Radiation delivery devices and methods of making same
AssigneeMedirad I.R.T. Ltd.
InventorHanan Keren
Life of this patent
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Abstract
A device for delivering radiation to at least one preselected site in a vascular system of a patient, includes an elongated flexible catheter tube of a diameter for insertion into the patient's vascular system, and a flexible guide wire within the catheter tube and movable along its length. The guide wire includes a proximal end to be located externally of the patient's vascular system for moving the guide wire within the catheter tube, and a rounded distal tip at the opposite end to facilitate movement of the guide wire through the catheter tube. At least one radiation-producing element is fixed to the guide wire at an intermediate location spaced from the rounded distal tip.
Claims5
A device for delivering radiation to at least one preselected site in a vascular system of a patient, comprising:
- an elongated flexible catheter tube of a diameter for insertion into the patient's vascular system;
- a flexible guide wire within said catheter tube and movable along its length, said guide wire including a proximal end to be located externally of the patient's vascular system for moving the guide wire within the catheter tube, and a rounded distal tip at the opposite end of the guide wire to facilitate its movement through the catheter tube;
- and at least one radiation-producing element fixed to said guide wire at an intermediate location thereof spaced from said rounded distal tip;
- said radiation-producing element being formed with a slot extending radially from an outer edge to its central region for receiving said flexible guide wire and for fixing the radiation-producing element to the flexible guide wire.
A device for delivering radiation to a plurality of preselected sites in a vascular system of a patient, comprising:
- an elongated flexible catheter tube of a diameter for insertion into the patient's vascular system;
- a flexible guide wire within said catheter tube and moveable along its length, said guide wire including a distal end to be located within said catheter tube, and a proximal end to be located externally of the catheter tube for moving the guide wire within the catheter tube;
- a plurality of radiation-producing elements fixed to said guide wire at the distal end thereof, each of said radiation-producing elements being of circular configuration and being formed with a radial slot for receiving the guide wire centrally thereof;
- and a plurality of non-radiation-producing spacer elements fixed to said guide wire between at least some of said radiation-producing elements for spacing said latter elements from each other along said guide wire.
Dependencies are inferred from the claim text.