Abstract: A detection tube includes a main body and an optical structure. The main body includes a bottom wall and a side wall extending from a periphery of the bottom wall to a first direction, and the side wall and the bottom wall jointly form a detection groove. The optical structure is connected to the bottom wall, the optical structure includes an incident surface and an exit surface, the incident surface and the exit surface are extending from the periphery of the bottom wall to a second direction opposite to the first direction. A first distance between portions of the incident surface and the exit surface adjacent to the bottom wall is greater than a second distance between portions of the incident surface and the exit surface away from the bottom wall.

Abstract: A thrombus removal device (100) comprising a catheter (10), at least one valve (20), and a shaft (30) is provided. The catheter (10) has a proximal end (12) and a distal end (11), and defines a longitudinal axis. The at least one valve (20) is positioned and movable longitudinally inside the catheter (10). The shaft (30) is connected with the proximal end (12) of the catheter (10), and comprises a driving mechanism and a wire (34). Wherein, the wire (34) is connected to the driving mechanism at one end and connected to the at least one valve (20) at an opposite end. The driving mechanism is configured to create a sudden movement of the at least one valve (20) toward the proximal end (12) of the catheter (10). By using the thrombus removal device (100), thrombus can be removed from the body of a subject more efficiently.