Angioplasty cutting device and method for treating a stenotic lesion in a body vessel
First Claim
Patent Images
1. An angioplasty cutting device for balloon angioplasty of a stenotic lesion on a vessel wall in a body vessel, the device comprising:
- a balloon catheter having a body portion and an expandable balloon attached to the body portion for angioplasty at the stenotic lesion;
a cutter comprising;
a distal collar,a plurality of struts with the distal collar and proximally extending therefrom, the plurality of struts having a collapsed configuration for delivery or retrieval and an expanded configuration for cutting the stenotic lesion, the plurality of struts defining a cutting body configured to be disposed at the stenotic lesion and to be more radially expandable than the distal collar to engage the stenotic lesion for dilatation of the body vessel during angioplasty, the cutting body extending along and engaging the stenotic lesion generally longitudinally and non-circumferentially, the plurality of struts extending parallel to the longitudinal axis in a collapsed configuration, each strut configured to move along a radial plane of fracture extending from the longitudinal axis to the vessel wall as each struts moves from the collapsed configuration to the expanded configuration; and
a proximal collar, the plurality of struts being with the proximal collar, at least one of the distal collar and the proximal collar having a slot formed therethrough defining a C-shaped configuration that is configured to be fastened about the expandable balloon; and
wherein the angioplasty cutting device is removed from the body vessel after engaging the stenotic lesion.
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Abstract
An integrally formed angioplasty cutting device for balloon angioplasty of a stenotic lesion in a body vessel. The device comprises a distal collar and a proximal collar. The device further comprises at least one strut integrally formed with the distal collar and the proximal collar. At least one of the collars has a slot formed therethrough defining a C-shaped configuration. The strut is configured to be disposed at the stenotic lesion to engage the stenotic lesion for dilatation of the body vessel during angioplasty.
92 Citations
18 Claims
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1. An angioplasty cutting device for balloon angioplasty of a stenotic lesion on a vessel wall in a body vessel, the device comprising:
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a balloon catheter having a body portion and an expandable balloon attached to the body portion for angioplasty at the stenotic lesion; a cutter comprising; a distal collar, a plurality of struts with the distal collar and proximally extending therefrom, the plurality of struts having a collapsed configuration for delivery or retrieval and an expanded configuration for cutting the stenotic lesion, the plurality of struts defining a cutting body configured to be disposed at the stenotic lesion and to be more radially expandable than the distal collar to engage the stenotic lesion for dilatation of the body vessel during angioplasty, the cutting body extending along and engaging the stenotic lesion generally longitudinally and non-circumferentially, the plurality of struts extending parallel to the longitudinal axis in a collapsed configuration, each strut configured to move along a radial plane of fracture extending from the longitudinal axis to the vessel wall as each struts moves from the collapsed configuration to the expanded configuration; and a proximal collar, the plurality of struts being with the proximal collar, at least one of the distal collar and the proximal collar having a slot formed therethrough defining a C-shaped configuration that is configured to be fastened about the expandable balloon; and wherein the angioplasty cutting device is removed from the body vessel after engaging the stenotic lesion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 14, 15, 17, 18)
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9. An angioplasty cutting apparatus for treatment of a stenotic lesion on a vessel wall in a body vessel, the device comprising:
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a balloon catheter having a tubular body portion and an expandable balloon attached to and in fluid communication with the tubular body portion for angioplasty at the stenotic lesion, the expandable balloon having distal and proximal portions; and a one-piece angioplasty cutting device coaxially adaptable about the expandable balloon for angioplasty of the stenotic lesion in the body vessel, the device comprising; a distal collar configured to be disposed adjacent the distal end of the balloon relative to the device; a cutting body including a plurality of struts, the plurality of struts having a collapsed configuration for delivery or retrieval and an expanded configuration for cutting the stenotic lesion, each strut having a first portion and a second portion, each first portion being with the distal collar and extending longitudinally therefrom to the second portion, the cutting body being more radially expandable than the distal collar with the balloon to engage the stenotic lesion for dilatation of the body vessel during angioplasty, the cutting body extending along and engaging the stenotic lesion generally longitudinally and non-circumferentially, the plurality of struts extending parallel to the longitudinal axis in a collapsed configuration, each strut configured to move along a radial plane of fracture extending from the longitudinal axis to the vessel wall as each strut moves from the collapsed configuration to the expanded configuration; and a proximal collar configured to be disposed adjacent the proximal end of the balloon relative to the device, each second portion being with the proximal collar, and at least one of the distal collar and the proximal collar has a slot formed therethrough defining a C-shaped configuration that is configured to be fastened about the expandable balloon, the at least one of the collars attaching to the balloon catheter at one of the distal portion and proximal portion thereof; and wherein the angioplasty cutting apparatus is removed from the body vessel after engaging the stenotic lesion. - View Dependent Claims (10, 11, 12, 13, 16)
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Specification