Device and method for preventing kidney failure
First Claim
1. A device for preventing kidney failure, comprising:
- a housing having an inside surface, an outside surface and two ends;
an internal passage extending between the two ends and bound by the inside surface; and
the device being adapted to be inserted in or around a renal artery to restrict blood flow through a renal artery.
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Accused Products
Abstract
A method and devices for protecting kidneys from irreversible damage. The method is based on controlling or restricting blood flow through renal arteries in order to prevent kidney failure. The devices are delivered to a renal artery for restricting the flow of blood through the artery to the kidney. The devices may take the form of internal restrictors, such as an orifice, a venturi, a tapered coil, or a perforated sleeve that is inserted in a renal artery, or external devices such as an inflatable cuff or balloon, or a clamp that is placed around a renal artery. The improved method of the present invention includes means for delivering the internal devices to renal arteries by a percutaneous catheter system, or external devices by endoscopic devices or surgery.
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Citations
23 Claims
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1. A device for preventing kidney failure, comprising:
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a housing having an inside surface, an outside surface and two ends;
an internal passage extending between the two ends and bound by the inside surface; and
the device being adapted to be inserted in or around a renal artery to restrict blood flow through a renal artery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of preventing kidney failure comprising the steps of:
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forming a device for use with a renal artery to restrict blood flow through the renal artery; and
inserting the device in or on the renal artery to restrict blood flow through the renal artery. - View Dependent Claims (12, 13, 14, 15, 16, 17, 19, 20)
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18. A device for preventing kidney failure by insertion into a renal artery, comprising:
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a housing having an inside surface, an outside surface and two ends; and
an internal passage extending between the two ends and bound by the inside surface;
a flow restrictor for restricting blood flow through the renal artery formed in the internal passage.
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21. A device for preventing kidney failure by placement around an outside surface of a renal artery, comprising:
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a housing having an inside surface, an outside surface and two ends; and
the housing has a restricted internal passage between the two ends to restrict blood flow through the renal artery. - View Dependent Claims (22, 23)
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Specification