Orthopedic surgical guide

• US 8,808,303 B2
• Filed: 12/19/2011
• Issued: 08/19/2014
• 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: Stemniski, Paul, Obert, Richard, Lancianese, Sarah
• Primary Examiner(s): Yang, Andrew
• Assistant Examiner(s): Jones, Diana S
• Application Number:
  US13/330,091
• Publication Number:
  US 20120130434A1
• Time in Patent Office: 974 Days
• Field of Search: 606/87, 606/90, 606 96- 98, 606/105
• US Class Current: 606/96
• CPC Class Codes: A61B 17/15 Guides therefor arrangements for guiding straight saw blades in general B23D51/025
• CPC Class Codes: A61B 17/1717 for applying intramedullary nails or pins
• 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 2017/568 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 system for establishing an intramedullary path includes a body sized and configured to be received within a resected bone space. The body defines a first aperture that extends through the body and is sized and configured to receive a surgical tool therethrough. A first bone engaging structure extends from the body in a first direction and includes a first surface that is complementary to a surface topography of a first bone. When the first surface of the bone engaging structure engages the surface topography of the first bone to which the first surface is complementary, an axis defined by the first aperture is substantially collinear with a mechanical axis of the first bone.

Claims

1. A system for establishing an intramedullary path, comprising:

a body sized and configured to be received within a resected bone space and defining a first aperture that extends through the body, the first aperture sized and configured to receive a surgical tool therethrough;

a first bone engaging structure extending from the body in a first direction, the first bone engaging structure including a first surface that is complementary to a surface topography of a tibia; and

a drill guide sized and configured to be received within the first aperture defined by the body, the drill guide defining a second aperture sized and configured to receive the surgical tool therethrough,

wherein when the first surface of the bone engaging structure engages the surface topography of the tibia to which the first surface is complementary, an axis defined by the first aperture is substantially collinear with an axis of the tibia, and

wherein the first aperture includes a reduced diameter portion, and an outer surface of the drill guide includes a first portion having a smaller cross-sectional area than a second portion and being sized and configured to be received within the reduced diameter portion of the first aperture.

2. The system of claim 1, wherein a second bone engaging structure extends from the body in a direction that is substantially opposite the first direction, the second bone engaging structure including a second surface that is complementary to a surface topography of a second bone that is different from the tibia.

3. The system of claim 2, wherein the second bone is a talus.

4. The system of claim 1, wherein an outer surface of the drill guide includes a flat surface that is complementary to a non-rotation feature disposed within the first aperture.

5. The system of claim 1, wherein the second aperture tapers along at least part of its length.

6. The system of claim 1, wherein the body defines at least one hole for coupling the body to a coupling bar, the coupling bar configured to engage a pair of alignment rods extending from a foot holder assembly.

7. A system for establishing an intramedullary path, comprising:

a drill guide mount including a body sized and configured to be received within a resected bone space, the body defining a first aperture that extends through the body, a first bone engaging structure extending from the body in a first direction and including a first surface that is complementary to a surface topography of a tibia; and

a drill guide sized and configured to be received within the first aperture defined by the body of the drill guide mount, the drill guide defining a second aperture sized and configured to receive the surgical tool therethrough,

wherein when the first surface of the bone engaging structure engages the surface topography of the first bone to which the first surface is complementary, an axis defined by the first aperture is substantially collinear with an axis of the tibia,

wherein the first aperture includes a reduced diameter portion, and an outer surface of the drill guide includes a first portion having a smaller cross-sectional area than a second portion and being sized and configured to be received within the reduced diameter portion of the first aperture.

8. The system of claim 7, wherein a second bone engaging structure extends from the body of the drill guide mount in a direction that is substantially opposite the first direction, the second bone engaging structure including a second surface that is complementary to a surface topography of a second bone that is different from the tibia.

9. The system of claim 8, wherein the first and second bone engaging structures each include at least one hole sized and configured to receive a k-wire therethrough.

10. The system of claim 7, wherein an outer surface of the drill guide includes a flat surface that is complementary to a non-rotation feature disposed within the first aperture.

11. The system of claim 7, wherein the second aperture tapers along at least part of its length.

12. The system of claim 7, further comprising a coupling bar sized and configured to engage a pair of alignment rods extending from a foot holder assembly, the coupling bar configured to be coupled to the body of the drill guide mount for maintaining a position of the drill guide mount relative to the foot holder assembly.

13. A method comprising:

inserting a first portion of a drill guide into a reduced diameter portion of an aperture defined by a drill guide mount, the first portion of the drill guide having a smaller cross-sectional area than a second portion of the drill guide, the drill guide mount including a first bone engaging structure extending from a body of the drill guide mount in a first direction and having a first surface that is complementary to a surface topography of a tibia;

inserting the drill guide mount and the drill guide disposed within the first aperture of the drill guide mount into a resected bone space such that the first surface of the bone engaging structure correspondingly engages the tibia; and

extending a surgical tool through a second aperture defined by the drill guide to establish an intramedullary channel within the first bone that is substantially collinear with an axis of the tibia.

14. The method of claim 13, wherein the drill guide mount includes a second bone engaging structure that extends from the body of the drill guide mount in a direction that is substantially opposite the first direction, the second bone engaging structure including a second surface that is complementary to a surface topography of a second bone that is different from the tibia.

15. The method of claim 14, wherein when the first surface of the bone engaging structure correspondingly engages the tibia, the second surface correspondingly engages the second bone.

16. The method of claim 13, further comprising:

inserting a first k-wire through a first hole defined by the first bone engaging structure and into the tibia; and

inserting a second k-wire through a second hole defined by the second bone engaging structure and into the second bone.

17. The method of claim 13, further comprising:

coupling the drill guide mount to a coupling bar; and

attaching the coupling bar to a pair of alignment rods extending from a surgical fixation assembly.

18. The method of claim 17, wherein the surgical fixation assembly is a foot holder assembly, the first bone is the tibia, and the second bone is the talus.