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5823930 Cam controlled pulsatile flow pump for neonatal and biventricular cardiac support systems  
A cam controlled pulsatile flow pump for neonatal and biventricular cardiac support systems wherein cylindrical cams having various profiles designed for a particular patient are selectively...
5820542 Modified circulatory assist device  
A circulatory assist device, having a housing and a pumping membrane, with a control chamber and a pumping chamber. The device is mounted on a catheter, collapsed to a sufficiently small diameter...
5814102 Process for training a skeletal muscle for a biomechanical heart and biomechanical heart using such a muscle  
A method for dynamically training a skeletal muscle (1) to be used for a biomechanical heart involves wrapping the skeletal muscle (1) around a deformable training device (2) which can contract,...
5810708 Ventricular assist conduit with externally supported tissue valve  
A ventricular assist device includes a pair of valved conduits and a pumping portion connected by these conduits into the circulatory system of a host patient. The pumping portion and valved...
5807384 Transmyocardial revascularization (TMR) enhanced treatment for coronary artery disease  
A transmyocardial revascularization (TMR) enhanced treatment for coronary artery disease and other medical procedures utilizing a source of laser energy and a laser delivery means attached...
5766207 Driver and method for driving pneumatic ventricular assist devices  
A driver for at least one pneumatically-actuated ventricular assist device (VAD), includes a portable housing which encloses a single pump for performing blood-filling and blood-emptying...
5758664 Method of maintaining a left ventricular assist device  
A method of making a left ventricular assist device (LVAD) using muscle wrapped around a mandrel to form a muscle pouch, the open end of which is sewn to a circular sheet of patch material having...
5749839 Direct mechanical bi-ventricular cardiac assist device  
A direct mechanical bi-ventricular cardiac assist device comprises a ventricular actuation cup having two independently operated diaphragms for independently actuating the right and left ventricle...
5743845 Biventricular pulsatile cardiac support system having a mechanically balanced stroke volume  
A biventricular pulsatile cardiac support system having a mechanically balanced stroke volume wherein a pair of side-by-side, valveless, compressible conduits extend through the compression...
5738626 Two-step cardiomyoplasty with ventricular reduction  
Cardiomyoplasty is a high mortality procedure (fifty percent two year mortality) with limited hemodynamic benefit. Excision of left ventricular myocardium in dilated congestive heart failure is...
5728069 Device for the pulsed pumping of liquids, particularly blood  
A device for the pulsed pumping of liquids, particularly blood, has a body in which are formed a pumping chamber in which a pulsed flow is imparted to the liquid, an inlet duct upstream of the...
5722429 Connecting arrangement for medical device  
In one embodiment described in the specification, a surgically implantable reciprocating pump employs a check valve as the piston, which is driven by a permanent magnet linear electric motor to...
5722930 Reciprocating pump circulatory assist arrangement  
In one embodiment described in the specification, a surgically implantable reciprocating pump employs a check valve as the piston, which is driven by a permanent magnet linear electric motor to...
5718248 Muscle energy converter pump and method of pumping fluid of a patient  
A muscle energy converter pump. The muscle energy converter is comprised of a piston having an attachment head for connection to a muscle. The muscle energy converter also comprises a cylinder...
5716318 Method of treating cardiac arrest and apparatus for same  
A method of treating a subject in cardiac arrest comprises the steps of blocking the descending aorta of the subject and perfusing the aortic arch of the subject with a protective solution in an...
5711753 Blood pump device and method of pumping blood  
The present invention pertains to a blood pump device which comprises a blood pump having blood transport ports and cannulae connected to the ports. The blood pump device also comprises a coating...
5704891 Electrohydraulic ventricular assist device  
A unified system for implantation in the thorax and for cannulation to the blood circulatory system comprises an electronic controller for generating an actuating signal and an energy convertor...
RE35707 Apparatus for driving medical appliances  
A self-propelled wheelchair type artificial heart driving apparatus for giving freedom of movement to those patients who require an auxiliary artificial heart. Various safety devices are provided...
5693000 Cardiomyoplasty simulator with feedback control  
A cardiomyoplastic muscle is stimulated electronically using a closed loop control system. As part of the system, a signal sensed the muscle which is characteristic of its condition. If this...
5685700 Bearing and seal-free blood pump  
A pump for transferring fragile and aggressive liquids such as human blood and comprising a pumping chamber along with a pair of fluid inlet ports arranged in oppositely disposed relationship on...
5683455 Training appliance for a muscle  
Implantable training appliance for a muscle, which is present for supporting the heart muscle, having a first chamber (3) which is filled with a gaseous and/or a liquid medium, has elastically...
5678570 Method of treating cardiac arrest  
A method of treating a subject under cardiac arrest comprises the steps of: blocking the descending aorta of the subject; then withdrawing blood from the subject; oxygenating the blood withdrawn...
5676632 Ventricular assist devices of enhanced hemocompatibility  
Ventricular assist devices fabricated from low-modulus Ti--Nb--Zr alloys to provide enhanced biocompatibility and hemocompatibility. The ventricular assist devices may be surface hardened by...
5674281 Artificial heart braking system  
An artificial heart assembly, designed for implantation into a subject, which may be a total artificial heart or a ventricular assist device. The heart assembly has a blood inlet conduit, a blood...
5658237 Cardiac assist device having improved muscle stimulation  
A cardiac assist device which provides an improved method of conditioning a skeletal muscle graft. In particular the present invention features a memory. The memory contains a regime to transform...
5647380 Method of making a left ventricular assist device  
A method of making a left ventricular assist device (LVAD) using muscle wrapped around a mandrel to form a muscle pouch, the open end of which is sewn to a circular sheet of patch material having...
5643215 Gas exchange apparatus and method  
The invention comprises the use of helical propellers as pumping mechanisms, in various sizes and configurations, to improve upon present devices involving the circulation of liquid solutions...
5643172 Tubular circulatory assist device  
A circulatory apparatus for assisting the movement of fluids with a pulsatile flow. The circulatory apparatus includes a restrictable tube, an element for passively restricting a segment of the...
5632716 Apparatus and method of muscle training in dynamic cardiomyoplasty  
A pacemaker or similar cardiac and cardiomyoplasty muscle stimulator is provided which during a training period of said muscle, defining alternating training and augmentation phases. During...
5628719 In vivo mechanical energy source and perfusion pump  
An in vivo source of mechanical energy is provided in close proximity to its load. In the disclosed embodiments, the mechanical energy source is a miniaturized motor ("micromotor") and the load is...
5613935 High reliability cardiac assist system  
A high reliability cardiac assist system is provided for permanent use. An electric motor having dual sets of coils rotates the impeller of an intraventricular axial flow pump in the preferred...
5603337 Two-stage cardiomyoplasty  
Heart failure may be treated by grafting a skeletal muscle around the heart in a procedure called cardiomyoplasty. The muscle graft is stimulated to contract in synchrony with the heart by a burst...
5597377 Coronary sinus reperfusion catheter  
A catheter for retroperfusion of myocardium has an infusion tip, such that when retroperfusing myocardium, the tip extends within the coronary sinus to a depth in a range of about 2 to 4 inches (5...
5578012 Medical fluid pump  
A medical pump apparatus including an internally sterile pumping chamber having a flexible diaphragm forming a wall portion and a drive rod extending through the diaphragm in a rotating vane...
5575766 Process for the nonsurgical mapping and treatment of atrial arrhythmia using catheters guided by shaped guiding introducers  
A process for the treatment of atrial arrhythmia by use of ablation and/or mapping procedures comprising ablating discrete ablation tracks within the left and right atrium of the heart by use of...
5562595 Multiple therapy cardiac assist device having battery voltage safety monitor  
A cardiac assist system which provides simultaneous cardiac assistance during a confirmed cardiac arrythmia, but which provides for the inhibition of the cardiac assistance in the event battery...
5558617 Cardiac compression band-stay-pad assembly and method of replacing the same  
A ventricular assist device for a heart includes a compression band-stay-pad assembly for encircling substantially the heart perimeter and comprising an elongated band member or chain disposed in...
5533957 Method of tissue retroperfusion  
A catheter for retroperfusion of myocardium has an infusion tip, such that when retroperfusing myocardium, the tip extends within the coronary sinus to a depth in a range of about 2 to 4 inches (5...
5531789 Sealing system of an artificial internal organ  
An artificial internal organ, such as an artificial heart, comprising a pump unit through which blood circulates and a drive shaft for driving the pump unit, the drive shaft having a shaft sealing...
5503615 Implantable cardiac ventricular assist device and controller thereof  
An implantable ventricular assist device is described which has only one moving part. This part consists of a conical rotor with vanes which spiral upward from the base in a direction opposite to...
5498228 Electromagnetic bi-ventricular assist device  
A device and method for assisting ventricular output in a human heart by compressing the heart. In the method, an electrocardiogram is generated as a function of the electrical activity of the...
5484385 Intra-aortic balloon catheter  
A balloon for an inter aortic balloon pump having an elongate tapered section extending from a proximal end of minimal diameter and progressively increasing in diameter toward the distal end. The...
5470208 Fluid pump with magnetically levitated impeller  
A fluid pump with a rotary impeller is disclosed which comprises an electromagnetically-driven, bearing-free, seal-free rotary impeller levitated by localized opposed, magnetic forces and by fluid...
5456715 Implantable mechanical system for assisting blood circulation  
Implantable mechanical system for assisting blood circulation using a blood circulation pump and wherein the system, being actuated by the power produced by the linear contraction of the skeletal...
5449342 Apparatus for assisting blood circulation  
An apparatus for assisting blood circulation includes an inflow tube which can be inserted into the right atrium from a peripheral blood vessel or which can be inserted into the left atrium from a...
5443504 Basic skeletal muscle energy conversion system  
This invention provides a simple skeletal muscle linear pull energy convertor which can harness the maximal amount of muscle power for a wide variety of implantable medical devices, including the...
5437601 Blood conduit and pulsatile cardiopulmonary bypass pump system  
A valveless blood conduit for pulsatile cardiopulmonary bypass pump constructed and arranged to provide a surge chamber, a pumping chamber and a reservoir portion, externally valved for use in a...
5433731 Mechanical defibrillator and method for defibrillating a heart  
An implantable heart defibrillator and a method for defibrillating a heart, employ a shock pulse generator for delivering a defibrillation shock to a heart, the delivered energy being mechanical....
5421807 Circulatory assist system  
A circulatory assist system includes a blood pump, a tube connected at one end portion thereof to the blood pump and having an inner space, a driving device having an outlet connected to the other...
5409444 Method and apparatus to reduce injury to the vascular system  
An apparatus and method for reducing peak systolic blood pressure and the rate of change of velocity of the blood flow in a living being by passively absorbing a portion of the blood pressure...