초록 ▼

A cannula adapted for antegrade administration of cardioplegic solutions during surgical procedures on the heart. The cannula includes a flow lumen having a smooth interior surface to reduce hemolysis when blood is passed therethrough during reperfusion. Structures are included to allow the wall of

A cannula adapted for antegrade administration of cardioplegic solutions during surgical procedures on the heart. The cannula includes a flow lumen having a smooth interior surface to reduce hemolysis when blood is passed therethrough during reperfusion. Structures are included to allow the wall of the vessel, generally the aortic root, to be readily pierced so that fluid may pass through the flow lumen of the cannula into the heart. A suture flange is provided to secure the cannula to the heart. A pressure lumen is provided to communicate the pressure within the heart to a location where it can be monitored. A vent line is also provided to allow a surgeon to readily vent fluids out of the heart.

대표청구항 ▼

A cannula for administering cardioplegic solutions and other liquids in an antegrade direction into the heart through the wall of a vessel associated with the heart, the cannula comprising: means for piercing the vessel wall, said means positioned at a distal end of the cannula; a flow lumen having

A cannula for administering cardioplegic solutions and other liquids in an antegrade direction into the heart through the wall of a vessel associated with the heart, the cannula comprising: means for piercing the vessel wall, said means positioned at a distal end of the cannula; a flow lumen having a distal end located adjacent the distal end of the cannula and a proximal end, the flow lumen extending between the means for piercing the vessel wall and a proximal end of the cannula, the flow lumen adapted to be placed in communication with a liquid reservoir and allow the flow of a liquid from the liquid reservoir to the interior of the heart in an antegrade direction; first connecting means for connecting the proximal end of the flow lumen to the liquid reservoir; a pressure lumen located substantially parallel to the flow lumen having distal and proximal ends; a pressure port located at the distal end of the pressure lumen such that the pressure port opens directly into the vessel and does not open into the flow lumen when the cannula is in place on the vessel wall and such that the pressure within the vessel is communicated from the pressure port, through the pressure lumen, to the proximal end of the pressure lumen; and second connecting means for connecting the second end of the pressure lumen to a pressure monitoring device.