Source: http://www.google.es/patents/US6579223?hl=es&dq=flatulence
Timestamp: 2013-05-18 10:14:40
Document Index: 56083028

Matched Legal Cases: ['art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3', 'art 3']

Patente US6579223 - Blood pump - Google PatentesB�squeda Im�genes Maps Play YouTube Noticias Gmail Drive M�s » B�squeda avanzada de patentes | Historial web | Iniciar sesi�n B�squeda avanzada de patentesPatentesA pump especially designed for pumping blood comprises a bladder, the interior surface area and volume of which is changeable, i.e., it stretches and expands during the filling phase, and elastically contracts to its normal relaxed size during the ejection phase. The bladder has a fluid inlet and a fluid...http://www.google.es/patents/US6579223?utm_source=gb-gplus-sharePatente US6579223 - Blood pump N�mero de publicaci�nUS6579223 B2Tipo de publicaci�nConcesi�n N�mero de solicitud09/928,386 Fecha de publicaci�n17 Jun 2003 Fecha de presentaci�n13 Ago 2001 Fecha de prioridad13 Ago 2001Tambi�n publicado comoEP1416877A2EP1416877A4EP1416877B1US20030032854USRE40669WO2003015841A2WO2003015841A3 InventoresArthur Palmer Cesionario originalPalmer Arthur Clasificaci�n de EE.UU.600/16623/3.1 Clasificaci�n internacionalA61M1/12A61M1/10 Clasificaci�n cooperativaA61M2001/122A61M2001/1062A61M1/1037 Clasificaci�n europeaA61M1/10EReferenciasCitas de patentes (9)Otras citas (15) Citada por (15)Enlaces externosUSPTO Cesi�n de USPTO EspacenetBlood pumpUS 6579223 B2 Resumen A pump especially designed for pumping blood comprises a bladder, the interior surface area and volume of which is changeable, i.e., it stretches and expands during the filling phase, and elastically contracts to its normal relaxed size during the ejection phase. The bladder has a fluid inlet and a fluid outlet. A device, such as a vacuum pump, alternately expands and contracts the interior surface area and volume of the bladder. Most of the interior surface area of the bladder expands and contracts in each cycle. One or more check valves or other means for causing substantially one-way fluid flow through the bladder are also provided. The pump of the invention decreases the likelihood of blood clots forming in the pump, decreases the risk of damage to blood cells, improves the pumping characteristics of the device, and decreases or eliminates the chance of foreign fluids passing into the blood stream should a tear or break occur in the bladder.
FIELD OF THE INVENTION The present invention relates to pumps and more specifically to blood pumps, ventricular assist devices, and artificial hearts.
BACKGROUND OF THE INVENTION The natural heart functions in a fashion similar to a positive displacement pump. Each of the two pumping chambers in the natural heart has two check valves (an inlet and an outlet valve). The walls of the natural heart are made of contractile muscle that provide the power to pump the blood. Each pumping cycle consists of a filling or diastolic phase of the pumping cycle and an ejection or systolic phase of the pumping cycle. During the filling phase, the muscle fibers making up the walls of the heart relax allowing the chamber they surround to fill with blood. During the ejection phase of the cycle the muscle making up the walls of the heart contracts ejecting a portion of the blood from the chamber. The check valves assure one-way flow.
OBJECTS OF THE INVENTION It is an object of the invention to provide a blood pump that reduces the incidence of blood clotting.
SUMMARY OF THE INVENTION In attainment of these and other objects and advantages of the invention, a pump is provided that has an elastic, extensible or stretchable bladder that expands in the filling phase and contracts in the ejection phase of the pumping cycle. The pump is particularly well suited for pumping blood, as in a ventricular assist device or a total artificial heart. However, the pump of the invention will find applications in other industries and non-medical fields for pumping fluids other than blood. The summary and following detailed description is in reference to, but is not limited to, blood pumping applications.
BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1A though 1G schematically depict a first embodiment of the pump of the invention, and illustrate the pumping cycle of the same.
FIG. 4 shows a detail of a strut�bladder connection.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The following is a detailed description of certain embodiments of the invention presently deemed by the inventor to be the best mode of carrying out his invention. The invention as defined by the appended claims is not limited to these embodiments, and additional embodiments of the claimed inventive concept will undoubtedly be apparent to those skilled in the art.
Due to the smooth internal configuration or shape of the bladder 12 and the manner in which blood is �milked� into and through the bladder, as depicted in FIGS. 1A-1G, there are no areas within the path of blood flow that can become stagnant, diminishing the potential for damage to blood cells caused by undue turbulence and also diminishing clot formation.
Citas de patentes Patente citada Fecha de presentaci�n Fecha de publicaci�n Solicitante T�tuloUS41336161 Mar 19779 Ene 1979Thermo Electron CorporationStroke volume limiter for collapsible wall blood pump systemUS437631219 May 198115 Mar 1983Foxcroft AssociatesHydraulically actuated cardiac prosthesisUS455255215 Feb 198312 Nov 1985Fresenius AgPump system for use with dialysis and like apparatusUS485100231 Ago 198725 Jul 1989Biomasys, SarlCouplable heart assistance modulesUS493876628 Ago 19873 Jul 1990Jarvik; Robert K.Prosthetic compliance devicesUS522298027 Sep 199129 Jun 1993Medtronic, Inc.Implantable heart-assist deviceUS604549615 Abr 19944 Abr 2000Allegheny-Singer Research InstituteOccluder device and method of makingUS646447622 Dic 200015 Oct 2002Guagliano Peter A.Linear pump and methodEP0629412A215 Abr 199421 Dic 1994Seiko Epson CorporationAuxiliary artificial heart embedded in a ventricle of a heartOtras citasReferencia1An electromagnetically driven univalved artificial heart, Artificial Heart 3, Chapter 10, pp. 87-91, Nitta et al., 1990.2Axial Flow Pumps, Management of End-Stage Heart Disease Chapter 18, pp. 221-227, Fraxier, 1998.3Design of moving-actuator total, Artificial Heart 3, Chapter 27, pp. 229-233, Goo Min et al., 1990.4Development of an artificial heart actuator for a compliance chamberless blood pump, Artificial Heart 3, Chapter 17, pp. 137-142, Imachi et al., 1990.5Development of artificial heart With left and right ventricles using S linear pulse motor, Artificial Heart 3, Chapter 12, pp. 101-105, Umezu et al., 1990.6Left Ventricular Assist Devices, Management of End-Stage Heart Disease, Chapter 16, pp. 197-211, Argenziano et al., 1998.7Motor-driven, computer-controlled implantable cardiac assist device-An optical encoer for feedback control, Artificial Heart 3, Chapter 21, pp. 183-197, Nakamura et al., 1990.8Motor-driven, computer-controlled implantable cardiac assist device�An optical encoer for feedback control, Artificial Heart 3, Chapter 21, pp. 183-197, Nakamura et al., 1990.9Philadelphia Heart System (Cardiac Systems, Japan Medical Supply), Artificial Heart 3, p. 342, Unknown, 1990.10Preliminary study-Optimization of spiral vortex blood pump, Artificial Heart 3, Chapter 13, pp. 107-114, Umexu et al., 1990.11Preliminary study�Optimization of spiral vortex blood pump, Artificial Heart 3, Chapter 13, pp. 107-114, Umexu et al., 1990.12The Penn State Implantable artificial heart: Current status, Artificial Heart 3, Chapter 24, pp. 205-212, Snyder et al., 1990.13Tohoku University TH-7B pneumatically Driven sac-type ventricular assist device System and newly developed vibrating electromagnetic pump, Artificial Heart 3, p. 345, Unknown, 1990.14Total Artificial Heart, Management of End-Stage Heart Disease, Chapter 17, pp. 213-219, Kung, 1998.15Toward a totally implantable artificial heart: Development status at Cleveland Clinic, Artificial Heart 3, Chapter 18, pp. 147-164, Nakamura et al., 1990. Citada por Patente citante Fecha de presentaci�n Fecha de publicaci�n Solicitante T�tuloUS70668746 Ene 200427 Jun 2006Bay Innovation Group, LlcDevices and methods for blood flow assistanceUS717255112 Abr 20046 Feb 2007Scimed Life Systems, Inc.Cyclical pressure coronary assist pumpUS72734461 Nov 200425 Sep 2007Spence Paul AMethods, devices and systems for counterpulsation of blood flow to and from the circulatory systemUS753901630 Dic 200526 May 2009Intel CorporationElectromagnetically-actuated micropump for liquid metal alloy enclosed in cavity with flexible sidewallsUS769104610 Jul 20066 Abr 2010Pumpworks, Inc.Nondestructive fluid transfer deviceUS776449918 May 200927 Jul 2010Intel CorporationElectromagnetically-actuated micropump for liquid metal alloyUS776681320 Ago 20073 Ago 2010Spence Paul AMethods, devices and systems for counterpulsation of blood flow to and from the circulatory systemUS77668142 Mar 20053 Ago 2010Walsh Peter WilliamVessel or sac wall treatment and a cardiac assist deviceUS780310520 Abr 200728 Sep 2010Palmer ArthurMethod for making a blood pump and pumping bloodUS784608327 Feb 20077 Dic 2010L-Vad Technology, Inc.Left ventricle assist device (LVAD)US785059210 May 200514 Dic 2010Ppa Technologies AgDevice for the epicardial support and/or resumption of cardiac activityUS82465305 Abr 201021 Ago 2012Sullivan Paul JNondestructive fluid transfer deviceUS83885112 Dic 20115 Mar 2013Paul A. SpenceMethods, devices and systems for counterpulsation of blood flow to and from the circulatory systemUS201101249516 Jul 201026 May 2011Walsh Peter WilliamVessel or sac wall treatment and a cardiac assist deviceUS201102459169 Dic 20106 Oct 2011Libraheart Inc.Polymer valve and pulsatile conduit-type vad using the sameGirarImagen originalP�gina principal de Google - Sitemap - Descargas masivas de USPTO - Pol�tica de privacidad - Condiciones de servicio - Acerca de Google Patentes - Danos tu opini�nDatos proporcionados por IFI CLAIMS Patent Services©2012 Google