Device and method of ablative cutting with helical tip
First Claim
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1. A catheter assembly, comprising:
- a catheter comprising;
a distal tip comprising a first surface having a helical shape, the first surface comprising a first terminus and a second terminus, the second terminus disposed distally relative to the first terminus, wherein the distal tip further comprises a sharp cutting second surface connecting the first terminus to the second terminus, wherein the second surface faces in a direction toward a portion of the first surface;
a lumen disposed interiorly to the first surface and extending proximally from the distal tip; and
an orifice forming an entrance to the lumen; and
a plurality of optical fibers comprising distal ends, the distal ends disposed in a helical array in the first surface of the distal tip, wherein the sharp cutting second surface is arranged in the distal tip so as to cut in a direction tangential to a direction of emission of light from the optical fibers.
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Accused Products
Abstract
Catheter devices for ablation and removal of occlusions from blood vessels and methods of using the same are provided. Catheter devices are useful to ablate, cut, dislodge, and otherwise remove occlusions within a blood vessel that may limit or prevent proper circulation. Distal features of the catheter devices comprise arrangements of laser ablative or mechanical cutting features that generally provide enhanced surface areas and cutting functions. Spiral or helical arrangements are provided to aid in cutting operations.
757 Citations
11 Claims
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1. A catheter assembly, comprising:
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a catheter comprising; a distal tip comprising a first surface having a helical shape, the first surface comprising a first terminus and a second terminus, the second terminus disposed distally relative to the first terminus, wherein the distal tip further comprises a sharp cutting second surface connecting the first terminus to the second terminus, wherein the second surface faces in a direction toward a portion of the first surface; a lumen disposed interiorly to the first surface and extending proximally from the distal tip; and an orifice forming an entrance to the lumen; and a plurality of optical fibers comprising distal ends, the distal ends disposed in a helical array in the first surface of the distal tip, wherein the sharp cutting second surface is arranged in the distal tip so as to cut in a direction tangential to a direction of emission of light from the optical fibers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A catheter assembly, comprising:
a catheter comprising; a distal tip comprising a first surface having a helical configuration, the first surface comprising a first terminus and a second terminus, the second terminus disposed distally relative to the first terminus, wherein the distal tip further comprises a sharp cutting second surface connecting the first terminus to the second terminus, wherein the second surface faces in a direction toward a portion of the first surface; a lumen disposed interiorly to the first surface and extending proximally from the distal tip, the lumen configured to receive material to be removed from a patient; and an orifice forming an entrance to the lumen; and a plurality of optical fibers comprising distal ends, the distal ends disposed in a helical array in the first surface of the distal tip, wherein the sharp cutting second surface is arranged in the distal tip so as to cut in a direction tangential to a direction of emission of light from the optical fibers. - View Dependent Claims (10, 11)
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Current AssigneeSpectranetics Corporation (Koninklijke Philips N.V.)
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Original AssigneeSpectranetics Corporation (Koninklijke Philips N.V.)
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InventorsHendrick, Brandon Thomas, Grace, Kenneth P.
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Primary Examiner(s)Layno, Carl H
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Assistant Examiner(s)Pahakis, Manolis
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Application NumberUS15/911,779Publication NumberTime in Patent Office631 DaysField of SearchNoneUS Class CurrentCPC Class CodesA61B 18/24 with a catheter A61B18/26, ...A61B 18/245 for removing obstructions i...A61B 2018/0041 Removal of thrombosisA61B 2018/00577 AblationA61B 2018/00863 Fluid flowA61B 2018/206 the laser light passing alo...A61B 2018/2211 Plurality of fibresA61B 2018/2216 Braided or helically woundA61B 2018/2244 Features of optical fibre c...
