WO2016047379A1 - Extracorporeal circulation device - Google Patents

Abstract

　The present invention is an extracorporeal circulation device wherein complexity of handling of cables and other components is overcome, and the extracorporeal circulation device is configured so that connection for communication and the like between a measurement part (14) such as a flow rate sensor and an extracorporeal circulation management part (10) such as a controller can be facilitated. The present invention has an extracorporeal circulation management part (10) for managing extracorporeal circulation of blood, a tube part (12) for guiding blood flow in extracorporeal circulation, and a measurement part (14) for measuring blood in the tube part, and a plurality of electroconductive parts (13a, 13b) for communication between the measurement part (14) and the extracorporeal circulation management part (10) are formed in the tube part (12).

Description

Extracorporeal circulation device

The present invention relates to an extracorporeal circulation device that performs extracorporeal circulation of a patient's blood, for example.

Conventionally, for example, during surgery, percutaneous cardiopulmonary support (PCPS) has been used, and this percutaneous cardiopulmonary support generally uses a centrifugal pump and a membrane oxygenator. Cardiopulmonary assistance is performed via the femoral arteriovenous device by means of an artificial cardiopulmonary device (extracorporeal circulation device) of a circuit.
For this reason, an extracorporeal circulation apparatus having an artificial heart-lung machine or the like is used to circulate the patient's blood outside the body when blood supply to the patient is necessary during surgery or the like (for example, Patent Document 1).
Such an extracorporeal circulation apparatus needs to monitor the flow rate value of the circulating blood, and therefore, the tube in which the blood circulates has a flow sensor or the like for measuring the flow rate of the blood in the tube. Has been placed.
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 the so-called handling of how to arrange the cable connecting the controller and the flow rate sensor becomes complicated.
On the other hand, when wireless communication is performed without using a cable, there is a problem that diffuse reflection easily occurs in a shielded environment such as an operating room and power consumption increases.
Further, in the case of wireless communication, when the extracorporeal circulation device is used in an airplane, there is a risk of adversely affecting other airplane equipment.
In addition, since the extracorporeal circulation device is used after being combined with a controller, a tube, a flow rate sensor, and the like, there has also been a demand that the communication connection setting procedure between the flow rate sensor and the controller is preferably simple.

Therefore, the present invention eliminates the complexity of handling cables and the like, and enables easy connection of communication between a measuring unit such as a flow sensor and an extracorporeal circulation management device such as a controller. An object is to provide a circulation device.

The object is to provide an extracorporeal circulation management unit for managing the extracorporeal circulation of blood, a tube unit for guiding the blood flow in the extracorporeal circulation, and a measurement unit for measuring the blood in the tube unit. The tube part is formed with an extracorporeal circulation apparatus in which a plurality of conductive parts for communication between the measurement part and the extracorporeal circulation management part are formed.

According to the said structure, communication between measuring parts, such as a flow sensor, and extracorporeal circulation management parts, such as a controller, is performed via the electroconductive part of a tube part.
That is, many parts such as a conventional cable can be replaced with a conductive part arranged in the tube part.
For this reason, since it is not necessary to connect between a measurement part and an extracorporeal circulation management part with a cable etc. unlike the past, the complexity of handling of a cable etc. can be eliminated.

Preferably, 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 disposed, and the management unit side communication unit is connected to the conductive unit. A communication unit side terminal portion including a plurality of terminals for,
When the management unit side communication unit is attached to the tube unit, the specific signal is output from the specific terminal of the communication unit side terminal unit to the tube unit, and the specific signal is received or not received. Based on position information of other terminals of the communication unit side terminal unit, arrangement information of the plurality of conductive units with respect to the communication unit side terminal unit is specified.

