WO2006021154A1

WO2006021154A1 - A central monitoring transfusion method and transfusion monitoring management system

Info

Publication number: WO2006021154A1
Application number: PCT/CN2005/001324
Authority: WO
Inventors: Qun Gu; Yonghong Tan
Original assignee: Shenzhen Shenke Medical Appliances Co., Ltd.
Priority date: 2004-08-27
Filing date: 2005-08-24
Publication date: 2006-03-02
Also published as: CN1586643A

Abstract

A central transfusion monitoring method comprises steps as follows: A. Each monitoring instrument encodes its detected status data and transmits the status data package in wireless mode; B. The transfusion monitoring center receives and decodes the status data package and then display them; C. The transfusion monitoring center transmits a answer-back signal after it received the status data; D. The transfusion monitoring center receives the control data input by a user to amend the control parameters of the transfusion monitoring instrument input, encodes the control data and transmits the data package to control the monitoring instrument. The above method is implemented by a transfusion monitoring management system.

Description

FIELD OF THE INVENTION The present invention relates to medical devices, and more particularly to monitoring a plurality of infusion monitoring devices (including two types of infusion pumps and syringe pumps) through a central host, an infusion monitoring center. Method and infusion monitoring management system for the method. BACKGROUND OF THE INVENTION At present, infusion pumps and syringe pumps (collectively referred to as infusion pumps) used in hospitals are operated independently by a single machine. The structure and working process of the device are shown in FIG. 1A and FIG. 1B. The infusion pump generally includes a CPU, a sensor, and a display device. , man-machine interface such as keyboard or knob, motor and drive module, alarm device, etc. The CPU receives input information through the man-machine interface according to the set program, such as: control command, infusion speed, preset infusion volume, etc., and dynamically displays it on the display in a tabular form; and controls the "motor and drive module" control according to the control command The operation mode and speed of the motor drive the mechanical transmission mechanism to push the syringe or squeeze the infusion tube to achieve the purpose of infusion. During the operation, the CPU continuously collects data such as pressure, air bubbles, displacement, etc. sensed by the sensor, judges the collected data, and makes corresponding treatments such as starting the alarm device or cutting off the power supply, stopping the operation, etc., thereby ensuring safe infusion of the human body. 'But this kind of infusion pump is actually used in the nursing ward. Because there are more patients infusion, the nurse needs to check the working status of an infusion pump or syringe pump in person before going to each bed, so the labor intensity of the nurse is increased. Large, work efficiency is not high, especially when the number of beds is large, the nurse will be exhausted.

In order to reduce the labor intensity of nurses and improve work efficiency, some control systems and devices for intravenous infusion control and alarm by wireless transmission have been proposed, such as: the invention of the invention is CN2631517, the invention is called the intravenous infusion wireless control and alarm device. Patent application, and publication number CN2569357, the invention name is an invention patent application for an infrared wireless infusion monitoring system. Although these invention patent applications are theoretically capable of wirelessly transmitting infusion parameters, remote processing infusion anomalies, and wireless remote alarms, the common problems are: no safety guarantees for data transmission!

Because the electromagnetic interference source of the hospital is complicated, such as: medical equipment generally has strong electromagnetic interference, interference of mobile phone signals, electric sparks generated by the switch of electric lights, air conditioners, etc., and thus electromagnetic interference, etc., may be The wirelessly transmitted data constitutes electromagnetic interference, which affects the security of data transmission. Infusion monitoring systems without data transmission safety assurance measures are difficult to meet in hospitals – applications that often have critically ill patients

Identification Special monitoring requirements! SUMMARY OF THE INVENTION The object of the present invention is to overcome the deficiencies of the prior art described above, and to provide a not only to improve the work efficiency of the nurse, to reduce the workload of the nurse, but more importantly, to be able to safely and reliably deliver the infusion data to meet The hospital's special monitoring requirements for patients, especially critical patients. Technical solution to achieve the above objectives:

A method of centrally monitoring infusion, characterized by comprising the steps of:

A, detecting status data of each infusion monitor, encoding the status data to form a status data packet, and transmitting the status data packet by wireless transmission;

B. The status data packet sent by each infusion monitor is received by the infusion monitoring center and decoded to obtain status data of each infusion monitor, and then the status data is input to the display device for display;

C. When the infusion monitoring center receives the status data and verifies that it is correct, it sends a response signal;

D. After receiving the response signal, the corresponding infusion monitor issues the voice information successfully received by the infusion monitoring center by the voice prompting device. Further, the method further includes the following steps:

E. The infusion monitoring center accepts, by the input device, control data for modifying the control parameters of the infusion monitor by the user;

F. The infusion monitoring center encodes the control data and forms a control data packet, and then sends the control data packet in a wireless transmission manner;

G. The infusion monitor decodes the received control data packet to obtain the control data, and regulates an operation state of the infusion monitor;

H. The infusion monitor sends an acknowledgement signal after receiving the control data and verifying that it is correct. The contents of the status data include: bed number, stop or run, alarm type, syringe size, user-set infusion volume, infusion rate, current cumulative infusion volume. The contents of the control data include: infusion speed, preset infusion volume, stop, start, clear, fast flush, and shutdown signals. An infusion monitoring management system is composed of a plurality of infusion monitors and an infusion monitoring center; the infusion monitor comprises a first central processing unit, and a first wireless communication module connected to the first central processing unit, The first central processing unit encodes the collected self state data and forms a state data packet. The status data packet is sent by the first wireless communication module; the infusion monitoring center includes a second central processing unit, and a second wireless communication module and a display device connected to the second central processing unit, the second wireless communication The module decodes and outputs the status data packet of each infusion monitor received by the second central processing unit, and displays it on the display device. The first and second wireless communication modules are both wireless data communication modules having a receiving/transmitting function, and the infusion monitoring center further includes an input device connected to the second central processing unit; The control data input by the input device is encoded, and the encoded control data packet is sent by the second wireless communication module; the first wireless communication module receives the control data packet and is decoded by the first central processing unit The control data is obtained to control the working state of the infusion monitor.

Further, the method further includes a voice prompting device, wherein the voice prompting device is connected to the first central processing unit, and when the first wireless communication module receives the response signal sent by the infusion monitoring center when the status data is successfully received, the first The central processing unit inputs the status data to the voice prompting device and successfully receives the corresponding voice information by the infusion monitoring center. With the above technical solutions, the beneficial technical effects of the present invention are:

1. Each infusion monitor sends the status parameter data to the infusion monitoring center by wireless transmission. Therefore, the nurse can check the working status of the infusion pump before each bed, and can save the inspection of each bed, just sit in the nurse. Before the infusion monitoring center of the station, the status parameter data of each infusion monitor can be dynamically monitored in real time through the display screen, and the working state of each infusion pump can be grasped.

2. The data of each infusion monitor and the control data of the infusion monitoring center are transmitted by means of data packets, which greatly avoids electromagnetic interference of various electromagnetic interference sources to wirelessly transmit data, and ensures the security of data transmission. Fully meet the special monitoring requirements for hospital patients, even critical patients!

3. The data packet is transmitted in the form of response, avoiding the receipt of erroneous data, causing malfunction, and avoiding data loss, resulting in malfunction or no action, further ensuring the security of data transmission.

4. By setting the voice prompt device on each infusion monitor, the status parameter data of the abnormal situation of the infusion monitor has been safely transmitted to the information of the infusion monitoring center and/or the patient in the infusion monitoring center is timely informed to the patient, which can be timely Eliminate the anxiety of patients and their accompanying staff, and eliminate the psychological burden of people.

5. Because the infusion monitoring center can input the control data of changing the control parameters of an infusion monitor through the input device of the center, and package the control data to the designated infusion monitor, adjust and control the station. The control parameters of the infusion monitor thus enable the control of the infusion monitor, thus realizing real-time and comprehensive monitoring and control of each infusion monitor.

6, using the method of cyclic reading of state data, one can effectively avoid the interference between the infusion monitors; Second, it can effectively avoid the loss caused by the error or loss of individual data packets, further improving the system's Work reliability. In summary, the present invention not only ensures safe and reliable monitoring of the patient's infusion, but also eliminates the psychological burden of the patient and its accompanying staff, and reduces the nurse's, because of the unique wireless transmission method and system. The workload has increased work efficiency and liberated the nurse's workforce. BRIEF DESCRIPTION OF THE DRAWINGS Figs. 1A and 1B are a block diagram and a flow chart showing the structure of a conventional infusion pump.

Figure 2 is a block diagram of the system of the present invention.

Figure 3 is a flow chart of the infusion pump of the present invention.

Figure 4 is the workflow of the infusion monitoring center of the present invention.

Figure 5 shows the workflow of the infusion monitoring center using a computer host as the display.

FIG. 6 is a structural block diagram of a wireless communication module XE1201 used in the present invention. DETAILED DESCRIPTION OF THE INVENTION The present invention will be further described in detail below based on the accompanying drawings and embodiments:

Referring to FIG. 2, an infusion monitoring management system is composed of a plurality of infusion monitors 1 and an infusion monitoring center 2, and the infusion monitor 1 includes two types of infusion monitoring and injection monitoring, collectively referred to as an infusion monitor. The infusion monitor includes the same parts as the existing infusion pump: a sensor, a display screen, a human-machine interface such as a keyboard or a knob, a motor and a drive module, a mechanical transmission mechanism, an alarm device, and a first central processing unit, and includes a first wireless communication module and a voice prompting device connected to the first central processing unit. During the operation of the infusion monitor, the first central processing unit continuously collects state data such as pressure, air bubbles, displacement, etc. sensed by the sensor, and performs judgments and corresponding processes such as starting the alarm device or cutting off the power supply to stop and continue to operate; The first central processing unit first encodes the collected current state data according to a certain data format, and then, in order to avoid electromagnetic interference, improve the security of data transmission, and then package the encoded state data into state data. After the packet is converted into a radio frequency signal by the first wireless communication module, and then sent out through the antenna, the packaged status data packet may be sent periodically at a certain time interval, or may be when the infusion monitor works. Randomly transmitting when changing; the infusion monitoring center 2 includes a power source and a second central processing unit. And a second wireless communication module connected to the second central processing unit and a display device and an input device connected to the second central processing unit; the second wireless communication module passes the received status data packet through the second central processing through the receiving antenna After the unit is decoded, it is restored to status data and verified (the data packet has a fixed format, and there is an agreed check code. If the check code of the data packet is incorrect, the data packet is invalid. In addition, the machine model and ID number have one. A correspondence relationship, if not met, is also invalid.) After that, on the one hand, the first wireless communication module transmits a response signal for receiving the status data, and on the other hand, the status data is displayed on the display device. There are a variety of display devices, usually using a display, that is, displaying the status data of each infusion monitor in a graphically and numerically corresponding manner on the display. When the time interval of the sent status data is short, for example, when the first wireless communication module sends a data packet every second, the sending and receiving data packets are continuously dynamically changed, and the status data of each infusion monitor displayed on the display can be It is considered to be dynamic and real-time, so real-time monitoring of each monitor is achieved through the monitoring center.

In the system of the present invention, the first and second wireless communication modules employ a wireless data communication module having a receiving/transmitting function, and the infusion monitoring center further adds an input device such as a keyboard or a knob as a human machine interface. The infusion monitoring center accepts the user's control data for modifying the infusion monitor control parameters through the input device, for example, the control data for changing the infusion pump infusion speed through the keyboard input. The second central processing unit of the infusion monitoring center first encodes the control data input through the input device according to a certain data format, and then, in order to avoid electromagnetic interference, improve the security of data transmission, and then package the encoded control data. And transmitting, by the second wireless communication module, the response signal of the received status data packet; the first wireless communication module of the designated infusion monitor receives the control data packet and the response signal through the antenna, and receives on the one hand The control data packet is decoded and converted into the control data by the first central processing unit, and the designated infusion monitor adjusts and controls the working state parameters according to the control data, for example, adjusting and controlling the motor running speed of the infusion pump to accelerate the infusion speed or Slowly; on the other hand, the first central processing unit inputs the status data to the voice prompting device according to the received response signal, and the infusion monitoring center successfully receives the corresponding voice prompt information, so as to timely eliminate the patient and its accompanying personnel. Status data, special It is the concern that the information of the abnormal situation is delivered to the infusion monitoring center. The use of voice prompting devices subtly reduces the psychological burden of people.

The system not only realizes the real-time monitoring and safe transmission status data of each infusion monitor through the infusion monitoring center, but also realizes the response of the infusion monitor status data received by the infusion monitoring center and the infusion monitoring. Adjustment and control of certain control parameters of the instrument.

The wireless data communication module with the receiving/transmitting function adopted by the first and second wireless communication modules has a transmission power of less than 10 mW and a transmission speed of 19,200 bps. Since its power is less than the 10mW power limited by the committee, The use does not require the approval of the committee, and the radiation is small, but the transmission distance in the open area can also reach 100 meters, which can cover the general ward and meet the needs of general hospitals. The wireless transfer of data between the infusion pump and the infusion monitoring center not only achieves the purpose of the invention, but also freely sets and moves the infusion monitors within the disease interval/area, regardless of location.

