Rod link reducer

Patent metadata

Field	Value
Publication number	US-10869699-B2
Application number	US-201816167697-A
Country	US
Kind code	B2
Filing date	Oct 23, 2018
Priority date	Sep 14, 2016
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

Rod link reducer assemblies, systems, and methods thereof. The rod link reducer assembly provides a manipulator rod having a first end, a second end, and an elongate body extending along a body axis between the first end and the second end. A post extends outwardly from the rod. A rod manipulating joint comprise an elongate joint rod extending along a joint rod axis, a first coupling clamp disposed along the joint rod, the first coupling clamp releasably connectable to the post, and a second coupling clamp disposed along the joint rod adjacent to and rotatable about the joint rod relative to the first coupling clamp. The second coupling clamp is releasably connectable to a shaft. A biasing member is adapted to bias the second clamp against the first clamp.

First claim

What is claimed is:

1. A rod link reducer assembly comprising:
a manipulator rod having a first end, a second end, and an elongate body extending along a body axis between the first end and the second end;
a handle removably and traversely attached to the first end of the manipulator rod;
a post extending outwardly from the rod; and
a rod manipulating joint comprising:
an elongate joint rod extending along a joint rod axis;
a first coupling clamp disposed along the joint rod, the first coupling clamp releasably connectable to the post;
a second coupling clamp disposed along the joint rod adjacent to and rotatable about the joint rod relative to the first coupling clamp, the second coupling clamp releasably connectable to a second post;
a lever having a free end and a cam, distal from free end, that is rotatably connected to the joint rod, and
a first biasing member adapted to bias the second clamp against the first clamp,
at least two screw assemblies, a construct adapted to extend between the at least two screw assemblies, the two screw assemblies each include a screw and a housing, where the housing is adapted to receive a rod of the construct,
wherein the second end of the manipulator rod comprises a tip, the tip comprising a receiver adapted to releasably secure the construct therein and a receiver axis extending orthogonally to the body axis,
wherein the receiver further comprises a securing member to releasably secure the construct to the receiver, the securing member extending at an angle oblique to the receiver axis,

wherein the handle is configured to rotate the receiver about the receiver axis to align the rod of the construct,
the handle having a free end to allow a user to grip the handle.

2. The rod link reducer assembly according to claim 1 , wherein the first end of the manipulator rod comprises a faceted interface.

3. The rod link reducer assembly according to claim 2 , wherein the handle includes a faceted receiver adapted to receive the faceted interface of the first end.

4. The rod link reducer assembly according to claim 1 , wherein the post has a cylindrical cross-section.

5. The rod link reducer assembly according to claim 1 , wherein the post has a connected end connected to the manipulator rod and a free end having a larger cross-section than the connected end.

6. The rod link reducer assembly according to claim 1 , wherein each of the first coupling clamp and the second coupling clamp comprises a superior clamp portion and an inferior clamp portion movable along the joint rod relative to the superior clamp portion.

7. The rod link reducer assembly according to claim 6 , wherein each superior clamp portion comprises a first clamping surface extending at a first angle oblique to the joint rod axis and a second clamping surface extending at a second angle oblique to the joint rod axis.

8. The rod link reducer assembly according to claim 6 , wherein the superior clamp portion of the first coupling clamp comprises one of a tab and a slot and wherein the inferior clamp portion of the first coupling clamp comprises the other of a tab and a slot such that the tab engages the slot and prevents rotation of the superior clamp portion relative to the inferior clamp portion.

9. The rod link reducer assembly according to claim 1 , wherein the first coupling clamp comprises a first coupler end and wherein the second coupling clamp comprises a second coupler end adapted to releasably engage the first coupler end thereby restricting rotation of the first coupling clamp with respect to the second coupling clamp.

10. The rod link reducer assembly according to claim 1 , wherein the rod manipulating joint further comprises a second biasing member located between the first coupling clamp and the second coupling clamp, the second biasing member being adapted to bias the first coupling clamp away from the second coupling clamp.

11. The rod link reducer assembly according to claim 1 , wherein the cam is operable between a secure position wherein the first coupling clamp is non-rotatable relative to the second coupling clamp and a released position wherein the first coupling clamp is rotatable relative to the second coupling clamp.

12. A rod link reducer assembly comprising:
a manipulator rod having a first end, a second end, and an elongate body extending along a body axis between the first end and the second end;
a handle removably and transversely attachable to the first end of the manipulator rod, the handle being adapted to rotate the manipulator rod about the body axis;
a post extending outwardly from the rod between the first end and the second end; and
a rod manipulator joint releasably attachable to the post, the rod manipulator joint comprising:
a joint rod;
a first coupling clamp disposed along the joint rod and adapted to releasably retain the post;
a second coupling clamp disposed along the joint rod and rotatable relative to the first coupling clamp;
a lever having a free end and a cam, distal from free end, that is rotatably connected to the joint rod and
a locking mechanism adapted to releasably secure the first coupling clamp to the second coupling clamp,
at least two screw assemblies, a construct adapted to extend between the at least two screw assemblies, the two screw assemblies each include a screw and a housing, where the housing is adapted to receive a rod of the construct,
wherein the second end of the manipulator rod comprises a receiver configured to releasably secure the construct,
wherein the receiver comprises a set screw to releasably secure the construct, the set screw engaged with a threaded passage,

wherein the handle is configured to rotate the receiver about a receiver axis to align the rod of the construct,
the handle having a free end to allow a user to grip the handle.

13. The rod link reducer assembly according to claim 12 , wherein the locking mechanism comprises a cam lever attached to the joint rod.

14. A rod link reducer assembly comprising:
a manipulator rod comprising:
a first end comprising a faceted interface;
a second end comprising a tip; and
an elongate body extending along a body axis between the first end and the second end;

a handle removably and transversely attachable to the first end of the manipulator rod, the handle having a receiver adapted to receive the faceted interface of the first end;
a post having a connected end extending outwardly from the rod between the first end and the second end and a free end having a cross-section larger than the connected end; and
a rod manipulator joint releasably attachable to the post, the rod manipulator joint comprising:
a joint rod;
a first coupling clamp disposed along the joint rod and adapted to releasably retain the post;
a second coupling clamp disposed along the joint rod and rotatable relative to the first coupling clamp;
a biasing member disposed between the first coupling clamp and the second coupling clamp; and
a lever having a free end and rotatably connected to the joint rod,
a cam locking mechanism adapted to releasably secure the first coupling clamp to the second coupling clamp,
at least two screw assemblies, a construct adapted to extend between the at least two screw assemblies, the two screw assemblies each include a screw and a housing, where the housing is adapted to receive a rod of the construct,
wherein the tip comprises a set screw engaged with a threaded passage,
the tip further comprising a receiver adapted to releasably secure the construct therein via the set screw,

wherein the handle is configured to rotate the receiver about a receiver axis to align

Assignees

• Globus Medical Inc

Inventors

• Leff David
• Muniz Sergio
• Pham Khiem

Classifications

• A61B17/7049 Primary

  Connectors, not bearing on the vertebrae, for linking longitudinal elements together (A61B17/7055, A61B17/7053, A61B17/7019 take precedence) · CPC title

• A61B17/7079

  Tools requiring anchors to be already mounted on an implanted longitudinal or transverse element, e.g. where said element guides the anchor motion · CPC title

• A61B17/705

  for linking adjacent ends of longitudinal elements · CPC title

• A61B17/708

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

• A61B17/7086 Primary

  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