JP6792564B2 - Medical pump system, how to operate the medical pump system and control program of the medical pump system - Google Patents

Description

The present invention is, for example, it relates to medical Ryoyo pump system, operating method and a control program of the medical pump system of the medical pump system for feeding the liquid medicine or the like into the patient and the like.

Conventionally, for example, when a drug solution is administered to a patient, a medical pump such as an infusion pump or a syringe pump has been used in order to accurately control the dose, administration rate, and the like.
In such a medical pump, a drug solution containing a drug or the like is administered to a patient via a tube.
However, the tube may be occluded by bending or twisting during administration of the drug solution.
If the medical pump continues to send the drug solution during this blockage, the pressure inside the tube increases, so that the drug solution may be suddenly sent to the patient when the blockage is released.
Therefore, for example, in a syringe pump, when the blockage sensor detects a blockage, the pump does not continue to send liquid, and the motor is reversely operated to alleviate the increase in pressure (for example, Patent Document 1). etc).

Japanese Unexamined Patent Publication No. 2002-11309

By the way, a drug solution may be administered to a patient by using a plurality of medical pumps. In this case, the tubes containing the drug solutions sent by each medical pump are not separately sent to the patient via a needle, catheter, etc., but finally into one tube via the mixed injection portion. In many cases, each drug solution is sent.
Further, since each of the plurality of medical pumps has a separate occlusion sensor, the accuracy of pressure detection and the setting of occlusion determination differ depending on each occlusion sensor.

When such a medical pump administers a drug solution to a patient or the like through a single tube via a mixed injection portion, if the tube is blocked, the timing of determining the blockage differs depending on the medical pump. There is a risk. That is, a certain medical pump detects the blockage and reversely operates (operates) the motor, but another medical pump continues to execute the liquid feeding operation.
In this case, the following problems may occur in the "mixed injection part" to which each tube of each medical pump is connected.
That is, that subsequently drug solution or the like of the medical pump running feeding, via the "mixing dispensing section", "suction phenomenon" drawn into the medical pump side running reverse rotation occurs There's a problem.

Accordingly, the present invention is one medical "suction phenomenon" the chemical solution is aspirated from the pump side to the other of the medical pump side accurately Medicine Ryoyo pump system is Ru possible to prevent the occurrence of medical pump system It is an object of the present invention to provide a method of operating the pump system and a control program of a medical pump system .

In the above object, in the present invention, a plurality of medical pumps for sending a liquid contained in a tube portion and the tube portion arranged in each of the plurality of medical pumps are connected to the subject. A medical pump system including a mixed injection section connected to a subject side tube section connected to the medical pump , wherein the medical pump has at least a liquid feeding mode for moving a liquid in the tube section in a liquid feeding direction. A liquid moving unit that can be switched to the counter-feeding mode for moving in the counter-feeding direction , a pipe- in-pipe state information detecting unit that detects pipe-in-pipe pressure value information that is the pressure value in the pipe, and a pipe-in- pipe pressure. A blockage determination unit that generates blockage information of the pipe portion based on the value information is provided, and the liquid moving unit is operated in the liquid feed mode, and then, based on the blockage information, in the counter-feeding mode. has a configuration to change operation, it has a reaction liquid delivery mode stop information generating unit that generates a reaction liquid delivery mode stop information that is in the stop information of the anti-liquid feed mode based on said pipe section pressure value information If the blockage information does not reach the blockage mitigation reference information during the counter-pump mode operation, the reversal operation integrated liquid feed information of the counter-pump mode is the planned amount of liquid to be administered to the subject. It is determined whether or not the planned liquid feed amount information has been reached, and if the scheduled liquid feed amount information has not been reached, the reverse operation integrated liquid feed amount information stays in the pipe portion assumed by the blockage information. This is achieved by a medical pump system characterized in that the counter-feed mode stop information is generated when the expected stagnant liquid amount information is reached .

According to the above configuration, the liquid moving unit is operated in the liquid feeding mode and then changed to the operation in the counter-liquid feeding mode (for example, reverse operation (operation)) based on the blockage information of the blockage determination unit. The counter-feeding mode stop information generation unit (for example, "estimated chemical amount determination processing unit"", which generates the counter-feeding mode stop information, which is the stop information of the counter-feeding mode" based on the state information in the pipe section. It has a blockage detection value drop judgment processing unit, etc.).
In this way, since the counter-feeding mode stop information is generated based on the state information in the pipe section, the counter-feeding mode can be stopped at an appropriate timing, and the tube of the infusion pump can be replaced with the tube of another infusion pump. Even if the other infusion pumps are connected by the "mixed injection part" and are running in the infusion mode, the "suction phenomenon" in which liquids such as chemicals are sucked from the other infusion pumps to the infusion pump side is accurately generated. It can be prevented in advance.
In addition, when the blocked state is resolved, it is possible to prevent the drug solution or the like from being suddenly sent from the tube to the patient.

