Stapling device for use with an electromechanical driver device for use with anastomosing, stapling, and resecting instruments

• US 6,315,184 B1
• Filed: 06/02/1999
• Issued: 11/13/2001
• Est. Priority Date: 06/02/1999
• Status: Expired due to Term

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: PowerMed, Inc.
• Inventors: Whitman, Michael P.
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US09/324,451
• Time in Patent Office: 895 Days
• Field of Search: 227/180.1, 227/176.1, 227/19, 606/75, 606/219
• US Class Current: 227/180.1
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 2017/00292 mounted on or guided by flexible, e.g. catheter-like, means
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/0725 with settable gap between anvil and cartridge, e.g. for different staple heights at different shots
• CPC Class Codes: A61B 2017/07271 characterised by its cartridge
• CPC Class Codes: A61B 2017/32113 with extendable or retractable guard or blade

Abstract

A stapling device for use as an attachment to an electromechanical device driver comprises an upper jaw and a lower jaw, the upper jaw having staple guides corresponding to one or more staples in a removable staple tray disposed within a lower jaw, whereby a wedge having a threaded bore travels upon a matching threaded shaft in a channel disposed in the lower jaw behind the staple tray, such that rotation of the threaded shaft causes movement of the wedge through the channel while a sloped surface of the wedge contacts the staples to push the staples against the staples guides, closing the staples.

Claims

1. A fastening and cutting device for cutting and fastening a section of tissue, comprising:

a first jaw;

a second jaw in opposed correspondence with the first jaw, the first and second jaws being relatively movable between an open position and a closed position;

one or more fasteners initially disposed in the second jaw;

a wedge, disposed in a selectively and axially translating relation within said second jaw, beneath said fasteners, said wedge including a blade and a sloped surface, such that during said selective axial translation of said wedge, the blade transects said section of tissue, and the slope surface drives said fasteners through the tissue and toward said first jaw, thereby fastening said section;

a first rotatable shaft for effecting the relative movement of the first and second jaws between the open position and the closed position along a direction perpendicular to a longitudinal axis of the first shaft; and

a second rotatable shaft for driving the wedge member, the second rotatable shaft being rotatable independently of the first rotatable shaft.

2. The device of claim 1, further comprising a wedge guide integral with said second jaw, said wedge translating within said wedge guide.

3. The device of claim 2,

wherein said wedge guide is linear and has a wall, and

wherein said wedge has an outer surface, and

wherein interaction between the outer surface and the wall prevents rotation of said wedge about the linear axis of said wedge guide, and

wherein said wedge has a threaded bore having a cylindrical axis coaxial with the linear axis of said wedge guide and having inner threads, and

wherein the second rotatable shaft comprises a threaded shaft having outer threads and extending along said wedge guide and having a cylindrical axis coaxial with the cylindrical axis of said bore, the inner threads of said bore matching the outer threads of said threaded shaft, wherein a rotation of said threaded shaft about the cylindrical axis of said bore causes the outer threads to ride within the inner threads, causing said wedge to travel along said shaft and along said wedge guide.

4. The device of claim 3,

wherein said wedge guide is a linear channel having a cross-section, and

wherein said wedge has a cross-section substantially matching the cross-section of said channel.

5. The device of claim 4,

wherein said first jaw has a first surface, and

wherein said second jaw has a second surface in opposed correspondence to the first surface of said first jaw, the second surface of said second jaw forming a plane, and

wherein each of said fasteners has a butt and at least one prong, and

wherein the butt protrudes into said channel, and wherein each prong extends to the second surface of said second jaw,

such that when the sloped surface of said wedge contacts each butt, each prong is pushed through the plane formed by the second surface of said second jaw, and

such that when each prong is so pushed through the plane formed by the second surface of said second jaw, and the first surface of said first jaw and the second surface of said second jaw are substantially adjacent, each prong contacts the first surface of said first jaw.

6. The device of claim 5,

wherein one or more of said fastening rods are staples, and

wherein the first surface of said first jaw includes one or more staple guides corresponding to the prongs of said staples, each staple guide forming a pair of concave adapted to receive the prongs of said staples and thereafter guide the prongs toward a bent closed position.

7. The device of claim 6,

further comprising a removable staple tray housing said staples, and

wherein the second surface of said second jaw is adapted to receive the removable staple tray.

8. The device of claim 3, wherein said shaft has a proximal end mechanically communicating with a means for rotating said threaded shaft.

9. The device of claim 8, wherein said means is a motor.

10. The device of claim 9,

wherein said motor has a drive extension having a distal end, and

wherein the proximal end of said threaded shaft has a drive socket adapted to receive the distal end of said drive extension.

11. The device of claim 8,

wherein one of a clockwise rotation and a counter-clockwise rotation of said threaded shaft causes said wedge to travel away from the proximal end of said threaded shaft, and

wherein the other of the clockwise rotation and the counter-clockwise rotation of said threaded shaft causes the wedge to travel toward the proximal end of said threaded shaft.

