CN215274971U

CN215274971U - Detection device for redundant high-pressure injection system

Info

Publication number: CN215274971U
Application number: CN202023319996.2U
Authority: CN
Inventors: 张小元; 李燕
Original assignee: Nanjing Jusha Display Technology Co Ltd; Nanjing Jusha Medical Technology Co Ltd
Current assignee: Nanjing Jusha Display Technology Co Ltd; Nanjing Jusha Medical Technology Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-12-24
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a detection device for redundant high-pressure injection system relates to a detection device, including connecting in the liquid level monitoring device in the infusion pipeline outside, fixedly connected with drip kettle on the infusion pipeline, liquid level monitoring device is connected with the drip kettle. Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a detection device for redundant high-pressure injection system when solving traditional syringe and loading medicament and injection, whether the problem that can only be judged by the people to the greatest extent of the control of intravenous drip kettle liquid level and the bubble in the pipe has realized automatic monitoring intravenous drip kettle liquid level to and whether have two kinds of functions of bubble in the infusion pipe.

Description

Detection device for redundant high-pressure injection system

Technical Field

The utility model relates to a detection device specifically is a detection device for redundant high-pressure injection system.

Background

In many medical diagnostic and therapeutic procedures, a doctor or other personnel injects a contrast medium into a patient, and assists the doctor's diagnosis in conjunction with Computed Tomography (CT), Digital Subtraction Angiography (DSA), and magnetic resonance system (MR) imaging. The contrast agent reaches the detection site through a vein or artery, and an image of a desired tissue site is obtained by absorbing X-rays or changing the signal intensity of the tissue in the body under magnetic resonance, and the resulting image can be displayed on a monitor and recorded.

Most hospitals currently use high pressure injection systems to inject contrast media into patients, requiring the loading of the medication and monitoring of the iv drip chamber fluid level, which is done by a human. After the medicine is loaded and the air is exhausted, whether air bubbles exist in the infusion catheter or not is also observed through human eyes. All the components are handed to people to do so, so that the subjective factor is strong, and the bubbles in the infusion catheter cannot be observed in real time in the injection process, thereby bringing potential safety hazards.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a detection device for redundant high-pressure injection system to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a detection device for redundant high-pressure injection system, is including connecting the liquid level monitoring device in the infusion pipeline outside, fixedly connected with drip kettle on the infusion pipeline, liquid level monitoring device is connected with drip kettle.

As a further aspect of the present invention: the liquid level monitoring device comprises a fixed base, a liquid level sensor for detecting the liquid level of the drip cup is connected to the fixed base, and the drip cup is movably clamped with the fixed base.

As a further aspect of the present invention: the rear side of the fixed base is connected with a rear shell through a sealing gasket.

As a further aspect of the present invention: the fixed base is connected with a warning lamp through a lamp plate.

As a further aspect of the present invention: and the infusion pipeline is also fixedly connected with a bubble sensor.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a detection device for redundant high-pressure injection system when solving traditional syringe and loading medicament and injection, whether the problem that can only be judged by the people to the greatest extent of the control of intravenous drip kettle liquid level and the bubble in the pipe has realized automatic monitoring intravenous drip kettle liquid level to and whether have two kinds of functions of bubble in the infusion pipe.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the liquid level monitoring device of the present invention;

FIG. 3 is a schematic diagram of a waveform of ultrasonic waves passing through a pipeline normally in the present invention;

FIG. 4 is a schematic diagram of a waveform that ultrasonic waves pass through when the liquid level in the pipeline is lower than the sensor in the present invention;

FIG. 5 is a schematic view of a waveform that ultrasonic waves pass through when bubbles are mixed in the middle pipeline of the present invention;

FIG. 6 is a schematic diagram of the ultrasonic wave passing through the pipeline when there is no liquid in the pipeline of the present invention;

FIG. 7 is a schematic diagram of the ultrasonic wave passing through the pipeline when there is liquid in the pipeline of the present invention;

FIG. 8 is a schematic view of the liquid level detection process of the middle venous drip cup of the present invention;

fig. 9 is a flow chart of the detection of the bubble sensor in the present invention;

in the figure: the automatic liquid level control device comprises a 1-multichannel electric control valve, a 2-bubble sensor, a 3-guide pipe, a 4-infusion bag, a 5-liquid level monitoring device, a 6-syringe protective cover, a 7-bracket, an 8-injection device, a 9-manual control switch, a 10-fluid control auxiliary device, a 20-rear shell, a 21-sealing gasket, a 22-lamp panel, a 23-warning lamp, a 24-liquid level sensor, a 25-fixed base and a 26-drip cup.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

The first embodiment is as follows: as shown in fig. 1, the overall schematic diagram of the present invention includes: a needle cylinder, a bracket 7, an injection device 8, a manual control switch 9 and a fluid control auxiliary device 10 are arranged in a multi-channel electric control valve 1, a bubble sensor 2, a conduit 3, an infusion bag 4, a liquid level monitoring device 5 and a needle cylinder protective cover 6.

