Surgical clamping, cutting and stapling device

• US 6,843,403 B2
• Filed: 11/13/2001
• Issued: 01/18/2005
• Est. Priority Date: 06/02/1999
• Status: Expired due to Term

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Power Medical Interventions, Inc. (Medtronic Plc)
• Inventors: Whitman, Michael P.
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US10/010,955
• Publication Number:
  US 20020084304A1
• Time in Patent Office: 1,162 Days
• Field of Search: 227/19, 227/176.1, 227/175.1, 227/178.1, 227/180.1
• US Class Current: 227/176.1
• 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 device for cutting and fastening a section of tissue, comprising:

a first jaw;

a second jaw in opposed correspondence with the first jaw and adapted to retain one or more fasteners, the first and second jaws being movable in a non-rotational manner relative to one another between an open position and a closed position;

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

a first rotatable shaft for effecting the relative movement of the first and second jaws between the open position and the closed position; 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, comprising a wedge guide integral with the second jaw, the wedge translating along the wedge guide.

3. The device of claim 2,

wherein the wedge guide has a linear axis and a wall, and

wherein the wedge has an outer surface, and

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

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

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

4. The device of claim 3,

wherein the wedge guide includes a linear channel having a cross-section, and

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

5. The device of claim 4,

wherein the first jaw has a first surface, and

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

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

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

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

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

6. The device of claim 5,

wherein one or more of the fasteners are staples, and

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

7. The device of claim 6,

comprising a removable staple tray housing the staples, and

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

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

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

10. The device of claim 9,

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

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

11. The device of claim 8,

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

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

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

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

14. The device of claim 13,

wherein the sensor includes a first electrical contact on the first jaw and a second electrical contact on the 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, the proximity sensing circuit is closed.

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

a first jaw;

a second jaw in opposed correspondence with the first jaw and adapted to retain one or more fasteners, the first and second jaws movable in a non-rotational manner relative to one another between an open position and a closed position for retaining the tissue therebetween;

a blade for linearly cutting the section of 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; and

a second rotatable shaft for driving the blade and the staple driver.

16. The device according to claim 15, wherein the second rotatable shaft has outer threads for driving the blade and the staple driver.

17. The device according to claim 16, wherein the second rotatable shaft is adapted to drive the staple driver and the blade simultaneously.

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

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

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

21. The device according to claim 15, wherein the first jaw and the second jaw are maintained in a substantially parallel relationship between the open position and the closed position.

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

a first jaw;

a second jaw in opposed correspondence with the first jaw and adapted to retain one or more fasteners, the first and second jaws movable in a non-rotational manner relative to one another between an open position and a closed position for retaining the tissue therebetween;

a blade for linearly cutting the section of 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; and

a wedge disposed in an axially translating relation along the second jaw, the wedge including the blade and the staple driver, the wedge having a sloped surface, such that 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.

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

a first jaw;

a second jaw in opposed correspondence with the first jaw and adapted to retain one or more fasteners, the first and second jaws movable in a non-rotational manner relative to one another between an open position and a closed position for retaining the tissue therebetween;

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

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

wherein the second jaw includes a wedge guide and wherein the staple driver includes an axially translatable wedge adapted to translate along the wedge guide.

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

a first jaw;

a second jaw in opposed correspondence with the first jaw and adapted to retain one or more fasteners, the first and second jaws being movable in a non-rotational manner relative to one another between an open position and a closed position for retaining the tissue therebetween;

a first rotatable shaft having a longitudinal axis;

a blade driven by the first rotatable shaft, said blade adapted for cutting the tissue along a path parallel to a plane containing the longitudinal axis of the first shaft; and

a staple driver driven by the first rotatable shaft, said staple driver adapted for driving the fasteners through the tissue and toward the first jaw.

25. The device according to claim 24, wherein the second rotatable shaft has outer threads for effecting the relative movement of the first and second jaws between the open position and the closed position.

26. The device according to claim 24, wherein the first rotatable shaft is adapted to drive the staple driver and the blade simultaneously.

27. The device according to claim 24, wherein the first jaw and the second jaw are maintained in a substantially parallel relationship between the open position and the closed position.

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

a first jaw;

a second jaw in opposed correspondence with the first jaw and adapted to retain one or more fasteners, the first and second jaws being movable in a non-rotational manner relative to one another between an open position and a closed position for retaining the tissue therebetween;

a first rotatable shaft having a longitudinal axis;

a blade driven by the first rotatable shaft, said blade adapted for cutting the tissue along a path parallel to a plane containing the longitudinal axis of the first shaft;

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

a wedge disposed in an axially translating relation along the second jaw, the wedge including the blade and the staple driver, the wedge having a sloped surface, such that 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.

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

a first jaw;

a second jaw in opposed correspondence with the first jaw and adapted to retain one or more fasteners, the first and second jaws being movable in a non-rotational manner relative to one another between an open position and a closed position for retaining the tissue therebetween;

a first rotatable shaft having a longitudinal axis;

a blade driven by the first rotatable shaft, said blade adapted for cutting the tissue along a path parallel to a plane containing the longitudinal axis of the first shaft; and

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

wherein the second jaw includes a wedge guide and wherein the staple driver includes an axially translatable wedge adapted to translate along the wedge guide.