Abstract: A disposable thrombectomy maceration and aspiration system for macerating and aspirating thrombus or other obstructive material in a lumen of a vascular graft or vessel. The system includes three major components: a disposable integrated aspiration pump and fluid collection device for generating aspiration vacuum pressure and collecting macerated particulate, a disposable integrated thrombectomy and aspiration apparatus removably coupled to the device configured to macerate the thrombus with a motor powered maceration wire while including an aspiration pathway for aspirating the macerated particulate into the device, and a catheter removably coupled to the apparatus and covering a portion of the maceration wire for insertion into the patient to the thrombus site. The catheter is of sufficient size to allow the macerated particulate to be aspirated from a distal opening through the catheter and apparatus before being deposited into the fluid collection compartment of the device.

Abstract: A core-severing cannula for use with tissue biopsy devices, comprising a plurality of flexible fingers for severing a tissue core. The core-severing cannula is positioned coaxially outside of a core-cutting cannula, and is slidable relative to the core-cutting cannula. As the device is activated, the core cutting cannula and core-severing cannula advance together to cut a core of tissue. Subsequently, the core-severing cannula is advanced relative to the core cutting cannula, and the fingers of the core-severing cannula assume a closed position to sever the core from the target site.