According to the above configuration, the counter-feeding mode stop information generation unit generates counter-feeding mode stop information based on the expected liquid amount information (for example, the assumed chemical amount, etc.), and therefore stays in the pipe portion in a closed state. The counter-feeding mode is executed only for the information on the expected amount of retained liquid.
Therefore, it is possible to more accurately prevent the occurrence of the "suction phenomenon" in which a liquid such as a chemical solution is sucked from another infusion pump to the infusion pump side.
In addition, when the blocked state is resolved, it is possible to prevent the drug solution or the like from being suddenly sent from the tube to the patient.

Preferably, in the medical pump system, the counter-feeding mode stop information generation unit is based on the pressure value change transition information which is the change transition information of the pressure value information in the pipe portion during the execution of the counter-feeding mode. The counter-pump mode stop information is generated, and the pressure value change transition information is characterized by whether or not the pressure value has a downward trend .
Further, preferably, the medical pump system is based on the pressure value change transition information which is the change transition information of the pressure value information in the pipe portion during the execution of the counter-feeding mode, and the counter-feeding mode stop information generation unit. However, the counter-pump mode stop information is generated, and the pressure value change transition information is characterized in that whether or not the descent speed within a predetermined time is within a predetermined range.

According to the above configuration, the counter-feeding mode stop information generation unit performs pressure value change transition information (for example, “blockage detection value tends to decrease”, which is change transition information of pressure value information in the pipe section during execution of the counter-feeding mode. Based on "whether or not", "whether or not it is below a predetermined descent speed", etc.), the counter-feeding mode stop information is generated.
Therefore, even though the counter-feeding mode is being executed, when the pressure value does not drop or the falling speed is not within a predetermined range in the pressure value change transition information, the counter-feeding mode stop information generator However, the counter-feeding mode stop information is generated.
Therefore, it is possible to prevent the occurrence of the "suction phenomenon" in which a liquid such as a chemical solution is sucked from another infusion pump to the infusion pump side more quickly.
In addition, when the blocked state is resolved, it is possible to prevent the drug solution or the like from being suddenly sent from the tube to the patient.

In the above object, in the present invention , at least, a liquid feeding mode in which a plurality of medical pumps move the liquid contained in the pipe portion in the liquid feeding direction and a liquid feeding mode in which the liquid contained in the pipe portion is moved in the counter-feeding direction. A target person who is connected to the target person by connecting the liquid moving part which can be switched to, the pipe part state information detecting part which detects the pressure value information in the pipe part which is the pressure value in the pipe part, and the pipe part, respectively. It is an operation method of a medical pump system having a mixed injection part connected to a side pipe part, and generates blockage information of the pipe part based on the pressure value information in the pipe part, and the liquid moving part is the feeding part. After operating in the liquid mode, the operation is changed to the counter-feeding mode based on the blockage information, and the counter-feeding mode stop information which is the stop information of the counter-feeding mode based on the pressure value information in the pipe section. When the blockage information does not reach the blockage mitigation reference information during the operation of the counter-feeding mode, the reverse operation integrated liquid feeding information of the counter-feeding mode is the scheduled liquid to be administered to the subject. It is determined whether or not the planned liquid feed amount information, which is the amount, has been reached, and if the planned liquid feed amount information has not been reached, the reverse operation integrated liquid feed amount information is the tube assumed by the blockage information. This is achieved by a method of operating a medical pump system , which comprises generating the counter-feeding mode stop information when the expected amount of retained liquid information retained in the unit is reached .

In the above object, in the present invention , at least, a liquid feeding mode in which a plurality of medical pumps move the liquid contained in the tube portion in the liquid feeding direction and a liquid feeding mode in which the liquid contained in the pipe portion is moved in the counter-feeding direction. The liquid moving unit that can be switched to the liquid moving unit, the state information detecting unit in the pipe that detects the pressure value information in the pipe, which is the pressure value in the pipe, and the pipe unit are connected to each other, and the subject is connected to the target person. a mixed injection unit connecting the side tube portions, Oite the medical pump system having, on the basis of the pipe section pressure value information, and generating an occlusion information of the tube portion, the liquid transfer unit, the liquid feed After operating in the mode, the step of changing to the operation of the counter-pump mode based on the blockage information and the counter-pump mode stop which is the stop information of the counter-pump mode based on the state information in the pipe portion. When the blockage information does not reach the blockage mitigation reference information during the step of generating information and the operation of the counter-pump mode, the reverse operation integrated liquid feed information of the counter-pump mode is the liquid to be administered to the subject. The step of determining whether or not the planned liquid feed amount information, which is the planned liquid amount of, and the reverse operation integrated liquid feed amount information when the planned liquid feed amount information has not been reached are the blockage information. Medical treatment including a step of generating the counter-pump mode stop information when the expected amount of stagnant liquid amount information staying in the expected pipe portion is reached, and executing these steps. Achieved by the control program of the pump system .

As described above, according to the present invention, one medical precisely medical Ryoyo pump is Ru possible to prevent the occurrence of "suction phenomenon" the chemical solution is aspirated from the pump side to the other of the medical pump side system, it is possible to provide a working method and a control program of the medical pump system of the medical pump system.

FIG. 5 is a schematic view of, for example, an infusion pump system which is a medical pump system according to an embodiment of the present invention, for example, a medical pump system using a plurality of infusion pumps. It is a schematic perspective view which shows the main structure of the infusion pump of FIG. It is the schematic explanatory drawing which shows the main structure of the liquid feed drive part of the infusion pump shown in FIG. 1 and FIG. It is a schematic block diagram which shows the main structure of the infusion pump shown in FIG. It is a schematic block diagram which shows the main structure of the 1st various information storage part. It is a schematic block diagram which shows the main structure of the 2nd various information storage part. It is a schematic block diagram which shows the main structure of the 3rd various information storage part. It is a schematic flowchart which shows the main operation example of the infusion pump system which concerns on this embodiment. It is another schematic flowchart which shows the main operation example of the infusion pump system which concerns on this embodiment. It is another schematic flowchart which shows the main operation example of the infusion pump system which concerns on this embodiment. It is a schematic block diagram which shows the main structure of the infusion pump which concerns on this modification. It is a schematic flowchart which shows the main operation example in the infusion pump system which concerns on this modification.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and the like.
Since the embodiments described below are suitable specific examples of the present invention, various technically preferable limitations are attached, but the scope of the present invention particularly limits the present invention in the following description. Unless otherwise stated, the present invention is not limited to these aspects.

FIG. 1 is a schematic view of, for example, an infusion pump system 1 which is a medical pump system using a plurality of infusion pumps 10, 100, which are medical pumps according to an embodiment of the present invention.
In the present embodiment, for example, the pump side tubes 11a and 11b are arranged inside as a medical pump, and the pump side tubes 11a and 11b are pressed to press the pump side tubes 11a and 11b in the pump side tubes 11a and 11b. For example, two infusion pumps 10 and 100 for sending the drug solution will be described below, but a syringe pump having a syringe inside and pushing out the drug solution with this syringe is used. It doesn't matter.

As shown in FIG. 1, the system 1 has two infusion pumps 10 and 100, and a chemical solution bag containing the chemical solution to supply the chemical solution to the respective infusion pumps 10 and 100. 12a and 12b are arranged.
The drug bags 12a and 12b are configured to supply the drug solution via the pump-side tubes 11a and 11b, respectively. As shown in FIG. 1, some of the pump-side tubes 11a and 11b are infused. It is configured to be arranged in the pumps 10 and 100.

Further, the two pump-side tubes 11a and 11b are connected to the mixed injection section 13, respectively, as shown in FIG.
The mixed injection portion 13 is connected to, for example, a patient-side tube 14 which is a subject-side tube portion, and the patient-side tube 14 is connected to a blood vessel such as the arm of the patient P via an indwelling needle 15 or the like. ..
Therefore, the chemical solutions in the two pump-side tubes 11a and 11b of FIG. 1 are combined at the mixed injection portion 13 and administered to the patient via the patient-side tube 14 and the indwelling needle 15.

FIG. 2 is a schematic perspective view showing a main configuration of the infusion pump 10 of FIG. Since the infusion pump 100 has the same configuration as the infusion pump 10, description thereof will be omitted.
As shown in FIG. 1, as shown in FIG. 2, the infusion pump 10 has a display 21 which is a display unit for displaying various information, and also includes various operation buttons 22.
For example, a pilot lamp 22a that includes an LED inside and emits light and displays via a light diffusing agent to indicate the operating state of the infusion pump 10, and fast forward for injecting a drug solution at an injection speed faster than the set flow rate (mL / h). A switch button 22b, a start switch button 22c, a stop switch button 22d, a menu selection button 22e, and the like are arranged.

As shown in FIGS. 1 and 2, the infusion pump 10 is a liquid moving unit for pressing a pump-side tube 11a arranged inside the pump side tube 11a to feed a chemical solution inside the pump, for example, a liquid feeding drive. The unit 30 is arranged.
Further, on the upstream side (drug bag 12a side) of the liquid feeding drive unit 30, for example, a pipe section state information detecting unit that detects blockage in the pump side tube 11a on the upstream side of the liquid feeding driving unit 30. The upstream blockage sensor 16 is arranged. On the other hand, on the downstream side (mixed injection unit 13 side) of the liquid feed drive unit 30, a downstream blockage sensor, which is a pipe section state information detection unit that detects blockage in the pump side tube 11a on the downstream side of the liquid feed drive unit 30. 17 is arranged.
The upstream blockage sensor 16 and the downstream blockage sensor 17 are, for example, pressure sensors, and are configured to detect the pressure inside the pump-side tube 11a.

FIG. 3 is a schematic explanatory view showing a main configuration of a liquid feed driving unit 30 of the infusion pump 10 shown in FIGS. 1 and 2.
As shown in FIG. 3, the liquid feed driving unit 30 has a cam structure 32 and a finger structure 33, and these structures have a structure for controlling the liquid feeding of the chemical liquid in the pump side tube 11a. ..
That is, the operation of the cam structure 32 accurately controls the feeding of the chemical solution in the pump-side tube 11a.

Specifically, it has a plurality of cams, for example, 6 cams 32a to 32f, and the finger structure 33 has 6 fingers 33a to 33f corresponding to the 6 cams 32a to 32f. ing.
The six cams 32a to 32f are arranged with a phase difference from each other, and the cam structure 32 is connected to the output shaft 18a of the drive motor 18.
That is, when the drive motor 18 of FIG. 3 is driven and rotates, the plurality of fingers 33a to 33f are individually driven in the Y direction of FIG. 3 via the cams 32a to 32f, and the outer peripheral surface of the pump side tube 11a is shown in FIG. The chemical solution in the pump-side tube 11a is fed by sequentially pressing along the T direction of the pump.

That is, as described above, the liquid feeding drive unit 30 controls the peristaltic movements of the plurality of fingers 33a to 33f to sequentially move the fingers 33a to 33f back and forth so that the waves proceed as if they were moving. By moving the closing point in the pump-side tube 11a in the T direction, the pump-side tube 11a is squeezed to transfer the chemical solution.
Therefore, by reversing (operating) the rotation of the drive motor 18 in FIG. 3, the direction of feeding the chemical solution in the pump-side tube 11a can be changed in the opposite direction (the direction opposite to the T direction in FIG. 3). ..

The infusion pumps 10 and 100 shown in FIG. 1 have a computer, and the computer has a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like (not shown), and these are buses. It is connected via.

FIG. 4 is a schematic block diagram showing a main configuration of the infusion pump 10 shown in FIG. Since the infusion pump 110 has the same configuration as the infusion pump 10, only the infusion pump 10 will be described below.
As shown in FIG. 4, the infusion pump 10 has a "control unit 41", and the control unit 41 includes a "communication device 42" for the infusion pump 10 to communicate with a device or the like for storing a drug library or the like. It controls the display 21, the drive motor 18, the upstream side blockage sensor 16, the downstream side blockage sensor 17, and the like shown by the second magnitude.
The control unit 41 also controls the "first various information storage units 50", the "second various information storage units 60", and the "third various information storage units 70" shown in FIG.

5 to 7 are schematic block diagrams showing the main configurations of the "first various information storage units 50", the "second various information storage units 60", and the "third various information storage units 70", respectively. is there. The specific contents of these will be described later.

8 to 10 are schematic flowcharts showing a main operation example of the infusion pump system 1 according to the present embodiment.
In the present embodiment, as shown in FIG. 1, when the drug solution is administered to the patient P using the two infusion pumps 10 and 100, the downstream obstruction sensor 17 of the infusion pump 10 in FIG. 1 is sent from the infusion pump 100. The following will be described based on an example in which blockage of the pump-side tube 11a is detected first.

First, as shown in FIG. 1, for example, different types of chemicals to be administered to patient P are contained in two chemical bags 12a and 12b, and pump-side tubes 11a and 11b are connected to the respective chemical bags 12a and 12b. These pump-side tubes 11a and 11b are connected to the mixed injection portion 13.
Thus, two pump-side tube 11a, 11b is, via a mixing dispensing section 13 is connected to one part of the patient tube 14.
Further, the patient tube 14 will be connected to the patient P via the indwelling needle 15.

Further, as shown in FIG. 1, the infusion pumps 10 and 100 are arranged so as to accommodate the pump side tubes 11a and 11b inside.
In this state, in step 1 (referred to as “ST”), data of “scheduled liquid delivery amount information”, which is the planned liquid delivery amount of each drug solution to be administered to patient P, is input to the infusion pump 10 and the infusion pump 100.
Hereinafter, in the present embodiment, the infusion pump 10 will be mainly described, and the description of the infusion pump 100 having the same configuration will be omitted.
Specifically, the data of the "scheduled liquid delivery amount information" is stored in the "scheduled liquid supply amount information storage unit 51 on the infusion pump side" of the infusion pump 10 of FIG.

Next, the infusion pumps 10 and 100 operate to start the liquid feeding mode, for example, liquid feeding, and proceed to ST2. In ST2, the two infusion pumps 10 and 100 operate to start sending the drug solution at a predetermined speed, and the "downstream obstruction sensor 17" and the like of the two infusion pumps 10 and 100 are inside the pump side tube 11a and the like. For example, the measurement of "occlusion detection pressure", which is the state information in the pipe portion of the above, is started.

Then, the process proceeds to ST3 and ST4. In ST3, the “integrated liquid feed amount information calculation processing unit (program) 52” of FIG. 5 operates, and the “liquid feed amount reference information storage unit 53” of FIG. 5 is referred to. The liquid feed amount reference information storage unit 53 contains "liquid feed amount reference information" which is information on the relationship between the rotation speed of the drive motor 18 and the liquid feed amount, that is, how many times the drive motor 18 rotates and how much. Information about whether or not the amount of liquid to be sent is stored.

Therefore, the integrated liquid feeding amount information calculation processing unit (program) 52 obtains the "integrated liquid feeding amount information" of the infusion pump 10 from the default "liquid feeding amount reference information" and the "rotation amount" information of the drive motor 18. The calculation is performed and stored in the "integrated liquid feed amount information storage unit 54" of FIG.
In this way, the cumulative liquid feed amount information storage unit 54 stores information on the cumulative liquid feed amount of the infusion pump 10.

On the other hand, in ST4, the infusion pump 10 stores the blockage detection pressure of the “downstream blockage sensor 17” in the “downstream blockage detection value storage unit 55” of FIG.
Then, the process proceeds to ST5. In ST5, for example, the “infusion pump blockage determination processing unit (program) 61” which is the blockage determination unit of FIG. 6 operates, and the “infusion pump blockage reference value information storage unit 56” of FIG. 6 is referred to.
At this time, different numerical values may be stored in the infusion pump 10 and the infusion pump 100 of FIG. 1, and this is the case in the present embodiment.

That is, the infusion pump 100 has a value at the time of shipment of the infusion pump 100, for example, "60 kPa" is set as a "blockage reference value" for determining blockage, but the infusion pump 10 has been changed from the time of shipment to "30 kPa". Is set as the "blocking reference value".

Therefore, in the infusion pump 10, the "downstream blockage detection value" exceeds the blockage reference value based on the "downstream blockage detection value storage unit 55" and the "infusion pump blockage reference value information storage section 56" of FIG. Judge whether or not.
That is, the infusion pump 10 determines whether or not the "downstream blockage detection value" has reached "30 kPa".
On the other hand, the infusion pump 100 of FIG. 1 determines whether or not the "downstream side blockage detection value" has reached "60 kPa".

Then, the process proceeds to ST6. When the infusion pump 10 determines in ST6 that the "downstream blockage detection value" has reached "30 kPa", it determines that a "blockage state" has occurred and proceeds to ST7.
In ST7, a “blockage flag” is added in association with the corresponding detection value of the “downstream blockage detection value storage unit 55”.

At this time, since the "downstream side blockage detection value" of the infusion pump 100 of FIG. 1 has not reached "60 kPa", it is not yet determined that the infusion pump 100 is blocked, and the "blockage flag" is not attached.
Then, the process proceeds to ST8. In ST8, then operation "infusion pump reverse rotation processing section (program) 62" in FIG. 6, when the "closed busy flag" attached to "downstream occlusion detection value storage unit 55", the drive motor of the infusion pump 10 The 18 is operated in reverse operation, for example, in the counter-feeding mode.
At this time, the drive motor of the infusion pump 100 of FIG. 1 has not yet "reversed operation".
Therefore, if this state is continued, the chemical solution of the infusion pump 100 of FIG. 1 may flow (suction) into the infusion pump 10 via the mixed injection section 13.
Therefore, in the present embodiment, the following steps are executed.

First, ST9 and ST10 are executed. In ST9, the "reversal operation integrated liquid feed amount information calculation processing unit (program) 63" operates, and the "liquid feed amount reference information" of the "liquid feed amount reference information storage unit 53" of FIG. 5 and the "liquid feed amount reference information" of the drive motor 18 The "reverse operation integrated liquid feed amount information", which is the integrated liquid feed amount of the infusion pump 10 by the reverse operation of the infusion pump 10, is calculated from the "rotation amount" and the like, and the "reverse operation integrated liquid feed amount information storage unit 64" in FIG. Remember in.

In ST10, the infusion pump 10 continues to store the blockage detection pressure of the downstream blockage sensor 17 in the “downstream blockage detection value storage unit 55” of FIG.
Next, in ST11, the “infusion pump blockage elimination determination processing unit (program) 65” of FIG. 6 operates, and the “downstream blockage detection value storage unit 55” and the “infusion pump blockage relaxation reference value information storage unit 57” of FIG. 5 operate. It is determined whether or not the "downstream blockage detection value" is equal to or less than the blockage mitigation reference value.
That is, it is determined whether or not the blocked state generated in FIG. 1, for example, the state in which the pressure in the pump-side tube 11a and the like due to the bending of the patient-side tube 14 is increased has been resolved.

Next, when it is determined in ST12 that the downstream blockage detection value is equal to or less than the blockage mitigation reference value, the process proceeds to ST13.
In ST13, a resolution flag is added in association with the corresponding detection value of the “downstream blockage detection value storage unit 55” of FIG.

Then, the process proceeds to ST14. In ST14, when the “infusion pump reversal operation stop processing unit (program) 66” of FIG. 6 operates and the “downstream blockage detection value storage unit 55” of FIG. 5 is flagged for elimination, the infusion pump 10 is driven. The reverse operation of the motor 18 is stopped.
Therefore, it is possible to prevent the reverse operation of the drive motor 18 from being stopped and the chemical solution of the infusion pump 100 of FIG. 1 being sucked into the infusion pump 10 side as the state where the pressure in the pump side tube 11a and the like is increased is eliminated. ..
Further, when the obstructed state is resolved, it is possible to prevent the drug solution from being suddenly sent from the patient-side tube 14 to the patient P.

However, when it is determined in ST12 that the increased pressure in the pump-side tube 11a and the like has not been resolved, the drive motor 18 of the infusion pump 10 continues the reverse operation, so that the infusion pump of FIG. The chemical solution from the 100 side may be sucked through the mixed injection portion 13.
Therefore, in that case, the process proceeds to ST15. In ST15, the “scheduled liquid delivery amount arrival determination processing unit (program) 71” of FIG. 7 operates, and the “reverse operation integrated liquid supply amount information storage unit 63” of FIG. 6 and the “scheduled liquid delivery on the infusion pump side” of FIG. With reference to the "volume information storage unit 51", it is determined whether or not the "reversal operation integrated liquid feed amount" has reached the "planned liquid feed amount on the infusion pump side".

That is, when the movement of the chemical solution in the direction opposite to the liquid feeding direction exceeds the planned liquid feeding amount of the infusion pump 10, the chemical solution on the infusion pump 100 side of FIG. 1 is sucked into the infusion pump 10 side via the mixed injection portion 13. Since there is a high probability that this will happen, determine whether or not this is the case.

Therefore, when it is determined in ST16 that the "reversal operation integrated liquid feed amount" has reached the "planned liquid feed amount on the infusion pump side", the process proceeds to ST17 and the reverse operation of the drive motor 18 of the infusion pump 10 is stopped. ..
As a result, it is possible to prevent the chemical solution on the infusion pump 100 side of FIG. 1 from being sucked on the infusion pump 10 side.
Further, when the obstructed state is resolved, it is possible to prevent the drug solution from being suddenly sent from the patient-side tube 14 to the patient P.

On the other hand, even if the "reversal operation integrated liquid feed amount" does not reach the "planned liquid feed amount on the infusion pump side" in ST16, the chemical solution may be sucked from the infusion pump 100 in FIG. 1 to the infusion pump 10 side. ..
Therefore, in the present embodiment, the following steps are executed in order to prevent suction of the chemical solution from the infusion pump 100 to the infusion pump 10 side with higher accuracy.

First, in ST18, the “expected discharge chemical amount information generation processing unit (program) 72” of FIG. 7 operates to acquire the blockage detection value of the “downstream blockage detection value storage unit 55”. Then, refer to “Chemical solution amount information storage unit 73 corresponding to obstruction detection value” in FIG. 7.
The drug solution amount information storage unit 73 corresponding to the blockage detection value stores the assumed drug solution amount accumulated in the pump-side tube 11a or the like assumed by the blockage detection value, that is, when the blockage state is released at the blockage detection value. Information on the estimated amount of chemicals discharged from the pump-side tube 11a or the like is stored in advance for each blockage detection value.

Specifically, it is information on the estimated amount of chemical solution measured in advance by experiments or the like. This estimated chemical amount is an example of the expected retained liquid amount information. Further, the blockage detection value-corresponding drug solution amount information stored in the obstruction detection value-corresponding drug solution amount information storage unit 73 is an example of the tube section pressure value-corresponding expected liquid amount information.

Therefore, in ST18, the estimated drug solution amount corresponding to the obstruction detection value is acquired from the “occlusion detection value corresponding drug solution amount information storage unit 73” and stored in the “estimated drug solution amount information storage unit 74” of FIG.

Then, the process proceeds to ST19. In ST19, for example, the “estimated chemical amount determination processing unit (program) 75” which is the counter-feeding mode stop information generation unit of FIG. 7 operates, and the “reversal operation integrated liquid feeding amount information storage unit 64” of FIG. 6 operates. It is determined whether or not the "reversal operation integrated liquid feeding amount" has reached the "estimated chemical liquid amount" of the "estimated chemical liquid amount information storage unit 74" of FIG. 7.

That is, in the blockage detection value, the drive motor 18 is reversely operated by the amount of the chemical solution actually accumulated in the pump side tube 11a or the like, so that the drive motor 18 is effectively retained in the pump side tube 11a or the like. The chemical solution can be returned to the chemical solution bag 12a side, and the chemical solution on the infusion pump 100 side of FIG. 1 can be accurately prevented from being sucked into the infusion pump 10 side.
It is also possible to prevent the drug solution from being suddenly sent from the patient-side tube 14 to the patient P when the obstructed state is resolved.

Therefore, when it is determined in ST20 that the "reversal operation integrated liquid feed amount" has reached the "estimated chemical solution amount", the process proceeds to ST21 and the reverse operation of the drive motor 18 of the infusion pump 10 is stopped.
As described above, in the present embodiment, it is possible to accurately prevent the occurrence of the "suction phenomenon" in which the chemical solution from the infusion pump 100 is sucked to the infusion pump 10 side.

After the infusion pump 10 completes the delivery of the drug solution (the infusion pump side scheduled delivery amount storage unit 51 in FIG. 5 completes the delivery of the infusion pump side scheduled delivery amount), the downstream side is blocked. When the blockage detection value of the sensor 17 is determined to be blockage information, the “integrated liquid feed amount” of the “integrated liquid feed amount information storage unit 54” of FIG. 5 to the “planned liquid feed amount storage unit on the infusion pump side” of FIG. The "reversal operation integrated liquid supply amount" of the "reversal operation integrated liquid supply amount information storage unit 64" of FIG. 6 is obtained by subtracting the "reverse operation integrated liquid supply amount" of "51". When the amount of liquid to be fed is reached, the reverse operation of the drive motor 18 of the infusion pump 10 may be stopped.

As a result, it is possible to accurately prevent the chemical solution of the infusion pump 100 of FIG. 1 after the completion of the liquid transfer from being sucked into the infusion pump 10 side.

(Modified example of this embodiment)
Since many configurations of the infusion pump system 200 according to this modification are common to the configurations of the infusion pump system 1 according to the above-described embodiment, the differences will be mainly described below.
FIG. 11 is a schematic block diagram showing a main configuration of the infusion pump according to the present modification. In this modification, in FIG. 6 of the above-described embodiment, the “drug amount information storage unit 73 corresponding to the obstruction detection value”, the “expected discharge chemical amount information generation processing unit (program) 72”, and the “estimated chemical amount information storage unit 74” , And "Assumed chemical amount determination processing unit (program) 75", for example, the "blockage detection value drop determination processing unit (program)" shown in FIG. 11 which is a counter-feeding mode stop information generation unit is arranged. ..

FIG. 12 is a schematic flowchart showing a main operation example of the infusion pump system according to the present modification.
This flowchart shows the steps performed in place of ST18 to ST21 of FIG. 10 of the above-described embodiment.

In this modification, first, in ST31, the “blockage detection value drop determination processing unit (program) 81” of FIG. 11 operates, and the blockage detection of the “downstream side blockage detection value storage unit 55” of FIG. 5 within a predetermined time Refer to the values to determine if these values show a downward trend.
The information on whether or not the blockage detection value is on a downward trend is an example of pressure value change transition information.

That is, in this modified example, the tendency of the obstruction detection value of the downstream obstruction sensor 17 within a predetermined time is determined, and if the value is not downward, the state in which the pressure in the pump side tube 11a or the like due to obstruction is increased is eliminated. Instead, it is determined that the chemical solution of the infusion pump 100 of FIG. 1 may be sucked to the infusion pump 10 side via the mixed injection section 13.

Next, the process proceeds to ST32, and when the blockage detection value does not show a downward tendency, the process proceeds to ST33 to stop the reverse operation of the drive motor 18 of the infusion pump 10.
As described above, according to the present modification, when the blockage detection value does not show a downward tendency, the reverse operation of the drive motor 18 is immediately stopped, so that the chemical solution from the infusion pump 100 is mistakenly entered into the infusion pump 10. It is possible to prevent the occurrence of the "suction phenomenon" that causes suction to occur more quickly.
It is also possible to prevent the drug solution from being suddenly sent from the patient-side tube 14 to the patient P when the obstructed state is resolved.

In this modified example, it was quickly determined whether or not the pressure inside the pump-side tube 11a or the like due to the blockage was resolved based on the presence or absence of the decrease in the blockage detection value within the predetermined time, but this is not the case. Instead, the descent speed of the blockage detection value within a predetermined time may be obtained, and when the descent speed is equal to or less than the predetermined descent speed, the reverse rotation operation may be stopped.

The present invention is not limited to the above-described embodiments and the like.

1 ... Infusion pump system, 10, 100 ... Infusion pump, 11a, 11b ... Pump side tube, 12a, 12b ... Drug bag, 13 ... Mixed injection part, 14 ... Patient side tube , 15 ... Infusion needle, 16 ... Upstream blockage sensor, 17 ... Downstream blockage sensor, 18 ... Drive motor, 18a ... Output shaft 18a, 21 ... Display, 22 ... Various operation buttons, 22a ... pilot lamp, 22b ... fast forward switch button, 22c ... start switch button, 22d ... stop switch button, 22e ... menu selection button, 30 ... liquid feed drive Unit, 32 ... cam structure, 32a to 32f ... cam, 33 ... finger structure, 33a to 33f ... finger, 41 ... control unit, 42 ... communication device, 50.・ ・ First various information storage units, 51 ・ ・ ・ Scheduled infusion pump side information storage unit, 52 ・ ・ ・ Integrated liquid supply amount information calculation processing unit (program), 53 ・ ・ ・ Liquid supply amount reference information Storage unit, 54 ... Integrated liquid feed amount information storage unit, 55 ... Downstream blockage detection value storage unit, 56 ... Infusion pump blockage reference value information storage unit, 57 ... Infusion pump blockage relief reference value Information storage unit, 60 ... 2nd various information storage units, 61 ... Infusion pump blockage judgment processing unit (program), 62 ... Infusion pump reverse operation processing unit (program), 63 ... Reverse operation Integrated liquid supply amount information calculation processing unit (program), 64 ... Reverse operation Integrated liquid supply amount information storage unit, 65 ... Infusion pump blockage elimination judgment processing unit (program), 66 ... Infusion pump reverse operation stop Processing unit (program), 70 ... 3rd various information storage units, 71 ... Scheduled infusion amount arrival determination processing unit (program), 72 ... Expected discharged chemical amount information generation processing unit (program), 73 ... Infusion amount information storage unit corresponding to obstruction detection value, 74 ... Estimated infusion amount information storage unit, 75 ... Estimated infusion amount judgment processing unit (program), P ... Patient

