Variable-thickness-handle driver instrument

Patent metadata

Field	Value
Publication number	US-11547460-B2
Application number	US-202016746024-A
Country	US
Kind code	B2
Filing date	Jan 17, 2020
Priority date	Jan 17, 2020
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

An orthopaedic driving instrument including a first end portion, a second end portion opposite the first end portion, and a central portion, intermediate the first and second end portions, comprising a central section having an outer diameter representing a maximum outer diameter of the driving instrument. The first end comprises a first driving interface sized and shaped to, in operation of the instrument, engage a screw interface of a screw for applying torque to the screw. The second end comprises a second driving interface sized and shaped as the size and shape of the first driving interface.

First claim

What is claimed is:

1. An orthopaedic driving instrument comprising:
a first end portion;
a second end portion opposite the first end portion; and
a central portion, intermediate the first and second end portions, comprising a central section having an outer diameter representing a maximum outer diameter of the driving instrument;
wherein the first end comprises a first driving interface sized and shaped to, in operation of the instrument, engage a screw interface of a screw for applying torque to the screw;
wherein the second end comprises a second driving interface sized and shaped as the size and shape of the first driving interface;
wherein the first end portion comprises a first section having a first outer diameter;
wherein the second end portion comprises a second section having a second outer diameter equal to the first outer diameter;
wherein at least one of the first and second outer diameters has a circular cross-sectional configuration,
wherein the first end portion comprises a third section having a third outer diameter equal to the first outer diameter;
wherein the second end portion comprises a fourth section having a fourth outer diameter equal to the first outer diameter;
wherein the first end portion comprises a fifth section having a fifth outer diameter smaller than the first outer diameter intermediate the first section and the third section; and
wherein the second end portion comprises a sixth section having a sixth outer diameter smaller than the first outer diameter intermediate the second section and the fourth section.

2. The orthopaedic driving instrument of claim 1 wherein outer surfaces of each of the central, first, second, third, fourth, fifth, and sixth sections are textured.

3. The orthopaedic driving instrument of claim 1 wherein:
the first end portion comprises a first reduced-diameter section having an outer diameter, smaller than the first outer diameter, intermediate the maximum outer diameter of the central section and the first outer diameter of the first section; and
the second end portion comprises a second reduced-diameter section having an outer diameter, equal to the outer diameter of the first reduced-diameter section, intermediate the maximum outer diameter of the central section and the second outer diameter of the second section.

4. The orthopaedic driving instrument of claim 3 wherein:
the first end portion comprises a third reduced-diameter section having an outer diameter, smaller than the first outer diameter, intermediate the first outer diameter and the third outer diameter; and
the second end portion comprises a fourth reduced-diameter section having an outer diameter intermediate the second outer diameter and the fourth outer diameter.

5. The orthopaedic driving instrument of claim 1 wherein the instrument is symmetric, the first end portion having a first size and shape and the second end portion having a second size and shape matching the first size and shape.

6. The orthopaedic driving instrument of claim 1 wherein the first driving interface is identical to the second driving interface.

7. The orthopaedic driving instrument of claim 1 wherein the driving instrument extends along a longitudinal axis between the first end portion and the second end portion, the central portion having a length along the longitudinal axis that is greater than a length of the first driving interface along the longitudinal axis and a length of the second driving interface along the longitudinal axis.

8. An orthopaedic driving instrument comprising:
a first end portion;
a second end portion opposite the first end portion; and
a central portion, intermediate the first and second end portions, comprising a central section having an outer diameter representing a maximum outer diameter of the driving instrument;
wherein the first end comprises a first driving interface, and the second end comprises a second driving interface, the first driving interface being identical to the second driving interface;
wherein the first end portion comprises a first section having a first outer diameter;
wherein the second end portion comprises a second section having a second outer diameter equal to the first outer diameter;
wherein the first end portion comprises a third section having a third outer diameter equal to the first outer diameter;
wherein the second end portion comprises a fourth section having a fourth outer diameter equal to the first outer diameter;
wherein the first end portion comprises a fifth section having a fifth outer diameter smaller than the first outer diameter intermediate the first section and the third section; and
wherein the second end portion comprises a sixth section having a sixth outer diameter smaller than the first outer diameter intermediate the second section and the fourth section.

9. The orthopaedic driving instrument of claim 8 wherein:
the first end portion comprises a first reduced-diameter section having an outer diameter, smaller than the first outer diameter, intermediate the maximum outer diameter of the central section and the first outer diameter of the first section; and
the second end portion comprises a second reduced-diameter section having an outer diameter, equal to the outer diameter of the first reduced-diameter section, intermediate the maximum outer diameter of the central section and the second outer diameter of the second section.

10. The orthopaedic driving instrument of claim 8 wherein outer surfaces of the central, first, second, third, fourth, fifth, and sixth sections are textured.

11. The orthopaedic driving instrument of claim 8 wherein the instrument is symmetric, the first end portion having a first size and shape and the second end portion having a second size and shape matching the first size and shape.

12. An orthopaedic driving instrument comprising:
a first end portion;
a second end portion opposite the first end portion; and
a central portion, intermediate the first and second end portions, comprising a central section having an outer diameter representing a maximum outer diameter of the driving instrument;
wherein:
the first end portion comprises a first section having a first outer diameter;
the second end portion comprises a second section having a second outer diameter equal to the first outer diameter, wherein at least one of the first and second outer diameters has a circular cross-sectional configuration;
the first end portion comprises a first reduced-diameter section having an outer diameter, smaller than the first outer diameter, intermediate the maximum outer diameter of the central section and the first outer diameter of the first section; and
the second end portion comprises a second reduced-diameter section having an outer diameter, equal to the outer diameter of the first reduced-diameter section, intermediate the maximum outer diameter of the central section and the second outer diameter of the second section,
wherein the first end portion comprises a third section having a third outer diameter equal to the first outer diameter;
wherein the second end portion comprises a fourth section having a fourth outer diameter equal to the first outer diameter;
wherein the first end portion comprises a fifth section having a fifth outer diameter smaller than the first outer diameter intermediate the first section and the third section; and
wherein the second end portion comprises a sixth section having a sixth outer diameter smaller than the first outer diameter intermediate the second section and the fourth section.

13. The orthopaedic driving instrument of claim 12 wherein:
the first end portion

Assignees

• Warsaw Orthopedic Inc

Inventors

• Perra Joseph H

Classifications

• B25B15/004

  characterised by cross-section · CPC title

• A61B2017/564

  Methods for bone or joint treatment · CPC title

• A61B2090/031

  torque limiting · CPC title

• B25G1/005

  for screwdrivers, wrenches or spanners with additional levers, e.g. for increasing torque · CPC title

• A61B17/7064 Primary

  Devices acting on, attached to, or simulating the effect of, vertebral facets; Tools therefor · CPC title