Saw blade

Patent metadata

Field	Value
Publication number	US-11324517-B2
Application number	US-201816618889-A
Country	US
Kind code	B2
Filing date	Jun 11, 2018
Priority date	Jun 12, 2017
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A saw blade of a bone saw machine includes a distally arranged or configured row of saw teeth and a proximally arranged or configured coupling region for coupling the saw blade with an oscillating rotating tool receptacle of the bone saw machine. The saw blade is designed with two counter-rotating curvatures or bends approximately in the manner of an S shape.

First claim

The invention claimed is:

1. A saw blade for a bone saw machine comprising: a coupling region defining a coupling or inserting direction for coupling or inserting the saw blade with/into a tool receptacle of the bone saw machine rotating about an axis of rotation in an oscillating manner, and comprising a row of saw teeth arranged or configured at a distal front edge of the saw blade in such way that a central axis thereof aligned perpendicularly to the row of saw teeth substantially intersects the coupling region, when the saw blade is coupled to or inserted in the tool receptacle, wherein the central axis and the coupling or inserting direction are at an angle between 0° and 180° relative to each other,
the saw blade being designed with two counter-rotating curvatures or bends approximately in an S shape,
the saw blade including, by virtue of the two counter-rotating curvatures or bends, a first distal leg and a second proximal leg that are aligned at an angle between 0° and 180° relative to each other,
the first distal leg and second proximal leg of the saw blade being interconnected via an intermediate web, and
the first distal leg being configured to be linear and having a distal front edge configured or provided with the row of saw teeth, the central axis of the row of saw teeth being the central axis of the first distal leg, and the second proximal leg being equally configured to be linear and including or forming the coupling region in its proximal end portion.

2. The saw blade according to claim 1 , wherein the row of saw teeth is aligned substantially tangentially with an orbit along which it reciprocates with an oscillating movement of rotation of the tool receptacle in a condition of being inserted in the tool receptacle, for which purpose the intermediate web has or will have such length that the central axis of the first distal leg substantially intersects the coupling region when the saw blade is coupled with or inserted in the tool receptacle.

3. The saw blade according to claim 2 , wherein the row of saw teeth is curved, wherein the radius of curvature thereof substantially corresponds to that of the orbit along which it reciprocates in a condition of being inserted in the tool receptacle, while the tool receptacle rotates in an oscillating manner.

4. The saw blade according to claim 2 , wherein the intermediate web has or will have such length that the central axis of the first distal leg substantially intersects the axis of rotation of the tool receptacle when the saw blade is coupled with or inserted in the tool receptacle.

5. The saw blade according to claim 1 , wherein the saw blade is a medical or surgical tool of a minimally invasive design.

6. The saw blade according to claim 1 , wherein the row of saw teeth has a length of less than/equal to 20 mm.

7. The saw blade according to claim 1 , wherein the row of saw teeth is shorter than a length of the distal front edge of the saw blade at which the row of saw teeth is configured or arranged so that the distal front edge comprises untoothed remaining portions at each end of the row of saw teeth.

8. The saw blade according to claim 7 , wherein the untoothed remaining portions are convexly rounded in a distal direction and in a lateral direction and thus merge into respective lateral edges of the saw blade in a curved shape.

9. A surgical bone saw apparatus comprising a bone saw machine which includes a drive accommodated in a machine housing, wherein the drive is operatively connected to a tool receptacle for oscillating rotation thereof, which tool receptacle is supported on a distal end of the machine housing, and comprising a saw blade which is exchangeably coupled to or inserted in the tool receptacle such that the saw blade rotates together with the tool receptacle in an oscillating manner, wherein the saw blade comprises features according to claim 1 .

10. The saw blade according to claim 1 , wherein the central axis of the distal front edge of the saw blade which is aligned perpendicularly to the row of saw teeth substantially intersects the axis of rotation, when the saw blade is coupled to or inserted in the tool receptacle.

11. The saw blade according to claim 1 , wherein the first distal leg and the second proximal leg of the saw blade are interconnected in one material piece.

12. A saw blade for a bone saw machine comprising: a coupling region arranged or configured proximally as well as defining a coupling or inserting direction for coupling or inserting the saw blade with/into a tool receptacle of the bone saw machine rotating about an axis of rotation in an oscillating manner, and comprising a row of saw teeth arranged or configured at a distal front edge of the saw blade in such way that a central axis thereof aligned perpendicularly to the row of saw teeth substantially intersects the coupling region, when the saw blade is coupled to or inserted in the tool receptacle, wherein the central axis and the coupling or inserting direction are at an angle between 0° and 180° relative to each other,
the saw blade including a first distal leg and a second proximal leg that are aligned at an angle between 0° and 180° relative to each other,
the first distal leg being configured to be linear and having a distal front edge configured or provided with the row of saw teeth, the central axis of the row of saw teeth being the central axis of the first distal leg, and the second proximal leg being equally configured to be linear and including or forming the coupling region in its proximal end portion.

Assignees

• Aesculap Ag

Inventors

• Schaz Uwe
• Mattes Uwe
• Schäfer Markus
• Moser Elke

Classifications

• B23D61/006

  Oscillating saw blades · CPC title

• A61B17/142 Primary

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