Patient selectable joint arthroplasty devices and surgical tools
AssigneeConforMIS, Inc.
InventorsWolfgang Fitz, Philipp Lang, Raymond A. Bojarski, Daniel Steines
Life of this patent
Estimating the term…
Abstract
A patellar 3-D guidance tool includes a template. The template includes at least one contact surface for engaging a surface of the patella. The at least one contact surface substantially conforms with the surface associated with the patellar. At least one guide aperture directs movement of a surgical instrument, wherein the shape and/or position of the guide aperture is based, at least in part, on three or more anatomic reference points associated with the patellar.
Claims123
A patient-specific surgical tool for use in surgically repairing a joint of a patient, comprising:
- a block having a patient-specific surface and a guide,
- the patient-specific surface having a shape configured to be substantially a negative of a corresponding portion of a surface of the joint, wherein the surface of the joint includes an osteophyte;
- and
- the guide being sized to accommodate a surgical tool and have a position and orientation relative to the patient-specific surface to provide a predetermined cutting or drilling path for the cutting or drilling tool that is aligned through a portion of tissue of the joint.
A surgical tool for use in surgically repairing a joint of a patient, comprising:
- a cutting block having a patient-specific surface and a guide;
- the patient-specific surface having a first portion has a shape that is substantially a negative of a corresponding portion of an articular surface of the joint and a second portion that is configured to substantially avoid contact with one or more osteophytes of the joint when the first portion is engaged and aligned with the corresponding portion of the articular surface;
- and
- the guide being sized to accommodate a cutting tool and have a position and orientation relative to the patient-specific surface to provide a predetermined drilling or cutting path for the cutting tool that is aligned through a portion of tissue of the joint when the first portion is engaged and aligned with the corresponding portion of the articular surface.
A surgical tool for use in surgically repairing a joint of a patient, comprising:
- a cutting block having a patient-specific surface and a guide;
- the patient-specific surface having a first portion configured to have a shape that is substantially a negative of a cartilage surface of the joint and a second portion configured to have a shape that is substantially a negative of a cortical bone surface of the joint;
- the guide being sized to accommodate a surgical tool for cutting or drilling and have a position and orientation relative to the patient-specific surface to provide a predetermined cutting path for the cutting tool that is aligned through a portion of bone of the joint.
A surgical tool for use in surgically repairing a joint of a patient, comprising:
- a cutting block having a patient-specific surface and a;
- the patient-specific surface having a first portion configured to have a shape that is substantially a negative of a subchondral bone surface of the joint and a second portion configured to have a shape that is substantially a negative of a cortical bone surface of the joint;
- the guide being sized to accommodate a cutting tool and have a position and orientation relative to the patient-specific surface to provide a predetermined cutting path for the cutting tool that is aligned through a portion of tissue of the joint.
A surgical tool for use in surgically repairing a joint of a patient, comprising:
- a cutting block having a patient-specific surface and a guide;
- the patient-specific surface having a first portion configured to have a shape that is substantially a negative of a subchondral bone surface of the joint, a second portion configured to have a shape that is substantially a negative of a cortical bone surface of the joint, and a third portion configured to have a shape that is substantially a negative of a cartilage surface of the joint;
- the guide being sized to accommodate a cutting tool and have a position and orientation relative to the patient-specific surface to provide a predetermined cutting path for the cutting tool that is aligned through a portion of bone associated with the joint.
A surgical tool for use in surgically repairing a joint of a patient, comprising:
- a block having a patient-specific surface and a guide sized to accommodate a surgical tool;
- the patient-specific surface having at least a portion configured to have a shape that is substantially a negative of a corresponding portion of a joint surface of the patient that includes an osteophyte;
- the guide having a position and orientation relative to the patient-specific surface to provide a predetermined path for cutting or drilling when the patient-specific surface is placed against the joint surface of the patient such that the guide has a predetermined alignment relative to an anatomical or biomechanical axis of the patient's joint.
The surgical tool of 116, wherein the patient-specific surface references the osteophyte, when the portion of the patient specific surface is engaged and aligned with the corresponding portion of the joint surface.
Dependencies are inferred from the claim text.