CN103893857A - Medical infusion monitoring system - Google Patents
Medical infusion monitoring system Download PDFInfo
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- CN103893857A CN103893857A CN201410142873.6A CN201410142873A CN103893857A CN 103893857 A CN103893857 A CN 103893857A CN 201410142873 A CN201410142873 A CN 201410142873A CN 103893857 A CN103893857 A CN 103893857A
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Abstract
The invention relates to a medical infusion monitoring system. The medical infusion monitoring system comprises a data processing center, an alarm terminal and a nurse terminal. The data processing center, the alarm terminal and the nurse terminal are connected via a radio network and/or cable network. The data processing center is used for transmitting basic information of users to the alarm terminal and the nurse terminal. The alarm terminal is used for sending alarm information when medical liquor level in an infusion bottle is lower than a warning level, acquiring code numbers of the alarm terminal and transmitting the alarm information and the code number of the alarm terminal to the nurse terminal. The medical infusion monitoring system sends out the alarm information when the alarm terminal detects that the medical liquor level in the infusion bottle is lower than the warning level, transmits the alarm information and the code numbers of the alarm terminal to the nurse terminal, the alarm terminal sending the alarm signal can be quickly acquired according to the code number of the alarm terminal, inspection tour of working staff is omitted, time is saved, and work efficiency is improved.
Description
Technical field
The present invention relates to field of information management, particularly relate to a kind of medical infusion monitoring system.
Background technology
Transfusion is processing method conventional in medical treatment, and each hospital all has transfusion hall.During due to transfusion, medicinal liquid directly enters in patient's blood circulation, if due to doctor, nurse's carelessness, cause inputting medicinal liquid and exist patient allergy material, or in infusion process, do not change dressings in time or pull out syringe needle, cause air intravasation to form thromboembolism, will cause very serious consequence, even patient there will be life danger.
Traditional infusion model is generally to be accompanied by family members, mainly be careful the situation of transfusion, to report situations to nurse in time, on the other hand, nurse needs the uninterrupted notice of making an inspection tour or waiting at any time patient or families of patients conventionally, before go to process patient's transfusion situation, cause like this work efficiency low.
Summary of the invention
Based on this, be necessary the problem low for traditional infusion model work efficiency, a kind of medical infusion monitoring system that can increase work efficiency is provided.
A kind of medical infusion monitoring system, comprises data processing centre, alarm terminal and nurse terminal, between described data processing centre, alarm terminal and nurse terminal, connects by wireless network and/or cable network; Described data processing centre is for sending to described alarm terminal and nurse terminal by user's essential information; Described alarm terminal, in the time infusion bottle water level being detected lower than warning line, sends warning message, obtains the numbering of alarm terminal, and the numbering of described warning message and alarm terminal is sent to described nurse terminal.
In an embodiment, described alarm terminal comprises photoelectric sensing siren and alarm module therein, and described photoelectric sensing siren is connected with described alarm module, and described photoelectric sensing siren is attached on described infusion bottle; Described photoelectric sensing siren is for detection of infusion bottle water level, and judges that whether described infusion bottle water level is lower than warning line; Described alarm module is for, sending warning message, and described warning message is sent to described nurse terminal by wireless network and/or cable network during lower than warning line at described infusion bottle water level.
In an embodiment, described alarm terminal also comprises for being arranged on the photographic head on drip stand therein, the image that described photographic head is infused for gathering user, and described image is sent to described nurse terminal by wireless network and/or cable network.
In an embodiment, described alarm terminal also comprises the first mike, warning button and the first interactive module therein, and described warning button produces call signal while being used for being triggered; Described the first interactive module is used for receiving the warning message of transfusion and user's essential information, and receives the mutual request that user initiates to nurse, and described mutual request is sent to described nurse terminal; Described the first mike, for after the mutual request of initiation, receives user's voice messaging, and described user's voice messaging is sent to described nurse terminal.
Therein in an embodiment, described the first interactive module is also for obtaining the numbering of alarm terminal, and the numbering of described alarm terminal and user's essential information is bound, and the numbering of the alarm terminal of described binding and user's essential information is sent to described data processing centre; Described data processing centre is also for sending to described nurse terminal by the numbering of the alarm terminal of described binding and user's essential information.
Therein in an embodiment, described nurse terminal comprises second microphone and the second interactive module, described second microphone is for initiating after mutual request in the first interactive module of described alarm terminal, for receiving nurse's voice messaging, and described nurse's voice messaging is sent to described alarm terminal; Described the second interactive module is for receiving the warning message of transfusion, the numbering of alarm terminal and user's the essential information of binding, and the alarm terminal of binding according to user's essential information access and described user's essential information.
In an embodiment, described data processing centre comprises connected data base and main frame therein, and described data base is for storing user's essential information; Described main frame is used for extracting user's essential information from described data base, and described essential information is sent to described alarm terminal and nurse terminal.
In an embodiment, described data processing centre also comprises the gsm module being connected with described host module therein; Described main frame is also for sending to described user's essential information the mobile terminal of appointment with note or multimedia message form by gsm module.
In an embodiment, described nurse terminal is mobile phone, panel computer or personal digital assistant therein.
In an embodiment, described data processing centre, alarm terminal and nurse terminal include WIFI module therein, and described data processing centre, alarm terminal and nurse terminal are carried out wireless communication by WIFI module separately.
Above-mentioned medical infusion monitoring system, detect infusion bottle water level by alarm terminal, when lower than warning line, send warning message, and the numbering of warning message and alarm terminal is sent to nurse terminal, according to the numbering of alarm terminal can quick obtaining to the corresponding alarm terminal that sends alarm signal, do not need manual patrol, save time, improved work efficiency.
Realize radio communication by WIFI module, can add network node in remote corner and can realize communication, communication range is large, distance; User's essential information can be sent to by gsm module on the mobile terminal of user's appointment, facilitate user to know individual essential information;
Whether can detect fast and accurately transfusion water level lower than warning line by photoelectric sensing siren, the image that can be in real time user be infused by photographic head send to nurse terminal, facilitates nurse to grasp user's situation of infusing, and raises the efficiency; Can nurse terminal carry out interactive voice by the first mike; Can send call signal in emergency by warning button, guarantee safety.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of medical infusion monitoring system in an embodiment;
Fig. 2 is the structured flowchart of data processing centre in an embodiment;
Fig. 3 is that in an embodiment, medical infusion monitoring system passes through the schematic diagram of WIFI network service;
Fig. 4 is the structured flowchart of alarm terminal in an embodiment;
Fig. 5 is the structured flowchart of nurse terminal in an embodiment.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 is the structured flowchart of medical infusion monitoring system in an embodiment.As shown in Figure 1, this medical infusion monitoring system, comprises data processing centre 100, alarm terminal 200 and nurse terminal 300, between data processing centre 100, alarm terminal 200 and nurse terminal 300, connects by wireless network and/or cable network.Data processing centre 100 is for sending to user's essential information alarm terminal 200 and nurse terminal 300; Alarm terminal 200, in the time infusion bottle water level being detected lower than warning line, sends warning message, obtains the numbering of alarm terminal 100, and the numbering of warning message and alarm terminal 100 is sent to nurse terminal 300.Wherein, the numbering of alarm terminal 100 is the marks for representing that it is unique, such as A0001 etc.
Between data processing centre 100, alarm terminal 200 and nurse terminal 300, can, connect by cable network by wired connection together; Data processing centre 100, alarm terminal 200 and nurse terminal 300 include WIFI module, and data processing centre 100, alarm terminal 200 and nurse terminal 300 are carried out wireless communication by WIFI module separately.
Above-mentioned medical infusion monitoring system, detect infusion bottle water level by alarm terminal, when lower than warning line, send warning message, and the numbering of warning message and alarm terminal is sent to nurse terminal, according to the numbering of alarm terminal can quick obtaining to the corresponding alarm terminal that sends alarm signal, do not need manual patrol, save time, improved work efficiency; Realize radio communication by WIFI module, can add network node in remote corner and can realize communication, communication range is large, distance.
Fig. 2 is the structured flowchart of data processing centre in an embodiment.As shown in Figure 2, data processing centre 100 comprises connected data base 110, main frame 120 and GSM(Global System for Mobile Communications, global system for mobile communications) module 130.
In other embodiments, data processing centre 100 can comprise WIFI module, and main frame 120 is connected with WIFI module, realizes radio communication by WIFI module.
Fig. 3 is that in an embodiment, medical infusion monitoring system passes through the schematic diagram of WIFI network service.In Fig. 3, main frame 120 carries out radio communication by WIFI network and alarm terminal 200 and nurse terminal 300.
In other embodiments, data processing centre 100 can not comprise gsm module 130.
Fig. 4 is the structured flowchart of alarm terminal in an embodiment.As shown in Figure 4, alarm terminal 200 comprises photoelectric sensing siren 210, alarm module 220, photographic head 230, warning button 240, the first interactive module 250 and the first mike 260.
The first interactive module 250 is for receiving the warning message of transfusion and user's essential information, and receives the mutual request that user initiates to nurse, and will ask alternately to send to nurse terminal 300.The first interactive module 250 can offer user by the warning message of the transfusion of reception.
The first interactive module 250 is also for obtaining the numbering of alarm terminal, and the numbering of this alarm terminal and user's essential information is bound, and the numbering of the alarm terminal of this binding and user's essential information is sent to data processing centre 100.Data processing centre 100 is also for sending to nurse terminal 300 by the numbering of the alarm terminal of this binding and user's essential information.After finishing using, user will carry out information elimination.User refers to the patient who receives transfusion.
The first mike 260, for after the mutual request of initiation, receives user's voice messaging, and this user's voice messaging is sent to nurse terminal 300.
In above-mentioned alarm terminal 200, whether can detect fast and accurately transfusion water level lower than warning line by photoelectric sensing siren 210, can in real time the image of user's transfusion be sent to nurse terminal 300 by photographic head 230, facilitate nurse to grasp user's situation of infusing, raise the efficiency; Can nurse terminal carry out interactive voice by the first mike 260; Can send call signal in emergency by warning button 240, guarantee safety.
In other embodiments, only photoelectric sensing siren 21 and alarm module 220 of above-mentioned alarm terminal 200; Alarm terminal 200 also can comprise photoelectric sensing siren 210 and alarm module 220, also can comprise in photographic head 230 and warning button 240 one or both; Also can comprise photoelectric sensing siren 210, alarm module 220, the first interactive module 250 and the first mike 260 etc.
In other embodiments, above-mentioned alarm terminal 200 also comprises WIFI module, and alarm module 220, photographic head 230, warning button 240, the first interactive module 250 are connected with WIFI module respectively with the first mike 260, realize radio communication by WIFI module.
Fig. 5 is the structured flowchart of nurse terminal in an embodiment.As shown in Figure 5, nurse terminal 300 comprises second microphone 310 and the second interactive module 320.
The second interactive module 320 is for receiving the warning message of transfusion, the numbering of alarm terminal and user's the essential information of binding, and the alarm terminal 200 of binding according to user's essential information access and user's essential information.
Can be effectively by the second interactive module 320 and second microphone 310 modules in above-mentioned nurse terminal 300 and alarm terminal 200 carry out information interaction, facilitate nurse and user effectively to link up, improve nurse's work efficiency.
In other embodiments, when nurse terminal 300 comprises WIFI module, second microphone 310 is connected with WIFI module respectively with the second interactive module 320, realizes radio communication by WIFI module.
In addition, the data processing centre 100 in above-mentioned medical infusion monitoring system, alarm terminal 200 and nurse terminal 300 are equipped with power supply unit separately.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a medical infusion monitoring system, is characterized in that, comprises data processing centre, alarm terminal and nurse terminal, between described data processing centre, alarm terminal and nurse terminal, connects by wireless network and/or cable network; Described data processing centre is for sending to described alarm terminal and nurse terminal by user's essential information; Described alarm terminal, in the time infusion bottle water level being detected lower than warning line, sends warning message, obtains the numbering of alarm terminal, and the numbering of described warning message and alarm terminal is sent to described nurse terminal.
2. medical infusion monitoring system according to claim 1, it is characterized in that, described alarm terminal comprises photoelectric sensing siren and alarm module, and described photoelectric sensing siren is connected with described alarm module, and described photoelectric sensing siren is attached on described infusion bottle; Described photoelectric sensing siren is for detection of infusion bottle water level, and judges that whether described infusion bottle water level is lower than warning line; Described alarm module is for, sending warning message, and described warning message is sent to described nurse terminal by wireless network and/or cable network during lower than warning line at described infusion bottle water level.
3. medical infusion monitoring system according to claim 2, it is characterized in that, described alarm terminal also comprises for being arranged on the photographic head on drip stand, the image that described photographic head is infused for gathering user, and described image is sent to described nurse terminal by wireless network and/or cable network.
4. according to the medical infusion monitoring system described in claim 2 or 3, it is characterized in that, described alarm terminal also comprises the first mike, warning button and the first interactive module, and described warning button produces call signal while being used for being triggered; Described the first interactive module is used for receiving the warning message of transfusion and user's essential information, and receives the mutual request that user initiates to nurse, and described mutual request is sent to described nurse terminal; Described the first mike, for after the mutual request of initiation, receives user's voice messaging, and described user's voice messaging is sent to described nurse terminal.
5. medical infusion monitoring system according to claim 4, it is characterized in that, described the first interactive module is also for obtaining the numbering of alarm terminal, and the numbering of described alarm terminal and user's essential information is bound, and the numbering of the alarm terminal of described binding and user's essential information is sent to described data processing centre; Described data processing centre is also for sending to described nurse terminal by the numbering of the alarm terminal of described binding and user's essential information.
6. medical infusion monitoring system according to claim 5, it is characterized in that, described nurse terminal comprises second microphone and the second interactive module, described second microphone is for initiating after mutual request in the first interactive module of described alarm terminal, for receiving nurse's voice messaging, and described nurse's voice messaging is sent to described alarm terminal; Described the second interactive module is for receiving the warning message of transfusion, the numbering of alarm terminal and user's the essential information of binding, and the alarm terminal of binding according to user's essential information access and described user's essential information.
7. medical infusion monitoring system according to claim 1, is characterized in that, described data processing centre comprises connected data base and main frame, and described data base is for storing user's essential information; Described main frame is used for extracting user's essential information from described data base, and described essential information is sent to described alarm terminal and nurse terminal.
8. medical infusion monitoring system according to claim 7, is characterized in that, described data processing centre also comprises the gsm module being connected with described host module; Described main frame is also for sending to described user's essential information the mobile terminal of appointment with note or multimedia message form by gsm module.
9. medical infusion monitoring system according to claim 1, is characterized in that, described nurse terminal is mobile phone, panel computer or personal digital assistant.
10. medical infusion monitoring system according to claim 1, it is characterized in that, described data processing centre, alarm terminal and nurse terminal include WIFI module, and described data processing centre, alarm terminal and nurse terminal are carried out wireless communication by WIFI module separately.
