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US 11,890,435 B2Granted
Method and apparatus for minimizing excess drug delivery
AssigneeTerumo Kabushiki Kaisha
InventorAyu Takagi
Life of this patent
Estimating the term…
Abstract
A device and method are described for aspirating within a patient during the delivery of a drug-coated treatment device to help remove drug coating dislodged in a patient's blood. The drug treatment device can be a drug-coated balloon, a drug-coated stent, or similar devices. The device can include an occlusion balloon to help contain the dislodged drug coating and aspiration can be applied proximally, distally, or both proximally and distally of the drug coated balloon during a procedure.
Claims19
A vascular treatment system, comprising:
- a guide catheter comprising an elongated tubular body and an aspiration port in fluid communication with an interior guide catheter lumen;
- and,
- a drug-coated balloon catheter comprising a drug-coated balloon connected at a distal region of the drug-coated balloon catheter;
- wherein the drug-coated balloon has a distal portion on which a drug coating is disposed, and a proximal portion that has a fully inflated diameter sized to fit into and engage with the interior guide catheter lumen.
1 more element
A vascular treatment system, comprising:
- a guide catheter comprising an elongated tubular body and an aspiration port in fluid communication with an interior guide catheter lumen;
- and,
- a drug-coated balloon catheter comprising a drug-coated balloon connected at a distal region of the drug-coated balloon catheter, and an enlarged tubular portion connected at the distal region of the drug-coated catheter;
- wherein the drug-coated balloon catheter has a first aspiration position where a proximal portion of the drug-coated balloon is sealingly engaged with a distal opening of the interior guide catheter lumen, and where the enlarged tubular portion is in fluid communication with the interior guide catheter lumen and the aspiration port;
- and,
- wherein the drug-coated balloon catheter has a second aspiration position in which the proximal portion of the drug-coated balloon is sealingly disengaged from the distal opening of the interior guide catheter lumen, and where the enlarged tubular portion is in fluid communication with the interior guide catheter lumen and the aspiration port.
3 more elements
A vascular treatment system, comprising:
- a guide catheter;
- and,
- a drug-coated balloon catheter means for sealingly engaging a drug-coated balloon with a distal opening of an interior guide catheter lumen of the guide catheter in a first aspiration position, where in the first aspiration position the guide catheter is in fluid communication with a first space distal to the drug-coated balloon;
- and,
- wherein the drug-coated balloon catheter further comprises means for sealingly disengaging from the distal opening of the interior guide catheter lumen in a second aspiration position, where in the second aspiration position the guide catheter is in fluid communication with a second space proximal to the drug coated balloon.
2 more elements
Dependencies are inferred from the claim text.