CN103610485B - Device and method for automatically controlling blood occlusion of carotid artery - Google Patents
Device and method for automatically controlling blood occlusion of carotid artery Download PDFInfo
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- CN103610485B CN103610485B CN201310664468.6A CN201310664468A CN103610485B CN 103610485 B CN103610485 B CN 103610485B CN 201310664468 A CN201310664468 A CN 201310664468A CN 103610485 B CN103610485 B CN 103610485B
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00199—Electrical control of surgical instruments with a console, e.g. a control panel with a display
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Abstract
The invention discloses a device and a method for automatically controlling blood occlusion of the carotid artery. The device is formed by an installation base plate, a slide support, an air pressure blocking module, an air pressure control module and n wireless blood oxygen measurement modules. The air pressure control module is installed in an air pressure control module guide groove of the slide support which is arranged in a slide support guide groove of the base plate. The air pressure blocking module is positioned below the air pressure control module and connected with the air pressure control module into a whole. The wireless blood oxygen measurement modules are used for calculating blood oxygen values. A single-chip microcomputer in the air pressure control module receives the blood oxygen values measured by the wireless blood oxygen measurement modules through wireless communication circuits, collects pressure of pressure sensors and automatically controls pressurization and pressure reduction of air pressure of the air pressure blocking module. The air pressure control module and single-chip microcomputers in the blood oxygen measurement modules control air pressure and blood oxygen measurement according to program control processes. By means of the method adopting wireless communication, structural design is simplified, redundant wire connection is eliminated, and the device is scientific, reliable, practical and good in effect.
Description
One, technical field
The present invention relates to a kind of Medical Instruments, particularly one compressing carotid artery, from the instrument of extracorporeal blocking carotid artery flow.
Two, background technology
For the test-and-treat of some disease, need the carotid artery flow of temporary blocking-up patient side, clinical normal by doctor's hand operation, and due to the experience of doctor and the reason such as tired, hand operation often affects treatment effect.Chinese patent ZL89221081.8, ZL92231446.2, ZL99253968.4 disclose the carotid compressing apparatus that three kinds block carotid artery flow, solve by doctor's hand operation, block the problem of patient's neck arteries blood flow.But also there is following problem in these three kinds of apparatuses: 1 can not monitor blood flow barrier effect and according to bloodstream blocking effect adjust in time exert pressure and Xining; 2 can not obtain carotid artery flow blocks data, comprise exert pressure, the time of exerting pressure, bloodstream blocking effect etc.Chinese patent ZL200910058468.5 solves the problems referred to above, but creates new deficiency: 1 overall structure is unreasonable, and line is oversize too much, may affect other operation in diagnosis and treatment; 2 designs are complicated, not science, and actual dependability is bad; 3 blood oxygen transducers are very few, can only monitor a position; 4 blood oxygen transducers adopt transmission mode, wired connection, are unfavorable for operation.
Three, summary of the invention
Object of the present invention is for the deficiencies in the prior art, provides a kind of brand-new carotid artery flow to block automaton and control method.This device can realize automatically blocking carotid artery flow, improves surgical quality, again can simplified apparatus structure well, science, reliability, the practicality of very big raising equipment.
The object of the invention is to reach like this:
Control device is blocked module, air pressure control module and radio blood oxygen measurement module formed by mounting base, sliding support, air pressure.Sliding support is arranged on mounting base, and air pressure control module is arranged in the air pressure control module guide groove of sliding support, and air pressure blocks module and to be placed in below air pressure control module and to be connected as a single entity, and radio blood oxygen measurement module arranges n as required.Be provided with single-chip microcomputer in air pressure control module to block the air pressure of module to air pressure and automatically control, carry out pressurizeing and reducing pressure, be provided with radio communication circuit and radio blood oxygen measurement module realizes transmission of wireless signals.Be provided with single-chip microcomputer in radio blood oxygen measurement module and carry out Oximetry control, be provided with wireless communication module and air pressure control module realizes transmission of wireless signals.
Described mounting base is made up of mounting base pedestal, neck brace and sliding support guide groove, and sliding support guide groove is arranged at the both sides of mounting base pedestal, and neck brace is fixed on mounting base.
Sliding support is made up of air pressure control module fixed support, air pressure control module guide groove, sliding support holder.The below of air pressure control module support connects sliding support holder, is arranged in the sliding support guide groove of mounting base by sliding support by sliding support holder.
It is block in outer ring at air pressure to settle air pressure to block telescopic joint that described air pressure blocks module, the lower end blocking telescopic joint at air pressure arranges carotid artery contact rubber ring, the upper end blocking telescopic joint at air pressure arranges sealing rubber ring, connectivity trachea in sealing rubber ring and air pressure control module is tightly connected, blocking the arranged outside of outer ring at air pressure has air pressure to block outer ring screw thread, and air pressure blocks outer ring screw thread and the air pressure on air pressure control module and blocks module to install female thread identical.
The inside of air pressure control module is air pressure Control Component, air pressure Control Component is arranged in the enclosure, shell is provided with manipulation button, display, be provided with the connector, the air pressure that are connected with connectivity trachea below shell to block module and install female thread and seal washer, air pressure control module is fixed in the air pressure control module guide groove of sliding support by air pressure control module shell hold-doun nut.
The air pressure Control Component of air pressure control module comprises single-chip microcomputer, venting drive circuit, inflation drive circuit, radio communication circuit, air pressure protection module, pressure transducer and amplification and filter circuit, venting drive circuit connects vent valve, inflation drive circuit connects inflator pump, and be tightly connected respectively pressure transducer, vent valve, inflator pump, air pressure of the connectivity trachea of sealing blocks module, air pressure protection module; Single-chip microcomputer with venting drive circuit, inflate drive circuit, amplify and be connected with filter circuit and radio communication circuit.Oximetry wireless communication module in radio communication circuit and radio blood oxygen measurement module realizes radio communication.Single-chip Controlling venting drive circuit drives vent valve venting, control inflation drive circuit drives inflator pump inflation, pressure transducer induction air pressure blocks the air pressure of module, amplify with filter circuit the pressure signal that pressure transducer responds to and carry out filtering by amplifying to it, filtered signal is sent to single-chip microcomputer.
Radio blood oxygen measurement module is made up of wireless measurement mounting seat and radio blood oxygen circuit board.Wireless measurement mounting seat has the loophole of 90 ° and 45 °.Radio blood oxygen circuit board is installed Oximetry single-chip microcomputer, Oximetry wireless communication module, red luminotron, infraluminescence pipe and photodiode.Oximetry single-chip microcomputer carries out light emitting control to red luminotron and infraluminescence pipe, receive the signal of photodiode and carry out signal exchange with Oximetry wireless communication module, Oximetry wireless communication module issues the radio communication circuit of oxygen saturation signal to air pressure control module.
Wireless measurement mounting seat has the red luminotron loophole of 2 45 °, 2 infrared light loopholes and 1 90 ° of photodiode loophole, radio blood oxygen circuit board is installed red luminotron A, red luminotron B, infraluminescence pipe A, infraluminescence pipe B and photodiode.
The method of module and air pressure protection module is blocked be tightly connected respectively pressure transducer, vent valve, inflator pump, air pressure of the connectivity trachea of sealing in air pressure control module, the air pressure of above-mentioned functions module is consistent, makes that the air pressure of pressure transducer blocks module with air pressure, air pressure protection module is equal; Single-chip microcomputer in air pressure control module receives the blood oxygen saturation of radio blood oxygen measurement module by radio communication circuit, when blood oxygen saturation is too low, controls venting drive circuit and drives vent valve venting, make air pressure block module pressure and reduce; Single-chip microcomputer gathers the force value of pressure transducer by the analog-to-digital conversion module of its own band, when finding that pressure is too little, control inflation drive circuit and drive inflator pump inflation, for air pressure blocks module pressurization, when finding that pressure is too large, control venting drive circuit and drive vent valve venting, keep the optimum state of pressure, the pressure change making carotid blood flow block module according to setting value with air pressure controls automatically; Radio blood oxygen measurement module carries out blood oxygen saturation calculating according to the data of photodiode when red light A, infrared light A, red light B, infrared light B luminescence successively, and result of calculation is sent to the radio communication circuit of air pressure control module by Oximetry wireless communication module.
Single Chip Microcomputer (SCM) program control flow in air pressure control module is: after starting, the first step: arrange minimal oxyhemoglobin saturation, most hyperbar value, barometric minimum value, best atmospheric pressure value respectively; Second step: the blood oxygen saturation receiving each radio blood oxygen measurement module; calculate the minimum blood oxygen saturation detected; judge that whether the minimum blood oxygen saturation detected is lower than the minimum blood oxygen saturation arranged; be: drive and abandon the of short duration venting of valve and the beginning step returning second step, no: to enter the 3rd step; 3rd step: read in pressure transducer atmospheric pressure value, judge whether atmospheric pressure value is greater than the most hyperbar value of setting, be: drive the of short duration venting of vent valve and return the beginning step of the 3rd step, no: to judge whether atmospheric pressure value is less than the barometric minimum value of setting, be: drive the of short duration inflation of inflator pump and return the beginning step of the 3rd step, no: to enter the 4th step; 4th step: read in pressure transducer force value, judge whether atmospheric pressure value is greater than the best atmospheric pressure value of setting, no: directly to enter the 5th step, be: drive the of short duration venting of vent valve to enter the 5th step, the 5th step: again read in pressure transducer force value, judge whether atmospheric pressure value is less than the best atmospheric pressure value of setting, no: directly to enter second step, be: drive the of short duration inflation of inflator pump, enter second step, repetitive cycling.Single-chip microcomputer control program flow process in radio blood oxygen measurement module is: after starting, control red luminotron A luminous, 200HZ sample frequency gathers 5 seconds photodiode data, be stored into data set RedDataA, control infraluminescence pipe A luminous, 200HZ sample frequency gathers 5 seconds photodiode data, be stored into data set IRedDataA, control red luminotron B luminous, 200HZ sample frequency gathers 5 seconds photodiode data, be stored into data set RedDataB, control infraluminescence pipe B luminous, 200HZ sample frequency gathers 5 seconds photodiode data, be stored into data set IRedDataB, blood oxygen saturation is calculated according to the data gathered, blood oxygen saturation is wirelessly transmitted to the radio communication circuit of air pressure control module.
The computational process of blood oxygen saturation is: after starting, find out all maximum points of RedDataA, calculate the meansigma methods of all maximum points of RedDataA, be stored into variable MaxRedA, find out all minimum points of RedDataA, calculate the meansigma methods of all minimum points of RedDataA, be stored into variable MinRedA; Find out all maximum points of IRedDataA, calculate the meansigma methods of all maximum points of IRedDataA, be stored into variable MaxIRedA, find out all minimum points of IRedDataA, calculate the meansigma methods of all minimum points of IRedDataA, be stored into variable MinIRedA; Find out all maximum points of RedDataB, calculate the meansigma methods of all maximum points of RedDataB, be stored into variable MaxRedB, find out all minimum points of RedDataB, calculate the meansigma methods of all minimum points of RedDataB, be stored into variable MinRedB; Find out all maximum points of IRedDataB, calculate the meansigma methods of all maximum points of IRedDataB, be stored into variable MaxIRedB, find out all minimum points of IRedDataB, calculate the meansigma methods of all minimum points of IRedDataB, be stored into variable MinIRedB; By computing formula K=(MaxRedA-MinRedA) (MaxIRedB-MinIRedB)/(MaxIRedA-MinIRedA)/(MaxRedB-MinRedB) design factor K value, judge whether K value is greater than 1, be: calculate DelRed by following computational methods, DelIRed, MeanRed, MeanIRed:DelRed=MaxRedA-MinRedA, DelIRed=MaxIRedA-MinIRedA, the meansigma methods of MeanRed=RedDataA, the meansigma methods of MeanIRed=RedIDataA; No: to calculate DelRed by following computational methods, DelIRed, MeanRed, MeanIRed:DelRed=MaxRedB-MinRedB, the meansigma methods of DelIRed=MaxIRedB-MinIRedB, MeanRed=RedDataB, the meansigma methods of MeanIRed=RedIDataB, finally obtain blood oxygen saturation, i.e. blood oxygen saturation=X+Y (DelRed × MeanIRed/MeanRed/DelIRed; Wherein, the value of X, Y by the blood of the different individual of extraction two, measure by there being the chemical blood oxygen measuring device of wound extract oximetry value in two human bloods, measure simultaneously and calculate the DelRed of two people, DelIRed, MeanRed, MeanIRed, and set up with X, Y is two linear equation in two unknowns of variable, solves linear equation in two unknowns and obtains X, the value of Y.
In the computational process of blood oxygen saturation, the method finding out all maximum points of data is: find and judge 30 sampled points before and after data, if the data of 30 sampled points in front and back are all less than or equal to the data of this sampled point, then judge that this point is maximum, if there are two maximum points in 50 sampled points, these two maximum points are only calculated one by this, and another is deleted.
The method finding out all minimum points of data is: find and judge 30 sampled points before and after data, if the data of 30 sampled points in front and back are all more than or equal to the data of this sampled point, then judge that this point is minimum, if there are two minimum points in 50 sampled points, then these two minimum points are only calculated one, another is deleted.
Good effect of the present invention is: 1 simplifies structural design, adopts radio communication, removes unnecessary connecting line, eliminates doctor in operation process because of interference that connecting line is too much; 2 adopt brand-new design, science more, and more reliably, blood flow controls more accurate, more personalized; 3 adopt multiple spot Oximetry pattern, and measurement point is determined as required, and make control and protection more effective, surgical effect is better, is reduced to minimum to the infringement of patient.
Four, accompanying drawing explanation
Fig. 1 is that this carotid artery flow blocks control device structural representation.
Fig. 2 is mounting base structural representation.
Fig. 3 is sliding support structural representation.
Fig. 4 is that air pressure blocks modular structure generalized section, and wherein, 15 air pressure block outer ring, and 17 air pressure block outer ring screw thread, and 13 carotid artery contact rubber ring display sections, 14 air pressure block telescopic joint, 16 sealing rubber rings do not do and analyse and observe.
Fig. 5 is air pressure control module shell schematic diagram.
Fig. 6 is air pressure control module circuit unit schematic diagram.
Fig. 7 is air pressure protection module structural representation.
Fig. 8 is radio blood oxygen measurement module appearance schematic diagram.
Fig. 9 is radio blood oxygen measurement module mounting seat end face schematic diagram.
Figure 10 is radio blood oxygen measurement module mounting seat side schematic view.
Figure 11 radio blood oxygen measurement module electrical block diagram.
Figure 12 is red luminotron in radio blood oxygen measurement module, infraluminescence pipe, photodiode circuit figure.In figure, D1 red luminotron A, D2 red luminotron B, D4 infraluminescence pipe B, D5 infraluminescence pipe B, U1 photodiode.
Figure 13 is single-chip microcomputer in air pressure Control Component in air pressure control module, radio blood oxygen measurement module and peripheral circuit figure thereof.
Figure 14 is power supply and the pressure measurement circuitry figure of air pressure Control Component in air pressure control module.
Figure 15 is the keyboard circuit figure of air pressure Control Component in air pressure control module.
Figure 16 is the charactron module circuit diagram of display circuit.
Figure 17 is the circuit diagram of the radio communication circuit in air pressure control module in air pressure Control Component, the wireless communication module in radio blood oxygen measurement module.
Figure 18 is the control flow chart that air pressure controls.
Figure 19 is radio blood oxygen measurement procedure figure.
Figure 20 is that blood oxygen saturation calculates FB(flow block).
In figure, 1 mounting base, 2 sliding supports, 3 air pressure block module, 4 air pressure control modules, 5 radio blood oxygen measurement modules, 6 mounting base pedestals, 7 neck braces, 8-1, 8-2 sliding support guide groove, 9 air pressure control module fixed supports, 10 air pressure control module guide grooves, 11-1, 11-2 sliding support holder, 12-1, 12-2, 12-3, 12-4 sliding support hold-doun nut, 13 carotid artery contact rubber rings, 14 air pressure block telescopic joint, 15 air pressure block outer ring, 16 sealing rubber rings, 17 air pressure block outer ring screw thread, 18 air pressure block module and install screw thread, 19 seal washers, 20 trachea installation places, 21-1, 21-2 air pressure control module shell hold-doun nut, 22 manipulation buttons, 23 display, 24 single-chip microcomputers, 25 amplify and filter circuit, 26 venting drive circuits, 27 vent valves, 28 pressure transducers, 29 air pressure protection modules, 30 inflator pumps, 31 inflation drive circuits, 32 connectivity tracheas, 33 radio communication circuits, 34 protection tracheas, 35 protection rubber rings, 36 radio blood oxygen measuring circuit plates, 37 radio blood oxygens measure mounting seat, 38 red luminotron A loopholes, 39 infraluminescence pipe A loopholes, 40 red luminotron B loopholes, 41 infraluminescence pipe B loopholes, 42 photodiode loopholes, 43 give out light pipe A loophole inclination angle, 44 photodiode loophole inclination angles, 46 luminous tube B loophole inclination angles, 47 red luminotron A, 48 infraluminescence pipe A, 49 red luminotron B, 50 infraluminescence pipe B, 51 photodiodes, 52 Oximetry single-chip microcomputers, 53 Oximetry wireless communication modules.
Five, detailed description of the invention
Drawings illustrate embodiments of the invention.
See accompanying drawing 1-6.
Control device is blocked module 3, air pressure control module 4 and radio blood oxygen measurement module 5 formed by mounting base 1, sliding support 2, air pressure.Sliding support 2 is arranged on mounting base 1, and air pressure control module 4 is arranged in the air pressure control module guide groove 10 of sliding support 2.Air pressure blocks module 3 and to be placed in below air pressure control module 4 and to be connected as a single entity, and radio blood oxygen measurement module 5 arranges n as required.Be provided with single-chip microcomputer in air pressure control module 4 automatically to control air pressure, carry out pressurizeing and reducing pressure, be provided with radio communication circuit and radio blood oxygen measurement module realizes transmission of wireless signals.Be provided with single-chip microcomputer in radio blood oxygen measurement module 5 and carry out Oximetry control, be provided with wireless communication module and air pressure control module 4 realizes transmission of wireless signals.
Mounting base 1 is made up of mounting base pedestal 6, neck brace 7 and sliding support guide groove 8, and sliding support guide groove 8-1,8-2 are arranged at the both sides of mounting base pedestal, and neck brace 7 to be fixed on mounting base on 1.Mounting base pedestal is used for fixing neck brace and sliding support guide groove, and fixes sliding support by sliding support guide groove.Neck brace is used for supporting cervical region in diagnosis and treatment, and sliding support guide groove is used for slip and the location of sliding support.Sliding support 2 is made up of air pressure control module fixed support 9, air pressure control module guide groove 10, sliding support holder 11, the below of air pressure control module support 9 connects sliding support holder 11-1,11-2, is arranged in sliding support guide groove 8-1,8-2 of mounting base 1 by sliding support 2 by sliding support holder 11-1,11-2.The while that sliding support can sliding and be fixed on mounting base on mounting base, sliding support slides and mounting bracket for air pressure control module provides.Air pressure control module fixed support is used for fixing air pressure control module.Air pressure control module guide groove 10 makes air pressure control module can move along guide groove.Sliding support holder is connected with air pressure control module fixed support, is arranged in sliding support guide groove, and air pressure control module fixed support can be moved along sliding support guide groove.Sliding support hold-doun nut 12-1,12-2,12-3,12-4 are for being fastened on sliding support guide groove by air pressure control module fixed support, when sliding support hold-doun nut is tightened, make air pressure control module fixed support be positioned at the fixed position of sliding support guide groove, can not slide again.
It is block in outer ring 15 at air pressure to settle air pressure to block telescopic joint 14 that air pressure blocks module 3, the lower end blocking telescopic joint 14 at air pressure arranges carotid artery contact rubber ring 13, the upper end blocking telescopic joint 14 at air pressure arranges sealing rubber ring 16, air pressure blocks module 3 and is tightly connected with the connectivity trachea 32 in air pressure control module, blocking the arranged outside of outer ring 15 at air pressure has air pressure to block outer ring screw thread 17, and air pressure blocks outer ring screw thread 17 and the air pressure on air pressure control module and blocks module and install female thread 18 and match.
Air pressure blocks module under the control of air pressure, makes air pressure block telescopic joint and stretches, control carotid pressure.Carotid artery contact rubber ring is be arranged on the rubber ring on air pressure blocking-up telescopic joint, for contacting carotid artery, increases skin-friendliness; It is cylindrical that air pressure blocks telescopic joint 14, under the influence of air pressure, can to block in outer ring flexible at air pressure, for increasing or minimizing to carotid pressure.It is cylindrical shape that air pressure blocks outer ring 15, and air pressure blocking-up telescopic joint can block in outer ring at air pressure and reciprocate.Sealing rubber ring 16 is enclosed within air pressure and blocks on telescopic joint, and blocking telescopic joint at guarantee air pressure can block under the prerequisite of flexible movement in outer ring at air pressure, makes the pressure drag telescopic joint that breaks block with air pressure that outer ring is seamless to be contacted, air pressure blocking-up outer ring inside and outside air seal.It is outer silk screw thread that air pressure blocks outer ring screw thread, for being arranged on the corresponding internal thread screw thread of air pressure control module.
The inside of air pressure control module 4 is air pressure Control Component, air pressure Control Component is arranged in the enclosure, shell is provided with manipulation button 22, display 23, be provided with the connector 20 that is connected with connectivity trachea 32 and air pressure below shell to block module and install internal thread screw thread 18 and seal washer 19, air pressure control module is fixed in the air pressure control module guide groove 10 of sliding support 2 by air pressure control module shell hold-doun nut 21-1,21-2.
It is that internal thread screw thread and air pressure block outer ring threaded engagement that air pressure control module installs screw thread, is fixed on air pressure control module for air pressure is blocked module.Seal washer is used for the sealing that air pressure blocks model calling air pressure control module.After air pressure blocking-up module is connected with air pressure control module, its junction only has a gas outlet, i.e. trachea installation place 20.This gas outlet is used for being connected with the gas outlet of pneumatic control circuits.Air pressure control module shell hold-doun nut 21-1,21-2 are for being fixed on sliding support by air pressure control module, manipulation button is for arranging the controling parameters of pneumatic control circuits, and display is for showing blood oxygen measured by set controling parameters and circuit and pneumatic parameter.
The air pressure Control Component of air pressure control module comprises single-chip microcomputer 24, venting drive circuit 26, inflation drive circuit 31, radio communication circuit 33, air pressure protection module 29, pressure transducer 28, amplifies and filter circuit 25, venting drive circuit 26 connects vent valve 27, inflation drive circuit 31 connects inflator pump 30, and be tightly connected respectively pressure transducer 28, vent valve 27, inflator pump 30, air pressure of the connectivity trachea 32 of sealing blocks module 3, air pressure protection module 29; Single-chip microcomputer 24 with venting drive circuit 26, inflate drive circuit 31, amplify and be connected with filter circuit 25 and radio communication circuit 33.Single-chip microcomputer 24 control venting drive circuit 26 drive vent valve 27 to exit, control inflation drive circuit 31 drive inflator pump 30 to inflate.
Air pressure Control Component is used for controlling according to blood oxygenation measurement the air pressure that air pressure blocks module.Block module, air pressure protection module with sealing trachea Bonding pressure sensor, vent valve, inflator pump, air pressure, the air pressure of above-mentioned functions module be consistent, pressure transducer air pressure blocks module with air pressure, air pressure protection module is equal.Single-chip microcomputer receives the blood oxygen saturation of radio blood oxygen measurement module by radio communication circuit, when blood oxygen saturation is too low, controls venting drive circuit and drives vent valve, make air pressure block module pressure and reduce.Single-chip microcomputer gathers the force value of pressure transducer by the analog-to-digital conversion module of its own band, when finding that pressure is too little, controlling inflation drive circuit and driving inflator pump inflation, for air pressure blocks module pressurization.Venting drive circuit, under the control of single-chip microcomputer, drives vent valve venting.Vent valve, under the driving of venting drive circuit, is exitted by Single-chip Controlling, reduces air pressure and blocks module air pressure.Amplification and filter circuit amplify the pressure signal that pressure transducer is responded to, and carry out filtering to it.Pressure transducer induction air pressure blocks the air pressure of module.Air pressure protection module is for preventing air pressure too high and providing air pressure to protect.Inflator pump, under the driving of inflation drive circuit, is inflated by Single-chip Controlling, increases air pressure and blocks module air pressure.Inflation drive circuit, under Single-chip Controlling, drives inflator pump inflation.In this example, connectivity trachea is the sealing trachea with 5 connectors, blocks module, air pressure protection module, make each module air pressure consistent for the pressure transducer that is tightly connected, vent valve, inflator pump, air pressure.Pressure transducer 28 induction air pressure blocks the air pressure of module 3, and amplifying pressure signal that pressure transducer responds to filter circuit 25 by amplifying and carry out filtering to it, filtered signal is sent to single-chip microcomputer 24.
See accompanying drawing 7.Air pressure protection module 29 is made up of protection trachea 34 and protection rubber ring 35.Protection trachea is used for connecting trachea and protection rubber ring, and protection rubber ring sleeve is on protection trachea.When air pressure blocking-up module air pressure is less than the protection air pressure of protection rubber ring, protection rubber ring sleeve keeps the sealing to protection trachea.When air pressure blocking-up module air pressure is greater than the protection air pressure of protection rubber ring, protection rubber ring can leak gas, and makes air pressure block module air pressure and can not exceed the protection value protecting rubber ring.
See accompanying drawing 13.Single-chip microcomputer in air pressure control module in air pressure Control Component, radio blood oxygen measurement module and peripheral circuit figure thereof.MSP430F135 selected by single-chip microcomputer, and American TI Company is produced, and J7 is electromagnetic valve, and Q1 is driving circuit for electromagnetic valve, J8 is inflator pump, and Q2 is inflator pump drive circuit, and J2 is the emulation interface of single-chip microcomputer, and S_R is reset key, peripheral circuit is reset circuit, and Y3, Y4 are crystal oscillator.
