CN104224160B - Cardiac output detector radio transmitting device - Google Patents
Cardiac output detector radio transmitting device Download PDFInfo
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- CN104224160B CN104224160B CN201310274926.5A CN201310274926A CN104224160B CN 104224160 B CN104224160 B CN 104224160B CN 201310274926 A CN201310274926 A CN 201310274926A CN 104224160 B CN104224160 B CN 104224160B
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- picco
- cardiac output
- lumen tube
- double lumen
- detector
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Abstract
" cardiac output detector radio transmitting device " of the invention, the transient temperature being mainly used in detection human body artery blood.It is to be integrated with the physical layer of CAN protocol and the technical solution of data link layer in foundation CAN bus communication interface, an exactly host can receive, control the technical solution of more extension sets wireless transmission, its structure feature of the invention: transfusion connector, button cell, wireless communication module, wireless communication module shell, temperature sensor, PICCO double lumen tube, conduit retainers and cardiac output detector wireless receiving module and software program composition.Cardiac output detector is also known as PICCO conduit before not innovating, is the measuring apparatus for cardiac output detector front end.The measuring principle of cardiac output detector is to obtain continuous cardiac output (ICCO) using the cardiac output (CO) of heat dilution method measurement single, and by area under analysis arterial pressure wiggle trace.Chest blood volume (ITBV) and extravascular lung water (EVLW) can be calculated simultaneously.
Description
Technical field:
The present invention relates to one kind: cardiac output detector radio transmitting device.It is mainly used in detection human body artery blood
In transient temperature.That is the detection signal that more cardiac output detectors issue gives a cardiac output detector reception device.
Background technique:
Inventive technique of the present invention: it has invented cardiac output detector temperature analog signal and has been converted into digital signal skill
Art.
It is related to the technology of application: CAN bus host is received into more extension functions, innovation and application is more in cardiac output detector
Extension set is wirelessly sent to the technology of host wireless reception of signals.
Traditional cardiac output detector PICCO conduit, is connect by special connector and private cable with host, measurement
After temperature signal, cardiac output situation is shown being transferred to detector.When due to cardiac output detection, while needing to inject cold salt
Liquid, in the time up to two hours, patient needs to drain.When patient needs mobile, it is necessary to together by PICCO and detector
It is mobile, meanwhile, and limited and be inconvenient by power supply line.And a detector can only survey in real time a patient
Amount, while anti-interference ability is weaker, needs expensive screened coaxial cable, also, the transmission of analog signal, is that data are not true
Fixed greatest problem.
The purpose of the present invention is: traditional wired cardiac output detector is exactly substituted with wireless cardiac output detector
PICCO conduit.10 cardiac output detectors are made to share a cardiac output detector.To realize this technical characteristic, this hair
It is bright to use wireless transmission and radio access technology, after PICCO conduit is inserted into human body, by the temperature data of sensor measurement
After (resistance value must change) passes through AD conversion, by the subsidiary serial interface module of wireless launcher, sent out with the format of number
It is sent to wireless transmitter module, the wireless transmitter module of wireless launcher sends data with the format of number, and work is former
Reason: cardiac output detector by transfusion connector, button cell, the wireless communication module of catheter tip, wireless communication module outside
Shell, temperature sensor, PICCO double lumen tube, conduit retainers and wireless receiving module and cardiac output detector composition.Temperature passes
Sensor uses general minor diameter (0.5 millimeter of ￠), and the NTC temperature of quick response (200 milliseconds of response times in liquid) passes
Sensor.Conduit is the double lumen tube for meeting medical treatment certification using the material that ultraprecise injection molding technology produces, and can measure temperature simultaneously
And injecting fluid, catheter head are easily operated using the flowing transition for fitting into human body；Wireless communication module is at conduit end
End, using the explosion-proof hermetically sealed design of encapsulating, has the advantages that the water proof and dust proof of IP65 grade.After PICCO conduit is inserted into human body,
The corresponding relationship that conduit and patient are determined by the address sequence number that base unit search receives PICCO conduit sending, then starts
The temperature data acquired by temperature sensor that real-time reception PICCO conduit issues；Host simultaneously to received data at
Reason.
To realize the present invention its structure feature by: 1.PICCO double lumen tube instrument and 2. detectors form.1.PICCO is bis-
The structure feature of lumen device is: transfusion connector, button cell, wireless telecommunications transmitting module and AD conversion, wireless telecommunications mould
Block shell, temperature sensor, PICCO double lumen tube, conduit retainers composition.
