DEPLOYMENT HANDLE FOR A PROSTHESIS DELIVERY DEVICE

• US 20160135972A1
• Filed: 11/03/2015
• Published: 05/19/2016
• Est. Priority Date: 11/04/2014
• Status: Active Grant

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Inventors: Wright, Anthony, Vad, Siddharth, Macatangay, Edwin, Neoh, Wen Hong, Skelton, Eugene
• Granted Patent: US 10,292,850 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/9661 the proximal portion of the stent or stent-graft is released first
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9665 with additional retaining means

Abstract

The present invention relates to a deployment handle for a prosthesis delivery device and to a delivery device including such a handle. The handle assembly facilitates the controlled release of a prosthesis from the delivery device, while ensuring that various deployment steps are performed in a particular sequential order. The handle assembly comprises a main handle and a second handle which is rotatably and/or longitudinally moveable relative to the main handle. The second handle has an initial position on the main handle such that it prevents access to, and premature manipulation of, a proximal stent release mechanism, until the stent graft has been at least partially unsheathed.

Claims

1. A handle assembly for a prosthesis delivery device having a proximal end and distal end, the handle assembly comprising:

a main handle having a proximal end and a distal end;

a prosthesis release actuation mechanism disposed at least partially on the main handle and moveable relative to the main handle;

a motion translating mechanism disposed distal to and operatively connected to the prosthesis release actuation mechanism;

a prosthesis retention mechanism disposed at the proximal end of the delivery device and operatively connected to the motion translating mechanism, the prosthesis retention mechanism having a prosthesis capture condition and a prosthesis release condition;

wherein movement of the prosthesis release actuation mechanism causes movement of the motion translating mechanism thereby moving the prosthesis retention mechanism from the prosthesis capture condition to the prosthesis release condition.

2. The handle assembly for a prosthesis delivery device of claim 1 further comprising a second handle disposed at least partially on the main handle and at least one of circumferentially and longitudinally moveable relative to the main handle, the second handle having a first position on the main handle in which movement of the prosthesis release actuation mechanism is prevented and a second position on the main handle in which movement of the prosthesis release actuation mechanism is permitted.

3. The handle assembly for a prosthesis delivery device of claim 1, wherein the prosthesis release actuation mechanism is circumferentially disposed about the main handle and rotationally moveable relative to the main handle.

4. The handle assembly for a prosthesis delivery device of claim 1, wherein the motion translating mechanism comprises a rotatable drum.

5. The handle assembly for a prosthesis delivery device of claim 1, wherein an elongated filamentous material extends between the prosthesis release actuation mechanism and the motion translating mechanism.

6. The handle assembly for a prosthesis delivery device of claim 5 wherein a portion of the elongated filamentous material is wound about the motion translating mechanism.

7. The handle assembly for a prosthesis delivery device of claim 5 wherein the elongated filamentous material comprises at least one of a suture, string, wire, cord and thread.

8. The handle assembly for a prosthesis delivery device as in claim 3 wherein the prosthesis release actuation mechanism is threadedly engaged with an elongated rack mechanism, and wherein rotation of the prosthesis release actuation mechanism moves the rack mechanism longitudinally relative to the main handle.

9. A handle assembly for a prosthesis delivery device of claim 8 wherein an elongated filamentous material extends between a distal end of the rack mechanism and the motion translating mechanism and wherein the filamentous material operatively connects the prosthesis release actuation mechanism to the motion translating mechanism.

10. The handle assembly for a prosthesis delivery device of claim 3, wherein rotation of the prosthesis release actuation mechanism in a first direction effects rotation of the motion translating mechanism in a second direction and wherein rotation of the motion translating mechanism effects rotation of the prosthesis retention mechanism in a third direction.

11. The handle assembly for a prosthesis delivery device of claim 1, further comprising a cannula extending from the motion translating mechanism to the prosthesis retention mechanism.

12. The handle assembly for a prosthesis delivery device of claim 10 wherein at least one of the first, second and third rotation directions is a different direction.

13. The handle assembly for a prosthesis delivery device of claim 10 wherein at least one of the first, second and third rotation directions is the same direction.

14. The handle assembly for a prosthesis delivery device of claim 2, further comprising a sheath operatively connected to the second handle, the sheath extending proximally of the main handle, wherein the at least one of circumferential and longitudinal movement of the second handle retracts the sheath in a distal direction.

15. The handle assembly for a prosthesis delivery device of claim 1, wherein the second handle is threadedly engaged with the main handle.

16. A prosthesis delivery device having a proximal end and distal end, the prosthesis delivery device comprising:

a handle assembly at the distal end of the delivery device, the handle assembly comprising;

a main handle having a proximal end and a distal end;

a prosthesis release actuation mechanism disposed at least partially on the main handle and moveable relative to the main handle;

a motion translating mechanism disposed distal to and operatively connected to the prosthesis release actuation mechanism;

a prosthesis retention mechanism disposed at the proximal end of the delivery device and operatively connected to the motion translating mechanism, the prosthesis retention mechanism having a prosthesis capture condition and a prosthesis release condition;

wherein movement of the prosthesis release actuation mechanism causes movement of the motion translating mechanism thereby moving the prosthesis retention mechanism from the prosthesis capture condition to the prosthesis release condition.

17. The prosthesis delivery device of claim 16 further comprising a second handle disposed at least partially on the main handle and at least one of circumferentially and longitudinally moveable relative to the main handle.

18. The prosthesis delivery device of claim 16, wherein the prosthesis release actuation mechanism is circumferentially disposed about the main handle and rotationally moveable relative to the main handle.

19. The prosthesis delivery device of claim 16, wherein the motion translating mechanism comprises a rotatable drum.

20. The prosthesis delivery device of claim 18 wherein the prosthesis release actuation mechanism is threadedly engaged with an elongated rack mechanism, and wherein rotation of the prosthesis release actuation mechanism moves the rack longitudinally relative to the main handle.

21. The prosthesis delivery device of claim 20 wherein an elongated filamentous material extends between a distal end of the rack mechanism and the motion translating mechanism and wherein the filamentous material operatively connects the prosthesis release actuation mechanism to the motion translating mechanism.

22. The prosthesis delivery device of claim 18, wherein rotation of the prosthesis release actuation mechanism imparts rotation to the motion translating mechanism.

23. The prosthesis delivery device of claim 16, further including a cannula connected to and extending from the motion translating mechanism to the prosthesis retention mechanism.

24. The prosthesis delivery device of claim 18 wherein rotation of the prosthesis release actuation mechanism effects rotation of the motion translating mechanism and wherein rotation of the motion translating mechanism effects rotation of the prosthesis retention mechanism.

25. The prosthesis delivery device of claim 18 wherein rotation of the prosthesis release actuation mechanism in a first direction effects rotation of the motion translating mechanism in a second direction and wherein rotation of the motion translating mechanism in a second direction effects rotation of the prosthesis retention mechanism in the second direction.

26. The prosthesis delivery device of claim 17, further comprising a sheath operatively connected to the second handle and extending proximally of the main handle, wherein the at least one of circumferential and longitudinal movement of the second handle retracts the sheath in a distal direction.

27. The prosthesis delivery device of claim 17, wherein the second handle is threadedly engaged with the main handle.

28. A method for sequentially releasing a prosthesis from a delivery device, the delivery device comprising a rotatable inner cannula extending from a proximal end to a distal end;

a prosthesis releasably coupled to the proximal end of the inner cannula;

a sheath coaxially disposed about at least a portion of the prosthesis;

a delivery handle assembly at a distal end of the delivery device, the delivery handle assembly comprising;

a main handle, a second handle disposed at least partially on the main handle and at least one of circumferentially and longitudinally moveable relative to the main handle, a prosthesis release actuation mechanism disposed at least partially on the main handle, the method comprising;

manipulating the second handle from a first position on the main handle to a second position on the main handle to retract the sheath thereby exposing at least a proximal end of the prosthesis and to permit actuation of the prosthesis release actuation mechanism;

actuating the prosthesis release actuation mechanism to deploy at least the proximal end of the prosthesis;

manipulating the second handle from the second position to a third position on the main handle to further retract the sheath to expose a distal end of the prosthesis.

29. The method of claim 28 wherein actuation of the prosthesis release actuation mechanism is prevented when the second handle is in the first position on the main handle.

30. The method of claim 28 wherein manipulation of the second handle from the second position to the third position withdraws at least one trigger wire releasably attached to a distal end of the prosthesis, thereby facilitating deployment of the distal end of the prosthesis.