Pivoting implant holder

• US 7,648,506 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: McCord, David, Techiera, Richard C., Selover, Sean P.
• Primary Examiner(s): Barrett; Thomas C
• Assistant Examiner(s): Swiger; James L.
• Application Number:
  US10/737,166
• Publication Number:
  US 20050131419A1
• 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, 606/915, 606/281, 606/282, 606/246, 606/279, 606/250, 606/174, 606205-208, 606/86.A, 227/175.1, 227/179.1, 227/178.1, 814/82, 81 5712- 5724, 81 5726- 5731, 811/777.5, 814/36, 814/51, 81/902, 81/911, 811/81, 446/473, 42/53, 414/6, 411/393
• US Class Current: 606/86.00A
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/705 for linking adjacent ends of longitudinal elements
• 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: Y10S 606/914 Toolkit for installing or removing spinal positioner or stabilizer

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 medical implant inserter tool, comprising:

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

a pivoting element coupled to the distal end of the elongate shaft and movable between a first position, in which the pivoting element is longitudinally aligned with the shaft, and a second position, in which the pivoting element is substantially transverse to the shaft, wherein the pivoting element includes a threaded engagement mechanism rotatably disposed therein and adapted to releasably engage a medical implant;

an actuator mechanism coupled to the proximal end of the elongate shaft and effective to move the pivoting element between the first and second positions; and

a driver shaft coupled to the elongate shaft and including a distal end that is effective to rotate the threaded engagement mechanism in the pivoting element, wherein the driver shaft is separated from the threaded engagement mechanism when the pivoting element is in the second position, and the driver shaft is coupled to and effective to rotate the threaded engagement mechanism when the pivoting element is in the first position.

2. The medical implant 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 medical implant inserter tool of claim 2, wherein the pivoting element is biased to the first position.

4. The medical implant inserter tool of claim 3, further comprising a biasing element coupled to the trigger and effective to bias the pivoting element to the first position.

5. The medical implant inserter tool of claim 3, wherein actuation of the trigger is effective to move the pivoting element into the second position.

6. The medical implant inserter tool of claim 1, wherein the threaded engagement mechanism includes a socket formed in a proximal end thereof for receiving the distal end of the driver shaft.

7. The medical implant inserter tool of claim 6, wherein the socket of the pivoting element and the distal end of the driver shaft have complementary shapes.

8. The medical implant inserter tool of claim 1, further comprising a knob formed on a proximal end of the driver shaft and effective to rotate the driver shaft.

9. The medical implant inserter tool of claim 1, wherein the driver shaft extends through a lumen formed in the elongate shaft.

10. The medical implant inserter tool of claim 9, further comprising an o-ring disposed around a portion of the driver shaft and mated to a portion of the elongate shaft, the o-ring being effective to maintain the position of the driver shaft with respect to the elongate shaft.

11. The medical implant inserter tool of claim 1, further comprising an anti-rotation mechanism formed on the pivoting element and effective to engage and prevent rotation of an implant threadably attached thereto by the threaded engagement mechanism.

12. A medical implant inserter tool, comprising:

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

a pivoting element coupled to the distal end of the elongate shaft and movable between a first position, in which the pivoting element is longitudinally aligned with the shaft, and a second position, in which the pivoting element is substantially transverse to the shaft, wherein the pivoting element includes a threaded engagement mechanism rotatably disposed therein and adapted to releasably engage a medical implant;

an actuator mechanism coupled to the proximal end of the elongate shaft and effective to move the pivoting element between the first and second positions; and

a driver shaft coupled to the elongate shaft and including a distal end that is effective to rotate the threaded engagement mechanism in the pivoting element, wherein the elongate shaft includes an upper portion and a lower portion, the pivoting element being pivotally coupled to the lower portion, and the driver shaft extending between the upper and lower portions.

13. A medical implant inserter tool, comprising:

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

a pivoting element coupled to the distal end of the elongate shaft and movable between a first position, in which the pivoting element is longitudinally aligned with the shaft, and a second position, in which the pivoting element is substantially transverse to the shaft, the pivoting element including a threaded engagement mechanism rotatably disposed therein adapted to releasably engage a medical implant;

a pusher shaft slidably disposed through the elongate shaft and effective to move the pivoting element between the first and second positions; and

a driver shaft coupled to the elongate shaft and including a distal end that is effective to rotate the threaded engagement mechanism in the pivoting element, wherein the driver shaft is separated from the threaded engagement mechanism when the pivoting element is in the second position, and the driver shaft is coupled to and effective to rotate the threaded engagement mechanism when the pivoting element is in the first position.

14. The medical implant inserter tool of claim 13, further comprising a trigger formed on the proximal end of the elongate shaft and coupled to the pusher shaft, the trigger being adapted to move the pusher shaft to effect pivoting movement of the pivoting element between the first and second positions.