JP6669659B2 - Extracorporeal circulation device - Google Patents

Description

  The present invention relates to an extracorporeal circulation device for performing extracorporeal circulation of blood of a patient, for example.

Conventionally, for example, during surgery, a percutaneous cardiopulmonary support (PCPS) has been used, which is generally performed using a centrifugal pump and a membrane oxygenator. The circuit provides a cardiopulmonary support via a femoral artery and vein using an artificial heart-lung machine (extracorporeal circulation device).
For this reason, when blood supply to a patient is required during an operation or the like, an extracorporeal circulation device having a cardiopulmonary bypass or the like is used to circulate the patient's blood outside the body (for example, Patent Document 1).
Such an extracorporeal circulation device needs to monitor the flow value and the like of the circulating blood.Therefore, the tube in which the blood is circulating is provided with a flow sensor or the like that measures the flow and the like of the blood in the tube. Are located.
Data measured by such a flow sensor is transmitted via a cable to a controller that manages the extracorporeal circulation device.

JP 2006-325750 A

However, there is a problem that how to arrange a cable for connecting the controller and the flow rate sensor and the like is so-called complicated.
On the other hand, if wireless communication is performed without using a cable, irregular reflection is likely to occur in a shielded environment such as an operating room, and power consumption is increased.
Furthermore, in the case of wireless communication, when the extracorporeal circulation device is used in an airplane, there is a possibility that the device of another airplane may be adversely affected.
In addition, since the extracorporeal circulation device is used after combining a controller, a tube, a flow sensor, and the like, there has been a demand that it is preferable that a setting procedure for communication connection between the flow sensor and the controller be simple.

  Therefore, the present invention eliminates the complexity of handling cables and the like, and also makes it possible to easily perform communication and other connections between a measurement unit such as a flow sensor and an extracorporeal circulation management device such as a controller. It is an object to provide a circulation device.

In the present invention, the above object has an extracorporeal circulation management unit that manages extracorporeal circulation of blood, a tube unit that guides blood flow in the extracorporeal circulation, and a measurement unit that measures blood in the tube unit. A plurality of conductive units for communication between the measuring unit and the extracorporeal circulation management unit are formed on the tube unit, and the plurality of conductive units are connected to the conductive unit, and a signal from the measuring unit is transmitted to the extracorporeal circulation unit. A management unit side communication unit for transmitting to the management unit is arranged, the management unit side communication unit has a communication unit side terminal unit including a plurality of terminals for connecting to the conductive unit, and the management unit side communication unit When a communication unit is attached to the tube unit, a specific signal is output from a specific terminal of the communication unit side terminal unit toward the tube unit, and the communication unit side terminal receives or does not receive the specific signal. Based on the location information of the other terminals It is accomplished by extracorporeal circulation apparatus which is characterized that you identify the arrangement information of the plurality of conductive portions for the communication unit side terminal portion.

According to the configuration, communication between the measurement unit such as the flow sensor and the extracorporeal circulation management unit such as the controller is performed via the conductive unit of the tube unit.
That is, many portions of the conventional cable and the like can be replaced with the conductive portion arranged in the tube portion.
Therefore, unlike the related art, there is no need to connect the measurement unit to the extracorporeal circulation management unit with a cable or the like, so that it is possible to eliminate the complexity of handling the cable and the like.

According to the configuration, when the management unit-side communication unit is attached to the tube unit, a specific signal is output from the specific terminal of the communication unit-side terminal unit to the tube unit, and communication that receives or does not receive the specific signal. The arrangement information of the plurality of conductive parts with respect to the communication unit side terminal unit is specified based on the position information of the other terminals of the unit side terminal unit.
Therefore, only by attaching the management section side communication section having the communication section side terminal section to the tube section, a communicable conductive section or the like can be automatically specified and communication becomes possible.
For this reason, the person in charge of assembling the extracorporeal circulation device does not need to arrange the management unit side communication unit at a specific position when attaching the management unit side communication unit to the tube unit. The connection of the units can be easily performed.

  Preferably, the measurement unit has a measurement unit side terminal unit including a plurality of terminals that can be connected to the conductive unit when the measurement unit is mounted on the tube unit, and the management unit communication unit includes a non-management unit. When transmitting the main body signal and the main body signal respectively in the different conductive parts, the measuring part side terminal part of the measuring part attached to the tube part is the measuring part side terminal part that has received the non-body signal. It is characterized in that the terminal of the measuring section side terminal section that receives the main body signal is specified based on the position information of the terminal, and the main body signal is received.

According to the configuration, the management-unit-side communication unit transmits the non-main-body signal such as a clock signal and the main-body signal such as transmission data by different conductive units.
On the other hand, the measuring unit side terminal unit of the measuring unit attached to the tube unit is a terminal of the measuring unit side terminal unit that receives the main body signal based on the position information of the terminal of the measuring unit side terminal unit that has received the non-main body signal. , And receives the main body signal.
Therefore, it is possible to communicate with the extracorporeal circulation management device via the management unit side communication unit without attaching the measurement unit having the measurement unit side terminal unit to the tube unit at a specific position.
For this reason, the person in charge of assembling the extracorporeal circulation device can automatically communicate without having to attach the measuring section to a specific position with respect to the tube section, so that the measuring section can be easily connected to the tube section. It can be carried out.

Preferably, a pump unit that circulates blood in the tube unit, and a motor unit that drives the pump unit, wherein the pump unit is connected to the tube unit and the motor unit is outside the body The pump unit and the motor unit are connected to a circulation management unit, and the pump unit and the motor unit are configured to be detachable. The communication unit side terminal unit is formed on a side of the motor unit that comes into contact with the pump unit. pump-side conductive portion on the motor unit side abutting on are formed, the pump-side conductive portion forms a shape similar to the conductive portion, wherein the pump-side conductive portion and the communication unit side terminal portion, respectively, The extracorporeal circulation management section is connected to the conductive section of the tube section.

According to the configuration, the communication between the extracorporeal circulation management unit and the measurement unit is transmitted to the measurement unit via the communication-side terminal unit of the motor unit, the pump-side conductive unit, and the conductive unit of the tube unit. When performing communication between them, there is no need to use a wired cable or the like.
Therefore, when assembling the extracorporeal circulation device, there is no need for the person in charge or the like to take into account the routing of cables and the like between the measurement unit and the extracorporeal circulation management unit.

  Preferably, the specific signal is a rectangular wave, and one of the plurality of conductive parts and / or one of the plurality of pump-side conductive parts is one or two of the measurement units. It is characterized in that it is configured to be connectable to the terminal of the unit side terminal unit and the terminal of the communication unit side terminal unit.

  As described above, according to the present invention, it is possible to eliminate the complexity of routing cables and the like, and to facilitate connection of communication and the like between a measurement unit such as a flow sensor and an extracorporeal circulation management device such as a controller. There is an advantage that an extracorporeal circulation device can be provided.

It is a schematic diagram showing the main composition of the extracorporeal circulation device concerning a 1st embodiment of the present invention. FIG. 2 is a schematic sectional view of the blood feeding tube and the blood removal tube of FIG. 1. FIG. 2 is a schematic perspective view illustrating a controller-side sensor signal receiving unit in FIG. 1. FIG. 2 is a schematic block diagram illustrating a main configuration of a controller in FIG. 1. FIG. 3 is a schematic block diagram illustrating a main configuration of a first information storage unit. FIG. 9 is a schematic block diagram illustrating a main configuration of a second information storage unit. FIG. 2 is a schematic block diagram illustrating a main configuration of the flow sensor of FIG. 1. 2 is a schematic flowchart illustrating a main operation example and the like of the extracorporeal circulation device in FIG. 1. 3 is another schematic flowchart showing a main operation example and the like of the extracorporeal circulation device in FIG. 1. It is a schematic sectional drawing which shows the relative positional relationship between a terminal and a conductive part when a controller side sensor signal receiving part is attached to a blood supply tube. It is a schematic diagram showing the main composition of the extracorporeal circulation device concerning a 2nd embodiment of the present invention. FIG. 3 is a schematic diagram illustrating an arrangement state of terminals on a connection surface of a drive motor. It is the schematic which shows the electroconductive part formed in the centrifugal pump side. FIG. 11 is a schematic diagram showing a pattern similar to the pattern shown in FIG. 10 of the first embodiment. It is the schematic which shows the modification of the terminal of 1st Embodiment. It is the schematic which shows the modification of the conductive part of 1st Embodiment etc.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and the like.
Note that the embodiments described below are preferred specific examples of the present invention, and therefore, various technically preferable limitations are added. However, the scope of the present invention particularly limits the present invention in the following description. It is not limited to these embodiments unless otherwise stated.

(First Embodiment)
FIG. 1 is a schematic diagram showing a main configuration of an extracorporeal circulation device 1 according to the first embodiment of the present invention.
The extracorporeal circulation device 1 shown in FIG. 1 is a device for performing extracorporeal circulation of the blood of the patient P shown in FIG. 1, and this “extracorporeal circulation” includes “extracorporeal circulation operation” and “auxiliary circulation operation”. .
The “extracorporeal circulation operation” is performed by the extracorporeal circulation device 1 when gas cannot be exchanged inside the patient P because blood does not circulate in the heart of the patient (subject) P to which the extracorporeal circulation device 1 is applied. A blood circulation operation and a gas exchange operation (addition of oxygen and / or removal of carbon dioxide) of the blood.
The “assisting circulation operation” refers to a case where blood circulates in the heart of a patient (subject) P to which the extracorporeal circulation device 1 is applied and gas exchange can be performed in the lungs of the patient P. Is to assist the blood circulation. Some devices have a function of performing a gas exchange operation on blood.

By the way, the extracorporeal circulation device 1 shown in FIG. 1 according to the present embodiment is used, for example, when performing cardiac surgery on a patient P.
Specifically, for example, a centrifugal pump 3 which is a pump unit of the extracorporeal circulation device 1 is operated to remove blood from the vein (large vein) of the patient P, and perform gas exchange in the blood by the artificial lung 2 to obtain blood. After performing the oxygenation of the above, “extracorporeal blood circulation in the artificial lung” is performed to return the blood to the artery (aorta) of the patient P again. That is, the extracorporeal circulation device 1 is a device that substitutes for the heart and lungs.

The extracorporeal circulation device 1 has the following configuration.
That is, as shown in FIG. 1, the extracorporeal circulation device 1 has a “circulation circuit 1R” for circulating blood, and the circulation circuit 1R is an artificial heart-lung machine, for example, “artificial lung 2”, “centrifugal pump 3”. For example, "drive motor 4,""vein side cannula (blood removal side cannula) 5,""artery side cannula (blood supply side cannula) 6," and extracorporeal circulation management unit It has a controller 10. The centrifugal pump 3 is also called a blood pump, and a pump other than the centrifugal pump can be used.

Then, the venous cannula (bleeding cannula) 5 in FIG. 1 is inserted from the femoral vein, and the tip of the venous cannula 5 is placed in the right atrium. The arterial cannula (blood sending cannula) 6 is inserted from the femoral artery via the connector 9 in FIG. The venous cannula 5 is connected to the centrifugal pump 3 via a connector 8 using a blood removal tube 11. The blood removal tube (also referred to as a “blood removal line”) 11 is a conduit for sending blood.
When the drive motor 4 operates the centrifugal pump 3 according to the command SG of the controller 10, the centrifugal pump 3 removes the blood that has been removed from the blood removal tube 11 and passed through the artificial lung 2, to the blood delivery tube 12 (“liquid delivery line”). .).).
The blood removal tube 11 and the blood supply tube 12 are examples of a tube unit.

The oxygenator 2 is arranged between the centrifugal pump 3 and the blood feeding tube 12. The oxygenator 2 introduces oxygen gas as shown in FIG. 1 and performs a gas exchange operation (addition of oxygen and / or removal of carbon dioxide) to the blood.
The oxygenator 2 is, for example, a membrane oxygenator, but a hollow fiber membrane oxygenator is particularly preferably used. The blood feeding tube 12 is a conduit connecting the artificial lung 2 and the arterial cannula 6.
The blood removal tube 11 and the blood supply tube 12 are made of a highly transparent and flexible synthetic resin such as vinyl chloride resin or silicone rubber, and have an outer diameter of about 14 mm and an inner diameter of about 10 mm. Including about 1 to 2% by weight of a benzotriazole-based UVA (hindered amine-based light stabilizer) having an excellent initial color tone and a high UV-absorbing ability, in addition to the agent, prevents UV deterioration due to fluorescent lamps and the like in a room. , Improve safety.
In the blood removal tube 11, blood flows in the V direction, and in the blood feeding tube 12, blood flows in the W direction.

In addition, the extracorporeal circulation device 1 has, for example, a “flow rate sensor 14” as a measurement unit in the blood feeding tube 12. The flow rate sensor 14 is a sensor for measuring a flow rate value of the blood passing through the blood feeding tube 12, and is a sensor for detecting an abnormality in the flow rate value.
The power required to operate the flow sensor 14 is supplied from a power supply battery mounted on the flow sensor 14.
The abnormal flow rate value is caused by the kink of the tube of the circulation line 1R, the rotation speed of the drive motor 4 and the centrifugal pump 3 is reduced, the pressure loss is increased, and the blood circulation in the circulation line 1R is poor. This may cause the patient to experience hypoxia and the like.
For this reason, the flow sensor 14 and the controller 10 need to communicate quickly. Therefore, the flow sensor 14 and the controller 10 are configured to be able to communicate with each other as described below.

FIG. 2 is a schematic sectional view of the blood supply tube 12 and the blood removal tube 11 of FIG. As shown in FIG. 2, a conduit 12a for circulating blood is formed at the center thereof, and a plurality of, for example, two conductive portions 13a and 13b made of a conductive material are formed on an outer wall portion 12b. It is buried.
The conductive portions 13a and 13b have a substantially arc-shaped cross section, and are buried throughout the blood feeding tube 12 and the blood removal tube 11 in the longitudinal direction.
That is, the conductive portions 13a and 13b are configured to exhibit the same function as the communication cable.
In this embodiment, the blood removal tube 11 and the blood supply tube 12 are connected to the venous cannula 5 and the arterial cannula 6 via connectors 8 and 9 as shown in FIG. For this reason, the conductive parts 13a and 13b arranged in the blood removal tube 11 and the blood supply tube 12 are isolated from the human body of the patient P by these connectors 8 and 9, thereby ensuring safety. .

In the present embodiment, conductive portions 13a and 13b do not contact each other, and even if one terminal described later is arranged between conductive portions 13a and 13b, they contact conductive portions 13a and 13b at the same time. It is preferable to arrange them not to be.
In other words, in other words, it is preferable that the angle formed by the virtual lines H1 and H2 connecting the both ends of the conductive portions 13a and 13b and the center point of the blood feeding tube 12 is 90 degrees or more and less than 120 degrees.

Further, in the present embodiment, two conductive portions 13a and 13b are arranged, one of which is used for a signal line transmitting a signal level, and the other is used for a clock.
Further, as shown in FIG. 1, in the present embodiment, for example, a controller-side sensor signal receiving unit 15 which is a management device-side communication unit that is connected to the controller 10 and can be attached to the blood supply tube 12 is arranged. .

FIG. 3 is a schematic perspective view showing the controller-side sensor signal receiving unit 15 of FIG.
As shown in FIG. 3, the controller-side sensor signal receiving section 15 has an upper housing 15a and a lower housing 15b, and has a tube opening 15c at the center thereof into which the blood feeding tube 12 can be inserted. .

Further, inside the tube opening 15c, for example, four terminals A1, A2, B1 and B2 which are communication unit side terminal portions are arranged so as to protrude.
Of these, a pair of terminals A2 is formed at diametrically opposite positions on the side facing the terminals A1. Further, a pair of terminals B2 is formed at a position directly opposite to the terminal B1. These terminals have needles or blade-like tips at the ends oriented toward the tube.

Therefore, when the blood supply tube 12 is arranged in the tube opening 15c, these four terminals A1 and the like are inserted into the blood supply tube 12, and depending on the arrangement state, are connected to the conductive parts 13a and 13b in FIG. It has a possible configuration.
In the present embodiment, when one or two terminals A1 and the like of one of the conductive portions 13a and 13b in FIG. 2 are arranged in the tube opening 15c of the controller-side sensor signal receiving portion 15 in FIG. It has a connectable structure.

Specifically, as shown in a partial enlarged cross-sectional view of the terminal A2 in FIG. 3, the terminal A2 and the like are projected from the lower housing 15b (or the upper housing 15a) toward the tube opening 15c by a spring 15d. Being energized.
In addition, a hinge 15 e is arranged on one side of a connection portion between the upper housing 15 a and the lower housing 15 along the longitudinal direction of the blood feeding tube 12. For this reason, the upper housing 15a and the lower housing 15 are configured such that the hinge 15e can be separated from the fulcrum.

Further, as shown in FIG. 3, two hooks 15f, 15f are formed on the upper housing 15a opposite to the hinge 15e. On the other hand, the lower housing 15b is formed with two hook engaging portions 15g, 15g that engage with the two hooks 15f, 15f of the upper housing 15a.
Therefore, when a person in charge or the like attaches the controller-side sensor signal receiving unit 15 to the blood feeding tube 12, the upper housing 15a is separated from the lower housing 15b (opening direction) with the hinge 15e as a fulcrum. The blood supply tube 12 is moved and, in this state, the blood supply tube 12 is arranged in the tube opening 15c. Thereafter, the upper housing 15a is moved in a direction to close around the hinge 15e as a fulcrum, and is moved until it contacts the lower housing 15b.
Thus, the person in charge can easily attach the controller-side sensor signal receiving unit 15 to the blood feeding tube 12.

  At this time, the terminals A2 and the like are urged toward the blood feeding tube 12 by the urging force of the spring 15d against the blood feeding tube 12 arranged in the tube opening 15c. Therefore, when the conductive portions 13a and 13b are arranged at corresponding positions, the terminal A2 and the like can be reliably brought into contact with the conductive portions 13a and 13b.

Further, as shown in FIG. 3, in the present embodiment, for example, the lower housing 15b engages with the hooks 15f, 15f of the upper housing 15a and the hook engaging portions 15g, 15g of the lower housing 15b. Are released, two release pieces 15h, 15h are formed.
Therefore, for example, when removing the controller-side sensor signal receiving unit 15 from the blood supply tube 12, the person in charge can easily open the upper housing 15 a and the lower housing 15 b, thereby easily controlling the controller. The side sensor signal receiving unit 15 can be removed from the blood feeding tube 12.

  The flow sensor 14 in FIG. 1 also has a tube opening formed in the center thereof, like the controller-side sensor signal receiving unit 15 in FIG. 3, and can be connected to the conductive units 13a and 13b in the blood feeding tube 12. For example, sensor-side terminals E1, E2, F1, and F2, which are measurement-unit-side terminals, are arranged in the same manner as the terminals A1, A2, B1, and B2.

Therefore, the controller 10 is configured to be able to communicate with the flow sensor 15 via the conductive portions 13a and 13b.
The relationship between the terminals A1 and the like, the sensor-side terminals E1 and the like, and the conductive portions 13a and 13b will be described later.

  By the way, when an abnormal flow rate or the like occurs in the blood in the blood feeding tube 12 or the like, the clamp 7 (tube closing device) in FIG. 1 is used to prevent the blood from being sent to the patient P in the abnormal state. It is configured to be able to be closed urgently by using.

The controller 10 and the flow sensor 14 of the extracorporeal circulation device 1 shown in FIG. 1 have a computer, and the computer is a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read), not shown.
Only Memory) and these are connected via a bus.

FIG. 4 is a schematic block diagram illustrating a main configuration of the controller 10 of FIG.
As shown in FIG. 4, the controller 10 includes a “controller control unit 21”, and the controller control unit 21 uses the “controller-side communication device 22” for communicating with the controller-side sensor signal receiving unit 15 of FIG. Control.
The communication between the “controller-side communication device 22” and the “controller-side sensor signal receiving unit 15” is performed by wire or wireless. In the case of wire, it is preferable to perform the communication by RS232C which is strong against electromagnetic noise. It is preferable to use infrared communication, but it is necessary to mount a power supply battery in the controller-side sensor signal receiving unit 15. Since no signal cable is used, the entire device is orderly.
Further, the controller control unit 21 is configured to control a touch panel 23 formed of a color liquid crystal, an organic EL, or the like, which also functions as a display unit and an input unit.

Further, the controller control section 21 is configured to control the “controller main body 24”. The controller main body 24 is a device that controls the blood circulation and the like of the extracorporeal circulation device 1.
The controller control unit 21 also controls a “square wave detection device 25” for detecting a square wave of a signal output from the terminal A1 or the like.

Further, the controller control unit 21 also controls the “first information storage unit 30” and the “second information storage unit 40” illustrated in FIG.
FIGS. 5 and 6 are schematic block diagrams showing the main configurations of the first various information storage units 30 and the second various information storage units 40, respectively. The specific contents of these will be described later.

FIG. 7 is a schematic block diagram showing a main configuration of the flow sensor 15 of FIG.
As shown in FIG. 7, the flow sensor 15 includes a “flow sensor control unit 51”, and the flow sensor control unit 51 communicates with the “sensor-side communication device 52” and the “sensor-side terminals E1, E2, F1, F2 ".
In addition, the sensor-side control unit 51 controls the “sensor-side terminal signal detection device 53”, the “clock signal input terminal storage unit 54”, the “single line identification unit 55”, and the “reception data storage unit 56” illustrated in FIG. However, these configurations will be described later.

FIGS. 8 and 9 are schematic flowcharts showing main operation examples and the like of the extracorporeal circulation device 1 of FIG. In the following, description will be given along these flowcharts, and also the configuration of FIGS. 1 to 7 will be described.
In the present embodiment, a description will be given below using an example in which a person in charge assembles the extracorporeal circulation device 1 shown in FIG.
First, in step ST (hereinafter referred to as “ST”) 1 in FIG. 8, necessary information is stored in the controller 10 as a pre-process.
That is, the arrangement information of the terminal A1 and the like of the control-side sensor signal receiving section 15 in FIG. 3 and the conductive sections 13a and 13b on the blood supply tube 12 side shown in FIG. "Is stored.

Specifically, information indicating the positional relationship between the terminals A1, A2, B1, and B2 and the conductive portions 13a and 13b when the person in charge attaches the controller-side sensor signal receiving section 15 to the blood feeding tube 12 is stored. Have been.
In the present embodiment, the person in charge or the like receives the controller-side sensor signal so that the terminal A1 or the like of the controller-side sensor signal receiver 15 is arranged at a specific position with respect to the conductive portions 13a and 13b of the blood feeding tube 12. The part 15 is not attached to the blood supply tube 12. That is, the terminal A1 and the like and the conductive portions 13a and 13b when the controller-side sensor signal receiving unit 15 is mounted on the blood supply tube 12 are designed to be able to respond to mounting in any arrangement so as to be mounted blindly. The information on the relative positional relationship is stored in advance.

FIG. 10 is a schematic cross-sectional view showing a relative positional relationship between the terminals A1 and the like and the conductive parts 13a and 13b when the controller-side sensor signal receiving part 15 is mounted on the blood feeding tube 12.
As shown in FIG. 10, four patterns are stored in the “terminal and conductive part arrangement information storage unit 31” in FIG. Since the conductive portions 13a and 13b exhibit the same function even when their positions are reversed, the case where the conductive portions 13a and 13b are exchanged is also included in the pattern.

FIG. 10A is a schematic sectional view showing “pattern 1”. As shown in FIG. 10A, a terminal A1 and a terminal B1 are connected to one conductor 13a, and a terminal B2 and a terminal A2 are connected to the other conductor 13b.
FIG. 10B is a schematic sectional view showing “pattern 2”. As shown in FIG. 10B, only the terminal B1 is connected to one conductive portion 13a, only the terminal B2 is connected to the other conductive portion 13b, and the terminals A1 and A2 are not connected to the conductive portions 13a and 13b. Has become.
FIG. 10C is a schematic sectional view showing “pattern 3”. As shown in FIG. 10C, only the terminal A1 is connected to one conductive portion 13b, only the terminal A2 is connected to the other conductive portion 13a, and the terminals B1 and B2 are not connected to the conductive portions 13a and 13b. Has become.
FIG. 10D is a schematic sectional view showing “pattern 4”. As shown in FIG. 10D, a terminal A1 and a terminal B2 are connected to one conductive portion 13b, and a terminal B1 and a terminal A2 are connected to the other conductive portion 13a.

In this way, the controller 10 stores information on the expected relative positional relationship between the terminals A1 and the like and the conductive parts 13a and 13b when the controller-side sensor signal receiving unit 15 is mounted on the blood supply tube 12.
Next, the process proceeds to ST2 in FIG. In ST2, the person in charge assembles the extracorporeal circulation device 1 as shown in FIG. 1, and attaches the controller-side sensor signal receiving unit 15 to the blood supply tube 12.
At this time, it is sufficient for the person in charge to simply attach the controller-side sensor signal receiving unit 15 to the blood feeding tube 12, and to position the sensor signal receiving unit 15 at a specific position so as to match the positions of the conductive units 13 a and 13 b in the blood feeding tube 12. No need to match.
Therefore, the person in charge can easily and easily attach the controller-side sensor signal receiving unit 15 to the blood feeding tube 12.

Next, the process proceeds to ST3. In ST3, since it is not clear which pattern in FIG. 10 the controller-side sensor signal receiving section 15 is arranged with respect to the conductive sections 13a and 13b of the blood feeding tube 12, the arrangement state is automatically set in ST3 and below. judge.
First, in ST3, the controller 10 sets the terminal A2 of the controller-side sensor signal receiving unit 15 in FIG. 3 to the unconnected state, and inputs a signal from the terminal A1 disposed on the opposite side to the terminal A2.

Next, the process proceeds to ST4. In ST4, the rectangular wave detection device 25 of FIG. 4 operates to detect, for example, a rectangular wave, which is a signal output from another terminal, corresponding to a signal (an example of a specific signal) input from the terminal A1. .
Specifically, it is determined whether a rectangular wave is detected from the terminal B1 or the terminal B2 in FIG.
If it is determined in ST4 that a rectangular wave has been detected from the terminal B1 or the terminal B2, the process proceeds to ST5. In ST5, the rectangular wave detection device 25 stores the terminal that detected the rectangular wave, for example, the terminal B1 or the terminal B2 in the “rectangular wave detection terminal information storage unit 32” in FIG.

  When it is determined in ST4 that the rectangular wave is not output from the terminal B1 or B2, the process proceeds to ST6. In ST6, the rectangular wave detection device 25 stores information indicating that no rectangular wave is detected in the “square wave detection terminal information storage unit 32” in FIG.

  Next, the process proceeds to ST7. In ST7, the “pattern determination unit (program) 33” of FIG. 5 operates, and refers to the “square wave detection terminal information storage unit 32” and “terminal and conductive unit arrangement information storage unit 31” of FIG. The connection patterns between the terminals 13a and 13b and the terminals A1 and the like are searched and specified, and stored in the "search specified pattern storage unit 34" in FIG.

That is, when a rectangular wave is detected at the terminal B1, as shown in FIG. 10A, it is determined that the terminals A1 and B1 are connected to the conductive portion 13a, and is determined to be "pattern 1". “Pattern 1” is stored in the “search specific pattern storage unit 34”.
When a rectangular wave is detected at the terminal B2, as shown in FIG. 10D, it is determined that the terminal A1 and the terminal B2 are connected to the conductive portion 13b, and is determined to be “pattern 4”. “Pattern 4” is stored in the “search specific pattern storage unit 34”.
On the other hand, when the rectangular wave cannot be detected from the terminal, it is determined that the pattern is arranged as shown in FIG. 10B or 10C, and “Patterns 2 and 3” are stored in the “search specific pattern storage unit 34”. I do.

  As described above, in the present embodiment, the controller 10 outputs a signal from the terminal A1 and does not detect or detect the rectangular wave from the other terminal B1 or the like. The relative positional relationship between the terminals A1 and the like when mounted on the tube 12 and the conductive portions 13a and 13b can be automatically specified.

Next, the process proceeds to ST8. In ST8, the “used terminal determination unit (program) 41” of FIG. 6 operates, and refers to the “search specific pattern storage unit 34” and the “pattern corresponding used terminal information storage unit 35”.
The pattern corresponding use terminal information storage unit 35 stores information on which terminal is allocated to a signal line or a clock line in each of the patterns 1 to 4 in FIG.
Specifically, in the case of “Pattern 1” and “Pattern 4”, assuming that the terminals A1 and A2 use the terminal A1 as a signal line and the terminal A2 as a clock, and the terminals B1 and B2 are not connected. It is remembered.
In the case of “patterns 2 and 3”, it is stored that the terminals A1, B1 are used as signal lines and the terminals A2, B2 are used as clocks in the used terminals A1, A2, B1, B2.

For this reason, the “used terminal determination unit (program) 41” specifies the used terminal, the signal line, and the clock based on the “search specific pattern storage unit 34” and the “pattern corresponding used terminal information storage unit 35”. Is stored in the “information storage unit for use terminals 42”.
For example, in the case of “pattern 1”, the terminal A1 and the terminal A2 are selected, the terminal A1 is used as a signal line, the terminal A2 is used as a clock, and the terminal B1 and the terminal B2 are stored as an unconnected state.

Next, a communication process between the controller 10 and the flow sensor 14 in FIG. 1 will be described with reference to a flowchart in FIG.
First, the flow sensor 14 is attached to the blood feeding tube 12 as shown in FIG. At this time, the arrangement of the sensor-side terminals E1, E2, F1, and F2 of the flow sensor 14 is the same as the arrangement of the terminals A1, A2, B1, and B2 of the controller-side sensor signal receiving unit 15, as described above.
As described above, the flow sensor 14 having the sensor-side terminals E1 and the like is not required to perform a specific positioning like the controller-side sensor signal receiving unit 15, and is merely mounted on the blood feeding tube 12 to complete the mounting. .
For this reason, a person in charge can easily attach the flow sensor 14 and the extracorporeal circulation device 1 is easily assembled.

Next, the process proceeds to ST11. In ST11, the “controller-side data transmission unit (program) 43” in FIG. 6 operates, and the “used terminal etc. information storage unit 42”, “sensor identification information storage unit 44”, and “sensor transmission data” in FIG. Storage unit 45 ".
The "sensor identification information storage unit 44" contains identification information (sensor address) of the flow sensor 14 to be transmitted, and is used only when the sensor address of the flow sensor 14 that has received the signal corresponds to the sensor address. 14 responds.
The “transmission data storage unit for sensor 45” is transmission data such as a command to the target flow sensor 14.
In the present embodiment, for example, the flow rate sensor 14 has been described as an example of the measurement section. However, the “measurement section” of the present invention is not limited to the flow rate sensor 14, and may be an ordinary type in addition to the clamp 7 in FIG. 1 includes various sensors such as a “pressure sensor”, a “temperature sensor”, a “blood gas sensor”, and a “bubble sensor” which are not shown in FIG.

Therefore, the controller-side data transmission unit (program) 43 refers to the used terminal etc. information storage unit 42, the sensor identification information storage unit 44, and the sensor transmission data storage unit 45, for example, to set the terminal A2 to the clock, the terminal A1 Is a signal line, a clock signal is transmitted at a terminal A2, and a target sensor identification signal (sensor address) and transmission data for a sensor are transmitted to a terminal A1.
This clock signal is an example of the non-body signal, and transmission data for the sensor is an example of the body signal.

Next, the process proceeds to ST12. In ST12, the "sensor-side terminal signal detection device 53" of the flow sensor 14 of FIG. 7 operates, and the sensor-side terminals E1, E2, F1, and F2 of the flow sensor 14 receive clock signals (rectangular wave signals) from the controller 10. Detects whether or not has been received.
In ST12, when any of the sensor-side terminals E1, E2, F1, and F2 receives the clock signal, the process proceeds to ST13.
In ST13, the sensor-side terminal signal detection device 53 specifies the sensor-side terminal F2 or the like to which the clock signal (rectangular wave) has been input, and stores it in the “clock signal input terminal storage unit 54” in FIG.

Next, the process proceeds to ST14. In ST14, the “signal line specifying unit (program) 55” of FIG. 7 operates, and refers to the “clock signal input terminal storage unit 54” to refer to the terminal F2 or the like (directly opposite) that is paired with the stored sensor terminal F1 or the like. Waits for a command input using the terminal located at) as a signal line.
As described above, in the present embodiment, the flow sensor 14 having the sensor-side terminal E1 and the like is not mounted so as to be positioned at a specific position with respect to the conductive portions 13a and 13b in the blood feeding tube 12, and is simply mounted. Thus, the communication with the controller 10 can be automatically established.
Therefore, the labor of the person in charge of assembling the extracorporeal circulation device 1 is saved, and the attachment of the flow rate sensor 14 to the blood feeding tube 12 is facilitated.

In ST15 of FIG. 9, transmission data is received from the sensor terminal F2 or the like determined to be a signal line in ST14, and stored in the "reception data storage unit 56" of FIG.
Next, the process proceeds to ST16. In ST16, the flow sensor 14 determines whether the command of the received data is valid.
When it is determined in ST16 that the command is valid, the process proceeds to ST17, and a response to the command is transmitted on a signal line such as the terminal F2.
On the other hand, if the received command is not valid in ST16, the process proceeds to ST18, and the received data is discarded as abnormal data.

(Second embodiment)
FIG. 11 is a schematic diagram illustrating a main configuration of the extracorporeal circulation device 100 according to the second embodiment of the present invention.
Since many configurations of the extracorporeal circulation device 100 according to the present embodiment are common to the extracorporeal circulation device 1 according to the above-described first embodiment, the common components are denoted by the same reference numerals and the like, and description thereof will be omitted. Hereinafter, the differences will be mainly described.
As shown in FIG. 11, the drive motor 104 and the centrifugal pump 103 are configured to be detachable using a magnet or the like.
Then, as shown in FIG. 11, terminals C1, C2, D1, and D2 are formed on a connection surface 104a of the drive motor 104 with the centrifugal pump 103.

FIG. 12 is a schematic diagram showing an arrangement state of the terminals C1 and the like on the connection surface 104a of the drive motor 104.
As shown in FIG. 12, four terminals C1 and the like are formed, and these four terminals C1 and the like are arranged in the same manner as the terminals A1, A2, B1, and B2 of the above-described first embodiment. C1 and the like are formed so as to protrude toward the centrifugal pump 103 side.
As shown in FIG. 13, arc-shaped conductive portions 130a and 130b (an example of a pump-side conductive portion) made of a conductive material are formed on the side of the centrifugal pump 103 in FIG. It is configured to be connectable to one or two.
FIG. 13 is a schematic diagram showing conductive portions 130a and 130b formed on the connection surface of the centrifugal pump 103 with the drive motor 104.

The terminal C1 and the like are configured to be electrically connectable to the controller 10, and the conductive portions 130a and 130b are connected to the housing of the centrifugal pump 103 and the artificial lung connected mechanically and electrically to the centrifugal pump 103. It is configured such that it can be connected to the conductive portions 13a and 13b disposed inside the blood feeding tube 12 and the like via an electrical connection path arranged in the housing 2.
That is, the connection between the terminal C1 and the like and the controller 10 has a wiring inside the drive motor 104, while the conductive parts 130a and 130b of the centrifugal pump 103 and the conductive parts 13a and 13b arranged inside the blood feeding tube 12 are connected. The connection is also made by wiring inside or on the surface of the centrifugal pump 103, the artificial lung 2, and the like.
In addition, this wiring and each conductive part of the blood feeding tube 12 are connected one-to-one (for example, 130a and 13a, and 130b and 13b are connected so as to correspond to each other), and one end of each wiring on the blood feeding tube 12 side is connected to the blood feeding tube. The tube 12 is configured not to be connected over a plurality of conductive portions.

Therefore, in the present embodiment, unlike the first embodiment, a wire such as a cable is not disposed outside between the controller-side sensor signal receiving unit 15 and the controller 10.
That is, in the present embodiment, since a communication cable or the like between the flow sensor 14 and the controller 10 is not exposed to the outside at all, a person in charge of assembling the extracorporeal circulation device 100 requires such a cable or the like. Since there is no need to consider the routing and the like, the extracorporeal circulation device 100 is extremely easy to assemble.

  Further, the terminal C1 and the like on the drive motor 104 side and the conductive parts 130a and 130b on the centrifugal pump 104 side are connected to the terminal A1 and the like of the controller-side sensor signal receiving part 15 of the first embodiment and the conductive and Since the relationship is the same as that of the unit 13a and the like, a terminal and the like that can communicate are automatically determined in the same manner.

FIG. 14 is a schematic diagram showing a pattern similar to the pattern shown in FIG. 10 of the first embodiment.
14 (a), (b), (c) and (d) show “pattern 1” in FIG. 10 (a), “pattern 2” in (b), “pattern 3” in FIG. (D) “Pattern 4” is shown.
Therefore, the communication between the controller 10 and the flow sensor 14 is performed through the same steps as in the first embodiment.

(Modification of First Embodiment and Second Embodiment)
FIG. 15 is a schematic diagram illustrating a modified example of the terminal A1 and the like according to the first embodiment.
As shown in FIG. 15, the terminals G1, G2, I1, and I2 may be configured so as not to protrude from the controller-side sensor signal receiving unit 15.
FIG. 16 is a schematic diagram illustrating a modification of the conductive portion 13a and the like according to the first embodiment and the like. As shown in FIG. 16, conductive portions 230a and 230b may be formed on the surface of the blood feeding tube 12.

