Devices and methods for inserting a vertebral fixation member

Patent metadata

Field	Value
Publication number	US-10463405-B2
Application number	US-201715662995-A
Country	US
Kind code	B2
Filing date	Jul 28, 2017
Priority date	Mar 27, 2009
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

Devices, systems, and methods for inserting a vertebral stabilization member, such as a rod. The insertion device includes an outer guide tube, a pin assembly including a pin and a pusher member extending therethrough. The insertion device is configured to actuate a rod between a first orientation and a second orientation angled with respect to the first orientation in order to position the rod in an appropriate location for attachment to bone.

First claim

What is claimed is:

1. A minimally invasive vertebral stabilization system, comprising:
a first anchor deliverable to a vertebral body of a patient through a first opening with at least one extended tab connected thereto, the at least one extended tab defining an open central portion and a central longitudinal axis, wherein the at least one extended tab includes a first extension element integrally connected to the first anchor at a break point;
an elongate stabilization member extending from a proximal end to a distal end; and
a stabilization member insertion device releasably and rotatably linked to the elongate stabilization member, the stabilization member insertion device comprising an outer guide tube, having a longitudinal axis and a central longitudinal opening extending therethrough, a clamping element, and a pin assembly, wherein the pin assembly includes a pin extending through the central longitudinal opening of the outer guide tube, the pin having a first end engaged with an actuation member and a second end configured to engage the clamping element, such that when the actuation member is rotated, the pin linearly moves along the direction of the longitudinal axis and engages a portion of the clamping element,
wherein the elongate stabilization member is deliverable in a first orientation substantially parallel to the central longitudinal axis of the open central portion; and, independent of movement along the central longitudinal axis, the elongate stabilization member is rotatably actuatable by the stabilization member insertion device to extend in a second orientation angled with respect to the first orientation to position the stabilization member in relation to the first anchor,
wherein the elongate stabilization member is cantilevered off the stabilization member insertion device such that at least a portion of the elongate stabilization member is positioned outside the at least one extended tab.

2. The system of claim 1 , wherein the outer guide tube having an elongate body extending from a first end to a second end, and
a pusher member extending through the central longitudinal opening of the outer guide tube having a first end connected to a handle and a second end connected to the clamping element, wherein the stabilization member insertion device is configured and dimensioned to be received within the open central portion such that the insertion device is moveable along the central longitudinal axis.

3. The system of claim 2 , wherein the elongate stabilization member is releasably clampable to the insertion device between first and second clamping members at a clamping location spaced from a midline of the elongate stabilization member.

4. The system of claim 3 , wherein the first clamping member includes a first generally cylindrical protrusion insertable into a distal portion of the insertion device and the second clamping member includes a second generally cylindrical protrusion insertable into the distal portion of the insertion device, and wherein the first and second clamping members are coupled by a pin extending through a first and second opening in the first and second clamping members, respectively.

5. The system of claim 1 , wherein the proximal end of the elongate stabilization member is not contained within the open central portion in the first orientation.

6. The system of claim 1 , wherein the at least one extended tab includes a first extension element connected to the first anchor at a break point and a second extension element connected to the first extension element.

7. The system of claim 1 , wherein the at least one extended tab includes a pair of diametrically opposed extended tabs defining opposed longitudinal openings, the longitudinal openings providing lateral access to the open central portion.

8. The system of claim 7 , wherein a portion of the elongate stabilization member is extendable through the longitudinal openings.

9. A minimally invasive vertebral stabilization system, comprising:
an anchor deliverable to a vertebral body of a patient with at least one extended tab connected thereto, the at least one extended tab including a first extension element connected to the first anchor at a break point and a second extension element connected to the first extension element, and the at least one extended tab defining an open central portion and a central longitudinal axis;
an elongate stabilization member extending from a proximal end to a distal end; and
a stabilization member insertion device releasably and rotatably linked to the proximal end of the elongate stabilization member, the stabilization member insertion device including:
an outer guide tube having an elongate body extending from a first end to a second end and having a central longitudinal opening extending therethrough,
a clamping element,
a pin assembly extending through the central longitudinal opening of the outer guide tube, the pin assembly having a first end engaged with an actuation member and a second end configured to engage the clamping element, such that when the actuation member is rotated, the pin assembly linearly moves along the direction of the longitudinal axis and engages a portion of the clamping element, and
a pusher member extending through the central longitudinal opening of the outer guide tube having a first end connected to a handle and a second end connected to the clamping element,
wherein the stabilization member insertion device is configured and dimensioned to be received within the open central portion such that the insertion device is moveable along the central longitudinal axis,

wherein the elongate stabilization member is cantilevered off the stabilization member insertion device such that at least a portion of the elongate stabilization member is positioned outside the second extension element of the at least one extended tab, and
wherein the elongate stabilization member is deliverable in a first orientation substantially parallel to the central longitudinal axis of the open central portion; and, independent of movement along the central longitudinal axis, the elongate stabilization member is rotatably actuatable by the stabilization member insertion device to extend in a second orientation angled with respect to the first orientation to position the stabilization member proximate to the anchor.

Assignees

• Globus Medical Inc

Inventors

• Cryder Joel
• Bechtel Matthew
• Iott Andrew
• Karpowicz Edward
• Cahill Douglas
• Rightler Robert

Classifications

• A61B17/0206

  with antagonistic arms as supports for retractor elements · CPC title

• A61B17/708

  with tubular extensions coaxially mounted on the bone anchors · CPC title

• A61B17/7004

  with a cross-section which varies along its length (A61B17/7019 takes precedence) · CPC title

• A61B17/7085 Primary

  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 title

• A61B17/7086

  Rod reducers, i.e. devices providing a mechanical advantage to allow a user to force a rod into or onto an anchor head other than by means of a rod-to-bone anchor locking element; rod removers · CPC title