CN202875320U - Small-sized bladder disease monitor - Google Patents
Small-sized bladder disease monitor Download PDFInfo
- Publication number
- CN202875320U CN202875320U CN 201220514238 CN201220514238U CN202875320U CN 202875320 U CN202875320 U CN 202875320U CN 201220514238 CN201220514238 CN 201220514238 CN 201220514238 U CN201220514238 U CN 201220514238U CN 202875320 U CN202875320 U CN 202875320U
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- Prior art keywords
- small
- bladder
- pressure sensor
- bladder disease
- disease monitor
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- Expired - Fee Related
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Abstract
The utility model provides a small-sized bladder disease monitor. The small-sized bladder disease monitor comprises a voltage stabilization direct-current power source, a miniature pressure sensor, a controller, a liquid crystal display, and an analog to digital (A/D) converter. The voltage stabilization direct-current power source supplies electricity for the miniature pressure sensor, the pressure sensor obtains a bladder pressure voltage signal, and then after the bladder pressure voltage signal is enlarged through a differential amplifier, the bladder pressure voltage signal is supplied for a single chip to process, and at last a bladder pressure monitoring result can be displayed. The small-sized bladder disease monitor is convenient to operate, small in trauma, low in cost, good in correlation, and capable of achieving real-time monitoring for bladder pressure, has the advantages of being short in measuring time, precise in data, high in degree of automation and the like, and brings convenience to medical workers to know conditions of a patient well in time.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments of bladder disease, relates in particular to a kind of miniature monitor of energy Real-Time Monitoring intravesical pressure.
Background technology
Abroad, Kron has at first proposed to press mensuration, UBP (intravesical pressure) to measure the clinical medicine problem that solves by bladder; Afterwards, Pottecher advocated and can treat the abdominal compartment syndrome by continuous monitoring UBP; 1987, Takayama etc. proposed to measure with the pressure transducer of their development the method for bladder pressure.
Mostly aforementioned measurement bladder pressure is to insert bladder by catheter, and slowly injects about 50ml normal saline toward bladder, the pressure when then measuring liquid and flowing out from bladder.This method simple practical is measured numerical value and can truly be reflected human bladder's force value.But this method has a very fatal shortcoming, be that bladder pressure of every measurement just needs toward normal saline of bladder, general Intensive Care Therapy is to inject every 4～12 hours to measure once, this discontinuous measurement might affect the medical worker and in time understand the patient's bladder pressure changing, even incurs loss through delay the Best Times of implementing rescue.
The utility model content
Need to just can carry out bladder pressure to the bladder saline injection for overcoming at present, and the deficiency that can not measure in real time, this utility model provides a kind of small-sized bladder disease monitor, need not to measure in real time bladder pressure to the bladder saline injection, and then reach the purpose of Real-Time Monitoring bladder disease.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of small-sized bladder disease monitor is provided, comprises constant voltage dc source, micro pressure sensor, controller, LCDs and A/D converter.The direct current of voltage regulation source output terminal connects respectively the power pins of micro pressure sensor, controller and LCDs, the micro pressure sensor signal output part is connected with the difference amplifier input, the difference amplifier outfan is connected in an I/O port of controller, and LCDs is connected with A/D converter with an I/O port of controller and is connected.
Described constant voltage dc source output voltage is stable+5V DC voltage.
Described micro pressure sensor is miniature probe type pressure transducer, and the bridge circuit by 4 adjustable resistance R0 form produces both-end output signal u1 and u2.
Described difference amplifier is comprised of operational amplifier A 1, resistance R 1-R3 and capacitor C 1-C3.
Described controller is single-chip microcomputer.
This utility model is easy and simple to handle, and wound is little, and is inexpensive, and dependency is good, can realize the Real-Time Monitoring to bladder pressure, has Measuring Time weak point, data accurately and the automaticity advantages of higher, makes things convenient for the medical worker in time to grasp patient's state of an illness.
Description of drawings
Fig. 1 is this utility model system architecture diagram.
Fig. 2 is this utility model micro pressure sensor schematic diagram.
