Thrombectomy systems and devices and methods of using the same

A thrombectomy system, comprising:

• a thrombectomy sheath, comprising:
• a circumferential outer wall comprising a flexible polymer material reinforced with a reinforcement comprising a metallic material, configured as an elongated tube having a lumen therethrough;
• and
• a sonovisible element positioned at or near a distal end of the circumferential outer wall;
• wherein the thrombectomy sheath is sized and shaped to be at least partially positioned within a vein proximal to a thrombus or other item within the vein and further configured to expand to contact the vein to secure the thrombectomy sheath within the vein;
• and
• wherein the lumen is sized and shaped to receive a device selected from the group consisting of a balloon catheter and a snare having a loop;
• and
• a first obturator configured to fit within the lumen of the thrombectomy sheath, the first obturator comprising a flange configured to engage a proximal coupler of the thrombectomy sheath and defining a tapered portion at a distal end, the tapered portion configured to extend from the distal end of the thrombectomy sheath so to dilate the vein when advanced therein.

A thrombectomy method, comprising the steps of:

• positioning a distal end of a thrombectomy sheath over a guidewire positioned within a vein, the thrombectomy sheath comprising:
• a circumferential outer wall reinforced with a reinforcement, configured as an elongated tube having a lumen therethrough, and
• a sonovisible element positioned at or near the distal end of the circumferential outer wall,
• wherein the thrombectomy sheath is sized and shaped to be at least partially positioned within a vein proximal to a thrombus or other item within the vein and further configured to expand to contact the vein to secure the thrombectomy sheath within the vein, and
• wherein the lumen is sized and shaped to receive a device selected from the group consisting of a balloon catheter and a snare having a loop;
• advancing the thrombectomy sheath having a first obturator positioned therein along the guidewire so to dilate the vein at the thrombectomy sheath;
• advancing the device through the lumen of the thrombectomy sheath so that a distal element of the device is positioned distal to the thrombus.