Method and catheter system applicable to acute renal failure
First Claim
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1. A method to protect a kidney in a mammalian patient comprising:
- a. artificially increasing pressure in a urinary tract of at least one kidney of the patient;
b. reducing a renal function of the kidney by maintaining the increased pressure, and c. reducing the pressure in the urinary tract to increase the renal function above the reduced renal function.
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Abstract
A method and apparatus for protection of a kidney from damage associated with temporary medullary hypoxia. The treatment is achieved by temporarily and reversibly increasing fluid pressure in the renal pelvis or blood pressure in the renal vein. Increased pressure is maintained at a safe level for the duration of treatment. The steps of the method include: artificially increasing pressure in a urinary tract of at least one kidney of the patient; reducing a renal function of the kidney by maintaining the increased pressure, and reducing the pressure in the urinary tract to increase the renal function above the reduced renal function.
215 Citations
97 Claims
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1. A method to protect a kidney in a mammalian patient comprising:
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a. artificially increasing pressure in a urinary tract of at least one kidney of the patient;
b. reducing a renal function of the kidney by maintaining the increased pressure, and c. reducing the pressure in the urinary tract to increase the renal function above the reduced renal function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method to prevent or treat contrast nephropathy in a mammalian patient undergoing a radiographic procedure comprising:
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a. artificially increasing pressure in a urinary tract of at least one kidney of the patient;
b. injecting the contrast agent into a blood vessel of the patient, and c. reducing pressure in the urinary tract of the kidney. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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45. A method to inhibit a natural function of a kidney of a patient during surgery:
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a. artificially increasing a pressure in a urinary tract of at least one kidney of the patient, b. performing the surgery on the patient, and c. reducing pressure in the urinary tract of the kidney to substantially a pressure level existing before step (a). - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. A system for preventing or treating acute renal failure in a mammalian patient comprising:
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means for artificially increasing pressure in the urinary tract of at least one kidney to reduce a renal function of the kidney;
monitoring means for sensing and displaying a pressure related to the pressure in the means for artificially increasing pressure, and means for restoring said pressure and to restore the renal function. - View Dependent Claims (68, 69, 70, 71, 72, 73)
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74. A system to treat at least one kidney of a mammalian patient, said system comprising:
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a catheter positionable in a urinary tract leading from the at least one kidney;
said catheter having a distal tip with an occlusion device and a pressure sensing port, wherein the occlusion device has an occlusion mode and a passive mode;
a pressure sensor in fluid communication with the pressure sensing port, and said occlusion device operating in said occlusion mode to elevate a pressure in the urinary tract to a pressure sufficient to inhibit a renal function. - View Dependent Claims (75, 76, 77, 78, 79, 80)
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81. A system to temporarily reduce a natural function of at least one kidney of a mammalian patient, said system comprising:
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a catheter positionable in a bladder of the patient;
said catheter having a distal end with an occlusion device, and an infusion fluid port;
a pressure device coupled to a fusion fluid supply and elevating the pressure of the infused fluid feed to the fluid port, wherein the occlusion device has an occlusion mode and a passive mode;
an infusion fluid supply connectable to a proximal section of the catheter and in fluid communication with the fluid port, wherein the occlusion device has an occlusion mode to occlude the bladder while the infusion fluid is infused into the bladder, and a release mode for allowing the bladder to drain of the infused fluid. - View Dependent Claims (82, 83, 84, 85, 86, 87, 88, 89, 90)
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91. A method to elevate pressure in a urinary at least one kidney of a mammalian patient, said method comprising:
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a. inserting a catheter tip into a ureter of the patient;
b. obstructing fluid flow from the kidney and through the ureter by with the tip;
c. elevating a fluid pressure in the ureter by the obstructed fluid flow;
d. affecting a function of the kidney by the elevated fluid pressure, and e. releasing the obstructed fluid through the ureter by deactivating or removing the catheter tip, and f. resuming the kidney function after releasing the obstructed fluid. - View Dependent Claims (92, 93, 94, 95, 96, 97)
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Specification