According to the said structure, when the management part side communication part is mounted | worn with the tube part, the specific signal is output toward the tube part from the specific terminal of the communication part side terminal part, and the communication which receives or does not receive a specific signal Based on the positional information of the other terminals of the part side terminal part, the arrangement information of the plurality of conductive parts with respect to the communication part side terminal part is specified.
Therefore, it is possible to automatically identify a communicable conductive part and the like by simply attaching the management part side communication part having the communication part side terminal part to the tube part, thereby enabling communication.
For this reason, the person in charge of assembling the extracorporeal circulation device does not need to place the management unit side communication unit at a specific position when attaching the management unit side communication unit to the tube unit. The parts can be easily connected.

Preferably, the measurement unit includes a measurement unit side terminal unit including a plurality of terminals connectable to the conductive unit when the measurement unit is attached to the tube unit, and the management unit side communication unit is When the main body signal and the main body signal are transmitted by the different conductive parts, the measurement unit side terminal part of the measurement unit attached to the tube part is configured to receive the non-main body signal. Based on the terminal position information, the terminal of the measurement unit side terminal unit that receives the main body signal is specified, and the main body signal is received.

According to the said structure, the management part side communication part transmits non-main body signals, such as a clock signal, and main body signals, such as transmission data, by a respectively different electroconductive part.
On the other hand, the measurement unit side terminal unit of the measurement unit attached to the tube unit is a terminal of the measurement unit side terminal unit that receives the main body signal based on the position information of the terminal of the measurement unit side terminal unit that has received the non-main body signal. And a main body signal is received.
Therefore, it is possible to communicate with the extracorporeal circulation management device via the management unit side communication unit even if the measurement unit having the measurement unit side terminal unit is not attached 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 attaching the measuring unit to the tube unit at a specific position, so that the measuring unit can be easily connected to the tube unit. 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, the pump unit is connected to the tube unit, and the motor unit is connected to the external body. The pump unit and the motor unit are detachably connected to the circulation management unit, the communication side terminal unit is formed on the side of the motor unit that contacts the pump unit, and the motor of the pump unit The pump-side conductive part is formed on the side in contact with the part, the pump-side conductive part has the same shape as the conductive part, and the communication-side terminal part and the pump-side conductive part are respectively connected to the external body It is connected with the circulation management part and the conductive part of the tube part.

According to the above 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, the conductive unit of the tube unit, etc. There is no need to use a wired cable or the like when performing communication between them.
Therefore, when assembling the extracorporeal circulation device, the person in charge or the like does not have to consider the handling of the cable or 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 the conductive portions and / or one of the plurality of the pump-side conductive portions has one or two of the measurements. It is the structure which can be connected to the terminal of a part side terminal part, and the terminal of the said communication part side terminal part.

As described above, according to the present invention, the troublesome handling of cables and the like is eliminated, and communication and the like are easily connected between the measurement unit such as the flow sensor and the extracorporeal circulation management device such as the controller. Therefore, there is an advantage that an extracorporeal circulation device that can be performed is provided.

It is the schematic which shows the main structures of the extracorporeal circulation apparatus which concerns on the 1st Embodiment of this invention. It is a schematic sectional drawing of the blood feeding tube and blood removal tube of FIG. It is a schematic perspective view which shows the controller side sensor signal receiving part of FIG. It is a schematic block diagram which shows the main structures of the controller of FIG. It is a schematic block diagram which shows the main structures of a 1st information storage part. It is a schematic block diagram which shows the main structures of a 2nd information storage part. It is a schematic block diagram which shows the main structures of the flow sensor of FIG. It is a schematic flowchart which shows the main operation examples etc. of the extracorporeal circulation apparatus of FIG. It is another schematic flowchart which shows the main operation examples etc. of the extracorporeal circulation apparatus of FIG. It is a schematic sectional drawing which shows the relative positional relationship of a terminal and an electroconductive part when a controller side sensor signal receiving part is mounted | worn with the blood-feeding tube. It is the schematic which shows the main structures of the extracorporeal circulation apparatus concerning the 2nd Embodiment of this invention. It is the schematic which shows the arrangement | positioning state of the terminal in the connection surface of a drive motor. It is the schematic which shows the electroconductive part formed in the centrifugal pump side. It is the schematic which shows the pattern similar to the pattern shown in FIG. 10 of 1st Embodiment. It is the schematic which shows the modification of the terminal of 1st Embodiment. It is the schematic which shows the modification of electroconductive parts, such as 1st Embodiment.

DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiments described below are preferred specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these embodiments.

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

By the way, the extracorporeal circulation apparatus 1 shown in FIG. 1 according to the present embodiment is used, for example, when a patient P performs cardiac surgery.
Specifically, for example, the centrifugal pump 3 which is a pump unit of the extracorporeal circulation device 1 is operated, blood is removed from the vein (vena cava) of the patient P, and blood is exchanged by the artificial lung 2 to exchange blood. After the oxygenation is performed, the “artificial lung extracorporeal blood circulation” is performed in which the blood is returned to the artery (aorta) of the patient P again. That is, the extracorporeal circulation device 1 is a device that performs substitution of the heart and lungs.

The extracorporeal circulation apparatus 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 ”,“ venous side cannula (blood removal side cannula) 5 ”,“ arterial side cannula (blood feeding side cannula) 6 ”, and extracorporeal circulation management unit, for example, A controller 10 is included. The centrifugal pump 3 is also called a blood pump, and pumps other than the centrifugal type can be used.

1 is inserted through the femoral vein, and the distal end of the venous cannula 5 is placed in the right atrium. An artery side cannula (blood supply side cannula) 6 is inserted from the femoral artery via the connector 9 of FIG. The venous cannula 5 is connected to the centrifugal pump 3 through a connector 8 using a blood removal tube 11. A blood removal tube (also referred to as “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 blood from the blood removal tube 11 and passed through the oxygenator 2 into the blood supply tube 12 (“liquid supply line”). It is also configured to return to the patient P via “.
The blood removal tube 11 and the blood supply tube 12 are examples of tube portions.

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

Further, the extracorporeal circulation device 1 has, for example, a “flow sensor 14” as a measurement unit in the blood supply tube 12. The flow sensor 14 is a sensor for measuring the flow value of blood passing through the blood supply tube 12 and is a sensor for detecting an abnormality in the flow value.
Electric power required for the operation of the flow sensor 14 is supplied from a power supply battery mounted on the flow sensor 14.
An abnormality in the flow rate value is caused by a kink in the tube of the circulation line 1R, a decrease in the rotation speed of the drive motor 4 and the centrifugal pump 3, an increase in pressure loss, and the like, causing poor circulation of blood in the circulation line 1R. This may cause hypoxia or the like in the patient.
For this reason, it is necessary for the flow sensor 14 and the controller 10 to communicate quickly. Therefore, the flow sensor 14 and the controller 10 are configured to communicate with each other as described below.

FIG. 2 is a schematic cross-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 the outer wall portion 12b. Buried.
The conductive portions 13a and 13b have a substantially arc shape in cross section, and are embedded throughout the longitudinal direction of the blood supply tube 12 and the blood removal tube 11.
That is, the conductive portions 13a and 13b are configured to exhibit the same function as the communication cable.
In the present 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 portions 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, and the safety is ensured. .

In the present embodiment, the conductive portions 13a and 13b are not in contact with each other, and even if one terminal to be described later is disposed between the conductive portions 13a and 13b, the conductive portions 13a and 13b are simultaneously in contact with the conductive portions 13a and 13b. It is preferable to arrange so that it does not.
In other words, it is preferable that the angle formed by imaginary lines H1 and H2 connecting 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.

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

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

Further, for example, four terminals A1, A2, B1, and B2 which are communication unit side terminal portions are arranged so as to protrude inside the tube opening 15c.
Among these, the terminal A2 used as a pair is formed in the opposite position which is the side facing the terminal A1. Also, a pair of terminals B2 are formed at opposite positions on the side facing the terminal B1. These terminals have a needle or blade-like shape at the tip oriented to the tube side.

For this reason, when the blood feeding tube 12 is arranged in the tube opening 15c, these four terminals A1 and the like are inserted into the blood feeding tube 12, and depending on the arrangement state, they are connected to the conductive portions 13a and 13b in FIG. It has a possible configuration.
In the present embodiment, one or two terminals A1 or the like are provided for one of the conductive portions 13a and 13b in FIG. 2 when 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 the partial enlarged cross-sectional view of the terminal A2 in FIG. 3, the terminal A2 and the like protrude from the lower housing 15b (or the upper housing 15a) to the tube opening 15c side by the spring 15d. It is energized.
In addition, a hinge 15e is disposed along the longitudinal direction of the blood feeding tube 12 on one side of a connection portion between the upper housing 15a and the lower housing 15. 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.

Furthermore, as shown in FIG. 3, two hooks 15f and 15f are formed on the upper casing 15a opposite to the hinge 15e. On the other hand, the lower housing 15b is formed with two hook engaging portions 15g and 15g that engage with the two hooks 15f and 15f of the upper housing 15a.
Therefore, when the 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 with the hinge 15e as a fulcrum (opening direction). In this state, the blood feeding tube 12 is placed in the tube opening 15c. Thereafter, the upper casing 15a is moved in a direction to close the hinge 15e as a fulcrum, and is moved until it comes into contact with the lower casing 15b.
Thereby, the person in charge or the like can easily attach the controller-side sensor signal receiving unit 15 to the blood feeding tube 12.

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

As shown in FIG. 3, in the present embodiment, for example, the lower casing 15b is engaged with the hooks 15f and 15f of the upper casing 15a and the hook engaging portions 15g and 15g of the lower casing 15b. Two release pieces 15h, 15h for releasing the are formed.
Therefore, the person in charge or the like can easily open the upper housing 15a and the lower housing 15b when removing the controller-side sensor signal receiving unit 15 from the blood feeding tube 12, for example. The side sensor signal receiver 15 can be detached from the blood supply tube 12.

Also, the flow sensor 14 of FIG. 1 has a tube opening formed in the center thereof, similar to the controller-side sensor signal receiver 15 of FIG. 3, and can be connected to the conductive portions 13a and 13b in the blood feeding tube 12. For example, sensor side terminals E1, E2, F1, and F2, which are measurement 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 terminal A1 and the like, the sensor side terminal E1 and the like, and the conductive portions 13a and 13b will be described later.

By the way, in order to prevent blood from being sent to the patient P in such an abnormal state when an abnormal flow rate occurs in the blood in the blood supply tube 12 or the like, the clamp 7 (tube occlusion device) in FIG. It becomes the structure which can be obstructed urgently using.

The controller 10 and the flow rate sensor 14 of the extracorporeal circulation apparatus 1 shown in FIG. 1 have a computer. The computer includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read).
These are connected via a bus.

FIG. 4 is a schematic block diagram showing the 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 communicates with the controller-side sensor signal receiving unit 15 of FIG. To 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. However, in the case of wired, it is preferably performed by RS232C which is strong against electromagnetic noise. Although it is preferable to use infrared communication, it is necessary to mount a power battery in the controller-side sensor signal receiver 15. Since the signal cable is not used, the entire apparatus 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 that serves as a display unit and an input unit.

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

Furthermore, the controller control unit 21 also controls the “first information storage unit 30” and the “second information storage unit 40” shown in FIG.
FIGS. 5 and 6 are schematic block diagrams showing main configurations of the first various information storage unit 30 and the second various information storage unit 40, respectively. Specific contents thereof will be described later.

FIG. 7 is a schematic block diagram showing the main configuration of the flow sensor 15 of FIG.
As shown in FIG. 7, the flow sensor 15 has a “flow sensor control unit 51”, and the flow sensor control unit 51 includes “sensor side communication device 52”, “sensor side terminals E 1, E 2, F1, F2 "are controlled.
Further, the sensor-side control unit 51 controls the “sensor-side terminal signal detection device 53”, “clock signal input terminal storage unit 54”, “single line specifying unit 55”, and “reception data storage unit 56” shown in FIG. However, these configurations will be described later.

8 and 9 are schematic flow charts showing main operation examples of the extracorporeal circulation device 1 of FIG. The following description will be made along these flowcharts, and 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 the person in charge or the like 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 preliminary process.
That is, the arrangement information of the terminal A1 and the like of the control side sensor signal receiving unit 15 in FIG. 3 and the conductive parts 13a and 13b on the blood feeding tube 12 side shown in FIG. To remember.

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 or the like attaches the controller-side sensor signal receiving unit 15 to the blood feeding tube 12 is stored. Has 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 receiving unit 15 is arranged at a specific position with respect to the conductive parts 13a and 13b of the blood supply tube 12. The part 15 is not attached to the blood feeding tube 12. That is, since it is installed blindly, the terminal A1 and the conductive parts 13a and 13b when the controller-side sensor signal receiver 15 is attached to the blood feeding tube 12 so as to be able to cope with any arrangement are expected. The information on the relative positional relationship is stored in advance.

FIG. 10 is a schematic cross-sectional view showing the relative positional relationship between the terminal A1 and the like and the conductive portions 13a and 13b when the controller-side sensor signal receiving portion 15 is attached to 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. 5. Note that the conductive portions 13a and 13b perform the same function even when their positions are reversed, so that the pattern is also included when the conductive portions 13a and 13b are replaced.

FIG. 10A is a schematic cross-sectional view showing “Pattern 1”. As shown in FIG. 10A, the terminal A1 and the terminal B1 are connected to one conductor 13a, and the terminal B2 and the terminal A2 are connected to the other conductor 13b.
FIG. 10B is a schematic cross-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. It has become.
FIG. 10C is a schematic cross-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 terminal B1 and the terminal B2 are not connected to the conductive portions 13a and 13b. It has become.
FIG. 10D is a schematic sectional view showing “Pattern 4”. As shown in FIG. 10D, the terminal A1 and the terminal B2 are connected to one conductive portion 13b, and the terminal B1 and the terminal A2 are connected to the other conductive portion 13a.

In this manner, the controller 10 stores information on the expected relative positional relationship between the terminal A1 and the like and the conductive portions 13a and 13b when the controller-side sensor signal receiving portion 15 is attached to the blood feeding tube 12.
Next, the process proceeds to ST2 in FIG. In ST2, a person in charge or the like assembles the extracorporeal circulation device 1 as shown in FIG. 1 and attaches the controller-side sensor signal receiving unit 15 to the blood feeding tube 12.
At this time, it is sufficient for the person in charge or the like to simply attach the controller-side sensor signal receiving unit 15 to the blood feeding tube 12, and to be positioned at a specific position so as to match the positions of the conductive portions 13 a and 13 b in the blood feeding tube 12. There is no need to match.
Therefore, the person in charge or the like 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, it is unclear in which pattern in FIG. 10 the controller-side sensor signal receiving unit 15 is arranged with respect to the conductive parts 13a and 13b of the blood supply tube 12. Therefore, 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 in an unconnected state, and inputs a signal from the terminal A1 arranged on the opposite side facing the terminal A2.

Next, the process proceeds to ST4. In ST4, the rectangular wave detection device 25 in FIG. 4 operates to detect, for example, a rectangular wave that is a signal output from another terminal in response to a signal (an example of a specific signal) input from the terminal A1. .
Specifically, it is determined whether or not 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 is detected from the terminal B1 or 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 a rectangular wave is not output from the terminal B1 or the terminal B2, the process proceeds to ST6. In ST6, the rectangular wave detection device 25 stores information indicating that the rectangular wave is not detected in the “rectangular wave detection terminal information storage unit 32” in FIG.

Next, proceed to ST7. In ST7, the “pattern judgment unit (program) 33” in FIG. 5 operates and refers to the “rectangular wave detection terminal information storage unit 32” and the “terminal and conductive unit arrangement information storage unit 31” in FIG. The connection patterns between the terminals 13a and 13b and the terminal A1 and the like are searched for 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 terminal A1 and the terminal B1 are connected to the conductive portion 13a and are “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. 10 (d), it is determined that the terminal A1 and the terminal B2 are connected to the conductive portion 13b and are “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, “patterns 2 and 3” are stored in the “search specific pattern storage unit 34” as shown in FIG. 10B or 10C. To do.

As described above, in the present embodiment, by outputting a signal from the terminal A1 and not detecting or detecting the rectangular wave from the other terminal B1 or the like, the controller 10 causes the controller-side sensor signal receiving unit 15 to send blood. The relative positional relationship between the terminal A1 and the like and the conductive portions 13a and 13b when mounted on the tube 12 can be automatically specified.

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

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

Next, the communication process between the controller 10 and the flow sensor 14 in FIG. 1 will be described with reference to the flowchart in FIG.
First, the flow sensor 14 is attached to the blood supply tube 12 as shown in FIG. The arrangement of the sensor side terminals E1, E2, F1, and F2 of the flow rate sensor 14 at this time is the same as that 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 rate sensor 14 in which the sensor side terminal E1 and the like are arranged is not required to be positioned in the same manner as the controller side sensor signal receiving unit 15, and the mounting is completed simply by arranging it in the blood feeding tube 12. .
For this reason, a person in charge or the like can easily attach the flow sensor 14, and the assembly of the extracorporeal circulation device 1 becomes easy.

Next, the process proceeds to ST11. In ST11, the “controller side data transmission unit (program) 43” in FIG. 6 operates, and the “used terminal information storage unit 42”, “sensor identification information storage unit 44” and “sensor transmission data” in FIG. Refer to “Storage 45”.
This “sensor identification information storage unit 44” is identification information (sensor address) of the flow sensor 14 to be transmitted, and the flow sensor only when the sensor address of the flow sensor 14 that has received the signal corresponds to this sensor address. 14 is configured to respond.
The “sensor transmission data storage unit 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 unit. However, the “measurement unit” of the present invention is not limited to the flow rate sensor 14, and other than the clamp 7 in FIG. Various sensors such as “pressure sensor”, “temperature sensor”, “blood gas sensor”, and “bubble sensor” which are used in the extracorporeal circulation apparatus 1 but are not particularly illustrated in FIG. 1 are included.

Accordingly, the controller-side data transmission unit (program) 43 refers to the used terminal information storage unit 42, the sensor identification information storage unit 44, and the sensor transmission data storage unit 45, for example, the terminal A2 as a clock, and the terminal A1. Is a signal line, a clock signal is transmitted at the terminal A2, and a target sensor identification signal (sensor address) and transmission data for the sensor are transmitted to the terminal A1.
This clock signal is an example of a non-main body signal, and transmission data for a sensor is an example of a main 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 are clock signals (rectangular wave signals) from the controller 10. Is detected.
When any of the sensor side terminals E1, E2, F1, and F2 receives the clock signal in ST12, the process proceeds to ST13.
In ST13, the sensor-side terminal signal detection device 53 identifies the sensor-side terminal F2 or the like to which the clock signal (rectangular wave) is 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, refers to the “clock signal input terminal storage unit 54”, and stores the terminal F2 and the like paired with the stored sensor terminal F1 etc. Wait for command input using the terminal located at) as the signal line.
Thus, 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 the conductive portions 13a and 13b in the blood supply tube 12, but is simply mounted. Thus, communication with the controller 10 can be automatically established.
Therefore, the labor of the person in charge of assembling the extracorporeal circulation device 1 can be saved, and the flow sensor 14 can be easily attached to the blood supply tube 12.

In ST15 in FIG. 9, transmission data is received from the sensor terminal F2 or the like determined as a signal line in ST14, and stored in the “reception data storage unit 56” in FIG.
Next, the process proceeds to ST16. In ST16, the flow sensor 14 determines whether or not the received data command is valid.
If it is determined in ST16 that it is valid, the process proceeds to ST17, and a response to the command is transmitted on the 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 apparatus 100 according to the present embodiment are common to the extracorporeal circulation apparatus 1 according to the first embodiment described above, the description of the common configuration is omitted as the same reference numerals, Hereinafter, the difference will be mainly described.
As shown in FIG. 11, the drive motor 104 and the centrifugal pump 103 are configured to be detachable by a magnet or the like.
As shown in FIG. 11, terminals C1, C2, D1, and D2 are formed on the 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. FIG.
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 first embodiment described above, and the terminals C1 and the like are formed so as to protrude toward the centrifugal pump 103 side.
Further, 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 centrifugal pump 103 side of FIG. It can be connected to one or two.
FIG. 13 is a schematic diagram showing the conductive portions 130 a and 130 b formed on the connection surface of the centrifugal pump 103 with the drive motor 104.

The terminals C1 and the like are configured to be electrically connected to the controller 10, and the conductive portions 130a and 130b are artificial lungs that are mechanically and electrically connected to the housing of the centrifugal pump 103 and the centrifugal pump 103. It is possible to connect to the conductive portions 13a and 13b disposed inside the blood feeding tube 12 and the like through an electrical connection path disposed in the housing 2.
That is, the connection between the terminal C1 and the like and the controller 10 is wired in the drive motor 104, while the conductive portions 130a and 130b of the centrifugal pump 103 and the conductive portions 13a and 13b disposed 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, or the like.
Further, the wiring and each conductive portion of the blood feeding tube 12 are connected one-to-one (for example, 130a and 13a and 130b and 13b are connected to each other), and one end of each wiring on the blood feeding tube 12 side is blood feeding. The tube 12 is configured not to be connected across a plurality of conductive portions.

Therefore, in the present embodiment, unlike the first embodiment, no wire such as a cable is arranged outside between the controller-side sensor signal receiving unit 15 and the controller 10.
That is, in this embodiment, since the communication cable between the flow sensor 14 and the controller 10 is not exposed to the outside at all, the person in charge of assembling the extracorporeal circulation device 100 has such a cable. Therefore, 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 electrically connected to the terminal A1 and the like of the controller-side sensor signal receiving part 15 in the first embodiment described above. Since the relationship is the same as that of the unit 13a and the like, terminals that can communicate in the same manner are automatically determined.

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) are respectively “Pattern 1” in FIG. 10 (a), “Pattern 2” in (b), “Pattern 3” in (c) and The “pattern 4” of (d) is shown.
Therefore, the communication between the controller 10 and the flow sensor 14 is performed through the same process as the first embodiment.

(Modification of the first embodiment and the second embodiment)
FIG. 15 is a schematic diagram illustrating a modification of the terminal A1 and the like according to the first embodiment.
As illustrated in FIG. 15, the terminals G1, G2, I1, and I2 may be configured 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. As shown in FIG. 16, conductive portions 230 a and 230 b may be formed on the surface of the blood supply tube 12.

In the present embodiment, the number of terminals is four. However, the present invention is not limited to this, and six terminals, for example, may be provided.
Furthermore, in the present embodiment, the number of the conductive portions is two, but the present invention may be three or more.
In the case where a plurality of conductive portions are arranged, the following relationship is preferable. That is. The angle α between H1 and H2 in FIG. 2 is 60 degrees or more and less than 120 degrees, and when the angle α of one conductive portion and the number of conductive portions are N, the angle α is less than “360 degrees / N”. 360 degrees / 2N "or more is required.
That is, it is required that the conductive portion be arranged so as to be connectable to one or more and less than three terminals.

By the way, the present invention is not limited to the above-described embodiment. You may form the exposed part which an electroconductive part exposes outside in the middle of the longitudinal direction, such as the blood supply tube 12 of the above-mentioned 1st Embodiment. Alternatively, the conductive portion may be formed by applying a conductive plastic material to the surface of the blood supply tube 12 or the like.

DESCRIPTION OF SYMBOLS 1,100 ... Extracorporeal circulation apparatus, 2 ... Artificial lung, 3,103 ... Centrifugal pump, 4,104 ... Drive motor, 5 ... Vein side cannula (bleeding side cannula), 6 ... Arterial cannula (blood feeding cannula), 7 ... Clamp, 8, 9 ... Connector, 10 ... Controller, 11 ... Blood removal tube, 12 ... Blood feeding tube, 12a ... Pipe, 12b ... Wall, 13a, 13b, 130a, 130b, 230a, 230b ... Conducting part, 14 ... Flow sensor, 15 ... Controller-side sensor signal receiver, 15a .... Upper housing, 15b ... Lower housing, 15c ... Tube opening, 15d ... Spring, 15e ... Hinge, 15f ... Hook, 15g ... Hook engaging part, 15h ... Release piece, 21 ... Controller control unit, 22 ... controller side communication device, 23 ... touch panel, 24 ... controller body, 25 ... rectangular wave detection device, 30 ... first various information storage unit, 31 ...・ Terminal and conductive portion arrangement information storage unit, 32... Rectangular wave detection terminal information storage unit, 33... Pattern determination unit (program), 34... Search specific pattern storage unit, 35. Terminal information storage unit, 40... Second various information storage unit, 41... Used terminal determination unit (program), 42... Used terminal etc. information storage unit, 43. (Program), 44 ... Sensor identification information storage unit, 45 ... Transmission data storage unit for sensors, 51 ... Flow rate sensor control unit, 52 ... Sensor side communication device, 53 ... Sensor side terminal Signal detector 54, clock signal input terminal storage unit 55, signal line identification unit (program), 56 reception data storage unit 104a, connection surface, A1, A2, B1, B2 , C1, C2, D1, D2, G1, G2, I1, I2 ... terminals, E1, E2, F1, F2 ... sensor side terminals, 1R ... circulation circuit, P ... patient

Claims (5)

1. An extracorporeal circulation management unit for managing the extracorporeal circulation of blood;
   A tube portion for guiding blood flow in the extracorporeal circulation;
   Having a measuring part for measuring blood in the tube part;
   The extracorporeal circulation apparatus, wherein the tube portion is formed with a plurality of conductive portions for communication between the measurement unit and the extracorporeal circulation management unit.
2. 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 disposed, and the management unit side communication unit includes a plurality of communication units connected to the conductive unit. The communication unit side terminal portion including the terminal,
   When the management unit side communication unit is attached to the tube unit, the specific signal is output from the specific terminal of the communication unit side terminal unit to the tube unit, and the specific signal is received or not received. The extracorporeal circulation apparatus according to claim 1, wherein arrangement information of the plurality of conductive parts with respect to the communication part side terminal part is specified based on position information of other terminals of the communication part side terminal part.
3. The measurement part has a measurement part side terminal part including a plurality of terminals connectable to the conductive part when the measurement part is attached to the tube part,
   When the management unit side communication unit transmits the non-main body signal and the main body signal through different conductive parts, the measurement unit side terminal unit of the measurement unit attached to the tube unit transmits the non-main body signal. Based on the received positional information of the terminal of the measurement unit side terminal unit, the terminal of the measurement unit side terminal unit that receives the main unit signal is specified, and the main unit signal is received. The extracorporeal circulation apparatus according to claim 1 or 2.
4. A pump part for circulating the blood in the tube part;
   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 unit and motor unit are detachable,
   The communication side terminal portion is formed on the side of the motor portion that contacts the pump portion,
   The pump side conductive portion is formed on the side of the pump portion that contacts the motor portion,
   The pump side conductive portion has the same shape as the conductive portion,
   The communication side terminal part and the pump side conductive part are connected to the conductive part of the extracorporeal circulation management part and the tube part, respectively. The extracorporeal circulation apparatus described in 1.
5. The specific signal is a rectangular wave,
   One of the plurality of conductive portions and / or one pump-side conductive portion of the plurality of pump-side conductive portions is one or two terminals of the measurement unit-side terminal unit and the communication unit side The extracorporeal circulation device according to any one of claims 1 to 4, wherein the extracorporeal circulation device is configured to be connectable to a terminal of the terminal portion.

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