CN2065462U - Impedance measuring device for gastric movement - Google Patents
Impedance measuring device for gastric movement Download PDFInfo
- Publication number
- CN2065462U CN2065462U CN 89218768 CN89218768U CN2065462U CN 2065462 U CN2065462 U CN 2065462U CN 89218768 CN89218768 CN 89218768 CN 89218768 U CN89218768 U CN 89218768U CN 2065462 U CN2065462 U CN 2065462U
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- CN
- China
- Prior art keywords
- gastric
- stomach
- circuit device
- gastric emptying
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The utility model relates to an impedance detecting device for gastric movement. The utility model belongs to an electronic instrument used for the medical teaching, the scientific research and the clinic. The utility model is composed of a signal detection circuit device for gastric movement, a signal detection circuit device for gastric emptying, and a synchronous detection circuit device for gastric movement, or gastric emptying and a gastric electric signal. The utility model is used for detecting signals of gastric movement and gastric emptying and synchronously detecting gastric movement, gastric emptying and a gastric electric signal. The blank of the multifunctional detecting device at home and abroad at present is filled. The utility model has the characteristics of no injury, various functions, strong anti-interference capability, high sensitivity, simplicity, convenience and economical efficiency. The utility model can be used for medical teaching, scientific research and clinic. The utility model is especially suitable for the diagnosis, the medication guidance and survey work of basal hospitals.
Description
The present invention relates to medical teaching, scientific research, the clinical electronic machine of using.
Utilization bio-impedance technology to the human viscera organ study, instrument design, the Chinese scholars field of struggling for it in recent years just.According to looking into new data, though external relevant document had the monitor record that utilizes the abdominal part impedance to determine the record of gastric emptying method and be used for human body hollow viscus organ, the structure of instrument and function and the present invention have many significant differences.
The objective of the invention is to manufacture and design a kind of can be for medical teaching, scientific research, clinically provide undamaged and be used for the stomach motion with the gastric emptying signal detection and measure the stomach motion synchronously or the detector of gastric emptying and electro-gastric signals, to fill up domestic and international blank.
This detector is synthetic by the circuit bank of three parts.Be stomach motor message testing circuit device, gastric emptying signal deteching circuit device, stomach motion or gastric emptying and electro-gastric signals sync detection circuit device.A pair of the present invention describes below with reference to detector structural principle block diagram accompanying drawing.(1) is the 100KC square-wave oscillator, (2) be the frequency-selecting voltage-controlled circuit, (3) be high frequency constant current output, (4) be the constant-current source sampling resistor, (5) be the output input conversion apparatus, (6) be power supply stream electrode, (7) be the voltage detecting electrode, (8) be the calibration signal device, (9) be selective frequency amplifier circuit, (10) be detecting circuit, (11) be the compensation amplifying circuit, (12) constant-current source sampling selective frequency amplifier circuit, (13) constant-current source sampling detecting circuit, (14) be the direct current variable bias, (15) be active low-pass filter, (16) active band-pass filter, (17) calibration short switch, (18) be gastric emptying signal pre-arcing road, (19) be stomach motor message pre-arcing road, (20) quiet-dynamic compensation signal indicator, (21) be stomach electricity bipolar lead electrode, (22) low pass filter, (23) stomach electricity calibration signal device, (24) be differential amplifier circuit, (25) be stomach electricity active band-pass filter, (26) be stomach electricity calibration short switch, (27) be electro-gastric signals pre-arcing road, (28) two-channel recorder, (29) human body.
Stomach motor message testing circuit device is to produce square-wave signal by 100KC square-wave oscillator (1), produce the high frequency constant current by frequency-selecting voltage-controlled circuit (2), high frequency constant current output (3), obtain signal through output input conversion apparatus (5), power supply stream electrode (6) and voltage detecting electrode (7) at human body (29) abdomen body-surface specific part, enter selective frequency amplifier circuit (9) amplification, detecting circuit (10) detection then, send into compensation amplifying circuit (11); Meanwhile the constant-current source signal is sampled through constant-current source sampling resistor (4) sampling, constant-current source, and selective frequency amplifier circuit (12) amplifies, constant-current source is sampled detecting circuit (13) detection, send into compensation amplifying circuit (11); Direct current variable bias (14) produces bias voltage and also sends into compensation amplifying circuit (11) simultaneously.To compensate amplifying signal with post-compensation amplifying circuit (11) and send into active band-pass filter (16) the interfering signal filtering, the stomach motor message that keeps is put in advance through stomach motor message pre-arcing road (19) again, sends into two-channel recorder (28) at last and carries out curve record.On output input conversion apparatus (5), be connected to calibration signal device (8) in addition; Being parallel with calibration short switch (17) at active band-pass filter (16) two ends uses for calibration.Be connected to quiet-dynamic, the compensating signal indicator (20) by selector switch control at compensation amplifying circuit (11) outfan with at stomach motor message pre-arcing road (19) outfan.
Gastric emptying signal deteching circuit device is except that being converted to active band-pass filter (16) active low-pass filter (15), stomach motor message pre-arcing road (19) being converted to the gastric emptying signal pre-arcing road (18), and all the other structures are identical with stomach motor message testing circuit device.
