Deflectable telescoping guide catheter
First Claim
Patent Images
1. A catheter, including:
- an outer guide including an outer guide lumen, a distal end, a proximal end, and a predetermined deflection location proximate the distal end;
an inner guide including an inner guide lumen, a pre-formed distal end, and a proximal end, the inner guide movable within the outer guide lumen and displaceable beyond the distal end of the outer guide; and
an actuator mechanism located at a proximal end of the catheter, the actuator mechanism changing a bend angle at the predetermined deflection location of the outer guide, and the proximal end of the inner guide accessible at the proximal end of the catheter allowing adjustable axial displacement of the pre-formed distal end of the inner guide relative to the distal end of the outer guide.
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Abstract
A catheter employs an inner guide with a pre-formed distal tip, an outer guide with a predetermined deflection location, and a proximal actuator. The inner guide can be longitudinally extended and axially rotated relative to the outer guide. The proximal actuator can adjustably change a bend angle of the predetermined deflection location. The catheter can be deployed with the inner guide retracted inside the distal end of the outer catheter. The extensible and rotatable inner catheter can be combined with the adjustable bend angle of the outer guide to provide an improved system for accessing and cannulating venous structures.
57 Citations
21 Claims
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1. A catheter, including:
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an outer guide including an outer guide lumen, a distal end, a proximal end, and a predetermined deflection location proximate the distal end;
an inner guide including an inner guide lumen, a pre-formed distal end, and a proximal end, the inner guide movable within the outer guide lumen and displaceable beyond the distal end of the outer guide; and
an actuator mechanism located at a proximal end of the catheter, the actuator mechanism changing a bend angle at the predetermined deflection location of the outer guide, and the proximal end of the inner guide accessible at the proximal end of the catheter allowing adjustable axial displacement of the pre-formed distal end of the inner guide relative to the distal end of the outer guide. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of inserting a payload into a coronary sinus of a patient'"'"'s heart, comprising:
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providing a catheter, comprising;
an outer guide including an outer guide lumen, a distal end, a proximal end, and a predetermined deflection location proximate the distal end;
an inner guide including an inner guide lumen, a pre-formed distal end, and a proximal end, the inner guide movable within the outer guide lumen and displaceable beyond the distal end of the outer guide; and
an actuator mechanism located at a proximal end of the catheter, the actuator mechanism changing a bend angle at the predetermined deflection location of the outer guide, and the proximal end of the inner guide accessible at the proximal end of the catheter allowing adjustable axial displacement of the pre-formed distal end of the inner guide relative to the distal end of the outer guide;
inserting the distal end of the catheter through a patient'"'"'s right atrium via an access vessel;
distally displacing the inner guide beyond the distal tip of the outer guide and changing the bend angle at the predetermined deflection location via the actuator mechanism to direct the pre-formed distal end of the inner guide for finding and cannulating the patient'"'"'s coronary sinus;
distally advancing the outer guide over the inner guide to seat the outer guide in the patient'"'"'s coronary sinus;
proximally retracting the inner guide to remove the inner guide from the catheter; and
advancing the payload through the proximal end of the outer guide such that the payload is inserted into the patient'"'"'s coronary sinus;
- View Dependent Claims (19)
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20. A method of inserting a payload into a coronary sinus of a patient'"'"'s heart, comprising:
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providing a catheter, comprising;
an outer guide including an outer guide lumen, a distal end, a proximal end, and a predetermined deflection location proximate the distal end;
an inner guide including an inner guide lumen, a pre-formed distal end, and a proximal end, the inner guide movable within the outer guide lumen and displaceable beyond the distal end of the outer guide; and
an actuator mechanism located at a proximal end of the catheter, the actuator mechanism changing a bend angle at the predetermined deflection location of the outer guide, and the proximal end of the inner guide accessible at the proximal end of the catheter allowing adjustable axial displacement of the pre-formed distal end of the inner guide relative to the distal end of the outer guide;
inserting the distal end of the catheter through a patient'"'"'s right atrium via an access vessel;
axially displacing the inner guide beyond the distal tip of the outer guide and changing the bend angle at the predetermined deflection location via the actuator mechanism to direct the pre-formed distal end of the inner guide for finding and cannulating the patient'"'"'s coronary sinus; and
advancing the payload through the proximal end of the inner guide such that the payload is inserted into the patient'"'"'s coronary sinus. - View Dependent Claims (21)
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Specification