CN1623526A - Deep vein embolus preventing instrument - Google Patents
Deep vein embolus preventing instrument Download PDFInfo
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- CN1623526A CN1623526A CN 200410073431 CN200410073431A CN1623526A CN 1623526 A CN1623526 A CN 1623526A CN 200410073431 CN200410073431 CN 200410073431 CN 200410073431 A CN200410073431 A CN 200410073431A CN 1623526 A CN1623526 A CN 1623526A
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- intake valve
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- 210000003462 vein Anatomy 0.000 title claims description 8
- 208000005189 Embolism Diseases 0.000 title claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 14
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 206010051055 Deep vein thrombosis Diseases 0.000 abstract description 11
- 206010047249 Venous thrombosis Diseases 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003146 anticoagulant agent Substances 0.000 description 3
- 229940127219 anticoagulant drug Drugs 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 206010062713 Haemorrhagic diathesis Diseases 0.000 description 1
- 208000018262 Peripheral vascular disease Diseases 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000000172 allergic effect Effects 0.000 description 1
- 208000010668 atopic eczema Diseases 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 208000031169 hemorrhagic disease Diseases 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000000554 physical therapy Methods 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000007631 vascular surgery Methods 0.000 description 1
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Abstract
A medical instrument for preventing the deep venous thrombosis (DVT) is composed of a controller consisting of embedded single-chip microprocessor, pressure sensors, interface circuit and software and a pneumatic system with 3 air bags, air inlet valves and air outlet valves. Said 3 air bags are regularly inflated and air-released to apply a gradient pressure to the legs of a patient, so preventing DVT.
Description
Technical field
The present invention relates to physical therapy device, especially relate to a kind of deep vein embolus preventing instrument.
Background technology
Deep venous thrombosis (Deep Vein Thrombosis, DVT) form be owing to thrombus obstruction certain blood backflow obstacle that props up dark vein hyperamization bolt distally cause and organize blood stasis.Along with developing rapidly of vascular surgery specialty, the applying of multiple diagnosis and treatment technology, the recall rate of DVT increases, and becomes commonly encountered diseases, frequently-occurring disease in the peripheral vascular disease, and the trend that rises is year by year arranged.The effective measures of prevention DVT mainly are anticoagulants at present.The application of anticoagulant exists bleeding tendency, gastrointestinal side effect and allergic problem, especially to the patient of advanced age, pulmonary insufficiency Ying Shenyong more.
Summary of the invention
The object of the present invention is to provide a kind of deep vein embolus preventing instrument, utilize mechanical means (elastic pressure) the prevention DVT of periodically inflation pressurization, thereby eliminate by the anticoagulant treatment side effect that DVT produced.
Technical scheme:
The technical solution adopted for the present invention to solve the technical problems is: it comprises control circuit and pneumatic means, wherein:
1) control circuit: comprise microcontroller system circuit, keyboard control circuit, display control circuit, buzzer alarm circuit, EEPROM memory circuit, power supply processing circuit, A/D convertor circuit, isolated drive circuit, signal amplification circuit, sensor interface circuitry; Microcontroller system circuit is connected with isolated drive circuit with keyboard control circuit, display control circuit, buzzer alarm circuit, EEPROM memory circuit, power supply processing circuit, A/D convertor circuit respectively with I/O mouth pin by the control pin, and A/D convertor circuit is connected with sensor interface circuitry with signal amplification circuit successively;
2) pneumatic means: comprise three independently gas circuits, each road all has intake valve, vent valve, four-way connection, pressure transducer and air bag; Four-way connection is connected with intake valve, vent valve, pressure transducer and air bag respectively, and intake valve and vent valve connect isolated drive circuit respectively, and pressure transducer is connected with voltage amplifier circuit through sensor interface circuitry, connects mini air pump after three intake valve parallel connections.
The useful effect that the present invention has is:
After the present invention started, the control core read each key assignments of keyboard earlier, sets parameters.Read the digital value after pressure transducer is changed again, judge by internal control, the output control signal is controlled intake valve, vent valve and is carried out action according to certain rules, make three air bags fill, exit by rule, patient's lower limbs is applied the pressure of certain gradient, to reach the purpose of medically preventing DVT.This apparatus structure is simple, low cost of manufacture, stable performance, intelligent degree height.
