Matrix implant

• US 9,662,157 B2
• Filed: 09/18/2015
• Issued: 05/30/2017
• Est. Priority Date: 09/18/2014
• Status: Active Grant

• Current Assignee: SI-Bone, Incorporated
• Original Assignee: SI-Bone, Incorporated
• Inventors: Yerby, Scott A., Schneider, Bret W., Simon, Roxanne, Lindsey, Derek
• Primary Examiner(s): Robert, Eduardo C
• Assistant Examiner(s): Eckman, Michelle C
• Application Number:
  US14/859,005
• Publication Number:
  US 20160081809A1
• Time in Patent Office: 620 Days
• Field of Search: 606247-249, 623 1711, 623 1716
• CPC Class Codes: A61B 17/7055 connected to sacrum, pelvis or skull
• CPC Class Codes: A61B 17/84 Fasteners therefor or fasteners being internal fixation devices
• CPC Class Codes: A61F 2/44 for the spine, e.g. vertebrae, spinal discs
• CPC Class Codes: A61F 2002/2839 Bone plugs or bone graft dowels
• CPC Class Codes: A61F 2002/30115 circular-O-shaped
• CPC Class Codes: A61F 2002/30149 pentagonal
• CPC Class Codes: A61F 2002/30154 square
• CPC Class Codes: A61F 2002/30156 triangular
• CPC Class Codes: A61F 2002/30171 rosette- or star-shaped
• CPC Class Codes: A61F 2002/30604 modular
• CPC Class Codes: A61F 2002/30995 for sacro-iliac joints
• CPC Class Codes: A61F 2002/4495 having a fabric structure, e.g. made from wires or fibres

Abstract

Implants for the fusion or fixation of two bone segments are described. For example, the implants can be used for the fusion or fixation of the sacroiliac joint. The implants can have a matrix structure, have a rectilinear cross-sectional area, and have a curvature.

Claims

1. A modular implant for the fixation or fusion of the SI-Joint, the modular implant comprising:

a distal portion comprising a frame, the frame joined to a distal guide pin receptacle and to a plurality of transverse support struts arranged in a rectilinear configuration;

a proximal portion comprising a frame joined to a proximal guide pin receptacle and to a plurality of transverse support struts arranged in a rectilinear configuration; and

at least one repeating internal portion comprising;

a plurality of apex struts joined together by oblique support struts arranged in an oblique configuration between the apex struts,

a plurality of transverse support struts arranged perpendicularly to the apex struts, the plurality of transverse support struts arranged in a rectilinear configuration at both a proximal end and a distal end of the repeating internal portion, and

an internal guide pin receptacle secured to the oblique support struts and/or transverse support struts and aligned with both the distal guide pin receptacle and the proximal guide pin receptacle;

wherein the at least one internal repeating portion is positioned between the distal portion and the proximal portion such that the transverse support struts of the distal portion are aligned with a first set of transverse support struts of the repeating internal portion and the transverse support struts of the proximal portion are aligned with a second set of transverse support struts of a repeating internal portion.

2. The modular implant of claim 1, wherein the oblique supports struts are arranged in an “

X”

configuration.

3. The modular implant of claim 1, wherein the oblique supports struts are arranged in a non-overlapping diagonal configuration.

4. A modular implant for the fixation or fusion of the SI-Joint, the modular implant comprising:

a distal portion comprising a frame, the frame joined to a distal guide pin receptacle and to a plurality of transverse support struts arranged in a rectilinear configuration;

a proximal portion comprising a frame joined to a proximal guide pin receptacle and to a plurality of transverse support struts arranged in a rectilinear configuration; and

at least one repeating internal portion comprising;

a plurality of apex struts joined together by oblique support struts arranged in an oblique configuration between the apex struts, and

a plurality of transverse support struts arranged perpendicularly to the apex struts, the plurality of transverse support struts arranged in a rectilinear configuration at both a proximal end and a distal end of the repeating internal portion;

wherein the at least one internal repeating portion is positioned between the distal portion and the proximal portion such that the transverse support struts of the distal portion are aligned with a first set of transverse support struts of the repeating internal portion and the transverse support struts of the proximal portion are aligned with a second set of transverse support struts of a repeating internal portion.