Surgical Stapling Apparatus

• US 20110233260A1
• Filed: 06/10/2011
• Published: 09/29/2011
• Est. Priority Date: 09/23/1997
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Milliman, Keith L., Viola, Frank J., Orban, Joseph P. III, Lehn, Randolph F.
• Granted Patent: US 8,087,563 B2
• Time in Patent Office: Days
• US Class Current: 227/176.1
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/0686 having a forming anvil staying below the tissue during stapling
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 2017/0023 disposable
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/2923 Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2017/2946 Locking means
• CPC Class Codes: A61B 2090/0806 Instrument detectors with a removable part, e.g. working tip
• CPC Class Codes: A61B 2090/0808 for indicating correct assembly of components, e.g. of the surgical apparatus

Abstract

A surgical stapling device particularly suited for endoscopic procedures is described. The device includes a handle assembly and an elongated body extending distally from the handle assembly. The distal end of the elongated body is adapted to engage a disposable loading unit. A control rod having a proximal end operatively connected to the handle assembly includes a distal end extending through the elongated body. A control rod locking member is provided to prevent movement of the control rod until the disposable loading unit is fully secured to the elongated body of the stapling device.

Claims

1-34. -34. (canceled)

35. A surgical stapling apparatus comprising:

a handle assembly including a movable handle;

an elongated body extending distally from the handle assembly and defining a longitudinal axis;

a tool assembly mounted for articulation adjacent a distal end of the elongated body;

a longitudinally movable drive beam to effect the ejection of surgical staples from the tool assembly, the drive beam having a plurality of stacked sheets;

a knife blade on the drive beam; and

an actuation shaft mounted for longitudinal movement in response to manipulation of the movable handle, the actuation shaft being arranged to move the drive beam longitudinally.

36. A surgical stapling apparatus according to claim 35, further comprising an articulation mechanism mounted adjacent the handle assembly.

37. A surgical stapling apparatus according to claim 36, wherein the articulation mechanism has an articulation link extending through the elongated body.

38. A surgical stapling apparatus according to claim 35, wherein the tool assembly includes an anvil member with a cam surface positioned to be engaged by the drive beam to facilitate clamping of tissue.

39. A surgical stapling apparatus according to claim 35, wherein the anvil member has a longitudinal slot to facilitate passage of the drive beam.

40. A surgical stapling apparatus according to claim 39, wherein the tool assembly includes a staple cartridge having a longitudinal slot for facilitating passage of the drive beam.

41. A surgical stapling apparatus according to claim 35, further comprising a mounting assembly for mounting the tool assembly for articulation.

42. A surgical stapling apparatus according to claim 41, wherein the mounting assembly has a pivot member.

43. A surgical stapling apparatus according to claim 35, wherein the drive beam includes a proximal engagement section having engagement fingers.

44. A surgical stapling apparatus according to claim 35, wherein a distal end of the drive beam defines a support strut.

45. A surgical stapling apparatus according to claim 44, wherein the strut includes a flange that projects distally.

46. A surgical stapling apparatus according to claim 45, wherein the flange supports a cam roller.

47. A surgical stapling apparatus according to claim 35, wherein each sheet abuts at least one other adjacent sheet along the entire length of the stacked sheets.

48. A surgical stapling apparatus according to claim 35, wherein the movable handle must be moved more than once to eject all of the surgical staples from the tool assembly.