System and method to improve surgical cutting in the presence of surgical debris

Patent metadata

Field	Value
Publication number	US-11439411-B2
Application number	US-202016880265-A
Country	US
Kind code	B2
Filing date	May 21, 2020
Priority date	May 24, 2019
Publication date	Sep 13, 2022
Grant date	Sep 13, 2022

Abstract

A system for improved surgical cutting in the presence of surgical debris, the system comprising: a surgical cutter comprising a distal end and a proximal end, the distal end of the surgical cutter being configured to cut bone; a debris detection system mounted to the surgical cutter, the debris detection system comprising: a light source for emitting light; a receiver for receiving light emitted from the light source; and a microprocessor for determining a change in a characteristic of the light emitted by the light source and received by the receiver, and for determining the presence and/or amount of surgical debris present at a surgical site using a change in a characteristic of the light emitted by the light source and received by the receiver; and a controller for varying, based on the presence and/or amount of surgical debris present at the surgical site, at least one of (i) an amount of irrigation supplied to the surgical site, (ii) the feed rate of the surgical cutter, (iii) the direction of the surgical cutter, and (iv) the spindle speed of the surgical cutter.

First claim

The invention claimed is:

1. A system for detecting debris at a surgical site, the system comprising:
a cutting tool configured to cut bone; and
a debris detection system comprising:
a light source mounted proximal to the surgical site for emitting light;
a receiver mounted to the cutting tool for receiving light emitted from the light source, wherein the light emitted from the light source passes through debris present at the surgical site before the light is received by the receiver; and
a processor configured to determine a presence and/or amount of debris present at a surgical site using a change in a characteristic of light emitted by the light source and received by the receiver.

2. The system according to claim 1 wherein the processor is configured to determine the presence and/or amount of debris present at the surgical site using a change in intensity of the light received by the receiver.

3. The system according to claim 2 wherein the processor is configured to use a look-up table to determine the presence and/or amount of debris present at the surgical site by looking up, in the look-up table, the change in the intensity of light received by the receiver.

4. The system according to claim 1 wherein the processor is configured to determine the presence and/or amount of debris present at the surgical site using a change in wavelength of the light received by the receiver.

5. The system according to claim 4 wherein the processor is configured to use a look-up table to determine the presence and/or amount of debris present at the surgical site by looking up, in the look-up table, the change in the wavelength of the light received by the receiver.

6. The system of claim 1 further comprising a controller for varying, based on the presence and/or amount of debris present at the surgical site, at least one of (i) an amount of irrigation supplied to the surgical site, (ii) a feed rate of the cutting tool, (iii) a direction of the cutting tool, and (iv) a spindle speed of a cutter associated with the cutting tool.

7. The system of claim 1 wherein the cutting tool comprises a cutter supported by a sleeve, wherein the receiver is mounted to the sleeve of the cutting tool.

8. A system for detecting debris at a surgical site, the system comprising:
a cutting tool configured to cut bone; and
a debris detection system comprising:
a light source mounted proximal to the surgical site for emitting light;
a receiver mounted proximal to the surgical site for receiving light emitted from the light source, wherein the light source is mounted proximal to the surgical site and the receiver is mounted proximal to the surgical site such that light emitted by the light source is reflected off of surgical debris present at the surgical site before the light is received by the receiver; and
a processor configured to determine a presence and/or amount of debris present at a surgical site using a change in a characteristic of light emitted by the light source and received by the receiver.

9. The system according to claim 8 wherein the processor is configured to determine the presence and/or amount of debris present at the surgical site using a change in intensity of the light received by the receiver.

10. The system according to claim 9 wherein the processor is configured to use a look-up table to determine the presence and/or amount of debris present at the surgical site by looking up, in the look-up table, the change in the intensity of light received by the receiver.

11. The system according to claim 9 wherein the processor is configured to determine the presence and/or amount of debris present at the surgical site using a change in wavelength of the light received by the receiver.

12. The system according to claim 11 wherein the processor is configured to use a look-up table to determine the presence and/or amount of debris present at the surgical site by looking up, in the look-up table, the change in the wavelength of the light received by the receiver.

13. The system of claim 8 further comprising a controller for varying, based on the presence and/or amount of debris present at the surgical site, at least one of (i) an amount of irrigation supplied to the surgical site, (ii) a feed rate of the cutting tool, (iii) a direction of the cutting tool, and (iv) a spindle speed of a cutter associated with the cutting tool.

14. A system for detecting debris at a surgical site, the system comprising:
a cutting tool configured to cut bone; and
a debris detection system comprising:
a light source mounted to the cutting tool for emitting light;
a receiver mounted proximal to the surgical site for receiving light emitted from the light source, wherein the light emitted from the light source passes through debris present at the surgical site before the light is received by the receiver; and
a processor configured to determine a presence and/or amount of debris present at a surgical site using a change in a characteristic of light emitted by the light source and received by the receiver.

15. The system according to claim 14 wherein the processor is configured to determine the presence and/or amount of debris present at the surgical site using a change in intensity of the light received by the receiver.

16. The system according to claim 15 wherein the processor is configured to use a look-up table to determine the presence and/or amount of debris present at the surgical site by looking up, in the look-up table, the change in the intensity of light received by the receiver.

17. The system according to claim 14 wherein the processor is configured to determine the presence and/or amount of debris present at the surgical site using a change in wavelength of the light received by the receiver.

18. The system according to claim 17 wherein the processor is configured to use a look-up table to determine the presence and/or amount of debris present at the surgical site by looking up, in the look-up table, the change in the wavelength of the light received by the receiver.

19. The system of claim 14 further comprising a controller for varying, based on the presence and/or amount of debris present at the surgical site, at least one of (i) an amount of irrigation supplied to the surgical site, (ii) a feed rate of the cutting tool, (iii) a direction of the cutting tool, and (iv) a spindle speed of a cutter associated with the cutting tool.

20. The system of claim 14 wherein the cutting tool comprises a cutter supported by a sleeve, wherein the light source is mounted to the sleeve of the cutting tool.

Assignees

• Think Surgical Inc

Inventors

• Forstein Micah
• Zuhars Joel

Classifications

• A61B2034/2051

  Electromagnetic tracking systems · CPC title

• A61B2034/2055

  Optical tracking systems · CPC title

• A61B2217/007

  with irrigation system · CPC title

• A61B34/20 Primary

  Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis · CPC title

• A61B34/76

  Manipulators having means for providing feel, e.g. force or tactile feedback · CPC title