Surgical cutting and stapling device

• US 10,335,143 B2
• Filed: 12/30/2015
• Issued: 07/02/2019
• Est. Priority Date: 06/02/1999
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Whitman, Michael P., Nicholas, David A.
• Primary Examiner(s): Lopez, Michelle
• Application Number:
  US14/983,882
• Publication Number:
  US 20160106419A1
• Time in Patent Office: 1,280 Days
• Field of Search: 2271751, 2271761
• 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 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• CPC Class Codes: A61B 2017/00017 Electrical control of surgical instruments
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments
• CPC Class Codes: A61B 34/71 Manipulators operated by drive cable mechanisms
• CPC Class Codes: A61B 34/74 Manipulators with manual electric input means

Abstract

The present invention, in accordance with various embodiments thereof, relates to a surgical device for at least one of cutting and stapling a section of tissue. The surgical device includes a housing including at least two drivers. The surgical device also includes an anvil mechanically attachable to the housing and moveable relative to the housing between an open position and a closed position. The first driver operates to move the anvil relative to the housing to an intermediate position between the open position and the closed position. The second driver operates to move at least a portion of the housing relative to the anvil between the intermediate position and the closed position.

Claims

1. A surgical attachment for cutting and stapling a section of tissue, comprising:

a housing including at least two drivers and a plurality of staples disposed in slots;

a flexible trocar shaft; and

an anvil assembly mechanically attachable to the flexible trocar shaft, the anvil assembly and flexible trocar shaft being moveable relative to the housing between an extended position and a retracted position with respect to the housing, the anvil assembly including an anvil end cap with a clamping face defining staple guides, and an anvil sleeve with a plurality of slots enabling a proximal end of the anvil sleeve to be radially compressed;

wherein a first one of the at least two drivers is configured to move the anvil assembly relative to the housing to an intermediate position between the extended position and the retracted position, and wherein a second one of the at least two drivers is configured to move at least a portion of the housing relative to the anvil assembly between the intermediate position and the retracted position.

2. The surgical attachment of claim 1, further comprising a handle attached to the flexible trocar shaft.

3. The surgical attachment of claim 1, wherein the anvil assembly and the housing define first and second clamping faces, respectively, and wherein the first and second clamping faces have a sloped arrangement with respect to a longitudinal axis defined by the flexible trocar shaft.

4. The surgical attachment of claim 1, further comprising a rotary pusher having a pusher cam, the staples being supported by a pusher member.

5. The surgical attachment of claim 4, further comprising a screw element having a threaded neck portion for rotating the rotary pusher, the neck portion having grooves, the rotary pusher having keys disposed in the grooves of the neck portion.

6. The surgical attachment of claim 5, wherein the rotary pusher is rotatable, and movable along the neck portion.

7. The surgical attachment of claim 6, wherein distal advancement of the rotary pusher advances a knife blade.

8. The surgical attachment of claim 7, further comprising a nut that advances with respect to the neck portion, the nut being disposed between the screw element and the rotary pusher.

9. The surgical attachment of claim 1, wherein the housing includes a staple cartridge that is configured to move axially between the retracted position and the extended position by the second driver.

10. The surgical attachment of claim 9, wherein the staple cartridge includes a clamping face disposed in opposed relationship to a clamping face of the anvil assembly.

11. The surgical attachment of claim 1, wherein the anvil assembly and the housing are configured such that the anvil assembly is axially lockable in the intermediate position relative to the housing.

12. The surgical attachment of claim 1, wherein the first and second drivers are attachable to respective rotatable drive shafts, the rotatable drive shafts selectively rotated by at least one motor.

13. The surgical attachment of claim 12, wherein each motor is operated by a controller to selectively rotate the rotatable drive shafts.

14. A surgical attachment for cutting and stapling a section of tissue, comprising:

a housing including at least two drivers and a plurality of staples disposed in slots;

a flexible trocar shaft, wherein the flexible trocar shaft includes a slot for connecting an anvil assembly thereto;

a handle attached to the flexible trocar shaft; and

an anvil assembly mechanically attachable to the flexible trocar shaft, the anvil assembly and flexible trocar shaft being moveable relative to the housing between an extended position and a retracted position with respect to the housing;

wherein a first one of the at least two drivers is configured to move the anvil assembly relative to the housing to an intermediate position between the extended position and the retracted position, and wherein a second one of the at least two drivers is configured to move at least a portion of the housing relative to the anvil assembly between the intermediate position and the retracted position.