Surgical instrument with indicator

• US 8,317,073 B2
• Filed: 02/16/2012
• Issued: 11/27/2012
• Est. Priority Date: 09/03/2008
• Status: Expired due to Fees

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Milliman, Keith L., Hessler, Thomas R., Paul, Stephen R., Wenchell, Thomas
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US13/397,794
• Publication Number:
  US 20120145766A1
• Time in Patent Office: 285 Days
• Field of Search: 227/19, 227/175.2, 227/175.1, 227/176.1, 227/180.1, 227/181.1
• US Class Current: 227/175.1
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 2017/00128 related to intensity or progress of surgical action
• CPC Class Codes: A61B 2090/0807 Indication means
• CPC Class Codes: A61B 2090/0811 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

Abstract

A surgical stapling instrument including a handle assembly, an elongated body portion extending distally from the handle assembly, and a head portion. The handle assembly includes a firing trigger and a firing indicator. The firing trigger is movable between a first non-actuated position and a second actuated position. The head portion is disposed adjacent a distal portion of the elongated body portion and includes an anvil assembly and a shell assembly. The anvil assembly is movable in relation to the shell assembly between spaced and approximated positions. Engagement structure of the firing trigger moves the firing indicator from a first position to a second position when the firing trigger is moved from its first non-actuated position toward its second actuated position.

Claims

1. A surgical stapling instrument, comprising:

a handle assembly including a firing trigger and a firing indicator, the firing trigger being movable between a first non-actuated position and a second actuated position, the firing trigger including engagement structure extending from a proximal region of the firing trigger;

an elongated body portion extending distally from the handle assembly;

a head portion disposed adjacent a distal portion of the elongated body portion and including an anvil assembly and a shell assembly, the anvil assembly being movable in relation to the shell assembly between spaced and approximated positions;

an approximation mechanism for moving the anvil assembly between spaced and approximated positions; and

a firing mechanism for firing fasteners from the shell assembly, wherein the firing indicator is movable independent of movement of the approximation mechanism, and the engagement structure of the firing trigger moves the firing indicator from a first position to a second position when the firing trigger is moved from its first non-actuated position toward its second actuated position.

2. The surgical stapling instrument of claim 1, wherein the handle assembly includes a stationary handle and the firing indicator is rotatable with respect to the stationary handle.

3. The surgical stapling instrument of claim 1, wherein the handle assembly includes a stationary handle and the engagement structure includes a tab, the tab extending towards the stationary handle and is configured to make initial contact with the firing indicator when the firing trigger is moved to its second actuated position.

4. The surgical stapling instrument of claim 3, wherein a surface of the tab is angled with respect to a longitudinal axis defined by the firing trigger.

5. The surgical stapling instrument of claim 1, wherein the firing indicator includes firing indicia thereon and wherein the indicia is visible to a user when the firing indicator is in its second position.

6. The surgical stapling instrument of claim 1, wherein the handle assembly includes a window which enables a user to view a portion of the firing indicator.

7. The surgical stapling instrument of claim 1, wherein the firing indicator is configured to remain in its second position after the firing trigger has been moved to its second actuated position.

8. The surgical stapling instrument of claim 7, wherein the firing indicator includes a detent positionable in a recess in the handle assembly to maintain the firing indicator in the second position.

9. The surgical stapling instrument of claim 8, wherein the firing indicator is reset by manual rotation of the firing indicator in a proximal direction to override the detent.

10. The surgical stapling instrument of claim 1, wherein the firing indicator is configured to move from its first position towards its second position in response to a single actuation stroke of the firing trigger.

11. The surgical stapling instrument of claim 1, further comprising an approximation indicator to indicate the stapling instrument is in a fire-ready position.

12. The surgical stapling instrument of claim 11, wherein the approximation indicator provides visual indication to a user of the device.

13. A surgical stapling instrument, comprising:

a handle assembly including a firing trigger, the firing trigger being movable between a first non-actuated position and a second actuated position;

an elongated body portion extending distally from the handle assembly;

a head portion disposed adjacent a distal portion of the elongated body portion and including an anvil assembly and a shell assembly, the anvil assembly being movable in relation to the shell assembly between spaced and approximated positions;

an approximation indicator disposed in mechanical cooperation with the handle assembly, the approximation indicator being configured to move from a first position towards a second position in response to the anvil assembly moving in relation to the shell assembly towards its approximated position; and

a firing indicator disposed in mechanical cooperation with the handle assembly and independent from the approximation indicator and independent of movement of the anvil assembly toward the approximation position, the firing indicator being configured to move from a first position towards a second position in response to the firing trigger moving towards its second actuated position.

14. The surgical stapling instrument of claim 13, wherein the firing indicator is configured to move from its first position towards its second position in response to a single actuation stroke of the firing trigger.

15. The surgical stapling instrument of claim 13, wherein the firing indicator is maintained in the second position until manually released.

16. The surgical stapling instrument of claim 13, wherein the handle assembly includes a stationary handle and the firing indicator is rotatable with respect to the stationary handle.

17. The surgical stapling instrument of claim 13, wherein the approximation indicator provides visual indication to a user of the device.