Extracorporeal circulation system

Abstract

An extracorporeal circulation system (10) is provided with: a holder unit (12) integrally having a holder part (18) to which an artificial lung (100) is attached, and a pump drive part (20) for rotating a blood pump (110); and an input part (67) provided separately from the holder unit (12). The holder unit (12) has a pump control part (52) that controls the pump drive part (20) on the basis of information from a sensor for measuring physical property parameters in the circuit and information from the input part (67).

Description

Extracorporeal circulation system

[0001] The present invention relates to an extracorporeal circulation system.

[0002] For example, when blood supply to a patient is required during surgery, extracorporeal circulation is performed to circulate the patient's blood outside the body using an extracorporeal circulation system having a cardiopulmonary bypass device or the like. The extracorporeal circulation system is disclosed in, for example, Japanese Patent Application Laid-Open No. 2007-14504.

[0003] Japanese Patent Application Laid-Open No. 2007-14504

[0004] Conventional extracorporeal circulation systems have a plurality of component devices, which are connected by wire and control extracorporeal circulation while exchanging various signals (control signals and measured values). As a result, since there are many wirings at the location where the extracorporeal circulation system is used, the handling of the wirings becomes complicated. In addition, when each device is connected by a cable, there is a concern that electromagnetic waves generated from the motor interfere with the motor control signal via the cable and are affected by noise. In addition, in a conventional extracorporeal circulation system, a motor and a sensor for driving a blood pump need to be attached to a blood circuit close to the patient, but a long motor cable becomes a noise source such as electromagnetic waves, and a long sensor cable is easily affected by disturbances. Therefore, it is desired to set the cable as short as possible, but on the other hand, considering the operability, the operation units of various devices are preferably located away from the blood circuit, and the two are in a conflicting relationship.

[0005] An object of the present invention is to solve the above-described problems.

[0006] (1) A first aspect of the present disclosure is a holder unit integrally having a holder portion to which an artificial lung for performing gas exchange is attached and a pump driving portion for rotating a blood pump for circulating blood in a circuit of extracorporeal circulation, and an extracorporeal circulation system provided separately from the holder unit and having an input portion for receiving an input operation, wherein the holder unit has a pump control portion for controlling the pump driving portion based on information from a sensor for measuring physical property parameters in the circuit and information from the input portion.

[0007] With this configuration, the pump control unit is housed in the holder unit along with the artificial lung holder and pump drive unit. As a result, the wiring connecting the sensors that measure various parameters in the extracorporeal circulation circuit to the pump control unit is concentrated around the holder unit. This reduces the effort required for wiring and improves the flexibility of the extracorporeal circulation system's placement. Furthermore, because the pump control unit, which processes key control parameters that are highly susceptible to electromagnetic interference, is integrated into the holder unit, noise countermeasures for the cables electrically connecting the pump control unit and the pump drive unit can be implemented within the holder unit. In other words, since these cables are not exposed to the outside of the holder unit, they are less susceptible to interference from electromagnetic waves from the motor. Therefore, noise immunity to electromagnetic waves generated by the motor can be improved.

[0008] (2) In the extracorporeal circulation system described in item (1) above, a display unit for displaying information may be provided separately from the holder unit.

[0009] (3) In the extracorporeal circulation system described in item (2) above, the input unit may be provided as a base unit having the input unit integrated with the display unit.

[0010] This configuration allows the display unit and input unit to be treated as a single integrated base unit, thereby improving convenience.

[0011] (4) In the extracorporeal circulation system described in item (3) above, the base unit may be a tablet terminal.

[0012] With this configuration, a base unit equipped with predetermined functions can be easily obtained by using a general-purpose tablet device as the base unit.

[0013] (5) The extracorporeal circulation system described in item (3) above may further include a detachable connecting portion between the holder unit and the base unit.

[0014] With this configuration, when moving the extracorporeal circulation system from one location to another, the base unit and the holder unit can be integrated via a connecting part. Therefore, the extracorporeal circulation system can be easily moved.

