Method and apparatus for attaching a reference marker to a patient

Patent metadata

Field	Value
Publication number	US-12239390-B2
Application number	US-202318135861-A
Country	US
Kind code	B2
Filing date	Apr 18, 2023
Priority date	Aug 11, 2017
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

Systems and methods for attaching a reference marker to a patient in a computer-assisted image-guided surgery system. An apparatus for attaching a reference marker to a patient includes an elongated member extending between a first end and a second end, a sharp tip located proximate to the first end of the elongated member that is configured to break through a cortical surface of a bone of the patient to enable the elongated member to be advanced into the bone, an anchoring device that is extendable from the elongated member in order to anchor the apparatus within the bone and inhibit relative movement of the apparatus and the bone, and a reference marker device comprising at least one optical marker configured to enable the apparatus to be tracked using a motion tracking system.

First claim

What is claimed is:

1. An apparatus for attaching a reference marker device to a patient, comprising:
an elongated member extending along an axis between a first end and a second end;
at least one marker operatively attached to the elongated member to enable the apparatus to be tracked using a motion tracking system;
a sharp tip located proximate to the first end of the elongated member that is configured to break through a cortical surface of a bone of the patient to enable the elongated member to be advanced into the bone; and
an anchoring device extending from the elongated member in a direction transverse to the axis to anchor the apparatus within the bone and inhibit rotation of the apparatus about the axis relative to the bone.

2. The apparatus of claim 1 , wherein the elongated member comprises a cannula having a central opening extending between a first end and a second end of the cannula.

3. The apparatus of claim 2 , further comprising a second elongated member having a first end and a second end, the sharp tip being located at the first end of the elongated member, the second elongated member being insertable into the cannula, such that the sharp tip extends beyond the first end of the cannula.

4. The apparatus of claim 3 , further comprising a connector for connecting the cannula and the second elongated member at their respective second ends.

5. The apparatus of claim 3 , wherein the second elongated member is removable from the cannula.

6. The apparatus of claim 5 , wherein the second elongated member is removable from the cannula after the sharp tip breaks through the cortical surface, and the cannula is configured collect bone tissue within the central opening of the cannula when the cannula is advanced into an interior portion of the bone.

7. The apparatus of claim 6 , wherein the bone tissue is removable through the second end of the cannula to harvest bone marrow of the patient.

8. The apparatus of claim 5 , further comprising:
a third elongated member that is insertable into the cannula, the reference marker device being attached to the third elongated member.

9. The apparatus of claim 8 , wherein the anchoring device deploys automatically when the third elongated member is inserted into the cannula.

10. The apparatus of claim 8 , further comprising an attachment mechanism to lock the third elongated member within the cannula.

11. The apparatus of claim 1 , wherein the anchoring device is deployed by extending a plurality of anchoring elements radially outward with respect to an outer surface of the elongated member and/or longitudinally away from the first end of the elongated member.

12. The apparatus of claim 1 , wherein the anchoring device comprises a plurality of wires that are extendable from the first end of the elongated member.

13. The apparatus of claim 12 , wherein the anchoring device is composed of a shape-memory alloy.

14. The apparatus of claim 12 , wherein the anchoring device comprises a nickel titanium alloy.

15. The apparatus of claim 12 , further comprising an actuator for selectively deploying the anchoring device.

16. The apparatus of claim 1 , wherein the bone is an iliac crest of the patient.

17. The apparatus of claim 1 , wherein the reference marker device is non-removably attached to the elongated member.

18. The apparatus of claim 1 , wherein the at least one marker comprises a plurality of reflective spheres mounted to a rigid frame.

Assignees

• Mobius Imaging Llc

Inventors

• Tillett Jason
• Coppen Scott

Classifications

• A61B2017/00867

  shape memory effect · CPC title

• A61B2010/0258

  Marrow samples · CPC title

• A61B10/025

  for taking bone, bone marrow or cartilage samples · CPC title

• A61B2090/3991

  having specific anchoring means to fixate the marker to the tissue, e.g. hooks · CPC title

• A61B2090/3983

  Reference marker arrangements for use with image guided surgery · CPC title