Catheter with atraumatic drug delivery tip
AssigneeTarget Therapeutics, Inc.
InventorsU. Hiram Chee, Edward R. LeMoure
Life of this patent
Estimating the term…
Abstract
The catheter with atraumatic drug delivery tip can be sued to access remote tortuous blood vessels and to deliver defined doses of medication over a desired length of the accesses vessel. The guidewire of the catheter helps guiding the catheter to a desired location and can be used to control release of medication in axial as well as in radial direction inside the vessel. The catheter is designed with sections of different flexibility.
Claims17
A catheter comprising
- an elongated tubular body having a proximal end section, a main section and a distal end section;
- and a port in the proximal end section for supplying medication into said catheter;
- said distal end section having a plurality of radial holes of different diameters for radially ejecting said medication, and a tip located distally in said distal end section and including an axial hole for axially ejecting medication,
- said radial holes being spirally arranged in order of their diameter, with the larger diameter holes being located towards said tip of said distal end section.
A catheter device for dispensing medication comprising a catheter device having an elongated tubular body including a main section, a proximal end section and distal end section, a port connected to the proximal end section of said catheter device for receiving said medication to be dispensed through said distal end section;
- said distal end section including a plurality of radial holes of different diameters for radially ejecting said medication, and a tip located distal by in said distal end section and having an axial hole for axially ejecting medication;
- a guidewire having a first end section extending beyond said proximal end of said catheter device, a center section extending along the length and inside of said catheter device, and a second end section extending through said axial hole and beyond said tip of said distal end section;
- means for supplying medication into said catheter device, and means for moving said guidewire in said catheter device;
- said radial holes being spirally arranged in order of their diameter, with the larger diameter holes being located towards said tip of said distal end section.
A catheter device for dispensing medication comprising a catheter device having an elongated tubular body including a main section, a proximal end section and a distal end section, a port connected to said proximal end section for receiving said medication;
- said distal end section including a plurality of radial holes of different diameters for radially ejecting said medication, and
- a tip located distally in said distal end section and including a valve seat having an axial hole for axially ejection said medication,
- said radial holes being spirally arranged in order of their diameter, with the larger diameter holes being located towards said tip of said distal end section;
- a guidewire having a first end section extending beyond said proximal end section of said catheter device, a center section extending along the length and inside of said catheter device, and a second end section extending through said axial hole and beyond said tip of said distal end section;
- and means for moving said guidewire in said catheter device.
A catheter device for dispensing medication comprising a catheter device having an elongated tubular body including a main section, a proximal end section and a distal end section;
- a tip having an axial hole for axially dispensing medication, said tip located distally in said distal end section, and
- said distal end section of said catheter device including
- a plurality of radial holes of different diameters for radially dispensing medication, said radial holes being spirally arranged in order of their diameter, with the larger diameter holes being located towards said tip of said distal end section;
- a guidewire having first end section extending beyond said proximal end of said catheter device, a center section extending along the length of said catheter device, and a second end section extending through said axial hole and beyond said tip of said distal end section;
- means for feeding said first end section and said center section of said guidewire into said catheter device;
- and means for supplying medication into said catheter device;
- said guidewire including an enlarged diameter body for controlling dispensation of medication through said radial holes including
- said body having a diameter slightly smaller than the inner diameter of said distal end section of said catheter device;
- said body being adapted to move inside said distal end section of said catheter device section from said tip towards said main section upon advancement or retraction at said first end of said guidewire, thereby reducing or increasing the number of radial holes for dispensation of medication.
A catheter device for dispensing medication comprising an elongated tubular body having a main section, a distal end section and a plurality of intermediate sections;
- and means for supplying medication into said catheter device;
- said distal end section having a plurality of radial holes of different diameters for radially ejecting medication, and a tip located dismally in said distal end section and including an axial hole for axially ejecting medication,
- said radial holes being spirally arranged in order of their diameter, with the larger diameter holes being located towards said tip of said distal end section each one of said plurality of intermediate sections having a different characteristic flexibility.
Dependencies are inferred from the claim text.