Patent ID: 6027474
Filing Date: 2000-02-22
Classification: A61M

Abstract:
A catheter device adapted for use with a conventional length guidewire, comprising:(a) an elongated, flexible shaft having a proximal section and a distal section, the shaft defining(i) an inflation lumen extending longitudinally through the shaft from an open proximal end formed at the proximal section of the shaft to an open distal end formed at the distal section of the shaft;(ii) a guidewire lumen extending longitudinally through the shaft from an open proximal end formed at the proximal section of the shaft to an open distal end formed at the distal section of the shaft;(iii) a hydraulic exchange lumen extending longitudinally through the shaft from an open proximal end formed at the shaft proximal section to a closed distal end terminating proximal the distal section of the shaft, the hydraulic exchange lumen having an outlet port proximal its closed distal end through which it is in fluid communication with the guidewire lumen;(b) a balloon member coupled to the distal section of the shaft, the balloon member defining an interior cavity in fluid communication with the distal end of the inflation lumen;(c) a flow guiding member disposed within the guidewire lumen, wherein the flow guiding member is adapted to redirect the distal flow of pressurized fluid traveling through the hydraulic exchange lumen in a proximal direction through the guidewire lumen.