CN208589197U - It is a kind of can it is automatic continuous generate negative pressure epidural space simulator - Google Patents
It is a kind of can it is automatic continuous generate negative pressure epidural space simulator Download PDFInfo
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- CN208589197U CN208589197U CN201820117467.8U CN201820117467U CN208589197U CN 208589197 U CN208589197 U CN 208589197U CN 201820117467 U CN201820117467 U CN 201820117467U CN 208589197 U CN208589197 U CN 208589197U
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- epidural space
- negative pressure
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Abstract
The utility model relates to Medical simulation teaching equipment technical fields, it is specifically a kind of can the automatic continuous epidural space simulator for generating negative pressure, including simulating epidural space, pressure sensor, micropump, microcontroller, simulation epidural space is connect with pressure sensor and micropump respectively by pipeline, and pressure sensor and micropump are connected with microcontroller signal respectively.The utility model is compared with prior art, the advantage is that: can meet the needs of medical personnel carries out multiple puncture procedure to epidural space, negative pressure is remained in epidural space, for instructor, it can suspend at any time during puncture procedure to be explained to anesthetic puncture technical ability main points, and convenient for making negative pressure appearance of the student viewing to after puncturing successfully；For medico, multiple puncture procedure can be carried out, after the completion of the practice of upper primary puncture procedure, the practice of puncture procedure next time can be carried out immediately, clinic environment is improved, improve quality of instruction and efficiency.
Description
Technical field
The utility model relates to Medical simulation teaching equipment technical field, specifically one kind automatic continuous can be generated negative
The epidural space simulator of pressure.
Background technique
Caudal anaesthesia claims " epidural space block anesthesia " in profession, i.e., local anaesthetics is injected epidural space, blocks ridge
Nerve root temporarily makes its zone of action generate paralysis.Epidural block all obtains extensively in any operation in addition to head
Application, be a kind of clinically common anesthesia.When carrying out epidural puncture, need by fill the water repeatedly or gas injection examination
Test to determine whether paracentesis depth and position are correct.It include dura mater in the lumbar vertebrae model of epidural space seen in currently on the market
The formation of exocoel negative pressure, mainly by adding negative pressure manually, and negative pressure cannot continue.
If China's number of patent application 200910011343.7 discloses spinal puncture training stimulation standard patient, implementing
In puncture process, it is necessary to which the hand ball for being press-connected model spinal epidural cavity realizes spinal epidural cavity negative pressure.For another example China is special
Sharp application number 201611019814.5 discloses spinal epidural cavity and automatically forms negative pressure device, and the hard hard exocoel of ridge is through thin in this application
Conduit is connected to minipump after connecting with vacuum tube again, need to press when being punctured to spinal epidural cavity vacuum key 1-2 seconds, by thin
Pipe is connected to thick vacuum tube, then is connected to vacuum pump, forms negative pressure to realize.Although the technical solution is replaced by minipump
Changed hand ball, but there are still negative pressure cannot automatic continuous holding the problem of, during determining paracentesis depth and position, often
It requires manually to carry out key 1-2 seconds after secondary water filling or gas injection, just can guarantee negative pressure, be not easy to impart knowledge to students and operation practice makes
With.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, a kind of simple structure and reasonable design, energy are provided
Enough automatic continuous generation negative pressure, and it is automatically drained out waste liquid, to realize the epidural space simulator of closed-loop control of negative pressure.
In order to achieve the purpose that above-mentioned utility model, the utility model designs one kind can the automatic continuous dura mater for generating negative pressure
Exocoel simulator, including simulation epidural space 1, pressure sensor 2, micropump 3 and microcontroller 5, the simulation dura mater
Exocoel 1 is connect by pipeline with micropump 3, and the pressure sensor 2 is used to monitor the pressure in simulation epidural space 1, and
And the pressure sensor 2 and micropump 3 is connected with 5 signal of microcontroller respectively, with simulation epidural space 1,
Closed-loop control of negative pressure is realized between microcontroller 5 and micropump 3.
Signal processing circuit, control circuit and the driving circuit being sequentially connected are equipped in the microcontroller 5, it is described
Signal processing circuit is used to receive and handle the pressure signal of the pressure sensor 2, and the control circuit is used for basis
Pressure signal controls driving circuit, and the driving circuit is for driving micropump 3 to work.
The control circuit is connected to the input terminal of driving circuit by pwm signal.
The input terminal of the driving circuit and the base stage of NPN type triode Q1 and the base stage of PNQ type triode Q2 are distinguished
Be connected, the triode Q1 is connected to field-effect tube after being connected with the emitter of triode Q2, the field-effect tube with it is micro-
Type pump 3 is connected.
The simulation epidural space 1 is made of the flexible material with compactness.
The micropump 3 is air-liquid dual-purpose pump, simulation epidural space 1 is accessed by small hose 4, for that will simulate dura mater
Outside liquid or air discharge cavity in exocoel 1.
Compared with prior art, structure is simple for the utility model, easy to use, the advantage is that:
The utility model can meet the needs of medical personnel carries out multiple puncture procedure to epidural space, in epidural space
It remains negative pressure, for instructor, can suspend at any time during puncture procedure to be wanted to anesthetic puncture technical ability
Point is explained, and convenient for making negative pressure appearance of the student viewing to after puncturing successfully；For medico, it can carry out more
Secondary puncture procedure, and after the completion of a upper student or upper primary puncture procedure practice, next student can be carried out immediately
Or the practice of puncture procedure next time, clinic environment is improved, quality of instruction and efficiency are improved.
[Detailed description of the invention]
Fig. 1 is the structural schematic diagram of utility model device in an embodiment；
Fig. 2 is the connection schematic diagram of each component of utility model device in an embodiment；
Fig. 3 is the electrical schematic diagram of utility model device in an embodiment；
Fig. 4 is the structural schematic diagram of utility model device micropump in an embodiment；
Fig. 5 is the side view of Fig. 4；
Icon: 1, simulate epidural space；2, pressure sensor；3, micropump；4, small hose；5,6. motor of microcontroller
7. 8. entrance 9. of the pump housing exports.
[specific embodiment]
The utility model is described further in conjunction with attached drawing, the people of the structure of the utility model equipment therefor to this profession
For be very clearly.It should be appreciated that specific implementation described herein is only used to explain the utility model, it is not used to
Limit the utility model.
The technical solution of the utility model creativeness forms closed system, so that can automatically simultaneously in simulation epidural space 1
Negative pressure is continuously generated, the defect of state of the art is solved, initiative realizes continuously automatically keeping for negative pressure.
Referring to Fig. 1, it is described can the automatic continuous epidural space simulator for generating negative pressure include simulation epidural space 1,
Pressure sensor 2, micropump 3, small hose 4 and microcontroller 5.The simulation epidural space 1 by pipeline respectively with pressure
Sensor 2 and micropump 3 connect, and the pressure sensor 2 and micropump 3 are connected with 5 signal of microcontroller respectively,
To realize closed-loop control of negative pressure between simulation epidural space 1, microcontroller 5 and micropump 3.
The simulation epidural space 1 is provided with the closed cavity in inside that connector is connect with small hose, by flexible material
It is made, there is certain compactness, can operate repeatedly without leaving the obvious pin hole marking.
The micropump 3 is air-liquid dual-purpose pump, accesses simulation epidural space 1 by small hose 4, can be hard by simulation
Liquid or air extraction in film exocoel 1.
The small hose 4, plays the role of connection and transmission, and both ends are separately connected simulation epidural space 1 and miniature
Pump 3, while 4 top set of small hose is connected to pressure sensor 2.
The pressure sensor 2, effect are the pressure signals in real-time reception simulation epidural space 1, and synchronous by pressure
Force signal passes to microcontroller 5.
The microcontroller 5, effect are the pressure letters detected inside 2 feedback analog epidural spaces 1 of pressure sensor
Number, and micropump 3 is controlled, so that persistently keeping negative pressure in simulation epidural space 1.
The working principle of the utility model is as follows, injects anesthesia liquid or air when puncture needle enters simulation epidural space 1
When, so that pressure rise in simulation epidural space 1, microcontroller 5 receive the simulation epidural space that pressure sensor 2 detects
Pressure signal in 1, pressure are higher than set negative pressure value, because simulation epidural space 1, microcontroller 5 and micropump 3 form
One closed-loop control of negative pressure system, at this point, microcontroller 5 control air in the extraction simulation epidural space 1 of micropump 3 or
Anesthesia liquid stops working after so that its pressure is reached the negative pressure value of setting；When puncture needle operates repeatedly, in closed-loop control of negative pressure system
Under the auto-control of system, realizes in simulation epidural space 1 and remain negative pressure.
Referring to fig. 2, in the present embodiment, the signal processing and control flow of the present apparatus are as follows, the microcontroller 5
It is interior equipped with the signal processing circuit, control circuit and driving circuit that are sequentially connected, the signal processing circuit and control circuit
It is all made of the circuit of the prior art, this is clear for a person skilled in the art and may be implemented, in this embodiment party
It is not repeated in formula, and the control circuit specifically uses a chip microcontroller, present embodiment uses STM32F10 system
Column single-chip microcontroller is used as control chip, control system by PID, i.e. Proportion Integration
Differentiation. proportional-integral derivative controller, the method for control are led to according to the deviation of setting value and measured value
Pid parameter calculating is crossed, output pwm signal, i.e. pulse-width signal are realized and automatically controlled.It is counted it is characterized in that being joined by PID
It calculates, so that control precision is greatly improved, it is small to generate negative pressure fluctuation.Pwm control signal is exported through driving circuit and field-effect
Manage micropump processed, it is possible to reduce power consumption improves the micropump service life.The single-chip microcontroller, and can be real for realizing PID control
Existing parameter setting, measured value are shown and the function of pid parameter setting, single-chip microcontroller commonly used in the prior art are able to achieve this reality
Function involved in mode is applied, therefore its model is not particularly limited to herein, uses the single-chip microcontroller of other models to realize
The device of closed-loop control of negative pressure function is encompassed by within the protection scope of the utility model in simulation epidural space 1.
The signal processing circuit is used to receive and handle the pressure signal of the pressure sensor 2, and by pressure
Signal is transferred to the control circuit of single-chip microcontroller, and when pressure signal is higher than the negative pressure value of setting, the control circuit is to driving
Circuit is controlled, and working signal is issued, and the driving circuit drives micropump 3 to start to work, and will simulate epidural space 1
In air or anesthesia liquid discharge.
The program software that the technical program is not related to controlling the improvement in terms of computer software each component is all made of
Be this field common knowledge and the prior art, be not therefore not repeated herein where the innovative point of the technical program.
In present embodiment, connection to driving circuit and control circuit and other circuits has carried out following design, referring to fig. 2 and
Fig. 3, by, by signal processing circuit, being judged by control circuit after the pressure in the detection simulation epidural space 1 of pressure sensor 2
And control signal is issued, achieve the purpose that hold negative pressure by driving circuit driving FET control micropump.The control electricity
Road is connected to the input terminal of driving circuit by pwm signal, and the driving circuit of the present apparatus mainly has triode Q1 and triode Q2
It collectively forms, specific structure is as follows: the input terminal of the driving circuit and the base stage of NPN type triode Q1 and PNQ type three
The base stage of pole pipe Q2 is respectively connected with, and the triode Q1 is connected to the grid of field-effect tube after being connected with the emitter of triode Q2
Pole, the drain electrode of field-effect tube and the grounded collector of triode Q2, the collector of triode Q1 connect VCC power supply, the field effect
Should the source electrode of pipe be connected with micropump 3.
It is equipped with referring to fig. 4 with Fig. 5, the micropump 3 including motor and the pump housing being connected with motor, the pump housing
The entrance of entrance and outlet, micropump 3 is connected with simulation epidural space 1 by pipeline, when micropump 3 receives microcontroller 5
Working signal after, the motor of micropump 3 is started to work, so that the gas in epidural space 1 or liquid discharge will be simulated, thus
Change the negative pressure in simulation epidural space 1, is adapted it with setting value；Pressure sensor 2 will constantly simulate epidural space 1
The pressure signal of interior negative pressure is transferred to microcontroller 5, after the pressure signal that microcontroller 5 receives meets setting value, i.e., to micro-
Type pump 3 issues the signal to stop working, and the motor of micropump 3 stops working after receiving signal.
Claims (6)
1. one kind can it is automatic continuous generate negative pressure epidural space simulator, including simulation epidural space (1), pressure sensor
(2), micropump (3) and microcontroller (5), it is characterised in that the simulation epidural space (1) passes through pipeline and micropump (3)
Connection, the pressure sensor (2) are used to monitor the pressure in simulation epidural space (1), and the pressure sensor
(2) it is connected respectively with described microcontroller (5) signal with micropump (3), in simulation epidural space (1), microcontroller (5)
Closed-loop control of negative pressure is realized between micropump (3).
2. as described in claim 1 can it is automatic continuous generate negative pressure epidural space simulator, it is characterised in that it is described
Signal processing circuit, control circuit and the driving circuit being sequentially connected, the signal processing circuit are equipped in microcontroller (5)
For receiving and handling the pressure signal of the pressure sensor (2), the control circuit is used for according to pressure signal pair
Driving circuit is controlled, and the driving circuit is for driving micropump (3) to work.
3. as claimed in claim 2 can it is automatic continuous generate negative pressure epidural space simulator, it is characterised in that it is described
Control circuit is connected to the input terminal of driving circuit by pwm signal.
4. as claimed in claim 3 can it is automatic continuous generate negative pressure epidural space simulator, it is characterised in that it is described
The input terminal of driving circuit is respectively connected with the base stage of NPN type triode Q1 and the base stage of PNQ type triode Q2, three poles
Pipe Q1 is connected to field-effect tube after being connected with the emitter of triode Q2, the field-effect tube is connected with micropump (3).
5. it is as claimed in claim 1 or 2 or 3 or 4 can the automatic continuous epidural space simulator for generating negative pressure, feature exists
It is made in the simulation epidural space (1) of the flexible material with compactness.
6. it is as claimed in claim 1 or 2 or 3 or 4 can the automatic continuous epidural space simulator for generating negative pressure, feature exists
It is air-liquid dual-purpose pump in the micropump (3), accesses simulation epidural space (1) by small hose (4), it is hard for that will simulate
Outside liquid or air discharge cavity in film exocoel (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820117467.8U CN208589197U (en) | 2018-01-24 | 2018-01-24 | It is a kind of can it is automatic continuous generate negative pressure epidural space simulator |
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| CN201820117467.8U CN208589197U (en) | 2018-01-24 | 2018-01-24 | It is a kind of can it is automatic continuous generate negative pressure epidural space simulator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108053733A (en) * | 2018-01-24 | 2018-05-18 | 上海弘联医学科技集团有限公司 | It is a kind of can it is automatic continuous generate negative pressure epidural space simulator |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108053733A (en) * | 2018-01-24 | 2018-05-18 | 上海弘联医学科技集团有限公司 | It is a kind of can it is automatic continuous generate negative pressure epidural space simulator |
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