Devices and methods for removal of material in a vasculature
A device for removing material from a vasculature includes a rotation subassembly having a first central axis and a first gear, a valve subassembly having the first central axis and being adjacent to the rotation subassembly, and an actuation system having a second central axis and a second gear. The rotation subassembly is coupled to a catheter to rotate the catheter. The valve subassembly is configured to selectively allow flow of the material from the catheter to the device. The actuation system configured to actuate rotation of the rotation subassembly. The first central axis and the second central axis are parallel.
1 . A device for removing material from a vasculature, the device comprising: a rotation subassembly having a first central axis and a first gear, the rotation subassembly coupled to a catheter to rotate the catheter;
a valve subassembly having the first central axis and being adjacent to the rotation subassembly, the valve subassembly configured to selectively allow flow of the material from the catheter to the device; and
an actuation system having a second central axis and a second gear, the actuation system configured to actuate rotation of the rotation subassembly,
wherein the first central axis and the second central axis are parallel.
2 . The device of claim 1 , further comprising the catheter.
3 . The device of claim 1 , wherein the rotation subassembly comprises a body, the first gear, and a coupling configured to connect to the catheter.
4 . The device of claim 3 , wherein the body, the first gear, and the coupling are monolithic and unitary.
5 . The device of claim 3 , further comprising a protrusion extending within the coupling and forming an annular space with the body, wherein an end of the catheter is configured to be received within the annular space.
6 . The device of claim 5 , further comprising an internal threaded surface in the annular space, the internal threaded surface configured to correspond to a threaded surface on the end of the catheter.
7 . The device of claim 1 , wherein the first gear includes gear teeth and a protrusion having two lobes and the actuation system includes a helix having two protrusions, wherein the two protrusions are received within the two lobes to allow co-rotation between the helix and the first gear.
8 . The device of claim 1 , the actuation system further comprising a trigger, a free shuttle, and a drive shuttle.
9 . The device of claim 8 , wherein the free shuttle includes two protrusions configured to be received within respective openings of the trigger.
10 . The device of claim 8 , wherein the free shuttle and the drive shuttle are configured to move longitudinally along the second central axis.
11 . The device of claim 8 , wherein the drive shuttle is configured to rotate only in one direction about the second central axis.
12 . The device of claim 8 , wherein the free shuttle has a first ratchet profile and the drive shuttle has a second ratchet profile, the first ratchet profile configured to mate with the second ratchet profile.
13 . The device of claim 12 , wherein the mating of the first ratchet profile and the second ratchet profile allows rotation of the drive shuttle in a first direction and prevents rotation of the drive shuttle in a second direction.
14 . The device of claim 12 , wherein the first ratchet profile and the second ratchet profile each comprise a plurality of steps.
15 . The device of claim 8 , further comprising a helix.
16 . The device of claim 15 , wherein the helix has an external helix profile and the drive shuttle has an internal helix profile, wherein the internal helix profile is configured to mate with the external helix profile to allow relative rotation between the helix and the drive shuttle.