Dual concentric balloon catheter for retrograde cardioplegia perfusion
First Claim
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1. A cardioplegia catheter for use in cardiac surgery comprising, in combination:
- an elongate flexible tube of biocompatible material having a length and a proximal end for, in use, dwelling outside the patient'"'"'s heart and a distal end for, in use, dwelling in the coronary sinus of the patient, said tube defining at least first and second lumina lengthwise there through;
a cardioplegia connector proximate the proximal end of the tube for selectively introducing cardioplegia into the first lumen;
a first expandable balloon having an exterior and an interior encompassing a portion of the tube proximate the distal end of the tube, the tube being so constructed and configured as to define a first passage from the first lumen to the exterior of the tube proximate the distal end thereof for directing cardioplegia into the coronary sinus of the patient and a second passage from the first lumen in fluid communication with the interior of the first expandable balloon for directing cardioplegia into the said first balloon for expanding the same;
a fluid pressure connector proximate the proximal end of the tube for selectively applying fluid into the second lumen of the tube; and
a second expandable balloon having an exterior and an interior encompassing a portion of the tube inside of the first expandable balloon, the tube being so constructed and configured as to define a third passage from the second lumen in fluid communication with the interior of the second balloon for applying fluid pressure from the fluid pressure connector to the interior of the second balloon for selectively inflating said balloon to a desired pressure.
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Abstract
A perfusion catheter for use in open heart surgery having inner and outer concentric balloons adjacent to the distal end of the catheter wherein the inner balloon is a cuff that may be inflated by a syringe using either air or liquid via a second lumen in the catheter, the outer balloon self-inflating when perfusion liquid flows through the catheter, and a third and lumen of the catheter to monitor the infusion pressure at the distal end of the catheter, is disclosed.
103 Citations
7 Claims
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1. A cardioplegia catheter for use in cardiac surgery comprising, in combination:
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an elongate flexible tube of biocompatible material having a length and a proximal end for, in use, dwelling outside the patient'"'"'s heart and a distal end for, in use, dwelling in the coronary sinus of the patient, said tube defining at least first and second lumina lengthwise there through; a cardioplegia connector proximate the proximal end of the tube for selectively introducing cardioplegia into the first lumen; a first expandable balloon having an exterior and an interior encompassing a portion of the tube proximate the distal end of the tube, the tube being so constructed and configured as to define a first passage from the first lumen to the exterior of the tube proximate the distal end thereof for directing cardioplegia into the coronary sinus of the patient and a second passage from the first lumen in fluid communication with the interior of the first expandable balloon for directing cardioplegia into the said first balloon for expanding the same; a fluid pressure connector proximate the proximal end of the tube for selectively applying fluid into the second lumen of the tube; and a second expandable balloon having an exterior and an interior encompassing a portion of the tube inside of the first expandable balloon, the tube being so constructed and configured as to define a third passage from the second lumen in fluid communication with the interior of the second balloon for applying fluid pressure from the fluid pressure connector to the interior of the second balloon for selectively inflating said balloon to a desired pressure. - View Dependent Claims (2)
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3. A cardioplegia catheter for use in cardiac surgery comprising, in combination:
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an elongate flexible tube of biocompatible material having a length and a proximal end for, in use, dwelling outside the patient'"'"'s heart and a distal end for, in use, dwelling in the coronary sinus of the patient, said tube defining at least first and second lumina lengthwise there through; a cardioplegia connector proximate the proximal end of the tube for selectively introducing cardioplegia into the first lumen; a first expandable balloon having an exterior and an interior encompassing a portion of the tube proximate the distal end of the tube, the tube being so constructed and configured as to define a first passage from the first lumen to the exterior of the tube proximate the distal end thereof for directing cardioplegia into the coronary sinus of the patient and a second passage from the first lumen in fluid communication with the interior of the first expandable balloon for directing cardioplegia into the said first balloon for expanding the same; a fluid pressure connector proximate the proximal end of the tube for selectively applying fluid into the second lumen of the tube; and a second expandable balloon having an exterior and an interior encompassing a portion of the tube, the tube being so constructed and configured as to define a third passage from the second lumen in fluid communication with the interior of the second balloon for applying fluid pressure from the fluid pressure connector to the interior of the second balloon for selectively inflating said balloon to a desired pressure. - View Dependent Claims (4)
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5. A multiple lumen catheter comprising a tube having a length and proximal and distal ends that defines at least first and second lumina, first and second balloons secured on said tube proximate the distal end thereof, said tube defining a fluid passage from the first lumen to the first balloon and a second fluid passage from the second lumen to the second balloon, the tube being so constructed as to define a fluid flow path proximate the distal end of the tube from only one of said lumen to the exterior of the tube for introducing fluid from the catheter into a balloon and for passing fluid from the distal end of the tube.
- 6. A multiple lumen catheter comprising a tube having a length and proximal and distal ends that defines at least first and second lumina, first and second balloons secured concentrically on said tube proximate the distal end thereof, said tube defining a fluid passage from the first lumen to the first balloon and a second fluid passage from the second lumen to the second balloon, the tube being so constructed as to define a fluid flow path proximate the distal end of the tube from only one of said lumen to the exterior of the tube for introducing fluid from the catheter into a balloon and for passing fluid from the distal end of the tube.
Specification