Manual actuation system for deployment of implant
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.
1. A handle for retracting a pull wire, the handle comprising:
a slider movably mounted to said handle and having a resting position, a priming phase, and a deployment position, said slider further comprising a trip;
a shuttle movably mounted to said handle, the shuttle having a resting position and a retracted position, and further comprising a wire gripper for engaging a pull wire, and a latch comprising a latched position and an unlatched position; and
a spring linking said shuttle to said slider;
wherein said slider is movable by a user from said resting position, through said priming phase, and to said deployment position, and wherein when said slider is moved from said resting position through said priming phase, said wire gripper is configured to engage said pull wire, said spring is elongated to store energy therein; and when said slider is moved to said deployment position, said trip releases said latch from said latched position to said unlatched position, and said shuttle is thereby retracted by said spring to its deployed position, thereby retracting the pull wire.
2. The handle according to claim 1 wherein when said slider is in said resting position or in said priming phase, said shuttle is in said resting position.
3. The handle according to claim 1 further comprising a second spring, wherein during said priming phase, said second spring is configured to undergo compression to store energy therein, whereby said slider and said shuttle are biased to return to their respective resting positions following release of said slider from said deployment position.
4. The handle according to claim 1 further comprising a stop, wherein said latch member of said shuttle 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 trip 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 an internal lumen for receiving a pull wire.
6. The handle according to claim 1 wherein said wire gripper comprises a resting position and a gripping position.
7. The handle according to claim 6 wherein said slider is configured to prevent gripping of a pull wire by said wire gripper when said slider is in said resting position, and to permit gripping of a pull wire by said wire gripper when said slider is in said priming phase; whereby when said slider is moved by a user from said resting position to said priming phase, said wire gripper converts to said gripping position to grip a pull wire.
8. The handle according to claim 1 wherein said wire gripper comprises gripper elements and said slider comprises a wedge, wherein said wedge is configured to nest between said gripper elements when said slider is in said resting position.
9. The handle according to claim 8 wherein said gripper elements further comprise a pivot point, and wherein said gripper elements are configured to pivot about said pivot points to grip a pull wire, to release a pull wire, or to return said wire gripper to its resting position.
10. The handle according to claim 1 further comprising a thumb grip movably mounted thereupon and linked to said slider.
11. The handle according to claim 1 further comprising a substantially hollow interior, wherein said slider and said shuttle are housed within said substantially hollow interior.