Rod inserter and rod with reduced diameter end

• US 7,686,809 B2
• Filed: 01/09/2007
• Issued: 03/30/2010
• Est. Priority Date: 09/25/2006
• Status: Active Grant

• Current Assignee: Stryker European Operations Holdings, LLC (Stryker Corporation)
• Original Assignee: Stryker Spine
• Inventors: Triplett, Daniel, Mohr, Karen, Millard, Thierry, Fallin, T. Wade
• Primary Examiner(s): Robert; Eduardo C
• Assistant Examiner(s): DUFOUR, DEVANIE A
• Application Number:
  US11/651,442
• Publication Number:
  US 20080077136A1
• Time in Patent Office: 1,176 Days
• Field of Search: 606/86.A, 606/86.B, 606/86.R, 606/99, 606/104, 606/279, 606/914, 246/006, 246/017, 132/212, 132/270
• US Class Current: 606/86.00A
• CPC Class Codes: A61B 17/7004 with a cross-section which varies along its length A61B17/7019 takes precedence
• CPC Class Codes: A61B 17/7011 Longitudinal element being non-straight, e.g. curved, angled or branched adjustable length longitudinal elements A61B17/7014; A61B17/7019 takes precedence, e.g. coil springs
• CPC Class Codes: A61B 17/7083 Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
• 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

Abstract

An inserter tool for coupling a spinal rod with an implant includes an outer shaft having a proximal end, a distal end and an elongated opening extending between the proximal and distal ends, a handle secured to the proximal end of the outer shaft, and an inner shaft having a proximal end and a distal end, the inner shaft being telescopically received within the elongated opening of the outer shaft and being adapted to move between the proximal and distal ends of the outer shaft. The tool includes a compressible clamping tip secured to the distal end of the inner shaft, the clamping tip including a first section secured to the distal end of the inner shaft, a flexible arm that extends from the first section, and an opening disposed between the first section and the flexible arm. A knob is coupled with the proximal end of the inner shaft, the knob being rotatable in a first direction for extending the clamping tip from the distal end of the outer shaft and in a second direction for retracting the clamping tip into the distal end of the outer shaft so as to compress the flexible arm of the clamping tip toward the first section of the clamping tip.

Claims

1. An inserter tool for coupling a spinal rod with an implant comprising:

an outer shaft having a proximal end, a distal end and an elongated opening extending between the proximal and distal ends;

a handle secured to the proximal end of said outer shaft;

an inner shaft having a proximal end and a distal end, said inner shaft being telescopically received within the elongated opening of said outer shaft and being adapted to move between the proximal and distal ends of said outer shaft;

a compressible clamping tip secured to the distal end of said inner shaft, said clamping tip including a first section having a proximal end and a distal end, said proximal end of said first section secured to the distal end of said inner shaft, a flexible arm that extends from the distal end of the first section, and an opening disposed between the first section and the flexible arm;

a knob coupled with the proximal end of said inner shaft, said knob being rotatable in a first direction for extending said clamping tip from the distal end of said outer shaft and in a second direction for retracting said clamping tip into the distal end of said outer shaft so as to compress the flexible arm of said clamping tip toward the first section of said clamping tip.

2. The inserter tool as claimed in claim 1, further comprising a socket disposed in the opening of said clamping tip, said socket having a slot that enables said socket to be compressed.

3. The inserter tool as claimed in claim 2, wherein said socket is a ball socket having an aperture adapted to receive a stabilizing rod.

4. The inserter tool as claimed in claim 3, wherein the opening of said clamping tip defines an inner surface and said ball socket has an outer surface with a plurality of notches formed therein that are adapted to engage the inner surface of the opening.

5. The tool as claimed in claim 1, wherein said inner shaft extends through said handle for being attached to said knob.

6. The tool as claimed in claim 5, wherein the proximal end of said inner shaft has threads and said knob has a female opening with internal threads that are adapted to receive the threads of said inner shaft.

7. The tool as claimed in claim 1, wherein said clamping tip has a hook shape and the flexible arm of said clamping tip has a shoulder that is engageable with the distal end of said outer shaft when said inner shaft is retracted relative to said outer shaft.

8. The tool as claimed in claim 7, wherein the flexible arm of said clamping tip is connected with the first section of said clamping tip through a flexible intermediate section.

9. The tool as claimed in claim 8, wherein the flexible intermediate section has a curved surface that extends between the first section of said clamping tip and the flexible arm of said clamping tip.

10. The tool as claimed in claim 1, wherein said tool is adapted to engage a stabilizing rod being secured by said clamping tip.

11. The tool as claimed in claim 10, wherein said stabilizing rod has at least one end with a reduced diameter and said clamping tip is engageable with the reduced diameter end.

12. The tool as claimed in claim 11, wherein the reduced diameter end has a spherical surface and said clamping tip is engageable with the reduced diameter end.

13. The tool as claimed in claim 1, wherein said handle has a roughened surface.

14. An inserter tool comprising:

an outer shaft having a proximal end, a distal end and an elongated opening extending between the proximal and distal ends;

a handle secured to the proximal end of said outer shaft;

an inner shaft telescopically received within the elongated opening of said outer shaft and being adapted to move between proximal and distal ends of said outer shaft;

a clamping tip secured to a distal end of said inner shaft, said clamping tip including a first section secured to the distal end of said inner shaft, a flexible arm that extends from the first section, and an opening disposed between the first section of said clamping tip and the flexible arm of said clamping tip wherein said clamping tip has a distal end having a closed end defining at least a portion of a perimeter of said opening;

a knob coupled with a proximal end of said inner shaft, said knob being rotatable in a first direction for extending said clamping tip from the distal end of said outer shaft and in a second direction for retracting said clamping tip into the elongated opening at the distal end of said outer shaft so as to compress the flexible arm of said clamping tip toward the first section of said clamping tip.

15. The tool as claimed in claim 14, further comprising a stabilizing rod being securable by said clamping tip.

16. The tool as claimed in claim 15, wherein said stabilizing rod has first and second ends with at least one of the first and second ends having a reduced diameter relative to a remainder of said stabilizing rod.

17. The tool as claimed in claim 16, wherein the reduced diameter end of said stabilizing rod has a spherical surface.