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6165120 Heart wall tension reduction apparatus and method  
An apparatus for treatment of a failing heart by reducing the wall tension therein. In one embodiment, the apparatus includes a tension member for drawing at least two walls of a heart chamber...
6162167 Blood pump device having a journal  
A blood pump device which includes a blood pump having blood transport ports and cannulae connected to the ports. The blood pump device also includes a coating material covering the junction...
6155969 Centrifugal pump for pumping blood and other shear-sensitive liquids  
The invention relates to a centrifugal pump comprising a pump head (1) and a drive (2) for delivering blood and other ?-sensitive fluids, such as cell-containing cleaning suspensions, for example,...
6146325 Ventricular assist device  
An implantable VAD (preferably an LVAD) includes a compliance chamber which forms a reservoir for liquid extending from adjacent the bottom of the compliance chamber upwardly towards the top of...
6139487 Intracardiac pump device  
The pump device comprises a first pump (10a) that may have its intake side inserted into the left ventricle (42) of the heart, while the delivery side is located in the aorta (40), and a second...
6135729 Blood pump bearing system  
An apparatus is are provided for a blood pump bearing system within a pump housing to support long-term high-speed rotation of a rotor with an impeller blade having a plurality of individual...
6135943 Non-invasive flow indicator for a rotary blood pump  
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...
6132364 Heart assist system and method  
A one-way valve for use in a heart-assist device, said valve comprising: an outer sheath, defining an enclosing a lumen therein, and comprising a first radial opening; an inner sleeve, rotatably...
6127410 Compositions, apparatus and methods for facilitating surgical procedures  
Methods are provided for conducting surgical procedures in a patient wherein, during the surgical procedure, autonomous ventricular electrical conductivity and escape beats are reversibly and...
6123659 Blood pump with profiled outflow region  
The invention provides an axial flow blood pump with slanting outflow components. Specifically, the invention provides a blood pump having an angling outer stator blade edge structure in...
6110098 System and method of mechanical treatment of cardiac fibrillation  
There is provided an implanted system and method for delivering subsonic mechanical waves to one or more selected patient areas, the areas including the patient's heart and/or lungs. The...
6106551 Communication method for implantable medical device  
A medical assembly, such as an artificial heart assembly, adapted to be implanted within a living subject is composed of an implantable data communications interface adapted to receive an encoded...
6102845 Ventricular assist device with minimal blood contacting surfaces  
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...
6099460 Electromagnetic heart assist technique and apparatus  
A heart can be artificially contracted to pump blood by separate electromagnets to the exterior surface of the heart and implanting another electromagnet inside a heart chamber. Electric currents...
6095968 Reinforcement device  
A heart assist device intended for the long term support of certain late-stage cardiac failure states, particularly those known in the practice of cardiology to be called a dilated cardiomyopathy....
6086526 Cardiac assistance system  
A system to provide cardiac assistance to a patient's heart. The system includes a pulse generator adapted to be coupled to patient's heart and adapted to be coupled to a skeletal muscle ventricle...
6083260 Reverse flow transport pump and organ stabilization apparatus including related methods  
A reverse flow pump for transporting bodily fluids comprising an outer pump housing formed with concentric inner and outer passageways, a rotatedly fixed rotor positioned within the pump housing,...
6071258 Perfusion control assembly with improved component visibility and accessibility  
An improved perfusion control assembly comprising a console and an oxygenator flanked by at least two flanking units, wherein a first flanking unit is a pump assembly and additional flanking units...
6068588 Counterbalanced pump  
Fluid is periodically pumped through a motor-driven tubular pump at a substantially constant pumping frequency. The pump includes at least one resiliently reciprocate counterbalancing ring joined...
6066085 Single chamber blood pump  
A blood pump apparatus can include a pump housing having a drive chamber containing a drive mechanism. A cupped member can be connected to the housing and the drive mechanism can include a motor...
6063115 Cardiac assistance system  
A system to provide cardiac assistance to a patient's heart. The system includes a pulse generator adapted to be coupled to patient's heart and adapted to be coupled to a skeletal muscle ventricle...
6058593 Method for producing a micro motor  
PCT No. PCT/EP98/01867 Sec. 371 Date Dec. 1, 1998 Sec. 102(e) Date Dec. 1, 1998 PCT Filed Mar. 31, 1998 PCT Pub. No. WO98/44619 PCT Pub. Date Oct. 8, 1998A micro motor is manufactured by slipping...
6057689 Apparatus and method for leak detection in a fluid-filled balloon useful to treat body tissue  
An apparatus for detecting leaks in a fluid-filled device used to treat a patient's tissue includes an catheter having an expandable device defining a fluid reservoir about the distal end of the...
6050932 Control circuit for an implantable heart-assist pump of the back-pressure balloon type  
The pump (10) has variable volume means (24) co-operating with a distinct volume (20) through which the blood flows for the purpose of varying said volume (20) through which the blood flows in...
6042347 Pedia-cadio pump  
An implantable electric pump for assisting blood flow in a patient in need thereof comprises a non-rotating pump housing and an electric motor enclosed within the housing, all motor components...
6030336 Pressure generator for a counterpressure cardiac assistance device  
A pump comprises variable volume means inserted in an artery, in particular, the descending aorta, enabling the volume through which the blood flows in this location to be modified cyclically and...
6030335 Implantable heart-assist pump of the back-pressure balloon type  
The pump comprises: an essentially rigid body open at both ends and designed to be inserted in the down aorta artery; a flexible and elastic membrane (18) in the form of a sleeve connected in...
6008625 Use of double cells to power an implantable medical device  
A power source including two alkali metal/transition metal oxide cells discharged in parallel to power an implantable medical device is described. The first cell powers the medical device in both...
6007478 Cannula having constant wall thickness with increasing distal flexibility and method of making  
A cannula for use as for example on the inflow end of an implantable intravascular heart pump. The stiffness of the cannula is differentiated along its length, wherein its proximal end is stiffer...
6001056 Smooth ventricular assist device conduit  
A smooth-walled non-crimped inflow conduit for an implantable ventricular assist system. The conduit has an internally smooth lumen surface for enhanced washing of the conduit under irregular...
5984857 Step-down 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...
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...
5947892 Rotary blood pump  
A blood pump that comprises a pump housing having a blood flow path therethrough, a blood inlet, and a blood outlet; a stator mounted to the pump housing, the stator having a stator field winding...
5941813 Cardiac assist device  
In a cardiac assist device, a housing has an inlet and outlet connectable to a patient's cardiovascular system. A pump is located within the housing to force blood that has entered through the...
5935095 External slot valve for controlling blood flow through the outlet of a shunt of a cardiopulmonary bypass pump  
An external slot valve for controlling blood flow through the outlet of a shunt of a cardiopulmonary bypass pump wherein a valve seat having a knife edge is fixedly connected to the fixed plate of...
5928132 Closed chest intra-aortic balloon based ventricular assist device  
A closed chest intra-aortic balloon catheter based ventricular assist device comprising an intra-aortic balloon (IAB) catheter and a pumping chamber having a smaller diameter portion and a more...
5924975 Linear pump  
A linear pump includes a housing having a bore and axially spaced apart inlet and outlet. A first check valve is joined to the housing for controlling flow of fluid through the bore. A piston is...
5921913 Statorless intravascular microaxial flow pump  
An intravascular microaxial pump has an integrated configuration that enables both the drive unit as well as the pumping segment to be advanced through a patient's vasculature. The device includes...
5910124 Ventricular assist device and method  
Cardiac ventricular assist apparatus adapted to be placed by insertion through an incision in the wall of the upper abdomen below the rib cage and an incision in the inferior aspect of the...
5908378 Bi-ventricular cardiac assist device  
A bi-ventricular cardiac assist device maintains blood circulation in a patient having a minimally functioning or malfunctioning heart. The biventricular cardiac assist device includes a...
5904646 Infection resistant power cable system for medically implanted electric motors  
Implanted medical devices such as heart assist devices powered by electric motors or solenoids require a high amount of power compared to other electric implants such as pacemakers which do not...
5902229 Drive system for controlling cardiac compression  
An inflation system for independently controlling the rise time and plateau level of a pressure profile applied to an inflatable chamber includes a pneumatic source disposed in fluid communication...
5888241 Cannula pumps for temporary cardiac support and methods of their application and use  
A cannula pump is provided which incorporates a miniature rotary pump into a cardiac cannula of essentially the same size as currently utilized with routine cardiopulmonary bypass. The pump may be...
5888186 Muscle energy converter activated assist system and method  
A system for assisting the operation of a patient's heart. The system includes a muscle energy converter which is capable of connecting to a muscle of the patient for converting energy of the...
5851174 Cardiac support device  
An apparatus for pumping blood includes an elongated housing dimensioned to be at least partially positioned within the heart of a patient, a rotating member supported for rotational movement...
5848962 Device for assisting cardiac function  
Disclosed is a device for assisting cardiac function having the following atures: at least one half-shell is provided, the interior and exterior contours of which are designed in such a manner...
5843088 Tool and method for installation of a ventricular cannulation device  
A ventricular cannulation device. An inner part is placed in the cardiac chamber and an outer part is placed outside the cardiac wall. Each of the inner and outer parts is equipped with means for...
5827171 Intravascular circulatory assist device  
A circulatory assist device, having an outer balloon and an inner balloon, with a control space between the outer and inner balloons. The device is mounted on a catheter, collapsed to a...
5823185 Manual pressing and automatic air breathing cardiopulmonary resuscitation first-aid device  
This invention relates to a manual pressing and automatic air breathing cardiopulmonary resuscitation first-aid device, mainly comprising a manual pressing shaft, a pump, an air storage tank, a...
5824070 Hybrid flow blood pump  
A novel hydrodynamic blood pump with a very clean flow path free of outflow stator blades which have been found to be a site of blood clot formation is introduced. The invention combines an axial...