Devices, systems, and methods for adjusting the position of an implantable element
A deployment device engageable with a movable component of a medical device to actuate the movable component with respect to another component of the medical device. The deployment device may be shifted among two or more configurations or stages to permit different movements of the movable component of the medical device. For instance, in one configuration the deployment device is fully engaged with the movable component such that a portion of the movable component is inhibited from engaging with an other portion of the medical device. In another configuration, the deployment device is partially withdrawn from engagement with the movable component to allow the movable component to engage with the other portion of the medical device.
1 . A deployment system for deploying an implantable device at a treatment site, the implantable device having a movable component shiftable between a position in which the movable component is movable with respect to another component of the implantable device and a locked position in which a locking component associated with the movable component locks the movable component with respect to the other component of the implantable device, said deployment system comprising:
a deployment device engageable with the movable component to move the movable component;
wherein the deployment device comprises:
a tubular flexible elongate member having a distal end configured to operably engage a portion of the movable component to impart movement thereto, and
a flexible elongate member extending through the flexible elongate member and having, on a distal end thereof, an actuator engagement component configured to engage a corresponding implantable device engagement component on the movable component;
wherein the deployment device is shiftable between:
a first stage in which the deployment device is fully engaged with the movable component and the locking component thereof,
a second stage in which the deployment device is operatively engaged with a portion of the movable component to move the movable component and exposes at least a portion of the locking component to allow the locking component to be moved into engagement with respect to the implantable device, and
a third stage in which the deployment device is disengaged from the movable component to be withdrawn from the treatment site; and
a spring assist between the distal end of the tubular flexible elongate member and the distal end of the flexible elongate member to assist in movement of the distal end of the tubular flexible elongate member and the distal end of the flexible elongate member apart from each other.
2 . The deployment system of claim 1 , wherein the tubular flexible elongate member is configured to operably engage the actuator engagement component to impart movement thereto.
3 . The deployment system of claim 1 , further comprising a control device operably coupled with the deployment device and shiftable between a first stage, a second stage, and a third stage corresponding to the first stage, second stage, and third stage of the deployment device.
4 . The deployment system of claim 3 , wherein the control device comprises an actuator control knob operably coupled with the tubular flexible elongate member, and a latch control knob operably coupled with the flexible elongate member.
5 . The deployment system of claim 4 , wherein the actuator control knob and the latch control knob are shiftable with respect to each other between first, second, and third configurations corresponding, respectively, to the first stage, the second stage, and the third stage of the control device.
6 . The deployment system of claim 5 , wherein:
in the first configuration, the actuator control knob and the latch control knob are a first distance apart;
in the second configuration, the actuator control knob and the latch control knob are a second distance apart, the second distance being smaller than the first distance; and
in the third configuration, the actuator control knob and the latch control knob are a third distance apart, the third distance being smaller than the second distance.
7 . The deployment system of claim 5 , wherein the actuator control knob and the latch control knob are shaped and configured to engage each other in one of three different positions each corresponding to one of the first, second, and third configurations.
8 . The deployment system of claim 5 , wherein the control device further comprises a movable clip positioned between the actuator control knob and the latch control knob and movable between one of three different positions to move the actuator control knob and the latch control knob to a respective corresponding one of the first, second, and third configurations.
9 . The deployment system of claim 8 , wherein the movable clip has a varying longitudinal extent between the actuator control knob and the latch control knob and is rotatable to vary the distance between the actuator control knob and the latch control knob.
10 . An implantable device and a deployment system therefor, comprising:
an implantable device having a movable component shiftable between a position in which the movable component is movable with respect to an other component of the implantable device and a locked position in which a locking component associated with the movable component locks the movable component with respect to the other component of the implantable device; and
a deployment system comprising a deployment device engageable with the movable component to move the movable component;
wherein the deployment device comprises:
a tubular flexible elongate member having a distal end configured to operably engage a portion of the movable component to impart movement thereto, and
a flexible elongate member extending through the flexible elongate member and having, on a distal end thereof, an actuator engagement component configured to engage a corresponding implantable device engagement component on the movable component;
wherein:
the deployment device is shiftable between:
a first stage in which the deployment device is fully engaged with the movable component and the locking component,
a second stage in which the deployment device is operatively engaged with a portion of the movable component to move the movable component and exposes at least a portion of the locking component to allow the locking component to be moved into engagement with respect to the implantable device, and
a third stage in which the deployment device is disengaged from the movable component to be withdrawn from engagement with the implantable device;
wherein:
the distal end of the tubular flexible elongate member is configured to engage the locking component and the implantable device engagement component when the deployment device is in the first stage;
in the second stage of the deployment device the distal end of the tubular flexible elongate member extends over the implantable device engagement component and the actuator engagement component in operable engagement with each other, and exposes at least a portion of the locking component to permit engagement of the locking component with the locking feature; and
in the third stage of said deployment device the tubular flexible elongate member is withdrawn from the implantable device engagement component and the actuator engagement component to allow disengagement of the implantable device engagement component and the actuator engagement component from each other; and
a spring assist between the distal end of the tubular flexible elongate member and the distal end of the flexible elongate member to assist in distal movement of the distal end of the flexible elongate member with respect to the distal end of the tubular flexible elongate member to rotate and engage the locking component with the locking feature.
11 . The implantable device and deployment system of claim 10 , wherein:
the movable component of the implantable device comprises an anchor having an anchor head at a proximal end thereof;
the locking component is formed on the anchor head; and
the implantable device engagement component is formed on the anchor head proximal to the locking component.
12 . The implantable device and deployment system of claim 11 , wherein:
the implantable device further comprises an anchor housing;
the other component of the implantable device is the anchor housing; and
a locking feature is formed in the anchor housing configured for locking engagement of the locking component on the anchor head therewith.