System and methods for medical device advancement and rotation
View Patent ↗A system for moving an elongate medical device has at least one drive element for engaging and moving an elongate medical device. Various embodiments provide for moving the separate inner and outer elements of a telescoping medical device. Some systems also provide for the rotation of a rotatable distal element on a rotatable medical device or the rotation of extension element in a telescoping medical device.
1. An advancer for moving at least one elongate medical device, the advancer comprising:
a base having a slot with an open tope and opposed sides therein;
a pair of opposed wheels having positions on opposite sides of the slots;
a drive mechanism adapted to be connected to a motor, for turning at least one of the pair of opposed wheels to provide at least one drive wheel; and
a cover movably mounted on the base for movement relative to the slot and the pair of opposed wheels, such that the position of the pair of opposed wheels remains fixed while the cover moves away from the slot and pair of opposed wheels, the cover being movable between a loading position in which the top of the slot is open to allow a portion of the at least one elongate device to be inserted into the slot between the wheels, and a drive position in which the cover at least partially blocks the top of the slot to retain the at least one elongate device therein.
2. The advancer of claim 1 wherein at least one of the drive wheels comprises a plurality of serrations.
3. The advancer of claim 1 wherein at least one of the drive wheels comprises a coating on the wheel.
4. The advancer of claim 1 wherein at least one of the drive wheels comprises tubing extending around the wheel.
5. The advancer of claim 1 wherein at least one of the drive wheels comprises at least one of rubber, plastic and urethane.
6. The advancer of claim 1 wherein upon movement of the cover to a position away from the slot and pair of wheels, at least one of the drive wheels is removable and replaceable by another drive wheel during a medical procedure.
7. The advancer of claim 1 wherein upon movement of the cover to a position away from the slot and pair of wheels, at least one of the wheels is removable and replaceable by another wheel during a medical procedure.
8. The advancer of claim 1 wherein a plurality of elongate medical devices are inserted into the slot, the drive wheels configured to allow a first of the devices to be driven while allowing a second of the devices not to be driven.
9. The advancer of claim 8 wherein the first device is at least partially inside the second device.
10. The advancer of claim 8 wherein the second device is held at a proximal end of the second device while the first device is being driven.
11. The advancer of claim 8 wherein each of the first and second devices is selectively driven by a user remote from the advancer.
12. The advancer of claim 1 further comprising a spring that, when the cover is in the drive position, pulls one of the wheels against the at least one elongate device in the slot and toward the other wheel so as to provide a pressure by the wheels against the device; and
wherein the spring is replaceable by another spring during a medical procedure.
13. The advancer of claim 1 further comprising a filling for a hemostasis valve adapter, the drive mechanism further comprising:
a drive shaft for driving at least one wheel of the wheel pair;
an adapter engagement wheel mounted the drive shaft; and
an adapter engagement gear configured to engage and turn a valve adapter in the filling when turned by the adapter engagement wheel.
14. An advancer for moving at least one elongate medical device, the advancer comprising:
a base having a slot with an open top and opposed sides therein;
a pair of opposed wheels having positions on opposite sides of the slots;
a drive shaft operable by a motor to drive at least one of the pair of opposed wheels to provide at least one drive wheel;
a slot cover that is movable relative to the slot and the pair of opposed wheels, such that the position of the pair of opposed wheels remains fixed while the cover moves away from the slot and pair of opposed wheels, the cover being movable between a loading position in which the top of the slot is open to allow a portion of the at least one elongate device to be inserted into the slot between the wheels, and a drive position in which the cover at least partially covers the top of the slot;
a hemostasis valve adapter filling at an end of the slot;
an adapter engagement wheel mounted on the drive shaft; and
an adapter engagement gear configured to engage and turn a valve adapter in the fitting when turned by the adapter engagement wheel.
15. The advancer of claim 14 further comprising an engagement device configured to cause the adapter engagement wheel to alternately engage and disengage the adapter engagement gear relative to the fitting.
16. The advancer of claim 15 wherein the engagement device comprises a remotely operable switch.