Orthopedic saw blade

Patent metadata

Field	Value
Publication number	US-9522007-B2
Application number	US-201213544115-A
Country	US
Kind code	B2
Filing date	Jul 9, 2012
Priority date	Jul 9, 2012
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

A saw blade has a base configured for attachment with a driver, the saw being configured for cutting bone. The saw blade includes a body extending from the base to a free end, the body enclosing at least three sides of an open area adjacent the base. The blade further includes a cutting edge having a width and disposed on the body adjacent to the free end thereof and adjacent to the open area such that at least a portion of the cutting edge is disposed toward the base. The open area of the saw blade can be sized to receive a portion of a long bone therein.

First claim

The invention claimed is:

1. A saw blade for cutting bone including a base portion configured for attachment with a driver, the saw blade comprising:
a body portion including an inside edge and having a length extending from the base portion to a free end of the body portion, the body portion enclosing at least part of an open area adjacent the base portion; and
a cutting edge having a width and disposed on the body portion at an end surface on the free end thereof, the end surface adjoining the inside edge and adjacent to the open area such that at least a portion of the cutting edge is disposed toward the base portion; and
wherein the inside edge includes a first inside edge portion and a second inside edge portion, the first inside edge portion extending from the cutting edge to an apex further from the base portion than the cutting edge and from the apex to a first point closer to the base portion than the cutting edge, and the second inside edge portion extending from the first point to the base portion.

2. The saw blade of claim 1 , wherein a first axis extending through the width of the cutting edge, and extending parallel to the end surface, intersects a second axis extending through a center of rotation in the base portion and the end surface, wherein the first axis is disposed at a first angle relative to the second axis, the first angle being between 75° and 105°.

3. The saw blade of claim 2 , wherein the first axis extends from the width of the cutting edge through the open area to the inside edge.

4. The saw blade of claim 3 , wherein the cutting edge includes a plurality of teeth having substantially equal widths and spaced apart along the width of the cutting edge.

5. The saw blade of claim 3 , wherein a length of the first axis through the open area defines a first distance, wherein the first distance is at least about 0.25 inches.

6. The saw blade of claim 2 , wherein the first angle is about 90°.

7. The saw blade of claim 1 , wherein the base portion defines a center of rotation for the blade, and wherein the cutting edge extends along a lateral axis that is tangent to an arc centered at the center of rotation.

8. The saw blade of claim 1 , wherein the body portion of the saw blade includes an outside edge, wherein at least a portion of the outside edge is curved.

9. The saw blade of claim 1 , wherein an axis extending through a center of rotation of the base portion defines a centerline extending in a first direction, and wherein a longitudinal axis of the body portion extends away from the base portion at an angle relative to the centerline of the base portion along an arced path from the base portion toward a first location remote therefrom and from the first location toward the free end such that the longitudinal axis from the first location toward the free end approaches the centerline.

10. The saw blade of claim 9 , wherein the cutting edge extends away from the centerline on a first side thereof to an inside end thereof, and wherein the first location on the longitudinal axis of the body portion is on the first side of the centerline and is disposed at a distance from the inside end.

11. The saw blade of claim 10 , wherein the first location is located at a distance of at least 1 inch from the inside end.

12. The saw blade of claim 1 , wherein the open area is sized to receive a portion of a long bone therein.

13. The saw blade of claim 1 , wherein the cutting edge defines a cutting direction toward an attachment portion of the base portion, and wherein the attachment portion is configured to be receivable in an oscillating portion of the driver by application of a force to the saw blade in the cutting direction and removed therefrom by application of a force opposite the cutting direction of at least a threshold force.

14. The saw blade of claim 13 , wherein the threshold force is greater than a force sufficient for moving the saw blade through a tibia or a femoral condyle during operation thereof.

15. A saw blade for cutting bone including a base portion configured for attachment with a driver, the saw blade comprising:
a body portion including an inside edge and an outside edge and having a length extending from the base portion to a free end of the body portion, the body portion enclosing at least part of an open area adjacent the base portion; and
a cutting edge having a width extending from the inside edge to the outside edge and disposed on the body at the free end thereof and adjacent to the open area such that at least a portion of the cutting edge is disposed toward the base portion,
wherein the inside edge includes a first curve with a first radius and the outside edge includes a second curve with a second radius, each of the first and second curves having a center external to the body in the open area side of the body, and
wherein at least a portion of the first curve of the inside edge and at least a portion of the second curve of the outside edge include a common radius of curvature.

16. A saw blade for cutting bone including a base portion configured for attachment with a driver, the saw blade comprising:
a body portion having a length extending from the base portion to a free end of the body portion, the body portion enclosing at least part of an open area adjacent the base portion; and
a cutting edge disposed on an end surface on the free end of the body portion, the end surface extending from an inside edge of the body to an outside edge of the body and adjacent to the open area such that at least a portion of the cutting edge is disposed toward the base portion; and
wherein the cutting edge is orthogonal to an axis passing through the cutting edge and a center of rotation of the base portion.

Assignees

• Servidio Damon J
• Howmedica Osteonics Corp

Inventors

• Servidio Damon J

Classifications

• A61B17/14 Primary

  Surgical saws ({A61B17/1637 takes precedence;} dental saws for teeth A61C3/12) · CPC title

• A61B17/142 Primary

  with reciprocating saw blades, e.g. with cutting edges at the distal end of the saw blades · CPC title