Surgical instrument with indicator

• US 8,132,703 B2
• Filed: 02/01/2010
• Issued: 03/13/2012
• Est. Priority Date: 09/03/2008
• Status: Expired due to Fees

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Milliman, Keith L., Hessler, Thomas R., Paul, Stephen R., Wenchell, Thomas
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US12/697,519
• Publication Number:
  US 20100133319A1
• Time in Patent Office: 771 Days
• Field of Search: 227/19, 227/176.1, 227/175.1, 227/180.1, 227/181.1, 227/175.2
• 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;

an elongated body portion extending distally from the handle assembly; and

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;

wherein 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, and wherein the firing indicator includes a pawl, the firing trigger being configured to engage the pawl 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 instrument of claim 2, wherein the firing trigger is rotatable within a first plane in a first direction, and wherein the firing indicator is rotatable within the first plane in a second direction, the first direction being opposite the second direction.

4. The surgical stapling instrument of claim 1, wherein the pawl and the firing indicator are monolithically formed.

5. The surgical stapling instrument of claim 1, wherein the pawl extends from a surface of the firing indicator towards the firing trigger.

6. 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.

7. The surgical stapling instrument of claim 6, wherein a surface of the tab is angled with respect to a longitudinal axis defined by the firing trigger.

8. 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.

9. 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.

10. The surgical stapling instrument of claim 9, wherein the window is disposed adjacent a proximal portion of the handle assembly.

11. 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.

12. The surgical stapling instrument of claim 11, wherein the firing indicator includes a detent positionable in a recess in the handle assembly to maintain the firing indicator in the second position.

13. 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.

14. The surgical instrument of claim 1, wherein the firing trigger is rotatable about a pivot, and wherein the firing indicator is disposed proximally of the pivot.

15. 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, 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,

wherein the firing indicator includes a pawl and the firing trigger is configured to engage the pawl of the firing indicator when the firing trigger is moved from its first non-actuated position toward its second actuated position.

16. The surgical stapling instrument of claim 15, 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.

17. The surgical stapling instrument of claim 15, wherein the handle assembly includes a stationary handle and the firing indicator is rotatable with respect to the stationary handle.

18. The surgical stapling instrument of claim 15, wherein a surface of the tab is angled with respect to a longitudinal axis defined by the firing trigger.