Having Connecting Means To Allow Blood Flow Patents (Class 623/3.26)
  • Patent number: 9675738
    Abstract: A catheter pump includes an impeller and a drive shaft coupled with the impeller. The catheter pump includes a motor assembly coupled with the drive shaft. The motor assembly includes a motor housing having an opening through a wall of the motor housing and a flexible member disposed about the opening, the flexible member configured to engage a connection portion of a platform.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: June 13, 2017
    Assignee: TC1 LLC
    Inventors: Adam R. Tanner, Michael R. Butler
  • Patent number: 9629947
    Abstract: An axial flow blood pump comprises: an impeller (2) that rotates around an axis and is provided with axial flow blades on the peripheral surface thereof, a permanent magnet inside the impeller (2), and a dynamic bearing or a pivot bearing; a first casing (5) that surrounds the peripheral surface of the impeller (2) and is provided with an intake port (11); an annular fixed element (6) that generates a rotating magnetic field in the impeller (2) and can be fitted onto the outer surface of the first casing (5); an outlet port (12); a second casing (3) that is provided with guide vanes (diffusers) (31) in the inner surface thereof; and a socket member (4) that is fittably and securely mounted onto the outer peripheral surface of the second casing (3) and is provided with a joining portion that can join with the fixed element (6).
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: April 25, 2017
    Assignee: National University Corporation Kobe University
    Inventor: Takashi Yamane
  • Publication number: 20140371849
    Abstract: Embodiments of the disclosed technology are directed to a self-contained, totally implantable blood pump that replaces the whole heart. It is a small spherical device that encloses all of its blood propulsion dynamics. The dynamics are controlled by a built-in microcontroller that regulates the speed of the motor in response to hemodynamic changes like blood pressure fluctuations, level of body activity, and/or posture. The hemodynamic changes are detected using a plurality of sensors disposed around the body. An implantable transcutaneously rechargeable battery provides power to the microcontroller, motor and/or sensors.
    Type: Application
    Filed: June 9, 2014
    Publication date: December 18, 2014
    Inventors: Wilmo C. Orejola, Cedric A. Orejola
  • Patent number: 8858489
    Abstract: Various embodiments of the present invention provide a conduit device including an attaching device configured for defining a helical pathway through a tissue wall and complementary ring in cooperation for securing the device within an aperture defined in the tissue wall. Some embodiments of the present invention further provide a system for implanting a conduit device in a tissue wall. More specifically, some embodiments provide a system including a coring device for defining an aperture in a tissue by removing and retaining a tissue core and securely implanting a conduit device therein so as to provide fluid communication between a first and second surface of the tissue wall via the conduit device.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: October 14, 2014
    Assignees: Emory University, Georgia Tech Research Corporation
    Inventors: Thomas A. Vassiliades, Ajit Yoganathan, Jorge Hernan Jimenez
  • Publication number: 20140067057
    Abstract: In one general aspect, a cuff for attachment to a heart includes an attachment component configured to engage a blood pump to attach the cuff to the blood pump and a sewing ring for attachment to the heart. The sewing ring is coupled to the attachment component, and the attachment component and the sewing ring each define a central opening configured to admit an inflow cannula of a blood pump. The sewing ring comprises a member that provides rigidity to flatten a portion of a myocardium of the heart when the cuff is attached to the heart.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 6, 2014
    Inventors: Justin Aron Callaway, Cori G. Pierce, Julien Duhamel, Kevin Bourque
  • Patent number: 8403823
    Abstract: A ventricular apex connector for quick connection and disconnection of an inflow tube of a ventricular assist device, comprising a sewing ring, a cylindrical ring, gripping pins, a spring ring and a sealing O-ring is provided. The cylindrical ring defines two openings, diametrically opposed to each other, in its walls. Gripping pins, comprising rods with gripping pads, are placed in the openings in the cylindrical ring so that the gripping pads are at rest within the inner circumference of the cylindrical ring. The spring ring is placed around the cylindrical ring and the rods of the gripping pads, which extend out of the outer wall of the cylindrical ring, are welded to the spring ring. The gripping pins are thus biased towards each other by the force of the spring ring. When the spring ring is squeezed, at points away from the gripping pin connection points, the deformation of the spring ring causes the gripping pads to be pulled out towards the inner wall of the cylindrical ring.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: March 26, 2013
    Assignee: Heartware Inc.
    Inventors: Long Sheng Yu, Peter Piferi, Steven M. Parnis
  • Publication number: 20130066421
    Abstract: A blood pump is implantable within the vasculature, such as within the pulmonary artery. The pump may project through a native valve such as the pulmonary valve. In use, the pump opposes retrograde flow and thus acts as a replacement for the native valve. The pump may be an axial flow pump having a generally tubular housing adapted to fit within the space proximal to the bifurcation of the pulmonary artery while projecting only slightly proximally of the annulus of the native pulmonary valve.
    Type: Application
    Filed: May 11, 2012
    Publication date: March 14, 2013
    Inventors: Martin Strueber, Lisa Ensz
  • Patent number: 8328751
    Abstract: The present invention is thus directed to methods and apparatus for decreasing pressure in a first portion of a vessel of the cardiac structure of a patient by implanting a shunt communicating with an area outside said first portion, whereby a volume of blood sufficient to reduce pressure in said first portion is released. Preferably, the first portion comprises the left ventricle and the pressure reduced is the end diastolic pressure, which is accomplished by having the shunt communicate with the left ventricle so a small volume of blood is released from the left ventricle to reduce the end diastolic pressure.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: December 11, 2012
    Assignee: V-Wave Ltd.
    Inventors: Gad Keren, Randy Kesten
  • Patent number: 8235933
    Abstract: The present invention is directed to methods and apparatus for decreasing pressure in the left atrium of a patient by implanting a valved shunt through the atrial septum, whereby a volume of blood sufficient to reduce pressure in said left atrium is released to the right atrium.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: August 7, 2012
    Assignee: V-Wave Ltd.
    Inventors: Gad Keren, Randy Kesten
  • Patent number: 8177838
    Abstract: The disclosure relates to an artificial heart implant comprising a blood pump with a pump drive, a controller for controlling and regulating the pump drive, and an electrode that is connected to the controller and is used for detecting electrical quantities on the patient's heart. The controller controls the pump drive in accordance with the signals detected by the electrode.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: May 15, 2012
    Assignee: Deutsches Zentrum fur Luft-und Raumfahrt e.V.
    Inventors: Bernhard Vodermayer, Thomas Schmid
  • Patent number: 8157721
    Abstract: An artificial heart pump system is provided independently with a controlling processor for controlling an operation status of a blood pump so as to perform in a preset condition and with an observing processor for controlling a display unit displaying an operation status and an operation condition of the blood pump. In addition, a memory device is mounted in an outside-the-body type battery pack included in the artificial heart pump system; data such as pump data, event log or the like is stored therein; and data are collected and managed automatically by a battery charger when charging the battery charger for a daily performance. Further, an interface unit of an artificial heart pump is proposed where a user can confirm displayed contents of the controller without exposing the controller externally.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: April 17, 2012
    Assignee: Terumo Kabushiki Kaisha
    Inventor: Naoya Sugiura
  • Publication number: 20120059459
    Abstract: This document relates to materials and methods for circulatory bypass of a ventricle in the heart of a mammal. For example, materials and methods for bypassing a permanently or temporarily impaired left ventricle in the heart of a mammal (e.g., a human) are provided.
    Type: Application
    Filed: May 11, 2010
    Publication date: March 8, 2012
    Applicant: MAYO FOUNDATION FOR MEDICAL EDUCATION AND RESEARCH
    Inventors: Samuel J. Asirvatham, Soon J. Park, Paul A. Friedman, Charles J. Bruce, Sudhir S. Kushwaha
  • Patent number: 8091556
    Abstract: Methods and apparatus for decreasing cardiac pressure in a patient by implanting a shunt communicating with an area outside a first portion, whereby a volume of blood sufficient to reduce pressure in a first portion is released. Preferably, the end diastolic pressure in the left ventricle is reduced, which is accomplished by having the shunt communicate with the left ventricle so a small volume of blood is released from the left ventricle. Most preferably, the shunt selectively permits flow when a pressure differential between the left ventricle and another chamber of a heart above a threshold pressure, so that shunting is prevented during left ventricular systole, or, alternatively, selectively permits flow when a pressure differential between the left ventricle and another chamber of a heart is between a lower threshold and a higher threshold. In certain embodiments a semi-passive check-valve is controlled and actuated by an external signal.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: January 10, 2012
    Assignee: V-Wave Ltd.
    Inventors: Gad Keren, Randy Kesten
  • Patent number: 8075617
    Abstract: A device for connection between a heart prosthesis and a person's natural auricles includes a structure for joining to the natural auricles with individual suture attachments mounted so as to be free in rotation and movable.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: December 13, 2011
    Assignee: Carmat
    Inventors: Jean-Marc Parquet, Alain Carpentier, Pascal Bareau, Antoine Capel
  • Patent number: 7967858
    Abstract: Device for rapid connection between a totally implantable heart prosthesis and natural articles. According to the invention, said prosthesis comprises: fastening means (16, 25) for fastening an end of one of the lunettes (2, 3) to the other lunette (3, 2), said fastening means being able to permit folding of said lunettes relative to each other; guide means (10, 11, 20, 21) for guiding said lunettes relative to each other before and during fastening and also during folding; and snap-fit means (19, 26) for engaging said lunettes on each other in the operating position corresponding to the end of said folding.
    Type: Grant
    Filed: June 11, 2007
    Date of Patent: June 28, 2011
    Assignee: Carmat
    Inventors: Jean-Marc Parquet, Alain Carpentier
  • Patent number: 7824358
    Abstract: A heart assist device connection system comprises an inflow connector in fluid-tight communication with an inflow section of a heart assist device. The connector is configured to be releasably connected to an inlet extension inserted into a patient's ventricle. The connector has one or more recesses configured to match a protrusion on the inlet extension. The system also comprises an outflow connector in fluid communication with an outflow section of the heart assist device. The outflow connector is configured to be releasably connected to a conduit attached-to the patient's vasculature.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: November 2, 2010
    Assignee: Thoratec Corporation
    Inventors: Christopher J. Cotter, Olivier C. Bataille
  • Publication number: 20100082099
    Abstract: The disclosure relates to an artificial heart implant comprising a blood pump with a pump drive, a controller for controlling and regulating the pump drive, and an electrode that is connected to the controller and is used for detecting electrical quantities on the patient's heart. The controller controls the pump drive in accordance with the signals detected by the electrode.
    Type: Application
    Filed: July 27, 2007
    Publication date: April 1, 2010
    Inventors: Bernhard Vodermayer, Thomas Schmid
  • Publication number: 20100016960
    Abstract: 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 provides a vascular graft that has a first end that is sized and configured to couple to a non-primary blood vessel and a second end that is fluidly coupled to a pump to conduct blood between the pump and the non-primary blood vessel. An outflow conduit is also provided that has a first end sized and configured to be positioned within the same or different blood vessel, whether primary or non-primary, through the vascular graft. The outflow conduit is fluidly coupled to the pump to conduct blood between the pump and the patient. The vascular graft may be connected to the blood vessel subcutaneously to permit application of the extracardiac pumping system in a minimally-invasive procedure.
    Type: Application
    Filed: September 23, 2009
    Publication date: January 21, 2010
    Inventor: Steven F. Bolling
  • Patent number: 7628808
    Abstract: For connecting a cardiac biventricular assist means including a dual-chamber pumping device, and an electrically powered compressor means provided between the two chambers (12, 15) a partially flexible one-part or multi-part adapter (20) is provided with two through-passageways (21, 22; 34, 35) each separate from the other, said adapter being securely held, on the one hand, in a port (4a) in the apical portion of the septum (4) and, on the other, in a port (2a) in/at the apex of the left ventricle (2) so that the through-passageway (22; 35) extending into the left ventricle (2) is connected directly or by means of a first flexible tube (11) to the inlet (12a) of the one chamber (12) and the other through-passageway (21; 34) extending into said right ventricle (3) is connected directly or by means of a second flexible tube (14) to the inlet (15a) of the other chamber (15).
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: December 8, 2009
    Assignee: Deutsches Zentrum fur Luft und Raumfahrt E.V.
    Inventors: Thomas Schmid, Wolfgang Schiller
  • Patent number: 7338521
    Abstract: A low profile pump inlet for an implantable blood pump is disclosed. The low profile pump inlet has an inflow diffuser for attachment to a conduit bearing an inflow of a fluid such as blood and an outflow orifice in fluid connection with the diffuser. The outflow orifice is configured to direct the fluid from the diffuser into a pump such as an implantable blood pump. The low profile pump inlet helps to suppress the effects of upstream pipe bends on the blood traveling through the inlet. The inlet thus provides a flow having a substantially uniform velocity profile into the blood pump.
    Type: Grant
    Filed: June 13, 2002
    Date of Patent: March 4, 2008
    Assignee: World Heart, Inc.
    Inventors: James F. Antaki, Jed C. Ludlow, Scott D. Miles
  • Patent number: 7226476
    Abstract: A prosthesis for large blood vessels includes a main conduit. At least one tract of the main conduit is subdivided into a plurality of smaller conduits located parallel to one another.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: June 5, 2007
    Assignee: G.A.M.A.-H.S. S.r.L.
    Inventor: Gioacchino Coppi
  • Patent number: 7090659
    Abstract: Systems and methods for providing cardiac support provide a cannula body having an inlet and an outlet. The cannula includes a preformed bend sized and configured to extend within the heart chamber between the inlet and the outlet. The cannula is inserted through a first valve into a heart chamber and through a second valve out of the heart chamber. Blood is drawn into the cannula through the inlet and discharged from the cannula through the outlet, thereby bypassing the heart chamber.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: August 15, 2006
    Assignee: A-Med Systems, Inc.
    Inventors: Walid N Aboul-Hosn, William R Kanz, Roland W Zieglier, Kelly J McCrystle, Rosalind Castor, Allan deDios
  • Patent number: 7022100
    Abstract: An improved intravascular blood pump system (10) and related methods involving the broad inventive concept of equipping the intravascular blood pump (12) with guiding features such that the intravascular blood pump can be selectively positioned at a predetermined location within the circulatory system of a patient.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: April 4, 2006
    Assignee: A-Med Systems, Inc.
    Inventors: Walid N Aboul-Hosn, William R Kanz, Bruce Baker
  • Patent number: 6974436
    Abstract: The present invention relates to systems and methods for transporting fluid between different locations within a body cavity and, in one particular application, systems and methods for transporting fluids to maintain at least partial blood flow through a protected blood flow path within the right and/or left side of the heart during surgery. The protected blood flow path may be established by positioning one or more conduits within at least a portion of the right and/or left sides(s) of the heart. At least partial blood flow may be maintained through the protected blood flow path by the pumping action of a blood pump disposed within the conduit.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: December 13, 2005
    Assignee: A-Med Systems, Inc.
    Inventors: Walid N. Aboul-Hosn, William R. Kanz, James W. Cartwright, Damien Shulock, Kelly J. McCrystle
  • Publication number: 20040236170
    Abstract: The present invention is a unique method for the surgical introduction and implantation in-vivo of a ventricular assist device and the sutureless juncture of prepared inflow and outflow conduits extending from the ventricular assist device to the interior spatial volume of a chosen blood vessel and/or a cardiac chamber within a living subject. The present method employs an introducer assembly which serves as the means for placement of the inflow and outflow conduits of the implanted ventricular assist device.
