Bone cleaning assembly with a rotating cutting flute that is surrounded by a rotating shaving tube

Patent metadata

Field	Value
Publication number	US-9687361-B2
Application number	US-201414311674-A
Country	US
Kind code	B2
Filing date	Jun 23, 2014
Priority date	Dec 29, 2011
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

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 located within the void space. A shaving tube is coaxially disposed about the cutter to move at different speeds and/or directions relative to the cutter. When actuated, the cutter rotates to clean the bone stock by cutting soft tissue from the bone stock. A tumble plate reorients the bone stock, while an arm moves across the tumble plate from a disengaged position to an engaged position to press the bone stock into the cutter through a window in the shaving tube. A drive assembly actuates the cutter, shaving tube, arm and tumble plate.

First claim

What is claimed is:

1. A bone stock cleaning assembly, said assembly including:
a shell, said shell having a base and a top located above said base so as to have between said base and said top a void space;
a cutter formed with a plurality of cutting edges that is rotatably mounted to said shell base so as to be disposed in the shell void space;
a shaving tube disposed around said cutter, said shaving tube being formed to have at least one shaver edge that is located adjacent said cutting edges of said cutter; and
an arm disposed over said shell base and shaped to have a closed containment wall that defines a containment space wherein: said arm is disposed in the shell void space so said cutter and said shaving tube are disposed in the containment space and said arm is pivotally mounted to said base so that said arm is able to move between an engaged position in which a portion of the containment wall presses bone stock in the containment space towards said cutting edges of said cutter and a disengaged position in which the portion of the containment wall is spaced further away from said cutter than when said arm is in the engaged position.

2. The bone stock cleaning assembly of claim 1 , wherein:
said shaving tube is formed to define a window and the shaver edge at least partially defines the window; and
when said arm is in the engaged position, the portion of the containment wall that presses bone stock is located adjacent the window of said shaving tube so as to press bone stock in the containment space through the window of said shaving tube against the cutting edges of said cutter.

3. The bone stock cleaning assembly of claim 1 , wherein:
said shaving tube is formed to define a window and is formed to define two spaced apart shaver edges wherein, the shaver edges at least partially define the window; and
when said arm is in the engaged position, the portion of the containment wall that presses bone stock is located adjacent the window of said shaving tube so as to press bone stock in the containment space through the window against the cutting edges of said cutter.

4. The bone stock cleaning assembly of claim 1 , wherein:
said top includes a collecting surface and said collecting surface defines an opening located above said cutter and said shaving tube into which tissue removed by said cutter and said shaving tube is discharged onto the collecting surface; and
a cap is disposed over said top so as to extend over the collecting surface.

5. The bone stock cleaning assembly of claim 1 , further including a tumble plate rotatably mounted to said shell base, wherein said tumble plate extends around said shaving tube and is able to rotate independently of the movement of said arm.

6. The bone stock cleaning assembly of claim 1 , further including a tumble plate rotatably mounted to said shell base, wherein said tumble plate extends around said shaving tube and is connected to said cutter so as to rotate with said cutter so that said tumble plate moves independently of said arm.

7. The bone stock cleaning assembly of claim 1 , wherein:
the containment wall has an inner surface that defines the containment space; and
the containment wall includes a press block that extends inwardly from the inner surface of the containment wall, said press block having a face a surface that is located inwardly of the inner surface of said containment wall and being positioned so that, when said arm is in the engaged position, the face of said press block is the portion of the containment wall that presses bone stock towards said cutting edges of said cutter.

8. The bone stock cleaning assembly of claim 1 , wherein said shaving tube is rotatably mounted to the base of said shell to rotate independently of said cutter.

9. A bone stock cleaning assembly, said assembly including:
a shell, said shell having a base and a top located above said base so as to have between said base and top a void space;
a cutter formed with a plurality of cutting edges that is rotatably mounted to said shell base so as to be disposed in the shell void space;
a shaving tube disposed around said cutter, said shaving tube being formed to have at least one shaver edge that is located adjacent said cutting edges of said cutter; add
an arm disposed over said shell base and shaped to have a closed containment wall with an inner surface that defines a containment space and a press block that extends inwardly from the inner surface of said containment wall into the containment space wherein, said arm is disposed in the shell void space so said cutter and said shaving tube are disposed in the containment space and said arm is pivotally mounted to said shell base so that said arm is able to move between an engaged position in which said press block is located adjacent said cutter so as to press bone stock in the containment space towards said cutting edges of said cutter and a disengaged position in which said press block is spaced further away from said cutter than when said arm is in the engaged position.

10. The bone stock cleaning assembly of claim 9 , wherein:
said shaving tube is formed to define a window and the shaver edge at least partially defines the window; and
when said arm is in the engaged position, said press block is located adjacent the window of said shaving tube so as to press bone stock in the containment space through the window against the cutting edges of said cutter.

11. The bone stock cleaning assembly of claim 9 , wherein said arm is further formed so that:
the containment wall is shaped to define a corner where adjacent sections of the containment wall meet; and
said press block extends inwardly from the corner of said containment wall so that, when the arm is the engaged position, the corner from which said press block extends is located adjacent said cutter and, when the arm is in the disengaged position, the corner is spaced from said cutter.

12. The bone stock cleaning assembly of claim 9 , wherein said arm is further formed so that said press block has a curved face and is further positioned so that, when said arm is in the engage position, the curved face of said press block is the portion of said press block that is directed towards said cutting edges of said cutter.

13. The bone stock cleaning assembly of claim 9 , wherein said shaving tube is rotatably mounted to the base of said shell to rotate independently of said cutter.

14. The bone stock cleaning assembly of claim 9 , wherein:
said shaving tube is formed to define a window and the shaver edge at least partially defines the window;
said arm is shaped so that: the containment wall is shaped to define a corner where adjacent sections of the containment wall meet; and said press block extends inwardly from the corner or said containment wall so that, when the arm is the engaged position, the press block is located adjacent the window of said shaving tube, and, when the arm is in the disengaged position, the press block is spaced from the window of said shaving tube.

15. A bone stock cleaning assembly, said assembly including:
a shell, said shell having a base and a top located above said base so as to define between said base and said top a void space;
a cutter rotatably mounted to the base of said shell so as to be disposed in the shell void space where, said cutter is formed with a plurality of cutting edges;
a shaving tube disposed around said cutter, said shaving tube being formed to have at least one shaver edge that is located adjacent said cutting edges of said cutter so as to expose a section of said cutter, wherein said shaving tube is rotatably mo

Assignees

• Stryker Corp

Inventors

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

Classifications

• A61F2002/4646

  Devices for cleaning bone graft · CPC title

• A61B17/1635 Primary

  for grafts, harvesting or transplants · 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