Patient Selectable Joint Arthroplasty Devices and Surgical Tools

• US 20110213373A1
• Filed: 01/26/2011
• Published: 09/01/2011
• Est. Priority Date: 11/25/2003
• Status: Active Grant

• Current Assignee: Conformis Incorporated
• Original Assignee: Conformis Incorporated
• Inventors: Lang, Philipp, Fitz, Wolfgang
• Granted Patent: US 9,314,256 B2
• Time in Patent Office: Days
• US Class Current: 606/87
• CPC Class Codes: A61B 17/15 Guides therefor arrangements for guiding straight saw blades in general B23D51/025
• CPC Class Codes: A61B 17/154 for preparing bone for knee prosthesis
• CPC Class Codes: A61B 17/155 Cutting femur
• CPC Class Codes: A61B 17/157 Cutting tibia
• CPC Class Codes: A61B 17/158 Cutting patella
• CPC Class Codes: A61B 17/1666 for the acetabulum
• CPC Class Codes: A61B 17/1675 for the knee
• CPC Class Codes: A61B 17/1677 for the patella
• CPC Class Codes: A61B 17/1682 for the foot or ankle
• CPC Class Codes: A61B 17/1703 using imaging means, e.g. by X-rays
• CPC Class Codes: A61B 17/1739 specially adapted for particular parts of the body
• CPC Class Codes: A61B 17/1746 for the acetabulum
• CPC Class Codes: A61B 17/1767 for the patella
• CPC Class Codes: A61B 2017/568 produced with shape and dimensions specific for an individual patient
• CPC Class Codes: A61B 2034/105 Modelling of the patient, e.g. for ligaments or bones
• CPC Class Codes: A61B 2034/108 Computer aided selection or customisation of medical implants or cutting guides
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 5/4504 Bones A61B5/4547 takes precedence
• CPC Class Codes: A61B 5/4514 Cartilage
• CPC Class Codes: A61B 5/4523 : Tendons
• CPC Class Codes: A61B 5/4528 : Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61B 5/4533 : Ligaments
• CPC Class Codes: A61F 2/30756 : Cartilage endoprostheses A61F2/3603 takes precedence
• CPC Class Codes: A61F 2/30942 : for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
• CPC Class Codes: A61F 2/38 : for elbows or knees
• CPC Class Codes: B33Y 80/00 : Products made by additive manufacturing
• CPC Class Codes: G06F 30/00 : Computer-aided design [CAD]
• CPC Class Codes: G06F 30/10 : Geometric CAD
• CPC Class Codes: Y10T 29/49 : Method of mechanical manufacture

Abstract

Disclosed herein are methods, compositions and tools for repairing articular surfaces repair materials and for repairing an articular surface. The articular surface repairs are customizable or highly selectable by patient and geared toward providing optimal fit and function. The surgical tools are designed to be customizable or highly selectable by patient to increase the speed, accuracy and simplicity of performing total or partial arthroplasty.

Claims

1. A surgical tool for use in surgically repairing a hip joint of a patient, comprising:

a block having a patient-specific surface and a guide sized to accommodate a surgical tool;

wherein the patient-specific surface has a first portion that is substantially a negative of an acetabular rim surface adjacent the hip joint and a second portion that is substantially a negative of a cartilage surface associated with the hip joint; and

wherein the guide has a position and orientation relative to the patient-specific surface to define a predetermined path for the surgical tool that is aligned through a portion of tissue associated with the hip joint when the patient specific surface is placed against and aligned with the acetabular rim surface.

2. A surgical tool for use in surgically repairing a hip joint of a patient, comprising:

a block having a patient-specific surface and a guide sized to accommodate a surgical tool;

wherein the patient-specific surface has a first portion that is substantially a negative of an acetabular rim surface adjacent the hip joint and a second portion that is substantially a negative of a subchondral bone surface associated with the hip joint; and

wherein the guide has a position and orientation relative to the patient-specific surface to define a predetermined path for the surgical tool that is aligned through a portion of tissue associated with the hip joint when the patient specific surface is placed against and aligned with the acetabular rim surface.

3. A surgical instrument for use in surgically repairing a hip joint of a patient, comprising:

a block having a patient-specific surface and a guide sized to accommodate a surgical tool;

wherein the patient-specific surface is based on image data of at least a portion of an acetabular rim of the hip joint of the patient; and

wherein the guide has a position and orientation relative to the patient-specific surface to define a predetermined axis for a reaming tool that is aligned through a portion of the acetabulum of the hip joint when the patient specific surface is placed against and aligned with the acetabular rim surface.

4. A surgical instrument for use in surgically repairing a hip joint of a patient, comprising:

a block having a patient-specific surface and a guide sized to accommodate a surgical tool;

wherein the patient-specific surface is based on image data of at least a portion of an acetabular rim of the hip joint of the patient; and

wherein the guide has a position and orientation relative to the patient-specific surface to define a predetermined path that defines at least in part an orientation of an acetabular component when the patient specific surface is placed against and aligned with the acetabular rim surface.

5. A surgical tool for use in surgically repairing a hip joint of a patient, comprising:

a block having a patient-specific surface and a guide sized to accommodate a surgical tool;

wherein the patient-specific surface has a first portion that is substantially a negative of an acetabular rim surface adjacent the hip joint and a second portion that is substantially a negative of a cortical bone surface associated with the hip joint; and

wherein the guide has a position and orientation relative to the patient-specific surface to define a predetermined path for the surgical tool that is aligned through a portion of tissue associated with the hip joint when the patient specific surface is placed against and aligned with the acetabular rim surface.