Patents Assigned to CardiacAssist, Inc.
  • Publication number: 20210236329
    Abstract: An extracorporeal blood cooling or heating circuit includes an intravenous catheter for withdrawing a patient's blood coupled to a combined pump/heat exchanger device. One or more sensors are provided upstream and/or downstream of the pump/heat exchanger device for measuring pressure, temperature, fluid flow, blood oxygenation, and other parameters, A controller is operative!}? coupled to the pump/heat exchanger device and the one or more sensors to control the speed of the pump inside the pump/heat exchanger device and regulate the blood temperature by controlling the operation of the heat exchanger. The combined pump/heat exchanger device includes a housing having at least one inlet and at least one outlet, a pump portion defining a blood circuit inside the housing, and a heat exchanger portion contained within the housing for selectively heating or cooling the blood.
    Type: Application
    Filed: April 6, 2021
    Publication date: August 5, 2021
    Applicant: CardiacAssist, Inc.
    Inventors: Robert G. Svitek, Kraig J. McEwen, Rebecca L. Baptiste
  • Publication number: 20210128903
    Abstract: A centrifugal blood pump includes a housing having a pumping chamber, an inlet having an inlet axis, and an outlet having an outlet axis. The inlet and the outlet are in fluid communication with the pumping chamber. The pump further includes an impeller rotatably disposed within the pumping chamber, and a strut connected to the housing at the inlet. The strut is connected to the housing at a circumferential position about the inlet axis such that a major axis of the strut and the outlet axis define a predetermined angle in a cross-sectional plane perpendicular to the inlet axis. The circumferential position of the strut relative the outlet axis reduces or eliminates damage to blood flowing around the strut.
    Type: Application
    Filed: January 11, 2021
    Publication date: May 6, 2021
    Applicant: CARDIACASSIST, INC.
    Inventors: David Busch, John C. Marous III, Anthony S. McCoppin, Robert G. Svitek
  • Patent number: 10993828
    Abstract: An extracorporeal blood cooling or heating circuit includes an intravenous catheter for withdrawing a patient's blood coupled to a combined pump/heat exchanger device. One or more sensors are provided upstream and/or downstream of the pump/heat exchanger device for measuring pressure, temperature, fluid flow, blood oxygenation, and other parameters. A controller is operatively coupled to the pump/heat exchanger device and the one or more sensors to control the speed of the pump inside the pump/heat exchanger device and regulate the blood temperature by controlling the operation of the heat exchanger. The combined pump/heat exchanger device includes a housing having at least one inlet and at least one outlet, a pump portion defining a blood circuit inside the housing, and a heat exchanger portion contained within the housing for selectively heating or cooling the blood.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: May 4, 2021
    Assignee: CardiacAssist, Inc.
    Inventors: Robert G. Svitek, Kraig J. McEwen, Rebecca L. Baptiste Davenport
  • Publication number: 20210085844
    Abstract: A connector has a hollow body having a first open end spaced apart from a second open end with a lumen extending between the first and second open ends. At least one channel extends through a sidewall of the body and is recessed from a terminal surface of the first open end. The first open end is sized to be received within an open end of a first tubing. When the first open end is partially inserted into the open end of the first tubing, the at least one channel and a terminal surface of the open end of the first tubing define an opening positioned so that fluid passes through the opening into or out of the lumen. When the first open end is fully inserted into the first tube, the at least one channel is covered by an inner surface of the first tubing to cover the opening.
    Type: Application
    Filed: November 18, 2020
    Publication date: March 25, 2021
    Applicant: CARDIACASSIST, INC.
    Inventors: Michael J. Linehan, Anthony McCoppin, John C. Marous, III, Robert G. Svitek
  • Publication number: 20210077774
    Abstract: A dual lumen coaxial cannula assembly includes a first infusion tube having a first elongate body defining a first lumen therethrough, the first infusion tube having a proximal end, a distal end, and a sidewall extending circumferentially therebetween. A second drainage tube is co-axially aligned with the first infusion tube and has a second elongate body with a second lumen defined by a space between the first infusion tube and the second drainage tube. The second drainage tube has a proximal end, a distal end, and a sidewall extending circumferentially therebetween. A connector is attached to the proximal end of the first infusion tube and the proximal end on the second drainage tube. The cannula assembly further includes a distal tip connected to the distal end of the first elongate body and made of a material having a lower hardness than a hardness of the first elongate body.
    Type: Application
    Filed: November 18, 2020
    Publication date: March 18, 2021
    Applicant: CARDIACASSIST, INC.
    Inventors: Patrick A. Kelly, Robert G. Svitek, Jerry Stokes
  • Patent number: 10695473
    Abstract: A system for assisting a patient's heart has a pump, an oxygenator, a holder having a pump receiving portion for removably receiving the pump and an oxygenator receiving portion for removably receiving the oxygenator, and a harness configured to surround at least a portion of a patient's torso. The holder is connected to the harness. The system further has a brace connected to at least a portion of the harness. The brace is configured to extend behind a back portion of a user's head and to support tubing connected to at least one of the pump and the oxygenator. A priming tray and wet-to-wet connector connecting the cardiac assist system to the cannula so are also disclosed.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: June 30, 2020
    Assignee: CardiacAssist, Inc.
    Inventors: Robert G. Svitek, Jerry Stokes, Patrick A. Kelly, Anthony McCoppin, Patrick A. Murawski, Travis Deschamps, Patrick E. Lutz, John C. Marous, III
  • Patent number: 10603422
    Abstract: A veno-arterial extracorporeal membrane oxygenation system includes a dual lumen drainage cannula configured for withdrawing blood from a patient's vasculature in a manner that provides a perfusion of oxygenated blood with reduced carbon dioxide content while unloading the left ventricle, with two points of access to the patient's vasculature. The dual lumen drainage cannula has a first drainage tube and a second drainage tube co-axially aligned with the first drainage tube. The first and second drainage tubes are fluidly coupled to a connector. A blood pump having a pump inlet is configured for fluidly connecting with the connector, while an oxygenator having an oxygenator inlet is configured for fluidly connecting with a pump outlet. An infusion cannula is configured for fluidly connecting with an oxygenator outlet for infusing oxygenated blood into a patient's bloodstream.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: March 31, 2020
    Assignee: CardiacAssist, Inc.
    Inventors: John C Marous, III, Robert G. Svitek, Jerry Stokes, Patrick A. Kelly
  • Patent number: 10279101
    Abstract: A dual lumen coaxial cannula assembly includes a first infusion tube having a first elongate body defining a first lumen therethrough and a second drainage tube co-axially aligned with the first infusion tube and having a second elongate body with a second lumen defined by a space between the first infusion tube and second drainage tube. A connector is removably attached to the first infusion tube and the second drainage tube for coupling the dual lumen coaxial cannula to an extracorporeal blood circuit. The first infusion tube and the second drainage tube include a plurality of infusion and drainage apertures, respectively, provided at the distal end and extending through the sidewall of the first infusion tube and the drainage tube, respectively.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: May 7, 2019
    Assignee: CardiacAssist, Inc.
    Inventors: Patrick A. Kelly, Patrick E. Lutz, Robert G. Svitek, Jerry Stokes
  • Patent number: 9782534
    Abstract: A dual lumen coaxial cannula assembly includes a first infusion tube having a first elongate body defining a first lumen therethrough and a second drainage tube co-axially aligned with the first infusion tube and having a second elongate body with a second lumen defined by a space between the first infusion tube and second drainage tube. A connector is removably attached to the first infusion tube and the second drainage tube for coupling the dual lumen coaxial cannula to an extracorporeal blood circuit. The first infusion tube and the second drainage tube include a plurality of infusion and drainage apertures, respectively, provided at the distal end and extending through the sidewall of the first infusion tube and the drainage tube, respectively.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: October 10, 2017
    Assignee: CardiacAssist, Inc.
