at least one of the remaining guiding bores.