Claims (5)

Multiple medical pumps that send the liquid contained in the tube ,
A medical pump system including a mixed injection unit that connects the pipe portion to be arranged to each of the plurality of medical pumps and connects the pipe portion to the subject side that is connected to the subject .
The medical pump
At least, a liquid transfer unit that can switch between a liquid transfer mode in which the liquid in the pipe portion is moved in the liquid transfer direction and a counter liquid transfer mode in which the liquid is moved in the reverse liquid transfer direction.
An in- pipe state information detection unit that detects pressure value information in the pipe, which is the pressure value in the pipe ,
A blockage determination unit that generates blockage information of the pipe portion based on the pressure value information in the pipe portion is provided.
The liquid moving unit is configured to be operated in the liquid feeding mode and then changed to the operation in the counter-feeding mode based on the blockage information.
Possess anti liquid delivery mode stop information generating unit that generates a reaction liquid delivery mode stop information that is in the stop information of the anti-liquid feed mode based on said pipe section pressure value information,
If the obstruction information does not reach the obstruction mitigation reference information during the counter-feeding mode operation, the reversal operation integrated liquid feeding information of the counter-feeding mode is scheduled to be the planned amount of liquid to be administered to the subject. Judge whether the liquid delivery amount information has been reached,
When the planned liquid feed amount information has not been reached, the reverse operation integrated liquid feed amount information reaches the expected stagnant liquid amount information stagnant in the pipe portion assumed by the blockage information. A medical pump system characterized by generating backflip mode stop information . The counter-feeding mode stop information generation unit generates the counter-feeding mode stop information based on the pressure value change transition information which is the change transition information of the pressure value information in the pipe portion during the execution of the counter-feeding mode. ,
The medical pump system according to claim 1, wherein the pressure value change transition information is whether or not the pressure value has a downward trend . Based on the pressure value change trend information is the change trend information of said pipe section pressure value information during execution of anti-liquid transfer mode, the anti-liquid feed mode stop information generation unit to generate the counter-liquid feed mode stop information ,
The medical pump system according to claim 1, wherein the pressure value change transition information is whether or not the descent speed within a predetermined time is within a predetermined range . A liquid moving unit capable of switching between a liquid feeding mode in which a plurality of medical pumps move the liquid contained in the pipe portion in the liquid feeding direction and a counter liquid feeding mode in which the liquid is moved in the counter-feeding direction, and the pipe. An in-pipe state information detecting unit that detects pressure value information in the pipe, which is a pressure value in the unit, and a mixed injection unit that connects the pipes to the target side pipe connected to the target person. It is a method of operating the medical pump system that has
Based on the pressure value information in the pipe part, the blockage information of the pipe part is generated.
After operating the liquid moving unit in the liquid feeding mode, the liquid moving unit is changed to the operation in the counter-feeding mode based on the blockage information.
Based on the pressure value information in the pipe portion, the counter-feeding mode stop information which is the stop information of the counter-feeding mode is generated.
If the obstruction information does not reach the obstruction mitigation reference information during the counter-feeding mode operation, the reversal operation integrated liquid feeding information of the counter-feeding mode is scheduled to be the planned amount of liquid to be administered to the subject. Judge whether the liquid feed amount information has been reached,
When the planned liquid feed amount information has not been reached, the reverse operation integrated liquid feed amount information reaches the expected stagnant liquid amount information stagnant in the pipe portion assumed by the blockage information. A method of operating a medical pump system , which comprises generating backflip mode stop information . A liquid moving unit capable of switching between a liquid feeding mode in which a plurality of medical pumps move the liquid contained in the pipe portion in the liquid feeding direction and a counter liquid feeding mode in which the liquid is moved in the counter-feeding direction, and the pipe. An in-pipe state information detecting unit that detects pressure value information in the pipe, which is a pressure value in the unit, and a mixed injection unit that connects the pipes to the target side pipe connected to the target, respectively. a medical pump system including,
A step of generating blockage information of the pipe portion based on the pressure value information in the pipe portion, and
The liquid transfer unit, after operating in the liquid feed mode, and based on the occlusion information, Ru is changed to the operation of the anti-feed liquid mode processes,
A step of generating the counter-feeding mode stop information which is the stop information of the counter-feeding mode based on the state information in the pipe portion , and
If the obstruction information does not reach the obstruction mitigation reference information during the counter-feeding mode operation, the reversal operation integrated liquid feeding information of the counter-feeding mode is scheduled to be the planned amount of liquid to be administered to the subject. The process of determining whether or not the liquid feed amount information has been reached, and
When the planned liquid feed amount information has not been reached, the reverse operation integrated liquid feed amount information reaches the expected stagnant liquid amount information staying in the pipe portion assumed by the blockage information. Including the step of generating the reverse liquid feed mode stop information.
A control program for a medical pump system characterized by performing these steps .

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