CN111658939A - Intelligent central suction device for pipe drawing and anti-splashing and use method thereof - Google Patents
Intelligent central suction device for pipe drawing and anti-splashing and use method thereof Download PDFInfo
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- CN111658939A CN111658939A CN202010422867.1A CN202010422867A CN111658939A CN 111658939 A CN111658939 A CN 111658939A CN 202010422867 A CN202010422867 A CN 202010422867A CN 111658939 A CN111658939 A CN 111658939A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0488—Mouthpieces; Means for guiding, securing or introducing the tubes
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- A61M1/0023—
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0051—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes with alarm devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0463—Tracheal tubes combined with suction tubes, catheters or the like; Outside connections
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/04—Tracheal tubes
- A61M16/0465—Tracheostomy tubes; Devices for performing a tracheostomy; Accessories therefor, e.g. masks, filters
- A61M16/047—Masks, filters, surgical pads, devices for absorbing secretions, specially adapted therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/10—Preparation of respiratory gases or vapours
- A61M16/105—Filters
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
- G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
- G08B5/36—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission using visible light sources
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
- A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
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- Heart & Thoracic Surgery (AREA)
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- External Artificial Organs (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to an intelligent central suction device for preventing tube drawing from splashing and a use method thereof, wherein the device comprises a piezoelectric film sensor, a breathing filter, an instrument amplifier, a single chip microcomputer, a relay, a signal conditioning circuit and a valve, wherein the breathing filter comprises filter cotton and a far-end interface; the piezoelectric film sensor is arranged between the filter cotton and the far-end interface; the respiration filter extends out of the respiration filter through a lead and is connected with an instrument amplifier, the instrument amplifier is connected with a single chip microcomputer through a lead, the single chip microcomputer is connected with a relay through a lead, and the relay is connected with an interface of a signal conditioning circuit through a lead; the signal conditioning circuit is fixed on the side surface of the valve through a sucker or a double-sided adhesive tape; the near end interface of the breathing filter is connected with the tracheal catheter inlet interface of the valve through a gas pipeline. According to the invention, a set of device is formed by the piezoelectric film sensor, the singlechip and the like, so that spray splashing is prevented by intelligent attraction when the trachea catheter is pulled out, and the anti-splashing effect is stronger.
Description
Technical Field
The invention belongs to the field of medical auxiliary tools, and particularly relates to an intelligent central suction device for preventing tube drawing from splashing and a using method thereof.
Background
When a traditional tracheal catheter is used for drawing a tube and sucking phlegm through the tracheal catheter, a large amount of secretion, blood or spray or aerosol can be sprayed or generated due to stimulation of an airway, and particularly, the tracheal catheter is used for drawing the tube or sucking phlegm of a patient suffering from diseases transmitted through a respiratory tract, such as a novel coronavirus pneumonia patient, and an operator is very close to the head and face of the patient and is more at high risk in medicine. When the tracheal catheter is pulled out, the tracheal catheter and a breathing loop are required to be disconnected, then a sputum suction tube is arranged in the tracheal catheter to carry out sputum suction operation, and the sputum suction tube can often cause the patient to choke and cough, so that the generation of respiratory droplets and aerosol or the outward splashing of secretion through the tracheal catheter is caused, and the cross infection of medical workers and other patients is easily caused.
Disclosure of Invention
In order to solve the technical problem, the invention provides an intelligent central suction device for preventing spray splashing of a tube drawing and a use method thereof.
The invention has the technical scheme that an intelligent central suction device for preventing tube drawing from splashing comprises: the device comprises a piezoelectric film sensor, a breathing filter, an instrument amplifier, a single chip microcomputer, a relay, a signal conditioning circuit and a valve, wherein the breathing filter comprises filter cotton and a far-end interface; the piezoelectric film sensor is arranged between the filter cotton and the far-end interface; the filter cotton is arranged in the breathing filter; the device comprises a piezoelectric film sensor, a breathing filter, an instrument amplifier, a single chip microcomputer, a relay and a signal conditioning circuit, wherein the piezoelectric film sensor is connected to a piezoelectric film sensor connector through a piezoelectric film sensor plug, extends out of the breathing filter through a lead and is connected with the instrument amplifier; the signal conditioning circuit is fixed on the side surface of the valve through a sucker or a double-sided adhesive tape; and the proximal end interface of the breathing filter is connected with the tracheal catheter inlet interface of the valve through a gas pipeline.
Furthermore, the piezoelectric film is made of a polyvinylidene fluoride film or a coarse fiber piezoelectric composite film.
Furthermore, the piezoelectric film sensor leads out an electric signal through a piezoelectric film sensor plug and a piezoelectric film sensor joint, and the connection mode of the piezoelectric film sensor plug and the piezoelectric film sensor joint is a plug-joint mode.
Furthermore, the signal conditioning circuit comprises an electromagnet, a relay interface and a 15V power interface.
Furthermore, the signal conditioning circuit is fixed on the side surface of the valve close to the air inlet interface through a sucker or a double-sided adhesive tape.
Further, the valve comprises two groups of valves, namely a first valve, a second valve and two corresponding hinges, namely a first hinge and a second hinge, a first spring and a second spring, an endotracheal tube inlet interface, an air inlet, an endotracheal tube side outlet, an air side outlet and a central aspirator interface; the middle of the baffle is provided with a baffle plate, and the upper side of the baffle plate is provided with a first spring which is connected to the first valve; the lower side of the clapboard is provided with a second spring which is connected to the second valve.
Furthermore, two groups of valves in the valve, namely a first valve and a second valve, are sheet-shaped and are made of plastic wrapped magnets, and the first valve is fixed through a first hinge and a first spring; the second valve is fixed through a second hinge and a second spring.
Further, when the valve is not activated, the first valve at the side of the tracheal catheter is under the pulling force of the first spring and covers the outlet at the side of the tracheal catheter, so that the outlet at the side of the tracheal catheter is in a normally closed state; the air inlet side second flap is pulled by the spring to open the air side outlet, so that the air side outlet is in a normally open state.
Furthermore, when the valve is activated, the first valve at the tracheal catheter side is attracted by the acting force of the electromagnet to open the outlet at the tracheal catheter side, so that splashed droplets in the tracheal catheter are sucked out by the central aspirator through the gas circuit pipeline; the air inlet side second flap is attracted by the force of the electromagnet to cover the air outlet so that the air side outlet is closed.
According to another aspect of the invention, a method for using the intelligent central suction device for preventing the pipe drawing from splashing is also provided, which comprises the following steps:
when the tube is drawn out, the far end interface of the breathing filter is connected with the tracheal catheter, the near end interface is connected with the tracheal catheter inlet interface of the valve,
when the pressure exceeds the alarm value, the signal conditioning circuit is started through a relay, an electromagnet in the signal conditioning circuit opens a first valve at the side of a gas pipe in the valve through suction, and closes a second valve at the side of an air inlet in the valve, and a central aspirator sucks gas/spray coming out from a near-end interface in a breathing filter through a gas pipeline, so that the sprayed spray is intelligently sucked, and meanwhile, a buzzer or an LED lamp is connected through an I/O port of the singlechip to flash and alarm to medical personnel.
Compared with the prior art, the invention has the following differences and advantages:
(1) at present, the tracheal catheter is mainly and clinically used for being directly connected to a breathing circuit, before the tracheal catheter is drawn out, the tracheal catheter and the breathing circuit are required to be disconnected, and then the tracheal catheter is placed into a sputum suction pipe to be drawn out after sputum suction operation in the tracheal catheter. The above method has the disadvantage that the patient is easy to choke during the sputum aspiration operation, and a large amount of spray and aerosol is instantly sprayed to the end of the catheter, so that the medical operator has the potential risk of infection by the spray, aerosol or secretion.
(2) The innovation of the invention is that: the invention applies the piezoelectric film sensor and automatic attraction to the tracheal catheter tube drawing link, and serves the clinical scene. The patient chocks and coughs the air flue pressure that arouses and increases instantaneously before drawing the pipe when inhaling phlegm and convert pressure change into the signal of telecommunication through pressure sensor to transmit for the singlechip through signal amplification, combine the singlechip to programme and set up certain pressure warning value, open the valve that links to each other with central aspirator through relay, signal conditioning circuit when pressure surpasss this warning value, thereby the intelligent droplet that attracts the splash, connect bee calling organ or LED lamp scintillation through the IO mouth of singlechip simultaneously and report to the police for medical personnel.
1) The piezoelectric film sensor is of a passive structure, and does not need a power supply, so that the system is low in power consumption and simple in structure;
2) the signal of the piezoelectric film sensor is only related to the vibration generated by gas, so that the anti-interference capability is strong, and the application range is wide;
3) the piezoelectric film sensor has low cost, can be made into a disposable adhesive sensor and is discarded after being used for one time or a plurality of times;
4) the piezoelectric film sensor leads out electrical signals through the plug-connector and the outer lead wire.
The method used by the invention can completely attract and recover the spray or aerosol splashed by a patient due to choking when the patient pulls out the tube, and reduces the risk of infection of the spray, aerosol or secretion splashed by the patient when the medical staff operates.
Drawings
FIG. 1 is a schematic view of an intelligent central suction device for pipe drawing and anti-splashing according to the present invention;
FIG. 2 is an exploded view of the piezoelectric film sensor and breather filter assembly of the present invention;
FIG. 3 is a schematic view of a strip piezoelectric film sensor of the present invention;
FIG. 4 is a schematic view of a circular piezoelectric film sensor of the present invention;
FIG. 5 is a schematic diagram of a signal conditioning circuit according to the present invention;
FIG. 6 is a schematic diagram of a signal conditioning circuit of the present invention;
FIG. 7 is a schematic structural view of the valve of the present invention in an unactivated state;
fig. 8 is a schematic view of the valve activation state according to the present invention.
Wherein: the device comprises a piezoelectric film sensor 1, a breathing filter 2, an instrument amplifier 3, a single chip microcomputer 4, a relay 5, a signal conditioning circuit 6, a valve 7, a strip-shaped piezoelectric film 1-1, a piezoelectric film sensor plug 1-2, an annular support 1-3, supporting legs 1-4, a round piezoelectric film 1-5, a near-end interface 2-1, a filter layer upper cover 2-2, a gas collection port 2-3, a gas collection port cap 2-4, filter cotton 2-5, a piezoelectric film sensor joint 2-6, a filter layer lower cover 2-7, a lead 2-8, a drainage side tube 2-9, a drainage side tube cap 2-10, a far-end interface 2-11, a sucker or double-faced adhesive tape 6-1, a relay interface I6-2, a relay interface II 6-3, 6-4 parts of electromagnet, 15V parts of power interface, 7-1 parts of first valve, 7-2 parts of second valve, 7-3 parts of first hinge, 7-4 parts of second hinge, 7-5 parts of first spring, 7-6 parts of second spring, 7-7 parts of tracheal catheter inlet interface, 7-8 parts of air inlet, 7-9 parts of tracheal catheter side outlet, 7-10 parts of air side outlet and 7-11 parts of central aspirator interface.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person skilled in the art based on the embodiments of the present invention belong to the protection scope of the present invention without creative efforts.
As shown in fig. 1, the intelligent central suction device for pipe drawing and splash prevention of the present invention comprises: the device comprises a piezoelectric film sensor 1, a breathing filter 2, an instrument amplifier 3, a singlechip 4, a relay 5, a signal conditioning circuit 6 and a valve 7, wherein the breathing filter 2 comprises filter cotton 2-5 and a far-end interface 2-11; the piezoelectric film sensor 1 is arranged between the filter cotton 2-5 and the far-end interface 2-11; the filter cotton 2-5 is arranged in the breathing filter 2; the device comprises a piezoelectric film sensor 1, a breathing filter 2, an instrument amplifier 3, a single chip microcomputer 4, a relay 5, a signal conditioning circuit 6, a first relay interface 6-2 and a second relay interface 6-3, wherein the piezoelectric film sensor 1 is connected to the piezoelectric film sensor connector 2-6 through a piezoelectric film sensor plug 1-2, extends out of the breathing filter 2 through a lead 2-8 and is connected with the instrument amplifier 3, the instrument amplifier 3 is connected with the single chip microcomputer 4 through a lead, the single chip microcomputer 4 is connected with the relay 5 through a lead, and the relay 5 is connected; the signal conditioning circuit 6 is fixed on the side surface of the valve 7 through a sucker or a double-sided adhesive tape 6-1; the proximal end interface 2-1 of the respiratory filter 2 is connected with the tracheal catheter inlet interface 7-7 of the valve 7.
