JP2020074811A - Blood feeding pump controller, blood feeding pump, blood feeding pump control method - Google Patents

Abstract

To provide a blood feeding pump controller, a blood feeding pump, and a blood feeding pump control method that are capable of detecting a behavior of an operator when he/she operates a blood feeding pump body with a rotary operation signal input device, and controlling a blood feeding pump body while reflecting that behavior.SOLUTION: There is provided a blood feeding pump control device 120 for controlling rotation and driving of a blood feeding pump body 111 in a blood feeding pump used for a blood circulation device. The blood feeding pump control device 120 comprises: a rotation number adjustment unit 130 for outputting a rotation number adjustment signal according to a rotation angle associated with rotation operation; and a control mode setting unit 123. The control mode setting unit 123 detects a behavior of an operator on the basis of a speed of the rotation number adjustment signal input from the rotation number adjustment unit 130, and sets a fine adjustment mode, a coarse adjustment mode, or an emergency speed reduction mode for the blood feeding pump body 111 on the basis of the behavior of the operator.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a blood pump control device, a blood pump, and a blood pump control method for controlling a blood pump used in a blood circulation device.

As is well known, blood circulation devices such as heart-lung machines and assisted circulation are widely used in cardiac surgery and the like as needed.
The blood circulation device stores, for example, the bleeding blood in a reservoir, sends the blood stored in the reservoir to an artificial lung using a blood-sending pump, and then sends the blood from the artificial lung to a human body (patient). It is like this. As the blood supply pump, for example, a roller pump or a centrifugal pump is used (see, for example, Patent Documents 1 and 2).

Since such an artificial heart-lung machine requires a high degree of knowledge and skill to operate, it is common for a clinical technician to manually adjust the blood flow (driving speed) based on the doctor's instructions. is there.
When a clinical engineer performs a manual operation, for example, a rotary operation signal input device such as an encoder is rotationally operated to adjust the drive rotational speed. When the blood supply pump is rotationally driven in a steady state, it is desirable to finely increase (decrease) the driving rotational speed with high accuracy (for example, control resolution of about 0.1 rpm).

  Further, in the blood feeding by the blood feeding pump, it is necessary to perform various blood feeding controls such as blood feeding by fine adjustment, blood feeding by rough adjustment, and emergency stop, for example, depending on the reservoir volume and blood feeding status. ..

JP, 2004-187942, A JP, 2006-325750, A

  However, when controlling the blood pump with a small control resolution, the increase / decrease in the drive rotation speed per input operation signal (change in rotation speed) becomes small, and in order to greatly increase / decrease the drive rotation speed, the rotation amount of the knob Needs to be increased.

  For example, with a control resolution of 0.1 rpm, it is necessary to input 2500 pulse signals in order to increase the driving rotation speed of the blood-sending pump from zero (stopped state) to 250 rpm. At this time, if the operation resolution of the rotary operation signal input device is about 1 °, the knob needs to be rotated about 7 times, and the operation is complicated and time-consuming, and the knob is at the target position (rotation angle). It's not easy to set and stop.

Further, in order to perform blood supply control according to various situations such as fine adjustment, rough adjustment, and emergency stop, a speed reducer for fine adjustment, a switching button for switching between fine adjustment and coarse / fine adjustment, and an emergency stop button However, there is a problem that the structure of the blood supply pump becomes complicated and the cost increases.
Further, as the structure becomes complicated, there is a problem that the blood feeding operation becomes complicated, such as a changeover operation and a change in the operation switch.

  The present invention has been made in consideration of such circumstances, and detects the behavior of an operator when operating the blood pump main body by the rotary operation signal input device, and reflects the behavior to reflect the behavior. An object is to provide a blood pump control device, a blood pump, and a blood pump control method capable of controlling a main body.

Therefore, the inventors of the present invention have earnestly studied the technique of operating the blood pump with only the rotary operation signal input device in accordance with the blood feeding status and the like, and as a result, for example, fine adjustment, coarse adjustment, emergency deceleration ( The behavior of the operator (rotational speed during operation, etc.) changes depending on the psychological state of the operator (including the emergency stop), and the intention of the operator by detecting that behavior. We obtained the knowledge that
In addition, the intention of the operator (for example, the degree of operation steepness) derived from the behavior of the operator is reflected in, for example, the control of a medical device such as a blood pump (for example, the rotational operation amount is amplified and controlled). It was concluded that by doing so, there is a possibility that the blood pump etc. can be controlled appropriately based on the operator's intention.

In order to solve the above problems, the present invention proposes the following means.
According to a first aspect of the present invention, in a blood pump for use in a blood circulation device, the blood pump control device controls the rotational drive of the blood pump main body, wherein the rotation speed is adjusted according to the rotation angle of the rotary operation. A rotary operation signal input device that outputs a signal, and an operation behavior detection unit that detects a behavior of an operator who operates the rotary operation signal input device, wherein the operation behavior detection unit is the rotation speed adjustment signal. A blood feed pump control device, which detects the behavior of an operator based on the speed of the blood pump.

  The invention according to claim 6 is characterized by comprising the blood supply pump control device according to any one of claims 1 to 5 and the blood supply pump main body.

  The invention according to claim 7 is a blood-sending pump control method for controlling rotational driving of a blood-sending pump main body of a blood-sending pump used for a blood circulation device by rotating a rotary operation signal input device, An operator who operates the rotary operation signal input device based on the speed of a rotation speed adjustment signal input from the rotary operation signal input device by a rotary operation when controlling the rotation drive of the blood supply pump main body. Is detected.

According to the blood feeding pump control device, the blood feeding pump, and the blood feeding pump control method according to the present invention, when controlling the rotational drive of the blood feeding pump main body, the rotation speed adjustment signal input from the rotary operation signal input device. The behavior of the operator who operates the rotary operation signal input device is detected based on the speed.
As a result, based on the behavior of the operator when operating the rotary operation signal input device, the operator's intention (fine adjustment, rough adjustment, etc.) can be reflected to control the blood supply pump main body.

In addition, operability can be improved by reducing the rotation range (rotation angle) of the rotary operation signal input device.
In addition, for example, by using a rotary operation signal input device that outputs a pulse signal such as an encoder, the analog volume is rotated in the maximum rotation range of 180 ° to 360 ° by using the analog volume and the A / D circuit. The operability similar to that of the conventional control mechanism can be realized at low cost.

Here, the speed of the rotation speed adjustment signal is a value obtained by dividing the change in the signal input from the rotary operation signal input device by the unit time for calculation for calculating the speed, and the signal is the pulse signal. In addition, various signals such as a change in resistance value can be applied.
Further, the speed of the rotation speed adjustment signal may be defined by a pattern.
Further, the unit time for calculation can be set arbitrarily according to the behavior of the operator to be detected, and may be a different unit time for each behavior to be detected.

  The invention according to claim 2 is the blood pump control device according to claim 1, further comprising a control mode setting unit, wherein the control mode setting unit is the behavior of the operator detected by the operation behavior detection unit. Based on the above, a plurality of control modes with different control contents for the blood supply pump main body are set.

  The invention according to claim 8 is the blood sending pump control method according to claim 7, wherein a plurality of control modes in which the control contents for the blood sending pump main body are different based on the detected behavior of the operator. It is characterized by setting.

According to the blood sending pump control device and the blood sending pump control method of the present invention, a plurality of control modes having different control contents for the blood sending pump main body are set based on the detected behavior of the operator. Therefore, the rotation drive of the blood supply pump main body can be controlled for each control mode.
As a result, the blood supply pump main body can be appropriately rotationally driven according to the control mode.

  A third aspect of the present invention is the blood pump control apparatus according to the second aspect, wherein the control mode setting unit controls the blood pump main body according to a rotation angle displacement amount of the rotation speed adjustment signal. A fine adjustment mode for increasing / decreasing the drive rotation speed and a coarse adjustment mode for increasing / decreasing the drive rotation speed of the blood supply pump main body at a speed higher than the fine adjustment mode are provided, and the rotation speed detected by the operation behavior detection unit. The coarse adjustment mode is set when the speed of the adjustment signal is higher than the coarse adjustment set speed.

  The invention according to claim 9 is the method for controlling a blood sending pump according to claim 7, wherein the driving rotational speed of the blood sending pump main body is increased or decreased in accordance with a rotational angle displacement amount of the rotational speed adjustment signal. When the adjustment mode and the coarse adjustment mode in which the drive rotation speed of the blood supply pump main body is increased or decreased at a speed higher than that of the fine adjustment mode are set, and the speed of the rotation speed adjustment signal is higher than the coarse adjustment set speed. In addition, the blood supply pump main body is rotationally driven in the rough adjustment mode.

  According to the blood pump control device and the blood pump control method of the present invention, when the fine adjustment mode and the coarse adjustment mode are set, and the speed of the rotation speed adjustment signal is higher than the coarse adjustment set speed. Since the blood supply pump main body is driven to rotate in the rough adjustment mode, the blood supply pump main body is appropriately controlled by the rotational speed adjustment signal input from the rotary operation signal input device according to the speed of operation intended by the operator. can do.

  The invention according to claim 4 is the blood supply pump control device according to claim 3, further comprising a coarse adjustment increase / decrease speed setting unit for setting an increase / decrease speed of the drive rotation speed in the coarse adjustment mode. Characterize.

According to the blood pump control device of the present invention, since the coarse adjustment increase / decrease speed setting unit for setting the increase / decrease speed of the drive rotation speed in the coarse adjustment mode is provided, the rough adjustment is performed according to the situation of the surgery or the operator. The increase / decrease speed of the driving rotation speed in the mode can be arbitrarily set.
Here, the setting of the increase / decrease speed of the drive rotation speed in the coarse adjustment mode may be the setting of the increase / decrease speed of the drive rotation speed (resolution rotation speed) itself in the coarse adjustment mode, or the fine adjustment regarding the increase / decrease speed of the drive rotation speed. It may be set according to the magnification of the coarse adjustment mode with respect to the mode, or both may be adjusted and set.

  The invention according to claim 5 is the blood supply pump control device according to claim 2 or 3, wherein the control mode setting unit includes an emergency deceleration mode, and the rotation speed detected by the operation behavior detection unit. The emergency deceleration mode is set when the speed of the adjustment signal is higher than the emergency deceleration setting speed and the displacement of the rotation speed adjustment signal is negative.

  The invention according to claim 10 is the blood supply pump control method according to claim 7 or 8, wherein the speed of the rotation speed adjustment signal is higher than the emergency deceleration setting speed, and When the displacement is negative, the blood supply pump main body is rotationally driven in the emergency deceleration mode.

  According to the blood delivery pump control device and the blood delivery pump control method of the present invention, when the speed of the rotation speed adjustment signal is higher than the emergency deceleration setting speed and the displacement of the rotation speed adjustment signal is negative, the emergency operation is performed. Since the blood supply pump main body is rotationally driven in the deceleration mode, the rotational drive of the blood supply pump main body can be urgently decelerated in an emergency.

  According to the blood sending pump control device, the blood sending pump, and the blood sending pump control method according to the present invention, the behavior of the operator when operating the blood sending pump main body by the rotary operation signal input device is detected, and the behavior is detected. It is possible to control the blood supply pump body by reflecting the above.

It is a circuit diagram explaining the schematic structure of the artificial heart-lung machine using the centrifugal pump which concerns on 1st Embodiment of this invention. FIG. 3 is a block diagram illustrating a schematic configuration of a control unit according to the first embodiment. It is a flow chart explaining an example of drive rotation number control in a control part concerning a 1st embodiment. 6 is a flowchart illustrating an example of a control mode setting procedure in the control unit according to the first embodiment.

<First Embodiment>
Hereinafter, the artificial heart-lung machine (blood circulation apparatus) according to the first embodiment of the present invention will be described with reference to FIG. 1.
FIG. 1 is a circuit diagram illustrating a schematic configuration of a heart-lung machine using a roller pump (blood pump) according to the first embodiment of the present invention, and reference numeral 100 indicates a heart-lung machine (blood circulation device), Reference numeral 110 is a roller pump (blood feeding pump), reference numeral 111 is a roller pump main body (blood feeding pump main body), reference numeral 120 is a control unit (blood feeding pump control device), and reference numeral 130 is a rotation speed adjusting unit (rotary type). The operation signal input device) is shown.

As shown in FIG. 1, the artificial heart-lung machine (blood circulation device) 100 includes, for example, a blood removal line 101, a reservoir 102, a blood line 103, a first blood supply line (blood supply line) 104, and an artificial heart. The lungs 105, a second blood supply line (blood supply line) 106, a roller pump (blood supply pump) 110, and a blood removal regulator (flow rate adjusting means) 210 are provided.
The roller pump (blood pump) 110 includes a roller pump main body (blood pump main body) 111 and a controller (blood pump controller) 120.

The blood removal line 101 is formed of, for example, a resin tube such as polyvinyl chloride, one end of which can be connected to the patient P, and the blood received from the vein is transferred to the reservoir 102.
The blood line 103, the first blood supply line 104, and the second blood supply line 106 are also formed of resin tubes.

The reservoir 102 has a tank therein and temporarily stores the transferred blood.
The blood line 103 is made of a resin tube, has an upstream connected to the reservoir 102 and a downstream connected to the roller pump body 111, and transfers blood received from the reservoir 102 to the roller pump body 111.

  The first blood supply line 104 has an upstream connected to the roller pump main body 111 and a downstream connected to the artificial lung 105, so that the blood sent from the roller pump main body 111 is transferred to the artificial lung 105. There is.

The artificial lung 105 includes, for example, a hollow fiber membrane or a flat membrane having excellent gas permeability, and is configured to discharge carbon dioxide in blood and add oxygen.
The artificial lung 105 is integrally formed with, for example, a heat exchanger for adjusting the temperature of blood.
The second blood supply line 106 transfers the blood received from the artificial lung 105 to the artery of the patient P.

The roller pump main body (blood supply pump main body) 111 includes, for example, a rotating roller, a tube that is disposed outside the rotating roller and is formed of a flexible resin, and a housing that cooperates with the rotating roller to squeeze the tube. The rotating roller is rotated to squeeze the tube to suck and discharge blood into the tube to send blood.
In this embodiment, the roller pump body 111 sucks the blood stored in the reservoir 102 through the blood line 103 and sends it to the artificial lung 105 through the first blood supply line 104.

  Further, the roller pump main body 111 increases or decreases the drive rotation speed of the rotation roller according to the rotation control signal output from the control unit 120, and supplies blood at a flow rate according to the drive rotation speed of the rotation roller.

  In the blood removal regulator 210, for example, the operator operates the operation unit 211 to adjust the clamp amount (clamping amount) of the clamper 212 and change the cross-sectional area of the blood removal line 101 to remove the blood removal line 101. It is configured to adjust the amount of blood removal flowing through. When the operation unit 211 is configured by a rotary operation signal input device such as an encoder and the rotary operation signal input device is rotated at a certain speed or more, the clamper 212 is faster (higher speed) than the normal control mode. ) May be opened and closed (including the case of opening or closing).

  Next, with reference to FIG. 2, a schematic configuration of the control unit (blood pump control device) 120 will be described. FIG. 2 is a block diagram illustrating a schematic configuration of the control unit 120 according to the first embodiment.

As shown in FIG. 2, the control unit (blood supply pump control device) 120 includes, for example, a rotation speed adjustment unit 130 and an operation mode display unit 140, and is connected to the roller pump main body 111.
Further, the control unit 120 includes, for example, a rotation speed adjustment signal reception unit 121, an adjustment signal speed calculation unit 122, a control mode setting unit 123, a roller pump control amount calculation unit 124, and a roller pump control unit 125. I have it.

The rotation speed adjustment unit (rotary operation signal input device) 130 is configured by, for example, an encoder, and rotates the knob to rotate the knob to adjust the rotation speed according to a change in the rotation angle (operation angle) of the knob. Signal) to increase / decrease the driving rotation speed of the roller pump body 111.
Further, the rotation speed adjustment signal is configured to count the rotation angle (operation angle) with reference to the circumferential position when the knob of the rotation speed adjustment unit 130 starts rotating.

The rotation speed adjustment signal reception unit 121 is connected to the rotation speed adjustment unit 130 so as to receive the rotation speed adjustment signal output from the rotation speed adjustment unit 130 (for example, a pulse signal of a number corresponding to a rotation operation angle). Is becoming
Then, the rotation speed adjustment signal reception unit 121 sends the rotation speed adjustment signal to the adjustment signal speed calculation unit 122 and the control mode setting unit 123.

The adjustment signal speed calculation unit 122 divides the rotation speed adjustment signal received via the rotation speed adjustment signal reception unit 121 by a unit time for speed calculation to obtain rotation speed adjustment speed data (speed of rotation speed adjustment signal (speed calculation The rotation speed adjustment signal per unit time))) is calculated.
In this embodiment, for example, the coarse adjustment setting speed K1 is 10 pulse signals / 3 seconds, and the emergency deceleration setting speed K2 is 10 pulse signals / 0.3 seconds, for speed calculation for calculating the rotation speed adjustment speed data. The time is set differently depending on the objects to be compared (coarse adjustment setting speed K1, emergency deceleration setting speed K2). Here, the comparison of the speed of the rotation speed adjustment signal, the rough adjustment setting speed K1, and the emergency deceleration setting speed K2 in this embodiment is performed with an absolute value.

The unit time for speed calculation, which is compared with the coarse adjustment set speed K1, is preferably set to 0.04 to 0.30 seconds for appropriately detecting the speed change of the rotation speed adjustment signal. ..
The unit time for speed calculation, which is compared with the emergency deceleration setting speed K2, is preferably set to 0.03 seconds or less for appropriately detecting the speed change of the rotation speed adjustment signal.

  The control mode setting unit (operation behavior detection unit, control mode setting unit) 123 is configured to set the control mode based on the rotation speed adjustment speed data sent from the adjustment signal speed calculation unit 122. Specifically, the control mode setting unit 123 refers to, for example, a table (for example, [rotation speed adjustment speed]-[control mode]) to determine a preset control mode (for example, from the rotation speed adjustment speed data). , Fine adjustment mode, coarse adjustment mode, and emergency deceleration mode) are set to detect the behavior of the operator and set the control mode reflecting the behavior of the operator.

Specifically, in this embodiment, the control mode setting unit 123 reflects the intention of the operator (for example, the degree of slowness of the operation) derived from the behavior of the operator in the control of the blood supply pump main body 111, for example. By controlling (for example, amplifying and controlling the rotation operation amount), the roller pump main body 111 is controlled based on the intention of the operator. In other words, the behavior of the operator based on the rotation speed adjustment speed. It is configured to also include an “operation behavior detection unit” that detects
The behavior of the operator in this embodiment is, for example, a fine adjustment operation when the target drive rotation speeds are close to each other, a rough adjustment operation when the target drive rotation speeds are greatly separated, or an emergency deceleration. The configuration corresponds to the emergency deceleration operation in.

  In the fine adjustment mode, for example, when the rotation speed adjustment speed data is less than the coarse adjustment set speed K1, one pulse of the rotation speed adjustment signal is used as the resolution rotation speed of the roller pump main body 111 (minimum controllable rotation speed (rpm)). ), The driving speed is increased or decreased.

  In the coarse adjustment mode, for example, when the rotation speed adjustment speed data is the coarse adjustment setting speed K1 and is less than the emergency deceleration setting speed K2, the drive rotation speed of the roller pump main body 111 is increased / decreased faster than in the fine adjustment mode. It is configured to do.

  In the emergency deceleration mode, for example, when the speed of the rotation speed adjustment signal is higher than the emergency deceleration setting speed K2 and the displacement of the rotation speed adjustment signal is negative, the drive rotation speed of the roller pump main body 111 is roughly adjusted. It is configured to decelerate at a higher speed than. In this embodiment, the emergency deceleration setting speed K2> coarse adjustment setting speed K1.

The roller pump control amount calculation unit 124, for example, based on the rotation speed adjustment signal (pulse signal of the number) received from the rotation speed adjustment signal reception unit 121 and the control mode set by the control mode setting unit 123, The control amount (driving speed) output to the control unit 125 is calculated.
Specifically, in the fine adjustment mode, the roller pump control amount calculation unit 124 multiplies the count number of the rotation speed adjustment signal (for example, a pulse signal) and the resolution rotation speed to increase or decrease the drive rotation speed. To do.

The value of the increase / decrease speed (resolution rotation speed, (rpm / pulse)) of the drive rotation speed in the fine adjustment mode can be set arbitrarily. In this embodiment, for example, the fine adjustment drive rotation per pulse signal Number = 0.1 (rpm / pulse) is set.
Further, the increase / decrease speed of the drive rotation speed in the fine adjustment mode may be set appropriately, for example, by providing a fine adjustment mode resolution rotation speed setting switch (not shown).

In the coarse adjustment mode, for example, the count number of the rotation speed adjustment signal (for example, pulse signal) and the resolution rotation speed of the roller pump main body 111 in the fine adjustment mode are amplified by a set magnification N (for example, 10 to 80). The rough rotation drive speed (rpm / pulse) per pulse signal is multiplied by to increase or decrease the drive speed.
The increase / decrease speed (resolution rotation speed) of the drive rotation speed in the coarse adjustment mode can be set to an arbitrary value. In this embodiment, for example, the setting magnification N = 10, the coarse adjustment drive rotation per pulse signal. The number is set to 1.0 (rpm / pulse).

  The increase / decrease speed of the drive rotation speed in the coarse adjustment mode may be set appropriately by providing a coarse adjustment increase / decrease speed setting unit (not shown). In this case, for example, the increase / decrease speed of the drive rotation speed (resolution rotation speed) in the coarse adjustment mode itself may be set, or may be set by the setting magnification of the coarse adjustment mode with respect to the fine adjustment mode, or both of them may be set. It may have a configurable configuration.

  Further, in the emergency deceleration mode, for example, the drive rotation speed is reduced faster than the maximum value of the deceleration speed in the rough adjustment mode based on the rotation speed adjustment speed data. Specifically, for example, the driving rotation speed is reduced by the number calculated from the rotation speed adjustment signal (for example, pulse signal) and the rapid deceleration driving rotation speed (rpm / pulse).

The deceleration speed in the emergency deceleration mode can be set arbitrarily, deceleration may be slower than in the rough adjustment mode, or the rotary drive may be turned off. In this embodiment, for example, the rapid deceleration drive rotation speed per pulse signal is set to 5.0 (rpm / pulse).
Further, for example, deceleration in the emergency deceleration mode is performed up to a preset rapid deceleration mode set rotation speed (for example, zero may be set). It should be noted that whether or not the rapid deceleration mode setting rotation speed is set can be arbitrarily set.

Note that, for example, an emergency deceleration mode condition setting unit (not shown) may be provided so that the operation in the emergency deceleration mode (deceleration speed, set speed for rapid deceleration mode, etc.) can be set appropriately.
In this case, the deceleration speed itself in the emergency deceleration mode may be set, a magnification for the fine adjustment mode or the coarse adjustment mode may be set, or a combination thereof may be set. Further, the deceleration speed may be set regardless of the rotation speed adjustment signal.
Further, the rapid deceleration mode setting rotation speed (including the case of zero) may be set to a fixed value and not set by the emergency deceleration mode condition setting unit.

  The roller pump control unit 125 outputs a signal corresponding to the control amount received from the roller pump control amount calculation unit 124, and adjusts the drive rotation speed of the roller pump main body 111.

The operation mode display unit 140 is composed of, for example, a liquid crystal panel, and is connected to the control mode setting unit 123 and the roller pump control amount calculation unit 124.
Further, the operation mode display unit 140 displays the control mode (fine adjustment, coarse adjustment, emergency deceleration) according to the control mode setting signal received from the control mode setting unit 12. Further, the drive rotation speed of the roller pump main body 111 is displayed based on the control amount received from the roller pump control amount calculation unit 124.

<Drive speed adjustment control>
Next, with reference to FIG. 3 and FIG. 4, drive rotation speed control in the control unit 120 according to the first embodiment will be described. FIG. 3 is a flowchart illustrating an example of drive rotation speed control in the control unit according to the first embodiment, and FIG. 4 is a control mode (fine adjustment mode, coarse adjustment mode, emergency deceleration mode) in the control mode setting unit 123. 7 is a flowchart illustrating an example of a setting procedure of (1).

(1) First, as shown in FIG. 3, a rotation speed adjustment signal is received (S101).
(2) Next, the adjustment signal speed is calculated based on the rotation speed adjustment signal (S102).

(3) Next, the control mode is set based on the calculated adjustment signal speed (S103).
[Setting of control mode]
The setting of the control mode in S103 can be performed by the following procedure, for example.
(3-1) First, the control mode setting unit 123 receives the adjustment signal speed sent from the adjustment signal speed calculation unit 122, as shown in FIG. Then, it is determined whether or not the adjustment signal speed <the coarse adjustment setting speed K1 (S201).
If the adjustment signal speed <coarse adjustment setting speed K1 (S201: Yes), the process proceeds to S202, and if the adjustment signal speed <coarse adjustment setting speed K1 is not satisfied (S201: No), the process proceeds to S203.
(3-2) The control mode setting unit 123 sets the control mode to the fine adjustment mode (control mode 1) (S202).
(3-3) Next, the control mode setting unit 123 determines whether or not the adjustment signal speed <the emergency deceleration setting speed K2 (S203).
When the adjustment signal speed is less than the emergency deceleration setting speed K2 (S203: No), the process proceeds to S204, and when the adjustment signal speed is not less than the emergency deceleration setting speed K2 (S203: Yes), the process proceeds to S205.
(3-4) The control mode setting unit 123 sets the control mode to the coarse adjustment mode (control mode 2; increase / decrease in rotation speed) (S204).
(3-5) Next, the control mode setting unit 123 determines whether the rotation speed adjustment signal is negative (<0) (S205).
When the rotation speed adjustment signal is not negative (<0) (S205: No), the process proceeds to S204, and when the rotation speed adjustment signal is negative (<0) (S205: Yes), the process proceeds to S206.
(3-6) The control mode setting unit 123 sets the control mode to the emergency deceleration mode (control mode 3) (S206).
The control mode setting unit 123 repeats the processing of S201 to S206 at a predetermined cycle.

(4) Next, the blood pump control amount is calculated based on the rotation speed adjustment signal and the control mode (S104).
For example, the processes of S101 to S104 are repeatedly executed at a predetermined cycle while the roller pump main body 111 is driven and rotated.

Next, an example of a specific configuration and operation of the roller pump 110 will be described.
The coarse adjustment setting speed K1 is, for example, 10 pulse signals / 3 seconds (for example, a rotation angle of 10 ° per 3 seconds). The emergency deceleration setting speed K2 is, for example, 10 pulse signals / 0.3 seconds (for example, a rotation angle of 10 ° in the minus direction per 0.3 seconds).

  When the rotational operation speed of the rotary operation signal input device is smaller than the coarse adjustment setting speed K1 (= 10 pulse signals / 3 seconds), the fine adjustment mode is set and 10 pulses (for example, a rotation angle of 10 °) are set. The increase / decrease (change amount) of the driving rotation speed per hit is 1.0 rpm, that is, the increase / decrease (change amount) of the drive rotation speed per pulse is 0.1 (rpm / pulse).

Further, when the rotational operation speed of the rotary operation signal input device ≧ the coarse adjustment setting speed K1, the coarse adjustment mode is set, and the increase / decrease (change amount) of the drive rotation speed per pulse is 1.0 (rpm). / Pulse).
Further, when the rotary operation of the rotary operation signal input device is deceleration and the rotation operation speed of the rotary operation signal input device> emergency deceleration setting speed K2 (= 10 pulse signal / 0.3 seconds), the emergency deceleration is performed. By setting the mode, the drive rotation speed reduction (change amount, resolution rotation speed) per pulse is 5.0 (rpm / pulse).

  According to the roller pump 110 and the blood supply pump control device 120 according to the first embodiment, when controlling the rotation drive of the roller pump main body 111, an input is made from the rotation speed adjustment unit (rotary operation signal input device) 130. Since the behavior of the operator is detected based on the speed of the rotation speed adjustment signal and the intention of the operator is reflected to control the roller pump main body 111, the roller pump main body 111 can be appropriately controlled.

  Further, according to the roller pump 110 and the blood supply pump control device 120 according to the first embodiment, the control unit 120 sets a plurality of control modes (fine adjustment, coarse adjustment, emergency deceleration) for the roller pump main body 111. Therefore, the rotation drive of the roller pump main body 111 can be appropriately controlled according to each control mode.

  According to the roller pump 110 and the blood supply pump control device 120 according to the first embodiment, the fine adjustment mode and the coarse adjustment mode are set, and the speed of the rotation speed adjustment signal is equal to or higher than the coarse adjustment set speed K1. In addition, since the roller pump main body 111 is rotationally driven in the rough adjustment mode, the rotational drive of the roller pump main body 111 can be changed at high speed when the operator is urgently performing rotational operation.

  According to the roller pump 110 and the blood supply pump control device 120 according to the first embodiment, when the speed of the rotation speed adjustment signal is higher than the emergency deceleration setting speed K2 and the displacement of the rotation speed adjustment signal is negative. In the emergency deceleration mode, the roller pump main body 111 can be urgently decelerated (for example, the arrival speed may be zero (stopped), and may be met).

It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the invention.
For example, in the above embodiment, the case where the blood supply pump is the roller pump 110 has been described, but the roller pump 110 may be replaced with a centrifugal pump.

  Further, in the above-described embodiment, the blood sending pump control device has been described as a case of adjusting the number of revolutions of the blood sending pump main body, but for example, the blood sending pump main body is manually adjusted, the blood sending blood flow is automatically adjusted. Adjustment, automatic rotation speed adjustment, blood flow synchronization adjustment function, etc. may be provided together.

  Further, in the above embodiment, the case where the blood sending pump control unit (the blood sending pump control device) sets the control mode to control the drive rotation speed of the blood sending pump main body has been described, but without setting the control mode. The rotation drive of the blood supply pump main body may be controlled, for example, the drive rotation speed is calculated by a mathematical formula based on the rotation speed adjustment signal input from the rotation control unit 130, and the roller pump main body is calculated based on this drive rotation speed. It is also possible to adopt a configuration in which the drive rotation speed of is changed steplessly.

  Further, in the above embodiment, the case where the fine adjustment mode, the coarse adjustment mode, and the emergency deceleration mode are set as the control mode has been described, but two selected from the fine adjustment mode, the rough adjustment mode, and the emergency deceleration mode are set. Alternatively, a control mode other than the above three control modes (for example, a control mode in which any one of the fine adjustment mode, the rough adjustment mode, and the emergency deceleration mode is divided into a plurality of control modes) may be set.

  In the above embodiment, the case where the coarse adjustment mode is set based on one coarse adjustment set speed K1 has been described. However, for example, the coarse adjustment set speed and the drive rotation speed when the drive rotation speed is increased. The coarse adjustment setting speed in the case of decreasing can be set to different numerical values.

  Further, in the above embodiment, in the emergency deceleration mode, the case where the blood supply pump body is decelerated to the set drive rotation speed at a higher speed than in the rough adjustment mode has been described, but the drive rotation control in the emergency deceleration mode is arbitrarily set. It is possible to For example, it may be an emergency stop (rotational drive OFF), or may be configured to decelerate to a set drive rotation speed (may be zero) at a lower speed than rough adjustment.

  In the above embodiment, the case where the control mode setting unit 123 includes the operation behavior detection unit, that is, the function is also described, but the control mode setting unit 123 and the operation behavior detection unit may be separately provided.

  Further, in the above embodiment, an example of a block diagram showing a schematic configuration of the control unit 120 is shown in FIG. 2, but a configuration other than the block diagram shown in FIG. 2 may be used.

  Further, in the above embodiment, an example of a schematic configuration of a flowchart for controlling the roller pump main body 111 is shown in FIGS. 3 and 4, but a method (algorithm) other than the flowcharts shown in FIGS. 3 and 4 is used. The blood pump body may be controlled.

  Further, in the above embodiment, the case where the blood circulation system is the heart-lung machine 100 has been described, but it is applied to a blood circulation system other than the heart-lung machine, such as an auxiliary circulation device without a reservoir in cardiac surgery. You may.

  Further, in the above-described embodiment, the case where the medical device controlled by using the rotary operation signal input device is the blood supply pump has been described, but the behavior of the operator is detected without being limited to the blood supply pump. Thus, it can be applied to various medical devices that can be controlled by reflecting the behavior of the operator. For example, by applying the above invention to a blood removal regulator or a blood supply regulator, when the operating unit (rotary operation signal input device) is rotated at a certain speed or more, the clamper operates faster than in the normal control mode. It may be configured to open and close (high speed). Further, it can also be applied to the case of adjusting the flow rate, the pressure, etc. by a rotary operation signal input device in an anesthesia device, a patient monitoring monitor device and the like.

  INDUSTRIAL APPLICABILITY According to the blood pump control device, the blood pump, and the blood pump control method according to the present invention, the behavior of the operator when operating the blood pump main body can be detected and therefore industrially applicable.

100 Cardiopulmonary bypass device (blood circulation device)
110 Roller pump (blood pump)
111 Roller pump body (blood pump body)
120 Control Unit (Blood Pump Control Device)
121 rotation speed adjustment signal reception unit 122 adjustment signal speed calculation unit 123 control mode setting unit (operation behavior detection unit, control mode setting unit)
124 Blood Pump Control Amount Calculation Unit (Blood Pump Control Amount Calculation Unit)
125 Blood Pump Control Section (Blood Pump Control Section)
130 Rotation speed adjustment unit (rotary operation signal input device)
140 Operation mode display

Claims (10)

In a blood supply pump used for a blood circulation device, a blood supply pump control device for controlling rotational drive of a blood supply pump body,
A rotary operation signal input device that outputs a rotation speed adjustment signal according to the rotation angle by the rotation operation,
An operation behavior detection unit that detects a behavior of an operator who operates the rotary operation signal input device,
Equipped with
The operation behavior detection unit,
A blood delivery pump control device, which detects the behavior of an operator based on the speed of the rotation speed adjustment signal. The blood supply pump control device according to claim 1, wherein
Equipped with a control mode setting unit,
The control mode setting unit,
A blood delivery pump control device, wherein a plurality of control modes having different control contents for the blood delivery pump main body are set based on the behavior of the operator detected by the operation behavior detection unit. The blood supply pump control device according to claim 2, wherein
The control mode setting unit,
A fine adjustment mode in which the drive rotation speed of the blood supply pump main body is increased / decreased according to the rotation angle displacement amount of the rotation speed adjustment signal, and a drive rotation speed of the blood supply pump main body is increased / decreased at a higher speed than in the fine adjustment mode. Coarse adjustment mode,
Equipped with
The blood feed pump control device, wherein the rough adjustment mode is set when the speed of the rotation speed adjustment signal detected by the operation behavior detection unit is higher than the rough adjustment set speed. The blood pump control device according to claim 3, wherein
A blood-sending pump control device comprising: a coarse adjustment increase / decrease speed setting unit for setting an increase / decrease speed of the drive rotation speed in the coarse adjustment mode. The blood pump control device according to claim 2 or 3, wherein
The control mode setting unit,
Equipped with an emergency deceleration mode,
The emergency deceleration mode is set when the speed of the rotation speed adjustment signal detected by the operation behavior detection unit is higher than the emergency deceleration setting speed and the displacement of the rotation speed adjustment signal is negative. And blood pump control device.   A blood-sending pump, comprising: the blood-sending pump control device according to claim 1; and the blood-sending pump main body. A blood-sending pump control method for controlling rotational drive of a blood-sending pump main body of a blood-sending pump used in a blood circulation device by rotating a rotary operation signal input device,
An operator who operates the rotary operation signal input device based on the speed of a rotation speed adjustment signal input from the rotary operation signal input device by a rotary operation when controlling the rotation drive of the blood supply pump main body. A method for controlling a blood pump, which comprises detecting the behavior of a blood pump. The blood supply pump control method according to claim 7, wherein
A blood sending pump control method, wherein a plurality of control modes having different control contents for the blood sending pump main body are set based on the detected behavior of the operator. The blood supply pump control method according to claim 8, wherein
A fine adjustment mode in which the drive rotation speed of the blood supply pump main body is increased / decreased according to the rotation angle displacement amount of the rotation speed adjustment signal, and a drive rotation speed of the blood supply pump main body is increased / decreased at a higher speed than in the fine adjustment mode. Coarse adjustment mode,
Set
A blood sending pump control method, wherein the blood sending pump main body is rotationally driven in the rough adjusting mode when the speed of the rotation speed adjusting signal is higher than the rough adjusting set speed. The blood supply pump control method according to claim 8 or 9,
When the speed of the rotation speed adjustment signal is higher than the emergency deceleration setting speed and the displacement of the rotation speed adjustment signal is negative, the blood supply pump main body is rotationally driven in the emergency deceleration mode. Blood pump control method.

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