Anti-recoil catheter
First Claim
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1. A method for performing a medical procedure comprising:
- providing a catheter having a proximal end and a distal end having a size in the range of approximately 0 to 4 French, said distal end having an opening;
introducing said catheter into a patient;
introducing a fluid into the patient at a flow rate in the range of approximately 0 to 40 ml/sec without failure to said catheter; and
balancing forces acting on said catheter resulting from the introduction of fluid flow by variably restricting the fluid flow through the opening at the distal end of said catheter according to said flow rate and by directing fluid in a retrograde direction out of a plurality of openings in a wall of said catheter.
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Abstract
A design is disclosed for a catheter assembly used during interventional and/or diagnostic procedures. The catheter includes a plurality of openings that allow for controlled fluid flow as the fluid exits the lumen of the catheter and can be inserted into the vascular system over a guidewire. As a result, the openings balance the fluid forces and, thereby, stabilize the distal tip to accommodate a wide range of injection parameters. The particular design of the catheter assembly of the present invention also reduces and/or eliminates recoil of the catheter tip during high volume injections, such as those associated with coronary or ventricular angiography.
111 Citations
7 Claims
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1. A method for performing a medical procedure comprising:
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providing a catheter having a proximal end and a distal end having a size in the range of approximately 0 to 4 French, said distal end having an opening;
introducing said catheter into a patient;
introducing a fluid into the patient at a flow rate in the range of approximately 0 to 40 ml/sec without failure to said catheter; and
balancing forces acting on said catheter resulting from the introduction of fluid flow by variably restricting the fluid flow through the opening at the distal end of said catheter according to said flow rate and by directing fluid in a retrograde direction out of a plurality of openings in a wall of said catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification