Cardiac Assist Technologies, Inc.

Cardiacassist, Inc

Yu, Yih-choung

Chiasson, John

Lehmann, Kirk A.

Griffin, Wayne P.

Wayne P Griffin

James A Magovern

Greg A Johnson

David W Kletzli

Richard E Davis

Yih-Choung Yu

Kirk A Lehmann

James Fonger

John Chiasson

Dennis Robert Trumble

Eric LaWhite

Michael Szwerc

An apparatus for treating a patient. The apparatus includes a catheter having a distal end and a proximal end. The distal end has an orifice through which a fluid can flow. The distal end has a port through which the fluid can flow. The port is adjacent to but apart from the orifice. The apparatus includes a mechanism for controlling the size of the port that is open. The controlling mechanism is disposed over the port and able to close the port. An apparatus for treating a patient. The apparatus includes a catheter having a proximal end and a distal end having an orifice through which a fluid can flow. The distal end has an end marker disposed about the orifice which appears in an image of an imaging device. An apparatus for treating a patient. The apparatus includes a catheter having a proximal end and a distal end having an orifice through which fluid can flow. The catheter has an axis. The distal end has a plurality of holes having an elongate shape disposed essentially in parallel with the axis of the catheter with smooth edges so blood cells are not damaged as they pass through the holes. A method for treating a patient. The method includes the steps of inserting a catheter in a vessel. Then there is the step of opening a port in the catheter disposed adjacent an orifice in the distal end of the catheter so blood can flow through the port and the orifice.

Method and apparatus for treating a patient

A perfusion cannula for treating a patient. The, cannula includes a hollow tube adapted for insertion into a vessel of the patient and adapted for fluid flow. The tube has a proximal end. The tube has a primary hole disposed in proximity to the proximal end for release of fluid from the tube and at least a first perfusion hole disposed in the tube wall for release of fluid from the tube. The cannula includes a widener extending from the outer surface of the tube and effectively extending the outer diameter of the tube. The inner diameter of the tube is smooth and continuous and has a circular, cross-section throughout. The widener is in spaced relation from the proximal end and in proximity to and in operational relation with the first perfusion hole wherein fluid in able to escape from the first perfusion hole without obstruction by the vessel wall when the tube is in the vessel wall. A perfusion cannula for treating a patient having at least a first ridge. A system for treating a patient. A method for treating a patient.

Perfusion cannula, method and system

An apparatus for non-invasive flow indication through a rotary blood pump. The apparatus includes a blood pump adapted for implantation into a patient. The blood pump has a moving mechanism which contacts blood and imparts energy to the blood to move the blood in the patient at a desired flow rate. The apparatus a mechanism for causing the moving mechanism to move the blood. The causing mechanism is engaged with the moving mechanism. The causing mechanism receiving energy to power the causing mechanism. The apparatus comprises a sensorless flow indicator connected to the blood pump to identify the flow of blood through the pump based only on an energy balance between the energy imparted to the blood by the moving mechanism and the energy received by the causing mechanism. A method for determining blood flow in a patient. The method includes the steps of providing energy to a blood pump implanted in a patient to operate the pump. Then there is the step of imparting energy to blood in the patient with the blood pump at a desired flow rate. Next there is the step of identifying the flow rate only by balancing the energy imparted to the blood with energy provided to the pump.

Non-invasive flow indicator for a rotary blood pump

A system for closing together a first side of a sternum and a second side of the sternum of a patient. The system includes a first grommet to be disposed in the first side. The system includes a second grommet adapted to be disposed in the second side. The system includes a mechanism for placing a grommet into the sternum. The placing mechanism is adapted to hold the grommet for placement in the sternum. The system includes a first wire suture for insertion through the first and second grommets. The system includes a stop mechanism for allowing the placing mechanism to place a grommet into the sternum only in a desired location of the patient and any other portion of the patient is protected from damage by the placing mechanism during operation. A grommet. An approximator. A drill stop mechanism. A placement tool. A method of threading a wire suture through a hole in a sternum. A method of bringing together a first side of a sternum and a second side of the sternum.

System, method and apparatus for sternal closure

An apparatus for repairing a vessel in a patient. The apparatus includes a graft. The apparatus includes a mechanism for compressing the vessel to the graft and holding the vessel to the graft. A method of repairing a vessel of a patient. The method includes the steps of placing a first end of a graft in contact with a first side of the vessel. Then there is the step of placing a second side of the graft in contact with the second side of the vessel. Next there is the step of compressing the first side of the vessel against the first end. Then there is the step of compressing the second side of the vessel against the second end.

Method and apparatus for vessel repair in a patient

An apparatus for non-invasive flow indication through a rotary blood pump. The apparatus includes a blood pump adapted for implantation into a patient. The blood pump has a moving mechanism which contacts blood and imparts energy to the blood to move the blood in the patient at a desired flow rate. The apparatus includes a mechanism for causing the moving mechanism to move the blood. The causing mechanism is engaged with the moving mechanism. The causing mechanism receiving energy to power the causing mechanism. The apparatus comprises a sensorless flow indicator connected to the blood pump to identify the flow of blood through the pump based only on an energy balance between the energy imparted to the blood by the moving mechanism and the energy received by the causing mechanism. A method for determining blood flow in a patient. The method includes the steps of providing energy to a blood pump implanted in a patient to operate the pump. Then there is the step of imparting energy to blood in the patient with the blood pump at a desired flow rate. Next there is the step of identifying the flow rate only by balancing the energy imparted to the blood with energy provided to the pump.

Stop mechanism and method therefor

Grommet and method therefor

Growing community of inventors

Cranberry, PA, United States of America

Wayne P Griffin