Clot evacuation catheter
AssigneeThe General Hospital Corporation
InventorsShahin Tabatabaei, W. Scott McDougal
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Abstract
A clot evacuation catheter includes a hollow tubular body disposed within an outer lumen. The tubular body is elongate and includes a selectively rotatable cutting blade disposed within a distal portion thereof to cut clots occluded in at least one opening of the cutting blade. The tubular body also includes a fluid conveying irrigation lumen to deliver fluid to a distal end of the catheter at predetermined times. In an alternative embodiment of the present invention, a hood member extends from the distal portion of the tubular body. The hood member has a distal end that is spaced from, but coaxial with, the distal portion of the tubular body through a side portion of the hood member.
Claims21
A clot evacuation catheter, comprising:
- an outer lumen having a longitudinal axis and an open distal end;
- an elongate tubular body having a proximal end and a distal portion with an opening therein, the tubular body being disposed within the outer lumen and having a longitudinal axis coaxial with the longitudinal axis of the outer lumen and along which a vacuum force is selectively directed;
- a disk-shaped cutting blade having at least one opening disposed therein, the cutting blade being disposed within the distal portion of the tubular body and being selectively rotatable in a plane transverse to the longitudinal axis of the tubular body, wherein the cutting blade maintains a substantially fixed longitudinal locus during rotation;
- and
- a fluid conveying irrigation lumen disposed and extending longitudinally within the catheter, the irrigation lumen having an open distal end proximal to the cutting blade.
A clot evacuation catheter, comprising:
- an outer lumen having a longitudinal axis and an open distal end;
- an elongate tubular body having a proximal end and a distal portion with an opening therein, the tubular body being disposed within the outer lumen and having a longitudinal axis coaxial with the longitudinal axis of the outer lumen and along which a vacuum force is selectively directed;
- a cutting blade disposed within the distal portion of the tubular body and being selectively rotatable in a plane transverse to the longitudinal axis of the tubular body, the cutting blade being substantially disk-shaped with at least one opening disposed therein;
- and
- a fluid conveying irrigation lumen disposed and extending longitudinally within the catheter, the irrigation lumen having an open distal end proximal to the cutting blade;
- a motive force provider in communication with the tubular body;
- a vacuum source, in communication with the tubular body;
- a vacuum force sensor in communication with the tubular body;
- and
- a control element in communication with the vacuum source, the vacuum force sensor and the motive force provider, effective to activate the vacuum source and the motive force provider when the vacuum force within the tubular body exceeds a predetermined value.
Dependencies are inferred from the claim text.