Expandable implant assembly

Patent metadata

Field	Value
Publication number	US-2019374348-A1
Application number	US-201916548134-A
Country	US
Kind code	A1
Filing date	Aug 22, 2019
Priority date	Mar 13, 2013
Publication date	Dec 12, 2019
Grant date	—

Abstract

An expandable implant includes a top support configured to engage a first portion of vertebral bone, a bottom support configured to engage a second portion of vertebral bone, and a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support. The control assembly includes a control member including a head and a body portion. The head includes a recess and the body portion includes at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port.

First claim

What is claimed is:

1 . An expandable implant, comprising:
a top support configured to engage a first portion of bone; a bottom support configured to engage a second portion of bone; a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support, wherein the control assembly includes a control member including a head and an access port; wherein the head includes a recess in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port; wherein the control assembly further comprises a front portion adjustably coupled to the control member and a rear portion longitudinally fixed relative to the control member.

2 . The implant of claim 1 , wherein the access port includes a pair of access ports provided on generally opposite sides of the control member.

3 . The implant of claim 2 , wherein the recess extends along a longitudinal axis defined by the control member, and wherein each access port extends from the recess in a non-perpendicular fashion relative to the longitudinal axis.

4 . The implant of claim 1 , wherein the control member comprises a threaded screw having a head and a body portion, wherein the front portion is adjustable coupled to the body portion and the rear portion is longitudinally fixed relative to the head.

5 . The implant of claim 4 , further comprising a retaining member extending through the rear portion and engaging a circumferential groove in the head of the control member.

6 . The implant of claim 5 , wherein the retaining member includes a pair of retaining members.

7 . The implant of claim 5 , wherein the retaining member extends through at least one of a top and bottom portion of the rear portion.

8 . The implant of claim 5 , wherein the retaining member extends through at least one lateral side portion of the rear portion.

9 . The implant of claim 1 , wherein the implant is generally symmetric about at least one plane extending along the control assembly.

10 . The implant of claim 1 , wherein the implant is asymmetric about at least one plane extending along the control assembly.

11 . An expandable implant, comprising:
a top support including a top surface configured to engage a first portion of bone; a bottom support including a bottom surface configured to engage a second portion of bone, wherein the top and bottom surfaces move linearly relative to each other along an adjustment axis, the adjustment axis being perpendicular to a middle plane extending between the top surface and the bottom surface, wherein each of the top surface and the bottom surface tapers relative to the middle plane to define a taper; and a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support, wherein the control assembly includes a control member having a recess and at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port.

12 . The implant of claim 11 , wherein the taper remains constant during movement of the top support relative to the bottom support.

13 . The implant of claim 12 , wherein a longitudinal axis of the implant extends perpendicular to the adjustment axis and the taper extends in a direction generally parallel to the longitudinal axis.

14 . The implant of claim 12 , wherein a longitudinal axis of the implant extends perpendicular to the adjustment axis and the taper extends in a direction generally perpendicular to the longitudinal axis.

15 . The implant of claim 11 , wherein the control assembly comprises a front portion threadingly coupled to a threaded portion of the control member and a rear portion rotatably coupled and longitudinally fixed relative to a head of the control member.

16 . The implant of claim 15 , further comprising a retaining member extending through the rear portion and engaging a circumferential groove in the head of the control member.

17 . An implant comprising,
a top support configured to engage a first portion of bone; a bottom support configured to engage a second portion of bone; a control assembly coupled to the top support and the bottom support and configured to control relative movement between the top support and the bottom support, wherein the control assembly includes:
a front portion configured to engage the top and bottom supports;
a rear portion configured to engage the top and bottom supports; and
a control member adjustably engaging the front portion and the rear portion;
wherein the head includes a recess and at least one access port in fluid communication with the recess to enable delivery of fluid to an interior of the implant via the recess and at least one access port.

18 . The implant of claim 17 , wherein the top and bottom supports define a first side portion and a second side portion each extending along a longitudinal axis of the control member, wherein the first side portion extends further away from the longitudinal axis of the control assembly than the second side portion to form an asymmetric D-shape.

19 . The implant of claim 17 , wherein a bottom surface of the top support engages a top surface of the bottom support when the implant is in a collapsed position to define one or more access apertures extending through the first and second side portions.

20 . The implant of claim 17 , further comprising at least one retaining member configured to extend through the rear portion and engage a circumferential groove in the head of the control portion.

Assignees

• Life Spine Inc

Inventors

• Butler Michael S
• Wolters Madeline
• Predick Daniel
• Shoshtaev Eugene

Classifications

• A61F2002/30556

  for adjusting thickness · CPC title

• A61F2002/30428

  made by inserting a protrusion into a slot · CPC title

• A61F2002/30579

  with mechanically expandable devices, e.g. fixation devices · CPC title

• A61F2002/30507

  using a threaded locking member, e.g. a locking screw or a set screw · CPC title

• A61F2310/00023

  Titanium or titanium-based alloys, e.g. Ti-Ni alloys · CPC title