Patient-specific osteotomy devices and methods

Patent metadata

Field	Value
Publication number	US-9456833-B2
Application number	US-201414159071-A
Country	US
Kind code	B2
Filing date	Jan 20, 2014
Priority date	Feb 26, 2010
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

An osteotomy method includes attaching a patient-specific osteotomy guide to a corresponding surface of a tibia of a patient and making an osteotomy at a patient-specific orientation through a resection slot of the osteotomy guide. The osteotomy guide is removed and first and second faces of the osteotomy are opened to form an implant insertion angle. The first and second faces of the osteotomy are secured at the implant insertion angle and an osteotomy implant having a patient-specific wedge angle that is smaller than the implant insertion angle is implanted. The first and second faces of the osteotomy are brought to the patient-specific wedge angle and in contact with the osteotomy implant.

First claim

What is claimed is:

1. An osteotomy surgical system comprising:
a patient-specific osteotomy guide having a three-dimensional inner surface as a negative surface of a specific patient's tibia that is configured to closely mate and conform to a corresponding portion of the specific patient's tibia in only one position, wherein the patient-specific osteotomy guide includes a resection slot at a patient-specific position and orientation for guiding a cutting tool to perform an osteotomy according to a preoperative plan for the patient, and a drill support sized and shaped for guiding a drilling of a stress-relief hole at a sharp edge of the osteotomy; and
further comprising a patient-specific osteotomy implant forming a wedge angle equal to a patient-specific osteotomy angle and having patient-specific outer surface.

2. The osteotomy surgical system of claim 1 , wherein the osteotomy implant is shaped to form an open channel for a stem implant.

3. The osteotomy surgical system of claim 2 , wherein the osteotomy implant is U-shaped or horseshoe-shaped.

4. The osteotomy surgical system of claim 3 , wherein the osteotomy guide includes a drill hole for guiding the osteotomy implant and intersecting the resection slot and wherein the osteotomy implant includes a protrusion configured to be received into a guiding hole drilled into the tibia through the drill hole.

5. The osteotomy surgical system of claim 1 , further comprising a patient-specific fixation plate having a patient-specific inner surface for engaging the tibia and securing the fixation plate.

6. An osteotomy surgical system comprising:
a patient-specific osteotomy guide having a three-dimensional inner surface as a negative surface of a specific patient's tibia that is configured to closely mate and conform to a corresponding portion of the specific patient's tibia in only one position, wherein the patient-specific osteotomy guide includes a resection slot at a patient-specific position and orientation for guiding a cutting tool to perform an osteotomy according to a preoperative plan for the patient, and a drill support sized and shaped for guiding a drilling of a stress-relief hole at a sharp edge of the osteotomy; and
further comprising a patient-specific osteotomy spreader having first and second surfaces forming a patient-specific osteotomy angle.

7. The osteotomy surgical system of claim 6 , further comprising an osteotome having gradation markings for opening the osteotomy to an insertion angle greater than the osteotomy angle.

8. The osteotomy surgical system of claim 7 , further comprising an impactor assembly including an impactor plate, a handle, a shaft and a distal tip having threads configured for selective coupling to the osteotomy spreader and the osteotome.

9. The osteotomy surgical system of claim 8 , wherein each of the osteotomy spreader and the osteotome includes a threaded tubular portion couplable to the distal tip of the impactor assembly.

10. An osteotomy surgical system comprising:
a patient-specific osteotomy guide having a three-dimensional inner surface as a negative surface of a specific patient's tibia that is configured to closely mate and conform to a corresponding portion of the specific patient's tibia in only one position, wherein the patient-specific osteotomy guide includes a resection slot at a patient-specific position and orientation for guiding a cutting tool to perform an osteotomy according to a preoperative plan for the patient, and a drill support sized and shaped for guiding a drilling of a stress-relief hole at a sharp edge of the osteotomy; and
further comprising an osteotomy securing device including first and second members configured for securing first and second faces of the osteotomy at an implant insertion angle for inserting the osteotomy implant and wherein the first and second members are slidably adjustable relative to one another.

11. The osteotomy surgical system of claim 10 , wherein the first member of the osteotomy securing device includes a cylindrical bore slidably receiving a cylindrical shaft of the second member.

12. The osteotomy surgical system of claim 11 , wherein the osteotomy securing device includes a locking member for securing a relative position between the first and second members.

13. The osteotomy surgical system of claim 12 , wherein the osteotomy securing device includes first and second blocks for removably attaching the first and second members to the tibia at opposite sides of the osteotomy.

14. The osteotomy surgical system of claim 10 , further comprising a posterior blade guard having a blade stop portion configured to be inserted against a posterior bone surface of the tibia for protecting soft tissue and a curved retractor portion for retracting soft tissue at an incision site for the osteotomy.

15. An osteotomy surgical system comprising:
a patient-specific osteotomy guide having a three-dimensional inner engagement surface as a negative surface of a specific patient's tibia that is configured to closely mate and conform to a corresponding surface of the specific patient's tibia in only one position, wherein the patient-specific osteotomy guide defines a resection slot at a patient-specific position and orientation for guiding a cutting tool to perform an osteotomy according to a pre-operative plan for the patient;
wherein the resection slot includes two resection slots at patient-specific positions and orientations for guiding the cutting tool to perform osteotomies according to the pre-operative plan for the patient for use with a closed wedge osteotomy.

16. The osteotomy surgical system of claim 15 , further comprising a patient-specific fixation plate having a patient-specific inner surface for engaging the tibia and securing the fixation plate.

17. The osteotomy surgical system of claim 15 , further comprising a posterior blade guard having a blade stop portion configured to be inserted against a posterior bone surface of the tibia for protecting soft tissue and a curved retractor portion for retracting soft tissue at an incision site for the osteotomy.

18. An osteotomy surgical system comprising:
a patient-specific osteotomy guide having a three-dimensional inner engagement surface as a negative surface of a specific patient's tibia that is configured to closely mate and conform to a corresponding surface of the specific patient's tibia in only one position, wherein the patient-specific osteotomy guide defines a resection slot at a patient-specific position and orientation for guiding a cutting tool to perform an osteotomy according to a pre-operative plan for the patient;
wherein the patient-specific osteotomy guide further includes ad/ill guide to guide a drill along at least a portion of the resection slot between opposing ends of the slot.

19. The osteotomy surgical system of claim 18 , further comprising a patient-specific osteotomy implant forming a wedge angle equal to a patient-specific osteotomy angle and having an elongated protrusion configured to align relative to the drill guide.

20. The osteotomy surgical system of claim 18 , further comprising a second drill guide on the patient-specific osteotomy guide including a curved rig configured to guide a drill to form a stress relief hole relative to the osteotomy.

21. An osteotomy surgical system comprising:
a patient-specific osteotomy implant having a three-dimensional patient-specific surface configured to closely mate and conform to a corresponding portion of a specific patient's tibia

Assignees

• Biomet Sports Medicine Llc

Inventors

• Maxson William
• Stone Kevin T
• Pierce Andrew L
• Metzger Robert

Classifications

• A61B17/58 Primary

  for osteosynthesis, e.g. bone plates, screws or setting implements (A61B17/14, A61B17/16 take precedence) · CPC title

• A61B17/152

  for removing a wedge-shaped piece of bone · CPC title

• A61B17/8095

  Wedge osteotomy devices · CPC title

• A61B17/1764 Primary

  for the knee · CPC title

• A61B17/151 Primary

  for corrective osteotomy · CPC title