JP3316002B2 - Infusion volume monitoring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an infusion amount monitoring device provided in a system for infusing a liquid to be transported stored in a supply source, for example, a nutrient solution or a drug solution stored in an infusion bag as a supply source. The present invention relates to an infusion amount monitoring device suitable for a medical infusion system for injecting an infusion into a living body.

[0002]

2. Description of the Related Art For example, in the medical field, nutrient solutions,
In order to administer a parenteral liquid such as a drug solution or a saline solution into a living body, a medical infusion system for injecting such a liquid has been used. FIG. 7 shows an example of the infusion system 5, which includes an infusion bag 6 for storing nutrient solution and the like, and an infusion pump 10 for infusion of nutrient solution and the like. As this infusion pump 10, as disclosed in Japanese Patent Publication No. 61-55,393, a peristaltic finger type infusion pump is known, and a front surface of a main body 11 is connected to a drip bag or the like. The tube mounting part 12 to which the flexible tube 18 is mounted is provided. This tube mounting part 12
Is provided with a pump unit 13 for moving the liquid passing through the tube 18, and a door 14 facing the pump unit 13 is attached to be openable and closable. In addition, a back plate 19 that presses the tube 18 along the direction toward the pump unit 13 is provided on the door inner surface 14 a facing the pump unit 13. A spring is provided between the back plate 19 and the door inner surface 14a to urge the back plate 19 toward the pump portion 13 to resiliently press the back plate 19.

The pump unit 13 of the infusion pump 10 is driven by a stepping motor or the like. By controlling the rotation speed of this motor, the flow rate per unit time (for example, one hour) can be set within a predetermined range. It has become. Also, since the amount of infusion per rotation of the motor drive shaft is known in advance, by counting the number of rotations of the motor drive shaft, the integrated amount of infusion after starting the infusion is calculated. . Further, the infusion pump 10
Also has the function of setting the planned infusion volume.

In calculating the integrated amount of infusion, the following method is also employed. That is, as shown in FIG. 7, a drop detection sensor 8 for detecting a drop of a drug solution or the like falling from the infusion bag 6 is provided on a drip probe 7 connecting the lower end of the infusion bag 6 and one end of the tube 18. There is also an infusion pump in which the infused amount is integrated based on the number of drops and the known number of drops per predetermined volume. The droplet detection sensor 8 is constituted by an optical sensor.

[0005] The infusion pump 10 of this kind of medical infusion system 5 incorporates an infusion amount monitoring device for indicating that the infusion has been completed. When the infusion integrated amount calculated by counting, or the infusion integrated amount calculated by counting the number of drops of the drug solution, etc., matches the preset infusion scheduled amount, the lamp is turned on or a buzzer sounds. This indicates that the infusion has been completed.

[0006] Further, in the infusion pump which counts the number of drops of the drug solution or the like to calculate the integrated amount of the infusion solution, even if the infusion pump does not have a function of setting the estimated infusion amount, the drop detection sensor 8 detects the drug solution or the like. If the infusion is not detected even after the elapse of a predetermined time, it can be determined that the infusion has been completed because the medicinal solution or the like stored in the infusion bag 6 has run out. Therefore, in the infusion system having such an infusion pump, when the drop detection sensor 8 does not detect the dropping of the drug solution or the like for a predetermined time, the infusion volume monitoring indicating that the infusion is completed by turning on a lamp or the like. It is also contemplated to provide a device.

[0007]

As described above, the conventional infusion amount monitoring device incorporated in the infusion system 5 has only the function of indicating that the infusion is completed, and the remaining time required for the completion of the infusion. And no indication of the time at which the infusion is to be completed.

Although the conventional infusion amount monitoring device has a function of indicating completion of infusion, when an infusion completion alarm is suddenly displayed, a busy nurse must immediately come in and work. Was inconvenient in deciding the work schedule. Also, in hospitals that monitor more than one patient at a time, the end times of infusions are often the same for multiple patients,
There was a risk that the work of nurses would be more complicated.

In order to know the time required to complete the infusion at the time of starting the infusion, an operator such as a nurse or the patient who receives the infusion divides the estimated infusion amount by the infusion flow rate. The estimation is performed based on the dropping speed or based on the degree of decrease of the drug solution in the infusion bag 6. On the other hand, in order to know the remaining time required for the completion of the infusion when the infusion is continued for a predetermined period of time, the nurse or the patient first calculates the remaining amount of the infusion by subtracting the integrated amount of the infusion from the planned amount of the infusion, and then The remaining time had to be calculated by dividing the remaining amount by the infusion flow rate.

Further, the infusion flow rate may be changed during the infusion operation depending on the condition of the patient. To know the remaining time required for the completion of the infusion at the time when the flow rate is changed, the same as described above is used. First, the remaining amount of infusion must be calculated by subtracting the total amount of infusion from the estimated infusion amount, and then dividing the remaining amount of infusion by the new infusion flow rate to calculate the remaining time. On the other hand, in order to know the remaining time required for the completion of infusion at a point in time after changing the infusion flow rate, it is necessary to accurately understand the relationship between the infusion flow rate and the time during which the infusion pump was operating at that flow rate. It was impossible to calculate the remaining time.

As described above, the conventional infusion amount monitoring device provided in the infusion system 5 cannot easily confirm in real time the remaining time required for the completion of the infusion and the scheduled time for the completion of the infusion. It was inconvenient for the patient to go to the toilet or go for a walk while receiving the infusion. Also, for workers such as nurses,
It is inconvenient when performing a preliminary operation or the like for preparing the needle removal process or the like by predicting the end of the infusion operation. Furthermore, since the medical infusion system 5 is operated for a relatively long time, and nurses often change work during the operation of the infusion system 5, the remaining time and the like are displayed in real time. In the infusion amount monitoring device that cannot be obtained, there is a problem that the operation of communicating the transfer items cannot be performed easily and smoothly.

The present invention has been made to improve the above-mentioned problems associated with the conventional infusion amount monitoring device.
To provide an infusion volume monitoring device capable of indicating in real time the remaining time required for infusion completion, the scheduled time of infusion completion, etc.
Accordingly, an object of the present invention is to achieve the simplification and efficiency of a series of operations accompanying the infusion operation.

[0013]

According to a first aspect of the present invention, there is provided an infusion amount monitoring apparatus provided in a system for infusing a liquid to be transported stored in a supply source. Scheduled volume setting means for setting a scheduled volume to be set; flow rate setting means for setting an infusion flow rate per unit time; and infusion means for infusing the transported liquid according to the infusion flow rate set by the flow rate setting means. An infusion amount integrating means for integrating the infused liquid amount, a scheduled amount set by the scheduled amount setting means, an infusion flow rate set by the flow rate setting means, and an infusion integrated amount integrated by the infusion amount integrating means And a control means for calculating the remaining time until the completion of the infusion, and displaying the remaining time or the infusion completion time based on the calculation result on the calculation result display unit. If the remaining time that brute becomes the predetermined time, shows a preliminary alarm on the calculation result display unit, further, before
The control means is based on the infusion flow rate changed and input during the infusion.
And calculate the remaining time to complete the infusion
Calculates the remaining time or infusion completion time based on the calculation result
An infusion amount monitoring device characterized by being shown on a result display unit . The invention according to claim 2 is an infusion amount monitoring device provided in a system for infusing a liquid to be transported stored in a supply source, wherein a scheduled amount setting means for setting a scheduled amount to be infused, and a unit. Flow rate setting means for setting the infusion flow rate per hour, and the scheduled volume set by the scheduled volume setting means,
Control means for calculating the remaining time until infusion is completed based on the infusion flow rate set by the flow rate setting means and indicating the remaining time or infusion completion time based on the calculation result on a calculation result display section. and, wherein, when the remaining time based on the operation result becomes a predetermined time, shows a preliminary alarm on the calculation result display unit, further, wherein,
The infusion is changed based on the infusion flow rate that was changed during the infusion.
Calculate the remaining time to complete and calculate
An infusion amount monitoring device characterized in that a remaining time or an infusion completion time is displayed on a calculation result display section . Claims
3. The invention according to claim 3 , wherein the calculation result display section is connected to a nurse call system.
Or an infusion amount monitoring device according to claim 2.

[0014]

The liquid to be transported stored in the supply source is infused at a flow rate corresponding to the infusion flow rate set by the flow rate setting means. The control means of the infusion amount monitoring device calculates the infusion remaining amount by subtracting the infusion integrated amount integrated by the transport liquid amount integrating means from the scheduled amount set by the scheduled amount setting means, and sets the infusion remaining amount to the flow rate setting. By dividing by the infusion flow rate set by the means, the remaining time required until the infused amount reaches the planned amount, that is, the infusion is completed is calculated. And
The control means displays a predetermined display such as a remaining time and a time at which the infusion is completed on the calculation result display section based on the calculation result of the remaining time. Therefore, the worker or the like can grasp in real time the remaining time required from the present time to the completion of the infusion.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1A is a schematic configuration diagram showing one embodiment of a medical infusion system having an infusion amount monitoring device according to the present invention, and FIG. 2 is incorporated in an infusion pump as infusion means shown in FIG. FIG. 7 is a cross-sectional view illustrating a pump unit, in which members common to the members illustrated in FIG. 6 are denoted by the same reference numerals, and a description thereof is partially omitted.

The medical infusion system 40 shown in FIG.
It is used when injecting a chemical solution into a living body or performing automatic infusion, etc., and is an infusion bag 6 as a supply source for storing the transported liquid, and an infusion pump as an infusion means for injecting the transported liquid. 41.

The infusion bag 6 is filled with a predetermined amount of a parenteral liquid (corresponding to a liquid to be transported) such as a nutrient solution, a drug solution, or a saline solution, and is hooked on a stand (not shown). I have. One end of a flexible tube 18 is connected to a lower end of the infusion bag 6 via a drip probe 7. The drip probe 7 has an infusion bag 6
Droplet detection sensor 8 for detecting a drop of a chemical solution or the like falling from the surface
Is provided. The droplet detection sensor 8 includes an optical sensor 42
The light sensor 42 includes a light-emitting element (for example, an infrared LED) 42a and a light-receiving element (for example, a phototransistor) 42b, and is provided so that light from the light-emitting element 42a is blocked by a drop. . As the drug solution falls from the infusion bag 6, the light emitting element 42a
The light from the light-receiving element 42b outputs, for example, an off signal when receiving the light from the light-emitting element 42a, and sets a predetermined threshold when the light is blocked by the drop. Outputs an ON signal less than the hold value. By counting this ON signal, the number of drops of the chemical solution or the like is detected. Also, the drip tube 7 is 1 cc for 15 drops, 1 cc for 19 drops, 1 cc for 60 drops,
The number of drops per unit volume (for example, 1 cc) is predetermined. Therefore, the number of drops of the chemical solution or the like, that is, the light receiving element 42
By counting the ON signal from b and dividing this by the number of drops per unit volume, the integrated amount of infusion can be calculated. In addition, when the drop of the drug solution or the like is not detected even after the lapse of a predetermined time, that is, when the ON signal from the light receiving element 42b is not detected during the predetermined time, it is determined that the drug solution or the like stored in the infusion bag 6 has run out. can do.

There are various types of infusion pumps 41. For example, a peristalic finger type infusion pump is known. This kind of infusion pump 41 is shown in FIG.
In the same manner as described above, a tube mounting section 12 to which a flexible tube 18 connected to the drip bag 6 or the like is mounted is provided on the front surface of the main body section 11. The tube mounting section 12 is provided with a pump section 13 for moving the liquid passing through the tube 18, and a door 14 facing the pump section 13 is attached to be openable and closable. As shown in FIG. 2, the door inner surface 1 facing the pump unit 13 is also provided.
4 a is provided with a back plate 19 for pressing the tube 18 in a direction toward the pump unit 13.
Between the back plate 19 and the door inner surface 14a,
A spring 20 for urging an elastic force for pressing the back plate 19 toward the pump portion 13 is attached.

As shown in FIG.
A plurality (for example, six) of fingers 25 movable forward and backward with respect to the mounted tube 18;
5 that slidably holds the casing 5. The casing 26 is composed of a pair of casing members 27 which are abutted with each other.
A holding groove 28 for slidably holding each finger 25 is formed in a shelf shape. In the casing 26, a support shaft 29 is rotatably mounted via a bearing 30, and a plurality of (for example, six) eccentric cams 31 are shifted on the support shaft 29 by a predetermined angle. Is fixed.
The support shaft 29 has a D-shaped cross section in order to prevent a positional displacement between the support shaft 29 and a timing pulley 60 described later due to rotation. The finger 25 has a substantially plate shape, and a cam hole 32 with which the eccentric cam 31 slides.
Are formed. The portion of the support shaft 29 fitted to the eccentric cam 31 may have an ordinary circular cross section other than the D-shaped cross section. As shown in FIG. 3, one end of the support shaft 29 protruding from the casing 26 is connected to a rotation drive unit including a timing pulley 60, a timing belt 61, and a motor (not shown).

Then, the rotation driving means is operated to rotate the support shaft 2.
When the eccentric cam 9 is driven to rotate, each of the eccentric cams 31 fixed to the support shaft 29 with the phase shifted is rotated while sliding on the inner peripheral surface of the cam hole 32 of the corresponding finger 25. As a result of this cam action, each finger 25 is moved
8, the finger 25 starts moving forward sequentially from the top, and moves to the forward limit.
The tube 18 is pressed in between to close the flow path of the tube 18. The finger 25 that has moved to the forward limit is
As the support shaft 29 further rotates, it moves toward the backward limit, and the blockage is released. In this way, by repeating the operation of sequentially moving from the finger 25 located above to the forward limit, the point of closing the tube 18, that is, the closing point 18 a sequentially moves downward along the longitudinal direction of the tube 18, The liquid in 18 is infused from the suction side to the discharge side.

As is well known, the stepping motor can control the rotation speed of the motor drive shaft by controlling the pulse frequency of the pulse applied to the motor drive circuit. Therefore, the pump unit 13 controls the frequency of the pulse given to the stepping motor,
The infusion flow rate per unit time is set within a predetermined range.

The transport liquid amount integrating means 45 for integrating the amount of liquid infused by the infusion pump 41 includes a timing pulley 6 connected to the support shaft 29 as shown in FIGS.
0 and an optical sensor 48. Timing pulley 60
Is an encoder 47 in which one slit 47a is formed. As shown in FIG. 4, the optical sensor 48 includes a light emitting element (for example, an infrared LED) 48a and a light receiving element (for example, a phototransistor) 48b, and is provided so that light from the light emitting element 48a passes through the slit 47a. ing. As described above, by forming the conventional encoder unit provided separately from the pulley integrally with the timing pulley 60, the outer dimensions of the infusion pump 41 can be reduced. Further, the center hole 60a of the pulley 60 into which the support shaft 29 is inserted is formed in a D-shape.
By making a a non-circular, no displacement (slip) occurs between the pulley 60 and the support shaft 29, and the rotation speed of the support shaft 29 can be accurately detected by the encoder 47. It should be noted that the present invention does not hinder a pump having an encoder of another component. In addition, the shape and the like of the encoder are not limited to these.

The drive of the motor is transmitted to the timing belt 61, the timing pulley 60, and the support shaft 29. When the encoder 47 rotates together with the timing pulley 60, light from the light emitting element 47a is blocked or passes through the slit 47a. The light receiving element 48b outputs, for example, an ON signal when receiving the light from the light emitting element 48a, and outputs an OFF signal when the light is blocked. By counting the ON signal, the number of rotations of the support shaft 29 is detected.
The infusion amount per rotation of the support shaft 29 is known in advance. Therefore, the rotation speed of the support shaft 29, that is, the light receiving element 48b
Is counted, and this signal is multiplied by the amount of infusion per rotation of the support shaft 29 to calculate the integrated amount of infusion. As described above, since the integrated amount of infusion can be calculated based on the number of drops detected by the droplet detection sensor 8, the transport liquid amount integration means 45 may be configured by the droplet detection sensor 8.

As shown in FIG. 1 (A), a start switch 50 for instructing the start of infusion and an infusion schedule as a scheduled volume setting means for setting a scheduled volume for infusion are provided on the front surface of the main body 11 of the infusion pump 41. A volume setting switch 51 and a flow rate setting switch 52 as flow rate setting means for setting an infusion flow rate per unit time (for example, one hour) are provided. When the flow rate setting switch 52 is operated, a pulse having a pulse frequency corresponding to the set flow rate is given to the motor drive circuit, and the rotation speed of the motor drive shaft is controlled. The main unit 11 also includes a planned amount display unit 53 that displays the set planned amount, a flow rate display unit 54 that displays the set infusion flow rate, and an integrated amount display unit 55 that displays the calculated integrated amount of infusion. It is provided on the front.

The infusion amount monitoring device of this embodiment is an infusion pump 4
The remaining amount of infusion is calculated by subtracting the total amount of infusion from the estimated infusion and calculating the remaining amount of infusion by the currently set infusion flow rate. Is calculated. Further, a scheduled time at which the infusion is to be completed is calculated from the calculated remaining time and the current time. A time display section (corresponding to a calculation result display section) 56 is provided on the front surface of the main body section 11 to indicate a predetermined display such as a remaining time or a scheduled time based on the calculation result. A remaining time display mode for displaying the remaining time on the time display unit 56, a scheduled time display mode for displaying the estimated infusion completion time,
Alternatively, a clock mode or the like for displaying the current time can be selected, and a display mode selection dial 57 for setting these modes is provided on the front surface of the main body 11.

The infusion amount monitoring device calculates whether the integrated infusion amount matches the planned infusion amount, as in the prior art. A completion alert is shown on the time display 56. This infusion amount monitoring device also calculates whether the remaining time is less than a predetermined time (for example, 5 minutes). If the remaining time is less than 5 minutes, it is determined that the infusion is to be completed soon, and the calculation result is displayed. A preliminary alarm based on the time is displayed on the time display unit 56. Further, the infusion amount monitoring device determines whether or not the drug solution or the like stored in the infusion bag 6 has run out based on the signal from the droplet detection sensor 8, and when the ON signal is not detected during the predetermined time. , The remaining amount alarm is displayed on the time display section 56. In addition to determining that the liquid medicine or the like has run out, the liquid level in the infusion bag 6 may be monitored to determine whether the remaining amount is equal to or less than a predetermined remaining amount.

Each of the display sections 53 to 56 is preferably constituted by an LED display having seven segments. Further, the time display unit 56 only needs to be able to recognize the remaining time and the alarm, so that a plurality of LEDs may be arranged in a row and a predetermined display may be indicated by turning on, off, or blinking the LEDs. Further, as shown in FIG.
Means that the LEDs 62 are respectively arranged under "1 hour", "30 minutes", and "5 minutes", and if the remaining time is 1 hour to 30 minutes, only the left LED 62 is turned on. ,
If the remaining time is 30 minutes to 5 minutes, only the central LED 62 is turned on. If the remaining time is 5 minutes or less, the right LED 6 is turned on.
The remaining time may be indicated by lighting only 2. In addition, a buzzer may be provided in the time display section to indicate an infusion completion alarm or the like, and various alarms may be identified by making the buzzer sound an intermittent sound or a continuous sound. Further, the display units 53 to 56 and the buzzer may be connected to a so-called nurse call system, and a predetermined display based on the calculation result may be displayed at the nurse center.

FIG. 5 is a block diagram showing a processing circuit for calculating the remaining time, the scheduled infusion completion time, and the like in the infusion amount monitoring device. The start switch 50, the infusion scheduled volume setting switch 51, and the flow rate setting switch 52 are C
It is connected to PU60. Further, the droplet detection sensor 8 is also connected to the CPU 60, and a signal that detects the dropping of the chemical solution is output as C.
The data is input to the PU 60. Also, CPU
A stepping motor M for driving the pump unit 13 is connected to 60, and a control signal for controlling the rotation speed of the motor M is sent from the CPU 60. The optical sensor 48 provided on the encoder 47 of the flange portion of the timing pulley 60 is also connected to the CPU 60, and a signal that detects the rotation of the support shaft 29 that rotates with the driving of the motor is input to the CPU 60. In the CPU 60, the amount of the infused liquid is integrated, and the remaining time until the infusion is completed and the scheduled time at which the infusion is completed are calculated. In the CPU 60,
Scheduled amount display unit 53, flow rate display unit 54, integrated amount display unit 55
Is connected, and a control signal for displaying the set scheduled amount, the infusion flow rate, and the calculated infusion integrated amount is transmitted from the CPU 60. A time display unit 56 is connected to the CPU 60, and control signals for indicating the calculated remaining time, the estimated infusion completion time, and various warnings are transmitted to the CPU 60.
It is sent from. Further, a timer 61 and a storage unit 62 are connected to the CPU 60.
The storage means 62 stores the set infusion scheduled amount and infusion flow rate, the infusion start time, the relational expression between the rotation speed of the motor drive shaft or the support shaft 29 and the infusion volume, and the like.

Next, the operation of the infusion amount monitoring device will be described with reference to the flowchart shown in FIG.

When the program starts, various variables are initialized, and in steps S1 and S2, the setting of the planned infusion Q by the planned infusion set switch 51 and the setting of the infusion flow V by the flow setting switch 52 are performed. In addition, the estimated infusion Q and the infusion flow V are stored in the storage means 62.
Is stored. Further, the set scheduled amount Q and the infusion flow rate V
Are displayed on the scheduled amount display section 53 and the flow rate display section 54, respectively. The setting of the infusion flow rate V by the flow rate setting switch 52 is interrupted and can be changed even during the operation of the infusion pump 41. In step S3, whether the infusion flow rate V is changed by operating the flow rate setting switch 52 is determined. Judge.

When the start switch 50 is operated to instruct the start of infusion, a pulse having a pulse frequency corresponding to the set infusion flow rate V is given to the motor drive circuit in step S4, and the rotation speed of the motor drive shaft 56 is increased. Is controlled to start infusion at a desired infusion flow rate. At this time, the pulse frequency for the set infusion flow rate V is determined from a relational expression or the like stored in the storage means 62.

In step S5, based on the planned infusion amount Q, the infusion flow rate V, and the integrated infusion amount i, which is rewritten as needed and stored in the storage means 62, the remaining time required from the current time to the completion of the infusion is stored. Time is calculated. The remaining time t required from the present time to the completion of the infusion can be obtained by the following equation: remaining time t = remaining infusion / currently set infusion flow rate = (planned infusion volume Q−integrated infusion volume i) / infusion volume V. At the time of the start, since the infusion integrated amount i = 0, the remaining time t can be obtained by the estimated infusion amount Q / infusion flow amount V. For example, scheduled infusion volume Q = 2000 ml,
If the infusion flow rate is 60 ml / h, the remaining time t = approximately 33.
3h is calculated. Further, the estimated time at which the infusion is to be completed is calculated based on the remaining time t and the current time.

In step S6, the result calculated in step 5 is displayed according to the set display mode. That is, when the display mode is the remaining time display mode, the remaining time is displayed on the time display unit 56 as ““ 33 ”hours:“ 18 ”minutes”. In the case of the scheduled time display mode, the scheduled time at which the infusion is completed is displayed. Since the infusion time is relatively long, the remaining time and the like may be displayed in increments of 1 minute, for example, in increments of 5 minutes, in increments of 10 minutes, or in increments of 15 minutes. Assuming that the time is displayed in increments of 15 minutes, in the above example, ““ 33 ”hours:“ 15 ”
Minutes ". Alternatively, instead of displaying numbers, by turning on, off, or blinking the LED,
A predetermined display may be shown on the time display unit 56.

In step S7, the total number of infusions i is calculated by counting the number of rotations of the support shaft 29 or the number of drops of the drug solution or the like, and the total number of infusions i is stored in the storage means 62. Is stored. Further, the calculated infusion integrated amount i is displayed on the integrated amount display section 55.

In step S8, it is determined whether or not the remaining time t calculated in step S5 is 5 minutes or less. If not, the process returns to step S3 and repeats the above processing.
For example, the planned infusion volume Q = 2000 ml and the infusion volume is 60
Infusion at a predetermined time at ml / h, integrated amount of infusion i = 100 ml
, The remaining time t is calculated to be about 31.7 h, and the remaining time is displayed on the time display section 56 as “31” hours: ”.
42 "minutes".

As described above, when the infusion is continued while the remaining time is displayed in real time, in step S3,
If it is determined that the flow setting switch 52 has been operated to change the infusion flow rate V, the process proceeds to step S9. In step S9, based on the new infusion flow rate V ', the remaining time required from the time when the flow rate is changed to the time when the infusion is completed is calculated. The remaining time t at this time is: remaining time t = infusion remaining amount / newly set infusion flow amount = (planned infusion amount Q−integrated infusion amount i) / new infusion flow amount V
´. Then, after the new infusion flow rate V 'is rewritten and stored in the storage means 62, the process proceeds to step S6, where a predetermined display is shown on the time display section 56. Thus, with this infusion amount monitoring device, even when the infusion flow rate is changed,
The remaining time required to complete the infusion is immediately displayed.

If the infusion is continued and it is determined in step S8 that the remaining time t is less than a predetermined time, for example, less than 5 minutes, it is determined in step S10 whether the infusion is completed.
That is, it is determined whether or not the infusion integrated amount i has reached the preset infusion scheduled amount Q. If it is determined that the infusion has not been completed, a preliminary alarm is issued only once in step 11.
This preliminary alarm is performed by displaying a predetermined display on the time display unit 56, lighting a lamp provided on the time display unit 56, or activating a buzzer provided on the time display unit 56 to emit a buzzer sound. Is shown to others.

Then, in step S10, the integrated amount of infusion i
Determines that the infusion has reached the scheduled infusion volume Q and the infusion is completed, an infusion completion alarm is issued in step 12. The infusion completion alarm is also indicated to the worker or the like by displaying a predetermined display on the time display unit 56, turning on a lamp, or emitting a buzzer sound, similarly to the above-mentioned preliminary alarm.

If the drug solution or the like stored in the infusion bag 6 runs out during the infusion work, or if the amount of the drug solution becomes less than a predetermined remaining amount, a remaining amount alarm is displayed on the time display section 56 and the infusion bag 6 is displayed.
Replacement work is required of workers and the like. In addition, each display unit 5
If the 3-56 or buzzer is connected to the nurse call system, various information and alarms associated with the infusion work can be grasped collectively at the nurse center, so that the nurse does not need to look around a plurality of infusion systems 40 in advance. .

As described above, according to the infusion amount monitoring apparatus of the present embodiment, in addition to the function of indicating that the infusion is completed, the remaining time required for the completion of the infusion and the estimated time of completion of the infusion are indicated. Since it has a function and a function to give a preliminary warning, for example, 5 minutes before the completion of the infusion, a worker such as a nurse or the patient who receives the infusion can change the infusion flow rate during the infusion. In addition, the remaining time until the completion of the infusion and the estimated time of the completion of the infusion can be visually confirmed at any time in real time. For this reason, the patient can go to the toilet or go for a walk while receiving the infusion while constantly grasping how long the infusion is to be completed, so that the infusion system 40 is convenient. In addition, even for a worker such as a nurse, the remaining time can be easily grasped even when the infusion flow rate is changed, so that a preliminary operation for predicting the end of the infusion work and preparing for needle removal processing can be easily performed. become. Further, even when the nurse changes work while the medical infusion system 40 is operating, the remaining time and the like are displayed in real time, so that the work to be transferred at the time of work change is communicated. Can be performed easily and smoothly. Thus, according to the infusion amount monitoring device of the present embodiment,
Since the remaining time required for the completion of the infusion can be indicated in real time, a series of operations accompanying the infusion can be performed easily and efficiently.

Although the infusion amount monitoring device provided in the medical infusion system 40 is shown, the present invention is not limited to this infusion system 40, and infuses the liquid to be transported stored in the supply source. It goes without saying that it can be applied to any system.

[0042]

According to the infusion amount monitoring apparatus according to the first or second aspect, the remaining time required for the completion of the infusion, the scheduled time for the completion of the infusion, and the like are displayed on the calculation result display section. Can grasp in real time the remaining time required from the present time to the completion of the infusion, and through this, a series of operations associated with the infusion work can be simplified and made more efficient. Effect. Further, since a function is provided for indicating a preliminary alarm a predetermined time before the completion of the infusion, a series of operations associated with the infusion work can be facilitated and efficient through this function. Further , even when the infusion flow rate is changed during the infusion, the worker or the like can grasp the remaining time required from the present time to the completion of the infusion in real time. According to the infusion amount monitoring device of the third aspect , in addition to the effects of the first and second aspects, various information and alarms associated with the infusion operation can be collectively grasped at the nurse center. This has the effect of eliminating the need for women to look around a plurality of infusion systems in advance.

[Brief description of the drawings]

FIG. 1A is a schematic configuration diagram illustrating an embodiment of a medical infusion system having an infusion amount monitoring device according to the present invention, and FIG. 1B is another example of a time display unit. Diagram shown

FIG. 2 is a cross-sectional view showing a pump unit incorporated in the infusion pump as the infusion means shown in FIG.

FIG. 3 is a perspective view showing a main part of the pump unit shown in FIG. 2;

FIG. 4 is a perspective view showing an example of a transport liquid amount integrating means 45 shown in FIG.

FIG. 5 is a block diagram showing a processing circuit according to the embodiment;

FIG. 6 is a flowchart showing an operation procedure of the infusion amount monitoring device.

FIG. 7 is a schematic configuration diagram showing an example of a medical infusion system.

[Explanation of symbols]

6: Infusion bag (supply source) 8: Droplet detection sensor 40: Medical infusion system 41: Infusion pump (infusion means) 45: Infusion amount integrating means 51: Scheduled infusion set switch (estimated amount setting means) 52: Flow rate setting switch (flow rate setting means) 56 ... Time display section (calculation result display section) 60 ... CPU
(Control means)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A61M 5/00 330 G01F 15/06 G08B 21/00

Claims (3)

(57) [Claims] An infusion amount monitoring device provided in a system for infusing a liquid to be transported stored in a supply source, comprising: a scheduled amount setting means for setting a scheduled amount to be infused; and an infusion rate per unit time. A flow rate setting means for setting, an infusion amount integrating means for integrating the amount of liquid infused by the infusion means for injecting the liquid to be transported according to the infusion flow rate set by the flow rate setting means, Based on the estimated amount, the infusion flow rate set by the flow rate setting means, and the infusion integrated amount integrated by the infusion amount integration means, the remaining time until infusion is completed is calculated, and the calculation result is calculated. Control means for displaying the remaining time or the infusion completion time based on the calculation result on the calculation result display unit. The control means, when the remaining time based on the calculation result becomes a predetermined time, issues a preliminary alarm to the calculation result table. Shows in section, further, the control means has been changed input half infusion imports
Calculates remaining time to complete infusion based on fluid flow
And the remaining time or the completion of infusion based on the calculation results
An infusion amount monitoring device, wherein the time is indicated on a calculation result display section . 2. An infusion amount monitoring device provided in a system for infusing a liquid to be transported stored in a supply source, comprising: a scheduled volume setting means for setting a scheduled volume to be infused; Based on the flow rate setting means to be set, the scheduled amount set by the scheduled volume setting means, and the infusion flow rate set by the flow rate setting means, the remaining time until infusion is completed is calculated, and Control means for displaying the remaining time or the infusion completion time based on the calculation result on the calculation result display unit, wherein the control means displays a preliminary alarm on the calculation result display unit when the remaining time based on the calculation result becomes a predetermined time. and, further, the control means has been changed input half infusion imports
Based on the liquid flow rate, calculating the remaining time to complete the transportation liquid
And the remaining time or the completion of infusion based on the calculation results
An infusion amount monitoring device, wherein the time is indicated on a calculation result display section . 3. A nurse call system according to claim 1, wherein
The infusion amount monitoring device according to claim 1 or 2, wherein the device is connected to a system.