CN211835648U

CN211835648U - Need not clinical maintenance's multi-functional infusion monitor of monitoring infusion flow

Info

Publication number: CN211835648U
Application number: CN201922328348.4U
Authority: CN
Inventors: 刘仲馨; 王震伟
Original assignee: Beijing Lifepum Huikang Medical Technology Co ltd
Current assignee: Beijing Lifepum Huikang Medical Technology Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-11-03
Anticipated expiration: 2029-12-23

Abstract

The utility model relates to a multifunctional transfusion monitor for monitoring transfusion flow without clinical maintenance, which comprises a weight measuring mechanism, a data conversion unit connected with the weight measuring mechanism, a singlechip connected with the data conversion unit, a button cell connected with the singlechip, and a wireless communication unit connected with the singlechip, wherein the button cell is connected with a force sensor, a data conversion unit and a wireless communication unit in the weight measuring mechanism through a power supply switch circuit; the infusion monitor abandons the scheme of rechargeable batteries and adopts disposable button batteries, thereby avoiding the daily maintenance of nurses; a power supply switch is adopted in the circuit, after the circuit is put into sleep, only the power supply of the singlechip is kept, and only a sleep current of a few microamperes is needed to be supplied; the wireless communication unit with low power consumption is adopted, so that the power consumption is reduced; software of the single chip microcomputer adopts two sleep modes, namely a long sleep mode and a short sleep mode, and energy conservation and necessary sampling frequency are both considered.

Description

Need not clinical maintenance's multi-functional infusion monitor of monitoring infusion flow

Technical Field

The utility model belongs to the technical field of medical treatment venous transfusion technique and specifically relates to a need not clinical maintenance's multi-functional infusion monitor of monitoring infusion flow.

Background

In the prior art, an infusion bottle or a bag is hung on an infusion monitor, the infusion monitor is hung on an original infusion support, the change of the weight of an infusion container is obtained in a weighing mode, the infusion flow rate is calculated, weight information is transmitted to an infusion information system through wireless communication, the information system calculates and displays the infusion state and prompts in a centralized mode, a rechargeable battery is further arranged in the infusion monitor, and a nurse carries out charging maintenance regularly or as required. The prior art has the defects that in the face of a group with busy overload, such as nurses, information is provided for reducing workload, improving work quality, and ensuring that the nurses take extra energy to charge and pay attention to the change of electric quantity is undoubtedly in conflict with the purpose of using the product.

Meanwhile, the gravity feedback of the infusion monitor for the infusion pump is not considered in the prior art, the weight change condition of liquid in the infusion container is fed back to the infusion pump when the infusion pump is used for infusion, and the defect that the drop number sensor of the existing infusion pump is prone to false alarm is overcome. Thereby forming the full closed loop feedback of the transfusion flow and ensuring that the transfusion is safer and more reliable.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a multifunctional transfusion monitor for monitoring the transfusion flow without clinical maintenance.

In order to realize the purpose, the utility model discloses a technical scheme as follows:

the utility model provides a need not clinical maintenance's multi-functional infusion monitor of monitoring infusion flow, is including the weight measurement mechanism who is used for hanging infusion bottle or bag, the data conversion unit of being connected with weight measurement mechanism, the singlechip of being connected with the data conversion unit, the battery of being connected with the singlechip, the wireless communication unit of being connected with the singlechip, the battery passes through force transducer, data conversion unit, the wireless communication unit in the power switch circuit connection weight measurement mechanism, the signal interface of transfer pump is connected to the singlechip.

Among them, the battery is preferably a micro battery such as a button battery.

Further, weight measurement mechanism includes fixed mounting's stop gear, is located the power conduction ring in the stop gear outside, force sensor, supporting spring and couple, stop gear includes interconnect's spacing portion and installation department, and force sensor's bottom is equipped with the mounting panel, and the both ends of mounting panel are located the bayonet socket of spacing portion, and supporting spring is located the installation department, and supporting spring's one end is connected with the bottom of installation department, and the other end is connected with the bottom of mounting panel, the inboard and the force sensor contact in top of power conduction ring, the bottom of power conduction ring with the couple is connected.

Furthermore, the pre-pressure of the supporting spring is 1.2-3 times of the weighing range.

Further, when the infusion monitor is not connected with an infusion pump, the single chip microcomputer has 2 working modes: when an infusion bottle or a bag is not hung on the infusion monitor, the singlechip operates the power supply switch circuit to cut off the power supply of other circuits, then the singlechip enters a long sleep mode, the singlechip wakes up every 1-10 min to perform detection in the long sleep mode, the force sensor enters the short sleep mode when detecting that a heavy object is hung on the force sensor, and wakes up every 5-60s to perform detection and wireless transmission in the short sleep mode.

Furthermore, the single chip microcomputer can be connected with a signal interface of the infusion pump.

When the infusion monitor is connected with an infusion pump, the infusion monitor is powered by the infusion pump, the single chip microcomputer monitors a handshaking signal from the infusion pump and enters a flow feedback working mode of the infusion pump, the single chip microcomputer does not enter a sleep mode any more, continuously detects weight information and calculates flow rate, actually-measured infusion flow rate is transmitted to the infusion pump through a communication unit powered by the pump, or based on a parameter of 'number of drops per milliliter' of an infusion apparatus, the flow rate is converted into one drop to output an electric pulse, and the feedback function of a drop number sensor is simulated.

Further, the single chip microcomputer can be STM32L4, STM32L5, STM32L0 and other series single chip microcomputers.

The utility model has the advantages that: 1. a rechargeable battery scheme is abandoned, and a disposable button battery is adopted, so that the daily maintenance of nurses is avoided; 2. a power supply switch is adopted in the circuit, after the circuit is put into sleep, only the power supply of the singlechip is kept, and only a sleep current of a few microamperes is needed to be supplied; 3. the wireless communication unit with low power consumption is adopted, so that the power consumption is reduced; 4. software of the single chip microcomputer adopts two sleep modes, namely a long sleep mode and a short sleep mode, and energy conservation and necessary sampling frequency are both considered; 5. the infusion monitor can be matched with an infusion pump for use, full closed loop feedback of infusion of the infusion pump is achieved, and infusion is safer.

Drawings

FIG. 1 is a schematic diagram of the present invention;

FIG. 2 is a schematic structural view of the weight measuring mechanism of the present invention;

fig. 3 is a schematic diagram of the software flow of the present invention.

Detailed Description

As shown in fig. 1 and 2, a multifunctional infusion monitor for monitoring infusion flow without clinical maintenance comprises a weight measuring mechanism for hanging an infusion bottle or bag, a data conversion unit 1 connected with the weight measuring mechanism, a single chip microcomputer 2 connected with the data conversion unit 1, a button cell 3 connected with the single chip microcomputer 2, and a wireless communication unit 4 connected with the single chip microcomputer 2, wherein the button cell 3 is connected with a force sensor 6, the data conversion unit 1 and the wireless communication unit 4 in the weight measuring mechanism through a power supply switch circuit 5, and the single chip microcomputer 2 is connected with a signal interface of an infusion pump 7; the wireless communication unit 4 may preferably be a bluetooth communication unit. The single chip microcomputer 2 can be STM32L4, STM32L5, STM32L0 and other series single chip microcomputers.

Further, weight measurement mechanism includes fixed mounting's stop gear, be located the power conduction ring 8 in the stop gear outside, force sensor 6, supporting spring 10 and couple 11, stop gear includes interconnect's spacing portion 12 and installation department 13, force sensor 6's bottom is equipped with mounting panel 14, the both ends of mounting panel 14 are located spacing portion 12's bayonet socket, supporting spring 10 is located installation department 13, supporting spring 10's one end is connected with the bottom of installation department 13, the other end is connected with the bottom of mounting panel 14, the inboard and the force sensor 6 contact in top of power conduction ring 8, the bottom and the couple 11 of power conduction ring 8 are connected. The pre-pressure of the supporting spring 10 is 1.2-3 times of the weighing range.

In operation, the supporting spring 10 pushes the force sensor 6 to the upper end position of the limiting mechanism, at the moment, a small gap (0.1mm-2mm) is formed between the limiting part 12 of the limiting mechanism and the force transmission ring 8, when a heavy object (an infusion bottle or a bag) is hung on the hook 11, gravity transmits force to the central position of the force sensor 6 through the hook 11 and the force transmission ring 8, and weight is obtained. When the weighing weight is larger than the pre-pressure of the supporting spring 10, the supporting spring 10 is compressed, the force transmission ring 8 descends to be in contact with the limiting mechanism, and the force sensor 6 enters a limiting protection state.

The force sensor 6 adopts a diffusion silicon touch force sensor of the Honeywell company, and has the characteristics of high sensitivity and stable signal; the force transmission mechanism adopting the force transmission ring has the characteristics of stable gravity center and sensitive force transmission; the overload protection function is provided, and overload damage of the force sensor is effectively avoided.

As shown in fig. 3, when the infusion monitor is not connected with the infusion pump 7, the single chip has 2 working modes: the infusion monitor comprises a short sleep working mode and a long sleep working mode, when an infusion bottle or a bag is not hung on the infusion monitor, the single chip microcomputer 2 operates a power supply switch circuit to cut off the power supply of other circuits, then the long sleep mode is entered, the single chip microcomputer wakes up once every 1-10 min to perform detection in the long sleep mode, the force sensor 6 enters the short sleep working mode when detecting that a heavy object is hung on the infusion monitor, and the single chip microcomputer wakes up once every 5-60s to perform detection and Bluetooth emission in the short sleep working mode. The continuous working time of the singlechip is short, generally 5-30ms, after the singlechip wakes up, so the total power consumption is very low, and the working time of the battery is generally more than 1 year;

further, in order to realize the flow feedback for the infusion pump 7, an interface circuit connected with the infusion pump is further arranged, when the infusion monitor is connected with the infusion pump 7, the infusion monitor is powered by the infusion pump 7, the single chip microcomputer 2 monitors a handshaking signal from the infusion pump 7 and enters a flow feedback working mode of the infusion pump 7, the single chip microcomputer 2 does not enter a sleep mode any more, continuously detects weight information and calculates flow rate, actually-measured infusion flow rate is transmitted to the infusion pump 7 through a communication unit 9 powered by the pump, or the flow rate is converted into each drop to output an electric pulse based on a default parameter of 'number of drops per milliliter' of an infusion apparatus, the feedback function of the drop number sensor is simulated, and the feedback function is combined with the infusion pump to form infusion.

The infusion monitor abandons the scheme of rechargeable batteries and adopts disposable button batteries, thereby avoiding the daily maintenance of nurses; a power supply switch is adopted in the circuit, after the circuit is put into sleep, only the power supply of the singlechip is kept, and only a sleep current of a few microamperes is needed to be supplied; the wireless communication unit with low power consumption is adopted, so that the power consumption is reduced; software of the single chip microcomputer adopts two sleep modes, namely a long sleep mode and a short sleep mode, and energy conservation and necessary sampling frequency are both considered; the infusion monitor can be matched with an infusion pump for use, full closed loop feedback of infusion of the infusion pump is achieved, and infusion is safer.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The multifunctional infusion monitor capable of monitoring the infusion flow without clinical maintenance is characterized by comprising a weight measuring mechanism for hanging an infusion bottle or a bag, a data conversion unit connected with the weight measuring mechanism, a single chip microcomputer connected with the data conversion unit, a battery connected with the single chip microcomputer, and a wireless communication unit connected with the single chip microcomputer, wherein the battery is connected with a force sensor, the data conversion unit and the wireless communication unit in the weight measuring mechanism through a power supply switch circuit, and the wireless communication unit is connected with an infusion information system.

2. The multifunctional infusion monitor capable of monitoring the infusion flow without clinical maintenance according to claim 1, wherein the weight measuring mechanism comprises a fixed-mounting limiting mechanism, a force transmission ring located outside the limiting mechanism, a force sensor, a supporting spring and a hook, the limiting mechanism comprises a limiting part and a mounting part which are connected with each other, a mounting plate is arranged at the bottom of the force sensor, two ends of the mounting plate are located in a bayonet of the limiting part, the supporting spring is located in the mounting part, one end of the supporting spring is connected with the bottom of the mounting part, the other end of the supporting spring is connected with the bottom of the mounting plate, the inner side of the top of the force transmission ring is contacted with the force sensor, and the bottom of the force transmission ring is connected with the hook.

3. The multifunctional infusion monitor for monitoring infusion flow without clinical maintenance as claimed in claim 2, wherein the pre-pressure of the supporting spring is 1.2-3 times of the weighing range.

4. The multifunctional infusion monitor for monitoring infusion flow without clinical maintenance as claimed in claim 2, wherein said battery is a button battery.

5. The multifunctional infusion monitor for monitoring the infusion flow without clinical maintenance as claimed in claim 1, wherein the single chip microcomputer has 2 operation modes when the infusion monitor is not connected with the infusion pump: when an infusion bottle or a bag is not hung on the infusion monitor, the singlechip operates the power supply switch circuit to cut off the power supply of other circuits, then the singlechip enters a long sleep mode, the singlechip wakes up every 1-10 min to perform detection in the long sleep mode, the force sensor enters the short sleep mode when detecting that a heavy object is hung on the force sensor, and wakes up every 5-60s to perform detection and wireless transmission in the short sleep mode.

6. The multifunctional infusion monitor for monitoring the flow of infusion solution without clinical maintenance as claimed in claim 1, wherein the single chip microcomputer is connected with the signal interface of the infusion pump.

7. The multifunctional infusion monitor capable of monitoring the infusion flow without clinical maintenance according to claim 6, wherein when the infusion monitor is connected with an infusion pump, the infusion monitor is powered by the infusion pump, the single-chip microcomputer monitors a handshake signal from the infusion pump, the flow feedback operation mode of the infusion pump is entered, the single-chip microcomputer does not enter a sleep mode any more, the weight information is continuously detected, the flow rate is calculated, the measured infusion flow rate is transmitted to the infusion pump through a communication unit powered by the pump, or the flow rate is converted into an electrical pulse output per drop based on a default parameter of 'number of drops per milliliter' of an infusion set, and the feedback function of the drop number sensor is simulated.

8. The multifunctional infusion monitor for monitoring infusion flow without clinical maintenance of claim 2, wherein the single chip microcomputer is a single chip microcomputer of the series of STM32L4, STM32L5 and STM32L 0.