Percutaneous catheter and method of using percutaneous catheter
AssigneeTerumo Kabushiki Kaisha
InventorKenji Yokoyama
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Abstract
A percutaneous catheter is disclosed through which blood passes. The percutaneous catheter having a catheter tube including a first tube and a second tube, the second tube being in fluid communication with the first tube, the first tube having an inner diameter greater than an inner diameter of the second tube, and wherein the first tube is more flexible than the second tube.
Claims19
A percutaneous catheter, comprising:
- a catheter tube that includes a first tube and a second tube, the second tube configured to be in fluid communication with the first tube;
- wherein the first tube has an inner diameter, the inner diameter of the first tube being greater than an inner diameter of the second tube, and wherein the first tube is more flexible than the second tube;
- a distal tip gradually reduced in diameter toward a distal side, the distal tip configured to be fixed to a distal end of the first tube;
- a connector having at least one side hole, the connector configured to connect a proximal end of the first tube to a distal end of the second tube;
- and
- wherein the distal tip is provided with a blood removing hole and a flat butting portion configured to receive a distal portion of a dilator in a planar manner.
A percutaneous catheter, comprising:
- a catheter tube that includes a first reinforced tube and a second reinforced tube, the second reinforced tube configured to be in fluid communication with the first reinforced tube, and wherein the first reinforced tube has an inner diameter, the inner diameter of the first reinforced tube being greater than an inner diameter of the second reinforced tube, and wherein the first reinforced tube is more flexible than the second reinforced tube;
- a distal tip gradually reduced in diameter toward a distal side, the distal tip configured to be fixed to a distal end of the first tube;
- a connector having at least one side hole, the connector configured to connect a proximal end of the first tube to a distal end of the second tube;
- and
- wherein the distal tip is provided with a blood removing hole and a flat butting portion configured to receive a distal portion of a dilator in a planar manner.
A method of using a percutaneous catheter through which blood passes, the percutaneous catheter being provided with a catheter tube that includes a first tube and a second tube configured to be in fluid communication with the first tube, the first tube having an inner diameter greater than an inner diameter of the second tube and the first tube being more flexible than the second tube, the method comprising:
- inserting a dilator into a lumen of the catheter tube, the dilator configured to cause the first tube to expand in an axial direction, and causing an outer diameter of the first tube to be in smaller than the outer diameter without the dilator;
- and
- advancing the percutaneous catheter with the dilator over a guide wire, the guide wire having been previously inserted into a patient to a catheter insertion site.
Dependencies are inferred from the claim text.