Catheter Adapter With Distal Inner Diameter Curvature Providing Kink Resistance
First Claim
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1. A vascular access device comprising:
- a catheter including a flexured portion; and
a catheter adapter having a distal end, a proximal end, an overall length extending from the distal end to the proximal end, an internal cavity, an upper portion, a lower portion and a distal tip having a catheter adapter tip opening having a circumference and through which the catheter extends, wherein the overall length is substantially equivalent at the upper portion and the lower portion, and the catheter adapter tip opening having an internal curvature defining a tapered region in the lower portion, wherein the tapered region supports the flexured portion of the catheter to provide an angle of insertion for the catheter without restricting a flow through the catheter, the tapered region being less than the overall length.
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Abstract
Catheter adapters and vascular access device including catheter adapters are discloses. The catheter adapter tip opening has an internal curvature defining a tapered region in the lower portion, but not the upper portion, to support a flexured portion of the catheter to prevent kinking and occlusion.
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Citations
35 Claims
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1. A vascular access device comprising:
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a catheter including a flexured portion; and a catheter adapter having a distal end, a proximal end, an overall length extending from the distal end to the proximal end, an internal cavity, an upper portion, a lower portion and a distal tip having a catheter adapter tip opening having a circumference and through which the catheter extends, wherein the overall length is substantially equivalent at the upper portion and the lower portion, and the catheter adapter tip opening having an internal curvature defining a tapered region in the lower portion, wherein the tapered region supports the flexured portion of the catheter to provide an angle of insertion for the catheter without restricting a flow through the catheter, the tapered region being less than the overall length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. An apparatus for preventing a restricted flow within a catheter comprising:
a catheter adapter having a distal end, a proximal end, an overall length extending from the distal end to the proximal end, an internal cavity, an upper portion, a lower portion and a distal tip having a catheter adapter tip opening through which a catheter including a flexured portion extends, wherein the overall length is substantially equivalent at the upper portion and the lower portion, the lower portion of the adapter has a curved surface to support the flexured portion of the catheter at a desired angle of insertion into a patient and to prevent kinking of the catheter, the upper portion of the adapter in contact with the catheter having a substantially straight surface and constant thickness to maintain rigidity of the catheter during insertion of the catheter into a patient. - View Dependent Claims (33, 34, 35)
Specification