[0015] (6) In the extracorporeal circulation system described in item (5) above, the connection part may be provided on the base unit and may also be attachable to medical equipment other than the holder unit.

[0016] This configuration allows the base unit to be attached to locations other than the holder unit, thus increasing the flexibility of the base unit's placement.

[0017] (7) In the extracorporeal circulation system described in item (3) above, the holder unit and the base unit may be connected to each other via a single communication cable.

[0018] With this configuration, there is only one wire between the holder unit and the base unit, making wiring easier.

[0019] (8) In the extracorporeal circulation system described in item (3) above, the holder unit and the base unit may be wirelessly connected to each other.

[0020] With this configuration, there is no wiring between the holder unit and the base unit, which further increases the flexibility of the base unit's placement.

[0021] (9) In the extracorporeal circulation system described in any one of the above items (3) to (8), the base unit may have a display control unit that controls the display content of the display unit.

[0022] With this configuration, the control functions necessary for the operation of the extracorporeal circulation system can be appropriately shared between the holder unit and the base unit.

[0023] (10) In the extracorporeal circulation system described in any one of the above items (1) to (9), the holder unit may have a holder unit-side display unit for displaying information.

[0024] With this configuration, information about the circuit (such as physical properties) can be checked even in the holder unit.

[0025] The extracorporeal circulation system described herein reduces the effort required for wiring and improves the flexibility of the extracorporeal circulation system's placement. Furthermore, it improves noise immunity against electromagnetic waves generated by the motor.

[0026] Figure 1 is a perspective view of the combined extracorporeal circulation system according to the present disclosure. Figure 2 is another perspective view of the combined extracorporeal circulation system. Figure 3 is a perspective view of the separated extracorporeal circulation system. Figure 4 is a schematic diagram of the extracorporeal circulation system. Figure 5 is a block diagram of the extracorporeal circulation system. Figure 6A is a side view of the separated extracorporeal circulation system. Figure 6B is a side view of the combined extracorporeal circulation system. Figure 7 is a perspective view of the base unit attached to a medical cart. Figure 8 is a perspective view of the base unit attached to a bed.

[0027] The extracorporeal circulation system 10 shown in Figure 1 is used to circulate a patient's blood outside the body. The extracorporeal circulation system 10 comprises a holder unit 12 and a base unit 14. In the following description, the height direction of the holder unit 12 and the base unit 14 is referred to as the Z direction. The width direction of the holder unit 12 and the base unit 14, which is perpendicular to the Z direction, is referred to as the X direction. The front-to-back direction (depth direction) of the holder unit 12 and the base unit 14, which is perpendicular to the X and Z directions, is referred to as the Y direction. Of the Y directions, the Y1 direction is considered the front, and the Y2 direction is considered the rear.

[0028] As shown in Figure 2, the holder unit 12 integrally comprises a holder unit body 16, a holder section 18, and a pump drive unit 20. The holder unit body 16 includes a housing 22 and a first control device 24. The first control device 24 is housed within the housing 22. Details of the first control device 24 will be described later.

[0029] The holder portion 18 is supported (fixed) to the holder unit body 16. The artificial lung 100 is attached to the holder portion 18. The holder portion 18 holds the artificial lung 100.

[0030] The artificial lung 100 is detachable from the holder portion 18. The artificial lung 100 performs gas exchange operations on the blood (adding oxygen to the blood and removing carbon dioxide). The artificial lung 100 is, for example, a membrane oxygenator, but is particularly preferably a hollow fiber membrane oxygenator. Oxygen gas is supplied to the artificial lung 100 through an oxygen supply tube (not shown). Blood that flows into the artificial lung 100 from the blood inflow port 102 undergoes gas exchange in the gas exchange section within the artificial lung 100. As shown in Figure 4, the blood that has undergone gas exchange flows out from the blood outflow port 104 of the artificial lung 100 and is returned to the human body HM via the blood delivery catheter 122.

[0031] In Figure 2, the pump drive unit 20 is a drive unit for rotating the blood pump 110. The pump drive unit 20 is supported (fixed) to the holder unit body 16. The pump drive unit 20 has a motor 26, a housing 28, and a pump mounting part 30. The motor 26 generates a rotational driving force for rotating the blood pump 110. A magnetic coupling part (not shown) is attached to the motor 26. The magnetic coupling part can magnetically couple with the impeller provided on the blood pump 110. The housing 28 houses the motor 26.

[0032] The blood pump 110 is detachable from the pump mounting section 30. The blood pump 110 is a pump for circulating blood within the extracorporeal circulation circuit. The blood pump 110 is a centrifugal pump. A blood withdrawal catheter 120 is connected to the blood inlet port 112 of the blood pump 110. One end of a relay tube 116 is connected to the blood outlet port 114 of the blood pump 110. The other end of the relay tube 116 is connected to the blood inlet port 102 of the artificial lung 100. The blood flowing out from the blood outlet port 114 of the blood pump 110 is introduced into the artificial lung 100 via the relay tube 116, and the gas exchange described above takes place.

[0033] The holder unit 12 further includes a holder unit-side display unit 65. The holder unit-side display unit 65 is provided on the upper surface of the housing 22. Alternatively, the holder unit-side display unit 65 may be provided on one side of the housing 22 in the width direction (X direction). The holder unit-side display unit 65 displays information regarding the physical properties of the extracorporeal circulation circuit (physical property information described later). The holder unit-side display unit 65 is, for example, a flat panel display such as a liquid crystal display.

[0034] As shown in Figure 4, the extracorporeal circulation circuit is equipped with a sensor group 34 consisting of multiple sensors for measuring various physical parameters within the circuit. Specifically, the sensor group 34 includes multiple pressure sensors (first pressure sensor 36a, second pressure sensor 36b, third pressure sensor 36c), an oxygen saturation sensor 38 (SO2 sensor), a temperature sensor 40, and a flow rate sensor 42. The first pressure sensor 36a, second pressure sensor 36b, third pressure sensor 36c, oxygen saturation sensor 38, temperature sensor 40, and flow rate sensor 42 are each connected to the holder unit 12 (first control device 24) via multiple signal lines 44a to 44f.

[0035] The first pressure sensor 36a is located in the blood delivery catheter 122. The first pressure sensor 36a is a pressure sensor for measuring the pressure of the blood flowing through the blood delivery catheter 122. The blood delivery catheter 122 is a catheter for returning blood after gas exchange to the human body's hemoglobin (HM). The second pressure sensor 36b is located in the intermediate tube 116. The second pressure sensor 36b is a pressure sensor for measuring the pressure of the blood flowing through the intermediate tube 116. The third pressure sensor 36c is located in the blood withdrawal catheter 120. The third pressure sensor 36c is a pressure sensor for measuring the pressure of the blood flowing through the blood withdrawal catheter 120. The blood withdrawal catheter 120 is a catheter for taking blood from the human body's HM.

[0036] The oxygen saturation sensor 38 is located on the blood withdrawal catheter 120. The oxygen saturation sensor 38 is a sensor for measuring the oxygen saturation of the blood flowing through the blood withdrawal catheter 120. The temperature sensor 40 is located on the blood withdrawal catheter 120. The temperature sensor 40 is a sensor for measuring the temperature of the blood flowing through the extracorporeal circulation circuit. The temperature sensor 40 may also be located on the relay tube 116 or the blood delivery catheter 122. The flow rate sensor 42 is a sensor for measuring the flow rate of the blood flowing through the extracorporeal circulation circuit. The flow rate sensor 42 is located on the blood delivery catheter 122. The flow rate sensor 42 may also be located on the relay tube 116 or the blood withdrawal catheter 120.

[0037] As shown in Figure 5, the first control device 24 includes a first arithmetic unit 46, a first storage unit 47, and a first communication unit 48. Although not shown, the first control device 24 is also equipped with a power supply circuit that converts external power into the required power and outputs it. The first arithmetic unit 46 is composed of a processor, such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit), i.e., a processing circuit.

