Deployment handle for an introducer
A handle for an implant deployment device converts rotational movement into longitudinal movement in order to provide controlled release of one or more trigger wires. The handle also allows the trigger wire to be withdrawn into the device so that it does not need to be separately removed. A preferred handle includes a rotatable portion and a slidable portion. Releasable locks ensure that the handle is used to carry out implant deployment steps in a specific order.
1. A stent graft deployment device including:
a rotatable handle including a handle mechanism;
a retractable sheath disposed over a stent graft and coupled to the handle, the handle comprising:
a trigger wire engaged with a portion of the stent graft, and
a first trigger wire release mechanism attached to the trigger wire for withdrawing the trigger wire from engagement with the portion of the stent graft;
wherein rotation of the rotatable handle withdraws the sheath from over the stent graft; and
wherein rotation of the rotatable handle moves the first trigger wire release mechanism in a proximal direction and causes the trigger wire release mechanism to withdraw the trigger wire only in a proximal direction and from engagement with the stent graft so as to release the portion of the implant.
2. The stent graft deployment device of claim 1 , wherein the sheath is coupled to the handle mechanism by one or more wires.
3. The stent graft deployment device of claim 1 , wherein the sheath is coupled to the handle mechanism by one or more tabs.
4. The stent graft of claim 1 , wherein the handle mechanism engages the sheath and pulls the sheath.
5. The deployment device of claim 1 , wherein the first trigger wire release mechanism rotates with the rotatable member.
6. The deployment device of claim 5 , wherein rotation of the first trigger wire release mechanism results in withdrawal of the trigger wire attached thereto.
7. The deployment device of claim 5 , wherein rotation of the first trigger wire release mechanism results in the trigger wire being wound around the trigger wire release mechanism.
8. The deployment device of claim 7 , wherein the first trigger wire release mechanism includes a circumferential groove in which a portion of the withdrawn trigger wire is windingly received after the trigger wire is withdrawn from the implant.
9. The deployment device of claim 7 , including a support member distally of the first trigger wire release mechanism, the support member operable to guide a trigger wire around the trigger wire release mechanism.
10. A stent graft deployment device including:
a rotatable handle;
a sheath engaged with the rotatable handle;
a trigger wire attached to a stent graft;
a first trigger wire release mechanism movable to withdraw the trigger wire from the implant;
the trigger wire attached to the first trigger wire release mechanism,
wherein rotation of the rotatable handle moves the first trigger wire release mechanism only in the proximal direction to withdraw the trigger wire in a proximal direction from the stent graft; and
wherein rotation of the rotatable handle withdraws the sheath.
11. The stent graft deployment device of claim 10 , wherein the sheath is coupled to the handle by one or more wires.
12. The stent graft deployment device of claim 10 , wherein the sheath is coupled to the handle by one or more tabs.
13. The stent graft of claim 10 , wherein the handle engages the sheath and pulls the sheath.
14. A stent graft deployment device including:
a rotatable handle;
a sheath engaged with the rotatable handle;
a trigger wire attached to the stent graft;
a first trigger wire release mechanism movable to withdraw the trigger wire from the implant;
the trigger wire attached to the first trigger wire release mechanism;
a second trigger wire attached to a second trigger wire mechanism;
wherein rotation of the rotatable handle moves the first trigger wire release mechanism only in the proximal direction to withdraw the trigger wire in a proximal direction from the stent graft;
wherein rotation of the rotatable handle moves the second trigger wire release mechanism only in the proximal direction to withdraw the second trigger wire in a proximal direction from the stent graft; and
wherein rotation of the rotatable handle withdraws the sheath.