Devices and methods for treating edema
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United States of America Patent
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Mar 19, 2024
Grant Date -
Aug 27, 2020
app pub date -
Feb 26, 2020
filing date -
Feb 26, 2019
priority date (Note) -
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Abstract
The disclosure relates to devices and methods for the treatment of edema which devices use an intravascular edema pump with an anticoagulant. The invention provides devices and methods for treating edema that use an indwelling catheter to place an impeller in a blood vessel of a patient, near an outlet of a lymphatic duct. Operating the impeller creates a local depression in blood pressure, which promotes drainage of lymph from the lymphatic system. The catheter is also used to release an anticoagulant such as heparin to wash and lubricate the impeller. Specifically, the anticoagulant inhibits clotting, hemolysis, or thrombosis from occurring and interfering with smooth operation of the impeller.
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