Description of drawings
Fig. 1 is a population structure block diagram of the present invention;
Fig. 2 is a pneumatic means structure principle chart of the present invention;
Fig. 3 is single channel gas circuit decomposition of movement figure of the present invention;
Fig. 4 is the main program block diagram of control circuit of the present invention;
Fig. 5 is control circuit figure of the present invention.
Among the figure: 1. mini air pump, 2. intake valve, 3. vent valve, 4. four-way connection, 5. pressure transducer, 6. air bag, 7. sensor interface circuitry, 8. signal amplification circuit, 9.AD change-over circuit, 10. driving buffer circuit, 11. microcontroller system circuits, 12. keyboard control circuits, 13. display control circuit, 14. buzzer alarm circuit, 15.EEPROM memory circuit, 16. power supply processing circuits.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, the present invention includes control circuit and pneumatic means, wherein:
1) control circuit: comprise microcontroller system circuit 11, keyboard control circuit 12, display control circuit 13, buzzer alarm circuit 14, EEPROM memory circuit 15, power supply processing circuit 16, A/D convertor circuit 9, isolated drive circuit 10, signal amplification circuit 8, sensor interface circuitry 7; Microcontroller system circuit 11 is connected with keyboard control circuit 12, display control circuit 13, buzzer alarm circuit 14, EEPROM memory circuit 15, power supply processing circuit 16, A/D convertor circuit 9 and isolated drive circuit 10 respectively with I/O mouth pin by the control pin, and A/D convertor circuit 9 is connected with sensor interface circuitry 7 with signal amplification circuit 8 successively;
2) pneumatic means: comprise three independently gas circuits, each road all has intake valve 2, vent valve 3, four-way connection 4, pressure transducer 5 and air bag 6; Four-way connection 4 is connected with intake valve 2, vent valve 3, pressure transducer 5 and air bag 6 respectively, intake valve 2 and vent valve 3 connect isolated drive circuit 10 respectively, pressure transducer 5 is connected with voltage amplifier circuit 8 through sensor interface circuitry 7, connects mini air pump 1 after three intake valve 2 parallel connections.
Described microcontroller system circuit 11 adopts AT89C52, AT89C2051 or AT89C51; Keyboard control circuit 12 has 4 buttons, adopts 2 * 2 structures, and line and alignment directly insert the P14～P17 mouth of single-chip microcomputer; Display control circuit 13 adopts 6 LED to show that dynamically single-chip microcomputer P24～P26 inserts 3～8 decoder 74LS138 inputs, exports 6 road useful signals and amplifies through reverser 74LS14 and transistor, connects LED as the position signal; P20～the P23 of single-chip microcomputer inserts 4 lines-7 segment decoders/driver 74LS247, exports 7 road signals and connects LED as segment encode; Buzzer alarm circuit 14 its buzzers directly are connected with the P06 of single-chip microcomputer by Voltage stabilizing module 7805 power supplies; EEPROM memory circuit 15 is X25045, adopts this chip standard circuit; Power supply processing circuit 16 employing filtered diode and Voltage stabilizing module 7824, Voltage stabilizing module 7805, Voltage stabilizing module 7905, Voltage stabilizing module LM336 provide power supply, and adopt the LM324 circuit to reduce voltage, for AD620 provides reference power source; A/D convertor circuit 9 is AD7706, and adopts this chip standard circuit; Isolated drive circuit 10 is single-chip microcomputer P00～P05 process isolating chip TLP521-2, controls intake valve, the vent valve on each road again through the chip ULN2003 that overdrives; Signal amplification circuit 8 adopts AD620 and adopts this chip standard circuit; Sensor interface circuitry 7 its power supplys are provided by regulated power supply LM336, again through voltage follower LM324, power supply processing circuit 16 are isolated.
Described intake valve 2 is that 2/2-way electromagnetic valve, vent valve 3 are the MPX10 pressure transducer for 2/2-way electromagnetic valve, four-way connection 4 for common plastics four-way connection, pressure transducer 5.
Machinery and circuit interface part mainly are the gas pressures that pressure transducer 5 detects in the air bag, pass the signal along to signal amplification circuit 8 seams by sensor interface circuitry 7.Microcontroller system circuit 11 sends the signal after software processes, by isolated drive circuit 10 control intake valves 2, vent valve 3.After instrument starts, power supply processing circuit 16 begins power supply, mini air pump 1 is opened, microcontroller system circuit 11 reads the parameter original value in the EEPROM memory circuit 15 earlier, read keyboard control circuit 12 key assignments again, set parameters, send 15 storages of EEPROM memory circuit and display control circuit 13 to show.Parameter after setting completed, the digital value of read sensor interface circuit 7 behind voltage amplifier circuit 8, A/D convertor circuit 9, judge by microcontroller system circuit 11 software controls, the output control signal, buffer circuit 10 is controlled intake valves 2, vent valve 3 is carried out action according to certain rules through driving, communicate by four-way connection 4 air pressure inside, make three air bags 6 fill, exit by rule.Cause internal pressure to surpass alarm pressure when instrument breaks down, or after having moved the setting circulation, buzzer alarm circuit 14 is reported to the police.
Shown in Fig. 2 schematic diagram of gas circuit, gas circuit provides total source of the gas by a mini air pump 1, is divided into independently three gas circuits.In the instrument implementation process, microcontroller system circuit 11 control cores are sent control signal to the intake valve 2 in three independent gas circuits, vent valve 3 successively, make three air bags 6 inflate successively, exit.Microcontroller system circuit 11 control cores power on to intake valve in the first via 2 earlier, then air bag 6 inflations in the first via, when pressure transducer 5 reached setting value, intake valve 2 stopped to power on, and air bag enters packing state in the first via, after the time-delay, vent valve in the first via 3 is powered on, then air bag 6 venting in the first via is when detecting internal gas pressure and drop to atmospheric pressure again, vent valve 3 stops to power on, and venting finishes.After the time-delay, again the intake valve in next gas circuit 2, vent valve 3 are operated equally, all finished, again the first via is operated again, enter new circulation, thereby realize that three air bags 6 fill successively, exit up to three gas circuits.
In implementation process shown in Fig. 3 list gas circuit decomposition of movement figure, a mouth of intake valve 2 is connected with mini air pump 1, and another mouthful is connected with four-way connection 4, and a mouth of vent valve 3 is connected with four-way connection 4, and another mouthful directly communicates with atmosphere.Two outlets in addition of four-way connection link to each other with air bag 6 with pressure transducer 5 respectively.Instrument starts back mini air pump 1 air feed, when intake valve 2 powers on, during vent valve 3 power down, intake valve 2 is in channel status, gas in the mini air pump 1 directly enters air bag 6 through intake valve 2, and this moment, vent valve 3 was in the pass line state, made internal gas and isolated from atmosphere, airbag aeration and supercharging; When intake valve 2, vent valve 3 power down simultaneously, intake valve 2 is in the pass line state, and mini air pump 1 is isolated with inner air path and can not air feed, and this moment, vent valve 3 also was in the pass line state, make internal gas and isolated from atmosphere, the QI KOU of air bag 6 all is closed and pressurize; When intake valve 2 power down, when vent valve 3 powered on, intake valve 2 was in the pass line state, and mini air pump 1 is isolated with inner air path and can not air feed, and this moment, vent valve 3 was in channel status, and air bag 6 is directly communicated with atmosphere, exitted and blood pressure lowering.Microcontroller system circuit 11 control cores are by sending switching signal, control intake valve 2, vent valve 3 and realize the gas that charges and discharge to single air bag 6.
Fig. 4 is a main program flow chart, and system boot reads every initial parameter from EEPROM memory circuit 15, and " execution " key or " setting " key signals are waited in initialization.If " executions " key responds then that program directly enters running status, be introduced into parameter state is set if " setting " key responds then program, after the parameter that setting completed, value is sent into EEPROM memory circuit 15, and send display control circuit 13 demonstrations.All parameter directly enters running status after setting completed.During operation, software is set gas circuit tag mark n=1 earlier, intake valve 2 in the n road is gone up electric control, and the signal of detection A/D converter 9 outputs, send display control circuit 13 to show actual pressure pick off 5 values of measuring, be raised to setting value up to pressure, again intake valve in the n road 2 carried out power down control.The time-delay pressurize, software is gone up electric control to vent valve 3 in the n road again, and detects the signal of A/D converter 9 outputs, send display control circuit 13 to show actual pressure pick off 5 values of measuring, when pressure drops to atmospheric pressure, again vent valve in the n road 3 is carried out power down control.After the time-delay, gas circuit mark number n adds one, judges whether to finish one-period (n=4), does not finish (n＜4) and then same operation is carried out on next road.When software finished operation (n=4) on one side to three gas circuits after, cycle period symbol m subtracted one, detected cycle period symbol m and whether equaled 0.If equal 0, then program is returned, otherwise program enters next periodic duty, the first via is operated again.
