FLEXIBLE ENDOSCOPIC STITCHING DEVICES

• US 20100274265A1
• Filed: 10/05/2007
• Published: 10/28/2010
• Est. Priority Date: 10/05/2006
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Wingardner, Thomas, Fowler, David N., Taylor, Eric J.
• Granted Patent: US 8,372,090 B2
• Time in Patent Office: Days
• US Class Current: 606/144
• CPC Class Codes: A61B 17/04 for suturing wounds; Holders or packages for needles or suture materials suture materials A61L17/00
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/0491 Sewing machines for surgery
• CPC Class Codes: A61B 17/0625 the needle being specially adapted to interact with the manipulator, e.g. being ridged to snap fit in a hole of the manipulator A61B17/06109 takes precedence
• CPC Class Codes: A61B 2017/00323 Cables or rods
• CPC Class Codes: A61B 2017/06042 located close to needle tip
• CPC Class Codes: A61B 2017/0609 having sharp tips at both ends, e.g. shuttle needle alternately retained and released by first and second facing jaws of a suturing instrument
• CPC Class Codes: A61B 2017/2902 characterized by features of the actuating rod
• CPC Class Codes: A61B 2017/2903 transferring rotary motion
• CPC Class Codes: A61B 2017/2905 flexible
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2017/2933 camming or guiding means
• CPC Class Codes: A61B 2017/2936 Pins in guiding slots
• CPC Class Codes: A61B 2017/2943 Toothed members, e.g. rack and pinion

Abstract

An endoscopic stitching device includes a tool assembly having a pair of juxtaposed jaws pivotally associated with one another, each jaw defining a needle receiving recess formed in a tissue contacting surface thereof; a drive assembly including a pair of concentric, individually rotatably and translatably supported barrels, each barrel defining a central lumen therethrough; and a pair of axially translatable needle engaging blades slidably supported, one each, in a respective jaw. The stitching device further includes a center rod slidably and rotatably disposed through the lumen of the barrels, a distal end of the center rod being operatively engaged with the pair of jaws.

Claims

1. An endoscopic stitching device, comprising:

an articulatable neck assembly configured and adapted for articulation in at least one direction transverse to a longitudinal axis thereof;

a tool assembly operatively supported on a distal end of the neck assembly, the tool assembly including;

a pair of juxtaposed jaws pivotally associated with one another, each jaw defining a needle receiving recess formed in a tissue contacting surface thereof;

a drive assembly including a pair of concentric, individually rotatably and translatably supported barrels, each barrel defining a central lumen therethrough; and

a pair of axially translatable needle engaging blades slidably supported, one each, in a respective jaw, each blade having an advanced position wherein a distal end of the blade engages a suture needle when the suture needle is in the respective jaw to thereby secure the suture needle to the jaw, and a retracted position wherein the distal end of the blade is out of engagement with the suture needle to thereby permit the suture needle to be removed from the jaw, wherein a proximal end of each blade is rotatably connected to a respective barrel;

a center rod slidably and rotatably disposed through the lumen of the barrels, a distal end of the center rod being operatively engaged with the pair of jaws; and

a suture needle operatively associated with the tool assembly.

2. The endoscopic stitching device according to claim 1, wherein an outer barrel of the pair of concentric barrels defines an annular groove formed in a surface of the lumen thereof, and an inner barrel of the pair of concentric barrels defines an annular groove formed in an outer surface thereof.

3. The endoscopic stitching device according to claim 2, wherein each blade includes a ring supported at a proximal end thereof, wherein the ring of each blade is rotatably disposed in a respective one of the grooves formed in the outer and inner barrels.

4. The endoscopic stitching device according to claim 3, further comprising a pair of pusher rods operatively connected, one each, to a respective inner and outer barrel, wherein axial translation of the pusher rods results in corresponding axial translation of a respective inner and outer barrel and a respective one of the pair of blades.

