Patent ID: 8500686

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 in an inflated condition a first pressure sensor lumen extending to a distal position that is distal of the inflatable balloon device for detecting a first pressure; a second pressure sensor lumen extending to a proximal position that is proximal of the inflatable balloon device for detecting a second pressure; wherein the first pressure sensor lumen and the second pressure sensor lumen are positioned relative to one another such that a difference between the first pressure and the second pressure is indicative of a flow rate of blood passing along the distal tip portion from a region distal of the balloon device to a region proximal of the balloon device; wherein the inflatable balloon device comprises a stabilization balloon that is configured to remain continuously inflated when blood passes along the distal tip portion from the region distal of the balloon device to the region proximal of the balloon device; and 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 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.