Thrombectomy device

1 . A thrombectomy device for removing matter from a body lumen comprising:

a handle including a distal control arm housing;

a catheter member extending from the handle, the catheter member having a distal control arm and a proximal control arm;

wherein the proximal control arm at least partially surrounds the distal control arm;

a radially expansible member coupled to the distal control arm proximate to a distal end of the radially expansible member, and the radially expansible member coupled to the proximal control arm along a proximal end of the radially expansible member;

wherein the radially expansible member is configured to transition between a contracted position and an expanded, thrombus-capture, position in response to axial movement of the distal control arm relative to the proximal control arm;

a thrombus extraction mechanism, including a helical coil, extending through the distal control arm; and

a rotation mechanism attached to the distal control arm and the rotation mechanism is in or adjacent to the distal control arm housing;

wherein the rotation mechanism includes a drive train slidably connected to the thrombus extraction mechanism, the drive train configured to facilitate axial translation of the helical coil of the thrombus extraction mechanism;

wherein the thrombus extraction mechanism and the distal control arm are configured to be coupled to effect axial movement so that the thrombus extraction mechanism is positionally axially fixed with respect to the distal control arm;

wherein the rotation mechanism is configured to translate axially within or adjacent to the distal control arm housing.

2 . The thrombectomy device as claimed in claim 1 , wherein the thrombus extraction mechanism and the distal control arm are configured to be coupled at the handle to effect synchronized axial movement.

3 . The thrombectomy device as claimed in claim 1 further comprising: at least one extraction window on the distal control arm; wherein the at least one extraction window is positionally axially fixed with respect to the helical coil and the at least one extraction window has a longitudinal and circumferential axis along the distal control arm.

4 . The thrombectomy device as claimed in claim 3 wherein the helical coil comprises a shorter pitch at or adjacent the at least one extraction window and a longer pitch towards the handle.

5 . The thrombectomy device as claimed in claim 1 wherein the helical coil includes a distal small diameter coil portion proximate to an extraction window on the distal control arm and a proximal large diameter coil portion contiguous with the small diameter coil portion towards the handle.

6 . The thrombectomy device as claimed in claim 1 wherein the helical coil has a variable thickness or cross-sectional area.

7 . The thrombectomy device as claimed in claim 1 wherein the thrombus extraction mechanism and the distal control arm are coupled at a biasing mechanism in the distal control arm housing.

8 . The thrombectomy device as claimed in claim 7 wherein the biasing mechanism biases the thrombus extraction mechanism proximally or distally relative to the proximal control arm.

9 . The thrombectomy device as claimed in claim 7 further comprising a manually operable over-ride mechanism to over-ride the biasing mechanism.

10 . The thrombectomy device as claimed in claim 1 further comprising a guide wire lumen through the catheter member.

11 . The thrombectomy device as claimed in claim 1 wherein the thrombus extraction mechanism is positioned over a guidewire lumen and the guidewire lumen is not rotationally coupled to the thrombus extraction mechanism.

12 . The thrombectomy device as claimed in claim 1 further comprising an extraction port in fluid communication with the thrombus extraction mechanism for extracting thrombus from the thrombus extraction mechanism.

13 . The thrombectomy device as in claim 1 wherein the thrombus extraction mechanism and the distal control arm are configured to translate axially in a synchronized movement; and

wherein the rotation mechanism is configured to translate axially within the distal control arm housing with the distal control arm in a synchronized movement.