Method and apparatus for attaching a reference marker to a patient

Patent metadata

Field	Value
Publication number	US-11660145-B2
Application number	US-201816605712-A
Country	US
Kind code	B2
Filing date	Aug 9, 2018
Priority date	Aug 11, 2017
Publication date	May 30, 2023
Grant date	May 30, 2023

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 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.

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

11. The apparatus of claim 10 , wherein the anchoring device is composed of a shape-memory alloy.

12. The apparatus of claim 10 , wherein the anchoring device comprises a nickel titanium alloy.

13. The apparatus of claim 10 , further comprising an actuator for selectively deploying the anchoring device.

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

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

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

Assignees

• Mobius Imaging Llc

Inventors

• Tillett Jason
• Coppen Scott

Classifications

• A61B2090/3937

  Visible markers · CPC title

• A61B2090/3762

  using computed tomography systems [CT] · CPC title

• A61B2034/2059

  Mechanical position encoders · CPC title

• A61B34/30

  Surgical robots · CPC title

• A61B2017/00867

  shape memory effect · CPC title