The syringe in the syringe protective cover 6 is connected with the multi-channel electric control valve 1 through a guide pipe and is respectively connected with the infusion bag 4 and the patient not shown in the figure through the multi-channel electric control valve 1. The bubble sensor 2 and the liquid level monitoring module 5 are mounted on a fluid control aid 10, the sensors inside being indirectly connected to the injection device 8 via the fluid control aid.

The explosion diagram of the liquid level monitoring module is shown in fig. 2. Comprises the following steps: rear shell 20, sealed pad 21, lamp plate 22, warning light 23, level sensor 24, fixed baseplate 25, drip kettle 26.

The bubble sensor 2 has an ultrasonic sensor. The ultrasonic sensor 2 is a sensor developed by utilizing the characteristics of ultrasonic waves. Ultrasonic energy propagates in solids such as air, water, liquids, and metals. The acoustic impedances of ultrasonic waves in different propagation media are different, and the same ultrasonic sensor cannot be generally used for different media. For example, the acoustic impedance ratios of air to water and steel are 1:3.4x103, 1:1x105, respectively, which differ greatly in acoustic impedance. By utilizing the characteristic of ultrasonic waves, a medical sensor for detecting air bubbles in a liquid pipeline can be designed.

Under the normal condition that air bubbles are not mixed, the liquid density is relatively stable, ultrasonic waves are smoothly transmitted to a receiving end in the liquid, and signals are hardly distorted greatly. If the liquid level is lower than the detection surface of the sensor, the density of the liquid in the ultrasonic wave propagation path is reduced, the received signal energy is attenuated, and the reflected waveform is rapidly reduced in amplitude along with the reduction of the liquid level. If bubbles with different sizes exist in the flowing liquid, the density of the liquid is reduced, the ultrasonic waves are scattered by the air bubbles on the propagation path, compared with the normal situation, the energy received by the receiving end is attenuated, the signal waveform is distorted, the amplitude is reduced, and the attenuation degree and the attenuation time are related to the size, the shape and the size of the bubbles.

Referring to fig. 3 to 5, the waveforms are the waveforms when the ultrasonic waves normally pass through the pipe, the waveforms when the liquid level in the pipe is lower than the sensor, and the waveforms when the bubbles are mixed in the pipe. The receiving end can judge the condition in the pipeline according to the waveform amplitude.

According to the characteristics of the ultrasonic sensor, it can be used for detecting the level of the intravenous infusion. In addition, the detection of the intravenous infusion liquid level is also photoelectric, and the principle is shown in figures 6-7. When no liquid exists in the pipeline, the emitted light beam can reach a receiving end after being refracted; when there is liquid in the pipe, the emitted light beam cannot reach the receiving end. Thus, the intensity of the light at the receiving end reflects the presence or absence of the liquid in the tube.

Example two: this embodiment is further described as the previous embodiment: after the introduction of the sensor, the following describes the implementation of the detection of the venous transfusion liquid level and the air bubbles in the high-pressure injection system.

After the high-pressure injection system is started, the bubble sensor and the venous transfusion liquid level detection sensor are in working states. When the injection device 8 is operated to load the medicine, the syringe is connected with the infusion bag through the multi-channel electric control valve, and the connecting channel of the syringe and the catheter 3 is closed. When the intravenous infusion liquid level detection sensor detects that the liquid level is too low, whether the loading of the medicine is finished or not is judged, if yes, no operation is carried out, otherwise, the medicine loading is stopped, and a warning lamp flashes to remind a user to replace the infusion bag. The process flow of the intravenous drip bottle liquid level detection is shown in figure 8.

After the medicament has been loaded, venting is required or the injection cannot be initiated to ensure safety, this task being accomplished by the bubble sensor. The bubble sensor always detects whether there is a bubble in the duct. After the exhaust is finished, the manual control switch is pressed to start the injection, the needle cylinder is connected with the catheter 3 through the multi-channel electric control valve, and the connecting channel of the needle cylinder and the infusion bag is closed. During the injection, the injection is terminated if the bubble sensor detects a bubble, and otherwise until the end.

Fig. 9 is a flowchart showing detection by the bubble sensor.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a detection device for redundant high pressure injection system, is including connecting in the liquid level monitoring device (5) in the infusion pipeline outside, its characterized in that, fixedly connected with drip kettle (26) on the infusion pipeline, liquid level monitoring device (5) are connected with drip kettle (26).

2. The detection device for redundant high-pressure injection systems according to claim 1, wherein the liquid level monitoring device (5) comprises a fixed base (25), a liquid level sensor (24) for detecting the liquid level of the drip cup (26) is connected to the fixed base (25), and the drip cup (26) is movably clamped with the fixed base (25).

3. Detection device for redundant high pressure injection systems according to claim 2, characterized in that the rear side of the fixed base (25) is connected with a rear housing (20) by means of a gasket (21).

4. Detection apparatus for redundant high pressure injection system according to claim 3, characterized in that, be connected with warning light (23) through lamp plate (22) on fixed base (25).

5. Detection device for redundant high-pressure injection systems according to any one of claims 1 to 4, characterized in that a bubble sensor (2) is also fixedly connected to the infusion line.