Dynamic reference base for robotic-assisted total hip arthroplasty
AssigneeGlobus Medical, Inc.
InventorIsrael Oluwasakin
Life of this patent
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Abstract
A dynamic reference base (DRB) and associated method are provided for rigidly affixing an array frame to bone for use in navigated or robotic surgery. The DRB includes a bridge element that includes a connecting rod having a distal end and a proximal end; a clamp coupled to the distal end of the connecting rod; a first and a second pin guide extending distally from the clamp; a locking nut disposed on the clamp; and a clutch coupled to the proximal end of the connecting rod, the clutch being adapted to couple to the array frame. The DRB also includes the array frame, which is couplable to the clutch, and is adapted to include a plurality of tracking markers disposed thereon.
Claims18
A dynamic reference base (DRB) comprising:
- a bridge element including:
- a connecting rod having a distal end and a proximal end;
- a clamp coupled to the distal end of the connecting rod;
- a first clutch coupled to the proximal end of the connecting rod, the first clutch being adapted to couple to an array frame;
- a first and a second pin guide extending distally from the clamp;
- and
- a locking nut disposed on the clamp and adapted to tighten the bridge element to a bone pin disposed within each of the first and second pin guides;
- and
- the array frame affixed to the first clutch,
- wherein the first clutch includes a first rotatable coupling and a second rotatable coupling, the first rotatable coupling having an axis of rotation that is generally perpendicular to an axis of rotation of the second rotatable coupling.
A method of affixing a dynamic reference base (DRB) to a patient, comprising:
- providing an array frame and a bridge element including:
- a connecting rod having a distal end and a proximal end;
- a clamp coupled to the distal end of the connecting rod;
- a clutch coupled to the proximal end of the connecting rod, the clutch being adapted to couple to the array frame;
- a first and a second pin guide extending distally from the clamp;
- and
- a locking nut disposed on the clamp;
- making a first incision in the patient's skin;
- inserting the first bone pin through the first incision into a pelvis of the patient;
- inserting the first pin guide over the first bone pin;
- using the position of the second pin guide to mark a location for a second incision;
- making the second incision on the patient's skin;
- inserting the second bone pin through the second pin guide;
- tightening the locking nut to secure the bridge element to the first and the second bone pins;
- coupling the array frame to the clutch;
- adjusting a position of the array frame relative to a first axis and a second axis in a defined coordinate system;
- and
- locking the array frame into place relative to the bridge element.
Dependencies are inferred from the claim text.