    Type: Application
    Filed: February 25, 2004
    Publication date: November 25, 2004
    Inventor: Ducksoo Kim
  • Publication number: 20040171905
    Abstract: A ventricular apex connector for quick connection and disconnection of an inflow tube of a ventricular assist device, comprising a sewing ring, a cylindrical ring, gripping pins, a spring ring and a sealing O-ring is provided. The cylindrical ring defines two openings, diametrically opposed to each other, in its walls. Gripping pins, comprising rods with gripping pads, are placed in the openings in the cylindrical ring so that the gripping pads are at rest within the inner circumference of the cylindrical ring. The spring ring is placed around the cylindrical ring and the rods of the gripping pads, which extend out of the outer wall of the cylindrical ring, are welded to the spring ring. The gripping pins are thus biased towards each other by the force of the spring ring. When the spring ring is squeezed, at points away from the gripping pin connection points, the deformation of the spring ring causes the gripping pads to be pulled out towards the inner wall of the cylindrical ring.
    Type: Application
    Filed: March 12, 2004
    Publication date: September 2, 2004
    Applicant: HeartWare, Inc, (a Delaware Corporation)
    Inventors: Long Sheng Yu, Peter Piferi, Steven M. Parnis
  • Patent number: 6761700
    Abstract: An extracorporeal vascular conduit for circulating blood outside a patient's body over an extended period of time in a manner that minimizes risk of thrombosis and complement activation and maximizes the ability of a patient to be ambulatory during recovery stages. The inventive vascular conduit comprises a first biocompatible material and a second synthetic material that is employed over a portion of the biocompatible material that extends outside the patient's body when is use. The majority of the portion that extends within the patient's body remains uncoated. A third synthetic material is applied around the conduit near the distal end of the second coating material of the catheter to permit a physician to secure the catheter to the patient's skin to minimize relative movement.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: July 13, 2004
    Assignee: Orqis Medical Corporation
    Inventors: Laksen Sirimanne, Anthony Viole
  • Publication number: 20040082992
    Abstract: An orthotopic total artificial heart for replacing the human heart comprising a new design of two assembled blood chambers with an original layout between themselves and between their inlet and outlet ports. Such design enables a significantly better space utilization inside the anterior mediastinum than the prior art; realizing the required anatomical fit.
    Type: Application
    Filed: June 26, 2003
    Publication date: April 29, 2004
    Inventor: Juan M. Giambruno
  • Publication number: 20040054251
    Abstract: 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) (12) to assist circulation. LVAS comprises a receptacle (housing) (4) provided with an inlet (3) and an outlet (5) The pump inflow (3) is connected to the left atrium and the pump outflow to the descending thoracic aorta (5,7) and a pulsating external pneumatic unit (8).
    Type: Application
    Filed: December 13, 2002
    Publication date: March 18, 2004
    Inventor: Domingo Santo Liotta
  • Publication number: 20040024285
    Abstract: A blood pump having a pump housing and an impeller disposed in the housing and driven by an electric drive includes at least two connection devices directly disposed at the housing for connection to an artery outside the heart such as for example a suture ring or a vascular prosthesis and configured in such a manner to realize a direct connection of the artery to the pump housing, and wherein a pump conduit can be implanted into the aorta ascendens for relieving the left ventricle and in the truncus pulmonalis or into the pulmonalis furcation for reliving the right cardiac ventricle and other blood vessels for improving the blood circulation or elevating the pressure in a certain vascular section.
