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8795149 Pneumatic or hydraulic cardiac assist devices  
The embodiments relate to cardiac assist devices that comprise a jacket that wraps the exterior of the heart, where the jacket comprises one or more pneumatic or hydraulic bladders. The pneumatic...
8771164 Fluid pumping ventricular assist device and components with static seal  
A ventricular assist device (VAD) having static seal structure for a pump housing which includes a support structure, a first sealing element, and a second sealing element. The support structure...
8702793 Implantable one-piece heart prosthesis  
Disclosed is an implantable one-piece heart prosthesis having a driving artificial ventricle and a driven artificial ventricle. A main actuator is configured to transmit to the driving artificial...
8092365 Resonant multilayered impedance pump  
A multilayered impedance pump is formed by an inner tube and an outer tube which have different mechanical characteristics. The outer tube is relatively stiff, and can be used for a structural...
7988614 Organ assist system and method  
An organ assist system having a closed fluid system having a ring-shaped prosthetic contactively surrounding at least a portion of a body part, including bladders adapted for selectable dilation...
7841977 Devices and methods for absorbing, transferring and delivering heart energy  
A device for altering cardiac performance includes an energy absorbing element which absorbs cardiac pumping energy from at least a portion of the heart. The energy may be delivered to another...
7361137 Surgical procedures and devices for increasing cardiac output of the heart  
Methods and devices for passively assisting the cardiac function of the heart are disclosed. A method of increasing the cardiac output of a heart includes providing a site of surgical access to...
7244224 Pump driving unit for driving a pump used for supporting or substitution of cardiac function  
In a small sized pump driving unit, a fluid pump is used for driving the pump for supporting of substituting of cardiac function. The fluid pump can generate pressure fluctuations that can...
7217236 Universal pneumatic ventricular assist device  
A pneumatic ventricular assist device (VAD) is disclosed for use in any circulatory support application including RVAD, LAVD, or BIVAD, trans-operative, short-term or long-term, tethered...
6945998 Corporal implantation device for assisting blood and heart ventricular circulation  
A dual pusher-plate blood pump implanted into the body with either mechanical or biological valves (17) for unidirectional blood circulation through a circulation variable chamber (blood chamber)...
6709383 Device for driving blood pumps  
A blood pump driving device which is capable of making a blood pump 10 free from an unbalance between loads when sucking and discharging, respectively and which makes it possible to eliminate a...
6540659 Cardiac assistance systems having bi-directional pumping elements  
A unified, non-blood contacting, implantable heart assist system surrounds the natural heart and provides circumferential contraction in synchrony with the heart's natural contractions. The...
6540658 Left-right flow control algorithm in a two chamber cardiac prosthesis  
A biventricular cardiac prosthesis has a flow balance control system to balance blood flow through the left and right sides of the prosthesis to maintain a patient's left atrial pressure within...
6471633 Mechanical auxillary ventricle blood pump with reduced waist portion  
An apparatus adapted to be inflated and deflated in response to selective communication with a source of pressurized fluid includes a bladder having a semi-rigid shell body portion and a...
6398715 Apparatus for assisting systolic and diastolic cardiac function  
The present invention pertains to an apparatus for assisting a patient's heart operation. The apparatus comprises a mechanism for expanding and collapsing a right ventricle free wall of a heart of...
6254525 Cardiac assist system and method thereof  
A cardiac assist system includes a sensor that is operative to sense the electrical activity of a patient's heart. The sensed electrical activity is processed to determine the onset of ventricular...
6238334 Method and apparatus for assisting a heart to pump blood  
A ventricular cuff is designed to assist a heart to pump blood by applying uniform pressure to a majority portion of an exterior ventricular surface of the heart. A heart engaging structure is...
6206820 Device for supporting cardiac function having elastic filling chambers  
A device for assisting the functioning of a heart has elastic filling chambers attached to an elastic cover which can be placed at least partially around the heart. The filling chambers can be...
6168624 Apparatus and methods for revascularization and perfusion  
The invention is practiced by introducing a catheter (10)into the left ventricle of the heart. Deployment of an intraventricular pump assembly (12) from the end of catheter (10) is carried out by...
6001127 Annuloplasty ring holder  
An annuloplasty ring and support assembly includes a ring support that has a peripheral wall with a peripheral shoulder surface, and a flange extending at generally right angles to the shoulder...
5971910 Method and apparatus for assisting a heart to pump blood by applying substantially uniform pressure to the ventricles  
An apparatus and method for assisting a heart to pump blood includes a housing that defines an internal chamber for receiving a heart. The housing has a first opening to supply fluid to the...
5397349 Muscle and air powered LVAD  
A method for providing ventricular assist to a patient with a weak or nonfunctional heart includes attaching an artificial ventricle to a patient and pumping said artificial ventricle with a...
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....
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...
5222980 Implantable heart-assist device  
An implantable heart-assist device including extra-aortic balloon pump (EAB pump) for use in cooperation with a fluid pump is disclosed. The extra-aortic balloon pump includes a rigid, generally...
5192314 Synthetic intraventricular implants and method of inserting  
A synthetic intraventricular implant device adapted to be surgically secured in a ventricle of the heart of a patient. The shape, size and volume of the device so inserted will depend on the size...
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...
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...
5089016 Blood pump  
A blood pump having a toroidal shaped chamber concentrically positioned around a cylindrically shaped hydraulic pump. The toroidal chamber has two toroidal shaped portions, one portion having a...
5089020 Monoseptal, bi-ventricular artificial heart  
A total artificial heart, comprising a heart enclosure and an interior rigid septum attached at its periphery to the interior surface of the heart enclosure. This septum divides the heart into two...
5089018 Total heat prosthesis  
Total heart prosthesis including a casing implantable in the pericardial cavity, the geometry of which is similar to that of the natural heart, with a motor device inside the casing which...
4981484 Modified elliptical artificial heart  
An artificial heart device for producing heart pumping action as part of a total artificial heart implant comprising a housing of elongate configuration enclosing a pumping volume of sufficient...
4976729 Elliptical artificial heart  
An artificial heart device for producing heart pumping action as part of a total artificial heart implant comprising a semi-rigid housing of approximate ellipsoidal configuration which encloses a...
4902291 Collapsible artificial ventricle and pumping shell  
An artificial ventricle for use as part of a total artificial heart for implantation within a living being as part of its circulatory system. The ventricle includes a soft and flexible blood...
4863461 Artificial ventricle  
An artificial ventricle for replacing the human heart and comprising a shell formed from an upper housing and a lower base. A plurality of thin-walled, flexible pumping diaphragm layers are...
4851002 Couplable heart assistance modules  
The invention provides a prosthesis for mono or biventricular cardiac assistance implanted in the right hemi thorax between the diaphragm and the right lung. The prosthesis of the invention...
4846831 Manual back-up drive for artificial heart  
A manual back-up emergency drive device for air driven artificial hearts, particularly for the "Jarvik-7" heart, is adapted to be instantly connected to the air drive lines for the heart in the...
4838889 Ventricular assist device and method of manufacture  
A ventricular assist device and a method of manufacturing the ventricular assist device. The device is generally flat in shape and gently curved so that it may be comfortably implanted under the...
4781715 Cardiac prosthesis having integral blood pressure sensor  
An integral blood pressure sensor for a cardiac prosthesis of the type having a fluid chamber and a blood chamber separated by a flexible diaphragm which is actuated by a drive fluid pulsatingly...
4704120 Heterotopic artificial heart consisting of a one-piece cardiac prosthesis for biventricular assistance and implantable in the right hemithorax  
A one-piece prosthesis for biventricular cardiac assistance and reanimation is implanted in the right hemithorax between the diaphragm and the right lung symmetrically with respect to a diseased...
4588404 Total cardiac prosthesis  
The invention prosthesis is formed by a biventricular monoblock unit which comprises a sealed case implantable in the pericardial cavity. The actuating device is formed by two membranes working...
4578077 Blood pump applicable to an artifical heart  
A blood pump to be utilized as an artificial heart, comprises a housing provided with a port for introducing and discharging fluid, a cover portion for closing the housing tightly, a sac portion...
4576606 Implantable blood pump  
Inside a flexible shell (10), a deformable pocket (20) is connected to blood circulation via an inlet valve (30) and an outlet valve (40). The pocket is compressed by a floating assembly...
4536893 Implant device for substaining the activity of the myocardium  
The device comprises a container housing for enveloping, at least partially, the ventricular region of the myocardium. To the inner surface of the container housing are applied membrane means...
4376312 Hydraulically actuated cardiac prosthesis  
A cardiac prosthesis having a hydraulically actuated compressible blood pump. An actuation chamber adjacent the blood pump receives pulses of hydraulic actuation fluid from an actuator pump...
4222127 Blood pump and method of pumping blood  
A blood pump for implant or paracorporeal use having a rigid case with inlet and outlet valves defining a pumping cavity; an integral thin walled flexible sac freely confined within a pumping...
4177523 Artificial heart  
This invention relates to a fluid driven blood pumping apparatus for use as an artificial heart. This apparatus may be used as a temporary mechanical replacement or a permanent mechanical...
4162543 Artificial heart  
An artificial heart comprising at least one blood circulating pump having a transparent housing divided into two chambers by a diaphragm. One of the chambers is a hydraulic chamber having an inlet...
4144595 Artificial heart chamber  
An artificial heart chamber is structured with a nondeformable housing, with valves being provided in the housing for admitting and ejecting blood from the chamber, the valves including valve...

Matches 1 - 50 out of 71 1 2 >