Fig. 3 is this utility model difference amplifier schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Micro pressure sensor adopts the sonde-type pressure transducer, it is the single-chip microcomputer of STC12C5616AD that controller adopts model, LCDs model QC12864B, constant voltage dc source output voltage V CC is stable+5V DC voltage, is used for being miniature probe pressure transducer, difference amplifier, single-chip microcomputer and LCDs power supply.Pressure transducer is experienced the variation of bladder pressure, produces both-end output signal u1 and u2.This both-end output signal is amplified through difference amplifier and is obtained single-ended voltage signal Vctrl, by single-chip microcomputer to its collection and convert digital signal to and call in internal memory and process.Carry out data operation through coding, data after the conversion are converted into real force value once again, the point coordinates that is scaled afterwards on the LCDs is presented on the screen one by one, can support that the force value in 30 seconds shows, has therefore just formed pressure-time (P-t) curve.This curve is visual and clear, is conducive to Data Comparison and analysis, grasps better patient's situation.As shown in Figure 2, the bridge circuit that miniature probe type pressure transducer is comprised of 4 adjustable resistance R0 produces both-end output signal u1 and u2; As shown in Figure 3, difference amplifier is comprised of operational amplifier A 1, resistance R 1-R3 and capacitor C 1-C3, and operational amplifier A 1 model is LM358P, and u1 is connected in the in-phase input end 2 of A1 through resistance R 1, u2 is connected in the inverting input 1 of A1 through resistance R 2, resistance R 3 is connected between the inverting input 1 and outfan Vctrl of A1, and capacitor C 1 one ends link to each other with u1, other end ground connection, capacitor C 2 one ends link to each other with u2, other end ground connection, capacitor C 3 one ends link to each other with Vctrl, other end ground connection.
Claims (5)
1. small-sized bladder disease monitor, it is characterized in that, comprise constant voltage dc source, micro pressure sensor, controller, LCDs and A/D converter, described direct current of voltage regulation source output terminal connects respectively the power pins of micro pressure sensor, controller and LCDs, the micro pressure sensor signal output part is connected with the difference amplifier input, the difference amplifier outfan is connected in an I/O port of controller, and LCDs is connected with A/D converter with an I/O port of controller and is connected.
2. small-sized bladder disease monitor as claimed in claim 1 is characterized in that, described constant voltage dc source output voltage is stable+5V DC voltage.
3. small-sized bladder disease monitor as claimed in claim 1 is characterized in that, described micro pressure sensor is miniature probe type pressure transducer, the bridge circuit that is comprised of 4 adjustable resistance R0.
4. small-sized bladder disease monitor as claimed in claim 1 is characterized in that, described difference amplifier is comprised of operational amplifier A 1, resistance R 1-R3 and capacitor C 1-C3.
5. small-sized bladder disease monitor as claimed in claim 1 is characterized in that, described controller is single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220514238 CN202875320U (en) | 2012-10-09 | 2012-10-09 | Small-sized bladder disease monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220514238 CN202875320U (en) | 2012-10-09 | 2012-10-09 | Small-sized bladder disease monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202875320U true CN202875320U (en) | 2013-04-17 |
Family
ID=48066793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220514238 Expired - Fee Related CN202875320U (en) | 2012-10-09 | 2012-10-09 | Small-sized bladder disease monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202875320U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871655A (en) * | 2012-10-09 | 2013-01-16 | 扬州大学 | Small-size bladder disease monitor |
| CN103892820A (en) * | 2014-03-05 | 2014-07-02 | 首都医科大学 | Implantable wireless passive bladder pressure detection system |
-
2012
- 2012-10-09 CN CN 201220514238 patent/CN202875320U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871655A (en) * | 2012-10-09 | 2013-01-16 | 扬州大学 | Small-size bladder disease monitor |
| CN103892820A (en) * | 2014-03-05 | 2014-07-02 | 首都医科大学 | Implantable wireless passive bladder pressure detection system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20151009 |
|
| EXPY | Termination of patent right or utility model |