Flow elements for use with flexible spinal needles, needle assemblies and methods therefor
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United States of America Patent
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Oct 16, 2012
Grant Date -
Jul 23, 2009
app pub date -
Jan 17, 2008
filing date -
Jan 17, 2008
priority date (Note) -
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Abstract
A flow element for use with flexible needles and flexible needle assemblies to minimize flow occlusion within a flexible needle is provided. The flow element is particularly suited for uses with a flexible needle for minimizing incidence of post-dural puncture headache. The flow element includes a body having an internal flow path for conducting a fluid through a flexible needle, and an anti-restriction member. The anti-restriction member includes an elongated body, a proximal end coupled to the body within the internal flow path, and a distal end for disposing at least a portion of the elongated body within a flexible needle. A flexible spinal needle assembly for minimizing flow occlusion through an internal flow path of a flexible needle by unintended kinking that is potentially caused by ligament or muscle layer movements is also provided.
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