Thrombectomy device

A thrombectomy device for removing matter from a body lumen, the device comprising:

• a catheter member having a proximal part and a distal part;
• a thrombus blocking body disposed adjacent the distal part of the catheter member and radially expandable between a contracted orientation and an expanded, thrombus-blocking orientation configured to exert force against a wall of the body lumen and stop proximal movement of thrombi, the thrombectomy device including only one thrombus blocking body;
• a thrombus capture cage disposed at a distal-most end of the catheter member, in an axially spaced-apart relationship to the thrombus blocking body, and positioned distally of the thrombus blocking body, the thrombus capture cage being radially expandable between a contracted orientation and an expanded, thrombus-capture orientation configured to exert force against a wall of the body lumen;
• a control arm operably connected to the thrombus capture cage and configured to move the thrombus capture cage axially along the body lumen, wherein the control arm is operably connected to a proximal end of the thrombus capture cage;
• and
• an extractor, the extractor having an extractor tube and an auger, the extractor tube including a distal open end disposed within the thrombus capture cage, and the auger extending through the extractor tube and distal of the distal open end of the extractor tube,
• wherein the thrombus blocking body includes a dovetail shape including an axial extension that projects towards the thrombus capture cage, and engagement between the thrombus capture cage and the extension causes the thrombus blocking body to surround a proximally tapering portion of the thrombus capture cage.

A thrombectomy device for removing matter from a body lumen, the device comprising:

• a catheter member having a proximal part and a distal part;
• a thrombus blocking body disposed adjacent the distal part of the catheter member and radially expandable between a contracted orientation and an expanded, thrombus-blocking orientation, the thrombectomy device including only one thrombus blocking body;
• a thrombus capture cage disposed at a distal-most end of the catheter member, in an axially spaced-apart relationship to the thrombus blocking body, and positioned distally of the thrombus blocking body, the thrombus capture cage being radially expandable between a contracted orientation and an expanded, thrombus-capture orientation;
• a control arm operably connected to the thrombus capture cage and configured to move the thrombus capture cage axially along the body lumen, wherein the control arm is operably connected to a proximal end of the thrombus capture cage;
• and
• an extractor, the extractor having an extractor tube and an auger, the extractor tube including a distal open end disposed within the thrombus capture cage, and the auger extending through the extractor tube and distal of the distal open end of the extractor tube,
• wherein the thrombus blocking body in the expanded, thrombus-blocking orientation, and the thrombus capture cage in the expanded, thrombus capture orientation, in the axially spaced-apart relationship, are configured to form a thrombus-trapping space together with a wall of the body lumen,
• wherein the thrombus capture cage includes a proximally tapering portion, and
• wherein the thrombus blocking body includes a dovetail shape, and engagement between the thrombus capture cage and the thrombus blocking body causes the thrombus blocking body to surround the proximally tapering portion of the thrombus capture cage.