Bone graft harvester

Patent metadata

Field	Value
Publication number	US-11185339-B2
Application number	US-201916285637-A
Country	US
Kind code	B2
Filing date	Feb 26, 2019
Priority date	Jun 22, 2018
Publication date	Nov 30, 2021
Grant date	Nov 30, 2021

Abstract

An apparatus and methods are provided for a trephine bone graft harvester for extracting morselized bone from patients. The trephine bone graft harvester includes a bone cutter affixed to an outer hub. The bone cutter comprises a hollow tube having cylindrical wall and a distal cutting edge. A bone graft collector is sheathed within the bone cutter. The bone graft collector includes a distal scoop adjacent to the distal cutting edge of the bone cutter. The distal scoop is configured to move morselized bone away from the distal cutting edge. An inner hub is affixed to the bone graft collector and coupled with the outer hub. The inner hub includes a proximal shank configured to be engaged with a rotary tool suitable for applying torque to the inner hub.

First claim

What is claimed is:

1. A bone graft harvester for extracting morselized bone from an autograft site, the harvester comprising:
a bone cutter that includes a distal cutting edge and a proximal handle;
a bone graft collector that is sheathed within the bone cutter; and
a proximal shank comprising the bone graft collector configured to engage with a rotary tool;
an inner hub affixed to the bone graft collector;
an outer hub configured to engage with the inner hub comprising the bone graft collector, the outer hub comprising a cylindrical member, wherein an actuator is disposed in a side of the cylindrical member; and
an open-tube portion comprising a distal scoop, the distal scoop configured to retain the morselized bone within the bone graft collector, such that the morselized bone may be retrieved upon removing the bone graft collector from an interior of the bone cutter.

2. The harvester of claim 1 , wherein the outer hub and the inner hub are configured to enable removal of the bone graft collector from the interior of the bone cutter.

3. The harvester of claim 1 , wherein the bone graft collector includes pins disposed on opposite sides of the inner hub and configured to be received into slots disposed on opposite sides of the outer hub.

4. The harvester of claim 3 , wherein the pins and the slots are respectively positioned on the bone graft collector and the bone cutter such that the distal scoop comprising the bone graft collector is optimally positioned with respect to the distal cutting edge when the bone graft collector is sheathed within the bone cutter.

5. The harvester of claim 3 , wherein the pins are configured to be retained within the slots by way of snap lock portions comprising levers disposed on opposite sides of the proximal handle.

6. The harvester of claim 1 , wherein the bone cutter comprises a cylindrical wall that is joined with a body comprising the proximal handle.

7. The harvester of claim 6 , wherein the distal cutting edge comprises an angled wedge portion of the cylindrical wall and includes sharpened edges configured to morselize bone during rotation of the bone cutter.

8. The harvester of claim 1 , wherein the open-tube portion is joined with the proximal shank by way of the inner hub.

9. The harvester of claim 1 , wherein the distal scoop is configured to move the morselized bone away from the distal cutting edge during extracting bone from the autograft site.

10. A bone graft harvester, the harvester comprising:
a bone cutter including a distal cutting edge;
an outer hub affixed to a proximal end of the bone cutter;
a bone graft collector disposed within the bone cutter; and
an inner hub affixed to the bone graft collector;
the outer hub configured to engage with the inner hub, the outer hub comprising a cylindrical member, wherein an actuator is disposed in a side of the cylindrical member;
wherein an open-tube portion comprises a distal scoop, the distal scoop configured to retain morselized bone within the bone graft collector.

11. The harvester of claim 10 , wherein the inner hub is configured to allow removal of the bone graft collector from an interior of the bone cutter, such that the morselized bone may be retrieved from the bone graft collector.

12. The harvester of claim 10 , wherein the distal scoop is configured to retain the morselized bone within an interior of the bone cutter, the distal scoop facilitating retrieval of the morselized bone after removal of the bone graft collector from within the bone cutter.

13. The harvester of claim 10 , wherein the inner hub includes a proximal shank that is configured to be engaged with a rotary tool suitable for applying torque to the inner hub, and wherein the inner hub and the outer hub are configured to cooperatively convey torque from the rotary tool to the bone graft collector and the bone cutter.

14. The harvester of claim 13 , wherein the distal cutting edge is configured to morselize bone during rotation of the bone cutter.

Assignees

• In2Bones Usa Llc

Inventors

• Perez Arley
• Wahl Rebecca Hawkins

Classifications

• A61B2017/00969

  used for transplantation · CPC title

• A61B17/1637

  Hollow drills or saws producing a curved cut, e.g. cylindrical (A61B10/025, A61B17/1695 take precedence) · CPC title

• A61F2/4601

  for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity · CPC title

• A61F2002/4619

  for extraction · CPC title

• A61B17/1635 Primary

  for grafts, harvesting or transplants · CPC title