CN106492321A - A kind of lung ventilator - Google Patents

A kind of lung ventilator Download PDF

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Publication number
CN106492321A
CN106492321A CN201611039643.2A CN201611039643A CN106492321A CN 106492321 A CN106492321 A CN 106492321A CN 201611039643 A CN201611039643 A CN 201611039643A CN 106492321 A CN106492321 A CN 106492321A
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China
Prior art keywords
valve
lung ventilator
patient
pipeline
pressure source
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CN201611039643.2A
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Chinese (zh)
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CN106492321B (en
Inventor
张卫明
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濡新(北京)科技发展有限公司
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Publication of CN106492321A publication Critical patent/CN106492321A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003Accessories therefor, e.g. sensors, vibrators, negative pressure
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M16/0009Accessories therefor, e.g. sensors, vibrators, negative pressure with sub-atmospheric pressure, e.g. during expiration
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816Joints or connectors
    • A61M16/0833T- or Y-type connectors, e.g. Y-piece
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057Pumps therefor
    • A61M16/0066Blowers or centrifugal pumps
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057Pumps therefor
    • A61M16/0075Bellows-type
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0003Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00General characteristics of the apparatus
    • A61M2205/33Controlling, regulating or measuring
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00General characteristics of the apparatus
    • A61M2205/50General characteristics of the apparatus with microprocessors or computers

Abstract

The present invention provides a kind of lung ventilator, including:Suction line, which is provided with and provide the positive pressure source of malleation, surge tank, 2/2-way saccule valve for patient, and the 2/2-way saccule valve carries out break-make switching control by an air pump and first two-position three-way valve;Expiration pipeline, which is provided with outlet valve, and the outlet valve is controlled it by the compressed gas received from the pre-set constant pressure of surge tank by second two-position three-way valve;Expectoration pipeline, which is provided with the negative pressure source and the fast gate valve being serially connected between negative pressure source and patient for providing negative pressure for patient.Also include:Central processing unit, the data according to the sensor detection in lung ventilator carry out Collaborative Control to lung ventilator each several part.The lung ventilator allows expectoration machine to be embedded in lung ventilator as module, with higher accuracy, response and security.Using same central processing unit, system composition is simplified, and makes the breathing and expectoration work of lung ventilator reach real synchronization.

Description

A kind of lung ventilator
Technical field
A kind of the present invention relates to medical instruments field, more particularly to lung ventilator with expectoration function.
Background technology
For the patient for having used lung ventilator upper, after particularly establishing artificial airway, cough reflex weakens, or because of lung Function slump of disastrous proportions, breathing myasthenia etc., mostly can not independently expectoration, easily cause that secretion is detained and blocking air flue makes lung Infection increases.Therefore, the patient to mechanical ventilation, needs periodically to carry out artificial expectoration process.At present, clinically commonly used is to adopt Use sputum aspirator tube suction sputum, but the suction sputum mode of this intrusive mood of sputum aspirator tube suction sputum, as the negative pressure of local is very high, add conduit Insertion and movement, it is easy to air flue is damaged or air flue scar, meanwhile, the mechanical ventilation of patient can be interrupted, in addition sputum Removing nor very thorough.
Patent WO2007054829 proposes a kind of and lung ventilator associated working first, and auxiliary patient respiration, cough are removed The expectoration system of patient airway secretion, need not interrupt the eupnea of patient during patient's expectoration, can be according to default expectoration Time and expectoration number of times carry out expectoration to patient, can at any time, instant expectoration.
Patent CN 201510657436.2 then further enriches the patent, improves the security of the expectoration system, faces Bed adaptability, it is to avoid when expectoration machine works the problems such as the warning of lung ventilator, the phlegm of expectoration machine expectoration is collected into a collection In phlegm container, then sputum is siphoned away by the central negative pressure attraction system for periodically being configured by hospital by nurse.
In two patents listed above, the triggering expectoration of expectoration machine be by system in pressure or flow sensor come Judge that the process of mechanical ventilation implemented by lung ventilator to patient, that is to say, that lung ventilator and expectoration machine are not communicated, expectoration machine Simply passively by the pressure signal of detection lung ventilator gas circuit, then carry out processing, analyzing the information for obtaining breathing process, but this Following 3 problems would generally be brought:
1st, accuracy and response quickly of system:It is two different machines after all, it is impossible to accomplish that lung ventilator is worked with expectoration machine Precise synchronization.The breathing process pressure signal that lung ventilator is detected in the pressure or flow sensor of expectoration system is converted into electricity After signal, this signal after transmission, amplification, filtration, A/D conversions, then will transfer to message handler to process, and judge, send Instruction, then drives valve or blower fan work through D/A conversions, power amplification, drivable DC voltage again.This can be in control There is a certain degree of time lag in system, affect expectoration effect.
2nd, security:Various environmental conditions are limited by, the detection for breathing process may bring the result of mistake, easily make Into erroneous judgement, breathing pipeline interior condition is very complicated, the water of gaseous vapor and liquid, or even the phlegm of patient's expectoration, and having can Each corner of breathing pipeline can be distributed in, these factors can directly affect the essence of the testing result of pressure or flow sensor Degree, the even result of mistake.So as to cause potential safety hazard.
3rd, pipeline connection is complicated, and the volume that takes up room is big, and high cost, trouble point, leakage point are more.
Content of the invention
For the problems referred to above, the present invention proposes a kind of lung ventilator, and the lung ventilator has higher accuracy, response And security.
A kind of lung ventilator, including:Suction line, which is provided with for patient provide the positive pressure source of malleation, surge tank, two two Logical saccule valve, the 2/2-way saccule valve carry out break-make switching control by an air pump and first two-position three-way valve; Expiration pipeline, which is provided with outlet valve, and the outlet valve is by second two-position three-way valve by receiving from the pre- of surge tank If the compressed gas of constant pressure are controlled it;Expectoration pipeline, which is provided with for patient provide negative pressure negative pressure source and The fast gate valve being serially connected between negative pressure source and patient.
The lung ventilator of the present invention, its advantage is, expectoration machine is embedded in lung ventilator as module, thus Make lung ventilator that there is higher accuracy, response and security.
Using same central processing unit control air-breathing, expiration and expectoration, system composition is simplified, and same central authorities are processed Device carries out Collaborative Control to each several part, makes the breathing and expectoration work of lung ventilator reach real synchronization.
Same central processing unit can be carried out at integration to the information received from multiple parts such as sensor, valve and blower fan Reason, reduces time lag to a certain extent, improves accuracy and the fast-response of system, improve expectoration effect.
Description of the drawings
Gas circuit structure block diagrams of the Fig. 1 for one embodiment of the present invention.
Specific embodiment
Embodiments of the present invention are described with reference to the accompanying drawings, wherein identical part is presented with like reference characters.
Fig. 1 is a kind of gas circuit structure block diagram of embodiment of the lung ventilator of the present invention.
The lung ventilator of the present invention includes suction line, expiration pipeline, expectoration pipeline and patient end pipeline;
Air-in that suction line includes being sequentially connected, air cleaner, empty oxygen blending tank, the first turbofan, First pressure sensor, surge tank, 2/2-way saccule valve.Suction line also has an oxygen input port, directly mixed with empty oxygen Close tank connection.First turbofan is in parallel with a suction control valve (proportional pressure valve or proportional directional valve), with The output pressure and flow of the first turbofan are adjusted.2/2-way saccule valve is by an air pump and one two three Port valve carries out break-make switching control, and then controls being switched in or out for suction line.The two-position three-way valve can be two-bit triplet Magnetic valve.
Expiration pipeline includes outlet valve, and outlet valve is by a two-position three-way valve by receiving the pre-set constant from surge tank The compressed gas of pressure are controlled it, and then control being switched in or out for expiration pipeline.The two-position three-way valve can be two Position-3-way solenoid valve.
Expectoration pipeline is included by being input to the fast gate valve, second pressure sensor, the second turbine wind that output end is sequentially connected Machine.Fast gate valve controls being switched in or out for expectoration pipeline.
Patient end pipeline is sequentially connected oxygen concentration sensor, flow sensor by input to output end, its output end It is connected with patient.
The delivery outlet of suction line is pooled together with the input port of expiration pipeline, expectoration pipeline, is connected with patient end pipeline Connect.Expiration pipeline is pooled together with expectoration pipeline delivery outlet and is connected with silencer, patient is breathed out or the second turbofan is taken out The air-flow for going out is eliminated the noise.
Its course of work is as follows:(i.e. during patient's air-breathing), the sky of surrounding environment when lung ventilator of the present invention is supplied gas to patient Gas enters empty oxygen blending tank 102 via filter 101, and empty oxygen blending tank 102 is configured with oxygen input port, low pressure or high pressure warp Decompression, the oxygen of Flow-rate adjustment enter empty oxygen blending tank 102 by oxygen input port, and (due to belonging to routine techniques, the present invention does not show Go out), in empty oxygen blending tank 102, air and the oxygen mix through Flow-rate adjustment reach default gas concentration.Oxygen is dense Degree sensor 110 is detected to the gas concentration for being conveyed to patient at any time, and data feedback is given in lung ventilator of the present invention Central processor, adjusts oxygen input quantity, to carry out closed-loop control to oxygen concentration.The mixed gas for reaching setting concentration enters Enter the input port of the first turbofan 104, the gas of the first turbofan 104 pairs input pressurizes, output certain flow and The mixed gas of pressure, pressure sensor 106, flow sensor 111 are responsible for pressing the gas that the first turbofan is exported Power and flow detection, and detection after pressure, data on flows be transferred to the central processing unit system of lung ventilator of the present invention, central authorities Processor system is contrasted according to the pressure, data on flows for detecting and expected pressure data, by controlling the first turbofan 104 rotating speed and the aperture of suction control valve 103 (proportional pressure valve or proportional directional valve), jointly control the first whirlpool Wheel blower fan 104 is conveyed to the gas pressure and flow of patient 112.The effect of surge tank 107 is to provide the gas of a constant pressure Body makes outlet valve 116 close in air-breathing, carries out PEEP controls when exhaling to expiratory airflow.
The mixed gas of the output of the first turbofan 104 continue through surge tank 107,2/2-way saccule valve 113, oxygen Concentration sensor 110, flow sensor 111, enter 112 intrapulmonary of patient, complete breathing process.
Now, 2/2-way saccule valve 113 is to turn on, and pump 108 does not start, and two-position three-way valve 109 is maintained at such as figure Gas circuit position, the control chamber of saccule valve 113 are communicated with air.
And now, outlet valve 116 is to cut out, a part of compressed gas of the output of surge tank 107 are by two-bit triplet electricity Magnet valve 105, enters outlet valve 116, and the gas pressure due to now entering outlet valve 116 is larger, and therefore, outlet valve 116 is closed Close.
The expectoration pipeline in parallel with suction line is also now to be blocked by fast gate valve 114.
When to the depressed beam of conveying patient, expiration state is proceeded to, if PEEP regulations need not be carried out, now, the first turbine wind Machine 104 dallies or shuts down.Air pump 108 starts, and two-position three-way valve 109 must be electric, and position is switched to left position, the pressure of the output of air pump 108 Contracting gas enters 2/2-way saccule valve 113 through two-position three-way valve 109, closes the saccule valve, cuts off suction line.With This simultaneously, two-bit triplet magnetic valve 105 electric, be switched to right position, 116 control section of outlet valve is communicated with air, causes to exhale Valve 116 is connected, and the gas of patient's intrapulmonary is through flow sensor 111, oxygen concentration sensor 110, outlet valve 116, silencer 118 are discharged in air, complete exhalation process.
When to the depressed beam of conveying patient, expiration state is proceeded to, PEEP regulations are carried out if desired, air pump 108 starts, two three Port valve 109 must be electric, and position is switched to left position, and the compressed gas of the output of air pump 108 enter two two through two-position three-way valve 109 Logical saccule valve 113, closes saccule valve, cuts off suction line.Meanwhile, the gas of patient's intrapulmonary is through flow sensor 111, oxygen Gas concentration sensor 110, outlet valve 116, silencer 118 flow to air.Also at the same time, the first turbofan 104 reduces turning Speed and output pressure is jointly controlled by suction control valve (proportional pressure valve 103 or proportional pressure control valve), and by the first pressure Force snesor 106 detects the pressure of output and sends central processing unit to carries out closed-loop control, output and the PEEP value phases for setting (this value is equally likely to PEEP values to the constant pressure of pass, it is also possible to due to the structural factor of outlet valve, and default PEEP values have Proportional characteristic) gas, through two-bit triplet magnetic valve 105, entrance 116 control chamber of outlet valve, to flowing to air for the gas Exhaled air flow carries out peep controls.In the process, two-bit triplet magnetic valve 105 is maintained at left position, can access from the first whirlpool Wheel blower fan 104 gas, but the gas pressure less than initial breath pressure thus at the control, outlet valve 116 is opened, and is exhaled Air pipe is unimpeded, and the expiratory airflow of patient can be passed through, and breath pressure is gradually lowered, until reaching with PEEP control pressures flat Weighing apparatus, expiration terminate, and outlet valve is closed.
When to the depressed beam of conveying patient, when needing expectoration, start the second turbofan 117 first, in fast gate valve 114 and second Default expectoration negative pressure is produced between turbofan 117.During the negative pressure is detected and is fed back to by second pressure sensor 115 Central processor, and then, once central processing unit receives the information that air-breathing is completed, air pump 108 starts, two-position three-way valve 109 Must be electric, position is switched to left position, and the compressed gas of the output of air pump 108 enter 2/2-way saccule valve through two-position three-way valve 109 113, close saccule valve, cut off suction line.First turbofan 104 is continued to run with and by suction control valve (ratio Pressure valve 103 or proportional pressure control valve) jointly control output pressure, and the pressure of output is detected by first pressure sensor 106 And send central processing unit to and carry out closed-loop control, (this pressure should be far longer than aforementioned control PEEP to the constant pressure of output Pressure value, to guarantee that outlet valve 116 cuts out) gas through two-bit triplet magnetic valve 105, enters 116 control chamber of outlet valve, close Close outlet valve 116.At the same time, central processing unit controls fast gate valve 114 and opens, the negative pressure that the second turbofan 117 is produced with The intrapulmonary barotropic gas of patient forms very high pressure differential, and therefore the gas of patient's intrapulmonary quickly flow out, through flow sensor 111st, oxygen concentration sensor 110, fast gate valve 114, pressure sensor 115, the second turbofan 117, silencer 118, are discharged to In air, an expectoration process is completed.
Embodiment described above, the simply present invention more preferably specific embodiment, those skilled in the art is at this The usual variations and alternatives carried out in the range of inventive technique scheme should all include within the scope of the present invention.