Stomach motion or gastric emptying and electro-gastric signals sync detection circuit device are to utilize above-mentioned stomach motion or gastric emptying signal deteching circuit device; Cooperate the detected electro-gastric signals of electro-gastric signals sync detection circuit device to send into two-channel recorder (28) and carry out synchronous recording.Electro-gastric signals sync detection circuit device is two detected electro-gastric signalses of synchronous stomach electricity bipolar lead electrode (21) by human body (29) abdomen body-surface certain bits, through low pass filter (22) filtering, differential amplifier circuit (24) is amplified into stomach electricity active band-pass filter (25) elimination disturbing wave, send into then in the electro-gastric signals pre-arcing road (27) and put in advance, import two-channel recorder (28) at last and carry out synchronous curve record.On differential amplifier circuit (24), be connected to calibration signal device (23) in addition; Being parallel with calibration short switch (26) at stomach electricity active band-pass filter (25) two ends uses for calibration.
This detector except that two-channel recorder (28) all the other by exchange or dc source is treated becomes ± 15 volts of voltages supply with above uses at different levels.
This invention compared with prior art, have multi-functional, not damaged, capacity of resisting disturbance is strong, highly sensitive, noise is little, in light weight, volume is little, portable, easy and simple to handle, economical, can be specially adapted to diagnosis, direction of medication usage and generaI investigation that different medical unit is used for the gastric disease state for medical teaching, scientific research, clinical many-sided the use.
Optimum implementation of the present invention is that electronic section employing integrated operational amplifier is main, and recording section adopts hot pen type recording equipment, and electrode adopts silver---silver chloride non-polarizable electrode, the portable box-like detector that casing adopts light material to combine.
Claims (8)
1, impedance type stomach motion detection instrument is characterized in that this instrument is combined by stomach motor message testing circuit device, gastric emptying signal deteching circuit device, stomach motion or gastric emptying and electro-gastric signals sync detection circuit device three partial circuits.
2, detector feature according to claim 1 is that stomach motor message testing circuit device and gastric emptying signal deteching circuit device are by 100KC square-wave oscillator (1), frequency-selecting voltage-controlled circuit (2), high frequency constant current output (3), output input conversion apparatus (5), power supply stream electrode (6), voltage detecting electrode (7), selective frequency amplifier circuit (9), detecting circuit (10), compensation amplifying circuit (11), constant-current source sampling resistor (4), constant-current source sampling selective frequency amplifier circuit (12), constant-current source sampling detecting circuit (13), direct current variable bias (14), calibration short switch (17), quiet-dynamically, compensating signal indicator (20), two-channel recorder (28), calibration signal device (8) is common to be formed.
3, be also to possess active band-pass filter (16), stomach motor message pre-arcing road (19) in the stomach motor message testing circuit device according to claim 1 or 2 described detector features; Also possess active low-pass filter (15), gastric emptying signal pre-arcing road (18) in the gastric emptying signal deteching circuit device.
4, detector according to claim 1 is characterized in that the entire infrastructure that stomach motion or gastric emptying and electro-gastric signals sync detection circuit device have stomach motor message, a gastric emptying signal deteching circuit device possesses simultaneously signal of telecommunication sync detection circuit device again.
5, it is characterized in that according to claim 1 or 4 described detectors electro-gastric signals sync detection circuit device is made up of stomach electricity bipolar lead electrode (21), low pass filter (22), stomach electricity calibration signal device (23), differential amplifier circuit (24), stomach electricity active band-pass filter (25), stomach electricity calibration short switch (26), electro-gastric signals pre-arcing road (27), two-channel recorder (28).
6, detector according to claim 1 is characterized in that it is main that electronic section adopts integrated operational amplifier.
7, it is characterized in that according to claim 1 or 2 detectors of being narrated electrode adopts silver---silver chloride non-polarizable electrode.
8, detector according to claim 1 is characterized in that this detector can carry out the stomach motor message and detect; The gastric emptying signal detection; Stomach motion and electro-gastric signals synchronous detecting; Gastric emptying and electro-gastric signals synchronous detecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89218768 CN2065462U (en) | 1989-10-30 | 1989-10-30 | Impedance measuring device for gastric movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89218768 CN2065462U (en) | 1989-10-30 | 1989-10-30 | Impedance measuring device for gastric movement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2065462U true CN2065462U (en) | 1990-11-14 |
Family
ID=4873762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89218768 Withdrawn CN2065462U (en) | 1989-10-30 | 1989-10-30 | Impedance measuring device for gastric movement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2065462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104921724A (en) * | 2015-07-17 | 2015-09-23 | 中国医学科学院生物医学工程研究所 | Gastric emptying simulator for electrical impedance imaging detection |
-
1989
- 1989-10-30 CN CN 89218768 patent/CN2065462U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104921724A (en) * | 2015-07-17 | 2015-09-23 | 中国医学科学院生物医学工程研究所 | Gastric emptying simulator for electrical impedance imaging detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |