Manual actuation system for deployment of implant

• US 9,615,951 B2
• Filed: 11/14/2014
• Issued: 04/11/2017
• Est. Priority Date: 09/22/2009
• Status: Active Grant

• Current Assignee: Penumbra, Inc.
• Original Assignee: Penumbra, Inc.
• Inventors: Bennett, Eric, Vitus, Erin, Vargas, Matt, Bose, Arani, Pons, Stephen, Tompkins, Ben, Barry, David
• Primary Examiner(s): WEISBERG, AMY REGINA
• Application Number:
  US14/542,001
• Publication Number:
  US 20150073524A1
• Time in Patent Office: 879 Days
• Field of Search: 623 111- 112, 623 211, 606108, 606213, 606215, 606232, 606103, 606 74, 600585, 294132, 294135-136, 294104, 2541343 R, 81490
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2002/9511 the retaining means being filaments or wires
• CPC Class Codes: A61M 25/01 Introducing, guiding, advancing, emplacing or holding catheters A61M25/10 takes precedence
• CPC Class Codes: A61M 25/0136 Handles therefor
• CPC Class Codes: A61M 25/0147 with movable mechanical means, e.g. pull wires

Abstract

A system for mechanically deploying intraluminal implants is disclosed. The system is used with an implant that is delivered and/or deployed via a pull wire and includes a handle having a funnel and receiving channel for receiving the pull wire, a slider having a thumb grip and a wedge, and a shuttle having a grabber for grasping the pull wire. The thumb grip is pulled proximally to retract the wedge to cause the grabber to grasp the wire and retract the shuttle but not the wire. An extension spring linked between the slider and the shuttle abruptly pulls the shuttle to retract the pull wire after the slider is fully retracted.

Claims

1. A handle for retracting a pull wire, the handle comprising:

a shell having a distal end, a proximal end, a stop element, and a receptacle for receiving the proximal end of a pull wire;

a slider slidably disposed within the shell, said slider having a resting position, an intermediate position and a deployment position, the slider movable among said positions, the slider also having a trip; and

a shuttle slidably disposed within the shell and coupled to the slider by a first energy storage member, said shuttle having a resting position and a deployment position, the shuttle movable among said positions, the shuttle comprising a latch member that is releasably retained by the stop element, said latch member releaseable by the trip, the shuttle further comprising a wire gripper for engaging a pull wire;

wherein the shuttle remains in said resting position during proximal retraction of the slider, storing potential energy in the first energy storage member, until the trip engages the latch and releases the latch from the stop element thereby allowing the shuttle to be pulled proximally by the first energy storage member to the shuttle'"'"'s deployment position.

2. The handle according to claim 1 wherein when said slider is in said resting position or said intermediate position, said shuttle is in said resting position.

3. The handle according to claim 1 wherein said slider and said shuttle return to their respective resting positions following release of said slider from said deployment position.

4. The handle according to claim 1 wherein said shuttle latch member further comprises a button, whereby said button rests against said stop when said shuttle is in said resting position, and wherein said button is depressed by said slider when said slider is in said deployment position, whereby said button no longer rests against said stop.

5. The handle according to claim 1 further comprising a compression spring, where said first energy storage member biases said shuttle into said deployment position and said compression spring biases said slider and shuttle to their respective resting positions.

6. The handle according to claim 1 further comprising an internal lumen for receiving a pull wire.

7. The handle according to claim 1 wherein said wire gripper has a resting position and a gripping position.

8. The handle according to claim 1 wherein said slider prevents gripping of a pull wire by said wire gripper when said slider and said wire gripper are in their respective resting positions;

and wherein when said slider is in said intermediate position, said wire gripper converts to said gripping position to grip a pull wire.

9. The handle according to claim 1 wherein said wire gripper comprises gripper elements and said slider comprises a wedge, wherein said wedge nests between said gripper elements when said slider is in said resting position.

10. The handle according to claim 9 wherein said gripper elements further comprise a pivot point, and wherein said gripper elements are pivotable about said pivot points to grip a pull wire, to release a pull wire, or to return said wire gripper to its resting position.

11. The handle according to claim 1 further comprising a thumb grip movably mounted thereupon and in communication with said slider.

12. The handle according to claim 1 further comprising a substantially hollow interior and wherein said slider and said shuttle are housed within said substantially hollow interior.

13. A system for deploying an implant, the system comprising:

an implant;

an implant tool including a shaft having a lumen;

a pull wire having a proximal end and a distal end, the pull wire disposed within the lumen and movable from a first position to a second position for retaining the implant near the distal end of the pull wire, and then releasing the implant;

a handle including a shell having a proximal end, a distal end, a stop element and a receptacle for receiving the pull wire;

said handle also comprising a slider slidably disposed within the shell, a shuttle slidably disposed within the shell and coupled to the slider by a first energy storage member, and a trip, where said slider is movable among a resting position, an intermediate position and a deployment position, and said shuttle comprises a latch member releasably retained by said stop element, and a wire gripper, and said shuttle has a resting position and a deployed position, whereby when said slider is moved to its deployment position, said first energy storage member is stretched axially, thereby storing potential energy in said first energy storage member, until said shuttle is moved to its deployed position via said trip, which releases said latch member, the shuttle thereby retracting said pull wire and releasing said implant.

14. The system of claim 13 where said wire gripper converts from said resting position to said gripping position when said slider is in said intermediate position.

15. The system of claim 13 wherein said slider comprises a wedge and said wire gripper comprises gripper elements, and whereby said wedge prevents engagement of said gripper elements when said slider is in said resting position.

16. The system of claim 13 where said handle further comprises a compression spring for biasing said slider and said shuttle to return to their respective resting positions following release of said slider by a user.