    Type: Application
    Filed: June 20, 2003
    Publication date: February 5, 2004
    Inventor: Helmut Muckter
  • Patent number: 6669624
    Abstract: A balloon is positionable in the patient's descending aorta. The balloon includes a balloon catheter and two pressure sensors that electrically couple to an extra-corporeal controller. The balloon itself also couples pneumatically to the extra-corporeal controller. An extra-corporeal pump electrically couples to the extra-corporeal controller, the pump having an outlet connectable to the patient's infra-diaphragmatic The pump inlet is connectable via a cannula to the patient's supra-diaphragmatic artery. artery. A doctor inserts the balloon into the descending aorta, and positions the balloon near the level of the patient's diaphragm. A balloon catheter, coupled to the extra-corporeal controller, inflates and deflates the balloon. An electrocardiogram ECG and proximal aortic blood pressure, measured in the upper arterial compartment via a lumen in the balloon catheter, serve as inputs to cycle the balloon synchronously with the heartbeat.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: December 30, 2003
    Inventor: O. Howard Frazier
  • Publication number: 20030233144
    Abstract: A low profile pump inlet for an implantable blood pump is disclosed. The low profile pump inlet has an inflow diffuser for attachment to a conduit bearing an inflow of a fluid such as blood and an outflow orifice in fluid connection with the diffuser. The outflow orifice is configured to direct the fluid from the diffuser into a pump such as an implantable blood pump. The low profile pump inlet helps to suppress the effects of upstream pipe bends on the blood traveling through the inlet. The inlet thus provides a flow having a substantially uniform velocity profile into the blood pump.
    Type: Application
    Filed: June 13, 2002
    Publication date: December 18, 2003
    Inventors: James F. Antaki, Jed C. Ludlow, Scott D. Miles
  • Patent number: 6547753
    Abstract: Pulsatile blood flow in a heart-lung machine is accomplished by pumping blood into a bladder at a constant rate, and cyclically emptying the bladder into aortic line of the heart-lung machine either by means of the bladder's own elasticity or by a mechanical compression mechanism which can be programmed to simulate the human heartbeat.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: April 15, 2003
    Assignee: Medtronic, Inc.
    Inventors: Sean D. Plunkett, Henry W. Palermo
  • Publication number: 20020128709
    Abstract: A blood pump intended to be carried by a freely moving patient uses perpendicular magnetic and electrical fields to propel blood. A rod mounted coaxially inside a tube has electrodes in blood contact for establishing a radial electric field, and an inductor having windings parallel to the axis of the tube is used to establish a circumferential magnetic field. To avoid the evolution of gas at the electrode surfaces the magnetic and electric fields are periodically reversed, and the electrodes are made to have very high surface areas. The blood pump is powered by batteries or fuel cells (or a combination of both) to provide long service between recharging and to reduce the weight carried by the patient.
    Type: Application
    Filed: December 4, 2001
    Publication date: September 12, 2002
    Inventor: Benjamin David Pless
  • Publication number: 20020111577
    Abstract: An extracorporeal vascular conduit for circulating blood outside a patient's body over an extended period of time in a manner that minimizes risk of thrombosis and complement activation and maximizes the ability of a patient to be ambulatory during recovery stages. The inventive vascular conduit comprises a first biocompatible material and a second synthetic material that is employed over a portion of the biocompatible material that extends outside the patient's body when is use. The majority of the portion that extends within the patient's body remains uncoated. A third synthetic material is applied around the conduit near the distal end of the second coating material of the catheter to permit a physician to secure the catheter to the patient's skin to minimize relative movement.
    Type: Application
    Filed: February 9, 2001
    Publication date: August 15, 2002
    Inventors: Laksen Sirimanne, Anthony Viole
  • Publication number: 20020095210
    Abstract: A connector for connecting a blood processing device to vascular tissue includes a vascular tissue connecting element that is suturable to a portion of the cardiovascular system for providing a flow connection. A junction ring is affixed to the vascular tissue connecting portion in order to form a substantially shape retaining connecting element. A locking ring for locking the junction ring to a blood processing device includes a coupling element configured to engage a port on the blood processing device so that rotation of the locking ring draws the junction ring to the port and locks the junction ring into a sealing relationship with the port. The locking ring is freely rotatable about the junction ring so that the locking ring can be rotated to lock the junction ring to the port without twisting the vascular tissue connecting element.
