System and Method for Treating Pulmonary Edema
First Claim
1. A method of treating edema, comprising:
- creating a restriction within a vein of a patient, the restriction being created at a single location upstream from an outflow port of a lymph duct and being effective to at least partially restrict blood flow within the vein past the restriction; and
forming a low pressure zone within the vein at a position downstream of the location of the restriction as a result of creating the restriction, the low pressure zone being effective to enhance clearance of lymphatic fluid from the lymph duct.
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Accused Products
Abstract
Systems, methods, and devices are provided for the treatment of edema. In one aspect a method for implanting an indwelling catheter within a vein of a patient is provided. The catheter can extend from a position upstream of at least one outflow port of a duct of the lymph system to a terminal position downstream of the at least one outflow port. In use, a first restriction can be created within the vein proximal to a distal region of the catheter. The first restriction can define a localized low pressure zone distal of the restriction and within a portion of the vein housing the catheter. The low pressure zone can be adjacent to the at least one outflow port to enable fluid to pass from the at least one lymph duct outflow port into the vein.
42 Citations
18 Claims
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1. A method of treating edema, comprising:
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creating a restriction within a vein of a patient, the restriction being created at a single location upstream from an outflow port of a lymph duct and being effective to at least partially restrict blood flow within the vein past the restriction; and forming a low pressure zone within the vein at a position downstream of the location of the restriction as a result of creating the restriction, the low pressure zone being effective to enhance clearance of lymphatic fluid from the lymph duct. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An indwelling catheter system configured to be implantable within a vein of a patient, comprising:
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a catheter having a lumen configured to accommodate passage of fluid therethrough; an inflow port formed in a wall of the catheter; a single selectively deployable restrictor for creating a restriction in the vein, the single restrictor coupled to the catheter at a location proximal to the inflow port, the restriction being effective to occlude the vein and to at least partially restrict blood flow within the vein so as to create a low pressure zone downstream of the restriction; and an activation lumen associated with the catheter and configured to enable selective activation of the single restrictor. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification