CN115445028A - An automatic injection adjustment system - Google Patents

Abstract

The invention provides an automatic injection adjustment system, comprising: a panel; a first micro-injection pump and a second micro-injection pump installed on the panel to inject and output liquid driven by a motor; a liquid storage device installed on the panel , used to store the liquid required for injection; the first flow sensor and the second flow sensor are installed on the panel to detect the flow of the liquid; the first pressure sensor and the second pressure sensor are installed on the panel to detect The pressure of the liquid; the first air bubble sensor and the second air bubble sensor are installed on the panel to detect the bubble content of the liquid; the first flow regulating valve and the second flow regulating valve are installed on the panel to adjust the real-time flow of the liquid Flow rate; power control panel, installed on the panel, used to observe the parameters fed back by each sensor, and send a correction signal in time; the first liquid output pipeline and the second output pipeline, fixed by sensors, are used to output liquid ; The first injection area, the second injection area, the liquid injection area of the receptor.

Description

An automatic injection adjustment system

technical field

The invention relates to the technical field of medical devices, in particular to an automatic injection adjustment system.

Background technique

With the increasingly stringent requirements for precise drug delivery in clinical medicine, microfluidic chips, drug/nutrition research, microdialysis, reactor dosing, bioreactors, cell injection, electrospinning, mass spectrometry, etc., traditional injection methods have become increasingly strict. Can not meet people's needs, resulting in a higher precision micro-injection pump.

However, the output of the common micro-injection pump is only a fixed value given by the computer, and there is no measurement of the output value. For example, in "A Micro-injection Pump" 202010339772.3, the screw nut is only driven by the motor , driving the syringe to inject a certain medicament, and using an ultrasonic transducer to measure the output of the liquid, the accuracy is not high.

For the existing micro-injection pumps, the flow rate and stable accuracy are an important factor affecting the quality of the injection pump, while the existing technology generally focuses on improving the minimum feed distance of the motor of the injection pump, through the new micro-stepping motor and control software to provide the lowest flow rate. Not only ignores the change of the friction coefficient between the feed liquid and the cavity, and the friction between the plunger and the cavity from static friction to dynamic friction, that is, the plunger and the liquid at the moment from static to dynamic The friction between the cavities will change, leading to problems such as overshoot and overshoot in the injection, which will affect the feeding accuracy of the plunger; and the factor of whether there are bubbles in the liquid entering the syringe is ignored.

Based on the problems existing in the existing miniature syringe pumps above, an automatic injection adjustment system has been invented.

Contents of the invention

The purpose of the present invention is to provide a precise medicament flow, flow velocity, bubble and pressure change, which can improve the accuracy of medicament intake.

In order to achieve the above object, the micro-injection pump in the present invention adopts the following technical scheme:

An automatic injection adjustment system, which consists of a panel; a flow sensor, a flow regulating valve, a pressure sensor and an air bubble sensor include a panel 10, the panel 10 is divided into two parts on the left and right, the left part is a power control panel, and the right part is a liquid storage device; The panel 10 is divided into two parts above and below, the upper part is the first automatic injection adjustment system, and the lower part is the second automatic injection adjustment system.

The layout of the first injection adjustment system is consistent with that of the second injection adjustment system, and the present invention only introduces the first injection adjustment system;

The first injection adjustment system includes a micro-injection pump 2, and the micro-injection pump 2 is driven by a DC motor 2014 to drive a screw 2016 to drive the moving baffle 2012 forward and backward, thereby driving the injection needle 2019 to inhale and output the medicine; the injection The fixed end of the needle tube 2019 is placed on the double-plate support 2011, and the front end is clamped and fixed with the clamp 2018; the movable end of the injection needle tube 2019 is fixed on the movable baffle 2012, and fixed with the miniature baffle 2017; the support column 2015 runs through the double-plate support 2011, the mobile baffle 2012 and is connected to the DC motor 2014 to play a supporting role; the base 2013 is used to fix the double-plate support 2011 and the DC motor 2014 to play a positioning support role;

The first micro-injection pump 201 is fixed on the panel 10 through the base 2013 with bolts.

The liquid in the liquid storage tank 102 is driven by the DC motor 2014 and then inhaled into the injection needle 2019 through the shunt of the Y-shaped tube 901 and the T-shaped tube 902. The injection needle 2019 drives the screw 2016 through the DC motor to make the injection needle 2019 The internal liquid T-shaped tube 902 flows out at a certain speed;

The liquid flowing out of the T-shaped tube 902 flows through the first flow sensor 301, the first blood pressure sensor 401, the first air bubble sensor 501 and the first flow regulating valve 601; the first flow sensor 301, the first blood pressure sensor 401, the first air bubble sensor 501 and the first flow regulating valve 601 are connected to the power control panel 7, and the flow rate, flow rate and bubbles of the liquid are judged through the power control panel 7, so as to achieve the control of the liquid in the first output pipeline 904, to meet the required requirements.

The first flow sensor 301 , the first blood pressure sensor 401 , the first air bubble sensor 501 and the first flow regulating valve 601 are respectively fixed on the panel 10 by bolts through the fixing slots.

The sensor part includes: flow sensor, flow regulating valve, pressure sensor, and air bubble sensor are set on the panel to detect the state of the liquid;

The liquid storage device includes: a box body and a protective cover, which are installed on the panel and used to store the required liquid;

Power control screen, installed on the panel, used to read parameters;

The installation structure is arranged on the panel, and is used for installing sensors, liquid storage devices, power control panels, and pipeline micro-injection pumps;

The micro injection pump includes: needle tube, needle tube fixing device, lead screw, base, support column and motor;

The fixed end of the needle tube is placed on the double-plate bracket of the needle tube fixing device, and is clamped with a clamp to prevent rotation. The double-plate bracket is fixed on the left end of the base; The plate clamps the moving end to ensure that the screw can move in real time with the moving end of the needle tube;

The left end of the screw is placed on the double-plate bracket, the right end is connected to the motor through the mounting plate, and the mounting plate is fixed on the right end of the base

The support column runs through the double-plate support and the mounting plate, and is used to support the overall structure.

Furthermore, in order for us to obtain the comparison of the parameters of each sensor more intuitively, a power control screen is set on the panel, and the parameters of the power control screen are adjusted to control the pressure and flow parameters of the liquid;

Further, in order to achieve different liquid velocity and flow conditions, two sets of such systems are set on the panel.

The beneficial effect of the above technical solution is that the original micro-injection pump is not enough to meet the conditions of direct injection into the human body. After the flow sensor, flow regulating valve, and pressure sensor are installed, the flow and pressure of the liquid are better controlled, which can achieve The standard for injecting into the human body; after setting the bubble sensor, the air bubbles in the liquid are well controlled, which can reach the standard for injecting into the human body; the automatic injection adjustment system set in this way can not only be used for automatic drug proportioning, but also can be used directly Inject the drug into the body.

Description of drawings

Fig. 1 is a structural representation of the present invention

Fig. 2 is the front view of the present invention

Fig. 3 is the left view of the present invention

Fig. 4 is the structure schematic diagram of micro-injection pump in the present invention

Figure 5 is a top view of the micro-injection pump in the present invention

Reference numerals in the figure: 1, liquid storage device; 101, protective cover; 102, liquid storage tank; 2, micro-injection pump; 201, first micro-injection pump; 2011, double-plate support; 2012, mobile baffle; 2013, base ; 2014, DC motor; 2015, supporting column; 2016, lead screw; 2017, micro baffle; 2018, clamping clip; 2019, injection needle tube; 3. Flow sensor; 301. First flow sensor; 302. Second flow sensor; 4. Blood pressure sensor; 401. First blood pressure sensor; 402. Second blood pressure sensor; 5 , air bubble sensor; 501, first air bubble sensor; 502, second air bubble sensor; 6, flow regulating valve; 601 first flow regulating valve; 602, second flow regulating valve; 7, power control screen; 8, injection area; 801. First injection area; 802. Second injection area; 9. Pipeline layout; 901. Y-shaped pipeline; 902. First T-shaped pipeline; 903. Second T-shaped pipeline; 904; First liquid Output pipeline; 905, second liquid output pipeline; 10, panel.

detailed description

The characteristics and performance of the present invention will be described in further detail below in conjunction with the examples.

Embodiment 1: As shown in Figure 1-5, an automatic injection adjustment system includes a panel 10, the panel 10 is divided into two parts on the left and right, the left part is a power control panel, and the right part is a liquid storage device; the panel 10 is divided into upper and lower parts It is divided into two parts, the upper part is the first automatic injection adjustment system, and the lower part is the second automatic injection adjustment system.

The layout of the first injection adjustment system is consistent with that of the second injection adjustment system, and the present invention only introduces the first injection adjustment system;

The first injection adjustment system includes a micro-injection pump 2, and the micro-injection pump 2 is driven by a DC motor 2014 to drive a screw 2016 to drive the moving baffle 2012 forward and backward, thereby driving the injection needle 2019 to inhale and output the medicine; the injection The fixed end of the needle tube 2019 is placed on the double-plate support 2011, and the front end is clamped and fixed with the clamp 2018; the movable end of the injection needle tube 2019 is fixed on the movable baffle 2012, and fixed with the miniature baffle 2017; the support column 2015 runs through the double-plate support 2011, the mobile baffle 2012 and is connected to the DC motor 2014 to play a supporting role; the base 2013 is used to fix the double-plate support 2011 and the DC motor 2014 to play a positioning support role;

The first micro-injection pump 201 is fixed on the panel 10 through the base 2013 with bolts.

The liquid in the liquid storage tank 102 is driven by the DC motor 2014 and then inhaled into the injection needle 2019 through the shunt of the Y-shaped tube 901 and the T-shaped tube 902. The injection needle 2019 drives the screw 2016 through the DC motor to make the injection needle 2019 The internal liquid T-shaped tube 902 flows out at a certain speed;

The liquid flowing out of the T-shaped tube 902 flows through the first flow sensor 301, the first blood pressure sensor 401, the first air bubble sensor 501 and the first flow regulating valve 601; the first flow sensor 301, the first blood pressure sensor 401, the first air bubble sensor 501 and the first flow regulating valve 601 are connected to the power control panel 7, and the flow rate, flow rate and bubbles of the liquid are judged through the power control panel 7, so as to achieve the control of the liquid in the first output pipeline 904, to meet the required requirements.

The first flow sensor 301 , the first blood pressure sensor 401 , the first air bubble sensor 501 and the first flow regulating valve 601 are respectively fixed on the panel 10 by bolts through the fixing slots.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. The scope of patent protection of the present invention is subject to the claims. Any equivalent structural changes made by using the description and accompanying drawings of the present invention, All should be included in the protection scope of the present invention in the same way.

Claims (5)

1. An automatic injection adjustment system, characterized in that: comprising: a panel; a flow sensor, a flow regulating valve, a pressure sensor and an air bubble sensor, used to control the instantaneous flow, flow velocity, pressure, and air bubbles of the liquid, and installed in a certain way In the fixed position of the panel, it is externally connected to the power control panel; the liquid storage device is installed in a fixed position of the panel for storage and protection of liquid; The power control panel is installed at a fixed position on the panel, connected with various sensors, and controls the flow, pressure, and air bubbles of the liquid through the feedback parameters; The micro-injection pump is installed at a fixed position on the panel. It is composed of injection injection, double-plate bracket, base, support column, screw and DC motor. The injection and output of the DC motor receive the signal from the power control panel, so as to achieve accurate control. 2. The automatic injection adjustment system according to claim 1, characterized in that the automatic injection adjustment system uses two identical adjustment systems. 3. The automatic injection adjustment system according to claim 1, characterized in that the traditional micro-injection pump can only achieve the preset parameters of the computer to inject and output the liquid, so that it needs to be reset when the parameters need to be changed. The required time cost is increased, so a power control panel is added to make parameter adjustment more convenient. 4. The automatic injection adjustment system according to claim 1, characterized in that the traditional micro-injection pump is not accurate in controlling the instantaneous flow, flow velocity, pressure and air bubbles of the output liquid, so a flow sensor, a flow sensor, and a flow sensor are added. Regulating valves, pressure sensors and air bubble sensors enable better control of the instantaneous flow, velocity, pressure and air bubbles of the liquid. 5. The automatic injection adjustment system according to claim 2, characterized in that two different liquid parameters can be output at the same time by using two sets of systems, and when two kinds of parameter output are required, the required time for work is reduced. time.

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