NEEDLE IN CATHETER CANNULATION SYSTEMS AND METHODS
First Claim
Patent Images
1. A catheter assembly comprising:
- an elongate catheter extending from a proximal end to a distal end with a catheter lumen disposed therein;
a needle disposed within the catheter lumen such that the needle is axially displaceable, by a practitioner, within the catheter lumen, the needle comprising a needle lumen; and
a guidewire disposed within the needle lumen such that the guidewire is axially displaceable, by a practitioner, within the needle lumen.
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Abstract
A cannulation system which may comprise a needle disposed within a catheter is disclosed. The needle may be coupled to a needle wire to facilitate displacement of the needle within the catheter. In some embodiments, a guidewire may be disposed within the needle and/or the catheter. This system and associated methods may facilitate needle placement and vascular cannulation.
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Citations
17 Claims
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1. A catheter assembly comprising:
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an elongate catheter extending from a proximal end to a distal end with a catheter lumen disposed therein; a needle disposed within the catheter lumen such that the needle is axially displaceable, by a practitioner, within the catheter lumen, the needle comprising a needle lumen; and a guidewire disposed within the needle lumen such that the guidewire is axially displaceable, by a practitioner, within the needle lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of vascular access, the method comprising:
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extending a needle through a patient'"'"'s skin into a vascular lumen wherein a proximal portion of the needle is disposed within a catheter lumen of a catheter; advancing a guidewire through a needle lumen such that a distal end of the guidewire is disposed within the vascular lumen and a proximal portion of the guidewire is disposed within the catheter lumen; proximally displacing the needle to withdraw the needle from the vascular lumen and from the catheter lumen; and advancing the catheter distally along the guidewire until a distal end of the catheter is disposed within the vascular lumen. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification