Blood perfusion system
First Claim
1. An extracorporeal blood perfusion system for receiving venous blood from a patient and for returning oxygenated blood to the patient in a cardiopulmonary bypass procedure, comprising:
- a disposable assembly including a cartridge and a plurality of interconnected tubing lines, the cartridge having a plurality of internal fluid passageways, wherein a first of the tubing lines is fluidly interconnected with at least one of the plurality of fluid passageways and wherein the disposable assembly defines a blood circuit for receiving venous blood from the patient and transferring oxygenated blood to the patient in a cardiopulmonary bypass procedure; and
a control unit having a component interface region, the component interface region including a cartridge interface region for operatively interfacing with the cartridge, and a first pump for operatively interfacing with a the blood circuit, wherein the venous blood is pumped through the blood circuit by the first pump.
1 Assignment
0 Petitions
Accused Products
Abstract
An extracorporeal blood perfusion system includes a disposable assembly and a control unit having a control interface region. The interface region includes pump assemblies for selective pumping of venous blood, arterial blood, cardioplegia solution, suctioned blood and blood removed from the left ventricle. Valve assemblies control the flow of fluids through the assembly and to/from the patient and sensors monitor various fluid parameters including temperature and pressure within the various fluid circuits. The user interface is a functional screen interface for effecting the operation of the control unit and valve assemblies. The screen interface may be a touch screen having objects that corresponds to the component interface region. The display may be selectively controlled to provide graphic depictions of disposable assembly components with corresponding narrative instructions.
399 Citations
101 Claims
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1. An extracorporeal blood perfusion system for receiving venous blood from a patient and for returning oxygenated blood to the patient in a cardiopulmonary bypass procedure, comprising:
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a disposable assembly including a cartridge and a plurality of interconnected tubing lines, the cartridge having a plurality of internal fluid passageways, wherein a first of the tubing lines is fluidly interconnected with at least one of the plurality of fluid passageways and wherein the disposable assembly defines a blood circuit for receiving venous blood from the patient and transferring oxygenated blood to the patient in a cardiopulmonary bypass procedure; and
a control unit having a component interface region, the component interface region including a cartridge interface region for operatively interfacing with the cartridge, and a first pump for operatively interfacing with a the blood circuit, wherein the venous blood is pumped through the blood circuit by the first pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20)
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13. An extracorporeal blood perfusion system for use in receiving venous blood from a patient and for returning oxygenated blood to the patient, comprising:
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a disposable assembly including a cartridge and a plurality of interconnected tubing lines, the disposable assembly defining a blood circuit for receiving venous blood from the patient and transferring oxygenated blood to the patient and a cardioplegia circuit for transferring a cardioplegia solution to the patient;
a control unit having a component interface region including a cartridge interface region for operatively interfacing with the cartridge; and
a first pump for controlling the flow of venous blood through a first tubing loop comprising the blood circuit, and a second pump for controlling the flow of cardioplegia solution through a second tubing loop comprising the cardioplegia circuit, wherein the second tubing loop is fluidly interconnected at each end thereof to the cartridge.
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21. An extracorporeal blood perfusion system for use in receiving venous blood from a patient'"'"'s heart and for transferring oxygenated blood back to the patient, comprising:
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a disposable assembly including a reservoir, an oxygenator and a plurality of tubing lines, wherein a first tubing line is connected for transferring venous blood from the patient to the reservoir, and a second tubing line is connected for transferring oxygenated blood to the patient; and
a control unit having a component interface panel including a clamp assembly for controlling the rate of transfer of the venous blood through the first tubing line to the reservoir. - View Dependent Claims (22, 23, 24, 26, 27, 29, 30, 31, 32)
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25. An extracorporeal blood perfusion system for use in receiving venous blood from a patient and returning oxygenated blood to the patient, comprising:
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a disposable assembly including a cartridge and a plurality of tubing lines, the disposable assembly defining at least a blood circuit for receiving venous blood from the patient and returning oxygenated blood to the patient and a cardioplegia circuit for transferring a cardioplegia solution to the patient; and
a control unit having a component interface panel comprising a cartridge interface region operatively interfacing with the cartridge, and including a first pressure sensor for monitoring a fluid pressure within the blood circuit, and a second pressure sensor for monitoring a fluid pressure within the cardioplegia circuit; and
first and second pumps, the first pump being configured to control a flow rate of the oxygenated blood in the blood circuit, and the second pump being configured to at least partially control a flow rate of the cardioplegia solution in the cardioplegia circuit.
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28. An extracorporeal blood perfusion system for use in receiving blood from a patient'"'"'s heart and for transferring the blood back to the patient comprising:
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a disposable assembly including a cartridge and a plurality of tubing lines, the disposable assembly defining a blood circuit for receiving blood from the patient and for transferring the blood back to the patient, the cartridge including a plurality of internal passageways and at least one reservoir containing a cardioplegia solution, the at least one reservoir being configured to be interconnectable to the cartridge to flow the cardioplegia solution into at least one of the plurality of fluid passageways of the cartridge; and
a control unit having a cartridge interface region for operatively interfacing with the cartridge, the cartridge interface region having at least one sensor configured for sensing one of a pressure and temperature of a fluid flowing through the at least one fluid passageway of the cartridge.
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33. An extracorporeal blood perfusion system for use in receiving venous blood from a patient and returning oxygenated blood to the patient, comprising:
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a disposable assembly including a plurality of fluid channels, the disposable assembly defining a blood circuit for receiving venous blood from the patient and returning oxygenated blood to the patient, the plurality of fluid channels including a first fluid channel fluidly interconnected to the blood circuit, the first fluid channel being at least partially defined by a first tubing line, and a second fluid channel being at least partially defined by a second tubing line, the first and second fluid channels being fluidly interconnected to a third fluid channel; and
a control unit including a component interface region comprising a first pump connected for operatively interfacing with the first tubing line, wherein oxygenated blood is pumped through the first tubing line by the first pump, and a second pump connected for operatively interfacing with the second tubing line, the second pump being configured to pump a cardioplegia solution through the second tubing line, the control unit being configured such that a volumetric ratio of the cardioplegia solution and the oxygenated blood is selectively established in the third fluid channel by control of the first and second pumps. - View Dependent Claims (34, 35, 36, 38, 39, 40)
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37. An extracorporeal blood perfusion system for receiving venous blood from a patient and transferring oxygenated blood to the patient, comprising:
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a disposable assembly including a cartridge and a plurality of tubing lines, the disposable assembly defining a blood circuit for receiving venous blood from the patient and transferring oxygenated blood to the patient, and a blood recovery circuit for receiving at least one of autologous blood from the patient and vented blood from a left ventricle of the patient; and
a control unit having a component interface region configured for controlling the flow of fluids in each of the blood and blood recovery circuits.
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41. An extracorporeal blood perfusion system for use in receiving venous blood from a patient and transferring oxygenated blood to the patient, comprising:
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a disposable assembly defining a plurality of fluid circuits, including a blood circuit for receiving venous blood from the patient and transferring oxygenated blood to the patient;
a control unit having a component interface region for operatively interfacing with the disposable assembly, the component interface region including a flow controller to control the rate of flow of fluids through a first of the plurality of fluid circuits; and
a user interface, operatively interconnected with the flow controller, including a display configured to be selectively controllable to display an object that provides a functional interface for user control over the operation of the flow controller. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. An extracorporeal blood perfusion system for use in receiving venous blood from a patient and transferring oxygenated blood to the patient, comprising:
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a disposable assembly defining a plurality of fluid circuits, including a blood circuit for receiving venous blood from the patient and transferring oxygenated blood to the patient;
a control unit including a component interface region for operatively interfacing with the disposable assembly, the component interface region including at least one sensor configured to operatively interface with one of the plurality of fluid circuits to monitor a first fluid parameter corresponding with a fluid flowing through the one fluid circuit; and
a user interface operatively interconnected with the component interface region and configured to display a value corresponding with the monitored first parameter and to provide a user alert when the monitored first parameter is outside of a predetermined range. - View Dependent Claims (52, 53, 54, 55, 56, 57, 59, 60, 61, 62, 63, 64, 65, 66, 67, 69)
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58. An extracorporeal blood perfusion system, comprising:
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a disposable assembly defining a plurality of fluid circuits;
a control unit having a component interface region for operatively interfacing with the disposable assembly, the component interface region being configured to monitor a plurality of fluid parameters corresponding with fluid flowing through the plurality of fluid circuits; and
a user interface, operatively interconnected with the component interface region, including a display having at least two display regions selected from a group of;
a first display region for continuously displaying at least a first set of values corresponding with each of a first set of the plurality of monitored parameters;
a second display region for selectively displaying one of a plurality of graphic depictions, each graphic depiction corresponding with a given one of the plurality of fluid circuits; and
a third display region for displaying user alert indications when a given one of the plurality of monitored parameters is outside of a corresponding predetermined range.
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68. An extracorporeal blood perfusion system, comprising:
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a disposable assembly including a cartridge and a plurality of tubing lines, the disposable assembly defining a blood circuit for receiving venous blood from a patient and transferring oxygenated blood to the patient, and a cardioplegia circuit for transferring a cardioplegia solution to the patient;
a control unit including a component interface region for operatively interfacing with the disposable assembly; and
a user interface, operably interconnected with the component interface region, including a display, the display being configured for displaying narrative instructions and corresponding graphic depictions for loading the disposable assembly on the component interface region.
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70. An extracorporeal blood perfusion system, comprising:
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a disposable assembly defining a plurality of fluid circuits;
a control unit having a component interface region including a flow controller configured to control the flow of fluids through at least a first of the plurality of fluid circuits, and at least a first sensor for monitoring a first fluid parameter corresponding with fluid flowing through the first fluid circuit, wherein the flow controller is configured to be controllable to automatically adjust the flow of fluid through the first fluid circuit when the first sensor detects that the first parameter is outside of a predetermined range; and
a user interface, operatively interconnected with the component interface region, including a display configured for selectively displaying functional objects, at least one of the objects being employable by a user to set the predetermined range. - View Dependent Claims (71, 72, 73, 74)
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75. An extracorporeal blood perfusion system, comprising:
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a disposable assembly defining a plurality of fluid circuits;
a control unit including a component interface region for operatively interfacing with the disposable assembly;
a user interface, operatively interconnected with the component interface region, including a display configured to provide a context-driven display region, the context-driven display region displaying a plurality of tabs provided for functional interface with a user, and any one of a plurality of information sets, each information set corresponding with a given one of the tabs, wherein separate first and second tabs are provided in corresponding relation to at least a first fluid circuit and a second fluid circuit comprising the plurality of fluid circuits. - View Dependent Claims (76, 77, 79, 80, 81, 82, 83, 84, 85)
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78. An extracorporeal blood perfusion system for receiving venous blood from a patient and for returning oxygenated blood to the patient in a cardiopulmonary bypass procedure comprising:
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a cardiopulmonary circuit configured to receive venous blood from the patient and to return oxygenated blood to the patient;
a cardioplegia circuit configured for delivering a cardioplegia solution to the patient;
a cardiotomy circuit configured for withdrawing fluids from the patient; and
a cartridge having a housing defining a plurality of internal passageways connected to the cardiopulmonary circuit, the cardioplegia circuit, and the cardiotomy circuit.
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86. An extracorporeal blood perfusion system comprising:
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a disposable assembly comprising a plurality of components interconnected by a plurality of tubing lines, the plurality of components including a cartridge and at least one of an oxygenator, a heat exchanger, a blood reservoir and an arterial filter, the cartridge having a housing defining a plurality of internal fluid passageways, the tubing lines interconnecting the components to define a blood circuit for receiving venous blood from a patient and returning oxygenated blood to the patient; and
a control unit having an interface region for operatively interfacing with the disposable assembly, the interface region including a plurality of sensors for sensing at least one fluid characteristic including pressure, temperature, level and air bubbles, and for generating a signal indicative of each fluid characteristic sensed, at least one of the sensors being positioned to sense a characteristic of fluid in an internal passageway of the cartridge, the control unit further including at least one flow control element configured to control the rate of flow of blood in the blood circuit in response to at least one of the sensed fluid characteristics. - View Dependent Claims (87)
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88. A method for maintaining the level of blood in a venous reservoir at a predetermined level when the reservoir is used in an extracorporeal blood perfusion system which includes a cardiopulmonary blood circuit for receiving venous blood from a patient through a venous line, oxygenating the blood in an oxygenator, and returning the oxygenated blood to the patient through an arterial line, the venous reservoir having an inlet connected to the venous line and an outlet connected to the oxygenator, the method comprising:
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providing a level control element operatively connected to the venous reservoir for controlling at least one of the rate of flow of venous blood out of the venous reservoir and the rate of flow of venous blood into the venous reservoir through the venous line;
providing a level sensor configured to continuously monitor the level of blood in the venous reservoir and to provide level signals indicative of the blood level; and
providing a control unit connected to received the level signals, the control unit being connected to the level control element and being configured to functionally control operation of the level control element such that when the level signals are indicative of a level below the predetermined level the flow control element is caused to increase venous blood level in the venous reservoir by at least one of increasing venous blood flow into the venous reservoir and decreasing venous blood flow out of the venous reservoir, and when the level signals are indicative of a level which is above the predetermined level the flow control element is caused to decrease venous blood level in the venous reservoir by at least one of decreasing venous blood flow into the venous reservoir and increasing venous blood flow out of the venous reservoir. - View Dependent Claims (89, 90, 91, 92)
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93. In an extracorporeal blood perfusion system for receiving blood from a patient through a venous line, oxygenating the blood, and returning the oxygenated blood to the patient through an arterial line, a method of preventing the return of oxygenated blood containing gaseous bubbles to the patient, the extracorporeal blood perfusion system including a cardiopulmonary blood circuit having a plurality of tubing lines interconnecting a venous reservoir, a blood oxygenator and an arterial blood filter, the method comprising:
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connecting the blood perfusion system for receiving venous blood from the patient and returning oxygenated blood to the patient;