" cardiac output detector radio transmitting device " of the invention is that CAN association is integrated in foundation CAN bus communication interface
The physical layer of view and the technical solution of data link layer, exactly a host can receive, control more extension set wireless transmissions
Technical solution, and the achievable framing processing to communication data, including it is position filling, data block coding, cyclic redundancy check, preferential
The working principle of the items such as grade differentiation.The message transmitted in the bus, every frame are made of 7 parts.CAN protocol supports two kinds of message lattice
Formula is not uniquely both identifier (ID) length difference, and reference format is 11, and extended format is 29.In reference format
In, the start bit of message is known as frame starting (SOF), followed by requests position (RTR) to form by 11 bit identifiers and long-range send
Arbitrate field.RTR are indicated data frame or claim frame, do not have data byte in claim frame.Controlling filed includes that identifier expands
Exhibition position (IDE), it is indicated that be reference format or extended format.It further includes a reserved bit (ro), is used for extension in the future.It
Last four positions be used to indicate the length (DLC) of data in data fields.Data fields range is 0~8 byte, followed by one
The Cyclical Redundancy Check (CRC) of detection data mistake.Response field (ACK) includes response bits and response separator.Dispatching station is sent
This two be recessive level (logic 1), be at this moment properly received message receiving station send master control level (logical zero) covering
It.In this way, dispatching station can guarantee that at least one station can have correctly received message in network.
The content of invention:
Technical solution solved by the invention is: having invented cardiac output digital signal transmission and wireless transmission mould
Block and wireless receiving module.The wireless transmission module passes through the NTC resistance temperature value of PICCO conduit and the corresponding relationship of resistance,
The temperature value of catheter tip can be measured, temperature simulation value is then converted into digital signal and is input to wireless transmitter module,
Wireless transmitter module uses carrier wave principle, is made of high-frequency oscillating circuits and modulation circuit (due to being low power transmissions, so not
Need intermediate amplifying circuit and high frequency power amplifier), it can launch digital signal by antenna, and principle is as follows:
1. high-frequency oscillating circuits: using crystal stabilized oscillator, it is the vibration for replacing LC oscillation circuit using quartz crystal
Circuit is swung, high frequency carrier is played the role of；
2. modulation circuit: low frequency signal being added to the process on high-frequency carrier signal and is known as modulating.At the place of digital signal
It during reason, is communicated using the CAN bus communications protocol of mistake proofing, CAN bus is a kind of effectively support distributed AC servo system or implementation
The serial communication network of control, CAN controller judge bus level according to the potential difference in both threads.Bus level is divided into aobvious
Property level and recessive level, either one or the other.Sender transmits the message to reception by making bus level change
Side has high reliability and accuracy.
3, the special-purpose software researched and developed by manufacturer, software and wireless transmission are stored on detector and wireless receiving module
The synchronous coding address of setting 1 to 10 in module and wireless receiving module, it is wireless that wireless receiving module can receive resolution 1 to 10
The digital signal that communication module issues checks doctor arbitrarily by detector instantaneous in the arterial blood of 1 to 10 patient
Temperature and historical record.
Wireless receiving module:
Wireless receiving module is received using the modulation system of wireless signal, and the coding for receiving signal can distinguish 10 nothings
The signal of line transmitting module obtains digital signal after filtering, has host to show.
Detailed description of the invention:
It Fig. 1, is CAN host (bus) and more extension set structure charts；
It Fig. 2, is cardiac output sensors work schematic diagram of the present invention；
It Fig. 3, is cardiac output PICCO double lumen figure of the present invention；
It Fig. 4, is cardiac output detector circuit schematic diagram of the present invention
It Fig. 5, is that host schematic diagram is passed to by cardiac output detector USB interface；
It Fig. 6, is by USB wireless receiving module schematic diagram.
Specific embodiment:
It is as shown in Figure 1 CAN host (bus) and more extension set structure charts.The present invention is with CAN transmission technology for theoretical base
Plinth is innovated.As shown in figure 3, " cardiac output detector radio transmitting device " its structure feature of the invention is, it is described defeated
Liquid connector 1 connects cold saline solution and PICCO double lumen tube 6, and the wireless communication module 3 of 2 catheter tip of button cell is mounted on
In wireless communication module shell 4, the temperature sensor 5 is mounted on the leading portion in PICCO double lumen tube 6, the temperature sensor 5
It is connect in PICCO double lumen tube 6 with the wireless communication module 3 of the button cell 2 and catheter tip by conducting wire, the conduit
Fixator 7 is mounted on the PICCO double lumen tube 6.The button cell 2 provides power supply for PICCO double lumen tube, and the temperature passes
Sensor 5 can measure and transmit the analog signal of human body blood temperature, and the PICCO double lumen tube 6 can pass through temperature sensor 5
Temperature and simultaneously injecting fluid are measured, the AD conversion can convert analog signals into digital signal, and set by itself
Coded address carry out signal wireless transmission, the conduit retainers 7 are conveniently fixed on human body.As shown in figure 5, the nothing
The synchronous coding address with the wireless transmitter module 3 of the catheter tip is set in line receiving module, can receive resolution 1 to
The digital signal that 10 wireless communication modules issue, and by as shown in Figure 5 and Figure 6, in the USB interface of detector, described in insertion
Wireless receiving module, the software in the detector connect the wireless receiving module, and deposit is researched and developed dedicated soft by manufacturer
Part.The display screen of the detector shows setting 1 to 10 in its software interface and wireless receiving module and wireless transmitter module
Synchronous coding address and record arterial blood chart, and can store, refresh, reset, make doctor by detector arbitrarily check 1 to
Transient temperature and historical record in the arterial blood of 10 patients.
