Patent ID: 8267887

Claim:
A coronary sinus occlusion catheter, comprising: a distal tip portion including an inflatable balloon device configured to engage an interior wall of a coronary sinus when inflated; a distal port arranged distally of the inflatable balloon device so that the distal port extends into the coronary sinus when the inflatable balloon device is inflated in the coronary sinus; an outflow port arranged proximally of the inflatable balloon device and being continuously open so that the outflow port is in fluid communication with the right atrium when the inflatable balloon device is inflated in the coronary sinus, wherein the distal tip portion at least partially defines a fluid flow path from the distal port to the outflow port; and an inner movable member positioned in the flow path from the distal port to the outflow port, wherein the inner movable member is adjusted between a first position in which the flow path from the distal port to the outflow port is occluded and a second position in which the flow path from the distal port to the outflow port is open.