Re-entry stylet for catheter
First Claim
Patent Images
1. A stylet for re-entry into a vessel comprising:
- an elongate body having a proximal portion, a middle curved portion, a pointed distal end, and a longitudinal axis extending through the proximal portion, the middle curved portion, and the pointed distal end;
wherein the proximal portion and the middle curved portion have substantially circular cross-sections, and wherein the middle curved portion has a pre-shaped curve along the longitudinal axis configured to match a curve of an occlusion-crossing device;
wherein the pointed distal end has an s-shaped curve along the longitudinal axis and a flattened portion along the longitudinal axis, the flattened portion having a substantially oblong cross-section; and
wherein the flattened portion tapers to a sharp tip at the pointed distal end.
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Accused Products
Abstract
A stylet for re-entry into a vessel includes an elongate body including a proximal portion, a middle curved portion, a pointed distal end, and a longitudinal axis extending through the proximal portion, the middle curved portion, and the pointed distal end. The proximal portion and the middle curved portion have substantially circular cross-sections. The middle curved portion has a pre-shaped curve along the longitudinal axis configured to match a curve of an occlusion-crossing device. The pointed distal end has an s-curve along the longitudinal axis and a flattened portion along the longitudinal axis, the flattened portion having a substantially oblong cross-section.
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Citations
17 Claims
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1. A stylet for re-entry into a vessel comprising:
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an elongate body having a proximal portion, a middle curved portion, a pointed distal end, and a longitudinal axis extending through the proximal portion, the middle curved portion, and the pointed distal end; wherein the proximal portion and the middle curved portion have substantially circular cross-sections, and wherein the middle curved portion has a pre-shaped curve along the longitudinal axis configured to match a curve of an occlusion-crossing device; wherein the pointed distal end has an s-shaped curve along the longitudinal axis and a flattened portion along the longitudinal axis, the flattened portion having a substantially oblong cross-section; and
wherein the flattened portion tapers to a sharp tip at the pointed distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of re-entering a true lumen during occlusion-crossing comprising:
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orienting a distal end of a catheter having a bend therein towards the true lumen of a vessel; introducing a stylet through a guidewire channel of the catheter, the stylet comprising; an elongate body having a proximal portion, a middle curved portion, a pointed distal end, and a longitudinal axis extending through the proximal portion, the middle curved portion, and the pointed distal end, wherein the proximal portion and the middle curved portion have substantially circular cross-sections, and wherein the middle curved portion has a pre-shaped curve along the longitudinal axis configured to match a curve of an occlusion-crossing device, wherein the pointed distal end has an s-shaped curve along the longitudinal axis and a flattened portion along the longitudinal axis, the flattened portion having a substantially oblong cross-section, wherein the flattened portion tapers to a sharp tip at the pointed distal end, and wherein inserting the stylet comprises inserting until the curved middle portion of the stylet aligns with the bend in the catheter and the pointed distal end of the stylet extends out of a distal end of the catheter; and advancing the stylet such that the pointed distal end pierces through a wall of the vessel; and directing the catheter over the stylet and into the true lumen of the vessel. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification