Patent ID: 8721676

Claim:
A device for treating a thrombus in a vessel, the device comprising: a hypotube having a longitudinal axis, the hypotube comprising: a first pattern of longitudinally-spaced rows each comprising two kerfs and two stems, the rows of the first pattern at an angle with respect to the longitudinal axis of the hypotube, the two kerfs in each of the rows of the first pattern having rounded edges, the two stems in each of the rows of the first pattern circumferentially opposite, the stems of the first pattern offset in a first circumferential direction, and a second pattern of longitudinally-spaced rows each comprising two kerfs and two stems, the rows of the second pattern at an angle with respect to the longitudinal axis of the hypotube, the two kerfs in each of the rows of the second pattern having rounded edges, the two stems in each of the rows of the second pattern circumferentially opposite, the rows of the second pattern singly alternatingly interspersed with the rows of the first pattern, the stems of the second pattern offset in a second circumferential direction opposite the first circumferential direction, a pitch of the longitudinally-spaced kerfs of first pattern and the second pattern varying longitudinally along the hypotube; wherein the hypotube further comprises a first section having a pitch of about 0.005 inches; a second section having a pitch of about 0.01 inches; a third section having a pitch of about 0.02 inches; a fourth section having a pitch of about 0.04 inches; a fifth section having a pitch of about 0.08 inches; and a sixth section having a pitch of about 0.16 inches.