[0038] The first arithmetic unit 46 includes a first acquisition unit 50 and a pump control unit 52. The first acquisition unit 50 and the pump control unit 52 can be realized by the first arithmetic unit 46 executing a program stored in the first storage unit 47. At least a portion of the first acquisition unit 50 and the pump control unit 52 may be realized by integrated circuits such as ASICs (Application Specific Integrated Circuits) and FPGAs (Field-Programmable Gate Arrays). Alternatively, at least a portion of the first acquisition unit 50 and the pump control unit 52 may be composed of electronic circuits including discrete devices.

[0039] The first acquisition unit 50 acquires information from the first pressure sensor 36a, the second pressure sensor 36b, the third pressure sensor 36c, the oxygen saturation sensor 38, the temperature sensor 40, and the flow rate sensor 42 (hereinafter referred to as "physical property information") via the first communication unit 48. The first acquisition unit 50 also acquires information from the base unit 14 (the input unit 67, which will be described later) (hereinafter referred to as "input information") via the first communication unit 48.

[0040] The pump control unit 52 includes a sensor signal input unit (not shown) that inputs signals from the various sensors mentioned above to the pump control unit 52. The pump control unit 52 controls the pump drive unit 20 based on the physical property information obtained via the sensor signal input unit and the input information. The pump control unit 52 is a motor driver. Specifically, the pump control unit 52 performs various information processing such as signal processing and judgment, and rotation speed control of the blood pump 110 based on the physical property information and the input information. In rotation speed control, the pump control unit 52 controls the rotation speed of the blood pump 110 by controlling the rotation speed of the motor 26. If the pump control unit 52 (motor driver) has a function to send a signal to rotate the motor 26 based on the input information, the physical property information of the sensor may be used directly. In this case, the pump control unit 52 does not perform rotation speed control.

[0041] The first storage unit 47 is composed of a volatile memory (not shown) and a non-volatile memory (not shown). Examples of volatile memory include RAM (Random Access Memory). The volatile memory is used as the working memory of the processor and temporarily stores data necessary for processing or calculation. Examples of non-volatile memory include ROM (Read Only Memory) and flash memory. The non-volatile memory is used as storage memory and stores programs, tables, maps, etc. At least a part of the first storage unit 47 may be provided in a processor, integrated circuit, etc. as described above.

[0042] The first communication unit 48 communicates with the sensor group 34 and the pump driving unit 20, and transmits and receives various kinds of information and various signals. Also, the first communication unit 48 communicates with the base unit 14 (the second communication unit 74 described later), and transmits and receives various kinds of information and various signals to and from the base unit 14.

[0043] As shown in FIG. 2, the holder unit 12 further includes a support leg portion 54 and a grip portion 56. The support leg portion 54 is a support member for holding the holder unit 12 in a predetermined posture on the ground surface, and is connected (fixed) to the lower portion of the holder unit main body 16 (the housing 22). The support leg portion 54 protrudes rearward (in the Y2 direction) from the housing 22. The support leg portion 54 is connected to both ends in the width direction of the housing 22. The support leg portion 54 is formed in a U shape. The support leg portion 54 has a width direction portion 54a extending in the width direction of the holder unit 12 and a pair of side portions 54b extending from both ends of the width direction portion 54a toward the housing 22.

[0044] The grip portion 56 is a portion that is gripped by a user such as a medical worker. The grip portion 56 is connected to the lower portion of the holder unit main body 16. The grip portion 56 is connected to both ends in the width direction of the housing 22. The grip portion 56 is formed in a U shape. The grip portion 56 has a grip bar 56a extending in the width direction of the holder unit 12 and a pair of side arm portions 56b extending downward from both ends of the grip bar 56a.

