Method for implanting a rod implant along a spine of a patient

Patent metadata

Field	Value
Publication number	US-2016015433-A1
Application number	US-201514868754-A
Country	US
Kind code	A1
Filing date	Sep 29, 2015
Priority date	Feb 27, 2004
Publication date	Jan 21, 2016
Grant date	—

Abstract

A tool set for implanting a rod in a human spine in conjunction with bone screws. The tool set includes a pair of end guide tools that receive opposite ends of the rod in channels and under manipulation by a surgeon facilitate transport of the rod toward the bone screws attached to the guide tools. Intermediate guide tools having guiding pass through slots are utilized to guide intermediate locations along the rod toward associated bone screws. An attachment structure operably connects the guide tools to the bone screws. The guide tools each include a lower guide and advancement structure to allow a closure top with mating structure to be rotated and driven downward against the rod and to cooperate with similar structure in the bone screw to seat and lock the rod therein. A method utilizing the tool set allows a surgeon to percutaneously implant the rod in the patient.

First claim

1 . A bone anchor assembly comprising:
a receiver comprising:
a rod-receiving channel distally extending from a proximal end of the receiver; and
a lateral radiused groove near the proximal end of the receiver; and
a closure, wherein the lateral radiused groove remains spaced from, and laterally located with respect to, the closure when the closure closes the rod-receiving channel of the receiver.

2 . The bone anchor assembly of claim 1 , wherein the lateral radiused groove is defined in an external curved surface of the receiver.

3 . The bone anchor assembly of claim 2 , wherein the external curved surface is curved about a longitudinal axis of the receiver.

4 . The bone anchor assembly of claim 1 , wherein the lateral radiused groove extends from the rod-receiving channel.

5 . The bone anchor assembly of claim 4 , wherein the lateral radiused groove extends perpendicularly to a longitudinal axis of the receiver.

6 . The bone anchor assembly of claim 5 , wherein the longitudinal axis intersects a center of the proximal end of the receiver and a center of a distal end of the receiver.

7 . The bone anchor assembly of claim 1 , wherein the closure is movable relative to the receiver.

8 . The bone anchor assembly of claim 7 , wherein:
the receiver comprises a first threaded arrangement on an inner surface of the receiver that defines the rod-receiving channel; and the first threaded arrangement is configured to operably couple with a second threaded arrangement of the closure to close the rod-receiving channel.

9 . The bone anchor assembly of claim 8 , wherein:
the receiver comprises a first arm and a second arm extending proximally from a base of the receiver, the first arm and the second arm comprising the inner surface and defining the rod-receiving channel.

10 . The bone anchor assembly of claim 7 , wherein the closure is translatable relative to the receiver while in physical contact with the receiver.

11 . The bone anchor assembly of claim 7 , wherein the closure is rotatable relative to the receiver while in physical contact with the receiver.

12 . The bone anchor assembly of claim 1 , further comprising an anchoring member coupled to a distal end of the receiver.

13 . The bone anchor assembly of claim 1 , wherein the bone anchor assembly comprises a bone screw.

14 . A bone anchor assembly comprising:
a receiver comprising a lateral radiused groove near a proximal end of the receiver; and a rod-securing member located medial to, and spaced from, the lateral radiused groove when the rod-securing member secures a rod to the receiver.

15 . The bone anchor assembly of claim 14 , wherein the lateral radiused groove is defined in an external curved surface of the receiver.

16 . The bone anchor assembly of claim 15 , wherein the external curved surface is curved about a longitudinal axis of the receiver.

17 . The bone anchor assembly of claim 14 , wherein the lateral radiused groove extends perpendicularly to a longitudinal axis of the receiver.

18 . The bone anchor assembly of claim 17 , wherein the longitudinal axis intersects a center of the proximal end of the receiver and a center of a distal end of the receiver.

19 . The bone anchor assembly of claim 14 , wherein:
the receiver further comprises a rod-receiving channel extending from the proximal end of the receiver.

20 . The bone anchor assembly of claim 19 , wherein the lateral radiused groove extends from the rod-receiving channel.

21 . The bone anchor assembly of claim 19 , wherein:
the receiver comprises a first threaded arrangement on an inner surface of the receiver that defines the rod-receiving channel; and the first threaded arrangement is configured to operably couple with a second threaded arrangement of the rod-securing member to secure the rod in the rod-receiving channel.

22 . The bone anchor assembly of claim 21 , wherein:
the receiver comprises a first arm and a second arm extending proximally from a base of the receiver, the first arm and the second arm comprising the inner surface and defining the rod-receiving channel.

23 . The bone anchor assembly of claim 14 , wherein the rod-securing member is translatable relative to the receiver while in physical contact with the receiver.

24 . The bone anchor assembly of claim 14 , wherein the rod-securing member is rotatable relative to the receiver while in physical contact with the receiver.

25 . The bone anchor assembly of claim 14 , further comprising an anchoring member coupled to a distal end of the receiver.

26 . The bone anchor assembly of claim 14 , wherein the bone anchor assembly comprises a bone screw.

Assignees

• Jackson Roger P

Inventors

• Jackson Roger P

Classifications

• A61B17/7089

  wherein insertion is along an arcuate path · CPC title

• A61B17/7076

  for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation · CPC title

• A61B2017/564

  Methods for bone or joint treatment · CPC title

• A61B17/7082

  for driving, i.e. rotating, screws or screw parts specially adapted for spinal fixation, e.g. for driving polyaxial or tulip-headed screws · CPC title

• A61B17/7037

  wherein pivoting is blocked when the rod is clamped · CPC title