Methods and systems for delivering an implant

Patent metadata

Field	Value
Publication number	US-2016120679-A1
Application number	US-201514932805-A
Country	US
Kind code	A1
Filing date	Nov 4, 2015
Priority date	Nov 4, 2014
Publication date	May 5, 2016
Grant date	—

Abstract

A system for delivering an implant including a handle, a trigger, and an actuation assembly. The actuation assembly can be configured to displace the outer tubular member in the 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 move the inner shaft member proximally a distance (y) relative to the handle with no displacement of the outer tubular member upon return of the trigger from the second position to the first position.

First claim

1 . A system for delivering an implant, the implant to be disposed within a distal end portion of an outer tubular member and positioned to be engaged by a distal end portion of an inner shaft member when the inner shaft member is moved distally relative to the outer tubular member, the inner shaft member being disposed within the outer tubular member and movable distally and proximally relative to the outer tubular member, comprising:
a handle; a trigger operatively coupled to the handle; an actuation assembly operatively coupled to the trigger, the inner shaft member, and the outer tubular member; and a ratchet mechanism functionally coupled to the trigger; wherein the actuation assembly is configured to displace the outer tubular member in the 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 ratchet mechanism comprises a first state configured to allow the trigger to move toward the second position and prohibit motion toward the first position.

3 . The system of claim 1 , wherein the ratchet mechanism comprises a second state configured to allow the trigger to move toward the first position and prohibit motion toward the second position.

4 . The system of claim 1 , wherein the ratchet mechanism comprises a first pawl and a trigger ratchet rack configured to engage the pawl to permit unidirectional motion of a slide.

5 . The system of claim 4 , wherein the pawl comprises a first state wherein the pawl engages the trigger ratchet rack to permit unidirectional motion of the slide in a first direction.

6 . The system of claim 4 , wherein the pawl comprises a second state wherein the pawl engages the trigger ratchet rack to permit unidirectional motion of the slide in a second direction.

7 . The system of claim 6 , wherein the pawl is configured to switch from the first state to the second state as the trigger approaches the second position from the first position.

8 . The system of claim 7 , wherein the pawl is configured to switch from the second state to the first state as the trigger approaches the first position from the second position.

9 . The system of claim 6 , wherein the pawl is configured to be disengaged with the trigger ratchet rack by urging the pawl away from the trigger ratchet rack.

10 . The system of claim 9 , wherein the pawl is biased toward engagement with the trigger ratchet rack.

11 . The system of claim 5 , wherein the ratchet mechanism further comprises a second pawl having a first state wherein the second pawl engages the ratchet rack to permit uni-direction motion of the slide in a second direction.

12 . The system of claim 11 , wherein the first and second pawl each has a second state wherein the first and second pawl do not engage the trigger ratchet rack, and
wherein when the first pawl is in the first state the second pawl is in the second state and when the second pawl is in the first state the first pawl is in the second state.

13 . The system of claim 12 , wherein the ratchet mechanism further comprises a ratchet trip coupled to the first and second pawls.

14 . The system of claim 13 , wherein as the trigger approaches the second position from the first position the ratchet trip causes the first pawl to switch from the first state to the second state and the ratchet trip causes the second pawl to switch from the second state to the first state.

15 . The system of claim 13 , wherein as the trigger approaches the first position from the second position the ratchet trip causes the first pawl to switch from the second state to the first state and the ratchet trip causes the second pawl to switch from the first state to the second state.

16 . The system of claim 1 , further comprising an implant disposed within the distal end portion of an outer tubular member.

17 . The system of claim 16 , wherein the implant is a braided stent.

Assignees

• Abbott Cardiovascular Systems

Inventors

• Green Michael L
• Gillick Matthew J

Classifications

• F16H57/02

  Gearboxes; Mounting gearing therein · CPC title

• A61F2/9517

  handle assemblies therefor · CPC title

• F16H57/023

  Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly · CPC title

• F16H19/04

  comprising a rack · CPC title

• F16H2057/02039

  Gearboxes for particular applications · CPC title