System and method for manipulating a spinal construct
View Patent ↗A system and device for manipulating a spinal construct is provided. For example, the manipulation device can include a drive member to be disposed within a first surgical sleeve extending from a first vertebra, and a coupling member positioned adjacent a second surgical sleeve. In one embodiment, at least one of the drive member and the coupling member can be releasably engaged to an actuation mechanism. In one aspect, the actuation mechanism can include a floating and/or auto-locking pivot point thereby allowing a user to quickly and easily position the manipulation device relative to the adjacent surgical sleeves. Additionally, a method of manipulating spinal constructs is also provided.
1. A spinal manipulation device, comprising:
an actuation mechanism, having a longitudinal axis and comprising a first proximal handle and a second proximal handle pivotally coupled at a pivot point and configured to move relative to one another along a first plane;
a drive member having an elongate shaft which is sized and configured to be disposed within an inner lumen of a first surgical sleeve extending from a first vertebra, the elongate shaft extending from a first mounting flange that extends transversely to the longitudinal axis of the actuation mechanism, a longitudinal axis of the elongate shaft being parallel to and offset from the longitudinal axis of the actuation mechanism; and
a coupling member being sized and configured to maintain a spatial relationship relative to a second surgical sleeve extending from a second vertebra as the coupling member pivots relative to the drive member, the coupling member extending from a second mounting flange that extends transversely to the longitudinal axis of the actuation mechanism;
the actuation mechanism being releasably engaged to the drive member and the coupling member at a point distal of the pivot point and effective to pivot the drive member relative to the coupling member along a second plane different from the first plane such that movement of the actuation mechanism is effective to move the first and second surgical sleeves in a plane parallel to and offset from the first plane, the drive member configured to operatively engage the first surgical sleeve independent of the actuation mechanism and the coupling member configured to operatively engage the second surgical sleeve independent of the actuation mechanism.
2. The device of claim 1 , wherein the drive member is configured to operatively engage the first surgical sleeve independent of the coupling member.
3. The device of claim 1 , wherein the coupling member is sized and configured to be positioned immediately above the second surgical sleeve so as to receive a driver as the driver is disposed in an inner lumen of the second surgical sleeve.
4. The device of claim 3 , wherein the coupling member includes a cap-shaped element having a central bore.
5. The device of claim 1 , wherein the coupling member includes a semi-circular extension which is sized and configured to extend along and adjacent to an outer portion of the second surgical sleeve.
6. The system of claim 1 , further comprising a locking mechanism which includes a locking lever element extending from a proximal end of the second handle element and configured to releasably engage a proximal end of the first handle.
7. The device of claim 1 , wherein a distal portion of the first handle is configured to engage the drive member, and a distal portion of the second handle is configured to engage the coupling member thereby allowing the drive member and the coupling member to move towards one another as a proximal end of the first handle pivots towards a proximal end of the second handle.
8. The system of claim 1 , further comprising a locking mechanism configured to lock the drive member relative to the coupling member.
9. The system of claim 1 , wherein the actuation mechanism includes a first engagement mechanism for releasably engaging the driver and a second engagement mechanism for releasably engaging the coupling member.
10. The system of claim 9 , wherein each of the first and second engagement mechanisms comprises an opening formed in a distal portion of the actuation mechanism, the opening being configured to releasably engage a protrusion extending from each of the driver and the coupling member.
11. The system of claim 10 , wherein each of the first and second engagement mechanisms further includes a lever associated with the opening, the lever being movable from a first position in which the protrusion is secured within the opening to a second position in which the protrusion is disengagable from the opening.
12. The system of claim 10 , wherein the openings extend transverse to a central axis of the actuation mechanism.