At Fig. 5 is the circuit diagram of control section, and each circuit elements device and operation principle are as follows: microcontroller system circuit 11: core is AT89C52, and its elementary cell also comprises the 12MHZ crystal resonator.By control pin and I/O mouth pin, read and control each branch circuit.Keyboard control circuit 12: this instrument one has 4 buttons---carry out read key, key be set, lifting key, decline key.Adopt 2 * 2 structures for saving I/O, when keyboard did not have key closed, all lines and alignment disconnected.When some keys are closed on the keyboard, pairing row of this key and row short circuit.Line and alignment directly insert the P14～P17 mouth of single-chip microcomputer.Display control circuit 13: adopt 6 LED dynamically to show, single-chip microcomputer P24～P26 inserts 3～8 decoder 74LS138 inputs, exports 6 road useful signals and amplifies through reverser 74LS14 and transistor, connects LED as the position signal.Single-chip microcomputer P20～P23 inserts 4 lines-7 segment decoders/driver 74LS247, exports 7 road signals as segment encode, connects LED.Signal amplification circuit 8: instrumentation amplifier adopts AD620, outputs to A/D convertor circuit 9 after the signal amplification with pick off output.AD7706 is adopted in A/D convertor circuit 9:AD conversion, accepts the signal from signal amplification circuit 8, and the signal after the conversion is directly outputed to single-chip microcomputer.Power supply processing circuit 16: adopt civil power 220V power supply, transformator output 24V, 5V ,-5V three tunnel.The rectification of every Lu Zaijing bridge circuit behind the capacitor filtering, inserts Voltage stabilizing module 7824, Voltage stabilizing module 7805, Voltage stabilizing module 7905 respectively, and the out-put supply place in circuit provides power supply to each device.The reference voltage of A/D convertor circuit 9 is exported back reuse operational amplifier LM324 by benchmark Zener diode LM336, and the source of stable pressure that component property is good provides reliable reference voltage to amplifying circuit and A/D convertor circuit, guarantees conversion accuracy.Buzzer alarm circuit 14: buzzer directly is connected with the P06 of single-chip microcomputer, by software control buzzer state by Voltage stabilizing module 7805 power supplies.EEPROM memory circuit 15: circuit adopts X25045, includes the 4k serial EEPROM, by being connected with single-chip microcomputer P10～P13, can in time system's parameters be preserved, and falls a little or next the start read again in order to system's accident.This chip includes watchdog circuit, and external knob provides functions such as software reset, knob reset.Sensor interface circuitry 7: pick off adopts the MPX10 of Motorola, and its power supply is provided by regulated power supply, again through voltage follower LM324, the forward direction circuit is isolated.Output signal is directly inputted to the input of voltage amplifier circuit.Drive buffer circuit 10: single-chip microcomputer P00～P05 controls intake valve 2, the vent valve 3 on each road again through isolating chip TLP521-2 through the chip ULN2003 that overdrives.
Claims (3)
1, a kind of deep vein embolus preventing instrument is characterized in that: comprise control circuit and pneumatic means, wherein:
1) control circuit: comprise microcontroller system circuit (11), keyboard control circuit (12), display control circuit (13), buzzer alarm circuit (14), EEPROM memory circuit (15), power supply processing circuit (16), A/D convertor circuit (9), isolated drive circuit (10), signal amplification circuit (8), sensor interface circuitry (7); Microcontroller system circuit (11) is connected with keyboard control circuit (12), display control circuit (13), buzzer alarm circuit (14), EEPROM memory circuit (15), power supply processing circuit (16), A/D convertor circuit (9) and isolated drive circuit (10) respectively with I/O mouth pin by the control pin, and A/D convertor circuit (9) is connected with sensor interface circuitry (7) with signal amplification circuit (8) successively;
2) pneumatic means: comprise three independently gas circuits, each road all has intake valve (2), vent valve (3), four-way connection (4), pressure transducer (5) and air bag (6); Four-way connection (4) is connected with intake valve (2), vent valve (3), pressure transducer (5) and air bag (6) respectively, intake valve (2) and vent valve (3) connect isolated drive circuit (10) respectively, pressure transducer (5) is connected with voltage amplifier circuit (8) through sensor interface circuitry (7), connects mini air pump (1) after three intake valves (2) parallel connection.
