System and method of bone processing

Patent metadata

Field	Value
Publication number	US-11219537-B2
Application number	US-201916721041-A
Country	US
Kind code	B2
Filing date	Dec 19, 2019
Priority date	Jan 7, 2010
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A system and method of processing bone is disclosed. A tissue separator is utilized to separate tissue comprising at least one of muscle, periosteum and connective tissue from bone in a safe, sterile and efficient manner. In one aspect, the particle reducer can include an impeller positioned with respect to a cutting surface on a drum. At least one of the impeller and the drum is rotated by a power source such that harvested tissue frictionally engages the cutting surface. In another aspect, a source of pressurized fluid can be directed at tissue to separate bone from non-bone tissue.

First claim

What is claimed is:

1. A bone denuder comprising:
a cutting drum having a cutting surface;
an impeller positioned within the cutting drum, wherein the impeller is a brushed impeller including a plurality of bristles;
a shaft coupled to the impeller to rotate therewith; and
a power source coupled to the shaft to provide rotational force thereto.

2. The bone denuder of claim 1 , wherein the cutting drum includes an interior cutting surface.

3. The bone denuder of claim 2 , wherein the cutting surface is formed of a plurality of perforations.

4. The bone denuder of claim 2 , wherein the cutting surface is formed of at least one raised cutting edge.

5. The bone denuder of claim 1 , wherein the cutting drum has inwardly extending bristles secured thereto.

6. The bone denuder of claim 5 , wherein the inwardly extending bristles terminate at the impeller.

7. A tissue separator coupleable to a power source for use in separating non-bone tissue from a bone, comprising:
an external casing;
a cutting drum positioned within the external casing; and
an impeller positioned within the cutting drum;
wherein a plurality of bristles are positioned within the cutting drum.

8. The tissue separator of claim 7 , wherein the plurality of bristles extend from the impeller.

9. The tissue separator of claim 7 , wherein the cutting drum is configured to rotate with respect to the impeller.

10. The tissue separator of claim 7 , wherein the plurality of bristles extend from the cutting drum.

11. The tissue separator of claim 10 , wherein the plurality of bristles extending from the cutting drum terminate at the impeller.

12. The tissue separator of claim 11 , wherein the impeller includes bristles.

13. The tissue separator of claim 7 , wherein the cutting drum includes an interior cutting surface.

14. The tissue separator of claim 13 , wherein the cutting surface is formed of a plurality of perforations.

15. The tissue separator of claim 13 , wherein the cutting surface is formed of at least one raised cutting edge.

16. A bone denuder comprising:
a cutting drum having a cutting surface;
an impeller positioned within the cutting drum;
a plurality of bristles positioned within the cutting drum;
a shaft coupled to the impeller to rotate therewith; and
a power source coupled to the shaft to provide rotational force thereto.

17. The bone denuder of claim 16 , wherein the plurality of bristles extend from the cutting surface.

18. The bone denuder of claim 16 , wherein the plurality of bristles extend from the impeller.

Assignees

• Medtronic Xomed Inc

Inventors

• Koltz Michael L
• Shadeck Louis M
• Little Ii David John
• Norman Gerould Winthrop
• Oliver Dana A

Classifications

• B02C19/11

  High-speed drum mills (for separating B04B) · CPC title

• A61F2/4644 Primary

  Preparation of bone graft, bone plugs or bone dowels, e.g. grinding or milling bone material (bone material A61F2/28; disintegrating or milling devices B02C) · CPC title

• A22C17/06

  Bone-shears; Bone-crushers · CPC title

• A61F2002/4645

  Devices for grinding or milling bone material · CPC title

• A61B17/3203

  Fluid jet cutting instruments · CPC title