Pivoting implant holder

• US 7,648,507 B2
• Filed: 12/16/2003
• Issued: 01/19/2010
• Est. Priority Date: 12/16/2003
• Status: Active Grant

• Current Assignee: Depuy Spine Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Acromed Incorporated (Johnson & Johnson)
• Inventors: Techiera, Richard C., Selover, Sean P.
• Primary Examiner(s): Barrett; Thomas C
• Assistant Examiner(s): Swiger; James L.
• Application Number:
  US10/737,538
• Publication Number:
  US 20050131420A1
• Time in Patent Office: 2,226 Days
• Field of Search: 606/51, 606/69, 606/86, 606/61, 606/87, 606/99, 606/104, 606/53, 606/86.B, 606/144, 606902-906, 606/86.A, 606/915, 606/246, 606250-265, 606278-279, 606/174, 606205-208, 227/175.1, 227/179.1, 227/178.1, 294/16, 294/27.1, 294/28, 813/49
• US Class Current: 606/86.00A
• CPC Class Codes: A61B 17/7001 Screws or hooks combined with longitudinal elements which do not contact vertebrae A61B17/7058 takes precedence
• CPC Class Codes: A61B 17/7002 Longitudinal elements, e.g. rods
• CPC Class Codes: A61B 17/7059 Cortical plates A61B17/7007, A61B17/7058 take precedence
• CPC Class Codes: A61B 17/7085 for insertion of a longitudinal element down one or more hollow screw or hook extensions, i.e. at least a part of the element within an extension has a component of movement parallel to the extension's axis
• CPC Class Codes: A61B 17/808 Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
• CPC Class Codes: A61B 2017/2922 toggle linkages

Abstract

A medical inserter tool is provided for introducing medical implants into a surgical site, preferably using minimally invasive techniques. The inserter tool can have a variety of configurations, but in general, the inserter tool should be effective to engage and manipulate the implant into two or more positions. In an exemplary embodiment, the tool includes an elongate shaft having proximal and distal ends and defining a longitudinal axis extending therebetween, and a pivoting element that is coupled to the distal end of the shaft and that is adapted to engage a spinal implant. In use, the pivoting element is movable between first and second positions to allow an implant to be introduced through a percutaneous access device in a lengthwise orientation, and to be manipulated subcutaneously to be positioned in a desired orientation.

Claims

1. A spinal rod inserter tool, comprising:

an elongate shaft having proximal and distal ends defining a longitudinal axis extending therebetween;

a pivoting element having first and second opposed ends, the first end being pivotally coupled to the distal end of the elongate shaft and the second end having a mating element adapted to releasably engage a spinal rod such that the spinal rod is parallel with a longitudinal axis extending between the first and second opposed ends of the pivoting element, the pivoting element being movable between a first position, in which the longitudinal axis of the pivoting element is coaxial with the longitudinal axis of the shaft, and a second position, in which the longitudinal axis of the pivoting element is substantially transverse to the longitudinal axis of the shaft; and

an actuator mechanism coupled to the proximal end of the elongate shaft and operably connected to the pivoting element to move the pivoting element between the first and second positions.

2. The spinal rod inserter tool of claim 1, wherein the actuator mechanism comprises a trigger formed on the proximal end of the elongate shaft, and a pusher shaft slidably disposed with respect to the elongate shaft and extending between the trigger and the pivoting element such that movement of the trigger is effective to move the pusher shaft to effect pivoting movement of the pivoting element between the first and second positions.

3. The spinal rod inserter tool of claim 2, wherein the elongate shaft includes upper and lower portions, and wherein the pusher shaft is slidably disposed therebetween.

4. The spinal rod inserter tool of claim 2, wherein the pivoting element is biased to the first position, and actuation of the trigger is effective to move the pivoting element into the second position.

5. The spinal rod inserter tool of claim 1, wherein the pivoting element is biased to the first position.

6. The spinal rod inserter of claim 5, further comprising a biasing element coupled to a trigger mechanism and effective to bias the pivoting element into the first position.

7. The spinal rod inserter tool of claim 1, wherein the mating element comprises a threaded engagement mechanism rotatably disposed in the second end thereof and adapted to releasably engage a spinal rod.

8. The spinal rod inserter tool of claim 7, wherein a longitudinal axis of the threaded engagement mechanism is offset from the longitudinal axis of the elongate shaft when the pivoting element is in the second position.

9. The spinal rod inserter tool of claim 8, further comprising a lumen formed in a proximal portion of the elongate shaft and offset from the longitudinal axis of the elongate shaft, the lumen being adapted to receive a driver shaft that is effective to rotate the threaded engagement mechanism in the pivoting element when the pivoting element is in the second position.

10. A spinal rod inserter tool, comprising:

an elongate shaft having proximal and distal ends and defining a longitudinal axis extending therebetween;

a pivoting element pivotally coupled to the distal end of the elongate shaft and movable between first and second positions, the pivoting element being adapted to engage a spinal rod such that a longitudinal axis of the pivoting element extends substantially parallel to a longitudinal axis of the spinal rod; and

a cam mechanism formed between the elongate shaft and the pivoting element and operably connected to the pivoting element such that the cam mechanism controllably causes the pivoting element to move between the first and second positions, the cam mechanism comprising a pin member formed on one of the pivoting element and the elongate shaft, and an elongate slot formed in the other one of the pivoting element and the elongate shaft, the elongate slot slidably receiving the pin member.