Class 623/3.11 - Including electrical or magnetic means adjacent to flexible diaphragm or chamber to effect contraction thereto (e.g., electromagnet, shape memory material, etc.)

Subclass of Class 623 - Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor
Definition: Subject matter including a pliable diaphragm or compartment
No. of patents: 34
Last issue date: 04/22/2008

Number	Title	Issue Date
7361191	Heart wall actuation device for the natural heart An actuation system for assisting the operation of the natural heart comprises a framework for interfacing with a natural heart, through the wall of the heart, which includes an internal framework element configured to be positioned within the interior volume of a h...	04/22/2008
7338436	Implantable cardiac physical motion mapping device An elastic framework configured to be positioned around a portion of the heart has a plurality of first regions and a plurality of second regions positioned relative to the first regions. The framework allows for the positioning of the first regions and second regio...	03/04/2008
7247134	Devices and methods for heart valve treatment Devices and methods for improving the function of a valve (e.g., mitral valve) by positioning an implantable device outside and adjacent the heart wall such that the device alters the shape of the heart wall acting on the valve. The implantable device may alter the ...	07/24/2007
7238165	Fluid pump A pumping system 10 provides a physiological pulsatile flow and includes controller 121, a pump drive head 50 coupled to a motor 12 and a fluid housing 52 having at least one port 60. The port 60 includes a ball valve...	07/03/2007
7198594	Electrically-controllable multi-fingered resilient heart compression devices Soft, multi-fingered resilient robotic fingers for selectively assisting heart ventricles or other organ to produce internal pressure and to pump blood, in synchrony with the systolic contraction of the ventricle or organ, as well as providing arrhythmia control of ...	04/03/2007
7172551	Cyclical pressure coronary assist pump An intravascular pump, which may be a left ventricle assist device, comprising a wall defining a pumping chamber, the wall support by struts, the struts attached to or part of an actuation system to move the wall from an expanded position to a contracted position an...	02/06/2007
7144365	Implantable heart assist system and method of applying same An extracardiac pumping for supplementing the circulation of blood, including the cardiac output, in a patient without any component thereof being connected to the patient's heart, and method of using same. One embodiment of the extracardiac system comprises a pump ...	12/05/2006
7125376	Implantable heart assist system and method of applying same An extracardiac pumping for supplementing the circulation of blood, including the cardiac output, in a patient without any component thereof being connected to the patient's heart, and methods of using same. One embodiment of the intravascular extracardiac system co...	10/24/2006
7081084	Modular power system and method for a heart wall actuation system for the natural heart An actuation system for assisting the operation of a natural heart is disclosed. The actuation system includes a framework for interfacing with the natural heart and a power system that can be coupled to the framework. The framework includes an internal framework el...	07/25/2006
7074176	Air-pressure powered driver for pneumatic ventricular assist devices A driver for a pneumatic ventricular assist device (VAD) is powered by pressurized air, oxygen or any other gas commonly available in hospital rooms, intensive care units and operating rooms. The driver can provide both blood-ejecting pressure (systole) and blood-fi...	07/11/2006
6887192	Heart support to prevent ventricular remodeling This is a support device that prevents, reduces, and delays remodeling of diseased cardiac tissue, and also decreases the impact of such remodeling on collateral tissue is disclosed. The invention further reinforces abnormal tissue regions to prevent over-expansion ...	05/03/2005
6770024	Implantable counterpulsation cardiac assist device A hollow tubular element is inserted in the descending aorta. The caudad end contains a pressure sensitive passive or preferably, hydraulically or electrically activated, unidirectional valve. A flexible diaphragm situated in a rigid shell affixed over an opening in...	08/03/2004
6685621	Implantable heart assist system and method of applying same A method for further reducing the load on a heart suffering (ventricular size maintenance) from congestive heart failure comprising the application of a subcardiac pump having inflow and outflow conduits configured to fluidly connect to non-primary vessel...	02/03/2004
6592619	Heart wall actuation device for the natural heart An actuation system for assisting the operation of the natural heart comprises a framework for interfacing with a natural heart, through the wall of the heart, which includes an internal framework element configured to be positioned within the interior vo...	07/15/2003
6576010	Circular artificial heart An artificial heart device for minimizing the damage to blood cells having electromagnetically driven pistons which move the blood around and through a toroidal chamber. In first and second preferred embodiments no motor is used to drive the pistons and t...	06/10/2003
6221103	Device and method for restructuring heart chamber geometry A geometric reconfiguration assembly for the natural heart having a collar configured for surrounding the natural heart. The collar can include a plurality of bands, such as thin bands of about 0.2 mm in thickness, in a spaced relationship to each other, ...	04/24/2001
