R-X needle
First Claim
Patent Images
1. A needle for insertion in the subarachnoid space of the human body and the like, said needle comprising:
- a cannula having a bore therethrough and a hub thereon;
a stylet having an exterior diameter smaller than the bore of the cannula to allow passage therethrough; and
a point on the cannula having substantially the same diameter as the bore of the cannula a first angled surface, a horizontal surface extending from the first angled surface, and a second angled surface extending from one end of the horizontal surface.
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Accused Products
Abstract
An improved needle for use in administering anesthetics, analgesic medications, and the like into the spinal canal through the dura of the spinal cord into the subarachnoid space. The needle comprising a cannula including an improved, unobstructed point thereon and an associated stylet.
47 Citations
15 Claims
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1. A needle for insertion in the subarachnoid space of the human body and the like, said needle comprising:
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a cannula having a bore therethrough and a hub thereon; a stylet having an exterior diameter smaller than the bore of the cannula to allow passage therethrough; and a point on the cannula having substantially the same diameter as the bore of the cannula a first angled surface, a horizontal surface extending from the first angled surface, and a second angled surface extending from one end of the horizontal surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification