Catheter with tapering surfaces
AssigneeTyco Healthcare Group LP
InventorManish Deshpande
Life of this patent
Estimating the term…
Abstract
A catheter has an elongated tubular body and a septum. The elongated tubular body defines a longitudinal axis and includes a first wall defining a first lumen and a second wall defining a second lumen. The first lumen and the second lumen communicate with first and second distal openings, respectively. The septum separates the first and second lumens. One or both of the first and second walls includes a side opening. The side opening is fluid communication with one of the first and second lumens. The side opening has an external aperture and an internal aperture. The internal aperture is smaller in dimension than the external aperture.
Claims19
A catheter, comprising:
- an elongated tubular body defining a longitudinal axis, the elongated tubular body including a first wall defining a first lumen and a second wall defining a second lumen, the first lumen and the second lumen communicating with first and second distal openings, respectively;
- and
- a septum separating the first and second lumens;
- at least one of the first and second walls defining a side opening in fluid communication with one of the first and second lumens, the side opening having an external aperture and an internal aperture smaller in dimension than the external aperture.
The catheter of 3, wherein the side opening is substantially frustoconical in shape.
A catheter including an elongated tubular body defining a longitudinal axis, the elongated tubular body, comprising:
- a first wall defining a first internal surface and a first external surface, the first internal surface defining a first lumen extending to a first distal opening, the first internal surface defining a first distal flow portion that tapers proximally from the first distal opening toward the longitudinal axis of the elongated tubular body;
- a second wall defining a second internal surface and a second external surface, the second internal surface defining a second lumen extending to a second distal opening, the second internal surface defining a second distal flow portion that tapers proximally from the second distal opening toward the longitudinal axis of the elongated tubular body;
- a side opening defined each of the first and second walls, the side openings being disposed proximal of the first and second distal openings;
- and
- a septum separating the first and second lumens;
- wherein the first and second distal flow portions of the first and second lumens have a dimension which increases towards a distal end of the catheter such that the resistance to fluid flow into the catheter is increased through the distal openings and is reduced from the distal openings.
Dependencies are inferred from the claim text.