Device and method for treating a chronic total occlusion

摘要

A device and method for opening blood vessel blockages, such as chronic total occlusions, is disclosed. The device has a main body and motor unit. The main body has an inner tubular member disposed inside an outer tubular member. The inner tubular member is reinforced with hydrophilic polymer coated wires, which are drawn out into two pairs of loops at the distal end of the device. The motor unit also has an inner tubular member disposed within an outer tubular member. The motor unit is used to create torque to rotate the main body having the pairs of loops. When torque transmitted to main body, the device spins. As the device is advanced through a blood vessel, the rotating loops penetrate and break down the occlusion, and recanalizes the blood vessel. Then device is then exchanged over a guidewire and further therapeutic interventions can be performed to improve blood flow.

主权项

1. A vascular drilling device for crossing an occluded blood vessel, said device having a main body comprising:
an outer tubular member; an inner tubular member interposed within said outer tubular member, said outer and inner tubular members being configured for traversing a patient's vasculature and having a central hole for receiving a guidewire; a distal end cap secured to said outer tubular member and said inner tubular member; a plurality of distal end loops projecting in a distal direction from said distal end cap for fracturing an occlusion; and, a plurality of outer loops projecting radially outwardly from said outer tubular member, whereby said distal end loops and said outer loops fracture an occlusion within a blood vessel when said distal end loops and said outer loops are rotated and pushed through said occluded blood vessel.