Cardioplegia catheter with elongated cuff
First Claim
1. A catheter for supplying liquid to the coronary sinus in a perfusion procedure comprising;
- a tubular catheter body having an interior lumen, a proximal end, and a distal end; and
retention means affixed to the catheter body adjacent to the distal end of the catheter, the retention means comprising a cuff having an enclosed body with a proximal end and a distal end and a central section disposed between the proximal and distal ends, the proximal and distal ends being mounted to the catheter body;
the central section being elongated sufficiently to occlude the left coronary vein when the cuff is inserted into the coronary sinus and the proximal end of the cuff is positioned adjacent the opening of the coronary sinus and inflated to retain the cuff therein.
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Accused Products
Abstract
A catheter for supplying liquid to the coronary sinus in a perfusion procedure comprising a tubular catheter body having an interior lumen, a proximal end, and a distal end; and an inflatable cuff (balloon) adjacent the distal end of the catheter. The cuff has a proximal end and a distal end, each of which encircle the catheter body and hermetically seal thereto. The cuff further comprises an elongated central section having a length of at least 1 inch. When the inflated cuff is positioned a sufficient distance into the coronary sinus to firmly retain the cuff therein, it blocks the left coronary vein where it meets the coronary sinus. Further, the cuff can comprise end panels defined between the central section and the proximal and distal cuff ends. The end panels have a shape which allows for flexure between the central section and the cuffs proximal and distal ends.
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Citations
27 Claims
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1. A catheter for supplying liquid to the coronary sinus in a perfusion procedure comprising;
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a tubular catheter body having an interior lumen, a proximal end, and a distal end; and retention means affixed to the catheter body adjacent to the distal end of the catheter, the retention means comprising a cuff having an enclosed body with a proximal end and a distal end and a central section disposed between the proximal and distal ends, the proximal and distal ends being mounted to the catheter body; the central section being elongated sufficiently to occlude the left coronary vein when the cuff is inserted into the coronary sinus and the proximal end of the cuff is positioned adjacent the opening of the coronary sinus and inflated to retain the cuff therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for attaching a cuff to a catheter body having a distal end, a proximal end, an inflation lumen and an infusion lumen, the inflation lumen terminating in an outlet thereof formed in the catheter body proximally of the distal end thereof, and the cuff comprising a tubular section of elastic material, the method comprising the steps of:
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coaxially receiving the catheter body within the tubular section of elastic material with the outlet of the inflation lumen disposed within the tubular section; while the tubular section is in the relaxed state, adhering one end portion of the tubular section of elastic material to the catheter body to form a hermetic seal between the end portion and the catheter body; placing the tubular section of elastic material in a relaxed state in the axial direction whereby it is neither under tension nor compression in the axial direction; and while the tubular section is in the relaxed state, adhering an end portion opposite said one end portion of the tubular section to the catheter body to form a hermetic seal between said opposite end section and the catheter body; whereby the cuff is in a relaxed condition in the axial direction when deflated and is flexible in the axial direction when inflated by the introduction of a fluid between the cuff and the catheter body by way of the inflation lumen outlet. - View Dependent Claims (21, 22)
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23. A method for the retrograde administration of a cardioplegic solution into the coronary sinus, comprising the steps of:
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providing a catheter comprising a tubular catheter body having a proximal end, a distal end, and an interior lumen having an outlet proximate the distal end of the catheter, and an inflatable cuff disposed adjacent to the distal end of the catheter proximally of the outlet, the cuff having a proximal end and a distal end, the proximal and distal ends of the cuff encircling the catheter body in hermetically sealing relationship therewith, the cuff including an elongated central section between the ends thereof; inserting the distal end of the catheter through a small incision in the right atrium of the heart; manipulating the catheter to introduce the cuff into the coronary sinus and dispose it therewithin with the proximal end of the cuff being positioned adjacent to the outlet of the left coronary vein; inflating the cuff until it has been expanded into contact with the wall of the coronary sinus to firmly engage the cuff within the coronary sinus and form a seal therewith, and to occlude the left coronary vein; and injecting cardioplegic solution into the coronary sinus by way of the outlet; whereby the occlusion of the left coronary vein prevents cardioplegic solution from leaking from the coronary sinus proximally of the cuff. - View Dependent Claims (24, 25, 26, 27)
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Specification