Figure 14 is power supply and the pressure measurement circuitry figure of air pressure Control Component in air pressure control module.In figure, LM117 is power conversion chip, and MPXV5050 is the pressure transducer that motorola company produces, and LM324 is operational amplifier, and its peripheral circuit forms amplification and filter circuit.
Figure 15 is the Keysheet module in manipulation button circuit, and Figure 16 is display circuit, adopts the display of charactron module.
See accompanying drawing 17.Radio communication circuit 33 in air pressure control module realizes radio communication with the Oximetry wireless communication module 53 in radio blood oxygen measurement module 5.The circuit of the wireless communication module in the radio communication circuit in air pressure control module in air pressure Control Component and radio blood oxygen measurement module have employed identical wireless transport module, in figure, U9:CC2520: wireless transmission chip is that TEXAS INSTRUMENTS company of the U.S. produces, U10:CC2591: wireless transmission front-end chip is that TEXASINSTRUMENTS company of the U.S. produces.
See accompanying drawing 8-12.Radio blood oxygen measurement module 5 is made up of wireless measurement mounting seat 37 and radio blood oxygen circuit board 36.Wireless measurement mounting seat 37 has the loophole of 90 ° and 45 °, the red luminotron loophole 38,40 of 2 45 °, 2 infrared light loopholes, 39,41 and 1 90 ° of photodiode loopholes 42.Radio blood oxygen circuit board 36 is installed Oximetry single-chip microcomputer 52, Oximetry wireless communication module 53, red luminotron A47, red luminotron B49, infraluminescence pipe A48, infraluminescence pipe B50, photodiode 51.
Figure 12 is red luminotron in radio blood oxygen measurement module, infraluminescence pipe, photodiode circuit figure.In figure, D1 red luminotron A, D2 red luminotron B, D4 infraluminescence pipe B, D5 infraluminescence pipe B, U1 photodiode.
Oximetry single-chip microcomputer 52 pairs of red luminotrons and infraluminescence pipe carry out light emitting control, receive the signal of photodiode and carry out signal exchange with Oximetry wireless communication module 53, Oximetry wireless communication module 53 issues the radio communication circuit 33 of oxygen saturation signal to air pressure control module 4.
See accompanying drawing 13,17.Single-chip microcomputer in radio blood oxygen measurement module and peripheral circuit thereof have employed the single-chip microcomputer identical with pneumatic control circuits module.Radio communication circuit have employed the radio communication circuit identical with pneumatic control circuits module.
Oximetry single-chip microcomputer 52 pairs of red luminotrons and infraluminescence pipe carry out light emitting control, receive the signal of photodiode and carry out signal exchange with Oximetry wireless communication module 53, Oximetry wireless communication module 53 issues the radio communication circuit 33 of oxygen saturation signal to air pressure control module 4.
See accompanying drawing 18,19,20.
Carotid artery flow blocks the control method of control device, adopt and to be tightly connected respectively pressure transducer, vent valve, inflator pump, air pressure blocking-up module and the method for air pressure protection module with the connectivity trachea of sealing in air pressure control module, the air pressure of above-mentioned functions module is consistent, makes that the air pressure of pressure transducer blocks module with air pressure, air pressure protection module is equal; Single-chip microcomputer in air pressure control module receives the blood oxygen saturation of radio blood oxygen measurement module by radio communication circuit, when blood oxygen saturation is too low, controls venting drive circuit and drives vent valve venting, make air pressure block module pressure and reduce.Single-chip microcomputer gathers the force value of pressure transducer by the analog-to-digital conversion module of its own band, when finding that pressure is too little, control inflation drive circuit and drive inflator pump inflation, for air pressure blocks module pressurization, when finding that pressure is too large, control venting drive circuit and drive vent valve venting, keep the optimum state of pressure, the pressure change making carotid blood flow block module according to setting value with air pressure controls automatically.Radio blood oxygen measurement module carries out the calculating of blood oxygen saturation according to the data of photodiode when red light A, infrared light A, red light B, infrared light B luminescence successively, and result of calculation is sent to the radio communication circuit of air pressure control module by wireless communication module.
Single Chip Microcomputer (SCM) program control flow in air pressure control module is: the first step: arrange minimal oxyhemoglobin saturation, most hyperbar value, barometric minimum value, best atmospheric pressure value respectively; Second step: the blood oxygen saturation receiving each radio blood oxygen measurement module; calculate the minimum blood oxygen saturation detected; judge that whether the minimum blood oxygen saturation detected is lower than the minimum blood oxygen saturation arranged; be: drive and abandon the of short duration venting of valve and the beginning step returning second step, no: to enter the 3rd step; 3rd step: read in pressure transducer atmospheric pressure value; judge whether atmospheric pressure value is greater than the most hyperbar value of setting; be: drive the of short duration venting of vent valve and return the beginning step of the 3rd step; no: to judge whether atmospheric pressure value is less than the barometric minimum value of setting; be: drive the of short duration inflation of inflator pump and return the beginning step of the 3rd step, no: to enter the 4th step; 4th step: read in pressure transducer force value, judge whether atmospheric pressure value is greater than the best atmospheric pressure value of setting, no: directly to enter the 5th step, be: drive the of short duration venting of vent valve to enter the 5th step, the 5th step: again read in pressure transducer force value, judge whether atmospheric pressure value is less than the best atmospheric pressure value of setting, no: directly to enter second step, be: drive the of short duration inflation of inflator pump, enter second step, repetitive cycling.
