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US 8,425,524 B2Granted
Customized patient-specific multi-cutting blocks
AssigneeDePuy Synthes Products, Inc.
InventorsChris Aker, Joseph G. Wyss, Dimitri Sokolov
Life of this patent
Estimating the term…
Abstract
A number of orthopaedic surgical instruments are also disclosed. A method, apparatus, and system for fabricating such instruments are also disclosed.
Claims7
A customized patient-specific orthopaedic surgical instrument, comprising:
- a generally L-shaped cutting block having (i) an anterior bone-facing surface defined in an anterior plate, the anterior bone-facing surface being configured to receive a portion of an anterior side of a bone of a knee of a patient, and (ii) a distal bone-facing surface defined in a distal plate, the distal bone-facing surface being configured to receive a portion of a distal side of the bone of the patient,
- wherein the anterior bone-facing surface has (i) a first flat surface connected to and extending distally in a direction away from a proximal-most edge of the bone cutting block and toward the distal bone-facing surface of the cutting block, (ii) an anterior customized patient-specific negative contour surface that is shaped to match a corresponding contour of a portion of an anterior side of the bone of the knee of the patient, the anterior customized patient-specific negative contour extending distally away from the first flat surface of the anterior bone-facing surface, and (iii) a second flat surface that extends distally from the anterior customized patient-specific negative contour surface toward the distal bone-facing surface,
- wherein the distal bone-facing surface has (i) a first flat surface connected to and extending posteriorly in a direction away from the anterior bone-facing surface of the bone cutting block and toward a posterior-most edge of the cutting block, (ii) a distal customized patient-specific negative contour surface that is shaped to match a corresponding contour of a portion of a distal side of the bone of the knee of the patient, the distal customized patient-specific negative contour extending posteriorly away from the first flat surface of the distal bone-facing surface, and (iii) a second flat surface that extends posteriorly from the distal customized patient-specific negative contour surface toward the posterior-most edge of the cutting block, and
- wherein the distal plate is secured to and extends away from the anterior plate, and the distal plate has (i) a pair of angled cutting guides extending through the distal customized patient-specific negative contour surface, each angled cutting guide defining an angled cutting plane, and (ii) a posterior cutting guide extending through the second flat surface, the posterior cutting guide defining a cutting plane that extends obliquely relative to each angled cutting plane.
1 more element
A customized patient-specific orthopaedic surgical instrument comprising:
- a 5-in-1 orthopaedic cutting block having an L-shaped body including an anterior plate and a distal plate substantially orthogonal to the anterior plate, the L-shaped body having a plurality of captured cutting guides defined therethrough including a distal cutting guide, an anterior cutting guide, a posterior cutting guide, and a pair of chamfer cutting guides,
- wherein the anterior plate includes an anterior bone-facing surface and a proximal end surface connected to the anterior bone-facing surface at a proximal end of the anterior bone-facing surface, the anterior bone-facing surface having defined therein an anterior customized patient-specific negative contour surface that is shaped to match a corresponding contour of a portion of an anterior side of the bone of the knee of the patient, the anterior customized patient-specific negative contour being spaced apart from the proximal end of the anterior bone-facing surface to define an anterior flat surface connected to and extending from the anterior customized patient-specific negative contour to the proximal end of the anterior bone-facing surface,
- wherein the distal plate includes a distal bone-facing surface and a posterior end surface connected to the distal bone-facing surface at a posterior end of the distal bone-facing surface, the distal bone-facing surface having defined therein a distal customized patient-specific negative contour surface that is shaped to match a corresponding contour of a portion of a distal side of the bone of the knee of the patient, the distal customized patient-specific negative contour being spaced apart from the posterior end of the distal bone-facing surface to define a distal flat surface connected to and extending from the distal customized patient-specific negative contour to the posterior end of the distal bone-facing surface,
- wherein the posterior cutting guide extends through the distal flat surface, and
- wherein each chamfer cutting guide of the pair of chamfer cutting guides extends through the distal customized patient-specific negative contour surface of the distal plate.
2 more elements
Dependencies are inferred from the claim text.