Retrograde coronary sinus catheter
First Claim
Patent Images
1. A coronary sinus catheter for the retrograde infusion of cardioplegia solution into the coronary sinus of a patient'"'"'s heart, the catheter comprising:
- a flexible, elongate catheter tube having proximal and distal ends and an outer diameter, and including at least an infusion lumen extending longitudinally through the tube, at least one infusion lumen outlet generally adjacent the distal end of the catheter tube, and means adjacent the proximal end of the catheter tube for connecting a source of cardioplegia solution to the catheter; and
an inflatable balloon on the catheter tube generally adjacent the distal end of the catheter tube proximally of the infusion lumen outlet, the inflatable balloon being expandable as the balloon is inflated from an un-inflated diameter, approximately equal to the outer diameter of the catheter tube for introducing the catheter into the coronary sinus, to an inflated diameter, substantially greater than the outer diameter of the catheter tube for securing the distal end of the catheter in the coronary sinus;
the inflatable balloon having a plurality of outwardly-facing, spaced-apart, segmented, annular ribs or lands for frictionally engaging the coronary sinus, each segmented annular rib or land comprising a plurality of solid, raised, elongate rib portions separated by non-raised portions extending annularly around the periphery of the balloon in alternating fashion, the non-raised portions preferentially stretching in comparison to the raised rib portions as the balloon is inflated to its inflated diameter, the balloon, including the ribs or lands, being integrally molded of generally uniform elastomeric material, each raised rib portion having a non-conical upper surface sloping smoothly and gradually toward the surface of the balloon.
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Accused Products
Abstract
A coronary sinus catheter assembly for the retrograde infusion of cardioplegia solutions into the coronary sinus. The assembly comprises a catheter having a balloon with a plurality of segmented annular ribs, and a stylet having a relatively stiff proximal sleeve and a relatively flexible malleable wire extending distally from the sleeve.
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Citations
45 Claims
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1. A coronary sinus catheter for the retrograde infusion of cardioplegia solution into the coronary sinus of a patient'"'"'s heart, the catheter comprising:
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a flexible, elongate catheter tube having proximal and distal ends and an outer diameter, and including at least an infusion lumen extending longitudinally through the tube, at least one infusion lumen outlet generally adjacent the distal end of the catheter tube, and means adjacent the proximal end of the catheter tube for connecting a source of cardioplegia solution to the catheter; and an inflatable balloon on the catheter tube generally adjacent the distal end of the catheter tube proximally of the infusion lumen outlet, the inflatable balloon being expandable as the balloon is inflated from an un-inflated diameter, approximately equal to the outer diameter of the catheter tube for introducing the catheter into the coronary sinus, to an inflated diameter, substantially greater than the outer diameter of the catheter tube for securing the distal end of the catheter in the coronary sinus; the inflatable balloon having a plurality of outwardly-facing, spaced-apart, segmented, annular ribs or lands for frictionally engaging the coronary sinus, each segmented annular rib or land comprising a plurality of solid, raised, elongate rib portions separated by non-raised portions extending annularly around the periphery of the balloon in alternating fashion, the non-raised portions preferentially stretching in comparison to the raised rib portions as the balloon is inflated to its inflated diameter, the balloon, including the ribs or lands, being integrally molded of generally uniform elastomeric material, each raised rib portion having a non-conical upper surface sloping smoothly and gradually toward the surface of the balloon.
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2. A retrograde coronary sinus perfusion cannula that comprises:
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an elongate flexible tube with a central infusion lumen and an integral side lumen for pressure monitoring, the tube having a distal end and a proximal end; an inflatable cuff that encircles the tube adjacent the distal end of the tube, the inflatable cuff being formed of elastomeric material and having a plurality of outwardly-facing, spaced-apart, segmented, annular ribs or lands integrally molded with the cuff for frictionally engaging the coronary sinus, each segmented annular rib or land comprising a plurality of solid raised rib portions separated by non-raised portions extending annularly around the periphery of the cuff in alternating fashion, each raised rib portion having a non-conical upper surface sloping smoothly and gradually toward the surface of the cuff; and an introducer stylet removably received into the proximal end of the central lumen, the introducer stylet having a handle, a relatively rigid proximal portion adjacent the handle, and a relatively flexible shape-retaining distal portion remote from the handle. - View Dependent Claims (3)
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4. A retrograde coronary sinus perfusion cannula that comprises:
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an elongate flexible tube with a central infusion lumen and an integral side lumen for pressure monitoring, the tube having a distal end and a proximal end; an inflatable cuff that encircles the tube adjacent the distal end of the tube, the inflatable cuff being formed of elastomeric material and having a plurality of outwardly-facing, spaced-apart, segmented, annular ribs or lands integrally molded with the cuff for frictionally engaging the coronary sinus, each segmented annular rib or land comprising a plurality of solid raised rib portions separated by non-raised portions extending annularly around the periphery of the cuff in alternating fashion; and an introducer stylet removably received into the proximal end of the central lumen, the introducer stylet having a handle, a relatively rigid proximal portion adjacent the handle, and a relatively flexible shape-retaining distal portion remote from the handle; the direction longitudinally along the catheter tube from its proximal end toward its distal end constituting the forward direction, and the raised rib portions having a generally asymmetrical profile along the longitudinal direction of the cannula, the raised rib portions having an upper surface sloping smoothly and gradually forwardly to the surface of the cuff, and a back surface extending from the upper surface more steeply to the surface of the cuff than the upper surface slopes to the surface of the cuff. - View Dependent Claims (5)
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6. A coronary sinus catheter assembly for the retrograde infusion of cardioplegia solution into the coronary sinus of a patient'"'"'s heart, the catheter assembly comprising:
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a catheter comprising; a flexible, elongate catheter tube having proximal and distal ends and an outer diameter, and including at least an infusion lumen extending longitudinally through the tube, at least one infusion lumen outlet generally adjacent the distal end of the catheter tube, and means adjacent the proximal end of the catheter tube for connecting a source of cardioplegia solution to the catheter; and an inflatable balloon on the catheter tube generally adjacent the distal end of the catheter tube proximally of the infusion lumen outlet, the inflatable balloon having a plurality of outwardly-facing, spaced-apart, segmented, annular ribs or lands integrally molded with the balloon for engaging the coronary sinus, each segmented annular rib or land comprising a plurality of solid raised rib portions separated by non-raised portions extending annularly around the periphery of the balloon in alternating fashion, each raised rib portion having a non-conical upper surface sloping smoothly and gradually toward the surface of the balloon; and a stylet comprising; a handle; and a shaft extending from the handle and adapted to fit within the infusion lumen of the catheter, the shaft comprising; a generally elongate malleable wire having proximal and distal portions; and a generally elongate sleeve surrounding the proximal portion of the malleable wire, the sleeve being relative stiff in comparison with the malleable wire to provide stiffness to a proximal portion of the catheter; the distal portion of the malleable wire extending distally from the sleeve, the distal portion of the malleable wire being readily deformable in comparison with the sleeve, thereby facilitating deforming the malleable wire to hold the distal portion of the catheter in a desired configuration to facilitate the insertion of the catheter into the coronary sinus. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A coronary sinus catheter assembly for the retrograde infusion of cardioplegia solution into the coronary sinus of a patient'"'"'s heart, the catheter assembly comprising:
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a catheter comprising; a flexible, elongate catheter tube having proximal and distal ends and an outer diameter, and including at least an infusion lumen extending longitudinally through the tube, at least one infusion lumen outlet generally adjacent the distal end of the catheter tube, and means adjacent the proximal end of the catheter tube for connecting a source of cardioplegia solution to the catheter; and an inflatable balloon on the catheter tube generally adjacent the distal end of the catheter tube proximally of the infusion lumen outlet, the inflatable balloon being formed of elastomeric material and having a plurality of outwardly-facing, spaced-apart, segmented, annular ribs or lands integrally molded with the balloon for frictionally engaging the coronary sinus, each segmented annular rib or land comprising a plurality of solid raised rib portions separated by non-raised portions extending annularly around the periphery of the balloon in alternating fashion; the direction along the catheter tube from its proximal end toward its distal end constituting the forward direction, and the raised rib portions having a generally asymmetrical profile along the longitudinal direction of the catheter, the raised rib portions having an upper surface sloping smoothly and gradually forwardly to the surface of the balloon, and a back surface extending from the upper surface more steeply to the surface of the balloon than the upper surface slopes to the surface of the balloon; and a stylet comprising; a handle; and a shaft extending from the handle and adapted to fit within the infusion lumen of the catheter, the shaft comprising; a generally elongate malleable wire having proximal and distal portions; and a generally elongate sleeve surrounding the proximal portion of the malleable wire, the sleeve being relative stiff in comparison with the malleable wire to provide stiffness to a proximal portion of the catheter; the distal portion of the malleable wire extending distally from the sleeve, the distal portion of the malleable wire being readily deformable in comparison with the sleeve, thereby facilitating deforming the malleable wire to hold the distal portion of the catheter in a desired configuration to facilitate the insertion of the catheter into the coronary sinus. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A coronary sinus catheter assembly for the retrograde infusion of cardioplegia solution into the coronary sinus of a patient'"'"'s heart, the catheter assembly comprising:
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a catheter comprising; a flexible, elongate catheter tube having proximal and distal ends and an outer diameter, and including at least an infusion lumen extending longitudinally through the tube and a lumen for pressure monitoring, at least one infusion lumen outlet generally adjacent the distal end of the catheter tube, and means adjacent the proximal end of the catheter tube for connecting a source of cardioplegia solution to the catheter, the direction longitudinally along the catheter from its proximal end toward its distal end constituting the forward direction; and an inflatable balloon on the catheter tube generally adjacent the distal end of the catheter tube proximally of the infusion lumen outlet, the inflatable balloon being formed of elastomeric material and having a plurality of outwardly-facing, spaced-apart, segmented, annular ribs or lands integrally molded with the balloon for frictionally engaging the coronary sinus, each segmented annular rib or land comprising a plurality of solid raised rib portions separated by non-raised portions extending annularly around the periphery of the balloon in alternating fashion, the inflatable balloon being expandable from an un-inflated diameter, generally equal to the outer diameter of the catheter tube for introducing the catheter into the coronary sinus, to an inflated diameter, substantially greater than the outer diameter of the catheter tube for securing the distal end of the catheter in the coronary sinus, the raised rib portions having a generally asymmetrical profile along the longitudinal direction of the catheter, the raised rib portions having an upper surface sloping smoothly and gradually forwardly to the surface of the balloon, and a back surface extending from the upper surface more steeply to the surface of the balloon than the upper surface slopes to the surface of the balloon; and a stylet comprising; a handle; and a shaft extending from the handle and adapted to fit within the infusion lumen of the catheter, the shaft comprising; a generally elongate malleable wire having proximal and distal portions; and a generally elongate sleeve surrounding the proximal portion, of the malleable wire, the sleeve being relative stiff in comparison with the malleable wire to provide stiffness to a proximal portion of the catheter; the distal portion of the malleable wire extending distally from the sleeve, the distal portion of the malleable wire being readily deformable in comparison with the sleeve, thereby facilitating deforming the malleable wire to hold the distal portion of the catheter in a desired configuration to facilitate the insertion of the catheter into the coronary sinus. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
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Specification