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| CN201410142873.6A CN103893857B (en) | 2014-04-10 | 2014-04-10 | Medical infusion monitoring system |
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| CN201410142873.6A CN103893857B (en) | 2014-04-10 | 2014-04-10 | Medical infusion monitoring system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464724A (en) * | 2017-09-08 | 2019-03-15 | 南京军理科技股份有限公司 | Transfusion alarm method and device and state monitoring method and device |
| CN110522966A (en) * | 2019-08-01 | 2019-12-03 | 阿克索健康科技(广州)有限公司 | A kind of the intelligent transfusion lever system and control method of integrated infusion alarming function |
| CN111135383A (en) * | 2020-01-09 | 2020-05-12 | 上海长海医院 | Intelligent automatic liquid changing and monitoring system |
| CN111905192A (en) * | 2020-09-18 | 2020-11-10 | 上海市金山区亭林医院(中国福利会国际和平妇幼保健院金山分院) | Sick bed and nurse station and sick bed nurse's alarm system |
| CN112870485A (en) * | 2021-01-11 | 2021-06-01 | 创意银航(山东)技术有限公司 | Sharing method and system of infusion alarm |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6790198B1 (en) * | 1999-12-01 | 2004-09-14 | B-Braun Medical, Inc. | Patient medication IV delivery pump with wireless communication to a hospital information management system |
| CN201379841Y (en) * | 2008-06-26 | 2010-01-13 | 吴秀华 | Networked video and audio monitoring system for transfusion |
| CN102122364A (en) * | 2011-02-22 | 2011-07-13 | 电子科技大学 | RFID wireless communication-based transfusion monitoring system |
| US20110196306A1 (en) * | 1999-10-22 | 2011-08-11 | Pompare Technologies, Inc. | Method and Apparatus for Controlling An Infusion Pump or the Like |
| CN202136645U (en) * | 2011-07-12 | 2012-02-08 | 顾特卫 | Medical remote monitoring alarm system |
| CN102553021A (en) * | 2012-03-07 | 2012-07-11 | 张习加 | Unattended intelligent transfusion system |
| CN102961799A (en) * | 2012-12-06 | 2013-03-13 | 长城信息产业股份有限公司 | Outpatient infusion monitoring system and control method thereof |
-
2014
- 2014-04-10 CN CN201410142873.6A patent/CN103893857B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110196306A1 (en) * | 1999-10-22 | 2011-08-11 | Pompare Technologies, Inc. | Method and Apparatus for Controlling An Infusion Pump or the Like |
| US6790198B1 (en) * | 1999-12-01 | 2004-09-14 | B-Braun Medical, Inc. | Patient medication IV delivery pump with wireless communication to a hospital information management system |
| CN201379841Y (en) * | 2008-06-26 | 2010-01-13 | 吴秀华 | Networked video and audio monitoring system for transfusion |
| CN102122364A (en) * | 2011-02-22 | 2011-07-13 | 电子科技大学 | RFID wireless communication-based transfusion monitoring system |
| CN202136645U (en) * | 2011-07-12 | 2012-02-08 | 顾特卫 | Medical remote monitoring alarm system |
| CN102553021A (en) * | 2012-03-07 | 2012-07-11 | 张习加 | Unattended intelligent transfusion system |
| CN102961799A (en) * | 2012-12-06 | 2013-03-13 | 长城信息产业股份有限公司 | Outpatient infusion monitoring system and control method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109464724A (en) * | 2017-09-08 | 2019-03-15 | 南京军理科技股份有限公司 | Transfusion alarm method and device and state monitoring method and device |
| CN110522966A (en) * | 2019-08-01 | 2019-12-03 | 阿克索健康科技(广州)有限公司 | A kind of the intelligent transfusion lever system and control method of integrated infusion alarming function |
| CN111135383A (en) * | 2020-01-09 | 2020-05-12 | 上海长海医院 | Intelligent automatic liquid changing and monitoring system |
| CN111905192A (en) * | 2020-09-18 | 2020-11-10 | 上海市金山区亭林医院(中国福利会国际和平妇幼保健院金山分院) | Sick bed and nurse station and sick bed nurse's alarm system |
| CN112870485A (en) * | 2021-01-11 | 2021-06-01 | 创意银航(山东)技术有限公司 | Sharing method and system of infusion alarm |
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Effective date of registration: 20190522 Address after: Room A-207, Office Building, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, No. 1068 Xueyuan Avenue, Shenzhen University Town, Nanshan District, Shenzhen City, Guangdong Province, 518000 Patentee after: Shenzhen advanced science and technology Cci Capital Ltd Address before: 518055 No. 1068, Xue Yuan Avenue, Xili University Town, Nanshan District, Shenzhen, Guangdong Patentee before: Shenzhen Institutes of Advanced Technology, Chinese Academy of Science |
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Effective date of registration: 20190611 Address after: 519000 12-storey factory building of Zone A, No. 1 Gangle Road, Tangjiawan Town, Zhuhai High-tech Zone, Guangdong Province Patentee after: Zhuhai Zhongke Advanced Technology Research Institute Co., Ltd. Address before: Room A-207, Office Building, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, No. 1068 Xueyuan Avenue, Shenzhen University Town, Nanshan District, Shenzhen City, Guangdong Province, 518000 Patentee before: Shenzhen advanced science and technology Cci Capital Ltd |