[0045] The grip portion 56 is supported so as to be rotatable with respect to the holder unit main body 16 via a hinge portion 57. The rotation axis of the grip portion 56 (the hinge portion 57) is parallel to the width direction (X direction) of the holder unit 12. The grip portion 56 can be switched between a first position P1 (FIG. 6A) and a second position P2 (FIG. 6B) inclined by a predetermined angle with respect to the first position P1. As shown in FIG. 6A, the grip portion 56 is inclined by a predetermined angle toward the rear (Y2 direction) side with respect to the Z direction at the first position P1. As shown in FIG. 6B, the grip portion 56 is inclined by a predetermined angle toward the front (Y1 direction) side with respect to the first position P1 at the second position P2 and is substantially parallel to the Z direction.

[0046] Although not shown in detail, a locking mechanism is provided at the connection between the gripping part 56 and the holder unit main body 16 that can fix the gripping part 56 at each of the first position P1 and the second position P2. The proper use of the first position P1 and the second position P2 will be described later. In other embodiments, the gripping part 56 may be fixedly and non-rotatably attached to the holder unit main body 16.

[0047] The base unit 14 is a device provided separately from the holder unit 12. The base unit 14 is detachable from the holder unit 12. When the base unit 14 is connected to the holder unit 12, the holder unit 12 may supply power to an internal power source provided within the base unit 14, or power may be supplied to the holder unit 12 via a communication cable or the like.

[0048] As shown in FIG. 1, the base unit 14 includes a base unit main body 60 and a connection part 62. The base unit main body 60 includes a housing 63, a grip 64, a display part 66, an input part 67, and a second control device 68 (see FIG. 5). Thus, the base unit 14 integrally has the display part 66 and the input part 67.

[0049] The housing 22 is formed flat as a whole. The grip 64 is provided on the upper part of the housing 22. The grip 64 extends in the width direction of the base unit main body 60. Both ends of the grip 64 are connected to the upper part of the housing 22. An opening 64a is formed between the grip 64 and the housing 22.

[0050] The base unit main body 60 has a first surface 60a that is the front surface and a second surface 60b that is the back surface. The display part 66 and the input part 67 are provided on the first surface 60a. The second surface 60b is the surface on the opposite side of the first surface 60a. The display part 66 displays various information. The display part 66 can display, for example, the physical property information (pressure, temperature, flow rate, oxygen saturation) within the circuit acquired from the holder unit 12. The display part 66 can display, for example, a setting screen for various parameters (such as pump rotation speed, etc.). The display part 66 is, for example, a flat panel display such as a liquid crystal display.

[0051] The input unit 67 is a user interface that accepts input operations from the user. The user can set various parameters (such as pump rotation speed) by operating the input unit 67. The input unit 67 may have multiple operation units. These operation units may include, for example, a rotary knob 67a, a button 67b, etc. The base unit body 60 may also be equipped with a touch panel that combines the functions of the display unit 66 and the input unit 67.

[0052] As shown in Figure 5, the second control device 68 includes a second arithmetic unit 70, a second storage unit 72, and a second communication unit 74. The second arithmetic unit 70 is composed of a processor, such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit), i.e., a processing circuit.

[0053] The second arithmetic unit 70 includes a second acquisition unit 76 and a display control unit 78. The second acquisition unit 76 and the display control unit 78 can be realized by the execution of a program stored in the second storage unit 72 by the second arithmetic unit 70. At least a portion of the second acquisition unit 76 and the display control unit 78 may be realized by integrated circuits such as ASICs (Application Specific Integrated Circuits) and FPGAs (Field-Programmable Gate Arrays). Alternatively, at least a portion of the second acquisition unit 76 and the display control unit 78 may be composed of electronic circuits including discrete devices.

[0054] The second acquisition unit 76 acquires input information from the input unit 67. The second calculation unit 70 transmits the input information acquired by the second acquisition unit 76 to the first control device 24 of the holder unit 12. The second acquisition unit 76 also acquires physical property information from the first control device 24 of the holder unit 12 via the second communication unit 74. The acquired physical property information is processed by the display control unit 78 and displayed on the display unit 66. The display control unit 78 controls the display content of the display unit 66.

