VASCULAR PLAQUE REMOVAL SYSTEMS, DEVICES, AND METHODS

摘要

Systems, devices, and methods for removing plaque from a patient's vasculature are disclosed. In one example, a medical article includes a catheter body and a dissection tip. The dissection tip can move between at least a first position and a second position and can be biased to expand radially from a longitudinal axis of the medical article when the dissection tip is moved from the first position to the second position. In one example, a dissection member includes a dissection tip, a receiving space, and a severing element, such as, for example a thrombus-breaking element. The dissection tip can radially adjust to circumferentially maneuver between a core of plaque or a blood clot and a patient's vasculature. The receiving space can receive the plaque or clot that passes within the dissection tip. The severing element can at least partially sever or break apart the plaque or clot.

主权项

1. A method comprising:
introducing a medical article into a patient's vasculature, the medical article comprising a radially-adjustable dissection tip, a receiving space disposed proximal to the dissection tip, a casing layer disposed circumferentially around at least a portion of the dissection tip and defining the receiving space, a helical thrombus-breaking element positioned within the receiving space, and an aspiration lumen disposed proximal to the receiving space; positioning the dissection tip between a blood clot and an outer wall of the patient's vasculature; and receiving the blood clot in the receiving space.