Scoring balloon catheter with enhanced pushability and maneuverability
AssigneeC.R. Bard, Inc.
InventorsKatherine Huffer, Mark Nicholas Wright
Life of this patent
Estimating the term…
Abstract
A device for introduction into a body vessel includes a shaft (105), a balloon (115) positioned at the distal end of the shaft (105), and at least one longitudinal scoring wire (135) to score a vascular lesion attached to the distal end of the shaft (105), disposed over the balloon (115). The shaft (105) includes a support (119), such as a wire or tube having one or more spirally cut portions (119A, 119B), which improves pushability and trackability, thereby allowing for use with an external guidewire in a “short rapid exchange” (SRX) format. The balloon (115) expands when fluid is delivered to the balloon (115) through the inflation lumen. This expansion pushes the scoring wire and guidewire against the vascular lesion.
Claims15
A balloon catheter, comprising:
- a shaft having a proximal end section, a distal end section, and a support extending from the proximal end section to the distal end section of the shaft, at least a portion of the support comprising a solid wire with spiral cut portion;
- a hub mounted to the proximal end section of the shaft;
- an inflatable balloon mounted on the distal end section of the shaft, wherein at least a portion of the support positioned within the shaft between the proximal end section and the inflatable balloon;
- and
- at least one scoring wire having a first end fixed on the shaft between a shaft distal end and the inflatable balloon, a second end connected to the proximal end section of the shaft, and an intermediate portion running alongside of the inflatable balloon;
- wherein the distal end section of the shaft includes a guidewire lumen having an inlet distal of the balloon and an outlet distal of the inflatable balloon.
A balloon catheter, comprising:
- a shaft having a proximal end section, a distal end section, and a support extending from the proximal end section to the distal end section, at least a portion of the support comprising a solid wire with a spiral cut portion;
- a hub mounted to the proximal end section of the shaft;
- an inflatable balloon mounted on the distal end section of the shaft, the distal end section of the shaft including a guidewire lumen having an inlet distal of the balloon and an outlet distal of the inflatable balloon;
- a guidewire adapted to pass through a lumen in a distal tip of the shaft;
- and
- at least one scoring wire having a first end fixed on the shaft between a shaft distal end and the inflatable balloon, a second end connected to the proximal end section of the shaft, and an intermediate portion running alongside of the inflatable balloon.
A balloon catheter, comprising:
- a shaft having a proximal end section, a distal end section, and a solid support wire extending at least partially within the shaft from the proximal end section to the distal end section, at least a portion of the solid support wire comprising a spiral cut portion;
- a hub mounted to the proximal end section of the shaft;
- an inflatable balloon mounted on the distal end section of the shaft;
- and
- a guidewire lumen having an inlet distal of the inflatable balloon and an outlet distal of the inflatable balloon.
Dependencies are inferred from the claim text.