Methods and systems for delivering an implant

Patent metadata

Field	Value
Publication number	US-10639181-B2
Application number	US-201715835418-A
Country	US
Kind code	B2
Filing date	Dec 7, 2017
Priority date	Nov 4, 2014
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

A system for delivering an implant including a handle, a trigger, an actuation assembly, and a catheter assembly. The actuation assembly is configured to displace the outer tubular member in the proximal direction and to separately move the inner shaft member distally upon deployment of the trigger from the first position to the second position, and move the inner shaft member proximally with no displacement of the outer tubular member upon return of the trigger from the second position to the first position. The catheter assembly includes an outer tubular member, an inner shaft member, and a pusher assembly.

First claim

The invention claimed is:

1. A system for delivering an implant, comprising: a catheter assembly, the catheter assembly having an outer tubular member defining an outer tubular member lumen, an inner shaft member disposed at least partially within the outer tubular member lumen, and a pusher assembly coupled to a distal end portion of a distal inner shaft portion; a handle; a trigger operatively coupled to the handle; and an actuation assembly operatively coupled to the trigger and the catheter assembly, the actuation assembly comprising a planet carrier, at least one planet gear operatively coupled to the planet carrier, a sun gear shaft operatively engaged with the at least one planet gear, a ring gear operatively engaged with the at least one planet gear, a first clutch driver configured to limit the sun gear shaft to uni-directional rotational motion, and a second clutch driver configured to uni-directionally lock the sun gear shaft and the planet carrier; wherein the actuation assembly further comprises a shuttle frame having the planet carrier, the at least one planet gear, the sun gear shaft, the ring gear, the first clutch driver and the second clutch driver disposed thereon, and wherein the actuation assembly is configured to displace the outer tubular member in a proximal direction a distance (d) relative to the handle and to separately move the inner shaft member distally a distance (x) relative to the handle upon deployment of the trigger from a first position to a second position, and further wherein the actuation assembly is configured to move the inner shaft member proximally a distance (y) relative to the handle with no displacement of the outer tubular member relative to the handle upon return of the trigger from the second position to the first position.

2. The system of claim 1 , wherein the second clutch driver is configured to uni-directionally lock the sun gear shaft and the planet carrier such that the sun gear shaft, planet carrier and the ring gear have a 1:1 ratio of rotation during deployment of the trigger from the first position to the second position.

3. The system of claim 1 , wherein the actuation assembly further comprises a clutch release operatively coupled to the second clutch driver and configured to prevent the second clutch driver from uni-directionally locking the sun gear shaft and the planet carrier when the clutch release is engaged by a stop.

4. The system of claim 3 , wherein the stop is disposed on the handle, and the stop engages the clutch release when the actuation assembly has moved proximally a distance (z) along the handle.

5. The system of claim 3 , wherein the clutch release comprises a saw-tooth portion and wherein the stop comprises a resilient abutment portion, and wherein the resilient abutment portion of the stop engages the saw-tooth portion of the clutch release when the actuation assembly has moved proximally a distance (z) along the handle.

6. The system of claim 1 , wherein the first clutch driver is configured to limit the sun gear shaft to uni-directional motion such that the sun gear shaft does not rotate during return of the trigger from the second position to the first position and the at least one planetary gear rotates about the sun gear shaft.

7. The system of claim 1 , wherein the sun gear shaft is functionally coupled to the outer tubular member such that upon deployment of the trigger from the first position to the second position the sun gear shaft rotates and thereby causes the outer tubular member to move proximally.

8. The system of claim 1 , wherein the shuttle frame is fixedly coupled to the outer tubular member.

9. The system of claim 1 , wherein the sun gear shaft is functionally coupled to the handle such that upon deployment of the trigger from the first position to the second position the sun gear shaft rotates and the shuttle frame moves proximally a distance relative to the handle.

10. The system of claim 1 , wherein the actuation assembly further comprises an intermediate gear functionally disposed on the shuttle frame between the sun gear shaft and the handle, and operatively engaged with the sun gear shaft.

11. The system of claim 1 , wherein the actuation assembly further comprises a ratchet rack fixedly coupled to the inner shaft member and disposed on the shuttle frame.

12. The system of claim 11 , wherein the ratchet rack is operatively meshed with the ring gear.

13. The system of claim 1 , wherein the actuation assembly further comprises at least one boss configured to engage at least one boss track disposed within the handle to thereby guide the shuttle frame along the handle.

14. The system of claim 13 , wherein the at least one boss comprises a first boss disposed through an axis of an intermediate gear functionally disposed on the shuttle frame between the sun gear shaft and the handle, and operatively engaged with the sun gear shaft.

15. The system of claim 14 , wherein the at least one boss further comprises a second and third boss, each of the second and third boss disposed through the shuttle frame.

16. The system of claim 15 , wherein the at least one boss further comprises a fourth boss disposed through an axis of the sun gear shaft.

17. The system of claim 1 , wherein the actuation assembly further comprises a plate disposed on the shuttle frame.

18. The system of claim 1 , wherein the sun gear shaft comprises a sun gear portion, a sheath pinion, and a clutch engagement portion.

19. The system of claim 1 , wherein the planet carrier comprises a circumferential pinion, a clutch component, and at least one pin.

20. The system of claim 1 , wherein the ring gear comprises a circumferential pinion and a ring gear portion.

21. The system of claim 1 , wherein the first clutch driver and the second clutch driver each comprises a sun gear shaft engagement portion and a clutch portion.

22. The system of claim 1 , further comprising: a gear train functionally disposed between the trigger and the actuation assembly, the gear train having a trigger gear sector, a trigger pinion operatively meshed with the trigger gear sector, a slide pinion operatively coupled to the trigger pinion, and a slide rack disposed on a slide and operatively meshed with the trigger pinion.

23. The system of claim 22 , where the slide is coupled to a driving rack.

24. The system of claim 23 , wherein the driving rack is operatively engaged with the planet carrier and the driving rack is supported by the shuttle frame.

25. The system of claim 23 , wherein the driving rack is fixedly coupled to the slide.

26. The system of claim 23 , wherein the driving rack is detachably coupled to the slide.

27. The system of claim 1 , the outer tubular member comprising an inner layer, a reinforcement layer, a middle layer, and an outer layer.

28. The system of claim 27 , wherein the inner layer of the outer tubular member comprises fluorinated ethylene propylene.

29. The system of claim 27 , wherein the reinforcement layer of the outer tubular member comprises a stainless steel braid.

30. The system of claim 27 , wherein the reinforcement layer of the outer tubular member comprises Teflon fibers.

31. The system of claim 27 , wherein the middle layer of the outer tubular member comprise polyimide.

32. The system of claim 27 , wherein the outer

Assignees

• Abbott Cardiovascular Systems Inc

Inventors

• Shumer Daniel H
• Earles Ronald G
• Bei Nianjiong J
• Stamberg Barbara
• Simon Daniel
• Nava Maria Del Rosario
• Green Michael L
• Gillick Matthew J

Classifications

• A61F2210/0076

  multilayered, e.g. laminated structures · CPC title

• F16H19/025

  comprising a friction shaft · CPC title

• A61F2250/0098

  radio-opaque, e.g. radio-opaque markers · CPC title

• F16H31/007

  Step-by-step mechanisms for linear motion · CPC title

• F16H19/04

  comprising a rack · CPC title