CN213789316U

CN213789316U - Closed-loop feedback infusion pump

Info

Publication number: CN213789316U
Application number: CN202022040469.1U
Authority: CN
Inventors: 李志云
Original assignee: Fengyi Shanghai Medical Technology Co ltd
Current assignee: Fengyi Shanghai Medical Technology Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-07-27
Anticipated expiration: 2030-09-17

Abstract

The utility model discloses a closed loop feedback transfer pump, including weighing sensor, heater, flow detector, bubble detector, blocking detector, central controller, motor driver, step motor, stripper plate, wriggling device, power supply unit, USB interface, UART interface, alarm unit, display, keyboard and other relevant mechanical transmission. The utility model discloses add weighing sensor, the reduction volume of liquid medicine in the accurate measurement infusion process feeds back to central controller to control peristaltic device can realize ration, constant speed, regular infusion closed-loop control, reaches high accuracy infusion effect, can realize that the liquid medicine has infused back system automatic stop, avoids the air admission patient vein, produces the risk. The heater realizes the control to the liquid medicine temperature, can carry out the liquid medicine heating of invariable temperature when infusing in winter, promotes the comfort level of patient's infusion. And an external power supply or a built-in battery is adopted, so that the use requirements of different scenes are met, and the application range is wider.

Description

Closed-loop feedback infusion pump

Technical Field

The utility model relates to a closed loop feedback transfer pump.

Background

At present, the infusion pump used in the market only adopts one-way control. After the infusion apparatus and the infusion pump are installed, parameters such as set infusion speed, preset infusion amount and the like are input according to medical orders, the microcomputer system controls the pump device to carry out infusion work, and the monitoring device and the alarm device play roles in supervision, feedback and alarm prompting in the infusion process. The quantitative control of the liquid medicine in the infusion process of the infusion pump only depends on a flow detector or a pressure detector to monitor the flow rate or the pressure of the liquid medicine in an infusion pipeline, and then the flow rate or the pressure is fed back to a microcomputer system to be processed into data such as input quantity and the like, and the pump device is adjusted and controlled according to the data. In the control mode, the input amount or the residual amount and other numerical values of the liquid medicine are calculated to obtain numerical values, the residual amount of the liquid medicine in the infusion bag cannot be directly monitored in real time and accurately, and accurate timing quantitative infusion control is difficult to achieve. Meanwhile, at the stage of ending the infusion, medical care personnel need to pay close attention to the infusion, so that the risk caused by the fact that air enters the veins of patients is avoided, and the workload of the medical care personnel is increased.

Meanwhile, when the temperature is low, the infusion is carried out, special liquid medicine with temperature requirements is required, or the physique of a patient is special, if the liquid medicine needs to be heated, a liquid medicine heating device needs to be additionally arranged, so that the complexity of equipment and the workload of medical staff are increased.

In addition, the infusion pump is generally only powered by external power supply alternating current, and cannot be used in special scenes such as high-speed rescue, patient transfer and the like, so that the use requirements of different scenes cannot be met, and the application range is limited.

Disclosure of Invention

An object of the utility model is to provide a closed loop feedback transfer pump 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 closed loop feedback transfer pump, including central controller, central controller is supplied power by power supply unit, central controller is connected with the alarm, display and keyboard, central controller is equipped with UART interface and USB interface, be equipped with the heater on the transfer line of infusion bag below, flow detector, bubble detector and blocking detector, the heater, flow detector, bubble detector and blocking detector all are connected with central controller, central controller still is connected with motor drive, motor drive is connected with the progress motor, the progress motor is connected with the peristaltic device, the transfer line is arranged in between peristaltic device and the stripper plate, weighing sensor below is arranged in to infusion bag, weighing sensor links to each other with central controller.

The utility model discloses a further improvement lies in: the power supply device is an external power supply.

The utility model discloses a further improvement lies in: the power supply device is a built-in power supply.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses increased weighing sensor in the liquid medicine upper end, the reduction volume of liquid medicine in the accurate measurement infusion process feeds back to central controller in real time, again by central processing unit regulation control wriggling device, through the velocity of flow or the drip speed of wriggling speed regulation liquid medicine, can realize real-time ration, constant speed, the closed loop control of regularly infusing, reach high accuracy infusion effect, can realize simultaneously that the liquid medicine infusion finishes the back system automatic shutdown, avoid the air admission patient vein to produce the risk.

The utility model discloses heating module can be joined in marriage to optional, through setting up heating temperature, realizes the control to the liquid medicine temperature, can carry out the liquid medicine heating of constant temperature when infusing in winter to reach the best treatment of liquid medicine, and promote the comfort level of patient's infusion.

And simultaneously, the utility model discloses an external power supply or two kinds of power supply modes of built-in battery can satisfy the user demand of different scenes, and application scope is more extensive.

Drawings

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

reference numbers in the figures: the device comprises a central controller 1, an alarm unit 2, a display 3, a keyboard 4, a UART interface 5, a USB interface 6, a power supply 7, a weighing sensor 8, a heating module 9, a flow detector 10, a bubble detector 11, an occlusion detector 12, a stepping motor 13, a motor driver 14, a squeezing plate 15, a peristaltic device 16, an infusion bag 17 and an infusion tube 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment provides a technical scheme: a closed-loop feedback infusion pump comprises a central controller 1, wherein the central controller 1 is powered by a power supply device 7, and the power supply device 7 is an external power supply or an internal power supply.

The central controller 1 is connected with an alarm 2, a display 3 and a keyboard 4, the central controller 1 is provided with a UART interface 5 and a USB interface 6, a heater 9, a flow detector 10, a bubble detector 11 and a blockage detector 12 are arranged on a transfusion tube 18 below an infusion bag 17, the heater 9, the flow detector 10, the bubble detector 11 and the blockage detector 12 are all connected with the central controller 1, the central controller 1 is further connected with a motor driver 14, the motor driver 14 is connected with a progress motor 13, the progress motor 13 is connected with a peristaltic device 16, the transfusion tube 18 is arranged between the peristaltic device 16 and a squeezing plate 15, the infusion bag 17 is arranged below a weighing sensor 8, and the weighing sensor 8 is connected with the central controller 1.

The central controller 1 mainly functions to control the peripheral devices by a protocol. The central controller 1 is connected with a power supply device 7, and the power supply device 7 provides direct current or alternating current power supply for equipment. The central controller 1 is connected with an alarm unit 2, and the alarm unit 2 provides an alarm signal when a problem occurs in the infusion process. The central controller 1 is connected with the display 3, the keyboard 4, the UART interface 5 and the USB interface 6, and the display 3, the keyboard 4, the UART interface 5 and the USB interface 6 provide functions of data display, data input, data output and the like. The central controller 1 is connected with a weighing sensor 8, and the weighing sensor 8 converts the residual weight of the liquid medicine into an electric signal and transmits the electric signal to the central processor 1. The central controller 1 is connected with a heating module 9, and the heating module 9 heats the liquid medicine after receiving the electric signal of the central controller 1. The central controller 1 is connected with a flow detector 10, and the flow detector 10 monitors the flow rate of the liquid medicine when the liquid medicine passes through and feeds the flow rate back to the central controller 1. The central controller 1 is connected with a bubble detector 11, and the bubble detector 11 monitors whether bubbles exist in the infusion tube 18 and feeds back the bubbles to the central controller 1. The central controller 1 is connected to an occlusion detector 12, and the occlusion detector 12 monitors whether the infusate line 18 is occluded and feeds back to the central controller 1. The central controller 1 is connected with a motor driver 14, and the motor driver 14 receives the electric signal output by the central controller 1 and converts the electric signal into current. The motor driver 14 is connected with the stepping motor 13, and the stepping motor 13 receives the current output by the motor driver 14 and converts the current into angular displacement. The stepping motor 13 is connected with a peristaltic device 16, the opposite side of the peristaltic device 16 is provided with an extrusion plate 15, and the peristaltic device 16 is driven by the stepping motor 13 to creep.

When the infusion pump is used, the infusion bag 17 is hung on a hook below the weighing sensor 8, the disposable infusion device for the infusion pump is connected to the infusion bag 17, the infusion tube 18 is arranged in a pipeline groove between the peristaltic device 16 and the extrusion plate 15 after air is exhausted, and the pump door is closed. The keyboard 4 is used for setting the infusion speed, the infusion total amount and the infusion time, the models of the infusion bag and the infusion apparatus are selected, and the central controller 1 calculates the net weight of the liquid medicine according to the data collected by the weighing sensor 8. The lower end of the infusion apparatus is connected with the venous passage of the patient, the manual switch of the infusion apparatus is released, the start key is pressed, and the system starts infusion. After the transfusion is finished, the system automatically stops or presses a stop key.

The main working principle is as follows: the keyboard 4 is used for inputting and setting the infusion speed, the infusion total amount, the infusion time and the models of the infusion bag and the infusion apparatus, and the central controller 1 calculates the initial net weight of the liquid medicine according to the initial total weight data collected by the weighing sensor 8. In the infusion process, the weighing sensor 8 measures the real-time total weight in real time and feeds the real-time total weight back to the central controller 1, the central controller 1 calculates the infused total weight according to the initial total weight and the real-time total weight, and the central controller 1 calculates the residual total weight according to the infusion bag 17, the infusion apparatus model and the real-time total weight. The data obtained by the retransmission sensor 8 corrects the data obtained by monitoring the flow detector 10. The central controller 1 adjusts the electric signal sent to the motor driver 14 in real time according to the correction result, the motor driver 14 adjusts the output current according to the electric signal, the stepping motor 13 adjusts the rotating speed according to the received current, the peristaltic speed change of the peristaltic device 16 is realized, and the real-time adjustment of the infusion speed is realized, so that the set infusion amount, the infusion time and the infusion speed are reached.

The utility model discloses add weighing sensor, the reduction volume of liquid medicine in the accurate measurement infusion process feeds back to central controller, again by central processor regulation and control wriggling device, can realize ration, constant speed, regular infusion closed-loop control, reaches high accuracy infusion effect, can realize simultaneously that the liquid medicine infusion finishes the back system automatic shutdown, avoids the air admission patient vein to produce the risk. Optionally join in marriage the heating module, realize the control to the liquid medicine temperature, can carry out the liquid medicine heating of constant temperature when the infusion in winter, promote the comfort level of patient's infusion. Meanwhile, two power supply modes (an external power supply and a built-in battery) are adopted, the use requirements of different scenes are met, and the application range is wider.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A closed-loop feedback infusion pump comprising a central controller (1), said central controller (1) being powered by a power supply device (7), characterized in that: the central controller (1) is connected with an alarm (2), a display (3) and a keyboard (4), the central controller (1) is provided with a UART interface (5) and a USB interface (6), a heater (9), a flow detector (10), a bubble detector (11) and a blocking detector (12) are arranged on a transfusion tube (18) below an infusion bag (17), the heater (9), the flow detector (10), the bubble detector (11) and the blocking detector (12) are all connected with the central controller (1), the central controller (1) is further connected with a motor driver (14), the motor driver (14) is connected with a progress motor (13), the progress motor (13) is connected with a peristaltic device (16), the transfusion tube (18) is arranged between the peristaltic device (16) and a squeezing plate (15), the infusion bag (17) is arranged below a weighing sensor (8), the weighing sensor (8) is connected with the central controller (1).

2. A closed loop feedback infusion pump according to claim 1, wherein: the power supply device (7) is an external power supply.

3. A closed loop feedback infusion pump according to claim 1, wherein: the power supply device (7) is a built-in power supply.