Guide catheter
AssigneeMedtronic, Inc.
InventorsChristopher M. Hobot, Stanten C. Spear, James F. Kelley, Jennifer L. Braunschweig, Kiem Dang, Kenneth C. Gardeski
Life of this patent
Estimating the term…
Abstract
A guide catheter has properties that promote enhanced visibility of the guide catheter using fluoroscopic or ultrasonic imaging techniques. The tip of the guide catheter may incorporate a material that is both fluoro and echo visible. The first material also may be provided in various amounts along the length of the guide catheter. In addition, the guide catheter may incorporate a reinforcing braid that includes one or more strands of a second material that is radio-opaque. As a result, the result guide catheter achieves improved radio-opacity and echogenicity.
Claims11
A guide catheter comprising:
- an elongated sheath having proximal end, a distal tip, and an inner channel to accommodate travel of a medical component;
- a first material in the distal tip, wherein the first material is radio-opaque and echogenic;
- and
- a second material in a wall of the sheath, wherein the second material is a reinforcing braid formed within the sheath, wherein the braid includes a plurality of strands and at least one strand of the plurality of strands forming the reinforcing braid includes a radio-opaque material, and wherein jet-milled tungsten carbide particles are distributed within the polymeric material of the first material between approximately 70 to 75 percent by weight and have an average diameter approximately less than or equal to 500 nanometers.
A guide catheter comprising:
- an elongated sheath having proximal end, a distal tip, and an inner lumen sized to accommodate travel of medical components;
- and
- a first material in the distal tip, wherein the first material is radio-opaque and echogenic, and includes jet-milled tungsten carbide particles having an average diameter of less than 500 nanometers, and wherein the tungsten carbide articles are distributed within the polymeric material in the amount of approximately 70 to 75 percent by weight.
A guide catheter comprising:
- an elongated sheath having proximal end and a distal tip;
- a first material forming the distal tip, wherein the first material is formed of a polymeric material and jet-milled tungsten carbide particles;
- and
- a second material forming a wall of the sheath, wherein the second material is formed of a polymeric material and jet-milled tungsten carbide particles are distribute within a first portion of the polymeric material of the second material in an amount between approximately 40 to 75 percent by weight, wherein the jet-milled tungsten carbide particles are distributed within the polymeric material of the first material between approximately 70 to 75 percent by weight and have an average diameter approximately less than or equal to 500 nanometers.
A guide catheter comprising:
- an elongated sheath having proximal end and a distal tip;
- a first material forming the distal tip, wherein the first material is formed of a polymeric material and jet-milled tungsten carbide particles;
- and
- a second material forming a wall of the sheath, wherein the second material is formed of a polymeric material and barium sulfate particles, and wherein the jet-milled tungsten carbide particles are distributed within the polymeric material of the first material between approximately 70 to 75 percent by weight and have an average diameter approximately less than or equal to 500 nanometers.
Dependencies are inferred from the claim text.