Systems and method for controlling renovascular perfusion
First Claim
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1. A method of treating a patient comprising the steps of:
- providing a blood perfusion modification device;
positioning the blood perfusion modification device in the patient'"'"'s renovascular circulation or immediately adjacent thereto;
providing a sensor;
positioning the sensor in a renal artery or upstream thereof to generate a signal indicative of a need to modify renal perfusion; and
activating, deactivating or otherwise modifying the blood perfusion modification device as a function of the sensor signal to cause an increase in renal perfusion.
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Abstract
Devices, systems and methods by which the real or apparent renovascular perfusion and intrarenal pressure may be selectively and controllably increased. By selectively and controllably increasing renovascular perfusion and interstitial hydrostatic pressure when the heart is unable to pump sufficient blood or when renal perfusion is suboptimal, the present invention reduces or reverses neurohormonal activation and fluid retention, and thereby minimizes their deleterious effects on the heart, vasculature, kidneys and other body systems.
529 Citations
30 Claims
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1. A method of treating a patient comprising the steps of:
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providing a blood perfusion modification device;
positioning the blood perfusion modification device in the patient'"'"'s renovascular circulation or immediately adjacent thereto;
providing a sensor;
positioning the sensor in a renal artery or upstream thereof to generate a signal indicative of a need to modify renal perfusion; and
activating, deactivating or otherwise modifying the blood perfusion modification device as a function of the sensor signal to cause an increase in renal perfusion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of treating a patient having a clinical condition, the method comprising the steps of:
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diagnosing or monitoring the clinical condition or a sign thereof;
providing a blood perfusion modification device;
positioning the blood perfusion modification device in the patient'"'"'s renovascular circulation or immediately adjacent thereto; and
activating, deactivating or otherwise modifying the blood perfusion modification device to cause an increase in renal perfusion to thereby treat the clinical condition. - View Dependent Claims (14, 15, 16, 17, 18, 19)
providing a sensor;
positioning the sensor in, on or adjacent the patient to generate a signal indicative of a need to modify renal perfusion; and
wherein the step of activating, deactivating or otherwise modifying the blood perfusion modification device is performed as a function of the sensor signal to cause an increase in renal perfusion to thereby treat the clinical condition.
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15. A method as in claim 14, wherein the sensor is positioned upstream of the modification device.
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16. A method as in claim 13, wherein the clinical condition comprises congestive heart failure, and wherein the diagnosing or monitoring step comprises diagnosing or monitoring the congestive heart failure condition.
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17. A method as in claim 13, wherein the clinical condition comprises hypertension, and wherein the diagnosing or monitoring step comprises diagnosing or monitoring the hypertension condition.
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18. A method as in claim 13, wherein the clinical condition comprises renal failure, and wherein the diagnosing or monitoring step comprises diagnosing or monitoring the renal failure.
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19. A method as in claim 13, wherein the clinical condition comprises a cardiovascular or renal abnormality, and wherein the diagnosing or monitoring step comprises diagnosing or monitoring the cardiovascular or renal abnormality.
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20. A method of treating a patient comprising the steps of:
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providing a blood perfusion modification device;
positioning the blood perfusion modification device in the patient'"'"'s renovascular circulation or immediately adjacent thereto;
providing a sensor;
positioning the sensor in a renal artery or upstream thereof to generate a signal indicative of a need to modify renal perfusion; and
activating, deactivating or otherwise modifying the blood perfusion modification device as a function of the sensor signal to cause an increase in renal perfusion, wherein the sensor generates a signal indicative of urine production, and wherein the modification device is activated, deactivated or otherwise modified when the urine production falls below or rises above a predetermined threshold value. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification