Methods and systems for detecting staple cartridge misfire or failure

Patent metadata

Field	Value
Publication number	US-11096687-B2
Application number	US-201916275858-A
Country	US
Kind code	B2
Filing date	Feb 14, 2019
Priority date	Feb 15, 2011
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

A surgical stapler system may include a surgical instrument comprising an end effector configured to receive a removable staple cartridge, and an actuation mechanism operably coupled to actuate the end effector to perform a stapling procedure. The surgical stapler system also may include a drive system operably coupled to transmit an actuation force to the actuation mechanism and a controller operably coupled to the drive system. The controller may be configured to measure an actuation force transmitted by the drive system to the actuation mechanism, and control continued transmission of the actuation force based on a comparison of the measured actuation force to a range defined from a minimum threshold actuation force to a maximum threshold actuation force.

First claim

What is claimed is:

1. A system, comprising:
a surgical instrument comprising:
an end effector comprising a first jaw and a second jaw, the second jaw including a plurality of staples, and
an actuation mechanism operably coupled to at least one of the first jaw and the second jaw of the end effector to perform a clamping procedure;

a drive system configured to apply an actuation force to the actuation mechanism; and
a controller operably coupled to the drive system, the controller configured to:
measure the actuation force applied by the drive system to the actuation mechanism, and
control continued application of the actuation force based on a comparison of the measured actuation force to a threshold value.

2. The system of claim 1 , wherein the controller is further configured to terminate the continued application of the actuation force if the measured actuation force is less than the threshold value.

3. The system of claim 2 , further comprising:
a user interface operably coupled to the controller, the user interface being configured to provide an indication of a clamping procedure failure in response to the measured actuation force being less than the threshold value.

4. The system of claim 3 , wherein the user interface is further configured to provide feedback regarding a risk of failure of the clamping procedure based on a proximity of the measured actuation force to the threshold value.

5. The system of claim 3 , wherein the user interface comprises a display configured to output an image of the end effector during a surgical procedure.

6. The system of claim 1 , further comprising a sensor that is operably coupled to the drive system, the sensor being configured to measure the actuation force.

7. The system of claim 1 , wherein the end effector further comprises a cutting blade, the controller being configured to control actuation of the cutting blade based on the comparison of the measured actuation force to the threshold value.

8. The system of claim 7 , wherein the controller is configured to terminate the actuation of the cutting blade in response to the measured actuation force being less than the threshold value.

9. The system of claim 1 , wherein the controller is further configured to control actuation of a staple firing mechanism of the end effector based on the comparison of the measured actuation force to the threshold value.

10. The system of claim 9 , wherein the controller is configured to terminate the actuation of the staple firing mechanism in response to the measured actuation force being less than the threshold value.

11. The system of claim 1 , wherein:
the threshold value is a first threshold value; and
the controller is further configured to:
control the continued application of the actuation force based on a comparison of the measured actuation force to a second threshold value, and
terminate the continued application of the actuation force if the measured actuation force is greater than the second threshold value.

12. The system of claim 11 , further comprising:
a user interface operably coupled to the controller, the user interface being configured to provide an indication of a clamping procedure failure in response to the measured actuation force being greater than the second threshold value.

13. The system of claim 12 , wherein the user interface is further configured to provide feedback regarding a risk of failure of the clamping procedure based on a proximity of the measured actuation force to the second threshold value.

14. The system of claim 12 , wherein the user interface comprises a display configured to output an image of the end effector during a surgical procedure.

15. The system of claim 11 , wherein the end effector further comprises a cutting blade, the controller being configured to control actuation of the cutting blade based on the comparison of the measured actuation force to the second threshold value.

16. The system of claim 15 , wherein the controller is configured to terminate the actuation of the cutting blade in response to the measured actuation force being greater than the second threshold value.

17. The system of claim 11 , wherein the controller is further configured to control actuation of a staple firing mechanism of the end effector based on the comparison of the measured actuation force to the second threshold value.

18. The system of claim 17 , wherein the controller is configured to terminate the actuation of the staple firing mechanism in response to the measured actuation force being greater than the second threshold value.

19. The system of claim 1 , wherein:
the actuation mechanism is a motor, and
the actuation force is a rotational force output by the motor.

20. The system of claim 1 , wherein the second jaw is a stationary jaw and the first jaw rotates relative to the second jaw in order to perform the clamping procedure.

21. The system of claim 20 , further comprising a staple cartridge received by the second jaw, the staple cartridge comprising the plurality of staples.

Assignees

• Intuitive Surgical Operations

Inventors

• Flanagan Patrick
• Weir David W

Classifications

• A61B2090/0811

  for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument · CPC title

• A61B2017/07271

  characterised by its cartridge · CPC title

• A61B2017/00022

  Sensing or detecting at the treatment site · CPC title

• A61B2017/00115

  with audible or visual output · CPC title

• A61B2090/064

  for measuring force, pressure or mechanical tension · CPC title