SYSTEM AND METHOD FOR MANIPULATING A SPINAL CONSTRUCT

• US 20100004695A1
• Filed: 07/07/2008
• Published: 01/07/2010
• Est. Priority Date: 07/07/2008
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Spine Incorporated (Johnson & Johnson)
• Inventors: Beaudoin, Paul G., Baker, Garth G., Stad, Shawn D., Ramsay, Christopher, Tannoury, Tony
• Granted Patent: US 8,444,649 B2
• Time in Patent Office: Days
• US Class Current: 606/86.A
• CPC Class Codes: A61B 17/7032 Screws or hooks with U-shaped head or back through which longitudinal rods pass
• CPC Class Codes: A61B 17/7074 Tools specially adapted for spinal fixation operations other than for bone removal or filler handling A61B17/7062, A61B17/808, A61B17/8858 take precedence; for spinal image producing devices A61B90/36, A61B34/20; markers A61B90/39
• CPC Class Codes: A61B 17/708 with tubular extensions coaxially mounted on the bone anchors

Abstract

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.

Claims

1. A spinal manipulation device, comprising:

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;

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; and

an actuator mechanism effective to pivot the drive member relative to the coupling member, at least one of the drive member and coupling member being releasably engaged to the actuation mechanism.

2. The device of claim 1, wherein both the drive member and the coupling member are releasably engaged to the actuation mechanism.

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 device of claim 1, wherein the actuation mechanism includes a first handle element pivotally coupled to a second handle element at a pivot point.

7. The system of claim 6, 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 element.

8. The device of claim 6, wherein a distal portion of the first handle element is configured to engage the drive member, and a distal portion of the second handle element is configured to engage the coupling member thereby allowing the drive member and the coupling member to move towards one another as the first handle element pivots towards the second handle element.

9. The system of claim 6, wherein a distal portion of the first handle element is configured to engage the coupling member, and a distal portion of the second handle element is configured to engage the drive member thereby allowing the drive member and the coupling member to pivot away from one another as the first handle element pivots towards the second handle element.

10. The system of claim 1, further comprising a locking mechanism configured to lock the drive member relative to the coupling member.

11. A spinal manipulation device, comprising:

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;

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 moves relative to the drive member; and

an actuation mechanism effective to pivot the drive member relative to the coupling member, the actuation mechanism including first and second handles joined at a selectively movable pivot that allows selective lateral positioning of the drive member relative to the coupling member.

12. The device of claim 11, wherein the movable pivot includes an elongate slot formed on the first handle that is sized and configured to receive a pin extending from the second handle element, the pin being configured to releasably engage the elongate slot.

13. The device of claim 12, wherein the elongate slot includes a plurality of seating areas, each being sized and configured to seat and retain the pin at a desired position to create a desired pivot point.

14. The device of claim 11, further comprising a locking mechanism configured to lock the drive member relative to the coupling member.

15. The device of claim 14, wherein the locking mechanism includes a locking lever element extending from a proximal end of the second handle and configured to releasably engage a proximal end of the first handle.

16. The device of claim 11, wherein at least one of the drive member and the coupling member is releasably engaged to the actuation mechanism.

17. The device of claim 11, wherein the coupling member includes a retractable element configured to move from a retracted position to an extending position, the retractable element being positioned above the second surgical sleeve when in the retracted position, and extending along a length of the second surgical sleeve when in the extended position.

18. A spinal manipulation device, comprising:

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;

a coupling member having a retractable element configured to move between a retracted position and an extended position, the coupling member configured to reside above a second surgical sleeve extending from a second vertebra thereby allowing the retractable element to enter an inner lumen of the second surgical sleeve as the retractable member moves from the retracted position to the extended position; and

an actuation mechanism effective to pivot the drive member relative to the coupling member.

19. The device of claim 18, wherein the actuation mechanism includes first and second handles joined at a selectively movable pivot that allows selective lateral positioning of the drive member relative to the coupling member.

20. The device of claim 19, wherein the movable pivot includes an elongate slot formed on the first handle that is sized and configured to receive a pin extending from the second handle element, the pin being in communication with an engagement lever having at least one seating area configured to engage to a corresponding seating area formed along a portion of the elongate slot.

21. The device of claim 20, wherein the seating area of the engagement lever is biased away from the corresponding seating area of the elongate slot in the absence of an actuation force.

22. The device of claim 21, wherein the seating area of the engagement lever is configured to move towards and into contact with the corresponding seating area of the elongate slot during application of the actuation force.

23. The device of claim 18, wherein the retractable element is a rod.

24. A method of manipulating a spinal construct, comprising:

disposing an elongate shaft of a drive member within an inner lumen of a first surgical sleeve extending from a first vertebra of a spinal construct;

positioning a coupling member adjacent a second surgical sleeve extending from a second vertebra of the spinal construct;

engaging at least one of the drive member and the coupling member to an actuation mechanism;

disposing a driver within an inner lumen of the second surgical sleeve; and

providing an actuation force to the actuation mechanism to pivot the drive member relative to the coupling member to provide a desired manipulation force to the spinal construct.

25. The method of claim 24, wherein the steps are performed in a minimally invasive surgical procedure.

26. The method of claim 24, wherein providing the actuation force to the actuation mechanism includes squeezing a second handle element of the actuation mechanism towards the first handle element of the actuation mechanism.

27. The method of claim 24, wherein the steps are performed in an open procedure.