Claims (9)

1. a kind of lung ventilator, it is characterised in that include:
Suction line, which is provided with and provide the positive pressure source of malleation, surge tank, 2/2-way saccule valve for patient, described two two Logical saccule valve carries out break-make switching control by an air pump and first two-position three-way valve;
Expiration pipeline, which is provided with outlet valve, and the outlet valve is by second two-position three-way valve by receiving from surge tank The compressed gas of pre-set constant pressure control it;
Expectoration pipeline, which is provided with the negative pressure source and the shutter being serially connected between negative pressure source and patient for providing negative pressure for patient Valve.
2. lung ventilator according to claim 1, it is characterised in that also include:
Central processing unit, the data according to the sensor detection in lung ventilator carry out Collaborative Control to lung ventilator each several part.
3. lung ventilator according to claim 2, it is characterised in that the sensor in the lung ventilator includes:
First pressure sensor, is arranged in suction line between positive pressure source and patient;
Oxygen concentration sensor, is arranged in suction line between positive pressure source and patient;
Flow sensor, is arranged in suction line between positive pressure source and patient;
Second pressure sensor, is arranged in expectoration pipeline between negative pressure source and patient,
The sensor is connected with the central processing unit.
4. lung ventilator according to claim 2, it is characterised in that the positive pressure source is the first turbofan, the first turbine Blower fan is in parallel with a suction control valve.
5. lung ventilator according to claim 4, it is characterised in that the suction control valve is proportional pressure valve or ratio Example flow control valve.
6. lung ventilator according to claim 2, it is characterised in that the negative pressure source is the second turbofan.
7. lung ventilator according to claim 2, it is characterised in that first two-position three-way valve, the second two-position three-way valve For two-bit triplet magnetic valve.
8. lung ventilator according to claim 4, it is characterised in that the suction line has also included oxygen blending tank, its Output enters the input port of first turbofan.
9. lung ventilator according to claim 3, it is characterised in that also include patient end pipeline, the oxygen is set thereon Concentration sensor, flow sensor, the output end of patient end pipeline are connected with patient, the delivery outlet and exhaust tube of suction line Road, the input port of expectoration pipeline pool together, and are connected with patient end pipeline, and expiration pipeline is collected in expectoration pipeline delivery outlet It is connected with silencer together.
CN201611039643.2A 2016-11-11 2016-11-11 A kind of ventilator Active CN106492321B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109011090A (en) * 2018-07-02 2018-12-18 南京乐基医疗器械有限公司 Empty oxygen gas mixture road design and the ventilator with the gas circuit
CN110368108A (en) * 2019-07-16 2019-10-25 武汉大学 Improve the device of root-canal filling effect

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103330962A (en) * 2013-07-08 2013-10-02 北京航空航天大学 Sputum suction device with breath simulating function
US20140283834A1 (en) * 2013-03-22 2014-09-25 Breathe Technologies, Inc. Portable ventilator secretion management system
CN205252145U (en) * 2015-10-12 2016-05-25 濡新(北京)科技发展有限公司 Expectoration system
CN206837209U (en) * 2016-11-11 2018-01-05 濡新(北京)科技发展有限公司 A kind of lung ventilator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140283834A1 (en) * 2013-03-22 2014-09-25 Breathe Technologies, Inc. Portable ventilator secretion management system
CN103330962A (en) * 2013-07-08 2013-10-02 北京航空航天大学 Sputum suction device with breath simulating function
CN205252145U (en) * 2015-10-12 2016-05-25 濡新(北京)科技发展有限公司 Expectoration system
CN206837209U (en) * 2016-11-11 2018-01-05 濡新(北京)科技发展有限公司 A kind of lung ventilator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109011090A (en) * 2018-07-02 2018-12-18 南京乐基医疗器械有限公司 Empty oxygen gas mixture road design and the ventilator with the gas circuit
CN110368108A (en) * 2019-07-16 2019-10-25 武汉大学 Improve the device of root-canal filling effect

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