Patents Assigned to CardiacAssist, Inc.
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Publication number: 20220054730Abstract: 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: ApplicationFiled: November 3, 2021Publication date: February 24, 2022Applicant: CardiacAssist, Inc.Inventors: Patrick A. Kelly, Patrick E. Lutz, Robert G. Svitek, Jerry Stokes
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Publication number: 20210236329Abstract: 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: ApplicationFiled: April 6, 2021Publication date: August 5, 2021Applicant: CardiacAssist, Inc.Inventors: Robert G. Svitek, Kraig J. McEwen, Rebecca L. Baptiste
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Publication number: 20210128903Abstract: 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: ApplicationFiled: January 11, 2021Publication date: May 6, 2021Applicant: CARDIACASSIST, INC.Inventors: David Busch, John C. Marous III, Anthony S. McCoppin, Robert G. Svitek
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Patent number: 10993828Abstract: 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: GrantFiled: November 23, 2016Date of Patent: May 4, 2021Assignee: CardiacAssist, Inc.Inventors: Robert G. Svitek, Kraig J. McEwen, Rebecca L. Baptiste Davenport
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Publication number: 20210085844Abstract: 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: ApplicationFiled: November 18, 2020Publication date: March 25, 2021Applicant: CARDIACASSIST, INC.Inventors: Michael J. Linehan, Anthony McCoppin, John C. Marous, III, Robert G. Svitek
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Publication number: 20210077774Abstract: 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: ApplicationFiled: November 18, 2020Publication date: March 18, 2021Applicant: CARDIACASSIST, INC.Inventors: Patrick A. Kelly, Robert G. Svitek, Jerry Stokes
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Patent number: 10695473Abstract: 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: GrantFiled: March 31, 2016Date of Patent: June 30, 2020Assignee: 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
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Patent number: 10603422Abstract: 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: GrantFiled: October 2, 2015Date of Patent: March 31, 2020Assignee: CardiacAssist, Inc.Inventors: John C Marous, III, Robert G. Svitek, Jerry Stokes, Patrick A. Kelly
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Patent number: 10279101Abstract: 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: GrantFiled: September 29, 2017Date of Patent: May 7, 2019Assignee: CardiacAssist, Inc.Inventors: Patrick A. Kelly, Patrick E. Lutz, Robert G. Svitek, Jerry Stokes
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Patent number: 9782534Abstract: 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: GrantFiled: September 29, 2015Date of Patent: October 10, 2017Assignee: CardiacAssist, Inc.Inventors: Patrick A. Kelly, Patrick E. Lutz, Robert G. Svitek, Jerry Stokes
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Patent number: 9532898Abstract: 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: GrantFiled: July 16, 2012Date of Patent: January 3, 2017Assignee: CardiacAssist, Inc.Inventors: Robert G. Svitek, Kraig J. McEwen
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Patent number: 9446183Abstract: 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: GrantFiled: July 28, 2015Date of Patent: September 20, 2016Assignee: CardiacAssist, Inc.Inventors: Douglas E. Smith, Jennifer Wivholm, Robert G. Svitek, Cory J. Cortese, Robert Bollinger, Michael Garippa
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Patent number: 9168352Abstract: 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: GrantFiled: December 18, 2012Date of Patent: October 27, 2015Assignee: CardiacAssist, Inc.Inventors: Patrick A. Kelly, Patrick E. Lutz, Robert G. Svitek, Jerry Stokes
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Patent number: 8992408Abstract: 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: GrantFiled: September 5, 2013Date of Patent: March 31, 2015Assignee: CardiacAssist, Inc.Inventors: James A. Magovern, Scott B. Allison, Royce G. Barraclough, James R. Revenaugh, Douglas E. Smith, David H. J. Wang
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Patent number: 8979742Abstract: 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: GrantFiled: September 24, 2013Date of Patent: March 17, 2015Assignee: CardiacAssist, Inc.Inventors: Douglas E. Smith, Jennifer Wivholm, Robert G. Svitek, Cory J. Cortese, Robert Bollinger, Michael Garippa
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Patent number: 8622949Abstract: 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: GrantFiled: April 8, 2011Date of Patent: January 7, 2014Assignee: CardiacAssist, Inc.Inventors: Zafiris G. Zafirelis, Yih-Choung Yu, John C. Marous, III, Kirk A. Lehmann, Gregory A. Johnson
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Patent number: 8562519Abstract: 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: GrantFiled: December 31, 2009Date of Patent: October 22, 2013Assignee: CardiacAssist, Inc.Inventors: Douglas E. Smith, Jennifer Wivholm, Robert G. Svitek, Cory J. Cortese, Robert Bollinger, Michael Garippa
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Patent number: 8550973Abstract: 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: GrantFiled: January 9, 2006Date of Patent: October 8, 2013Assignee: CardiacAssist, Inc.Inventors: James A. Magovern, Scott B. Allison, Royce G. Barraclough, James R. Revenaugh, Douglas E. Smith, David H. J. Wang
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Publication number: 20130158338Abstract: 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: ApplicationFiled: December 18, 2012Publication date: June 20, 2013Applicant: CARDIACASSIST, INC.Inventor: CardiacAssist, Inc.
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Patent number: 8454549Abstract: 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: GrantFiled: January 20, 2011Date of Patent: June 4, 2013Assignee: CardiacAssist, Inc.Inventors: Zafiris G. Zafirelis, John C. Marous, III, Yih-Choung Yu, Kirk A. Lehmann, Greg A. Johnson