WO2017086457A1

WO2017086457A1 - Medical pump, medical pump system, medical pump control method, and medical pump control program

Info

Publication number: WO2017086457A1
Application number: PCT/JP2016/084313
Authority: WO
Inventors: 昭彦八木
Original assignee: テルモ株式会社
Priority date: 2015-11-20
Filing date: 2016-11-18
Publication date: 2017-05-26
Also published as: JP6792564B2; JPWO2017086457A1

Abstract

[Problem] To provide a medical pump and the like capable of precisely preventing the occurrence of a "suction phenomenon" in which a liquid medicine is suctioned from one medical pump side to another medical pump side. [Solution] This medical pump 10 is provided with: a liquid moving unit 30 capable of switching between a feed mode in which a liquid accommodated in a pipe section 11a is fed and the liquid inside the tube section is moved in the feeding direction, and a counterfeed mode in which the liquid is moved in a counterfeed direction; an tube section inner condition information detection unit 17 for detecting tube section inner condition information of inside the tube section; and a blockage determination unit 61 for generating blockage information of the tube section on the basis of the tube section inner condition information of the condition information detection unit. The medical pump 10 is configured such that the liquid moving unit changes to operation of the counterfeed mode on the basis of the blockage information of the blockage determination unit after operating in the feed mode, and has a counterfeed mode stop information generation unit 75 for generating counterfeed mode stop information, which is stop information for the counterfeed mode, on the basis of the tube section inner condition information.

Description

MEDICAL PUMP, MEDICAL PUMP SYSTEM, MEDICAL PUMP CONTROL METHOD, AND MEDICAL PUMP CONTROL PROGRAM

The present invention relates to, for example, a medical pump, a medical pump system, a medical pump control method, and a medical pump control program for sending a medical solution or the like to a patient or 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.
Such a medical pump administers a drug solution containing a drug or the like to a patient via a tube.
However, the tube may be blocked when the tube is bent or twisted during the administration of the drug solution.
If the medical pump continues to feed the drug solution even during the occlusion, the pressure increases in the tube, and therefore, the drug solution may be rapidly sent to the patient when the occlusion is released.
Therefore, for example, in a syringe pump, when the blockage sensor detects blockage, a proposal has been made to alleviate the pressure increase by causing the motor to reversely rotate without continuously feeding liquid (for example, Patent Document 1). etc).

JP 2002-113099 A

By the way, a medical solution may be administered to a patient using a plurality of medical pumps. In this case, the tubes containing the chemicals sent by each medical pump are not sent separately to the patient via needles, catheters, etc., and finally through the co-infusion unit, into one tube, In many cases, each chemical is sent.
In addition, since each of the plurality of medical pumps has a separate occlusion sensor, a difference in pressure detection accuracy, a difference in occlusion determination setting, and the like are generated by each occlusion sensor.

When such a medical pump administers a drug solution to a patient or the like with a single tube via a co-infusion unit, when the tube is clogged, the timing for determining the clogging for each medical pump is different. There is a fear. That is, a certain medical pump detects a blockage and reversely operates (operates) the motor, while another medical pump continues to execute a liquid feeding operation.
In this case, the following problems may occur in the “mixed injection portion” to which each tube of each medical pump is connected.
In other words, there is a problem that a “suction phenomenon” occurs in which the chemical liquid or the like of the medical pump that is continuously performing liquid feeding is sucked through the “mixed part” to the medical pump that is performing the reverse rotation operation. There is.

Therefore, the present invention provides a medical pump, a medical pump system, and a medical pump that can accurately prevent the occurrence of a “suction phenomenon” in which a chemical solution is sucked from one medical pump side to another medical pump side. It is an object of the present invention to provide a pump control method and a medical pump control program.

In the present invention, the above object is a medical pump for feeding a liquid contained in a pipe part, and at least a liquid feeding mode for moving the liquid in the pipe part in the liquid feeding direction, and a reverse feed. Based on the in-pipe state information, the in-pipe state information detecting unit for detecting the in-pipe state information that is the state information in the tube, the liquid moving unit that can be switched to the liquid feeding mode to move in the liquid direction, A blockage determining unit that generates blockage information of the tube unit, and the liquid moving unit is changed to the operation of the counter liquid feeding mode based on the blockage information after being operated in the liquid feeding mode. And a medical pump characterized by having a refeeding mode stop information generating unit that generates repelling mode stop information that is stop information of the repelling mode based on the in-pipe state information Is achieved.

According to the above configuration, after the liquid moving unit is operated in the liquid feeding mode, the liquid moving unit is changed to an operation in the counter liquid feeding mode (for example, reverse operation (actuation)) based on the blockage information of the blockage determination unit. The reaction liquid supply mode stop information generation unit (for example, “assumed drug solution amount determination processing unit” “ A blockage detection value drop determination processing unit ").
In this way, since the liquid feeding mode stop information is generated based on the in-pipe state information, the liquid feeding mode can be stopped at an appropriate timing, and the tube of the infusion pump is connected to the tubes of other infusion pumps. Even when other infusion pumps are connected in the liquid delivery mode and are connected at the “mixed injection part”, the occurrence of the “suction phenomenon” in which liquids such as chemicals are sucked from the other infusion pumps to the infusion pump side with high accuracy It can be prevented in advance.
In addition, when the occlusion is resolved, it is possible to prevent a drug solution or the like from being rapidly sent from the tube to the patient.

Preferably, the state information in the pipe part is pressure value information in the pipe part which is a pressure value in the pipe part, and when the pressure value information in the pipe part corresponds to information indicating a block state in the pipe part, In the pipe portion, the liquid feed mode stop information generation unit stores the liquid feed mode stop information generation unit based on the liquid prediction mode information. Mode stop information is generated.

According to the above-described configuration, the reaction liquid supply mode stop information generation unit generates the reaction liquid supply mode stop information based on the expected liquid amount information (for example, the assumed chemical liquid amount). The counter liquid feeding mode is executed only for the amount of information on the expected staying liquid amount.
Therefore, the occurrence of a “suction phenomenon” in which a liquid such as a chemical solution is sucked from the other infusion pump toward the infusion pump can be prevented with higher accuracy.
In addition, when the occlusion is resolved, it is possible to prevent a drug solution or the like from being rapidly sent from the tube to the patient.

Preferably, the state information in the pipe part is pressure value information in the pipe part that is a pressure value in the pipe part, and a pressure value change that is change transition information in the pressure value information in the pipe part during execution of the reaction liquid feeding mode. Based on the transition information, the reaction liquid supply mode stop information generation unit generates the reaction liquid supply mode stop information.

According to the above configuration, the reaction liquid supply mode stop information generation unit performs pressure value change transition information (for example, “the blockage detection value tends to decrease) that is the change transition information of the pressure value information in the pipe part during execution of the reaction liquid supply mode. Or the like ”,“ whether or not the speed is equal to or lower than a predetermined descent speed ”, etc.) is generated.
Therefore, even when the liquid feeding mode is being executed, when the pressure value change transition information does not decrease, for example, when the pressure falling speed is not within a predetermined range, the liquid feeding mode stop information generation unit However, the liquid feeding mode stop information is generated.
Therefore, it is possible to prevent the occurrence of a “suction phenomenon” in which a liquid such as a chemical solution is sucked from the other infusion pump toward the infusion pump.
In addition, when the occlusion is resolved, it is possible to prevent a drug solution or the like from being rapidly sent from the tube to the patient.

Preferably, there are a plurality of the medical pumps, and each of the pipe parts that contain the liquid that is fed by the medical pumps is connected to a subject side pipe part that is connected to the subject; It is characterized by being connected.

In the present invention, at least the liquid moving unit that can be switched between the liquid feeding mode for moving the liquid accommodated in the pipe portion in the liquid feeding direction and the liquid feeding mode for moving in the counter liquid feeding direction. And a tube internal state information detection unit for detecting internal tube state information, which is state information in the tube part, and is a method of controlling a medical pump, wherein the tube unit is blocked based on the internal tube state information. After generating the information and operating the liquid moving unit in the liquid feeding mode, the liquid moving unit is changed to the operation of the liquid feeding mode based on the blockage information, and the liquid feeding unit is operated based on the state information in the pipe part. This is achieved by a method for controlling a medical pump, characterized by generating stop liquid feeding mode stop information that is mode stop information.

In the present invention, at least the liquid moving unit that can be switched between the liquid feeding mode for moving the liquid accommodated in the pipe portion in the liquid feeding direction and the liquid feeding mode for moving in the counter liquid feeding direction. A tube pump state information detecting unit for detecting pipe part state information that is state information in the pipe part, and generating blockage information of the pipe part based on the pipe part state information. And after the liquid moving part is operated in the liquid feeding mode, the liquid moving part is changed to the operation in the counter liquid feeding mode based on the blockage information, and the liquid feeding part is based on the in-pipe state information. And a step of generating counter-feeding mode stop information, which is mode stop information, is executed by a medical pump control program.

As described above, according to the present invention, a medical pump that can accurately prevent the occurrence of a “suction phenomenon” in which a drug solution is sucked from one medical pump side to another medical pump side. Pump system, medical pump control method, and medical pump control program can be provided.

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

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

FIG. 1 is a schematic view of an infusion pump system 1, for example, 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, pump-

side tubes

11a and 11b that are pipe portions are disposed inside the medical pump, and the pump-

side tubes

11a and 11b are pressed to the inside of the pump-

side tubes

11a and 11b. An example of using two infusion pumps 10 and 100 for feeding a chemical solution, for example, will be described below. A syringe pump having a syringe inside and extruding a chemical solution with this syringe is used. It doesn't matter.

As shown in FIG. 1, the present system 1 has two infusion pumps 10, 100, and a chemical solution bag that stores the chemical solution therein to supply the infusion pumps 10, 100 to the respective infusion pumps 10, 100. 12a and 12b are arranged.
These

drug bags

12a and 12b are configured to supply a chemical solution via the

pump side tubes

11a and 11b, respectively, but these

pump side tubes

11a and 11b are partially infused as shown in FIG. The

pumps

10 and 100 are arranged inside.

Moreover, the two

pump side tubes

11a and 11b are each connected to the co-injection part 13 as shown in FIG.
The mixed injection part 13 is connected to, for example, a patient side tube 14 that is a subject side tube part, and the patient side tube 14 is connected to a blood vessel such as an 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 in FIG. 1 are combined at the co-injection unit 13 and are administered to the patient via the patient-side tube 14 and the indwelling needle 15 or the like.

FIG. 2 is a schematic perspective view showing the main configuration of the infusion pump 10 of FIG. Since the infusion pump 100 has the same configuration as the infusion pump 10, the description thereof is omitted.
As shown in FIG. 1, the infusion pump 10 has a display 21 that is a display unit that displays various types of information and also includes various operation buttons 22 as shown in FIG. 2.
For example, a pilot lamp 22a that includes an LED inside, emits and displays light through a light diffusing agent, and indicates the operating state of the infusion pump 10, and fast-forward for injecting a chemical at an injection rate faster than a 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 11 a disposed therein and feeding a chemical solution therein, for example, a liquid feed drive Part 30 is arranged.
In addition, on the upstream side (the drug bag 12a side) of the liquid supply driving unit 30, a tube internal state information detection unit that detects a blockage or the like in the pump side tube 11a on the upstream side of the liquid supply drive unit 30, for example, An upstream blockage sensor 16 is disposed. On the other hand, on the downstream side (mixed injection portion 13 side) of the liquid feeding drive unit 30, a downstream blockage sensor which is a pipe internal state information detection unit that detects blockage in the pump side tube 11a downstream from the liquid feeding drive unit 30. 17 is arranged.
The upstream blockage sensor 16 and the downstream blockage sensor 17 are pressure sensors, for example, and are configured to detect the pressure in the pump side tube 11a.

FIG. 3 is a schematic explanatory diagram showing a main configuration of the liquid feeding drive unit 30 of the infusion pump 10 shown in FIGS. 1 and 2.
As shown in FIG. 3, the liquid feeding drive unit 30 includes a cam structure 32 and a finger structure 33, and has a structure for controlling the liquid feeding of the chemical solution in the pump side tube 11 a with these structures. .
That is, the operation of the cam structure 32 is configured to accurately control the feeding of the chemical solution in the pump side tube 11a.

Specifically, it has a plurality of cams, for example, six cams 32a to 32f, and the finger structure 33 has six fingers 33a to 33f corresponding to the six cams 32a to 32f. ing.
The six cams 32 a to 32 f are arranged with a phase difference from each other, and the cam structure 32 is connected to the output shaft 18 a of the drive motor 18.
That is, when the drive motor 18 of FIG. 3 is driven and rotated, 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. Are sequentially pressed along the T direction to feed the chemical solution in the pump side tube 11a.

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 wave proceeds. By moving the blockage 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 rotating the drive motor 18 in FIG. 3 in reverse (operation), the liquid feeding direction of the chemical liquid in the pump side tube 11a can be changed in the reverse direction (the direction opposite to the T direction in FIG. 3). .

The infusion pumps 10 and 100 shown in FIG. 1 have a computer, which includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), etc., which are not shown. Connected through.

FIG. 4 is a schematic block diagram showing the 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 includes a “control unit 41”, and the control unit 41 includes a “communication device 42” and a diagram for the infusion pump 10 to communicate with a device that stores a drug library and the like. The display 21, the drive motor 18, the upstream block sensor 16, the downstream block sensor 17, and the like indicated by 2 and the like are controlled.
The control unit 41 also controls the “first various information storage unit 50”, the “second various information storage unit 60”, and the “third various information storage unit 70” shown in FIG.

FIGS. 5 to 7 are schematic block diagrams showing main configurations of the “first various information storage unit 50”, the “second various information storage unit 60”, and the “third various information storage unit 70”, respectively. is there. Specific contents thereof will be described later.

FIG. 8 thru | or FIG. 10 is a schematic flowchart which shows the main operation examples etc. of the infusion pump system 1 which concerns on this Embodiment.
In the present embodiment, as shown in FIG. 1, the downstream occlusion sensor 17 of the infusion pump 10 of FIG. Based on the example which detected the blockade of the pump side tube 11a previously, it demonstrates below.

First, as shown in FIG. 1, for example, different types of chemical solutions to be administered to a patient P are accommodated in two

chemical solution bags

12a and 12b, and pump

side tubes

11a and 11b are connected to the

chemical solution bags

12a and 12b, respectively. These pump

side tubes

11 a and 11 b are connected to the mixed injection part 13.
As a result, the two pump-

side tubes

11 a and 11 b are connected to one patient-side tube 14 via the mixed portion 13.
Further, the patient tube 14 is connected to the patient P through the indwelling needle 15.

Moreover, as shown in FIG. 1, the infusion pumps 10 and 100 are arrange | positioned so that the

pump side tubes

11a and 11b may be accommodated inside.
In this state, in step (referred to as “ST”) 1, data of “scheduled liquid feeding amount information” that is a planned liquid feeding amount of each drug solution to be administered to the 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 infusion amount information” is stored in the “infusion pump side scheduled infusion amount information storage unit 51” of the infusion pump 10 in FIG.

Next, the infusion pumps 10 and 100 are operated to start the liquid feeding mode, for example, liquid feeding, and proceed to ST2. In ST2, the two infusion pumps 10 and 100 are operated to start feeding the medicinal solution at a predetermined speed, and the “downstream blockage sensor 17” of the two infusion pumps 10 and 100 and the like in the pump side tube 11a and the like. For example, measurement of “occlusion detection pressure” is started.

Next, proceed to ST3 and ST4. In ST3, the “integrated liquid feeding amount information calculation processing unit (program) 52” in FIG. 5 operates and refers to the “liquid feeding amount reference information storage unit 53” in FIG. In the liquid supply amount reference information storage unit 53, “liquid supply amount reference information” that is the relationship information between the rotational speed of the drive motor 18 and the liquid supply amount, that is, how many times the drive motor 18 rotates. Information about whether the amount of liquid to be fed is stored.

Therefore, the integrated liquid supply amount information calculation processing unit (program) 52 obtains the “integrated liquid supply amount information” of the infusion pump 10 from the predetermined “liquid supply amount reference information” and the “rotation amount” information of the drive motor 18. The calculated value is stored in the “integrated liquid feeding amount information storage unit 54” in FIG.
As described above, the cumulative liquid supply amount information storage unit 54 stores information on the cumulative liquid supply amount of the medical solution 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.
Next, the process proceeds to ST5. In ST5, for example, the “infusion pump blockage determination processing unit (program) 61”, which is the blockage determination unit in FIG. 6, operates and refers to the “infusion pump blockage reference value information storage unit 56” in FIG.
At this time, different numerical values may be stored in the infusion pump 10 and the infusion pump 100 in FIG. 1, and this case corresponds to this case.

In other words, the infusion pump 100 uses, for example, “60 kPa”, which is a value at the time of shipment of the infusion pump 100, as a “clogging reference value” for determining that it is clogged. Is set as the “blocking reference value”.

Therefore, the infusion pump 10 determines that the “downstream side occlusion detection value” exceeds the occlusion reference value based on the “downstream occlusion detection value storage unit 55” and the “infusion pump occlusion reference value information storage unit 56” in FIG. Determine whether or not.
That is, the infusion pump 10 determines whether or not the “downstream blocking detection value” reaches “30 kPa”.
On the other hand, the infusion pump 100 in FIG. 1 determines whether or not the “downstream blockage detection value” has reached “60 kPa”.

Next, the process proceeds to ST6. In ST6, when the infusion pump 10 determines that the “downstream blocking detection value” has reached “30 kPa”, it determines that a “blocking state” has occurred, and proceeds to ST7.
In ST7, the “blocking flag” is attached in association with the corresponding detection value in the “downstream blocking detection value storage unit 55”.

At this time, in the infusion pump 100 of FIG. 1, since the “downstream blockage detection value” has not reached “60 kPa”, it is not yet determined that the blockage is blocked, and the “blockage flag” is not added.
Next, the process proceeds to ST8. In ST8, when the “infusion pump reverse rotation operation processing unit (program) 62” of FIG. 6 is operated and the “downstream closing detection value storage unit 55” is assigned a “closed flag”, the drive motor 18 of the infusion pump 10 is operated. In the reverse liquid feeding mode, for example, the reverse operation is performed.
At this time, the drive motor of the infusion pump 100 in FIG.
For this reason, if this state is continued, there exists a possibility that the chemical | medical solution of the infusion pump 100 of FIG. 1 may flow (suction) into the infusion pump 10 through the co-infusion part 13.
Therefore, in the present embodiment, the following steps are executed.

First, ST9 and ST10 are executed. In ST9, the “reverse operation integrated liquid supply amount information calculation processing unit (program) 63” operates, and “liquid supply amount reference information” in the “liquid supply amount reference information storage unit 53” in FIG. “Reverse operation integrated liquid supply information”, which is the amount of chemical solution integrated by the reverse operation of the infusion pump 10, is calculated from the “rotation amount” and the like, and the “reverse operation integrated liquid supply information storage unit 64” in FIG. To remember.

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” in FIG. 6 operates, and the “downstream blockage detection value storage unit 55” and the “infusion pump blockage relaxation reference value information storage unit 57” in FIG. Is determined whether the “downstream blockage detection value” is equal to or less than the blockage relaxation reference value.
That is, it is determined whether or not the closed state generated in FIG. 1, for example, the state where the pressure in the pump side tube 11a or the like due to the bending of the patient side tube 14 has increased is eliminated.

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

Next, the process proceeds to ST14. In ST14, the “infusion pump reverse rotation operation stop processing unit (program) 66” of FIG. 6 operates, and when the “downstream blockage detection value storage unit 55” of FIG. The reverse rotation operation of the motor 18 is stopped.
Accordingly, the reverse operation of the drive motor 18 is stopped together with the cancellation of the increased pressure in the pump side tube 11a and the like, and the liquid medicine of the infusion pump 100 of FIG. 1 can be prevented from being sucked to the infusion pump 10 side. .
In addition, when the occluded state is resolved, it is possible to prevent the drug solution from being rapidly 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 or 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. There is a possibility that the chemical solution from the 100 side may be sucked through the co-injection unit 13.
Therefore, in this case, the process proceeds to ST15. In ST15, the “scheduled liquid delivery amount arrival determination processing unit (program) 71” in FIG. 7 operates, and the “reverse operation integrated liquid delivery amount information storage unit 63” in FIG. 6 and the “infusion pump side scheduled liquid delivery” in FIG. With reference to the “volume information storage unit 51”, it is determined whether or not the “reverse operation integrated liquid supply amount” has reached the “infusion pump side planned liquid supply amount”.

That is, when the movement of the liquid medicine in the direction opposite to the liquid feed direction exceeds the planned liquid feed amount of the infusion pump 10, the liquid medicine on the infusion pump 100 side of FIG. 1 is sucked into the infusion pump 10 side through the co-infusion unit 13. Therefore, it is determined whether or not such a situation has occurred.

Therefore, when it is determined in ST16 that the “reverse operation integrated liquid supply amount” has reached the “infusion pump-side scheduled liquid supply amount”, the process proceeds to ST17 and the reverse operation of the drive motor 18 of the infusion pump 10 is stopped. .
Thereby, it can prevent that the chemical | medical solution by the side of the infusion pump 100 of FIG. 1 is attracted | sucked by the infusion pump 10 side.
In addition, when the occluded state is resolved, it is possible to prevent the drug solution from being rapidly sent from the patient side tube 14 to the patient P.

On the other hand, even when the “reverse operation integrated liquid supply amount” does not reach the “infusion pump-side scheduled liquid supply amount” in ST16, the liquid medicine 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 the suction of the chemical solution from the infusion pump 100 to the infusion pump 10 side with higher accuracy.

First, in ST18, the “expected discharged chemical amount information generation processing unit (program) 72” in FIG. 7 operates to acquire the blockage detection value of the “downstream blockage detection value storage unit 55”. Then, the “blockage detection value corresponding chemical liquid amount information storage unit 73” in FIG. 7 is referred to.
In the blockage detection value corresponding chemical liquid amount information storage unit 73, when the blockage state is released at the blockage detection value, the estimated liquid amount accumulated in the pump side tube 11a or the like assumed by the blockage detection value is stored. Information on the estimated amount of the chemical discharged from the pump side tube 11a and the like is stored in advance for each blockage detection value.

Specifically, it is information on the estimated amount of the chemical solution measured in advance through experiments or the like. In addition, this estimated chemical | medical solution amount is an example of anticipated staying liquid amount information. Further, the occlusion detection value corresponding chemical liquid amount information stored in the occlusion detection value corresponding chemical liquid amount information storage unit 73 is an example of the expected liquid amount information corresponding to the in-pipe pressure value.

Therefore, in ST18, the assumed chemical liquid amount corresponding to the detected occlusion value is acquired from the “occlusion detected value corresponding chemical liquid information storage unit 73” and stored in the “assumed chemical liquid amount information storage unit 74” of FIG.

Next, proceed to ST19. In ST19, for example, the “supposed chemical liquid amount determination processing unit (program) 75” which is the counter liquid feeding mode stop information generation unit in FIG. 7 operates, and the “reverse operation integrated liquid feeding amount information storage unit 64” in FIG. It is determined whether or not the “reverse operation integrated liquid supply amount” has reached the “assumed chemical liquid amount” in the “assumed chemical liquid amount information storage unit 74” in FIG.

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

Therefore, when it is determined in ST20 that the “reverse operation integrated liquid supply amount” has reached the “assumed drug 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 into the infusion pump 10 side.

In addition, after the liquid delivery of the chemical solution by the infusion pump 10 is completed (the delivery of the “infusion pump side scheduled delivery amount” in the “infusion pump side scheduled delivery amount storage unit 51” in FIG. 5 is completed), the downstream side occlusion When it is determined that the clogging detection value of the sensor 17 is the clogging information, the “integrated liquid feeding amount storage unit 54” in FIG. 5 to the “infusion pump side scheduled liquid feeding amount storage unit” in FIG. 51 ”is obtained by subtracting the“ planned liquid delivery amount on the infusion pump side ”51, and the“ reverse operation integrated liquid supply amount ”in the“ reverse operation integrated liquid supply information storage unit 64 ”in FIG. A configuration may be adopted in which the reverse rotation operation of the drive motor 18 of the infusion pump 10 is stopped when the amount of liquid delivery is reached.

Thereby, it is possible to accurately prevent the chemical solution of the infusion pump 100 of FIG. 1 after the completion of the liquid feeding from being sucked to the infusion pump 10 side.

(Modification of this embodiment)
Since many configurations of the infusion pump system 200 according to the present modification are common to the configurations of the infusion pump system 1 according to the above-described embodiment, the following description will focus on differences.
FIG. 11 is a schematic block diagram showing the main configuration of the infusion pump according to this modification. In the present modification, the “closure detection value corresponding chemical liquid amount information storage unit 73”, “predicted discharge chemical liquid amount information generation processing unit (program) 72”, and “assumed chemical liquid amount information storage unit 74” of FIG. ”And“ assumed chemical liquid amount determination processing unit (program) 75 ”, for example, a“ clogging detection value drop determination processing unit (program) ”of FIG. .

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

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

That is, in this modification, the tendency of the blockage detection value of the downstream blockage sensor 17 within a predetermined time is judged, and when the value is not in a downward trend, the state in which the pressure in the pump side tube 11a or the like is increased due to blockage is eliminated. Without the determination, it is determined that there is a possibility that the chemical solution of the infusion pump 100 of FIG. 1 may be sucked to the infusion pump 10 side through the co-infusion unit 13.

Next, the process proceeds to ST32, and when the blockage detection value does not show a downward tendency, the process proceeds to ST33, and the reverse operation of the drive motor 18 of the infusion pump 10 is stopped.
As described above, according to the present modification, when the blockage detection value does not show a downward tendency, the reverse rotation operation of the drive motor 18 is immediately stopped, so that the liquid medicine from the infusion pump 100 is mistakenly entered into the infusion pump 10. Occurrence of the “suction phenomenon” to be sucked can be prevented in advance.
In addition, when the occlusion is resolved, it is possible to prevent the drug solution from being rapidly sent from the patient side tube 14 to the patient P.

In this modification, the presence or absence of the increased pressure in the pump-side tube 11a or the like due to the blockage is quickly determined based on whether or not the blockage detection value falls within a predetermined time. However, the present invention is not limited to this. Instead, the descending speed of the blockage detection value within a predetermined time may be obtained, and the reverse rotation operation may be stopped when it is equal to or lower than the predetermined descending speed.

The present invention is not limited to the above-described embodiment.

DESCRIPTION OF SYMBOLS 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 ... Indwelling needle, 16 ... Upstream block sensor, 17 ... Downstream block 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 32, cam structure, 32a to 32f, cam, 33 ... finger structure, 33a to 33f, finger, 41 ... control unit, 42 ... communication 50 ... first various information storage units, 51 ... infusion pump side scheduled liquid supply information storage unit, 52 ... integrated liquid supply information calculation processing unit (program), 53 ... feed Liquid amount reference information storage unit, 54... Integrated liquid supply amount information storage unit, 55... Downstream blockage detection value storage unit, 56. Blocking alleviation reference value information storage unit, 60 ... second various information storage units, 61 ... infusion pump blockage determination processing unit (program), 62 ... infusion pump reverse rotation operation processing unit (program), 63 ..Reverse operation integrated liquid supply information calculation processing section (program), 64... Reverse operation integrated liquid supply information storage section, 65... Infusion pump blockage elimination determination processing section (program), 66. Pump reverse rotation stop processing part (program), 70 ... 3. Various information storage units, 71... Scheduled liquid delivery amount arrival determination processing unit (program), 72... Expected liquid discharge amount information generation processing unit (program), 73. Storage unit, 74 ... Assumed drug solution amount information storage unit, 75 ... Assumed drug solution amount judgment processing unit (program), P ... Patient

Claims

A medical pump for feeding a liquid contained in a pipe part,
At least, a liquid transfer mode for moving the liquid in the tube section in the liquid feed direction, and a liquid moving section that can be switched to a counter liquid feed mode for moving in the counter liquid feed direction;
An in-pipe state information detection unit that detects in-pipe state information that is state information in the pipe, and
A blockage determination unit that generates blockage information of the tube unit based on the state information in the tube unit,
The liquid moving unit is configured to be changed to the operation of the counter liquid feeding mode based on the blockage information after being operated in the liquid feeding mode.
A medical pump, comprising: a liquid feeding mode stop information generating unit that generates counter liquid feeding mode stop information that is stop information of the liquid feeding mode based on the in-pipe state information.
When the in-pipe state information is in-pipe pressure value information, which is a pressure value in the pipe, and the in-pipe pressure value information corresponds to information indicating a closed state in the pipe, the pipe is retained due to the blockage. Storing the expected liquid amount information corresponding to the pressure value in the pipe section for storing the expected liquid amount information,
2. The medical pump according to claim 1, wherein the reaction liquid supply mode stop information generation unit generates the reaction liquid supply mode stop information based on the expected liquid amount information.
The state information in the pipe part is pressure value information in the pipe part that is a pressure value in the pipe part, and pressure value change transition information that is change transition information in the pressure value information in the pipe part during execution of the reaction liquid feeding mode. 2. The medical pump according to claim 1, wherein the counterfeed mode stop information generation unit generates the counterfeed mode stop information.
A plurality of the medical pumps;
Each said pipe part which stores the liquid which the medical pump sends is configured to be connected to a mixed injection part connected to a subject side pipe part connected to the subject. A medical pump system comprising the medical pump according to any one of claims 1 to 3.
At least a liquid feeding mode for moving the liquid contained in the pipe part in the liquid feeding direction, a liquid moving part that can be switched to a counter liquid feeding mode for moving in the counter liquid feeding direction, and a pipe that is state information in the pipe part A method for controlling a medical pump having a tube state information detecting unit for detecting internal state information,
Based on the in-pipe state information, generate block information of the tube,
After the liquid moving unit is operated in the liquid feeding mode, the liquid moving unit is changed to the operation in the counter liquid feeding mode based on the blockage information,
A control method for a medical pump, characterized in that, based on the in-pipe state information, reaction liquid supply mode stop information that is stop information of the reaction liquid supply mode is generated.
At least a liquid feeding mode for moving the liquid contained in the pipe part in the liquid feeding direction, a liquid moving part that can be switched to a counter liquid feeding mode for moving in the counter liquid feeding direction, and a pipe that is state information in the pipe part To the medical pump having a tube state information detecting unit for detecting the state information,
Generating blockage information of the pipe part based on the state information in the pipe part;
The liquid moving unit is operated in the liquid feeding mode, and then changed to the operation in the counter liquid feeding mode based on the blockage information;
And a step of generating reaction liquid stop mode stop information, which is stop information of the reaction liquid supply mode, based on the in-pipe state information.