    Inventors: Patrick A. Kelly, Patrick E. Lutz, Robert G. Svitek, Jerry Stokes
  • Patent number: 9532898
    Abstract: An extracorporeal blood cooling or heating circuit includes an intravenous catheter for withdrawing a patients blood coupled to a combined pump/heat exchanger device. One or more sensors are provided upstream and/or downstream of the pump/heat exchanger device for measuring pressure, temperature, fluid flow, blood oxygenation, and other parameters. A controller is operatively coupled to the pump/heat exchanger device and the one or more sensors to control the speed of the pump inside the pump/heat exchanger device and regulate the blood temperature by controlling the operation of the heat exchanger. The combined pump/heat exchanger device includes a housing having at least one inlet and at least one outlet, a pump portion defining a blood circuit inside the housing, and a heat exchanger portion contained within the housing for selectively heating or cooling the blood.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: January 3, 2017
    Assignee: CardiacAssist, Inc.
    Inventors: Robert G. Svitek, Kraig J. McEwen
  • Patent number: 9446183
    Abstract: A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: September 20, 2016
    Assignee: CardiacAssist, Inc.
    Inventors: Douglas E. Smith, Jennifer Wivholm, Robert G. Svitek, Cory J. Cortese, Robert Bollinger, Michael Garippa
  • Patent number: 9168352
    Abstract: A dual lumen coaxial cannula assembly includes a first infusion tube having a first elongate body defining a first lumen therethrough and a second drainage tube co-axially aligned with the first infusion tube and having a second elongate body with a second lumen defined by a space between the first infusion tube and second drainage tube. A connector is removably attached to the first infusion tube and the second drainage tube for coupling the dual lumen coaxial cannula to an extracorporeal blood circuit. The first infusion tube and the second drainage tube include a plurality of infusion and drainage apertures, respectively, provided at the distal end and extending through the sidewall of the first infusion tube and the drainage tube, respectively.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: October 27, 2015
    Assignee: CardiacAssist, Inc.
    Inventors: Patrick A. Kelly, Patrick E. Lutz, Robert G. Svitek, Jerry Stokes
  • Patent number: 8992408
    Abstract: A system for assisting the right heart of a patient includes a PA cannula adapted for insertion into a PA of a patient through the right internal jugular vein of the patient. The system includes a percutaneous RA cannula adapted for insertion into an RA of the patient. The system includes a blood pump disposed outside of the patient to which the RA cannula and the PA cannula are connected to provide right ventricular circulatory support to the patient without any left ventricular assist. A method for assisting the right heart of a patient includes the steps of inserting a PA cannula into a PA of a patient. There is the step of inserting an RA cannula into an RA of the patient. There is the step of connecting the RA cannula and the PA cannula to a blood pump disposed outside of the patient. There is the step of activating the blood pump to provide right ventricular circulatory support to assist the heart of the patient.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: March 31, 2015
    Assignee: CardiacAssist, Inc.
    Inventors: James A. Magovern, Scott B. Allison, Royce G. Barraclough, James R. Revenaugh, Douglas E. Smith, David H. J. Wang
  • Patent number: 8979742
    Abstract: A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: March 17, 2015
    Assignee: CardiacAssist, Inc.
    Inventors: Douglas E. Smith, Jennifer Wivholm, Robert G. Svitek, Cory J. Cortese, Robert Bollinger, Michael Garippa
  • Patent number: 8622949
    Abstract: A method of providing a pumping system for assisting a human patient's heart and providing a blood pump to be disposed outside the patient's body is disclosed. The blood pump has an inlet and an outlet. An inlet cannula is provided for insertion percutaneously into the vascular system of the patient, and is adapted to be placed in fluid communication with the blood pump inlet to provide blood to the blood pump. An outlet perfusion cannula is provided for insertion percutaneously into the vascular system of the patient, and is adapted to be placed in fluid communication with the blood pump outlet to provide blood to the patient's vascular system. The blood pump includes a control system to control the blood pump. The control system includes at least two control units for redundant control of the blood pump, and each control unit includes a watchdog for monitoring the control unit.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: January 7, 2014
    Assignee: CardiacAssist, Inc.
    Inventors: Zafiris G. Zafirelis, Yih-Choung Yu, John C. Marous, III, Kirk A. Lehmann, Gregory A. Johnson
  • Patent number: 8562519
    Abstract: A cannula for a patient includes an elongate body having a length of at least 70 cm and a channel extending through the body defining a wall. The cannula includes a wire embodied within at least a portion of the wall. The body has a proximal end, a distal end having a tip opening through which the channel extends and a plurality of side holes through the wall in proximity to the tip for unimpeded flow of blood at the distal end. The cannula includes a barbed fitting at the proximal end. The cannula includes a suture wing for securing the elongated body to the patient. A system for assisting a patient's heart. A method for assisting a patient's heart.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: October 22, 2013
    Assignee: CardiacAssist, Inc.
