Devices and methods for temporary mounting of parts to bone

Patent metadata

Field	Value
Publication number	US-11751950-B2
Application number	US-202017027767-A
Country	US
Kind code	B2
Filing date	Sep 22, 2020
Priority date	Aug 12, 2015
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

Devices and methods for temporarily affixing a surgical apparatus to a bony structure. The temporary mount includes a base member having a top face configured to be impacted by an insertion device and a plurality of elongated prongs extending downwardly from the base member and configured to engage a bony structure. The prongs are separated a distance from one another, and the prongs are configured to move inwardly toward one another when driven downward into the bony structure.

First claim

What is claimed is:

1. A method of temporarily affixing a temporary mount to a bone, comprising:
inserting a central shaft through soft tissue and into contact with bone;
inserting a cannulated temporary mount over the central shaft and moving the temporary mount downwardly and into contact with the bone, the cannulated temporary mount having a first end and a second end terminating as a plurality of spaced apart elongated prongs;
applying a driving force to the inserted cannulated temporary mount to cause the cannulated temporary mount to advance into the bone; and removing the central shaft to leave the cannulated temporary mount embedded in the bone; wherein the plurality of elongated prongs includes four or more prongs extending from a base member; wherein the step of driving includes impacting the base member with an insertion device to drive the elongated prongs downward, wherein the base member is impacted, the temporary mount provides an audible sound, and as each of the elongated prongs is driven downward, a frequency of the audible sound changes indicating when the temporary mount is fully seated in the bone.

2. The method of claim 1 , further comprising:
positioning a driving sleeve over the central shaft and into contact with the first end of the temporary mount after insertion of the temporary mount; and
the step of applying a driving force includes applying a driving force to the positioned driving sleeve.

3. The method of claim 1 , wherein the plurality of elongated prongs are shaped to move inwardly toward one another when driven downward into the bone.

4. The method of claim 1 , further comprising:
monitoring the ringing noise frequency of the prongs as they are being driven into the bone for purposes of determining whether the temporary mount is fully and rigidly seated.

5. The method of claim 1 , wherein the step of inserting the cannulated temporary mount includes inserting the temporary mount having a through hole that extends completely through the base from which the prongs extend.

6. The method of claim 1 , wherein the step of inserting the cannulated temporary mount includes inserting the temporary mount having four prongs.

7. The method of claim 1 , wherein the temporary mount includes an outer sleeve, and the method further comprising rotating the outer sleeve in order to compress the plurality of elongated prongs inwardly toward one another to further secure the temporary mount to the bone.

8. The method of claim 1 , further comprising:
attaching a portion of a trackable reference array for surgical navigation to the temporary mount.

9. The method of claim 1 , wherein the plurality of elongated prongs extend a length greater than a length of the base member.

10. The method of claim 1 , wherein the plurality of elongated prongs include a first prong, a second prong, a third prong, and a fourth prong, wherein a first arched portion between the first prong and the second prong has a first distance from a top face of the base member, and a second arched portion from the second prong to the third prong has a second distance from the top face, the second distance being greater than the first distance.

11. The method of claim 1 , wherein each of the plurality of elongated prongs includes a protrusion extending therefrom configured to act as a stop to prevent over-insertion of the temporary mount in the bone.

12. The method of claim 11 , wherein each protrusion is a hill-shaped prominence.

13. The method of claim 1 , wherein the plurality of elongated prongs includes a first prong and a second prong, and a transition from the first prong to the second prong is arched to provide an ultimate stop to prevent over-insertion of the temporary mount in the bone.

14. The method of claim 1 , wherein each of the plurality of elongated prongs have a textured inner surface configured to resist extraction from the bone.

15. The method of claim 1 , wherein each of the plurality of elongated prongs have a distal-most tip configured to penetrate the bone.

16. The method of claim 1 , wherein the temporary mount is configured to hold and engage a portion of a trackable reference array for surgical navigation.

17. The method of claim 1 , wherein the bone is a vertebra of a spine.

Assignees

• Globus Medical Inc

Inventors

• Bartelme Michael
• Crawford Neil R
• Foster Mitchell A
• Major Chris
• Theodore Nicholas

Classifications

• A61B90/39 Primary

  Markers, e.g. radio-opaque or breast lesions markers · CPC title

• A61B34/20 Primary

  Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis · CPC title

• A61B2090/3983

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

• A61B2090/3916

  Bone tissue · CPC title

• A61B2090/3991

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