Single-chip microcomputer control program flow process in radio blood oxygen measurement module is: after starting, control red luminotron A luminous, 200HZ sample frequency gathers 5 seconds photodiode data, be stored into data set RedDataA, control infraluminescence pipe A luminous, 200HZ sample frequency gathers 5 seconds photodiode data, be stored into data set IRedDataA, control red luminotron B luminous, 200HZ sample frequency gathers 5 seconds photodiode data, be stored into data set RedDataB, control infraluminescence pipe B luminous, 200HZ sample frequency gathers 5 seconds photodiode data, be stored into data set IRedDataB, blood oxygen saturation is calculated according to the data gathered, blood oxygen saturation is wirelessly transmitted to the radio communication circuit of air pressure control module.
When blood oxygen saturation calculates, carry out according to the flow process of Figure 20.After beginning, find out all maximum points of RedDataA, calculate the meansigma methods of all maximum points of RedDataA, be stored into variable MaxRedA, find out all minimum points of RedDataA, calculate the meansigma methods of all minimum points of RedDataA, be stored into variable MinRedA; Find out all maximum points of IRedDataA, calculate the meansigma methods of all maximum points of IRedDataA, be stored into variable MaxIRedA, find out all minimum points of IRedDataA, calculate the meansigma methods of all minimum points of IRedDataA, be stored into variable MinIRedA; Find out all maximum points of RedDataB, calculate the meansigma methods of all maximum points of RedDataB, be stored into variable MaxRedB, find out all minimum points of RedDataB, calculate the meansigma methods of all minimum points of RedDataB, be stored into variable MinRedB; Find out all maximum points of IRedDataB, calculate the meansigma methods of all maximum points of IRedDataB, be stored into variable MaxIRedB, find out all minimum points of IRedDataB, calculate the meansigma methods of all minimum points of IRedDataB, be stored into variable MinIRedB; By computing formula K=(MaxRedA-MinRedA) (MaxIRedB-MinIRedB)/(MaxIRedA-MinIRedA)/(MaxRedB-MinRedB) design factor K value.Judge whether K value is greater than 1, is: calculate DelRed, DelIRed by following computational methods, MeanRed, MeanIRed:DelRed=MaxRedA-MinRedA, DelIRed=MaxIRedA-MinIRedA, the meansigma methods of MeanRed=RedDataA, the meansigma methods of MeanIRed=RedIDataA; No: to calculate DelRed by following computational methods, DelIRed, MeanRed, MeanIRed:DelRed=MaxRedB-MinRedB, the meansigma methods of DelIRed=MaxIRedB-MinIRedB, MeanRed=RedDataB, the meansigma methods of MeanIRed=RedIDataB, finally obtain blood oxygen saturation, i.e. blood oxygen saturation=X+Y (DelRed × MeanIRed/MeanRed/DelIRed.Wherein, the value of X, Y passes through the blood of the different individual of extraction two, by there being the oximetry value in the chemical blood oxygen measuring device measurement extraction of wound two human bloods, measure simultaneously and calculate the DelRed of two people, DelIRed, MeanRed, MeanIRed, and set up with X, Y is two linear equation in two unknowns of variable, solves linear equation in two unknowns and obtains X, the value of Y.Finally obtain blood oxygen saturation.
Find out the method for all maximum points of data: find and judge 30 sampled points before and after data, if the data of 30 sampled points in front and back are all less than or equal to the data of this sampled point, then judge that this point is maximum.If there are two maximum points in 50 sampled points, these two maximum points are only calculated one by this, and another is deleted.
Find out the method for all minimum points of data: find and judge 30 sampled points before and after data, if the data of 30 sampled points in front and back are all more than or equal to the data of this sampled point, then judge that this point is minimum.If there are two minimum points in 50 sampled points, then these two minimum points are only calculated one, another is deleted.
Claims (5)
1. a carotid artery flow blocks control device, it is characterized in that: control device is by mounting base (1), sliding support (2), air pressure blocks module (3), air pressure control module (4) and radio blood oxygen measurement module (5) are formed, sliding support (2) is arranged on mounting base (1), air pressure control module (4) is arranged in the air pressure control module guide groove (10) of sliding support (2), air pressure blocks module (3) and is placed in air pressure control module (4) below and is connected as a single entity, radio blood oxygen measurement module (5) arranges n as required, be provided with single-chip microcomputer in air pressure control module (4) automatically to control air pressure, carry out pressurizeing and reducing pressure, be provided with radio communication circuit and radio blood oxygen measurement module realizes transmission of wireless signals,
Be provided with single-chip microcomputer in radio blood oxygen measurement module (5) and carry out Oximetry control, be provided with wireless communication module and air pressure control module (4) realizes transmission of wireless signals.