providing an air purge line including a purge valve having an open position for opening the purge line and a closed position for closing the purge line;
fluidly connecting a first end of the purge line with an outlet of the oxygenator and a second end of the purge line with an inlet of the venous reservoir; and
providing a control unit having a sensor for determining the presence of gaseous bubbles in a tubing line connected to an outlet of the oxygenator, the control unit being connected to the first pump for controlling the speed of the first pump and being connected to the purge valve for automatically opening the purge valve when gaseous bubbles are sensed by the sensor such that at least a portion of the oxygenated blood is diverted from the patient through the air purge line back to the venous reservoir. - View Dependent Claims (94, 95, 96)
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97. A method of automatically priming an extracorporeal blood perfusion system which includes a cardiopulmonary blood circuit for receiving venous blood from a patient, oxygenating the blood and returning the oxygenated blood to the patient, the blood circuit being defined by a plurality of tubing lines interconnecting a plurality of components including a venous reservoir and an oxygenator, the blood perfusion system further including a first pump for causing fluid to flow in the blood circuit, the method comprising:
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providing a source of priming fluid;
providing a priming fluid valve;
connecting the source of priming fluid to the blood circuit through the priming fluid valve in a manner such that the flow of priming fluid to the blood circuit is controllable by the priming fluid valve;
providing a control unit having a component interface region for functionally interfacing with and controlling the first pump and the priming fluid valve, the control unit having a plurality of selectable operational modes including an automatic priming mode whereby upon selection of the automatic priming mode the control unit opens the priming fluid valve and controls the speed of the first pump to prime the blood circuit; and
selecting the automatic priming mode on the control unit to prime the blood circuit including the venous reservoir, oxygenator and interconnecting tubing. - View Dependent Claims (98, 99)
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100. In an extracorporeal blood perfusion system for receiving venous blood from a patient through an end of a venous line, oxygenating the blood and returning the oxygenated blood to the patient through an end of an arterial line, the perfusion system including a cardiopulmonary blood circuit defined by a plurality of tubing lines interconnecting a plurality of components including a venous reservoir and oxygenator, the perfusion system also including a first roller pump attached to a tubing line of the cardiopulmonary blood circuit, a method of testing for leaks and pump loading and occlusion in the cardiopulmonary blood circuit comprising:
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sealing the ends of the venous and arterial lines;
providing a control unit having a pressure sensor for measuring pressure in the cardiopulmonary blood circuit, the control unit being connected for controlling the operation of the first roller pump, the control unit having a cardiopulmonary blood circuit test mode, selection of which causes the control unit to automatically operate the first roller pump until a first predetermined pressure is measured by the sensor, and to monitor the pressure over a predetermined period of time to determine whether the decay of pressure is within a predetermined acceptable range; and
selecting the cardiopulmonary blood circuit test mode of the control unit.
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101. In an extracorporeal blood perfusion system for receiving venous blood from a patient through an end of a venous line, oxygenating the blood and returning the oxygenated blood to the patient through an end of an arterial line, the perfusion system including a cardiopulmonary blood circuit defined by a plurality of tubing lines interconnecting a plurality of components including a venous reservoir and oxygenator, a cardioplegia circuit for delivering a cardioplegia solution to the patient through an end of a cardioplegia line, and a suction circuit for removing blood and other fluids from the patient through an end of a suction line, a method of testing for leaks and for proper pump loading and occlusion in the cardiopulmonary blood circuit, the cardioplegia circuit, and the suction circuit, the method comprising:
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sealing the ends of the venous, arterial, cardioplegia and suction lines;
providing a control unit having at least one pressure sensor for measuring fluid pressure in the cardiopulmonary blood circuit, the cardioplegia circuit and the suction circuit, the control unit being connected for controlling the operation of the first, second and third roller pumps, the control unit having a cardiopulmonary blood circuit test mode, selection of which causes the control unit to automatically operate the first roller pump until a first predetermined pressure is measured by the sensor and to monitor the pressure over a first predetermined period of time to determine whether the decay of pressure is within a first predetermined acceptable range, the control unit further having a cardioplegia circuit test mode, selection of which causes the control unit to automatically operate the second roller pump until a second predetermined pressure is measured by the sensor and to monitor the pressure over a second predetermined period of time to determine whether the decay of pressure is within a second predetermined acceptable range, the control unit further having a suction circuit test mode, selection of which causes the control unit to automatically operate the third roller pump until a third predetermined pressure is measured by the sensor and to monitor the pressure over a third predetermined period of time to determine whether the decay of pressure is within a third predetermined acceptable range;
selecting the cardiopulmonary blood circuit test mode of the control unit to test for leaks in the cardiopulmonary blood circuit and proper pump loading and occlusion of the first pump;
selecting the cardioplegia circuit test mode of the control unit to test for leaks in the cardioplegia blood circuit and proper pump loading and occlusion of the second pump; and
selecting the suction circuit test mode of the control unit to test for leaks in the suction circuit and proper pump loading and occlusion of the third pump.
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Specification