Devices and methods for bending or cutting implants

Patent metadata

Field	Value
Publication number	US-11033314-B2
Application number	US-201816100958-A
Country	US
Kind code	B2
Filing date	Aug 10, 2018
Priority date	May 27, 2015
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

Devices and methods for bending or cutting implants are disclosed herein. In some embodiments, an instrument can include a rotatable drive shaft that urges first and second portions of a modular bending or cutting template toward one another to bend or cut an implant disposed between the template portions. A linkage assembly can be included to provide a mechanical advantage in urging the template portions toward one another. In some embodiments, an instrument can include a rotatable drive shaft that, depending on direction of rotation, pushes or pulls a first modular template portion with respect to a second modular template portion to bend an implant disposed between the template portions in one direction or another direction. In some embodiments, an instrument can include a worm drive that rotates a cutting wheel with respect to a cutting plate to cut an implant inserted through openings formed in the cutting wheel and the cutting plate.

First claim

The invention claimed is:

1. A method of cutting an implant, comprising:
positioning an implant with respect to an instrument such that the implant simultaneously extends through an opening formed in a cutting wheel of the instrument and through an opening formed in a cutting plate of the instrument; and
rotating a drive shaft of the instrument to rotate the cutting wheel with respect to the cutting plate and thereby apply a shear force to the implant to cut the implant,
wherein rotating the drive shaft rotates a worm screw of the drive shaft that engages a worm gear of the cutting wheel to rotate the cutting wheel.

2. The method of claim 1 , wherein positioning the implant comprises selecting the opening in the cutting wheel in which the implant is positioned from among a plurality of openings formed in the cutting wheel.

3. The method of claim 2 , wherein the opening in the cutting wheel is selected based on a size of the implant.

4. The method of claim 2 , wherein the opening in the cutting wheel is selected based on alignment of the opening with the opening formed in the cutting plate.

5. A method of cutting an implant, comprising:
positioning an implant with respect to an instrument such that the implant simultaneously extends through an opening formed in a cutting wheel of the instrument and through an opening formed in a cutting plate of the instrument; and
rotating a drive shaft of the instrument to rotate the cutting wheel with respect to the cutting plate and thereby apply a shear force to the implant to cut the implant,
wherein rotating the drive shaft comprises coupling a housing in which the drive shaft is disposed to a non-rotating component of a power driver, coupling the drive shaft to a rotating component of the power driver, and actuating the power driver to rotate the drive shaft relative to the housing.

6. The method of claim 5 , wherein rotating the drive shaft rotates a worm screw of the drive shaft that engages a worm gear of the cutting wheel to rotate the cutting wheel.

7. The method of claim 5 , wherein positioning the implant comprises selecting the opening in the cutting wheel in which the implant is positioned from among a plurality of openings formed in the cutting wheel.

8. The method of claim 7 , wherein the opening in the cutting wheel is selected based on a size of the implant.

9. The method of claim 5 , wherein the opening in the cutting wheel is selected based on alignment of the opening with the opening formed in the cutting plate.

10. The method of claim 5 , wherein the drive shaft is rotated about a longitudinal axis of the drive shaft and wherein the cutting wheel is rotated about an axis that extends perpendicular to a plane in which the longitudinal axis of the drive shaft lies.

11. A method of cutting an implant, comprising:
positioning an implant with respect to an instrument such that the implant simultaneously extends through an opening formed in a cutting wheel of the instrument and through an opening formed in a cutting plate of the instrument; and
rotating a drive shaft of the instrument to rotate the cutting wheel with respect to the cutting plate and thereby apply a shear force to the implant to cut the implant,
wherein the drive shaft is rotated about a longitudinal axis of the drive shaft and wherein the cutting wheel is rotated about an axis that extends perpendicular to a plane in which the longitudinal axis of the drive shaft lies.

12. The method of claim 11 , wherein rotating the drive shaft rotates a worm screw of the drive shaft that engages a worm gear of the cutting wheel to rotate the cutting wheel.

13. The method of claim 11 , wherein positioning the implant comprises selecting the opening in the cutting wheel in which the implant is positioned from among a plurality of openings formed in the cutting wheel.

14. The method of claim 13 , wherein the opening in the cutting wheel is selected based on a size of the implant.

15. The method of claim 11 , wherein the opening in the cutting wheel is selected based on alignment of the opening with the opening formed in the cutting plate.

16. The method of claim 11 , wherein rotating the drive shaft comprises coupling a housing in which the drive shaft is disposed to a non-rotating component of a power driver, coupling the drive shaft to a rotating component of the power driver, and actuating the power driver to rotate the drive shaft relative to the housing.

Assignees

• Medos Int Sarl

Inventors

• Rouge Renaud
• Defossez Henri
• Chandanson Thibault
• Caulfield Joseph
• Lyness Daniel
• Bootwala Zoher
• O'Neil Michael

Classifications

• A61B17/8863 Primary

  Apparatus for shaping or cutting osteosynthesis equipment by medical personnel · CPC title

• B21D11/00

  Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00 (corrugating or bending into wave form B21D13/00, B21D15/00; flanging B21D19/00); Twisting · CPC title

• B21D7/00

  Bending rods, profiles, or tubes (B21D11/02 - B21D11/18 take precedence; using mandrels or the like B21D9/00) · CPC title