Continuous phase composite for musculoskeletal repair

Patent metadata

Field	Value
Publication number	US-9456905-B2
Application number	US-201414223884-A
Country	US
Kind code	B2
Filing date	Mar 24, 2014
Priority date	Dec 8, 2004
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

A composite material for positioning in the anatomy to form a selected function therein. The composite may be resorbable over a selected period of time. The composite may allow for selected bone ingrowth as absorption of the composite occurs.

First claim

What is claimed is:

1. A resorbable implant, comprising:
a single member comprising a continuous formation, comprising a plurality of continuous channels forming a first and second sub-plurality of a plurality of pores of a porous first material resorbable into an anatomy at a first rate to allow bone ingrowth; and
a second material that is a resorbable polymer for resorbing into an anatomy at a second rate less than the first rate to support the bone ingrowth such that the resorbable polymer defines a support for the bone ingrowth to maintain a selected strength of the member for a predetermined time period; wherein the first material and the second material are distinct and separately combined into the single member by positioning the second material within a structure of the formation of the first material, so as to substantially fill at least the first sub-plurality of the plurality of pores of the porous material.

2. The resorbable implant of claim 1 , wherein the first sub-plurality of the plurality of pores has a macroporosity of a first average size that is larger than the second sub-plurality of the plurality of pores having a microporosity.

3. The resorbable implant of claim 1 , wherein the member is a composite comprising a porous matrix formed with the first material comprising an absorbable ceramic and the second material comprising a polymer injected into the first sub-plurality of pores in the porous matrix;
wherein the second sub-plurality of pores allows fluids to flow into an interior of the member.

4. The resorbable implant of claim 3 , wherein the porous matrix comprises a structure of calcium carbonate defining the plurality of pores;
wherein inner walls of the first sub-plurality of pores and the second sub-plurality of pores are substantially coated with a hydroxyapatite.

5. The resorbable implant of claim 3 , wherein the second sub-plurality of pores includes an average pore size of less than about 1 μm;
wherein the fluids flow through the second sub-plurality of pores to allow a degradation of the composite when in an anatomy.

6. The resorbable implant of claim 1 , wherein the second material comprises a polymer chosen from polylactic acid, polyglycolic acid, and combinations thereof.

7. The resorbable implant of claim 1 , wherein the continuous channels extend from a first surface of the structure to a second surface of the structure.

8. The resorbable implant of claim 1 , wherein the second material is about 55 wt % to about 65 wt % of the single member.

9. A single member resorbable implant, comprising:
a continuous formation of a first material resorbable into an anatomy at a first rate to allow bone ingrowth, wherein the first material has a first plurality of channels having a first average size and a second plurality of channels having a second average size that is smaller than the first average size; and
a second material that is a resorbable polymer for resorbing into an anatomy at a second rate less than the first rate to support the bone ingrowth such that the resorbable polymer defines a support for the bone ingrowth to maintain a selected strength of the member for a predetermined time period; wherein the first material and the second material are distinct and separately combined into the single member by positioning the second material within a structure of the formation of the first material.

10. The single member resorbable implant of claim 9 , wherein the second material is positioned in the first plurality of channels.

11. The single member resorbable implant of claim 9 , wherein the second plurality of channels remain open.

12. The single member resorbable implant of claim 9 , wherein the second material is about 55 wt % to about 65 wt % of the single member.

13. The single member resorbable implant of claim 9 , wherein the second average size of the second plurality of channels is about 0.01 μm to about 1 μm.

14. The single member resorbable implant of claim 9 , wherein the second material is a polymer chosen from polylactic acid, polyglycolic acid, and combinations thereof.

Assignees

• Biomet Mfg Llc

Inventors

• Borden Mark D
• Hernandez Joseph M
• Shors Edwin C

Classifications

• A61F2002/30593

  hollow · CPC title

• A61F2250/003

  differing in adsorbability or resorbability, i.e. in adsorption or resorption time · CPC title

• A61L27/46

  with phosphorus-containing inorganic fillers · CPC title

• A61F2002/30156

  triangular · CPC title

• A61F2/4202

  for ankles · CPC title