Transluminal angioplasty devices and methods of use
First Claim
1. A percutaneous transluminal angioplasty device, comprising:
- a multi-lumen catheter having a proximal portion and a distal portion, the catheter defining a first lumen, a second lumen, and a third lumen, each lumen extending through at least a portion of the catheter;
a filter disposed adjacent the distal end of the catheter and being movable between unexpanded and expanded configuration, the filter comprising a filter frame formed of a shape memory material having a memory of the unexpanded configuration;
a filter activation wire disposed within the first lumen, wherein a distal end of the filter activation wire is coupled to the filter frame, and wherein tensioning the filter activation wire urges the filter frame in an axial direction from an unexpanded configuration to an expanded configuration;
an expandable balloon disposed on the catheter at a location proximal to the filter;
a self-expanding stent extending over at least a portion of the expandable balloon; and
a movable sheath extending over at least a portion of the self-expanding stent;
a sheath wire coupled to the movable sheath, the sheath wire extending through one of the lumens defined by the catheter, wherein movement of the sheath wire translates the sheath axially; and
a handle coupled to a proximal end of the catheter, wherein the handle comprises a first actuation knob coupled to the filter activation wire and being manipulatable to expand and contract the filter via the filter activation wire, and wherein the handle further comprises a second actuation knob coupled to the sheath wire and being manipulatable to axially move the sheath via the sheath wire.
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Accused Products
Abstract
A percutaneous transluminal angioplasty device includes a catheter defining one or more lumens. A filter is coupled to the catheter adjacent a distal end of the catheter, and the filter is movable between an unexpanded and expanded configuration via a filter activation wire that extends through a lumen. An expandable balloon is coupled to the catheter proximally of the filter, and a stent is disposed over at least a portion of the balloon. To deploy the stent to a target site, the filter is first moved into its expanded position via the filter activation wire. Then, the stent is expanded, and the balloon is inflated to expand the stent further radially. The balloon is then deflated, the filter is contracted, and the catheter, balloon, and filter are removed from the body.
26 Citations
16 Claims
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1. A percutaneous transluminal angioplasty device, comprising:
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a multi-lumen catheter having a proximal portion and a distal portion, the catheter defining a first lumen, a second lumen, and a third lumen, each lumen extending through at least a portion of the catheter; a filter disposed adjacent the distal end of the catheter and being movable between unexpanded and expanded configuration, the filter comprising a filter frame formed of a shape memory material having a memory of the unexpanded configuration; a filter activation wire disposed within the first lumen, wherein a distal end of the filter activation wire is coupled to the filter frame, and wherein tensioning the filter activation wire urges the filter frame in an axial direction from an unexpanded configuration to an expanded configuration; an expandable balloon disposed on the catheter at a location proximal to the filter; a self-expanding stent extending over at least a portion of the expandable balloon; and a movable sheath extending over at least a portion of the self-expanding stent; a sheath wire coupled to the movable sheath, the sheath wire extending through one of the lumens defined by the catheter, wherein movement of the sheath wire translates the sheath axially; and a handle coupled to a proximal end of the catheter, wherein the handle comprises a first actuation knob coupled to the filter activation wire and being manipulatable to expand and contract the filter via the filter activation wire, and wherein the handle further comprises a second actuation knob coupled to the sheath wire and being manipulatable to axially move the sheath via the sheath wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification