US 8,556,903 B2Granted

Multi-directional rod reducer instrument and method

AssigneeWarsaw Orthopedic, Inc.

InventorsKeith E. Miller, James L. Cline

Life of this patent

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Abstract

A surgical reducing instrument is used to position an elongated implant element in a desired position relative to one or more of the bone anchors of a spinal implant system. The reducing instrument includes a mounting member that is mounted to the anchor and extends along a first longitudinal axis and an implant reducing member pivotally linked to the mounting member that extends along a second longitudinal axis that is offset from and variably positionable relative to the first longitudinal axis about a pivot axis. The reducing member contacts the implant element and includes a manipulation portion to move the implant element along the second longitudinal axis and can maintain contact to move the implant element toward the bone anchor when the reducing member is pivoted relative to the mounting member about the pivot axis.

Claims33

Dependent claims

A surgical instrument to position an implant element relative to a bone anchor of a spinal implant system, comprising:

an elongated extension with a distal end removably engageable to the bone anchor and extending along a first longitudinal axis from said distal end to a proximal end;
a mounting member removably mountable to said proximal end of said extension along said first longitudinal axis, said mounting member including first and second linking arms;
a reducing member extending along a second longitudinal axis, said reducing member being pivotally linked to said mounting member in side-by-side relation about a pivot axis, said reducing member including at least one leg movable distally along said second longitudinal axis for positioning in contact with the implant element, said first and second linking arms extending from a proximal end of said mounting member to said reducing member, wherein said first and second linking arms are coupled to opposite sides of said reducing member at said pivot axis;
and
a lateral displacement member engaged to one of said mounting member and said reducing member and positionable in contact with a proximal portion of the other of said mounting member and said reducing member, said lateral displacement member being operable to move said proximal portion of said reducing member away from said mounting member about said pivot axis to move a distal end of said at least one leg toward said distal end of said extension thereby positioning the implant element in a location more proximate the bone anchor.

2 more elements

A surgical instrument to position implants relative to a bone anchor of a spinal implant system, comprising:

an elongated implant element;
a mounting member removably mountable to the bone anchor along a first longitudinal axis, said mounting member including at least one linking arm extending therefrom to a pivot end in an oblique orientation to said first longitudinal axis;
an elongated extension with a distal end removably engageable to the bone anchor and body extending along said first longitudinal axis to a proximal end removably engageable with said mounting member;
and
a reducing member extending along a second longitudinal axis adjacent said mounting member, said reducing member including a housing portion and a manipulation portion mounted to and movable relative to said housing portion, said housing portion being pivotally coupled to said pivot end of said linking arm about a pivot axis, and said manipulation portion includes at least one distally extending leg contacting said implant element, wherein said at least one leg is movable distally relative to said housing portion along said second longitudinal axis for moving said implant element along said second longitudinal axis and said reducing member is pivotal relative to said mounting member about said pivot axis to change an orientation of said first and second longitudinal axes relative to one another and move said implant element transversely to said first longitudinal axis,
wherein said at least one linking arm extends from a proximal end of said mounting member to said reducing member.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/073,671Filed 28 Mar 2011 · division
Priority: 11 Apr 2006
Published: US 2011/0172723 A114 Jul 2011
Granted: 15 Oct 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A61B 17/7088
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…:…
A61B 17/7034
Screws or hooks with U-shaped head or back through which longitudinal rods pass: characterised by a lateral opening
A61B 17/7055
Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant: connected to sacrum, pelvis or skull
A61B 17/86
Fasteners therefor or fasteners being internal fixation devices: pins or screws or threaded wires; nuts therefor

Family

Application11/402,523Parent of this division · filed 11 Apr 2006
US 2011/0172723 A1Pre-grant publication · published 14 Jul 2011
US 7,927,334 B2Parent of this division
US 2007/0270867 A1Published application
US 8,556,903 B2This patent

From the US filing history. Foreign family members aren’t listed.