Claims (1)
1. a kind of cardiac output detector radio transmitting device, which uses wireless transmission and radio access technology, sends
Digital signal is converted for the temperature data analog signal of PICCO double lumen tube sensor measurement using CAN protocol in the process, is led to
It crosses and is wirelessly transmitted to detector, the digital signal that 1 to 10 wireless communication module issues is received by the wireless receiving module of detector,
The cardiac output detector radio transmitting device structure feature is made of one, PICCO double lumen tube instrument and two, detector,
One, PICCO double lumen tube apparatus structure is characterized in: transfusion connector, button cell, wireless communication module and AD conversion, channel radio
Interrogate module housing, temperature sensor, PICCO double lumen tube, conduit retainers composition, the transfusion connector connect cold saline solution and
The wireless communication module of PICCO double lumen tube, the button cell and catheter tip is installed in wireless communication module shell, institute
State the leading portion that temperature sensor is mounted in PICCO double lumen tube, the temperature sensor by conducting wire in PICCO double lumen tube with
The connection of the wireless communication module of the button cell and catheter tip, the conduit retainers are mounted on the PICCO double lumen tube
On, the button cell provides power supply for PICCO double lumen tube, and the temperature sensor can measure and transmit human body blood temperature
Analog signal, the PICCO double lumen tube can pass through temperature sensor measurement temperature and simultaneously injecting fluid, the AD conversion
Digital signal can be converted analog signals into, and signal wireless transmission is carried out by the coded address of setting itself, it is described to lead
Tube fixer is conveniently fixed on human body, and the display screen of the detector shows its software interface and wireless receiving module and nothing
The synchronous coding address of setting 1 to 10 and record arterial blood chart, the PICCO double lumen tube use superfinishing in line transmitting module
Close injection molding produces, and the head of the PICCO double lumen tube is streamlined in transition, and the wireless communication module is anti-using encapsulating
The quick-fried end for being sealed in the PICCO double lumen tube, the wireless transmitter module are made of high-frequency oscillating circuits and modulation circuit,
The high-frequency oscillating circuits is crystal stabilized oscillator, and the crystal in the crystal stabilized oscillator is quartz crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310274926.5A CN104224160B (en) | 2013-06-20 | 2013-06-20 | Cardiac output detector radio transmitting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310274926.5A CN104224160B (en) | 2013-06-20 | 2013-06-20 | Cardiac output detector radio transmitting device |
Publications (2)
| Publication Number | Publication Date |
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| CN104224160A CN104224160A (en) | 2014-12-24 |
| CN104224160B true CN104224160B (en) | 2018-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310274926.5A Active CN104224160B (en) | 2013-06-20 | 2013-06-20 | Cardiac output detector radio transmitting device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104665804B (en) * | 2015-01-23 | 2018-02-06 | 深圳大学 | A kind of method and device for monitoring heart stroke |
| CN116919343A (en) * | 2017-01-19 | 2023-10-24 | 海迪有限公司 | Apparatus and method for determining cardiac function of living body |
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| CN101828914A (en) * | 2010-03-17 | 2010-09-15 | 无锡市吉天通信科技有限公司 | Bus type electrocardio-lead and intelligent electrocardio-signal sensor |
| CN102014733A (en) * | 2008-01-31 | 2011-04-13 | 应用生理学有限公司 | Systems, methods and devices for maintenance, guidance and/or control |
| EP2574276A1 (en) * | 2011-09-30 | 2013-04-03 | Pulsion Medical Systems SE | Device for hemodynamic monitoring |
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| US4819655A (en) * | 1987-08-04 | 1989-04-11 | Webler William E | Injectateless thermal cardiac output determination method and apparatus |
| US5037396A (en) * | 1989-03-02 | 1991-08-06 | Becton, Dickinson And Company | Thermoelectric chiller and automatic syringe |
| US7129836B2 (en) * | 2003-09-23 | 2006-10-31 | Ge Medical Systems Information Technologies, Inc. | Wireless subject monitoring system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101052343A (en) * | 2003-09-09 | 2007-10-10 | 凯玛公司 | Apparatus for ascertaining blood characteristics and probe for use therewith |
| CN101252877A (en) * | 2005-08-31 | 2008-08-27 | 皇家飞利浦电子股份有限公司 | System and method for detecting and predicting a syncope event |
| CN102014733A (en) * | 2008-01-31 | 2011-04-13 | 应用生理学有限公司 | Systems, methods and devices for maintenance, guidance and/or control |
| CN101828914A (en) * | 2010-03-17 | 2010-09-15 | 无锡市吉天通信科技有限公司 | Bus type electrocardio-lead and intelligent electrocardio-signal sensor |
| EP2574276A1 (en) * | 2011-09-30 | 2013-04-03 | Pulsion Medical Systems SE | Device for hemodynamic monitoring |
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