Fluid exchange system for controlled and localized irrigation and aspiration
First Claim
1. A method for disrupting a lesion within a blood vessel, said method comprising:
- introducing a single catheter element into the blood vessel wherein the catheter element is comprised of an irrigation lumen terminating with at least one irrigation port at a distal end of the catheter element and an aspiration lumen terminating with at least one aspiration port;
advancing the distal end of the catheter element to a location proximal to the lesion without forming any occlusion distal to the lesion;
activating a trigger of a fluid exchange apparatus comprising an irrigation reservoir in fluid connection with the irrigation lumen and having means for controlled delivery of irrigant fluid from the irrigation reservoir through the irrigation lumen to the lesion and an aspiration lumen having means for controlled collection of aspirant fluid, wherein the activating step produces a controlled delivery of irrigant fluid from the irrigation reservoir through the irrigation lumen and wherein a mechanical linkage causes removal of aspirant fluid from the localized region through the aspiration lumen; and
wherein this step of activating the trigger produces turbulent fluid exchange at the lesion from the simultaneous delivery of irrigant fluid and removal of aspirant fluid.
1 Assignment
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Accused Products
Abstract
The control of fluid introduction into and out of body conduits such as vessels, is of great concern in medicine. As the development of more particular treatments to vessels and organs continues it is apparent that controlled introduction and removal of fluids is necessary. Fluid delivery and removal from such sites, usually referred to as irrigation and aspiration, using fluid exchange devices that control also need to be considerate of potential volume and/or pressure in the vessel or organ are described together with catheter and lumen configurations to achieve the fluid exchange. The devices include several electrically or mechanically controlled embodiments and produce both controlled and localized flow with defined volume exchange ratios for fluid management. The applications in medicine include diagnostic, therapeutic, imaging, and uses for the introduction or removal of concentrations of emboli within body cavities.
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Citations
17 Claims
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1. A method for disrupting a lesion within a blood vessel, said method comprising:
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introducing a single catheter element into the blood vessel wherein the catheter element is comprised of an irrigation lumen terminating with at least one irrigation port at a distal end of the catheter element and an aspiration lumen terminating with at least one aspiration port; advancing the distal end of the catheter element to a location proximal to the lesion without forming any occlusion distal to the lesion; activating a trigger of a fluid exchange apparatus comprising an irrigation reservoir in fluid connection with the irrigation lumen and having means for controlled delivery of irrigant fluid from the irrigation reservoir through the irrigation lumen to the lesion and an aspiration lumen having means for controlled collection of aspirant fluid, wherein the activating step produces a controlled delivery of irrigant fluid from the irrigation reservoir through the irrigation lumen and wherein a mechanical linkage causes removal of aspirant fluid from the localized region through the aspiration lumen; and wherein this step of activating the trigger produces turbulent fluid exchange at the lesion from the simultaneous delivery of irrigant fluid and removal of aspirant fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification