Systems and methods for monitoring a surgical procedure with critical regions

Patent metadata

Field	Value
Publication number	US-9901356-B2
Application number	US-201414776599-A
Country	US
Kind code	B2
Filing date	Mar 14, 2014
Priority date	Mar 14, 2013
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

Systems and methods for monitoring an operative site during a surgical procedure using a computer controlled surgical device. In general the methods include the steps of processing one or more defined cutting paths having one or more cut regions; determining a correlation between the cut region and one or more critical regions to generate an alert, wherein the alert indicates a movable end-effector is within a defined proximity of the critical region; and requiring a user acknowledgment of the alert to allow processing of the cutting path to continue. Also described herein are systems and methods for minimizing user fatigue during a semi-computer controlled surgical procedure. In general the methods includes the step of requiring a user generated acknowledgment in response to a computer generated alert, wherein the user acknowledgment is generated using a user controller, the user controller being minimally intrusive to the user experience.

First claim

What is claimed is:

1. A method for monitoring an operative site during a surgical procedure using a computer controlled surgical device, the method comprising:
processing a defined cutting path having a cut region in a computer of the computer controlled surgical device;
determining a correlation between the cut region and one or more critical regions to generate an alert indicative of a movable end-effector being within a defined proximity of the one or more critical regions;
compromising a subject tissue in the cut region with the computer controlled surgical device and exclusive of the one or more critical regions; and
requiring a user acknowledgment of the alert to allow processing of the cutting path to continue.

2. The method of claim 1 , wherein the critical regions are determined based on at least one of: (a) known anatomical areas where arteries, veins, nerve bundles, cartilage, bone of a specific density or type, and tendons are located and (b) image-based processing that indicates arteries, veins, nerve bundles, cartilage, bone of a specific density or type, and tendons.

3. The method of claim 1 , wherein the user acknowledgement is a command that includes at least one of (a) continue, (b) skip region, and (c) pause.

4. The method of claim 1 , wherein the user acknowledgement is a command of continue and receipt of the continue command before an effector of the computer controlled surgical device enters the one or more critical regions allows processing of the cutting path to continue into the one or more critical regions without interruption.

5. The method of claim 1 , wherein processing the cutting path is interrupted if the user acknowledgement is not received.

6. The method of claim 1 , further comprising:
generating a cut file including cutting paths; and
storing the cut file in a tangible medium.

7. The method of claim 1 , further comprising at least one of:
generating a 3-D model of the operative structure; and
generating a 3-D critical regions model with the critical regions.

8. The method of claim 7 , wherein the 3-D model of the operative structure and the 3-D critical regions model are generated from a same source of image data.

9. The method of claim 7 , wherein the critical regions are determined before processing the defined cutting path.

10. The method of claim 7 , wherein the cutting path is processed in parallel with determining the critical regions.

11. The method of claim 7 , wherein one or more critical regions is identified after the processing of the cutting path has begun.

12. The method of claim 7 , wherein generating the 3-D critical regions model includes: performing a 3D analysis using a computer controlled device to distinguish critical regions from non-critical regions.

13. The method of claim 12 , wherein the 3D analysis is performed with a semi-automatic segmentation of imaging data.

14. The method of claim 12 , wherein the 3D analysis is performed by a manual method without artificial intelligence.

15. The method of claim 1 , wherein the one or more critical regions are stored in a tangible medium as 3D volumes or points in space.

16. The method of claim 1 , wherein the one or more critical regions are selected manually and intraoperatively by the user.

17. The method of claim 1 , wherein the alert includes at least one of a visual or audio output.

18. The method of claim 1 , wherein the acknowledgement is received as a vigilance control button on a surgeon input device, such as a pendant or foot pedal.

19. The method of claim 1 , wherein the compromising of the subject tissue includes at least one of an incision, cutting, milling, drilling, puncturing, or piercing.

20. The method of claim 1 , wherein the cut region is obscured from a user view.

21. The method of claim 1 , wherein the correlation and alert is based on arm movement speed, feed rate, and time.

22. The method of claim 1 , wherein the user acknowledgment is generated using a user controller.

23. The method of claim 22 , wherein the user controller requires a physical response by the user only in the one or more critical regions.

Assignees

• Think Surgical Inc

Inventors

• Shen Feimo
• Mun In K
• Miller Denise A
• Wei Bryan Z
• Morash James P

Classifications

• A61B2017/1602

  Mills · CPC title

• A61B2017/00973

  pedal-operated · CPC title

• A61B2017/320052

  Guides for cutting instruments · CPC title

• G05B2219/45168

  Bone prosthesis · CPC title

• A61B17/3403

  Needle locating or guiding means · CPC title