System and method for anterior approach for installing tibial stem

• US 9,675,365 B2
• Filed: 09/27/2013
• Issued: 06/13/2017
• Est. Priority Date: 02/24/2009
• Status: Active Grant

• Current Assignee: MicroPort Orthopedics Holdings, Inc. (MicroPort Scientific Corp.)
• Original Assignee: MicroPort Orthopedics Holdings, Inc. (MicroPort Scientific Corp.)
• Inventors: Lancianese, Sarah, Langston, Glen D.
• Primary Examiner(s): BOLES, SAMEH RAAFAT
• Application Number:
  US14/039,874
• Publication Number:
  US 20140031827A1
• Time in Patent Office: 1,355 Days
• Field of Search: None
• CPC Class Codes: A61B 17/15 Guides therefor arrangements for guiding straight saw blades in general B23D51/025
• CPC Class Codes: A61B 17/1633 Sleeves, i.e. non-rotating parts surrounding the bit shaft, e.g. the sleeve forming a single unit with the bit shaft A61B17/1644 takes precedence
• 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 17/1717 for applying intramedullary nails or pins
• CPC Class Codes: A61B 17/1728 for holes for bone plates or plate screws
• CPC Class Codes: A61B 17/1739 specially adapted for particular parts of the body
• CPC Class Codes: A61B 17/1775 for the foot or ankle
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/568 produced with shape and dimensions specific for an individual patient
• CPC Class Codes: A61B 2034/108 Computer aided selection or customisation of medical implants or cutting guides
• CPC Class Codes: A61F 2/4202 for ankles

Abstract

A method includes inserting a guide mount into a space between a talus and a tibia until a mating portion having a conformal bone engaging surface is disposed against the tibia. An instrument guide is into a cavity defined by the guide mount such that an opening defined by a superior wall of the instrument guide aligns with an opening defined by a superior wall of the guide mount. A reamer head disposed within the opening defined by the instrument guide is connected to a flexible reamer shaft that is received within a passageway defined by the instrument guide. The talus is reamed with the reamer head driven by the flexible reamer shaft.

Claims

1. A surgical system, comprising:

a guide mount including

an inferior wall including an inferior surface sized and configured to mate against a flat formed on a superior surface of a resected talus,

a pair of opposed side walls extending from a rear wall,

a superior wall extending from the rear wall and between the pair of opposed side walls to define a cavity in combination with the inferior wall, the rear wall, and the pair of side walls, the superior wall defining a first opening, and

a mating portion extending from the superior wall and including a conformal bone engaging surface for mating against a tibia; and

an instrument guide sized and configured to be received within the cavity defined by the guide mount, the instrument guide including

a front face defining a passageway and a second opening in communication with the passageway, the passageway sized and configured to receive a first surgical instrument, and the second opening sized and configured to receive a second surgical instrument, and

a superior surface defining a third opening that communicates with the second opening and is arranged such that the third opening aligns with the first opening when the instrument guide is received within the cavity defined by the guide mount, wherein the first surgical instrument is configured to be coupled to the second surgical instrument, wherein the first surgical instrument is a shaft of a flexible reamer, and the second surgical instrument is a reamer head.

2. The surgical system of claim 1, wherein the guide mount is formed from a first material that is different from a material from which the instrument guide is formed.

3. The surgical system of claim 1, wherein the mating portion defines a pair of holes sized and configured to receive pins therein for securing the guide mount to a tibia.

4. The surgical system of claim 1, wherein the guide mount includes interfaces between the superior wall and the pair of side walls, and wherein the interfaces are disposed at non-perpendicular angles with respect to the side walls and the superior wall.

5. A surgical system, comprising:

a guide mount including

a pair of opposed side walls extending from a rear wall,

a superior wall extending from the rear wall and between the pair of opposed side walls, the superior wall defining a first opening,

a mating portion extending from the superior wall and including a conformal bone engaging surface for mating against a tibia, and

an inferior wall including an inferior surface sized and configured to mate against a flat formed on a superior surface of a resected talus, the inferior wall extending at a non-perpendicular angle from the rear wall and defining a cavity in combination with the superior wall, the rear wall, and the pair of side walls; and

an instrument guide sized and configured to be received within the cavity defined by the guide mount, the instrument guide including

a front face defining a passageway sized and configured to receive a first surgical instrument, and

a superior surface defining a second opening that communicates with the passageway and is arranged such that the third opening aligns with the first opening when the instrument guide is received within the cavity defined by the guide mount, the second opening sized and configured to receive a second surgical instrument, wherein the first surgical instrument is configured to be coupled to the second surgical instrument, wherein the first surgical instrument is a shaft of a flexible reamer, and the second surgical instrument is a reamer head.

6. The surgical system of claim 5, wherein the guide mount is formed from a first material that is different from a material from which the instrument guide is formed.

7. The surgical system of claim 5, wherein the mating portion defines a pair of holes sized and configured to receive pins therein for securing the guide mount to a tibia.

8. The surgical system of claim 5, wherein the guide mount includes interfaces between the superior wall and the pair of side walls, and wherein the interfaces are disposed at non-perpendicular angles with respect to the side walls and the superior wall.