[0055] The second communication unit 74 communicates with the holder unit 12 (first communication unit 48) and transmits and receives various information and signals between it and the holder unit 12.

[0056] The holder unit 12 and the base unit 14 are connected to each other via a single communication cable 80. The communication cable 80 may include signal lines for supplying power from the base unit 14 to the holder unit 12. The holder unit 12 or the base unit 14 may be provided with a housing (pocket) capable of accommodating the communication cable 80. The holder unit 12 and the base unit 14 may also be configured to communicate wirelessly with each other.

[0057] The base unit 14 may be composed of a tablet terminal instead of a dedicated device as described above. In this case, the tablet terminal functions as a base unit 14 by installing application software to realize various functions such as display processing, input processing, and communication processing. By using a general-purpose tablet terminal as the base unit 14, a base unit 14 equipped with predetermined functions can be easily obtained.

[0058] As shown in Figures 2 and 3, the connecting portion 62 is provided on the second surface 60b of the base unit body 60. The connecting portion 62 allows the base unit 14 to be attached to and detached from the holder unit 12. As shown in Figure 2, when the base unit 14 is connected to the holder unit 12 by the connecting portion 62, the second surface 60b of the base unit 14 faces the front surface (Y1 direction side) of the holder unit body 16 (housing 22). The connecting portion 62 is rotatably supported on the upper part of the base unit body 60 via a hinge portion 61. The axis of rotation of the connecting portion 62 is parallel to the width direction (X direction) of the base unit 14. Therefore, the connecting portion 62 can tilt in the front-rear direction on the second surface 60b of the base unit body 60.

[0059] In this embodiment, the connecting portion 62 is a clip that can be opened and closed relative to the base unit body 60 by rotation. The connecting portion 62 has a lever portion 82, an intermediate portion 84, and an engaging portion 86. The connecting portion 62 has an S-shaped bend formed by the lever portion 82, the intermediate portion 84, and the engaging portion 86. The lever portion 82 constitutes the upper part of the connecting portion 62. The lever portion 82 has an opening 82a into which the user's finger can be inserted. The lever portion 82 is positioned to face the grip 64 of the base unit body 60. This makes it easy for the user to operate the lever portion 82 because they can grasp the grip 64 and the lever portion 82 at the same time.

[0060] The intermediate portion 84 forms the space between the lever portion 82 and the engaging portion 86 at the connecting portion 62. The intermediate portion 84 connects the lower part of the lever portion 82 and the upper part of the engaging portion 86. The engaging portion 86 protrudes downward from the intermediate portion 84. The upper part of the holder unit body 16 can be inserted between the base unit body 60 and the engaging portion 86. Therefore, the engaging portion 86 can engage with the upper part of the holder unit body 16. The connecting portion 62 is elastically biased by a biasing member 88 in the direction that closes the engaging portion 86. The biasing member 88 is composed of, for example, a torsion spring.

[0061] The connecting portion 62 does not necessarily have to be rotatable relative to the base unit body 60. Therefore, the connecting portion 62 may be a hook fixed to the base unit body 60 in a non-movable manner. The connecting portion 62 may also have a structure that includes a hook-and-loop fastener, a magnet, etc.

[0062] As described above, the gripping portion 56 provided on the holder unit 12 can be switched between a first position P1 (Figure 6A) and a second position P2 (Figure 6B). The first position P1 and the second position P2 are set as follows.

[0063] As shown in Figure 6A, when the holder unit 12 is separated from the base unit 14 and the gripping portion 56 is set to the first position P1, the holder unit 12 is lifted by gripping the gripping portion 56, and the bottom of the holder unit 12 (support legs 54) becomes approximately horizontal. Hereinafter, the state in which the holder unit 12 is separated from the base unit 14 will be referred to as the "separated state". In the separated state, the center of gravity of the holder unit 12 is the first center of gravity position GP1. When the holder unit 12 is placed on a horizontal mounting surface, the upper end of the gripping portion 56 (gripping bar 56a) set to the first position P1 is located approximately directly above the first center of gravity position GP1.