12. The device of claim 3, wherein the threaded bore of said wedge is a threaded channel.

13. The device of claim 1, further including a sensor for sensing when said first jaw is adjacent to said second jaw.

14. The device of claim 13,

wherein said sensor includes a first electrical contact on said first jaw and a second electrical contact on said second jaw, each of the first and second electrical contacts being in electrical communication with a proximity sensing circuit such that when the first and second electrical contacts are touching, said proximity sensing circuit is closed.

15. A fastening and cutting device for cutting and fastening a section of tissue, comprising:

a first jaw;

a second jaw in opposed correspondence with the first jaw, the first and second jaws being relatively moveable between an open position and a closed position;

one or more fasteners initially disposed in the second jaw;

a blade for cutting the tissue and a staple driver for driving the fasteners through the tissue and toward the first jaw;

a first rotatable shaft for effecting the relative movement of the first and second jaws between the open position and the closed position along a direction perpendicular to a longitudinal axis of the first shaft; and

a second rotatable shaft, different from the first rotatable shaft, for driving the blade and driving the staple driver.

16. The device according to claim 15, wherein the first rotatable shaft is rotated independently of the second rotatable shaft.

17. The device according to claim 16, comprising:

a wedge disposed in a selectively and axially translating relation within the second jaw beneath the fasteners, the wedge including the blade and the staple driver, the wedge having a sloped surface, wherein during selective axial translation of the wedge, the blade transects the section of tissue, and the sloped surface drives the fasteners through the tissue toward the first jaw.

18. The device according to claim 16, wherein the staple driver includes an axially translatable wedge, the device further comprising a wedge guide integral with the second jaw, the wedge translating within the wedge guide.

19. The device according to claim 16, further comprising a first motor driving the first rotatable shaft and a second motor driving the second rotatable shaft.

20. The device according to claim 16, further comprising a motor arrangement driving each of the first rotatable shaft and the second rotatable shaft.

21. The device according to claim 16, wherein the first jaw and the second jaw are maintained in a substantially parallel relationship between the open position and the closed position.

22. The device according to claim 16, wherein a proximal each of the first and second rotatable shafts includes a drive socket for engaging an end of a respective drive shaft.

23. A cutting and fastening device for cutting and fastening a section of tissue, comprising:

a first jaw;

a second jaw in opposed correspondence with the first jaw, the first and second jaws being relatively movable between an open position and a closed position;

one or more fasteners initially disposed in the second jaw;

a blade to cut the tissue and a staple driver to drive the fasteners through the tissue and toward the first jaw;

a first rotatable shaft for effecting the relative movement of the first and second jaws between the open position and the closed position along a direction perpendicular to a longitudinal axis of the first shaft; and

at least one motor driving the first shaft relative movement of the first and second jaws between the open position and the closed position independently of driving the blade and the staple driver.

24. The device according to claim 23, comprising:

a first rotatable shaft effecting the relative movement of the first and second jaws between the open position and the closed position; and

a second rotatable shaft, different from the first rotatable shaft, driving the blade and the staple driver,

wherein the first rotatable shaft and the second rotatable shaft rotate using the at least one motor.

25. The fastening and cutting device according to claim 23, wherein the at least one motor includes two motors, a first one of the two motors driving the relative movement of the fist and second jaws between the open position and the closed position, and a second one of the two motors driving the blade and the staple driver.

26. The device according to claim 23, wherein the staple driver includes an axially translatable wedge, the device further comprising a wedge guide integral with the second jaw, the wedge translating within the wedge guide.

27. The device according to claim 23, comprising:

a wedge disposed in a selectively and axially translating relation within the second jaw beneath the fasteners, the wedge including the blade and the staple driver, the wedge having a sloped surface, wherein during selective axial translation of the wedge, the blade transects the section of tissue, and the sloped surface drives the fasteners through the tissue toward the first jaw.

28. A method for cutting and fastening a section of tissue, comprising:

rotating a first rotatable shaft to effect relative movement of a first jaw and a second jaw from an open position to a closed position along a direction perpendicular to a longitudinal axis of the first shaft to secure the section of tissue between the first jaw and the second jaw; and

rotating a second rotatable shaft, different from the first rotatable shaft, to drive a blade to cut the tissue and to drive fasteners through the section of tissue.

29. The method according to claim 28, wherein the rotating the second rotatable shaft includes rotating the second rotatable shaft to drive a wedge along the second jaw, the wedge driving the fasteners through the section of tissue.

30. The method according to claim 28, comprising driving a blade to cut the tissue and driving fasteners through the section of tissue, wherein the blade and the fasteners are driven independently of the moving step.

31. The method according to claim 30, wherein the driving the fasteners step includes driving a wedge along the second jaw, the wedge driving the fasteners through the section of tissue.