Facet joint implants and delivery tools

• US 10,149,673 B2
• Filed: 04/15/2015
• Issued: 12/11/2018
• Est. Priority Date: 06/06/2008
• Status: Active Grant

• Current Assignee: Providence Medical Technology, Inc.
• Original Assignee: Providence Medical Technology, Inc.
• Inventors: McCormack, Bruce M., Smith, Jeffrey D.
• Primary Examiner(s): Ramana, Anu
• Application Number:
  US14/687,218
• Publication Number:
  US 20150216518A1
• Time in Patent Office: 1,336 Days
• CPC Class Codes: A61B 17/025 Joint distractors
• CPC Class Codes: A61B 17/0642 for bones, e.g. for osteosynthesis or connecting tendon to bone
• CPC Class Codes: A61B 17/1604 Chisels; Rongeurs; Punches; Stamps
• CPC Class Codes: A61B 17/1659 Surgical rasps, files, planes, or scrapers
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/1735 for rasps or chisels
• CPC Class Codes: A61B 17/1757 for the spine
• CPC Class Codes: A61B 17/7044 also having plates, staples or washers bearing on the vertebrae
• CPC Class Codes: A61B 17/7059 Cortical plates A61B17/7007, A61B17/7058 take precedence
• CPC Class Codes: A61B 17/7064 Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor
• CPC Class Codes: A61B 17/8004 with means for distracting or compressing the bone or bones
• CPC Class Codes: A61B 17/8625 Shanks, i.e. parts contacting bone tissue
• CPC Class Codes: A61B 2017/0256 for the spine
• CPC Class Codes: A61B 2090/037 with a frangible part, e.g. by reduced diameter

Abstract

A spinal joint distraction system is disclosed and may include a driver assembly with a tubular shaft, a pair of implant holder arms, an implant distractor, an internal actuator, and a distractor knob, the system also including a delivery device with a tubular shaft, a receiving assembly, and a pair of forks, where the delivery device is adapted for slidable insertion of the driver assembly, the system also including an implant, a chisel, and an injector. Several embodiments of an implant are disclosed as well a method of placing an implant.

Claims

1. A spinal joint distraction system, comprising:

a driver assembly comprising;

a first tubular shaft having a longitudinal axis; and

first and second implant engagement faces positioned on a distal end of the first tubular shaft, each face configured to engage at least a portion of a spinal implant; and

a delivery device comprising;

a second tubular shaft defining a lumen;

a receiving assembly including the lumen for receiving the driver assembly, the receiving assembly positioned on a proximal end of the second tubular shaft; and

a pair of tines extending from a distal end of the second tubular shaft, the tines adapted to penetrate a facet joint,

wherein, the second tubular shaft slidably receives the driver assembly.

2. The spinal joint distraction system of claim 1 further comprising a chisel including a shaft having a proximal end and a distal end opposite the proximal end, the distal end including a tip.

3. The spinal joint distraction system of claim 2 wherein the tip of the chisel is a single or doubly chamfered tip.

4. The spinal joint distraction system of claim 2 wherein the shaft of the chisel is adapted to be received within an inner radius of the second tubular shaft.

5. The spinal joint distraction system of claim 1 further comprising a decorticator comprising a tubular shaft portion having a distal portion with an abrasive distal end.

6. The spinal joint distraction system of claim 5 wherein the abrasive distal end of the distal portion of the tubular shaft portion of the decorticator includes a plurality of teeth.

7. The spinal joint distraction system of claim 5 wherein the tubular shaft portion of the decorticator has a shaft adapted to be received by the second tubular shaft.

8. The spinal joint distraction system of claim 1 further comprising an implant received by the implant engagement faces, the implant comprising a first surface opposite a second surface, each of the first and second surfaces including teeth.