[0064] As shown in Figure 6B, when the holder unit 12 and the base unit 14 are integrated via the connecting portion 62 and the gripping portion 56 is set to the second position P2, the holder unit 12 and the base unit 14 are lifted by gripping the gripping portion 56, and the bottom of the holder unit 12 (support leg portion 54) becomes approximately horizontal. Hereinafter, the state in which the holder unit 12 and the base unit 14 are connected to each other and integrated will be referred to as the "combined state". The holder unit 12 and the base unit 14 in the combined state will be collectively referred to as the "combined unit 15".

[0065] In the combined state, the center of gravity of the combined unit 15 is the second center of gravity position GP2. The second center of gravity position GP2 is located in front of the center of gravity position (first center of gravity position GP1) of the holder unit 12 in the separated state. When the combined unit 15 is placed on a horizontal mounting surface, the upper end of the gripping portion 56 (gripping bar 56a), which is set to the second position P2, is located approximately directly above the second center of gravity position GP2.

[0066] The connection portion 62 of the base unit 14 can be attached to medical equipment other than the holder unit 12. For example, as shown in Figure 7, the connection portion 62 can be attached to a cylindrical bar 132 provided on a medical cart 130. Also, as shown in Figure 8, the connection portion 62 can be attached to an edge portion 142 (headboard or footboard) or pole provided on a bed 140.

[0067] This embodiment provides the following effects.

[0068] As shown in Figure 4, since the pump control unit 52 is located in the holder unit 12, the wiring (signal lines 44a to 44f) extending from various sensors is concentrated around the holder unit 12. This reduces the effort required for wiring and improves the flexibility of the extracorporeal circulation system 10's placement. Furthermore, because the pump control unit 52, which processes key control parameters that are significantly affected by electromagnetic waves, is integrated into the holder unit 12, noise countermeasures for the cable electrically connecting the pump control unit 52 and the pump drive unit 20 can be implemented within the holder unit 12. In other words, since the cable is not exposed to the outside of the holder unit 12, it is less susceptible to the influence of electromagnetic waves from the motor 26. Therefore, it is easy to implement noise immunity against electromagnetic waves.

[0069] As shown in Figure 1, the extracorporeal circulation system 10 includes a base unit 14 that integrally has a display unit 66 and an input unit 67. With this configuration, the display unit 66 and the input unit 67 can be handled integrally as part of the base unit 14, thus improving convenience.

[0070] As shown in Figure 5, the base unit 14 has a display control unit 78 that controls the display content of the display unit 66. With this configuration, the control functions necessary for the operation of the extracorporeal circulation system 10 can be appropriately shared between the holder unit 12 and the base unit 14.

[0071] As shown in Figure 1, the holder unit 12 has a gripping portion 56 that is rotatably supported relative to the holder unit body 16. The gripping portion 56 is switchable between a first position P1 (Figure 6A) and a second position P2 (Figure 6B). As shown in Figure 6A, when the holder unit 12 is separated from the base unit 14 and the gripping portion 56 is set to the first position P1, the bottom of the holder unit 12 becomes approximately horizontal when the holder unit 12 is lifted by gripping the gripping portion 56. On the other hand, as shown in Figure 6B, when the holder unit 12 and the base unit 14 are integrated via the connecting portion 62 and the gripping portion 56 is set to the second position P2, the bottom of the holder unit 12 becomes approximately horizontal when the holder unit 12 and the base unit 14 are lifted by gripping the gripping portion 56.

[0072] With this configuration, the appropriate position of the gripping portion 56 can be selected according to each state: when the holder unit 12 and the base unit 14 are separated (separated state) and when the holder unit 12 and the base unit 14 are combined to form a combined unit 15 (combined state). Although the center of gravity is different in the separated state and the combined state, by selecting the position of the gripping portion 56 according to the state, the base unit 14 or the combined unit 15 is easy to hold in both the separated and combined states.

