Lockout disabling mechanism

• US 10,194,976 B2
• Filed: 08/25/2014
• Issued: 02/05/2019
• Est. Priority Date: 08/25/2014
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon, LLC (Johnson & Johnson)
• Inventors: Boudreaux, Chad P.
• Primary Examiner(s): Hupczey, Jr., Roland
• Application Number:
  US14/468,037
• Publication Number:
  US 20160051317A1
• Time in Patent Office: 1,625 Days
• Field of Search: 606 52
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 2017/00367 Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
• CPC Class Codes: A61B 2017/2923 Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2018/00607 Coagulation and cutting with the same instrument
• CPC Class Codes: A61B 2018/0091 Handpieces of the surgical instrument or device
• CPC Class Codes: A61B 2018/1455 having a moving blade for cutting tissue grasped by the jaws
• CPC Class Codes: A61B 2090/0801 Prevention of accidental cutting or pricking
• CPC Class Codes: A61B 2090/08021 of the patient or his organs
• CPC Class Codes: H01H 2215/00 Tactile feedback
• CPC Class Codes: H01H 2239/03 Avoiding erroneous switching
• CPC Class Codes: H01H 2300/014 Application surgical instrument
• CPC Class Codes: H01H 9/06 Casing of switch constituted by a handle serving a purpose other than the actuation of the switch, e.g. by the handle of a vacuum cleaner
• CPC Class Codes: H01H 9/286 making use of a removable locking part acting directly on the operating part H01H9/281 takes precedence

Abstract

A surgical instrument is disclosed. The surgical instrument has a handle assembly. The handle assembly has a trigger operatively coupled to a firing plate, an energy button configured to deliver energy to at least one electrode, a lockout element operatively coupled to the energy button, the lockout element configured to prevent operation of the firing plate, and a lockout disabling mechanism configured to disable the lockout element, the lockout disabling mechanism operable between a first position and a second position. When the lockout disabling mechanism is located in the first position, the lockout element is enabled and can be unlocked by the energy button, and wherein when the lockout disabling mechanism is in the second position, the lockout element is disabled.

Claims

1. A surgical instrument, comprising:

a handle assembly comprising;

a trigger operatively coupled to a firing plate;

an energy button configured to deliver energy to at least one electrode;

a lockout element operatively coupled to the energy button, the lockout element configured to transition between an enabled position that prevents operation of the firing plate and a disabled position; and

a lockout disabling mechanism configured to move relative to the lockout element between a first position and a second position, wherein when the lockout disabling mechanism is located in the first position, the lockout element can transition between the enabled position and the disabled position, and wherein when the lockout disabling mechanism moves to the second position, the lockout disabling mechanism engages the lockout element to hold the lockout element in the disabled position;

wherein actuation of actuating the energy button transitions the lockout element from the enabled position to the disabled position when the lockout disabling mechanism is in the first position.

2. The surgical instrument of claim 1, wherein the lockout disabling mechanism comprises:

a button slidably movable between the first position and the second position;

a slider operatively coupled to the button, wherein the slider is slidably movable between the first position and the second position by the button; and

a lever arm having a first end and a second end, the first end coupled to the slider and the second end coupled to the lockout element;

wherein the lever arm disables the lockout element when the slider is slidably moved from the first position to the second position.

3. The surgical instrument of claim 2, wherein the lockout disabling mechanism comprises a lock arm operatively coupled to the lever arm and the lockout element.

4. The surgical instrument of claim 2, wherein the slider comprises a ramped wall portion to engage the first end of the lever arm.

5. The surgical instrument of claim 2, wherein the slider comprises a detent to provide tactile feedback when locking and unlocking the lockout disabling mechanism.

6. The surgical instrument of claim 5, wherein the detent is configured to maintain the slider in a locked position.

7. The surgical instrument of claim 1, wherein the lockout disabling mechanism comprises:

a button rotatably movable between the first position and the second position;

a rotator operatively coupled to the button, wherein the rotator is rotatably movable between the first position and the second position by the button; and

a lever arm having a first end and a second end, the first end coupled to the rotator and the second end coupled to the lockout element;

wherein the lever arm disables the lockout element when the rotator is rotatably moved from the first position to the second position.

8. The surgical instrument of claim 7, wherein the lockout disabling mechanism comprises a lock arm operatively coupled to the lever arm and the lockout element.

9. The surgical instrument of claim 1, wherein the lockout disabling mechanism is operable independently of the energy button.

10. The surgical instrument of claim 1, wherein the disabled position of the lockout element permits operation of the firing plate.