Further, in this embodiment, the number of terminals is four, but the present invention is not limited to this, and for example, six terminals may be provided.
Further, in the present embodiment, the number of the conductive portions is two, but the number of the present invention may be three or more.
When a plurality of conductive portions are provided, the following relationship is preferably satisfied. That is. Assuming that the angle α between H1 and H2 in FIG. 2 is not less than 60 degrees and less than 120 degrees, and the angle α of one conductive part and the number of conductive parts is N, the angle α is less than “360 degrees / N” and “ 360 degrees / 2N "or more.
That is, it is required that the conductive portion is always arranged so as to be connectable to one or more and less than three terminals.

  Incidentally, the present invention is not limited to the above-described embodiment. An exposed portion where the conductive portion is exposed to the outside may be formed in the longitudinal direction of the blood feeding tube 12 and the like in the first embodiment and the like. Further, a conductive portion may be formed by applying a conductive plastic material to the surface of the blood feeding tube 12 or the like.

  1, 100: extracorporeal circulation device, 2: artificial lung, 3, 103: centrifugal pump, 4, 104: drive motor, 5: venous cannula (bleeding cannula), 6 ... arterial side cannula (blood supply side cannula), 7 ... clamp, 8, 9 ... connector, 10 ... controller, 11 ... blood removal tube, 12 ... blood supply tube, 12a ... conduit, 12b ... wall, 13a, 13b, 130a, 130b, 230a, 230b ... conductive part, 14 ... flow sensor, 15 ... controller-side sensor signal receiving part, 15a ..Upper housing, 15b lower housing, 15c tube opening, 15d spring, 15e hinge, 15f hook, 15g hook engaging portion, 15h ... Release piece, 21 ... Controller controller, 22: controller communication device, 23: touch panel, 24: controller body, 25: rectangular wave detection device, 30: first various information storage units, 31 ... -Terminal and conductive part arrangement information storage part, 32 ... rectangular wave detection terminal information storage part, 33 ... pattern determination part (program), 34 ... search specific pattern storage part, 35 ... use corresponding to pattern Terminal information storage unit, 40 ... second various information storage units, 41 ... used terminal determination unit (program), 42 ... used terminal etc. information storage unit, 43 ... controller side data transmission unit (Program), 44: Sensor identification information storage unit, 45: Sensor transmission data storage unit, 51: Flow sensor control unit, 52: Sensor communication device, 53: Sensor terminal Faith Detection device, 54: Clock signal input terminal storage unit, 55: Signal line identification unit (program), 56: Received data storage unit, 104a: Connection surface, A1, A2, B1, B2, C1, C2, D1, D2, G1, G2, I1, I2 ... terminal, E1, E2, F1, F2 ... sensor side terminal, 1R ... circulation circuit, P ... patient

Claims (4)

An extracorporeal circulation management unit that manages extracorporeal blood circulation,
A tube portion for guiding the flow of blood in the extracorporeal circulation,
Having a measurement unit for measuring blood in the tube portion,
A plurality of conductive parts for communication between the measurement part and the extracorporeal circulation management part are formed in the tube part,
A management unit-side communication unit for connecting to the conductive unit and transmitting a signal from the measurement unit to the extracorporeal circulation management unit is arranged, and the management unit-side communication unit includes a plurality of communication units for connecting to the conductive unit. Having a communication section side terminal section including a terminal of
When the management unit-side communication unit is attached to the tube unit, a specific signal is output from the specific terminal of the communication unit-side terminal unit toward the tube unit, and the specific signal is received or not received. An extracorporeal circulation device characterized in that arrangement information of the plurality of conductive parts with respect to the communication unit side terminal is specified based on position information of another terminal of the communication unit side terminal. The measurement section has a measurement section side terminal section including a plurality of terminals connectable to the conductive section when the measurement section is mounted on the tube section,
The management unit side communication unit, when transmitting the non-main body signal and the main body signal respectively in the conductive unit, the measurement unit side terminal unit of the measurement unit attached to the tube unit, the non-main body signal Based on the received position information of the terminal of the measuring unit side terminal unit, the terminal of the measuring unit side terminal unit that receives the main body signal is specified, and the main body signal is received. The extracorporeal circulation device according to claim 1. A pump section for circulating blood in the tube section,
A motor unit for driving the pump unit,
The pump unit is connected to the tube unit, and the motor unit is connected to the extracorporeal circulation management unit,
These pump section and motor section are configured to be detachable,
The communication unit side terminal unit is formed on a side of the motor unit that contacts the pump unit,
A pump-side conductive portion is formed on a side of the pump portion that contacts the motor portion,
The pump-side conductive portion has the same shape as the conductive portion,
Wherein the pump-side conductive portion and the communication unit side terminal portion, respectively, extracorporeal circulation apparatus according things 請 Motomeko 2 you wherein connected to the conductive portion of the tube portion and the extracorporeal circulation management unit . The specific signal is a square wave,
One of the plurality of conductive parts and / or one of the pump-side conductive parts among the plurality of pump-side conductive parts is connected to one or two terminals of the measuring part-side terminal part and the communication part side. The extracorporeal circulation device according to claim 3, wherein the extracorporeal circulation device is configured to be connectable to a terminal of the terminal portion.

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