    Inventors: Douglas E. Smith, Jennifer Wivholm, Robert G. Svitek, Cory J. Cortese, Robert Bollinger, Michael Garippa
  • Patent number: 8550973
    Abstract: A system for assisting the right heart of a patient includes a PA cannula adapted for insertion into a PA of a patient through the right internal jugular vein of the patient. The system includes a percutaneous RA cannula adapted for insertion into an RA of the patient. The system includes a blood pump disposed outside of the patient to which the RA cannula and the PA cannula are connected to provide right ventricular circulatory support to the patient without any left ventricular assist. A method for assisting the right heart of a patient includes the steps of inserting a PA cannula into a PA of a patient. There is the step of inserting an RA cannula into an RA of the patient. There is the step of connecting the RA cannula and the PA cannula to a blood pump disposed outside of the patient. There is the step of activating the blood pump to provide right ventricular circulatory support to assist the heart of the patient.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: October 8, 2013
    Assignee: CardiacAssist, Inc.
    Inventors: James A. Magovern, Scott B. Allison, Royce G. Barraclough, James R. Revenaugh, Douglas E. Smith, David H. J. Wang
  • Publication number: 20130158338
    Abstract: A dual lumen coaxial cannula assembly includes a first infusion tube having a first elongate body defining a first lumen therethrough and a second drainage tube co-axially aligned with the first infusion tube and having a second elongate body with a second lumen defined by a space between the first infusion tube and second drainage tube. A connector is removably attached to the first infusion tube and the second drainage tube for coupling the dual lumen coaxial cannula to an extracorporeal blood circuit. The first infusion tube and the second drainage tube include a plurality of infusion and drainage apertures, respectively, provided at the distal end and extending through the sidewall of the first infusion tube and the drainage tube, respectively.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 20, 2013
    Applicant: CARDIACASSIST, INC.
    Inventor: CardiacAssist, Inc.
  • Patent number: 8454549
    Abstract: A pumping system for assisting a patient's heart includes a blood pump disposed outside the patient's body and having an inlet and an outlet. An inlet cannula is configured for insertion percutaneously into the vascular system of the patient, and in fluid communication with the blood pump inlet to provide blood to the blood pump. An outlet perfusion cannula is configured for insertion percutaneously into the vascular system of the patient, and in fluid communication with the blood pump outlet to provide blood to the patient's vascular system. A control system is provided to control the blood pump and includes at least two control units for redundant control of the blood pump. Each control unit includes a watchdog for monitoring the control unit. A variation of the pumping system includes a bidirectional cannula for insertion percutaneously into the vascular system of the patient and to extend into the patient's heart.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: June 4, 2013
    Assignee: CardiacAssist, Inc.
    Inventors: Zafiris G. Zafirelis, John C. Marous, III, Yih-Choung Yu, Kirk A. Lehmann, Greg A. Johnson
  • Publication number: 20110245582
    Abstract: A method of providing a pumping system for assisting a human patient's heart and providing a blood pump to be disposed outside the patient's body is disclosed. The blood pump has an inlet and an outlet. An inlet cannula is provided for insertion percutaneously into the vascular system of the patient, and is adapted to be placed in fluid communication with the blood pump inlet to provide blood to the blood pump. An outlet perfusion cannula is provided for insertion percutaneously into the vascular system of the patient, and is adapted to be placed in fluid communication with the blood pump outlet to provide blood to the patient's vascular system. The blood pump includes a control system to control the blood pump. The control system includes at least two control units for redundant control of the blood pump, and each control unit includes a watchdog for monitoring the control unit.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 6, 2011
    Applicant: CARDIACASSIST, INC.
    Inventors: Zafiris G. Zafirelis, John C. Marous, III, Yih-Choung Yu, Kirk A. Lehmann, Greg A. Johnson