2, want 1 described a kind of deep vein embolus preventing instrument according to right, it is characterized in that: described microcontroller system circuit (11) adopts AT89C52, AT89C2051 or AT89C51; Keyboard control circuit (12) has 4 buttons, adopts 2 * 2 structures, and line and alignment directly insert the P14～P17 mouth of single-chip microcomputer; Display control circuit (13) adopts 6 LED to show that dynamically single-chip microcomputer P24～P26 inserts 3～8 decoder 74LS138 inputs, exports 6 road useful signals and amplifies through reverser 74LS14 and transistor, connects LED as the position signal; P20～the P23 of single-chip microcomputer inserts 4 lines-7 segment decoders/driver 74LS247, exports 7 road signals and connects LED as segment encode; Its buzzer of buzzer alarm circuit (14) directly is connected with the P06 of single-chip microcomputer by Voltage stabilizing module 7805 power supplies; EEPROM memory circuit (15) is X25045; Power supply processing circuit (16) adopts filtered diode and Voltage stabilizing module 7824, Voltage stabilizing module 7805, Voltage stabilizing module 7905 and Voltage stabilizing module LM336 that power supply is provided, and adopts the LM324 circuit to reduce voltage, for AD620 provides reference power source; A/D convertor circuit (9) is AD7706; Isolated drive circuit (10) is single-chip microcomputer P00～P05 process isolating chip TLP521-2, controls intake valve, the vent valve on each road again through the chip ULN2003 that overdrives; Signal amplification circuit (8) adopts AD620; Its power supply of sensor interface circuitry (7) is provided by regulated power supply LM336, again through voltage follower LM324, power supply processing circuit (16) is isolated.
3, want 1 described a kind of deep vein embolus preventing instrument according to right, it is characterized in that: described intake valve (2) is MPX10 pressure transducer for 2/2-way electromagnetic valve, four-way connection (4) for plastics four-way connection, pressure transducer (5) for 2/2-way electromagnetic valve, vent valve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410073431 CN1251660C (en) | 2004-12-11 | 2004-12-11 | Deep vein embolus preventing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410073431 CN1251660C (en) | 2004-12-11 | 2004-12-11 | Deep vein embolus preventing instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1623526A true CN1623526A (en) | 2005-06-08 |
| CN1251660C CN1251660C (en) | 2006-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410073431 Expired - Fee Related CN1251660C (en) | 2004-12-11 | 2004-12-11 | Deep vein embolus preventing instrument |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104398285A (en) * | 2014-12-10 | 2015-03-11 | 北京龙马负图科技有限公司 | Limb pressurization physiotherapy device operated by voices |
| CN104905950A (en) * | 2015-07-07 | 2015-09-16 | 河南中医学院 | Section-by-section pressurization lower limb vein auxiliary backflow air sac |
| CN106029040A (en) * | 2014-02-07 | 2016-10-12 | 拉杰·罗摩克里希纳 | Portable compression device |
| CN106176164A (en) * | 2016-07-29 | 2016-12-07 | 南京恒慧智能科技有限公司 | A kind of varicose treatment instrument |
| CN107320307A (en) * | 2017-08-11 | 2017-11-07 | 南通科威瀚医疗科技有限公司 | Arteriovenous pulse pressure therapeutic |
| CN108245391A (en) * | 2016-12-28 | 2018-07-06 | 北京中科盛康科技有限公司 | A kind of intermittent the blowing pressure system |
-
2004
- 2004-12-11 CN CN 200410073431 patent/CN1251660C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106029040A (en) * | 2014-02-07 | 2016-10-12 | 拉杰·罗摩克里希纳 | Portable compression device |
| CN104398285A (en) * | 2014-12-10 | 2015-03-11 | 北京龙马负图科技有限公司 | Limb pressurization physiotherapy device operated by voices |
| CN104905950A (en) * | 2015-07-07 | 2015-09-16 | 河南中医学院 | Section-by-section pressurization lower limb vein auxiliary backflow air sac |
| CN106176164A (en) * | 2016-07-29 | 2016-12-07 | 南京恒慧智能科技有限公司 | A kind of varicose treatment instrument |
| CN108245391A (en) * | 2016-12-28 | 2018-07-06 | 北京中科盛康科技有限公司 | A kind of intermittent the blowing pressure system |
| CN107320307A (en) * | 2017-08-11 | 2017-11-07 | 南通科威瀚医疗科技有限公司 | Arteriovenous pulse pressure therapeutic |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1251660C (en) | 2006-04-19 |
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