Stryker Corporation
DEVICES FOR REMOVING OBSTRUCTING MATERIALS FROM BLOOD VESSELS

Abstract:

A medical device includes a shaft; and a cage coupled to the shaft, the cage comprising elongated cutting members configured to cut material(s) inside a blood vessel lumen, the cage including a first end and a second end, wherein one or both of the first end and second end are moveable along a longitudinal axis of the shaft to change a distance between them; wherein the cage has a naturally expanded configuration with a first cross sectional dimension; wherein the cage is collapsible to form a collapsed configuration in response to an increase in the distance between the first end and the second end of the cage; and wherein the medical device further comprises a control configured to apply a radial force to expand the cage beyond its naturally expanded configuration with a second cross sectional dimension that is larger than the first cross sectional dimension.