Catheter systems for crossing total occlusions in vasculature
First Claim
1. A catheter system for use in vasculature, comprising:
- a catheter body including a body lumen;
a nosecone coupled to a distal end of the catheter body, the nosecone including a nosecone lumen, a lateral port, and a distal port, wherein a proximal section of the nosecone lumen is in communication with the body lumen, a middle section of the nosecone lumen is configured to include a passive deflection region in communication with the lateral port and the proximal section, and a distal section of the nosecone lumen is in communication with the distal port and the proximal section; and
a marker in the nosecone configured to present as a plurality of symbols that indicate relative orientation of the lateral port to a target site in the vasculature.
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Accused Products
Abstract
Medical devices and methods are described that include catheter systems for use in vasculature. The catheter systems include a re-entry catheter for use with numerous guide wires to direct the guide wire from the extraluminal or subintimal space back into a true lumen after the guide wire has entered the subintimal space. An example of the re-entry catheter is a single lumen catheter configured to facilitate placement and positioning of guide wires and catheters within vasculature. An embodiment places and positions guide wires and catheters within peripheral vasculature. More specifically, the re-entry catheter provides for re-entry of a guide wire back into the true lumen of peripheral vasculature from a subintimal space.
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Citations
21 Claims
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1. A catheter system for use in vasculature, comprising:
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a catheter body including a body lumen;
a nosecone coupled to a distal end of the catheter body, the nosecone including a nosecone lumen, a lateral port, and a distal port, wherein a proximal section of the nosecone lumen is in communication with the body lumen, a middle section of the nosecone lumen is configured to include a passive deflection region in communication with the lateral port and the proximal section, and a distal section of the nosecone lumen is in communication with the distal port and the proximal section; and
a marker in the nosecone configured to present as a plurality of symbols that indicate relative orientation of the lateral port to a target site in the vasculature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for re-entering a true lumen of vasculature from a subintimal space, comprising:
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advancing a catheter over a wire into the subintimal space and retracting the wire;
locating and positioning a lateral port of the catheter approximately adjacent a target re-entry site of the true lumen using information of a plurality of symbols presented by a marker in a distal region of the catheter during visualization; and
advancing the wire through the lateral port in to the true lumen, wherein the true lumen is re-entered by the wire. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification