CN106964022B - Infusion monitoring device - Google Patents

Abstract

An infusion monitoring device belongs to the field of medical monitoring. Both sides of the infusion dropper are respectively provided with a beam emitter 1 and a photosensitive element array 2 above the liquid surface of the infusion dropper, and a turbidity and color difference detection module 3 is arranged below the liquid surface of the infusion dropper and on the same side as the photosensitive element array 2, so that The directional light emitted by the beam transmitter 1 can be received by the photosensitive element array 2 after being reflected by the liquid surface in the infusion dropper, and can be received by the turbidity and color difference detection module 3 after being refracted by the liquid surface in the infusion dropper; the photosensitive element array 2 detects the liquid droplet The liquid level height in the Suhe infusion dropper, and the turbidity and color difference detection module 3 judge the type and quality of the medicinal liquid. The present invention can carry out real-time remote monitoring on the dripping speed, type and quality of the medicinal liquid, calculate and upload the remaining time and the remaining amount of the medicinal liquid after infusion, and realize the remote control of the dripping speed. Security blocking.

Description

Infusion monitoring device

technical field

The invention relates to the field of medical monitoring, in particular to an infusion monitor.

Background technique

According to statistics from the China Safe Injection Alliance, 390,000 people die from unsafe injections every year in China. Infusion is a commonly used injection method, and its characteristics are: the process lasts for a long time, and in most cases, it does not need to be accompanied by medical staff, but medical staff must go to the hospital immediately for needle insertion, fluid replacement, and needle removal. Especially at the end, if the medical staff can't deal with it in time, the liquid medicine will run out, which will cause the patient's venous blood to return. If the gas entering the infusion catheter below the dropper is not noticed, it may be injected into the vein with the liquid medicine after changing the liquid, causing serious harm to the patient. Unnecessary pain and safety hazard. And in an emergency situation, such as earthquake relief, if the medical staff negligently leads to the wrong liquid medicine, or fails to find quality problems such as turbidity and discoloration of the liquid medicine, it will cause serious medical accidents and endanger the lives of patients. Therefore, it is of great significance for medical staff to control the patient's infusion progress in real time, to check the type of liquid medicine and to test the quality.

Medical staff need to patrol back and forth in the ward to observe the patient's infusion progress, adjust the drip rate, manually check the type of liquid medicine, and observe the quality of the liquid medicine. But in fact, in major hospitals, especially during the peak hours of visits, the medical staff are cumbersome and busy, and it is often difficult to find the patient in time when the drug solution is infused, and the patient or accompanying family members need to actively call. If the patient falls asleep and is unaccompanied, it will be difficult for the medical staff to notice after the liquid medicine is infused. Simultaneously, because the medical staff is difficult to predict the time when the controllable medicinal liquid will be transfused, the nursing work of the medical staff lacks planning and orderliness.

Contents of the invention

In order to solve the above problems, the present invention provides an infusion monitoring device, which monitors the patient's infusion drip rate, type of liquid medicine, and quality of liquid medicine, analyzes the remaining amount of liquid medicine and the remaining time after infusion, and transmits the information to the nurse through the wireless transmission module. The station terminal summarizes, receives the nurse station terminal command to control the drip rate of the infusion, and blocks the infusion line when the liquid medicine is infused to protect the safety of the patient.

Technical scheme of the present invention is:

The infusion monitoring device includes a support body, and the infusion tube including the dropper is fixed in the support body,

The two sides of the dropper of the infusion tube are respectively provided with a beam emitter 1 and a photosensitive element array 2 above the liquid surface of the dropper, so that the directional light emitted by the beam emitter 1 can be received by the photosensitive element array 2 after being reflected by the liquid surface in the dropper;

A turbidity and color difference detection module 3 is installed below the liquid surface of the dropper of the infusion tube and on the same side as the photosensitive element array 2, so that the directional light emitted by the beam emitter 1 can be detected by the turbidity and color difference detection module 3 after being refracted by the liquid surface in the dropper. take over;

The beam emitter 1, the photosensitive element array 2 and the turbidity color difference detection module 3 are connected to a computer;

The photosensitive element array 2 detects the fluctuation of the light spot and transmits the position data to the computer to calculate and record the drop speed of the medicine liquid and the liquid level height in the dropper of the infusion tube;

The turbidity and color difference detection module 3 detects the dispersion degree of the light spot and transmits the light color to the computer to calculate the correlation coefficient of turbidity and color difference and compare it with the medical solution data provided by the nurse station terminal to judge the type and quality of the medical solution.

Specifically, a chute and a motor 4 are also provided near the bottom of the support body near the infusion tube, and a movable pressure head 5 is arranged in the chute, and the motor 4 and the pressure head 5 are connected by a gear and a rack. The motor 4 Connected with the computer, the computer controls the motor 4 to drive the pressure head 5 to slide in the chute, squeeze the infusion catheter in different degrees, and control the dripping speed.

Specifically, an alarm module 8 is also provided on the surface of the support body, and the alarm module 8 is connected to a computer. Alarm when the liquid level is lower than the detection range.

Specifically, a button module 7 is provided on the surface of the support body, and the button module 7 is connected to a computer. The commands that can be input by the button module 7 include clearing, clearing the alarm and selecting the volume of the medicinal solution.

Specifically, a display module 6 is also provided on the surface of the support body, and the display module 6 is connected to a computer. Alarm information.

Specifically, a clamping device is provided on the back of the support body to clamp the infusion monitoring device on the infusion rod.

Specifically, the turbidity and color difference detection module 3 is a high-definition camera, and the photosensitive element is strip-shaped.

Specifically, the support body is also provided with a wireless transmission module, the wireless transmission module is connected to the computer and the nurse station terminal, and the computer uploads to the nurse station terminal through the wireless transmission module, including the working status, the dripping speed of the medicine, the amount of the remaining medicine, Expected completion time and patient call instruction information, and receive control instructions from the nurse station terminal to control the motor 4 to drive the pressure head 5 to control the dripping speed of the infusion, and block the infusion tube when the alarm module 8 alarms.

The beneficial effects of the present invention are: one incident ray can detect multiple sets of parameters such as drip speed, liquid level height, turbidity, color difference, and refractive index; It is flexible and convenient, and has a wider application range; the drop speed is detected by the change of the optical path caused by the fluctuation of the liquid surface. Compared with the through-beam infrared sensor for detecting liquid droplets, the allowable deviation is larger when the dropper is installed, and the photosensitive element array on the liquid surface 2 The turbidity and color difference detection module 3 at the lower part of the liquid surface can simultaneously detect fluctuations in the optical path with high reliability; the computer can calculate the liquid level height through the position of the reflected light measured by the photosensitive element array 2, which can be measured by the turbidity and color difference detection module 3 Comparing the parameters of the medicinal solution obtained with the database, initially identifying the type of medicinal solution, and judging the quality; under the control of the computer, the motor 4 can block the infusion line when the medicinal solution is exhausted or the type of medicinal solution is wrong, so as to protect the safety of the patient; The wireless module can realize the transmission of information such as the detected dripping speed and quality of the medicinal solution, the calculated remaining amount, the expected delivery time and other information, and receive the dripping speed control signal of the terminal, which is beneficial to the nurse station for all patients. Real-time mastery and control of infusion status, as well as formulating service routes to improve work efficiency.

Description of drawings

Fig. 1 is a schematic diagram of the structure and principle of the transfusion monitoring device described in the embodiment of the present invention;

Description of reference signs: 1-beam emitter, 2-photosensitive element array, 3-turbidity and color difference detection module, 4-motor, 5-indenter, 6-display module, 7-key module, 8-alarm module

Detailed ways

The present invention will be described in detail below in conjunction with illustrative examples. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form.

As shown in Figure 1, it is a structural diagram of an infusion monitoring device provided by the present invention, including a support body, the infusion tube is fixed in the support body, and beam emitters 1 are respectively arranged on both sides of the infusion tube above the liquid surface in the infusion dropper and the photosensitive element array 2, so that the light emitted by the beam emitter 1 can be received by the photosensitive element array 2 after being reflected by the liquid surface in the infusion dropper; There is a turbidity and color difference detection module 3, so that the light emitted by the beam emitter 1 can be received by the turbidity and color difference detection module 3 after being refracted by the liquid surface in the infusion dropper; the beam emitter 1 and the photosensitive element array 2 described in this embodiment And turbidity color difference detection module 3 is connected with single-chip microcomputer.

The bottom of the support body is also provided with a chute and a motor 4 near the place of the infusion tube. A movable pressure head 5 is arranged in the chute. The motor 4 and the pressure head 5 are connected by a gear and a rack, and the motor 4 is connected with the single-chip microcomputer. The single-chip microcomputer controls the motor 4 to drive the pressure head 5 to slide in the chute, squeezes the infusion catheter to different degrees, and controls the dripping speed.

The support body can be provided with a dropper detection slot, the size of which is based on the national standard for infusion sets. There are catheter grooves connecting the upper and lower ends of the dropper detection slot. The infusion monitoring device can be hung with the infusion set, and is suitable for many practical situations such as pole-type infusion stands and ceiling-suspended infusion hooks.

A clamping device is also provided on the back of the supporting body to clamp the infusion detection device on the infusion rod.

The beam emitter 1 emits a concentrated beam at a fixed angle, and the light is polychromatic light. Only when polychromatic light is used, the color difference sensor of the turbidity color difference detection module can detect different colors of the liquid.

The position of the liquid level in the infusion dropper is adjusted to an appropriate range by the medical staff by squeezing the dropper.

The photosensitive element array 2 can receive the reflected light reflected by the liquid surface in the dropper, record the dripping speed and liquid level height according to the spot fluctuation frequency and position detected by the photosensitive element, and transmit the recorded spot position to the single-chip microcomputer. When the position of the light spot fluctuates violently, it is judged that the droplet is dripping, and the dripping speed is calculated from this; when the position of the light spot recorded by the photosensitive element array does not change for a period of time, it is judged that the liquid medicine has been infused. At the beginning, the total amount of liquid medicine is obtained by manual setting or reading the patient's medical records, and the estimated infusion time can be calculated according to the dripping speed during the working process.

The turbidity and color difference detection module 3 can accept the refracted light refracted by the liquid surface in the dropper. It is essentially a special high-definition camera. The photosensitive element is strip-shaped. The traditional photosensitive element is round or rectangular, such as the As for the photosensitive chip, the photosensitive element of the present invention is strip-shaped, and the length is several times greater than the width. The single-chip microcomputer calculates the correlation coefficient of turbidity and color difference through the detected light spot dispersion degree and light color, and compares it with the drug solution data downloaded in advance by the wireless module to judge the type and quality of the drug solution. When the turbidity and color difference detection module 3 detects that the data is inconsistent with the normal data of the medical solution in the patient's medical record, it is judged that the type or quality of the medical solution is abnormal.

The display content of the display module 6 includes the current liquid medicine dripping speed, remaining liquid medicine volume, remaining time, control mode and alarm information.

The alarm module 8 alarms when the data collected by the turbidity and color difference detection module 3 does not match the terminal medical solution data and when the liquid level in the infusion dropper is lower than the detection range.

The single-chip microcomputer uploads to the nurse station terminal through the wireless transmission module, including the working status, liquid dripping speed, remaining liquid volume, expected completion time, and patient call instruction information, and receives the control command to control the motor 4 to drive the pressure head 5 to control the dripping speed of the infusion, and When the alarm module 8 reports to the police, the infusion tube is blocked. In addition, the single-chip microcomputer also accepts control commands from the remote control and the key module 7 in real time to realize functions such as manual control of dripping speed, parameter calibration and calling.

The button module 7 at least includes the following instructions: clearing instruction, that is, the clearing instruction input by the medical staff when the liquid is changed after the liquid medicine is transfused, and the counter data is cleared; the liquid volume selection instruction is manually input by the medical staff when the liquid is changed. volume; cancel the alarm command, you can manually cancel the alarm of the alarm module.

The calculation principle of the present invention is as follows:

Read the maximum and minimum coordinates of each light-sensing unit on the light-sensing element array at each sampling time.

Judging whether the liquid medicine is exhausted (or the pipeline is blocked): judge whether the coordinates are stable within a certain period of time (more than 2s); if it is stable, it means that the liquid level is still, the liquid medicine is exhausted or the pipeline is blocked, and an alarm is issued.

Judging the position of the liquid level: Find the mean value of the coordinates within a period of time (that is, a point on the reflected light path). Since each liquid level position must correspond to a unique reflected light path, the actual liquid level coordinates are mapped according to the mapping table obtained in advance experiments .

Judging the infusion speed and expected infusion time: When the coordinate exceeds a certain value determined by the experiment, it indicates that the liquid level fluctuates violently, and it is judged that the liquid drop is dripping, and the count value of the counter is n=n+1. The time interval between reading the counter + 1 twice is the time interval T(s) between two droplets falling, and the drop speed Q( mL/min)=V0*60/T. According to the total volume V set (which can be set remotely through the terminal or the monitor button), the expected delivery time can be obtained: t=V/Q(min).

Judging the type of medicinal solution: read the image obtained by the turbidity and color difference detection module 3 at the lower part of the liquid surface and send it to the terminal (nurse station computer). Comparing the two images of the obtained liquid medicine images, since different liquid medicines have different turbidity and color difference, it can be judged whether the medicine liquid actually used is consistent with the medicine liquid that should be used or whether it has deteriorated.

Claims (7)

1. The transfusion monitoring device comprises a supporting body, a transfusion tube containing a dropper is fixed in the supporting body,

the liquid level detector is characterized in that two sides of the infusion tube dropper are respectively provided with a light beam emitter (1) and a photosensitive element array (2) above the liquid level of the dropper, so that light rays directionally emitted by the light beam emitter (1) can be received by the photosensitive element array (2) after being reflected by the liquid level in the dropper; recording the dropping speed and the liquid level according to the fluctuation frequency and the position of the light spot detected by the photosensitive element array (2), and transmitting the recorded light spot position to the singlechip;

a turbidity and color difference detection module (3) is arranged below the liquid level of the drip tube of the infusion tube and on the same side with the photosensitive element array (2), so that the light rays directionally emitted by the light beam emitter (1) can be received by the turbidity and color difference detection module (3) after being refracted by the liquid level in the drip tube;

the light beam emitter (1), the photosensitive element array (2) and the turbidity and color difference detection module (3) are connected with a computer;

the turbidity and color difference detection module (3) detects the light spot dispersion degree and the light color, transmits the light color and the light color dispersion degree and the light color difference correlation coefficient to a computer to calculate turbidity and color difference correlation coefficient, compares the calculated turbidity and color difference correlation coefficient with liquid medicine data provided by a nurse station terminal, and judges the type and quality of the liquid medicine;

the infusion support is characterized in that a chute and a motor (4) are further arranged at the bottom of the support body, which is close to the infusion tube, a movable pressure head (5) is arranged in the chute, the motor (4) and the pressure head (5) are connected through a gear and a rack, the motor (4) is connected with a computer, the motor (4) is controlled by the computer to drive the pressure head (5) to slide in the chute, the infusion catheter is extruded to different degrees, and the dropping speed is controlled.

2. The infusion monitoring device according to claim 1, wherein an alarm module (8) is further arranged on the surface of the support body, the alarm module (8) is connected with a computer, and the alarm module (8) alarms when the data acquired by the turbidity and color difference detection module (3) are not matched with the terminal liquid medicine data and the liquid level in the infusion tube is lower than a detection range.

3. The infusion monitoring device according to claim 2, wherein the surface of the support body is further provided with a key module (7), the key module (7) is connected with a computer, and the instructions which can be input by the key module (7) comprise clearing, alarm releasing and liquid medicine volume selecting.

4. The infusion monitoring device according to claim 2, wherein a display module (6) is further arranged on the surface of the support body, the display module (6) is connected with a computer, and display content of the display module (6) comprises current medicine dripping speed, residual medicine amount, residual time, control mode and alarm information.

5. An infusion monitoring device according to claim 1, wherein the back of the support body is further provided with clamping means for clamping the infusion monitoring device to the infusion rod.

6. The infusion monitoring device according to claim 1, wherein the turbidity and chromatic aberration detection module (3) is a high-definition camera, and the photosensitive element is a strip.

7. The infusion monitoring device according to any one of claims 1 to 6, wherein a wireless transmission module is further arranged in the support body, the wireless transmission module is connected with the computer and the nurse station terminal, the computer uploads information including working states, liquid medicine dripping speed, residual liquid medicine amount, expected completion time and patient calling instructions to the nurse station terminal through the wireless transmission module, and the control instruction of the nurse station terminal is received to control the motor (4) to drive the pressure head (5) to control the liquid medicine dripping speed, and the infusion tube is blocked when the alarm module (8) alarms.

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