Venous dialysis needle
First Claim
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1. A dialysis needle comprising:
- a hollow shaft having an exterior surface, an interior surface, a central axis, an open proximal end, an open distal end, and at least two lateral openings; and
at least two non-pivotable diverters located on said interior surface of said hollow shaft, each of said diverters positioned adjacent an associated one of said lateral openings, each of said diverters being fixed in position and projecting into a lumen of said hollow shaft at an angle toward said central axis of said hollow shaft.
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Abstract
A dialysis needle using lateral openings and diverters. The diverters increase the blood flow through the lateral openings in venous needles.
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Citations
11 Claims
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1. A dialysis needle comprising:
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a hollow shaft having an exterior surface, an interior surface, a central axis, an open proximal end, an open distal end, and at least two lateral openings; and at least two non-pivotable diverters located on said interior surface of said hollow shaft, each of said diverters positioned adjacent an associated one of said lateral openings, each of said diverters being fixed in position and projecting into a lumen of said hollow shaft at an angle toward said central axis of said hollow shaft. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A dialysis needle comprising:
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a hollow shaft having an exterior surface, an interior surface, a central axis, an open proximal end, an open distal end, and at least two lateral openings; at least two non-pivotable diverters located on said interior surface of said hollow shaft, each of said diverters adjacent an associated one of said lateral openings, each of said diverters projecting into a lumen of said hollow shaft at an angle toward said central axis of said hollow shaft; and a trocar having a shaft and a distal end, said trocar being disposed within said hollow shaft. - View Dependent Claims (8, 9)
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10. A dialysis needle comprising:
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a hollow shaft having an exterior surface, an interior surface, a central axis, an open proximal end, an open distal end, and at least one lateral opening, said lateral opening located between 0.8 mm and 2.0 mm from said distal end; and a non-pivotable diverter located on said interior surface of said hollow shaft adjacent said lateral opening, said diverter projecting into a lumen of said hollow shaft at an angle toward said central axis of said hollow shaft.
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11. A dialysis needle comprising:
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a hollow shaft having an exterior surface, an interior surface, a central axis, an open proximal end, an open distal end, and at least one lateral opening, said lateral opening located between 0.8 mm and 2.0 mm from said distal end; a non-pivotable diverter located on said interior surface of said hollow shaft adjacent said lateral opening, said diverter projecting into a lumen of said hollow shaft at an angle toward said central axis of said hollow shaft; and a trocar having a shaft and a distal end, said trocar being disposed within said hollow shaft.
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Specification