2. carotid artery flow as claimed in claim 1 blocks control device, it is characterized in that: described mounting base (1) is made up of mounting base pedestal (6), neck brace (7) and sliding support guide groove (8), sliding support guide groove (8-1,8-2) is arranged at the both sides of installing floor board pedestal, and neck brace (7) is fixed on (1) on mounting base;
Described sliding support (2) is made up of air pressure control module fixed support (9), air pressure control module guide groove (10), sliding support holder (11), the below of air pressure control module support (9) connects sliding support holder (11-1,11-2), is arranged in the sliding support guide groove (8-1,8-2) of mounting base (1) by sliding support holder (11-1,11-2) by sliding support (2);
It is block in outer ring (15) at air pressure to settle air pressure to block telescopic joint (14) that described air pressure blocks module (3), the lower end blocking telescopic joint (14) at air pressure arranges carotid artery contact rubber ring (13), the upper end blocking telescopic joint (14) at air pressure arranges sealing rubber ring (16), the arranged outside blocking outer ring (15) at air pressure has air pressure to block outer ring screw thread (17), and air pressure blocks outer ring screw thread (17) and blocks module with the air pressure on air pressure control module and install female thread (18) and match.
3. carotid artery flow as claimed in claim 1 blocks control device, it is characterized in that: the inside of described air pressure control module (4) is air pressure Control Component, air pressure Control Component is arranged in the enclosure, shell is provided with manipulation button (22), display (23), be provided with the connector (20) that is connected with connectivity trachea (32) and air pressure below shell to block module female thread (18) and seal washer (19) are installed, air pressure control module is by air pressure control module shell hold-doun nut (21-1, 21-2) be fixed in the air pressure control module guide groove (10) of sliding support (2),
The air pressure Control Component of described air pressure control module comprises single-chip microcomputer (24), venting drive circuit (26), inflation drive circuit (31), radio communication circuit (33), air pressure protection module (29), pressure transducer (28), amplify and filter circuit (25), venting drive circuit (26) connects vent valve (27), inflation drive circuit (31) connects inflator pump (30), the connectivity trachea (32) of sealing is tightly connected pressure transducer (28) respectively, vent valve (27), inflator pump (30), connecting interface (20), air pressure protection module (29), single-chip microcomputer (24) with venting drive circuit (26), inflate drive circuit (31), amplify and be connected with filter circuit (25) and radio communication circuit (33),
Radio communication circuit (33) realizes radio communication with the Oximetry wireless communication module (53) in radio blood oxygen measurement module (5), and single-chip microcomputer (24) control venting drive circuit (26) driving vent valve (27) is exitted, control to inflate drive circuit (31) drives inflator pump (30) to inflate;
Pressure transducer (28) induction air pressure blocks the air pressure of module (3), amplifying pressure signal that pressure transducer responds to filter circuit (25) by amplifying and carry out filtering to it, filtered signal is sent to single-chip microcomputer (24).
4. carotid artery flow as claimed in claim 1 blocks control device, it is characterized in that: described radio blood oxygen measurement module (5) is made up of wireless measurement mounting seat (37) and radio blood oxygen circuit board (36), wireless measurement mounting seat (37) has the loophole of 90 ° and 45 °; Radio blood oxygen circuit board (36) is upper installs Oximetry single-chip microcomputer (52), Oximetry wireless communication module (53), red luminotron, infraluminescence pipe and photodiode (51), Oximetry single-chip microcomputer (52) carries out light emitting control to red luminotron and infraluminescence pipe, receive the signal of photodiode and carry out signal exchange with Oximetry wireless communication module (53), Oximetry wireless communication module (53) issues the radio communication circuit (33) of oxygen saturation signal to air pressure control module (4).
5. carotid artery flow as claimed in claim 4 blocks control device, it is characterized in that: loophole wireless measurement mounting seat (37) having 90 ° and 45 ° has the red luminotron loophole (38,40) of 2 45 °, 2 infrared light loopholes (39,41) and 1 90 ° photodiode loopholes (42), radio blood oxygen circuit board (36) is upper installs red luminotron A (47), red luminotron B (49), infraluminescence pipe A (48), infraluminescence pipe B (50), photodiode (51).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103876803B (en) * | 2014-04-14 | 2016-01-20 | 中国人民解放军第三军医大学第二附属医院 | Femoral artery compressor |
| CN104799903B (en) * | 2015-05-13 | 2017-09-19 | 程孝惠 | Intelligent artery-compression device |
| CN107046275B (en) * | 2017-04-06 | 2019-05-24 | 广州龙之杰科技有限公司 | A kind of Medical Devices air pressure duplicate protection system and method |
| CN109044472B (en) * | 2018-10-08 | 2020-11-03 | 范军 | Intelligent pressing hemostasis device for cardiology department |
| CN111481256A (en) * | 2020-05-13 | 2020-08-04 | 白银市第一人民医院 | Hemostasis device is pressed to angiocardiography postoperative |
| CN112168276A (en) * | 2020-09-15 | 2021-01-05 | 深圳市理邦精密仪器股份有限公司 | Air pressure hemostasis control method and air pressure hemostasis equipment |
| CN112617945A (en) * | 2020-11-23 | 2021-04-09 | 中国人民解放军联勤保障部队第九二〇医院 | Carotid artery compression hemostasis frame |
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| CN2068379U (en) * | 1989-12-16 | 1991-01-02 | 天津市肿瘤医院 | Constriction device for neck aorta |
| CN2401152Y (en) * | 1999-12-10 | 2000-10-18 | 陕西省西京医院 | Extrinsic carotid blood flow blocking apparatus |
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