METHOD AND DEVICE FOR CERVICAL BONE MARROW ASPIRATION FOR USE IN AN ANTERIOR CERVICAL DISCECTOMY AND FUSION PROCEDURE

• US 20140257483A1
• Filed: 03/05/2013
• Published: 09/11/2014
• Est. Priority Date: 03/05/2013
• Status: Abandoned Application

• Current Assignee: Karl W. Swann
• Original Assignee: Karl W. Swann
• Inventors: Swann, Karl W.
• Application Number:
  US13/785,460
• Publication Number:
  US 20140257483A1
• Time in Patent Office: Days
• US Class Current: 623/17.11
• CPC Class Codes: A61B 10/025 for taking bone, bone marrow or cartilage samples
• CPC Class Codes: A61B 17/7061 for stabilising vertebrae or discs by improving the condition of their tissues, e.g. using implanted medication or fluid exchange intraosseous injection devices A61B17/3472
• CPC Class Codes: A61F 2/4455 for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages intervertebral discs A61F2/442
• CPC Class Codes: A61F 2/447 substantially parallelepipedal, e.g. having a rectangular or trapezoidal cross-section
• CPC Class Codes: A61F 2002/2835 Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/30593 hollow
• CPC Class Codes: A61F 2002/30904 serrated profile, i.e. saw-toothed
• CPC Class Codes: A61F 2002/3093 for promoting ingrowth of bone tissue

Abstract

Applicant provides a surgical method related to ACDF and a device for practicing the surgical method. The device comprises an aspiration needle assembly having an aspiration needle, the aspiration needle assembly adapted for receipt into a bony body at a preselected depth. Applicant'"'"'s surgical method is an anterior cervical discectomy and fusion but one in which bone marrow is aspirated from a selected cervical vertebral body, rather than the iliac crest or other area of a patient'"'"'s body. Moreover, Applicant has discovered that orienting the axis of the needle and the location of the needle such that the needle draws bone marrow from adjacent end plate rather than a center of the cervical vertebral body provides a richer bone marrow concentration, that is to say, richer in stem cells.

Claims

1. An ACDF surgical method comprising the steps of:

providing a bone marrow aspiration needle assembly, the needle assembly including an aspiration needle and having a collecting syringe engageable therewith;

providing a bone graft fusion assembly;

identifying and exposing at least a portion of the anterior vertebrae;

inserting the aspiration needle into the anterior of an exposed cervical vertebral body at a preselected depth and a preselected orientation;

aspirating, using the bone marrow aspiration needle and collecting syringe, bone marrow from a selected cervical vertebrae body;

removing at least one cervical disc;

preparing the vertebrae end plates adjacent the removed disc;

preparing, by centrifuge, from the aspirated bone marrow, a bone marrow concentrate containing stem cells and red blood cells;

applying the bone marrow concentrate to the bone graft fusion assembly; and

inserting the bone graft fusion assembly into an inter-vertebrae space defined by the prepared end plates.

2. The method of claim 1, wherein the preselected orientation is an angular orientation of the needle axis so as to bring the needle tip closer to a selected end plates than another.

3. The method of claim 2, wherein the angular orientation of the needle is between about 5°

and 40°

(preferably 10 to 30°

) with respect to the plane of a selected end plate of the vertebral body.

4. The method of claim 3, wherein the preselected depth is about 10 to 12 MM.

5. The method of claim 1, wherein the bone graft fusion assembly comprises a cage having a top and bottom plane with a lumen and an allograft shaped to fit substantially within the lumen.

6. The method of claim 5, wherein the allograft is shaped to extend above the top plane and below the bottom plane of the cage.

7. The method of claim 6, wherein the allograft extends above and below the cage in the range of 0.5 to 3 millimeters.

8. The method of claim 1, wherein the preselected orientation is an angular orientation of the needle axis so as to bring it closer to a selected end plates than another;

wherein the angular orientation of the needle is between about 10° and

40°

with respect to the plane of a selected end plate of the vertebral body;

wherein the preselected depth is about 10 to 12 mm;

wherein the bone graft fusion assembly comprises a cage having a top and bottom plane with a lumen and an allograft shaped to fit substantially within the lumen; and

wherein the allograft is shaped to extend above the top plane and below the bottom plane of the cage.

9. The method of claim 1, further comprising the step of fixing the vertebrae adjacent the inserted bone graft.

10. The method of claim 9, wherein the preselected orientation is an angular orientation of the needle axis so as to bring it closer to a selected end plates than another;

wherein the angular orientation of the needle is between about 10° and

40°

with respect to the plane of a selected end plate of the vertebral body;

wherein the preselected depth is about 10 to 12 mm;

wherein the bone graft fusion assembly comprises a cage having a top and bottom plane with a lumen and an allograft shaped to fit substantially within the lumen; and

wherein the allograft is shaped to extend above the top plane and below the bottom plane of the cage.