Abstract: A thrombectomy device (1) for removing matter from a body lumen comprising a handle (3), a catheter member (2) extending from the handle (3) having a distal control arm (5) and a proximal control arm (6), a radially expansible member (4) on the distal control arm radially expansible between a contracted position and an expanded, thrombus-capture, position in response to axial movement of the distal control arm (5); and a thrombus extraction mechanism (14) extending through the distal control arm (5) wherein the extraction mechanism (14) and the distal control arm (5) are coupled to enjoy a synchronised axial movement so that the extraction mechanism (14) is positionally axially fixed with respect to the distal control arm (5).