CN2071950U - Portable digital instrument for measuring marrow pressure - Google Patents
Portable digital instrument for measuring marrow pressure Download PDFInfo
- Publication number
- CN2071950U CN2071950U CN 90206740 CN90206740U CN2071950U CN 2071950 U CN2071950 U CN 2071950U CN 90206740 CN90206740 CN 90206740 CN 90206740 U CN90206740 U CN 90206740U CN 2071950 U CN2071950 U CN 2071950U
- Authority
- CN
- China
- Prior art keywords
- measuring
- portable digital
- digital instrument
- marrow
- pressure
- 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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- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The utility model relates to a portable digital instrument for measuring marrow pressure belonging to the field of electronic medical appliances, which is composed of a needle head, a rubber eye catheters, a sensor and an electric circuit. The portable digital instrument for measuring marrow pressure achieves total automation in the process of measuring the pressure of spinal fluid, and enhances work efficiency and measuring accuracy. The utility model has the advantages of reasonable design structure, low cost, small size, low power consumption and portability. The utility model is a good checking instrument for health workers to test lumbar puncture.
Description
This utility model relates to a kind of digital intramedullary pressure meter, specifically is used for the electronic medical equipment that waist is worn inspection, and it is made up of syringe needle, gum elastic catheter, pick off and circuit part.
At present, when check measurement marrow hydraulic coupling is worn as waist by China hospital, be that marrow liquid is introduced grass tube, observation conduit internal medullary mass liquid level carries out.This method requires grass tube to have suitable height, and operating process is careless, breaks up glass tubing, and the outflow of marrow liquid will cause great risk.Measuring process anxiety simultaneously, loaded down with trivial details, efficient is low, because of whole process needs three medical care personnel at least, holds stopwatch for one and gives the correct time, to observe and record for one, a masterpiece nursery work is also because the observation error of human eye and inaccurate.
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of portable digital instrument for measuring marrow pressure is provided.
The purpose of this utility model can realize by following measure:
The portable digital instrument for measuring marrow pressure that is provided is made up of syringe needle, gum elastic catheter, pick off and circuit part.Circuit part by voltage stabilizing, regularly, amplification and display part form, this circuit regularly part is made of LM555 time-base integrated circuit and Resistor-Capacitor Unit, amplifier section is made of amplifier OP--07; The display part constitutes OSC1 foot and V 7106 by biproduct typing AD conversion sheet 7106 liquid crystal board 3504SH
+The switch J of relay J is housed between the foot
1-1The tandem direct current regulation circuit that voltage stabilizing partly is made up of 2 audion 3A * 52B, Sensor section have adopted the solid-state resistance pick off of CYG--06 type.
Compared with the prior art this utility model has outstanding advantage, the whole automatizatioies that realized marrow hydraulic coupling measuring process, improve the precision of work efficiency and measurement, selected for use integrated circuit to replace grass tube, reduced danger, and the conversion accuracy height, the linearity is good, and capacity of resisting disturbance is strong, the structural design of whole system is compact tight, cheap, volume is small and exquisite, and power consumption is low, be easy to carry, easy to use.
Accompanying drawing 1 provides circuit part schematic diagram of the present utility model, and Fig. 2 is an overall perspective view.
(1) is the display part among the figure;
(2) are amplifier section among the figure;
(3) are the voltage stabilizing part among the figure;
(4) are regularly part among the figure;
(5) are Sensor section among the figure.
This utility model will be described further in conjunction with the embodiments:
The portable digital instrument for measuring marrow pressure that this utility model provides is to be designed for the electronic medical equipment that waist is worn inspection, and it is made up of syringe needle, gum elastic catheter, pick off and circuit part.With syringe needle patient's marrow liquid is introduced gum elastic catheter, be filled with the sterilization normal saline in the conduit in advance, pollute with direct contact of pick off to avoid patient's marrow liquid.The marrow action of hydraulic force is in Sensor section (5), and converts voltage signal to, inputs to display part (1) and show after amplification circuits (2) is amplified.Show a tested sample point per 5 seconds, 3 seconds measured data keep showing therebetween, followed to change in back 2 seconds to show, and red led are bright back 2 seconds the time, to show difference.Every patient is measured 12 sample points, and whole process just is through with.
Sensor section has adopted the solid-state piezoresistance sensor of CYG--06 type, it utilizes electrical bridge principle, do the time spent when being under pressure, the electric bridge disequilibrium, output reaches the pressure measurement purpose corresponding to stressed voltage signal, the range of CYG--06 pick off is 0--40Kpa, serviceability temperature is-40 degree--+70 degree, nonlinearity is ± 0.5%, full scale output 49.27mV.
Amplification circuits (2) is that high-operational amplifier OP--07 constitutes by low drift, and its amplification is about 14 times, and display circuit part (1) is that integrated AD conversion sheet 7106 liquid crystal board 3504SH constitute by both party.Their progress of work is the ultra-weak electronic signal that such pick off conversion is come, and inputs to the ICL7106 signal input part after amplifying circuit amplifies, at this moment, if timing circuit is when exporting the positive pulse level in 3 seconds, then relay adhesive, 7106 OSC1 foot and V
+Foot is communicated with, and this signal numerical value that collects just keeps showing that when exporting the zero level in 2 seconds as if timing circuit, then relay discharges, and disconnects OSC1 foot and V on liquid crystal display screen
+At this moment line between foot shows that following input changes, and lumination of light emitting diode, and to show difference, this has just realized gathering a sample data 5 seconds, and data stationary shows the function in 3 seconds.
The tandem direct current regulation circuit that mu balanced circuit part (3) is made up of 2 audion 3A * 52B, it becomes 9V voltage stabilizing output with the voltage of 15V battery, 9V voltage stabilizing output back is by the 100uf capacitance partial pressure of two serial connections, and centre tap, earth potential as entire circuit, and the 9V single supply is become ± the 4.5V dual power supply, as the power supply of amplifier OP--07 and pick off.
Timing circuit part (4) is made up of the external part Resistor-Capacitor Unit of LM555 time-base integrated circuit, and timing is 5 seconds, and dutycycle is 60%.
Claims (5)
1, a kind of portable digital instrument for measuring marrow pressure is characterized in that it is made up of syringe needle, gum elastic catheter, pick off and circuit part.
2, portable digital instrument for measuring marrow pressure as claimed in claim 1, it is characterized in that said circuit by voltage stabilizing, regularly, amplification and display circuit form.
3, portable digital instrument for measuring marrow pressure as claimed in claim 2, the timing part that it is characterized in that this circuit is made of LM555 time-base integrated circuit Resistor-Capacitor Unit, amplifier section is made of amplifier OP--O7, and the display part is made of biproduct typing AD conversion sheet 7106 liquid crystal board 3504SH.
4, portable digital instrument for measuring marrow pressure as claimed in claim 3 is characterized in that 7106 OSC1 foot and V
+The switch J of relay J is housed between the foot
1-1
5, portable digital instrument for measuring marrow pressure as claimed in claim 1 is characterized in that selected transducer range is 0--40Kpa, and nonlinearity is ± 0.5% solid-state piezoresistance sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90206740 CN2071950U (en) | 1990-05-13 | 1990-05-13 | Portable digital instrument for measuring marrow pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90206740 CN2071950U (en) | 1990-05-13 | 1990-05-13 | Portable digital instrument for measuring marrow pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2071950U true CN2071950U (en) | 1991-02-27 |
Family
ID=4887273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90206740 Withdrawn CN2071950U (en) | 1990-05-13 | 1990-05-13 | Portable digital instrument for measuring marrow pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2071950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103705205A (en) * | 2012-09-29 | 2014-04-09 | 上海中医药大学附属普陀医院 | Inferior palpebral margin pressure detector |
-
1990
- 1990-05-13 CN CN 90206740 patent/CN2071950U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103705205A (en) * | 2012-09-29 | 2014-04-09 | 上海中医药大学附属普陀医院 | Inferior palpebral margin pressure detector |
| CN103705205B (en) * | 2012-09-29 | 2016-03-23 | 上海中医药大学附属普陀医院 | Inferior palpebral margin pressure detector |
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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 |