Matches 401 - 450 out of 598 < 1 2 3 4 5 6 7 8 9 10 11 12 >
Match Document Document Title
5332403 LVAD with t-shape and unidirectional valve  
A ventricular assist device comprises an artificial ventricle including a blood compartment, a pumping compartment and a pumping membrane separating the respective blood and pumping compartments. A...
5324323 Multiple channel cardiosynchronous myoplasty apparatus  
A neuromuscular stimulation apparatus and procedure, which employs multiple channels of stimulation for the purpose of supplying directional control of blood flow in addition to augmenting the...
5318501 Linear motion, muscle-actuated cardiac assist device  
A linear motion, muscle-actuated cardiac assist device novelly uses a powering muscle whose contractions and relaxations are made in a substantially linear fashion, as opposed to the curvilinear...
5314469 Artificial heart  
A cyclic action, electromechanically operated artificial heart having a pusher plate assembly disposed between a pair of bladders for alternately compressing one bladder containing blood directed...
5312341 Retaining apparatus and procedure for transseptal catheterization  
The invention comprises retaining apparatus for transseptal catheterization and a procedure for the use of same. The retaining apparatus is a selectively deployable retaining means disposed at or...
5300113 Cardiac ventricular assistance device particularly for compensating for weakened heart muscle function and for maintaining the vital body functions  
A single cardiac ventricular assistance device intended to integrate the ctions of a ventricular assistance device (V.A.D.) proper and of an aortic balloon pump (IABP) includes a single energy...
5300112 Articulated heart pump  
An articulated, intravascular pump having multiple pump sections linked together for relative motion and driven by a common drive cable is disclosed. Each pump section is relatively short, so that...
5300015 Blood conduit for pulsatile cardiopulmonary bypass pump  
A blood conduit for a pulsatile cardiopulmonary bypass pump constructed and arranged to provide a surge chamber, a pumping chamber, and a reservoir portion. The blood conduit precludes the...
5290227 Method of implanting blood pump in ascending aorta or main pulmonary artery  
This invention relates to a method of surgically implanting a blood pump into the ascending aorta or pulmonary artery of a patient with a diseased or damaged heart ventricle. One preferred type of...
5287861 Coronary artery by-pass method and associated catheter  
A coronary-bypass method uses a collapsible stent made of a biocompatible material and having an inherent spring bias tending to form the stent into a substantially tubular opened configuration....
5282849 Ventricle assist device with volume displacement chamber  
A ventricle assist device for placement within a living body and including a self contained drive motor for generating pumping action with respect to a hydraulic pumping fluid. The ventricle assist...
5275580 Auxiliary artificial heart of the embedded-in-body type  
An auxiliary artificial heart embedded in the human body. The auxiliary artificial heart has an apex cordis area ring and a body. The apex cordis area ring is embedded in a cut-out apex cordis area...
5273518 Cardiac assist apparatus  
Regulators for improved cardiac assist systems of the type including skeletal muscle powered fluid pressure means, a cardiac cup and/or an aortic balloon pump. The regulators convert the positive...
5271746 Implantable blood pump with inextensible deformable closed bag  
The invention relates to an implantable blood pump of the type comprising a shell, a closed deformable bag, an inlet valve and an outlet valve, a drum arranged to roll over a wall of the bag, a...
5269811 Primary fluid actuated, secondary fluid propelling system  
A primary fluid actuated, secondary fluid propelling system, suitable for use, for example, as an implantable, artificial heart device, comprises a unidirectional pump for pumping...
5267940 Cardiovascular flow enhancer and method of operation  
An implanted cardiovascular assist pump is connected with the proximal descending thoracic aorta. The pump inlet is connected with the aorta at substantially the site of the first pressure/flow...
5263979 Artificial heart  
The invention is directed to an artificial heart having a pump, first and second pair of switching valves, and an electronic control unit which is arranged to control the valves to be actuated...
5256132 Cardiac assist envelope for endoscopic application  
A cardiac assist envelope for endoscopic application to permit the anatomic insertion of the envelope through an endoscopic cannula in which the body of the envelope is formed of a flexible but...
5232434 Fluid feeding pump unit  
A pump unit for assisting in the blood feeding operation of a heart includes a pair of pumps 7a, 7b connected in parallel with each other. When the pump 7a (or 7b) has reached its expanded position...
5230692 Intra-aortic balloon pump  
An intra-aortic balloon pump of this invention comprises a catheter (4) which introduces a pumping media, a wrapped membrane (5) which is mounted on one end of the catheter (4), a protection sleeve...
5211659 Pump system suitable as a heart assist device  
Artificial heart type devices are made into practical heart assist devices by making the blood chambers of the device disposable or by adapting the blood chambers to accept disposable inserts. The...
5205810 Muscle powered cardiac assist system  
A method and apparatus for providing assistance to a patient's heart using a surgically prepared skeletal muscle. A skeletal muscle, such as the latissimus dorsi, is carefully separated from the...
5195942 Cardiac arrest treatment  
A method and apparatus are described for resuscitating a person who has suffered cardiac arrest. The method includes threading a balloon through the aorta until it lies along the ascending aorta,...
5195877 Fluid pump with magnetically levitated impeller  
A fluid pump with rotary impeller is disclosed which comprises an electromagnetically-driven, bearing-free, seal-free rotary impeller levitated by localized opposed, repulsive, permanent magnetic...
5195518 System and method for enhancing collateral cardiac blood flow  
There is provided a system and method for enhancing collateral blood flow to the heart of a patient having angina with otherwise normal cardiac function. Skeletal muscle from the patient is attachd...
5193977 Flexible membrane sealless centrifugal pump  
Centrifugal pumps (10) are disclosed having nonrotatable membranes (21) to rotate fluid in a pumping chamber having at least a first open passage inlet (71) and an open passage outlet (91)....
5181518 Method of evaluating cardioprotective agents  
A bioassay and model is disclosed for screening experimental cardioprotective drugs and techniques, which employs small laboratory animal hearts in a model which mimics the pathophysiologic process.
5178515 Medical pump  
A medical pump comprises a casing having side walls, a peripheral wall, and a pump chamber defined thereby, an inlet port formed substantially in the central portion of one of the side walls of the...
5176619 Heart-assist balloon pump with segmented ventricular balloon  
A heart-assist device which includes a flexible catheter carrying at least a ventricular balloon, such balloon corresponding in size and shape to the size and shape of the left ventricle in the...
5171207 Apparatus and method of use for pulsatile blood flow  
An apparatus and a method of use are disclosed which assist in pulsating blood to a patient during cardiopulmonary bypass surgery and assists in weaning a patient after cardiopulmonary bypass...
5169381 Ventricular assist device  
A ventricular assist device for documenting compressive forces on the right and left ventricular surface of a heart in terms of pressure reactions transmitted from fluid contents in sacs adjacent...
5169378 Intra-ventricular expansible assist pump  
An expansible assist pump for implantation through the femoral artery (left ventricle) or the femoral vein (right ventricle) is used as circulatory support in patents with severe cardiac shock. The...
5163910 Intracatheter perfusion pump apparatus and method  
An intracatheter pump apparatus and method is described for infusing fluids through a lumen of a catheter. The intracatheter pump includes a motor or power source on the outside of the catheter...
5158097 Paraneural stimulating lead  
This invention pertains generally to an implantable medical lead for stimulating muscle or tissue contraction and a method for using the same, and specifically to a paraneural electro-stimulating...
5147392 Pumping drive unit  
A pumping unit is disclosed which alternately applies a positive and a negative pressure, both of given values, to aa drive chamber of an artificial heart. In a first and a second embodiment, air...
5147388 Auxiliary artificial heart of the embedded-in-body type  
An auxiliary artificial heart embedded in the human body. The auxiliary artificial heart has an apex cordis area ring and a body. The apex cordis area ring is embedded in a cut-out apex cordis area...
5147281 Biological fluid pumping means and method  
A ventricular assist device for temporary assistance to persons with failing or damaged hearts. A container includes inlet and outlet ports to the patient's circulatory system and a pumping...
5145333 Fluid motor driven blood pump  
A rotary blood pump includes an impeller in a pump chamber driven by a fluid motor. In a first preferred embodiment, the fluid motor includes a rotary member having a series of cupped fluid...
5139517 Orthotopic intraventricular heart pump  
An intraventricular pump (IVP) is a surgically-implanted orthotoxic heart pump capable of augmenting either one or both of the heart's ventricles. The IVP pumps blood using an internal diaphragm...
5135539 Quick-connect, totally implantable cardiac prosthesis with floating membranes and removable sensitive elements  
This invention relates to an implantable cardiac prosthesis constituted by a quick-connect, one-piece module comprising two ventricular chambers, rendered biocompatible, independent and activated...
5135467 Implantable system and method for coronary perfusions assistance  
An implantable coronary perfusion assist system to divert blood from large arteries, such as the aorta, to small arteries, such as the coronary arteries where additional blood flow is needed. The...
5133744 Tubular-valued artificial heart  
The artificial heart is designed for intrathoracic implantation, while its operation is effected by means of an extracorporeal control and energy feed system, form by a reduced console and...
5131905 External cardiac assist device  
An external cardiac assistance device is provided for augmenting cardiac contractions. The device includes a flexible, non-distensible shell adapted to be positioned over the base of the heart. A...
5129789 Means and method of pumping fluids, particularly biological fluids  
A system for pumping of fluids, particularly biological fluids such as blood, including a tubular length of magnetostrictive material. One-way valves are positioned generally in opposite ends of...
5118264 Purge flow control in rotary blood pumps  
A blood pump includes a housing an inlet and outlet communicating with a pump chamber. A rotor received in the pump chamber is rotated by a drive motor. A drive shaft extending between the motor...
5112349 Heart assist pump  
A temporary circulatory assist pump is disclosed for implantation in the heart of a patient through the femoral artery. The pump is driven by a flexible drive shaft extending through a catheter and...
5112292 Helifoil pump  
A temporary circulatory assist pump is disclosed for implantation in the heart of a patient through the femoral artery. The pump is driven by a flexible drive shaft extending through a catheter and...
5108360 Monitoring system for medical pump  
A monitoring system for a medical pump having a reversible operating body for compressing/expanding a space for accommodating a fluid, suction/ejection ports communicating via a no-return valve...
5100383 Catheters permitting controlled diffusion  
A non-thrombogenic surface is provided by forming a reservoir from which anticoagulant solution can permeate through a flexible wall (5, 6) of bio-compatible permeable material. Such reservoirs can...
5100374 Apparatus for driving blood pump  
An apparatus for driving a blood pump such as an artificial heart. The apparatus comprises a first pressure pulse generator, a second pressure pulse generator, a pressure detector for detecting the...
Matches 401 - 450 out of 598 < 1 2 3 4 5 6 7 8 9 10 11 12 >