[0073] As shown in Figure 2, the holder unit 12 has a holder unit-side display unit 65. With this configuration, information related to the circuit (such as physical property parameters) can also be checked on the holder unit 12.

[0074] The extracorporeal circulation system 10 is equipped with a detachable connector 62 that connects the holder unit 12 and the base unit 14. With this configuration, when moving the extracorporeal circulation system 10 from one location to another, the base unit 14 and the holder unit 12 can be integrated via the connector 62. This makes it easy to move the extracorporeal circulation system 10. In addition, because the base unit 14 and the holder unit 12 are integrated, the areas that need to be observed are concentrated in one place, making management easier. As shown in Figure 3, the base unit 14 is detachable from the holder unit 12 and has a high degree of freedom in placement, so the display unit 66 can be easily viewed by the user by placing the base unit 14 above the bed floor.

[0075] The connection portion 62 is provided on the second surface 60b (back) of the base unit body 60. With this configuration, the connection portion 62 is provided on the opposite side of the display unit 66, making it easier for the user to see the display content of the display unit 66.

[0076] As shown in Figures 7 and 8, the connecting portion 62 is provided on the base unit 14 and can be attached to medical equipment other than the holder unit 12 (medical cart 130, bed 140, etc.). With this configuration, the base unit 14 can be attached to equipment other than the holder unit 12, thus improving the flexibility of the base unit 14's placement. Furthermore, it does not occupy space on the bed, etc., and the occupied area can be reduced.

[0077] As shown in Figure 5, the holder unit 12 and the base unit 14 are connected to each other via a single communication cable 80. With this configuration, since there is only one wire between the holder unit 12 and the base unit 14, wiring is easy to manage.

[0078] On the other hand, if the holder unit 12 and the base unit 14 are configured to communicate wirelessly with each other, there is no wiring between the holder unit 12 and the base unit 14, which further improves the flexibility of the placement of the base unit 14.

[0079] While this disclosure has been described in detail, it is not limited to the individual embodiments described above. These embodiments can be added, replaced, modified, partially deleted, etc., in any way that does not depart from the gist of this disclosure or from the intent of this disclosure derived from the claims and their equivalents. These embodiments can also be implemented in combination. For example, the order of operations and processes in the embodiments described above are given as examples only and are not limited thereto. The same applies when numerical values ​​or mathematical formulas are used in the description of the embodiments described above.

Claims

1. An extracorporeal circulation system comprising: a holder unit integrally having a holder portion to which an artificial lung for gas exchange is attached, and a pump drive unit for rotating a blood pump for circulating blood in an extracorporeal circulation circuit; and an input unit provided separately from the holder unit for receiving input operations, wherein the holder unit has a pump control unit that controls the pump drive unit based on information from a sensor measuring physical property parameters in the circuit and information from the input unit.

2. An extracorporeal circulation system according to claim 1, comprising a display unit provided separately from the holder unit for displaying information.

3. An extracorporeal circulation system according to claim 2, comprising a base unit having the input unit integrally with the display unit.

4. An extracorporeal circulation system according to claim 3, wherein the base unit is a tablet terminal.

5. An extracorporeal circulation system according to claim 3, further comprising a detachable connecting portion between the holder unit and the base unit.

6. An extracorporeal circulation system according to claim 5, wherein the connection portion is provided on the base unit and can be attached to medical equipment other than the holder unit.

7. An extracorporeal circulation system according to claim 3, wherein the holder unit and the base unit are connected to each other via a single communication cable.

8. An extracorporeal circulation system according to claim 3, wherein the holder unit and the base unit are wirelessly connected to each other.

9. An extracorporeal circulation system according to claim 3, wherein the base unit has a display control unit that controls the display content of the display unit.

10. An extracorporeal circulation system according to any one of claims 1 to 9, wherein the holder unit has a holder unit-side display unit for displaying information.

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