Bone cleaning assembly with a rotating cutter that is disposed in a rotating shaving tube that rotates independently of the rotating cutter

Patent metadata

Field	Value
Publication number	US-10034673-B2
Application number	US-201715627488-A
Country	US
Kind code	B2
Filing date	Jun 20, 2017
Priority date	Dec 29, 2011
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

A cleaning module for cleaning bone stock used in surgical procedures. The cleaning module includes a shell. The shell defines a void space to receive the bone stock. A cutter is rotating mounted in the void space. A shaving tube, also able to rotate, is coaxially disposed about the cutter. The cutter and shaving tube have complementary edges. A drive assembly rotates the cutter and shaving tube at different speeds, at different times or in different directions relative to the cutter. As a result of the rotation of the cutter and shaving tube soft tissue adhering to the bone stock is cut away from the bone stock by the relative rotating of the cutting edges of the cutter and shaving tube.

First claim

What is claimed is:

1. An assembly for cleaning bone stock, said assembly comprising:
a shell defining a void space for receiving the bone stock to be cleaned;
a shaving tube having a window that is defined by at least one shaving edge, said shaving tube being rotatably mounted in the shell void space;
a cutter disposed in the shell void space so as to be rotatably disposed in said shaving tube adjacent the at least one shaving edge of said shaving tube such that when said cutter is rotated, said cutter and shaving tube shaving edge cooperate to cut soft tissue from the bone stock; and
a drive assembly connected to said shaving tube, and said cutter for actuating said shaving tube and said cutter and said drive assembly is adapted to, when actuating said shaving tube and said cutter, cause said shaving tube and cutter to rotate at different speeds or directions relative to each other or to cause said cutter to be rotated continually while said shaving tube rotates periodically.

2. The assembly of claim 1 , wherein said cutter includes a plurality of cutting edges that are positioned to rotate adjacent the at least one said shaving edge of said shaving tube so that the at least one shaving edge and the plurality of cutting edges cooperate to cut the soft tissue from the bone stock.

3. The assembly of claim 1 , wherein said cutter is formed to have plural flutes that define plural cutting edges of said cutter that are positioned to rotate adjacent the at least one said shaving edge of said shaving tube so that least one shaving edge and the plurality of cutting edges cooperate to cut the soft tissue from the bone stock and said flutes are shaped and said cutter rotates relative to said shaving tube so that, as said cutter rotates, cut tissue is augured upwardly between said shaving tube and said cutter.

4. The assembly of claim 3 , wherein:
said shaving tube has a top end; and
a structural member defining a collecting surface is located adjacent the top end of said shaving tube for receiving the cut tissue augered between said shaving tube and said cutter.

5. The assembly of claim 3 , wherein:
said shaving tube has a top end;
a structural member defining a collecting surface is located adjacent the top end of said shaving tube for receiving the cut tissue augered between said shaving tube and said cutter; and
a cap is attached to said shell and disposed over the collecting surface.

6. The assembly of claim 3 , wherein:
said shaving tube is further formed to have at least one debris window through which the cut tissue passes that is separate from the window defined by the at least one shaving edge; and
a debris catch is mounted to said shaving tube to receive the tissue that passes through the at least one shaving tube debris window.

7. The assembly of claim 1 , wherein a guide is moveably disposed in said shell to move between a disengaged position and an engaged position and is configured to, when moving from the disengaged position to the engage position, urge bone stock towards the window of said shaving tube and said cutter.

8. The assembly of claim 7 , wherein said guide is an arm formed to have a containment wall that defines an enclosed space in which the bone stock is placed, and that surrounds said shaving tube and said cutter.

9. The assembly of claim 1 , wherein a tumble plate is seated in the void space of said shell such that the bone stock sits on top of said tumble plate and said tumble plate is able to rotate so as to reorient the bone stock.

10. The assembly of claim 9 , wherein said tumble plate is seated in the void space of said shell such that the bone stock sits on top of said tumble plate and said tumble plate is able to rotate so as to reorient the bone stock and said tumble plate is connected to said cutter for simultaneous rotation with said cutter.

11. The assembly of claim 1 , wherein said drive assembly is adapted to transfer torque from a motor to said cutter and said shaving tube.

12. The assembly of claim 11 , wherein:
said drive assembly is at least partially attached to said shell; and
attached to said shell is at least one lock feature that is configured to cooperate with a complementary lock feature attached to a base unit that includes a motor able to actuate said drive assembly.

13. The assembly of claim 1 , wherein said drive assembly is configured to continually rotate the cutter while periodically rotating said shaving tube.

14. The assembly of claim 1 , wherein said drive assembly is configured to rotate said shaving tube in one of the following motions relative to the rotation of said cutter: the same direction; the reverse direction; or an oscillatory motion.

15. The assembly of claim 1 , wherein said shell is formed with at least one lock feature configured cooperate with a complementary lock feature attached to a base unit that includes a motor able to actuate said drive assembly.

16. An assembly for cleaning bone stock, said assembly comprising:
a shell defining a void space for receiving the bone stock to be cleaned;
a cutter mounted in the shell void space for rotation, said cutter having at least one cutting edge;
a shaving tube rotatably mounted in the shell void space so as to extend around said cutter, said shaving tube having a window that is defined by at least one shaving edge, such that said cutter and said shaving tube are positioned so that the at least one cutting edge of said cutter and said shaving edge of said shaving tube cooperate to cut soft tissue from the bone stock and, wherein said shaving tube is rotatably mounted in the shell void space;
a guide moveably disposed in said shell to move between a disengaged position and an engaged position and is configured to, when moving from the disengaged position to the engaged position, urge bone stock towards said window of said shaving tube and said cutter; and
a drive assembly connected to said cutter, said shaving tube and said guide for actuating said cutter, said shaving tube and said guide, wherein said drive assembly is adapted to, when actuating said shaving tube and said cutter, cause said shaving tube and said cutter to rotate at different speeds or directions relative to each other or to cause said cutter to be rotated continually while said shaving tube rotates periodically and said drive assembly is further configured to cyclically move said guide between the disengaged and engaged positions of said guide.

17. The assembly of claim 16 , wherein said cutter is formed to have plural flutes that define plural cutting edges of said cutter that are positioned to rotate adjacent the at least one said shaving edge of said shaving tube so that least one shaving edge and the plurality of cutting edges cooperate to cut the soft tissue from the bone stock and said flutes are shaped and said cutter rotates relative to said shaving tube so that, as said cutter rotates, cut tissue is augured upwardly between said shaving tube and said cutter.

18. The assembly of claim 17 , wherein:
said shaving tube has a top end; and
a structural member defining a collecting surface is located adjacent the top end of said shaving tube for receiving the cut tissue augered between said shaving tube and said cutter.

19. The assembly of claim 16 , wherein said guide is an arm formed to have a containment wall that defines an enclosed space in which the bone stock is placed, and that surrounds said shaving tube and said cutter.

20. The assembly of claim 16 , wherein said guide is formed to have a press block that

Assignees

• Stryker Corp

Inventors

• Lynch Robert E
• Diehl Eric K
• Horton Iv John Coleman
• Keilers Cyril A
• Bernero John P

Classifications

• A61F2002/4646

  Devices for cleaning bone graft · 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

• A61B17/1635 Primary

  for grafts, harvesting or transplants · CPC title