The working status data sent by the infusion monitor at regular timing includes: bed number, stop or run, alarm type, syringe size, user-set infusion volume, infusion rate, current cumulative infusion volume, including alarm type: infusion pump or injection Whether the pump is blocked, whether there is air bubble in the infusion pump, or whether the infusion pump has an operation error during the operation setting process of opening/closing the door. The format of the data packet can be varied. The data packet format of one embodiment of the present invention is as follows - the packet length is 10 bytes, where - the first byte of the bed number

2nd byte instrument number, infusion pump / type of syringe pump

3rd byte High byte of speed Note: Speed =1-5000

4th byte low byte of speed

5th byte The high byte of the accumulated amount Note: The cumulative amount = 1-9999

The sixth byte of the cumulative low byte

7th byte Status byte: BIT7 0=none 1=block

BIT6 - one - 0 = none 1 = close

BIT5 -— -- 0=none 1=complete

BIT4 - - - ― 0=stop 1=Running

BIT3 - - - ― 0=none 1=low battery voltage

BIT2 - - - ― 0=none 1=none

BIT1 — - - 0=AC 1=Battery powered

BIT0 -—— -- Reserved

8th byte - the high byte of the preset amount Note: Preset amount = 1-9999

Byte 9: The low byte of the preset amount

10th byte: Reserved

The start symbol of the packet is set to 02 and the termination symbol is set to 03.

In the data packet of the above format, one of the plurality of infusion monitors is determined by the combination of the information of the first and second bytes, because in the actual application, two infusion monitoring may be set at the side of the bed. Instrument situation, The uniqueness of the infusion monitor must be reflected by the combination of the information of the byte 1 "bed number" and the byte 2 "instrument number, pump type"; the 0th and 10th bytes in the 7th byte are reserved words. Sections, depending on the situation, are bubbles in the alarm type, operational errors, etc., as well as other required information.

The control data packaged and sent by the infusion monitoring center generally includes: infusion speed, preset infusion volume, stop, start, clear, fast flush, shutdown, etc. The format of the control data packet can be varied, and the control data packet of one embodiment of the present invention The format is as follows:

The packet length is 10 bytes, where:

1st byte: Bed number

2nd byte: instrument number, pump type

3rd byte: the high byte of speed, this byte is invalid if it is 0XFF

4th byte: the low byte of speed, if the 3rd byte is 0XFF, the byte is invalid

5th byte: The high byte of the preset infusion volume. If the byte is 0XFF, it is invalid.

Bit 6: The low byte of the preset infusion volume. If the 5th byte is 0XFF, the byte is invalid. 7th byte:

BIT7: 1 one shutdown

BIT6: 1 start

BIT5: 1 stop

BIT4: 1 clear

BIT5: 1 flush

When ΒΙΤ2, ΒΠΊ, ΒΙΤ0 is 111, the 7th byte is valid.

8th byte: Reserved

Byte 9: Reserved

10th byte: Reserved

Similarly, in the control packet of the above format, one of the plurality of infusion monitors is determined by the combination of the information of the first and second bytes.

Figures 3 and 4 illustrate the workflow of the infusion monitor and infusion monitoring center. It can be seen from Fig. 3 that after the infusion monitor is turned on, the first central processing unit (CPU1) continuously reads the keyboard or the knob, accepts the specified information set by the person, and checks whether the user changes the control parameter; during the running, the CPU 1 continuously reads The state data sensed by the sensor, and the control data packet is read from the first wireless communication module, the control data packet is decoded and restored into a control parameter, and the running speed and state of the motor are controlled to be processed accordingly; at the same time, the CPU 1 further Will The collected status data is encoded and packed into a status data packet, and then the status data packet is placed in the BUFFER; the status data packet in the BUFFER is written into the first wireless communication module and sent out periodically. As can be seen from FIG. 4, the second central processing unit (CPU2) of the infusion monitoring center cyclically reads the status data packets of the infusion monitors received by the second wireless communication module, and the CPU 2 decodes the status data; Aspects display the status data of each infusion monitor dynamically and in real time on the display device in a graphical and digital manner, and on the other hand, send a response signal of the received status data via the first wireless communication module; when the first central processing unit After receiving the response signal by the first wireless communication module, the CPU1 inputs to the voice prompting device the voice prompt information that the status data is successfully received by the infusion monitoring center, and timely eliminates the worry of the patient and its accompanying personnel. When the user inputs control data for modifying an infusion monitor control parameter through the input device, the CPU 2 encodes and packages the control data into a control data packet, and then writes the control data packet to the second wireless communication module and transmits it.

Table 1 gives the partial response signal type and the processing method after the infusion monitoring center receives the parameters. The parameters included in the table include: speed, preset amount, bed number, diameter, drug name, patient weight, syringe length, blocking sensitivity. , bubble sensitivity, etc., according to the different infusion monitoring centers of each parameter issued by each infusion monitor to make different treatment.

In practical applications, the infusion monitoring center can be composed of a receiver and a computer. Figure 5 shows the knot. The working flow chart of the structure, the dotted line inside is the receiver part. The receiver includes a second wireless communication module and

CPU2, and an RS232 interface; the display device and the input device are implemented by a computer, and the computer communicates with the CPU 2 through an RS232 communication interface. The advantage of this is that the infusion monitoring center can be implemented using an existing source and using a computer to install a receiver.

In a specific embodiment of the present invention, the first and second wireless communication modules use the same wireless data communication module with a receiving/transmitting function, such as the XE1201 manufactured in Switzerland, which has a common frequency of 433 MHz and an airspeed of up to 64000. Bps, the functional block diagram of the module is shown in Figure 6. When used as the first wireless communication module in the infusion monitor, the bus terminal of the XE1201 module is connected to the CPU end of the SD terminal and the EN terminal and the RXTX terminal, and the encoded status data packet is input by the TXD terminal of the module. After the digital frequency synthesizer and the modulator, an RF signal is obtained at the output of the RF power amplifier RF0UT, and then transmitted through the antenna; when used as the receiving control data, the RF signal received by the receiving antenna is received by the RFA end of the module. The RFB terminal inputs, after filtering and demodulator, outputs undecoded control packets on the RXD terminal. When the XE1201 is used as the second wireless communication module in the infusion monitoring center, the bus terminal of the XE1201 module is connected to the SD end of the SC end and the EN end and the RXTX end are connected to the CPU 2. The encoded control packet is transmitted by the TXD end of the module. After inputting, through the digital frequency synthesizer and the modulator, an RF signal is obtained at the output of the RF power amplifier RF0UT, and then transmitted through the antenna; or the received RF signal is input by the RFA end and the RFB end of the module through the receiving antenna. After filtering and demodulator, undecoded status data packets are output on the RXD terminal.

It is to be understood that those skilled in the art can make equivalent substitutions or changes to the inventions and the inventions of the present invention. All such changes or substitutions are intended to fall within the scope of the appended claims.

Claims

Rights request

1. A method of centrally monitoring infusion, characterized by comprising the steps of:

B. The infusion monitoring center receives the status data packet sent by each infusion monitor and decodes it to obtain status data of each infusion monitor, and then inputs the status data to the display device for display.

2. The method according to claim 1, wherein: the method further comprises the steps of:

C. The infusion monitoring center sends an acknowledgement signal after receiving the status data and verifying that it is correct.

3. The method according to claim 2, wherein the method further comprises the steps of:

D. After receiving the response signal, the corresponding infusion monitor issues the voice information successfully received by the infusion monitoring center through the voice prompting device.

4. The method of claim 1 wherein: said infusion monitoring center cyclically reads status data packets transmitted by each of the infusion monitors.

The method according to any one of claims 1 to 4, characterized in that the method further comprises the following steps:

G. The infusion monitor decodes the received control data packet to obtain the control data, and regulates an operation state of the infusion monitor.

6. The method of claim 5, wherein:

H. The infusion monitor sends an acknowledgement signal after receiving the control data and verifying that it is correct.

7. The method according to claim 5, wherein: the content of the status data comprises: bed number, stop or run, alarm type, syringe size, user-set infusion volume, infusion speed, current cumulative infusion The content of the control data includes: infusion speed, preset infusion amount, stop, start, clear, fast flush, and shutdown signal.

8. An infusion monitoring management system, comprising: a plurality of infusion monitors and an infusion monitoring center; the infusion monitor comprising a first central processing unit, and a first central processing unit a first wireless communication module, the first central processing unit encodes the collected self state data and forms a status data packet, and the status data packet is sent by the first wireless communication module; the infusion monitoring center includes a second central processing a unit, and a second wireless communication module and a display device connected to the second central processing unit, wherein the second wireless communication module decodes and outputs the received status data packet of each infusion monitor via the second central processing unit. Displayed on the display device.

The system according to claim 8, wherein: the first and second wireless communication modules are wireless data communication modules having a receiving/transmitting function, and the infusion monitoring center further comprises a second central unit An input device connected to the processing unit; the second central processing unit encodes control data input via the input device, and transmits the encoded control data packet through the second wireless communication module; the first wireless communication module Receiving the control data packet, and decoding the control data by the first central processing unit to control the working state of the infusion monitor.

10. The system according to claim 9, comprising: a voice prompting device, wherein the voice prompting device is connected to the first central processing unit, and when the first wireless communication module receives the infusion monitoring center, the status data is successfully received. When the response signal is transmitted, the state data is input to the voice prompting device by the first central processing unit, and the corresponding voice information is successfully received by the infusion monitoring center.