Signal forwarding or transmission in a surgical instrument

Patent metadata

Field	Value
Publication number	US-12390230-B2
Application number	US-202117793607-A
Country	US
Kind code	B2
Filing date	Jan 19, 2021
Priority date	Jan 20, 2020
Publication date	Aug 19, 2025
Grant date	Aug 19, 2025

Abstract

A rolling bearing, in particular a ball bearing, in particular for use in a surgical instrument, which is designed for forwarding or transmitting electrical signals and has for this purpose at least one signal line or signal path integrated in the rolling bearing. A sleeve, in particular for use in a surgical instrument, is designed for forwarding or transmitting electrical signals and has for this purpose at least one signal line or signal path integrated in the sleeve. A surgical instrument, in particular a hand-held milling cutter, includes at least one ball bearing and at least one sleeve, each having a respective method of production.

First claim

The invention claimed is:

1. A surgical instrument comprising at least one roller bearing configured for forwarding or transmitting electrical signals, the at least one roller bearing having at least one roller bearing signal line or roller bearing signal path integrated in the at least one roller bearing.

2. The surgical instrument according to claim 1 , wherein the at least one roller bearing signal line or roller bearing signal path comprises at least one roller bearing signal line that is axially fixed and inserted into a bore provided in the at least one roller bearing and extending over an entire axial length of the at least one roller bearing.

3. The surgical instrument according to claim 2 , wherein the at least one roller bearing signal line protrudes in an axial direction of the at least one roller bearing so that the at least one roller bearing signal line is configured for contacting or plug connection with a sleeve.

4. The surgical instrument according to claim 1 , further comprising at least one sleeve configured for forwarding or transmitting electrical signals and having at least one sleeve signal line or sleeve signal path integrated in the at least one sleeve.

5. The surgical instrument according to claim 4 , wherein the at least one sleeve is configured for forwarding or transmitting electrical signals in an axial direction between a first axial end and a second axial end of the at least one sleeve and/or in a radial direction between an inner shell surface and an outer shell surface of the at least one sleeve.

6. The surgical instrument according to claim 4 , wherein an outer shell surface of the at least one sleeve has at least one groove extending over an entire axial length of the at least one sleeve, and the at least one sleeve signal line or sleeve signal path is provided in the at least one groove.

7. The surgical instrument according to claim 6 , wherein the at least one sleeve signal line or sleeve signal path is shifted inwards with respect to the outer shell surface of the at least one sleeve, so that the at least one sleeve signal line or sleeve signal path is provided only in a lower region of the at least one groove, wherein an insulator is arranged above the at least one sleeve signal line or sleeve signal path.

8. The surgical instrument according to claim 4 , wherein the at least one sleeve signal line or sleeve signal path comprises a first sleeve signal line or sleeve signal path on an inner shell surface of the at least one sleeve.

9. The surgical instrument according to claim 8 , wherein the at least one sleeve signal line or sleeve signal path further comprises a second sleeve signal line or sleeve signal path provided on an outer shell surface of the at least one sleeve, and wherein the first sleeve signal line or sleeve signal path is connected in an electrically conducting manner to the second sleeve signal line or sleeve signal path.

10. The surgical instrument according to claim 4 , wherein an electric contact and/or a read-out antenna is/are connected to the at least one sleeve signal line or sleeve signal path in an electrically conducting manner.

11. The surgical instrument according to claim 4 , wherein the at least one sleeve comprises a first sleeve and a second sleeve placed inside the first sleeve.

12. The surgical instrument according to claim 4 , wherein the at least one sleeve comprises a non-conductive material, an outer shell surface, an inner shell surface, and a conductive signal line or signal path, and wherein the conductive signal line or signal path is a conductive material that is metallized or coated on the outer shell surface and/or on the inner shell surface.

13. The surgical instrument according to claim 4 , wherein the at least one roller bearing and the at least one sleeve are arranged adjacent to each other in the surgical instrument such that the at least one roller bearing signal line or roller bearing signal path is connected to the at least one sleeve signal line or sleeve signal path by a plug connection, such that the surgical instrument is configured for signal forwarding or signal transmission between the at least one roller bearing and the at least one sleeve.

14. A method for manufacturing a roller bearing comprising the steps of:
providing at least one continuous bore running in an axial direction of the roller bearing;
inserting a signal line into the at least one continuous bore; and
providing an axial fixation of the signal line in the at least one continuous bore.

15. A method of forwarding or transmitting electrical signals in a surgical instrument, the method comprising the step of providing a roller bearing with at least one roller bearing signal line or roller bearing signal path integrated in the roller bearing.

Assignees

• Aesculap Ag

Inventors

• Hoegerle Roland-Alois
• Lenzenhuber Frederick
• Buerk André

Classifications

• F16C19/54 Primary

  Systems consisting of a plurality of bearings with rolling friction (spindle bearings F16C35/08) · CPC title

• F16C2202/32

  Conductivity · CPC title

• F16C2316/10

  in medical appliances, e.g. in diagnosis, dentistry, instruments, prostheses, medical imaging appliances · CPC title

• F16C19/06

  with a single row or balls · CPC title

• F16C33/586

  outside the space between the races, e.g. end faces or bore of inner ring · CPC title