    Type: Application
    Filed: January 16, 2001
    Publication date: July 18, 2002
    Inventors: Michael T. Finnegan, Long S. Yu
  • Publication number: 20020072698
    Abstract: A blood pumping device includes a receptacle for receiving blood and having a non-valved inlet and outlet openings coupled to an aorta and the femoral artery. The receptacle includes a surface having a peripheral portion coupled to a peripheral portion of a diaphragm, and having a port coupled to a pump. The pump may shrink the diaphragm to draw the blood into the receptacle and may expand the diaphragm to pump the blood in the chamber of the receptacle out of the inlet opening and the outlet opening of the receptacle and into the aorta and the femoral artery of the patient.
    Type: Application
    Filed: January 15, 2002
    Publication date: June 13, 2002
    Inventors: Jih Chung Chiang, Chin Sheng Tung, Kevin Kuo Tsai Cheng, Shih Hsiung Chen, Tzu Min Kao, Jeng Wei, Pong Jeu Lu
  • Patent number: 6355010
    Abstract: Cooled and oxygenated blood is shunted from the heart or proximal aorta into the open ends of intercostal arteries severed during thoracoabdominal aortic surgery to prevent or minimize the effects of spinal ischemia. This cooled perfusion can be accomplished with a variety of perfusion assembly. For instance, a single vessel perfusion assembly can be employed to shunt the oxygenated blood from the heart or aorta to the lumen of a single intercostal artery. Cooled perfusion can also be performed with a branched multiple vessel perfusion assembly, which includes a branched conduit comprising a common portion and branch portions. The arterial perfusion assembly further comprises an inflow cannula formed at the end of the common portion and a plurality of outflow cannulae formed at the respective ends of the branch portions. The inflow cannula is configured to be inserted through the wall of the aorta, and the outflow cannulae are configured to be inserted within the open ends of the severed intercostal arteries.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: March 12, 2002
    Assignee: CoAxia, Inc.
    Inventor: Denise R. Barbut
  • Patent number: 6319231
    Abstract: A medical connector for connecting a cardiac assist device to vascular tissue includes a base connector adapted to be attached to the cardiac assist device and a vascular tissue connector adapted to be attached to the vascular tissue. A retaining ring holds the base connector to the vascular tissue connector. The medical connector also includes an alignment feature and an engagement feature, each defined by a portion of either the base connector or the vascular tissue connector and a portion of the retaining ring. The alignment feature causes the vascular tissue connector to axially self-align with the base connector. The engagement feature causes the retaining ring to move first into a biased position and then to snap into engagement when the vascular tissue connector attaches to the base connector in an axially-oriented motion.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: November 20, 2001
    Assignee: Abiomed, Inc.
    Inventor: William B. Andrulitis
  • Publication number: 20010041934
    Abstract: An artificial heart has a driving section, a nozzle section, a pump section for insertion into a ventricle of a human heart, and a sealing section forming a seal for a driving shaft extending from the driving section for driving the pump section. A sealing liquid chamber filled with a sealing liquid is formed around the driving shaft between the sealing mechanism and the driving section. The sealing liquid in the sealing liquid chamber maintains the sealing mechanism in a liquid-tight state and lubricates the sealing mechanism, whereby blood is prevented from entering the driving section. Even if blood happens to enter the driving section, the blood is mixed with the sealing liquid and does not coagulate. Thus, the operation of the artificial heart is not suppressed.
    Type: Application
    Filed: June 12, 2001
    Publication date: November 15, 2001
    Applicant: Sun Medical Technology Research Corporation; NOK Corporation; Seiko Epson Corporation
    Inventors: Kenji Yamazaki, Toshio Mori, Haruo Iiyama, Shunichi Yamazaki, Nobutaka Ito, Osami Miyao, Masanori Hori, Yukio Iwasaki, Hitoshi Adachi, Kouji Higuchi