Radiation dose delivery catheter with reinforcing mandrel
AssigneeAdvanced Cardiovascular Systems, Inc.
InventorGary Schneiderman
Life of this patent
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Abstract
The invention is directed to a rapid exchange type intravascular catheter suitable for maintaining patency of a body lumen for a period of time sufficient to permit delivery of a radiation source to the body lumen. The catheter utilizes a reinforcing mandrel to improve the pushability and strength of the catheter as it tracks along a guide wire, and permits blood flow through an inflatable member while radiation therapy is being provided.
Claims7
An intravascular catheter for delivering and maintaining a radioactive dose in a body lumen, comprising:
- an elongated catheter body having a proximal end and a distal end;
- an inflation lumen extending within the elongated catheter body to a location on a distal portion of the elongated body;
- an inflatable member disposed on the distal portion of the elongated catheter body and having an interior in fluid communication with the inflation lumen;
- a guide wire lumen extending through a portion of the elongated catheter body for receiving a guide wire;
- a first guide wire port in the distal end of the catheter body in communication with the guide wire lumen and a second guide wire port in the distal portion of the catheter body which is spaced a short distance from the distal end of the catheter body and a substantial distance from the proximal end of the catheter body and which is in communication with the guide wire lumen;
- a blind lumen extending within the elongated catheter body from the proximal end of the catheter body and terminating at a position near the distal end of the inflatable member, the blind lumen adapted to receive a radiation source wire;
- and
- a reinforcing mandrel disposed within the elongated catheter body for increasing the pushability and stiffness of the catheter body as it is tracked along a guide wire.
A catheter assembly for delivering and maintaining a radioactive dose in a body lumen comprising:
- an elongated catheter body having a proximal end and a distal end;
- an inflation lumen extending within the elongated catheter body to a location on a distal portion of the elongated body;
- an inflatable member disposed on the distal portion of the elongated catheter body and having an interior in fluid communication with the inflation lumen, the inflatable member having a plurality of spaced apart inflatable sections;
- a guidewire lumen extending through a portion of the elongated catheter body for receiving a guidewire;
- a first guidewire port in the distal end of the catheter body in communication with the guidewire lumen and a second guidewire port in the distal portion of the catheter body which is spaced a short distance from the distal end of the catheter body and a substantial distance from the proximal end of the catheter body and which is in communication with the guidewire lumen;
- a blind lumen extending within the elongated catheter body from the proximal end of the catheter body and terminating at a position near the distal end of the inflatable member, the blind lumen adapted to receive a radiation source wire;
- and
- a reinforcing mandrel disposed within the elongated catheter body for increasing the pushability and stiffness of the catheter body as it is tracked along a guidewire.
Dependencies are inferred from the claim text.