6197055	Single chamber mechanical heart A single chamber mechanical heart has a movable vane journaled in the apex of the casing, an inlet port and an outlet port in each side wall of the chamber, and means for mechanically reciprocating the vane to pump blood on either side of the vane. The va...	03/06/2001
6190409	Rotary torque-to-axial force energy conversion apparatus A rotary torque-to-axial force energy conversion apparatus employs a rotatable member, a translatable member, and a magnetic coupling therebetween. The magnetic coupling converts a rotary torque on the rotatable member to an axial force on the translatabl...	02/20/2001
6123724	Heart assist method and apparatus employing magnetic repulsion force A heart is artificially contracted to pump blood an artificial device that employs electromagnetic force. That device includes electromagnetic coils attached to ribs of the animal and permanent magnets are placed adjacent the electromagnetic coils. When d...	09/26/2000
6086591	Soft tissue anchor An anchor for fixing soft tissue within a bone tunnel includes a distal end sized and shaped for passage through the tunnel and a proximal end for extending into the tunnel. The distal end is constructed to engage bone cortex adjacent the tunnel opening. ...	07/11/2000
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 heart, and an electromagnetic field is generated as a function...	03/12/1996
5139516	Artificial heart and method of operating the same An artificial heart has two auricle and two ventricle chambers, and actuating diaphragms with an electromagnetic field forming element, so that they expand and contract under the action of electric current applied to the element, or expand and contract un...	08/18/1992
5089017	Drive system for artificial hearts and left-ventricular assist devices A drive system for artificial hearts and left-ventricular assist devices. The drive system includes one or more implantable pumps driven by external electromagnets. Each pump preferably includes an armature made of a permanent magnet material having a mag...	02/18/1992
4869656	Ferromagnetic-fluid pump for pumping biological liquid A ferromagnetic-fluid pump includes a hollow body having a substantially rigid structure and an internal diaphragm dividing said body in two cavities. Each cavity has an inlet and an outlet opening provided with one-way valve. One edge of said diaphragm i...	09/26/1989
4809676	Heart assist device and method of implanting it An implantable heart assist device includes member to be surgically positioned about the aorta, and includes a series of electromagnetic segments connected electrically to a source of electricity implanted within or without the body. The electromagnetic s...	03/07/1989
4731076	Piezoelectric fluid pumping system for use in the human body A totally or partially implantable fluid delivery system actuated by a valveless piezoelectric drive system. The drive system may actuate an artificial heart by a hydraulic bladder or directly actuate a human heart. The drive system has an output with a f...	03/15/1988
4650485	Total artificial heart A total artifical heart prosthesis having a body defining a right ventricle chamber and a left ventricle chamber each provided with an inlet valve and outlet valve, as well as with a flexible membrane dividing each ventricle chamber into a blood-receiving...	03/17/1987
4599083	Method and device for fluid transfer There is provided a method and device for fluid transfer. The device comprises a housing-like body with a wall having a concavity. Inside the housing there is disposed a magnetically activatable diaphragm capable of forming, in conjunction with the concav...	07/08/1986
4302854	Electrically activated ferromagnetic/diamagnetic vascular shunt for left ventricular assist A valved compressible state of the art Dacron shunt is sutured to the left atrium and to the descending thoracic aorta. One ferromagnetic and one diamagnetic shunt compression plate is positioned on one side of the shunt with the two plates in opposing re...	12/01/1981
4221548	Dual action solenoid pump A pump for moving a fluid, as blood, having a body and end members forming a cylindrical chamber. A free floating piston located in the chamber is moved along the length of the chamber with a solenoid to pump blood into and out of opposite ends of the cha...	09/09/1980
4185617	Magnetically driven cardiac-assist pump system A magnetically driven pump system designed for use with a body-implantable heart-assist device. The system includes a body-implantable bellows-type pump adapted to transfer fluid to and from the heart-assist device, and a driving unit effective to drive t...	01/29/1980
4176411	Cardiac assist device employing electrically stimulated artificial muscle A left atrial to descending thoracic aorta shunt is encircled by an artificial muscle sheath consisting of a multiplicity of connected rod-like segments formed of an elastomer. Each segment contains a series of embedded electromagnets and surrounding disp...	12/04/1979
4102610	Constant volume seal-free reciprocating pump A reciprocating pump having a piston completely enclosed by and moving within a cylinder. The pumping action is provided by the interaction between a magnetic component embedded in the piston and an external varying magnetic field produced by a permanent ...	07/25/1978
4014318	Circulatory assist device and system A circulatory assist device and system are provided for controlling, wholly or partially, the pumping of blood through a blood vessel or vascular prosthesis. The assist device is comprised of an electrically operated plunger, or equivalent, which momentar...	03/29/1977

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Class 623/3.11 - Including electrical or magnetic means adjacent to flexible diaphragm or chamber to effect contraction thereto (e.g., electromagnet, shape memory material, etc.)