5. The endoscopic stitching device according to claim 4, wherein the pusher rods are flexible.

6. The endoscopic stitching device according to claim 4, wherein the tool assembly includes a support member defining a lumen therein, wherein the barrels of the drive assembly are supported in the lumen of the support member in such a manner so as to permit rotation and axial translation thereof.

10. The endoscopic stitching device according to claim 1, wherein the suture needle includes a barbed suture.

11. The endoscopic stitching device according to claim 1, further comprising a camming hub rotatably supported proximally of the pair of barrels, wherein the camming hub defines a central lumen through which the center rod passes and a helical groove formed in an outer surface thereof.

12. The endoscopic stitching device according to claim 11, wherein each of the pair of barrels includes an arm extending proximally therefrom, wherein each arm is operatively engaged in the helical groove of the camming hub.

13. The endoscopic stitching device according to claim 12, wherein the arms extending from the pair of barrels are diametrically opposed to one another, wherein rotation of the camming hub results in reciprocal axial translation of the pair of barrels relative to one another.

14. The endoscopic stitching device according to claim 13, further comprising an actuation cable translatably and rotatably extending through the lumen defined by the barrels of the drive assembly, wherein a distal end of the actuation cable is operatively connected to the center rod such that rotation of the actuation cable results in rotation of the pair of jaws.

15. The endoscopic stitching device according to claim 14, wherein the actuation cable is translatable to axially translate the center rod between a first position wherein the jaws are spaced apart from one another and a second position wherein the pair of jaws are in a close spaced relation to one another.

16. The endoscopic stitching device according to claim 15, further comprising a hollow shaft extending proximally from the camming hub, wherein the actuation cable extends through a lumen of the hollow shaft.

17. The endoscopic stitching device according to claim 1, wherein the drive assembly includes a pair of axially spaced apart barrels, and wherein each barrel is axially translatable.

18. The endoscopic stitching device according to claim 17, wherein a distal barrel of the pair of barrels defines an annular groove formed in an outer surface thereof, and a proximal barrel of the pair of barrels defines an annular groove formed in an outer surface thereof.

19. The endoscopic stitching device according to claim 18, wherein each blade includes a ring supported at a proximal end thereof, wherein the ring of each blade is rotatably disposed in a respective one of the grooves formed in the distal and proximal barrels.

20. The endoscopic stitching device according to claim 19, further comprising a pair of pusher rods operatively connected, one each, to a respective distal and proximal barrel, wherein axial translation of the pusher rods results in corresponding axial translation of a respective distal and proximal barrel and a respective one of the pair of blades.

8. The endoscopic stitching device according to claim 7, further comprising an actuation cable translatably and rotatably extending through the lumen defined by the barrels of the drive assembly, wherein a distal end of the actuation cable is operatively connected to the center rod such that rotation of the actuation cable results in rotation of the pair of jaws.

9. The endoscopic stitching device according to claim 8, wherein the actuation cable is translatable to axially translate the center rod between a first position wherein the jaws are spaced apart from one another and a second position wherein the pair of jaws are in a close spaced relation to one another.

21. An endoscopic stitching device, comprising:

a tool assembly including;

a pair of juxtaposed jaws pivotally associated with one another, each jaw defining a needle receiving recess formed in a tissue contacting surface thereof;

a drive assembly including a pair of concentric, individually rotatably and translatably supported barrels, each barrel defining a central lumen therethrough; and

a pair of axially translatable needle engaging blades slidably supported, one each, in a respective jaw, each blade having an advanced position wherein a distal end of the blade engages a suture needle when the suture needle is in the respective jaw to thereby secure the suture needle to the jaw, and a retracted position wherein the distal end of the blade is out of engagement with the suture needle to thereby permit the suture needle to be removed from the jaw, wherein a proximal end of each blade is rotatably connected to a respective barrel; and

a center rod slidably and rotatably disposed through the lumen of the barrels, a distal end of the center rod being operatively engaged with the pair of jaws.

22. The endoscopic stitching device according to claim 21, further comprising an articulatable neck assembly to operatively support the tool assembly at a distal end thereof, the neck assembly being configured and adapted for articulation in at least one direction transverse to a longitudinal axis thereof.

23. The endoscopic stitching device according to claim 21, wherein an outer barrel of the pair of concentric barrels defines an annular groove formed in a surface of the lumen thereof, and an inner barrel of the pair of concentric barrels defines an annular groove formed in an outer surface thereof.

24. The endoscopic stitching device according to claim 23, wherein each blade includes a ring supported at a proximal end thereof, wherein the ring of each blade is rotatably disposed in a respective one of the grooves formed in the outer and inner barrels.

25. The endoscopic stitching device according to claim 24, further comprising a pair of pusher rods operatively connected, one each, to a respective inner and outer barrel, wherein axial translation of the pusher rods results in corresponding axial translation of a respective inner and outer barrel and a respective one of the pair of blades.

26. The endoscopic stitching device according to claim 25, wherein the pusher rods are flexible.

27. The endoscopic stitching device according to claim 25, wherein the tool assembly includes a support member defining a lumen therein, wherein the barrels of the drive assembly are supported in the lumen of the support member in such a manner so as to permit rotation and axial translation thereof.

28. The endoscopic stitching device according to claim 27, further comprising an actuation cable translatably and rotatably extending through the lumen defined by the barrels of the drive assembly, wherein a distal end of the actuation cable is operatively connected to the center rod such that rotation of the actuation cable results in rotation of the pair of jaws.

29. The endoscopic stitching device according to claim 28, wherein the actuation cable is translatable to axially translate the center rod between a first position wherein the jaws are spaced apart from one another and a second position wherein the pair of jaws are in a close spaced relation to one another.

30. The endoscopic stitching device according to claim 21, further comprising a camming hub rotatably supported proximally of the pair of barrels, wherein the camming hub defines a central lumen through which the center rod passes and a helical groove formed in an outer surface thereof.

31. The endoscopic stitching device according to claim 30, wherein each of the pair of barrels includes an arm extending proximally therefrom, wherein each arm is operatively engaged in the helical groove of the camming hub.

32. The endoscopic stitching device according to claim 31, wherein the arms extending from the pair of barrels are diametrically opposed to one another, wherein rotation of the camming hub results in reciprocal axial translation of the pair of barrels relative to one another.

33. The endoscopic stitching device according to claim 32, further comprising an actuation cable translatably and rotatably extending through the lumen defined by the barrels of the drive assembly, wherein a distal end of the actuation cable is operatively connected to the center rod such that rotation of the actuation cable results in rotation of the pair of jaws.

34. The endoscopic stitching device according to claim 33, wherein the actuation cable is translatable to axially translate the center rod between a first position wherein the jaws are spaced apart from one another and a second position wherein the pair of jaws are in a close spaced relation to one another.

35. The endoscopic stitching device according to claim 34, further comprising a hollow shaft extending proximally from the camming hub, wherein the actuation cable extends through a lumen of the hollow shaft.

36. The endoscopic stitching device according to claim 21, wherein the drive assembly includes a pair of axially spaced apart barrels, and wherein each barrel is axially translatable.

37. The endoscopic stitching device according to claim 36, wherein a distal barrel of the pair of barrels defines an annular groove formed in an outer surface thereof, and a proximal barrel of the pair of barrels defines an annular groove formed in an outer surface thereof.

38. The endoscopic stitching device according to claim 37, wherein each blade includes a ring supported at a proximal end thereof, wherein the ring of each blade is rotatably disposed in a respective one of the grooves formed in the distal and proximal barrels.

39. The endoscopic stitching device according to claim 38, further comprising a pair of pusher rods operatively connected, one each, to a respective distal and proximal barrel, wherein axial translation of the pusher rods results in corresponding axial translation of a respective distal and proximal barrel and a respective one of the pair of blades.

40. The endoscopic stitching device according to claim 21, further comprising a suture needle operatively associated with the pair of jaws.

41. The endoscopic stitching device according to claim 40, wherein the suture needle includes a barbed suture.