Atherectomy catheter and related components
First Claim
1. An intravascular imaging catheter assembly comprising:
- a catheter body having a proximal portion and a distal portion, the catheter body defining a drive shaft lumen and a guide wire lumen;
a drive shaft located in said drive shaft lumen, the drive shaft axially movable within the drive shaft lumen;
a piezoelectric transducer located in the distal portion proximate to a distal end of the drive shaft;
at least one lead connected to the piezoelectric transducer and extending through to a proximal end of the catheter body;
a channel for receiving a guide wire, the channel extending alongside the catheter for at least a portion thereof and disposed proximally of the guide wire lumen;
a guide wire removably locatable in the catheter with a proximal portion of the guide wire locatable in the channel and a distal portion of the guide wire locatable in the guide wire lumen.
1 Assignment
0 Petitions
Accused Products
Abstract
An atherectomy catheter includes a catheter shaft having three lumens. The central lumen supports a central wire on which is mounted a shell-shaped cutter. The cutter is exposed to the exterior of the shaft via a cutting window, and the cutter is mounted in a housing integral with the catheter shaft. An upper lumen receives material severed by the cutter as severed material is pushed proximally by the cutter during a cutting stroke. The lower lumen is used to inflate a balloon situated opposite the cutting window. The cutter is arranged to cut when pulled proximally, and is oscillated through a short stroke while the user moves the cutter across the cutting window. A guide wire extends laterally outside of the catheter shaft to a point past the cutter, where it enters the central lumen distally of the central wire.
184 Citations
17 Claims
-
1. An intravascular imaging catheter assembly comprising:
-
a catheter body having a proximal portion and a distal portion, the catheter body defining a drive shaft lumen and a guide wire lumen; a drive shaft located in said drive shaft lumen, the drive shaft axially movable within the drive shaft lumen; a piezoelectric transducer located in the distal portion proximate to a distal end of the drive shaft; at least one lead connected to the piezoelectric transducer and extending through to a proximal end of the catheter body; a channel for receiving a guide wire, the channel extending alongside the catheter for at least a portion thereof and disposed proximally of the guide wire lumen; a guide wire removably locatable in the catheter with a proximal portion of the guide wire locatable in the channel and a distal portion of the guide wire locatable in the guide wire lumen.
-
-
2. An intravascular catheter assembly comprising:
-
a catheter body, a lumen extending through the catheter body, the lumen having a proximal portion, a distal portion and a distal lumen opening; an elongate member located in said lumen, said elongate member extending to the proximal portion of the catheter body; a channel for receiving a guide wire, the channel extending alongside the catheter for at least a portion thereof; a passageway between a distal end of the channel and the distal portion of the lumen; and a guide wire locatable in the catheter with a proximal portion of the guide wire located in the channel and a distal portion of the guide wire located in the distal portion of the lumen. - View Dependent Claims (3)
-
-
4. An intravascular catheter assembly for treatment of occlusive diseases comprising:
-
a catheter body having a lumen extending therethrough and a distal opening; a distal member for treating occlusive disease, the distal member operably to impart reciprocating oscillating movement; a drive shaft extending through the lumen and connected to the distal member; a connection member located at the proximal end of the drive shaft for imparting reciprocating oscillating movement to the drive shaft; a channel disposed proximally of the distal opening and extending alongside of a portion of the catheter; and
a guide wire which can be slidably received in said catheter, such that said guide wire extends through the channel and the distal opening. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
-
Specification