Balloon dilation catheter having transition from coaxial lumens to non-coaxial multiple lumens
AssigneeBard Peripheral Vascular, Inc.
InventorLanny R. Pepper
Life of this patent
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Abstract
A shaft for a balloon dilation catheter comprises a proximal portion wherein a guidewire tubular member is disposed coaxially within an outer tubular member, a shaft transitional portion, wherein the guidewire member is disposed within the outer member, with at least one distal tubular member not present in the proximal portion, a shaft distal portion, wherein the guidewire member and the distal members are disposed side-by-side and encased within a distal body, and fluid-tight barrier within a proximal lumen blocking the flow of fluid in the proximal lumen, but allowing the proximal lumen to remain in fluid communication with a distal lumens.
Claims20
A catheter comprising:
- an elongated catheter shaft with a proximal portion and a distal end, said catheter shaft including a first lumen and a second lumen each extending through the proximal portion and the distal end of the catheter shaft;
- and
- a balloon distal to the distal end of the catheter shaft;
- wherein the first lumen is positioned within the second lumen in the proximal portion of the catheter shaft, and the first lumen is positioned external to the second lumen at the distal end of the catheter shaft;
- wherein the second lumen includes multiple branches at the distal end of the catheter shaft;
- and
- wherein the catheter shaft includes a circular cross-section from the proximal portion to the distal end.
A catheter comprising:
- an elongated catheter shaft with a proximal portion and a distal end;
- a first tubular member defining a first lumen extending from the proximal portion to the distal end of the catheter shaft;
- a second tubular member in the proximal portion of the catheter shaft at least partially defining a second lumen;
- and
- a plurality of third tubular members extending to the distal end of the catheter shaft and at least partially defining the second lumen;
- wherein the first tubular member is positioned within the second lumen in the proximal portion of the catheter shaft and external to the second lumen at the distal end of the catheter shaft.
A catheter shaft with a proximal portion and a distal end, said catheter shaft for use in inflating a balloon distal to the distal end of the catheter shaft, the catheter shaft comprising:
- a guidewire tube defining a guidewire lumen extending from the proximal portion to the distal end;
- inflation tubing extending from the proximal portion to the distal end;
- and
- an elongated outer tube housing the guidewire tube and the inflation tubing;
- wherein the guidewire tube transitions from within the inflation tubing in the proximal portion of the catheter shaft to a position external to the inflation tubing at the distal end of the catheter shaft;
- and
- wherein the inflation tubing transitions from a single lumen configuration in the proximal portion to a multiple branch configuration at the distal end.
Dependencies are inferred from the claim text.