11. A surgical instrument, comprising:

a handle assembly comprising;

a trigger operatively coupled to a trigger plate and a firing plate;

an energy button configured to deliver energy to at least one electrode;

a lockout element operatively coupled to the energy button, the lockout element configured to transition between an enabled position that prevents operation of the firing plate and a disabled position;

a lockout disabling mechanism configured to move relative to the lockout element between a first position and a second position, wherein when the lockout disabling mechanism is located in the first position, the lockout element can transition between the enabled position and the disabled position, and wherein when the lockout disabling mechanism moves to the second position, the lockout disabling mechanism engages the lockout element to hold the lockout element in the disabled position;

wherein actuation of the energy button transitions the lockout element from the enabled position to the disabled position when the lockout disabling mechanism is in the first position;

a shaft assembly comprising a proximal end and a distal end, wherein the shaft assembly is coupled to the handle assembly at the proximal end; and

an end effector coupled to the distal end of the shaft assembly, the end effector comprising;

a jaw assembly, comprising;

a first jaw member; and

a second jaw member, wherein rotation of the trigger plate transitions the jaw assembly between an open configuration and an approximated configuration by moving at least one of the first jaw member and the second jaw member relative to the other one of the first jaw member and the second jaw member; and

a cutting member deployable in response to rotation of the firing plate.

12. The surgical instrument of claim 11, wherein the lockout disabling mechanism comprises:

a button slidably movable between the first position and the second position;

a slider operatively coupled to the button, wherein the slider is slidably movable between the first position and the second position by the button; and

a lever arm having a first end and a second end, the first end coupled to the slider and the second end coupled to the lockout element;

wherein the lever arm disables the lockout element when the slider is slidably moved from the first position to the second position.

13. The surgical instrument of claim 12, wherein the lockout disabling mechanism comprises a lock arm operatively coupled to the lever arm and the lockout element.

14. The surgical instrument of claim 12, wherein the slider comprises a ramped wall portion to engage the first end of the lever arm.

15. The surgical instrument of claim 12, wherein the slider comprises a detent to provide tactile feedback when locking and unlocking the lockout disabling mechanism.

16. The surgical instrument of claim 15, wherein the detent is configured to maintain the slider in a locked position.

17. The surgical instrument of claim 11, wherein the lockout disabling mechanism comprises:

a button rotatably movable between the first position and the second position;

a rotator operatively coupled to the button, wherein the rotator is rotatably movable between the first position and the second position by the button; and

a lever arm having a first end and a second end, the first end coupled to the rotator and the second end coupled to the lockout element;

wherein the lever arm disables the lockout element when the rotator is rotatably moved from the first position to the second position.

18. The surgical instrument of claim 17, wherein the lockout disabling mechanism comprises a lock arm operatively coupled to the lever arm and the lockout element.

19. The surgical instrument of claim 11, wherein the lockout disabling mechanism is operable independently of the energy button.

20. The surgical instrument of claim 11, wherein the disabled position of the lockout element permits operation of the firing plate.

21. A surgical instrument, comprising:

an energy button;

a lockout mechanism configured to transition between an enabled position that prevents a cutting element from being fired and a disabled position; and

a lockout disabling mechanism configured to move relative to the lockout mechanism between a first position and a second position, wherein when the lockout disabling mechanism is located in the first position, the lockout mechanism can be transitioned between the enabled position and the disabled position, and wherein when the lockout disabling mechanism is moved to the second position, the lockout disabling mechanism engages the lockout mechanism to hold the lockout mechanism in the disabled position;

wherein actuation of the energy button transitions the lockout mechanism from the enabled position to the disabled position when the lockout disabling mechanism is in the first position.

22. The surgical instrument of claim 21, wherein the lockout disabling mechanism comprises:

a button slidably movable between the first position and the second position;

a slider operatively coupled to the button, wherein the slider is slidably movable between the first position and the second position by the button; and

a lever arm having a first end and a second end, the first end coupled to the slider and the second end coupled to the lockout mechanism;

wherein the lever arm disables the lockout mechanism when the slider is slidably moved from the first position to the second position.

23. The surgical instrument of claim 22, wherein the lockout disabling mechanism comprises a lock arm operatively coupled to the lever arm and the lockout mechanism;

wherein the slider comprises a ramped wall portion to engage the first end of the lever arm;

wherein the slider comprises a detent to provide tactile feedback when locking and unlocking the lockout disabling mechanism; and

wherein the detent is configured to maintain the slider in a locked position.

24. The surgical instrument of claim 21, wherein the lockout disabling mechanism comprises:

a button rotatably movable between the first position and the second position;

a rotator operatively coupled to the button, wherein the rotator is rotatably movable between the first position and the second position by the button; and

a lever arm having a first end and a second end, the first end coupled to the rotator and the second end coupled to the lockout mechanism;

wherein the lever arm disables the lockout mechanism when the rotator is rotatably moved from the first position to the second position.

25. The surgical instrument of claim 21, wherein the lockout disabling mechanism is operable independently of the energy button.

26. The surgical instrument of claim 21, wherein the disabled position of the lockout mechanism permits the cutting element to be fired.