Cannula with flow diversion mechanism and methods of use
AssigneeEmbol-X, Inc.
InventorsRichard O. Murphy, Richard S. Lilly
Life of this patent
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Abstract
A cannula is described that includes a diverter mechanism in the form of a blast plate deployable from within the lumen of the cannula and retractable from the lumen of the cannula. The blast plate may take the form of a planar surface, a curved surface, a membrane mounted on a wire ring, or a conical sleeve, or any other suitable shape. In use, the cannula is inserted in a vessel, the blast plate is deployed in the lumen of the cannula beyond the distal end of the cannula, and blood flow is passed through the cannula and against the blast plate. Alternative devices and methods are also described.
Claims32
A cannula, comprising:
- an elongate tubular member having a proximal end, a distal end, and a lumen therebetween;
- and
- a blast plate deployable from within the lumen of the elongate tubular member and retractable into the lumen of the elongate tubular member;
- wherein, during use, the distal end of the elongate tubular member is inserted into a vessel, the blast plate is deployed from the lumen of the elongate tubular member beyond the distal end of the elongate tubular member, and blood flow is passed through the lumen of the elongate tubular member and against the blast plate.
A surgical method, comprising the steps of:
- inserting a cannula into a blood vessel, the cannula comprising an elongate tubular member having a proximal end, a distal end, and a lumen therebetween;
- advancing a blast plate from the lumen of the elongate tubular member beyond the distal end of the elongate tubular member;
- flowing a blood stream through the lumen of the elongate tubular member against the blast plate, wherein the blood stream is diffused by the blast plate;
- and
- retracting the blast plate into the lumen of the elongate tubular member.
Dependencies are inferred from the claim text.