JPS61119277A - Transfusion method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (1) Industrial application field The present invention relates to an infusion system.

It is well known that infusion systems are widely used in the medical field. Preoperative and postoperative management, emergency use for saline replenishment, electrolyte adjustment, and nutritional infusion replenishment, as well as inotropes, diuretics, antihypertensives, vasopressors, antiarrhythmia agents, labor accelerators, and bronchodilators. Numerous drug solutions, such as local anesthetics or antibiotics, are widely used.

In recent years, in particular, there has been a growing trend toward disease-specific treatment, and infusion management has become more important than ever for reasons such as labor-saving to reduce treatment costs.

(2) Conventional technology Normally, in an infusion system, for / large patients,
Multiple types of medicinal solutions are often used during seven treatments. For example, antibiotics and vasodilators are used in conjunction with postoperative patients.

In this case, the former and latter drug solutions are often infused sequentially. In conventional infusion systems, it is common for seven types of drug solutions to be used in seven infusion pumps. Therefore, in the above example, two infusion pumps are prepared for two types of drug solutions, and they are switched manually one by one. This is often done.

Alternatively, one can use one infusion pump and replace the infusion bags, etc. The latter method requires only seven infusion pumps, but it requires a lot of effort to replace, so it is not practiced in practice. The former method is easier than the latter method, but requires one infusion pump. In any case, there are many kinds [yu]. □&M71CIm
□6o94, ya. , 1 cost, and the number of infusion pumps increases.

In addition, the present applicant has already applied for the present invention and the same section since the Showa era. The patent application has been filed on October 30, 2017.

(3) Problems to be solved by the invention The conventional concept of using 7 infusion pumps for 7 types of medicinal solutions is not correct, but in the case of an infusion system that sequentially infuses many medicinal solutions, the number of infusion pumps becomes large, and sometimes/largely. per patient≠~! The infusion pump must be installed at the bedside, which is not only economically expensive, but also takes up a lot of space and reduces bedside work efficiency. In addition, the infusion tube becomes complicated and the operability of the infusion system becomes significantly worse.

From this perspective, if it were possible to create a system that sequentially infuses several types of drug solutions using a single infusion pump, the infusion system would be greatly improved, reducing costs and improving workability and operability. System efficiency is achieved.

The present invention improves the conventional problems of such infusion systems,
The purpose is to improve efficiency.

(4) Means for Solving the Problems The present inventors have made extensive studies and have arrived at the present invention. That is, an infusion tube having a plurality of branch lines having a confluence point upstream of an infusion pump is connected to an infusion bag containing a drug solution, the infusion tube is layered on the infusion pump, and a solenoid is connected to each of the branch lines. It has been found that by installing a clamp and operating the tube/id clamp, it is possible to selectively and sequentially infuse drug solutions.

Various types of infusion pumps can be used as infusion pumps, but
In order to achieve the present invention, it is necessary to sequentially switch the medicinal solution and simultaneously switch the infusion rate of the medicinal solution. Usually, the infusion rate of a drug solution differs depending on the drug solution, but in some cases, the infusion rate is the same. Hereinafter, the infusion rate will be explained as being switched. Furthermore, to simplify the explanation, drug solution A was prepared using seven infusion pumps.

An infusion system for infusing B will be described.

The infusion tube has a confluence point upstream of the infusion pump and has two branch lines, one of which is used as a branch line for the drug solution A1, and the other one is used as the branch line for the drug solution B. Chemical solutions A and B are connected to the branch line.

It is stored in an infusion bag.

The infusion shall be performed in the order of drug solution B, followed by drug solution A.

A solenoid clamp is installed on each of the two branch lines, and chemical solutions A and B are selectively and sequentially caused to flow into the branch line by opening and closing the solenoid clamps.

The solenoid clamp may be operated manually or automatically, but automatic operation is preferable in order to save labor.

When switching manually, open and close the solenoid clamp using a separately prepared switch to switch between chemical solutions A and H.
At the same time as selecting one of these, the infusion rate of the infusion pump may be sequentially switched to the desired value.

Several methods are possible for automatic switching.

First, a dripping detector is installed before (or after) the solenoid clamp using electrical, optical, or ultrasonic means, and the dripping detection signal is used to detect the dripping of the chemical solution on the chemical solution B side. The solenoid clamp on the drug solution A side is switched from "open" to "closed," and the solenoid clamp on the drug solution A side is switched from "closed" to "open," and the branch line for infusion is switched from drug solution B to drug solution A.

At the same time, the infusion rate of the infusion pump is also switched from a desired value for drug solution B to a desired value for drug solution A based on the liquid cutoff detection signal. However, the solenoid clamp on the chemical solution B side does not need to be switched by leaving it "open" unless there is any particular problem.

The second method is to switch the speed of the drip liquid from the desired value of chemical solution B to the desired value of chemical solution A using a separately prepared timer. The timer may be placed separately or may be built into the infusion pump.

Of course, the infusion rates for each of the drug solutions A and B are set in advance using the infusion pump.

A drain detector can also be used as an alarm or annunciator.

(5) Effect The purpose of the present invention is to connect an infusion tube having a plurality of branch lines to a plurality of drug solution bags containing different drug solutions, to attach the infusion tube to an infusion pump, and to attach a solenoid clamp to each of the branch lines. As is clear from the foregoing description, the purpose of the present invention is to provide an infusion system that selectively and sequentially infuses medicinal solutions by opening and closing the solenoid clamp in accordance with a signal from a liquid cutoff detector or a timer.

In the switching method using a liquid cut-off detector, the liquid cut-off detector is installed upstream of the solenoid clamp, and the liquid cut-off signal from the liquid cut-off detector quickly opens and closes the solenoid clamp, and at the same time switches the infusion rate. However, if it is desired to prevent the chemical solution from remaining in the branch line, the liquid cutoff detector may be installed downstream of the solenoid clamp, that is, closer to the confluence of the branch lines.

In the switching method using a timer, using the above example, the solenoid clamp must be activated in time with the timing when the infusion of drug solution B ends and the switch is switched to drug solution A, and at the same time, the infusion rate must be switched from drug solution B to drug solution A. Therefore, it is preferable that the amount of drug solution B is made to closely match the infusion time (calculated value) determined from the infusion amount (set value) of drug solution B and the infusion rate (set value) and the switching time set by the timer.

If the solenoid clamp installed on the branch line for chemical solution A malfunctions and leaks while infusing drug solution B, it is natural that drug solution A will flow mixed with drug solution B, which is undesirable. It is preferable that the liquid cut-off detector installed in the branch line A is capable of detecting not only liquid cut-off but also liquid flow, since this enables leakage detection.

For example, both a drip leak and a liquid flow on the downstream side of the infusion bag can be detected.

Note that the infusion bag is an infusion container in a broad sense, and it goes without saying that it may be made of plastic, resin, or glass.

(6) Example In the following examples, three types of medicinal solutions A, B, and C will be infused in the order of medicinal solution C, medicinal solution B, and medicinal solution A.

Fig. 1 shows an infusion system using a switching method using a liquid cutoff detector according to the present invention, Fig. 2 shows an infusion system using a switching method using a timer, and Fig. 3 shows a drip system that can also detect liquid cutoff and liquid flow. This is an infusion system that combines a chamber and a liquid cutoff detector.

A detailed explanation will be given below according to the drawings. (Common parts are indicated by the same numbers.) The first switching method using the liquid cutoff detector will be explained.

First, the solenoid clamps 7 and /2 installed on the branch lines J and I of the infusion tube 2 are "closed", while the solenoid clamp 1 installed on the branch line /3
7 is "open", and the drug solution C (l] not shown) stored in the infusion bag lμ is sent to the infusion pump/ via the branch line /3, and the infusion rate is set in advance 1.
``'''' Infusion 8 - Medicinal solution 0') When the infusion is completed, the liquid cut-off detector /j detects the liquid cut-off and issues a liquid cut-off signal. In response to the liquid cutoff signal, the solenoid clamp 17 is switched from "open" to "closed" and the solenoid clamp /2 is switched from "open" to "closed".
switches from "closed" to "open". At the same time, the infusion pump / switches from the infusion rate of drug solution C to the infusion rate of drug solution B in response to the liquid cutoff signal. At this time, the strain/id clamp 7 is "closed"
It's Noma\. As a result, the flow of the drug solution is switched from the drug solution C to the drug solution B, and the infusion rate is also switched from the drug solution C to the drug solution B.

Switching from chemical solution B to chemical solution A is performed in the same manner. That is, when the infusion of the drug solution B contained in the infusion bag and getter is completed, the liquid cut-off detector 10 detects the liquid cut-off and issues a liquid cut-off signal.

In response to the off signal, solenoid clamp/2 changes from "open" to "closed" and solenoid clamp 7 changes from "closed" to "closed".
The flow of the chemical liquid is switched from chemical liquid B to chemical liquid A.

At the same time, the infusion pump 1 changes the infusion rate from the drug solution B to the drug solution A by the liquid cutoff signal.

FIG. 2 shows a switching method using a timer. Figure 1 is a liquid cut-off detector! , 10. /! They are different in that they are fleeting.

That is, a separately prepared timer (not shown) causes the solenoid clamp 7. At the same time as /λ and /7 are sequentially switched, the infusion rate of the infusion pump / is sequentially switched. The procedure for switching is the same as in the case of FIG.

It is usually preferable to incorporate the timer into the infusion pump because it is simple. Further, the timer is not limited to an independent one, but also includes an infusion time calculated from the total volume of annular fluid and the infusion rate.・Figure 3 shows the liquid cutoff detector in the branch tube shown in Figure 1, and the chamber 1. ．． //.

/It was installed in Party B. In this case, the drip chamber can be used to detect the liquid level and simply detect liquid outage, but it is possible to detect the dripping state of the drip chamber and detect not only liquid outage but also liquid flow. Since it can detect cuts and liquid leaks, it can also be used for bag binding signals, so it has a wide range of applications.

To further explain one example in detail, the dripping state of the liquid is taken as the dripping time interval, and the solenoid clamps 7, 12... /
If 7 is "open" and the dripping time interval is longer than a certain predetermined time, it indicates liquid shortage. Also, if the solenoid clamps 7, /J, /7 are "closed" and dripping at a certain predetermined time interval is detected, it indicates a fluid leak. Alternatively, if the dripping time interval is detected and the infusion pump It can also be used for feedback control by comparing the infusion rate preset with l.Solenoid clamp 7°/2./7 switching and infusion pump/
The switching of the infusion rate is the same as in FIGS. 1 and 2.

Although the preferred embodiments of the present invention have been described above, it goes without saying that various applications can be made without departing from the spirit of the present invention.

(7) Effects of the present invention According to the present invention, several types of medicinal solutions are mixed in a predetermined order.
Seven infusion pumps can be used to sequentially infuse a predetermined amount of infusion at a predetermined infusion rate.

Switching of the drug solution and infusion rate may be done manually or automatically. In a conventional infusion system that uses seven infusion pumps to infuse one type of drug solution, the number of infusion pumps is inevitably large, resulting in high costs. Furthermore, the installation space for the infusion pump becomes large, resulting in poor workability. The infusion tube is also crowded and complicated, making it difficult to operate. However, by employing the infusion system according to the present invention, these conventional problems can be solved all at once.

Furthermore, if the drug solution and infusion rate are automatically switched, all you have to do is attach the infusion tube at the start of the infusion, and the infusion pump will automatically infuse the infusion afterwards, which will save you a lot of time and effort, which is extremely beneficial in terms of infusion management. Efficient. In particular, the more types of medicinal solutions that are sequentially used for seven treatments/larger patients, the more
It can be said that the infusion system according to the present invention is highly effective.

[Brief explanation of drawings]

FIG. 1 shows an infusion system according to the present invention using a switching method using a liquid cut-off detector, FIG. 2 shows an infusion system using a timer-based switching method, and FIG. 3 shows an infusion system capable of detecting liquid cut-off and liquid flow. 1 shows an infusion system that combines a drop chamber and a wave-cut detector. / ・・・・・・・・・・・・・・・・・・・・・・・・
・Infusion pump-・・・・・・・・・・・・・・・・・・
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, /J ・・・・・・・・・Infusion tube branch line μ, ri, /μ・・・・・・Infusion bag! , 10.
/j...Liquid cutoff detector B, //, /4...
...Tori, Buchanba 7, /2. /7...
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Claims (3)

[Claims] (1) Connect an infusion tube that has multiple infusion tube branch lines (hereinafter referred to as branch lines) with a confluence point upstream of the infusion pump to the infusion bag containing the drug solution, and connect the infusion tube to the infusion tube. 1. An infusion method characterized by installing a solenoid clamp on each of the branch lines and operating the solenoid clamp to selectively and sequentially infuse a medicinal solution. (2) A liquid cutoff detector is provided in each of the plurality of branch lines, and a detection signal from the liquid cutoff detector activates a solenoid clamp to switch the branch line to which the liquid is infused, and at the same time, switches the infusion rate of the infusion pump. An infusion method according to claim (1), characterized in that: (3) The infusion method according to claim (1), characterized in that the infusion rate of the infusion pump is switched at the same time as the branch line for infusion is switched in response to a signal from a timer.