As shown in fig. 2, an exploded view of the piezoelectric thin film sensor 1 and the respiratory filter 2 according to the present invention includes: the device comprises a piezoelectric film sensor 1, a near-end interface 2-1, a filter layer upper cover 2-2 and a gas collection port 2-3, wherein the gas collection port is used for collecting gas exhaled by a patient for detection, the gas collection port cover 2-4, filter cotton 2-5, the piezoelectric film sensor connector 2-6, a filter layer lower cover 2-7, a lead 2-8, a drainage side tube 2-9, a drainage side tube cover 2-10 and a far-end interface 2-11.
As shown in fig. 3, the piezoelectric thin film sensor 1 of the present invention includes: the piezoelectric sensor comprises a strip-shaped piezoelectric film 1-1, a piezoelectric film sensor plug 1-2, an annular support 1-3 and supporting legs 1-4. The piezoelectric film sensor 1-1 is adhered to the lower surface of the annular support 1-3. A plurality of supporting feet 1-4 are connected around the annular bracket 1-3; and the supporting feet 1-4 are in thin sheet package, and the height is larger than the thickness of the annular bracket.
Alternatively, as shown in fig. 4, the piezoelectric film of the present invention may also be a circular piezoelectric film 1-5;
the piezoelectric film sensor is made of a polyvinylidene fluoride film or a coarse fiber piezoelectric composite film.
The mounting method of the piezoelectric film sensor includes, but is not limited to, the method shown in fig. 3 and 4.
As shown in fig. 5, the signal conditioning circuit of the present invention is fixed to the side of the air inlet interface end of the valve by means of a suction cup or double-sided tape 6-1.
As shown in FIG. 6, the signal conditioning circuit of the present invention includes a first relay interface (6-2), a second relay interface (6-3), and a 6-4, 15V power interface of the electromagnet.
As shown in FIG. 7, the valve 7 of the present invention comprises two sets of flaps, a first flap 7-1 and a second flap 7-2, and two corresponding hinges, a first hinge 7-3 and a second hinge 7-4, a first spring 7-5 and a second spring 7-6, an endotracheal tube inlet port 7-7, an air inlet port 7-8, an endotracheal tube side outlet port 7-9, an air side outlet port 7-10, and a central aspirator port 7-11. The middle of the baffle is provided with a baffle plate, the upper side of the baffle plate is provided with a first spring 7-5 which is connected to a first valve 7-1; a second spring 7-6 is arranged at the lower side of the clapboard and is connected with a second valve 7-2;
when the valve is not activated, the first valve 7-1 at the side of the tracheal catheter is covered on the outlet 7-9 at the side of the tracheal catheter due to the pulling force of the first spring 7-5, so that the outlet 7-9 at the side of the tracheal catheter is in a normally closed state; the air inlet side second flap 7-2 opens the air side outlet 7-10 due to the tensile force of the second spring 7-6, so that the air side outlet 7-10 is normally open.
As shown in fig. 8, when the valve of the present invention is activated, the first flap 7-1 at the endotracheal tube side is attracted by the force of the electromagnet 6-4 to open the outlet 7-9 at the endotracheal tube side, so that splashed droplets in the endotracheal tube are sucked out by the central aspirator through the gas circuit; the air inlet side second flap 7-2 is drawn over the air outlet 7-10 by the force of the electromagnet 6-4 so that the air side outlet 7-10 is closed.
The method of the invention is realized as follows: when the patient is in tube drawing, the far end interface 2-11 of the breathing filter 2 is connected with the tracheal tube, the near end interface 2-1 is connected with the tracheal tube inlet interface 7-7 of the valve 7 through the gas pipeline, when the instantaneous pressure in the airway is increased due to the patient's cough, the pressure change is sensed and converted into an electric signal by the piezoelectric film sensor 1, the signal is amplified and transmitted to the singlechip 4 through the instrument amplifier 3, the singlechip 4 sets a certain pressure alarm value through programming, when the pressure exceeds the alarm value, the signal conditioning circuit 6 is started through the relay 5, the electromagnet 6-4 in the signal conditioning circuit 6 opens the first valve 7-1 at the tracheal tube side of the valve 7 through suction, the second valve 7-2 at the tracheal tube side of the valve 7 is closed at the same time, the central aspirator sucks the gas/spray from the near end interface 2-1 of the breathing filter 2 through the gas pipeline, therefore, the intelligent absorption of splashed spray is realized, and meanwhile, the I/O port of the single chip microcomputer is connected with a buzzer or an LED lamp to give an alarm for medical care personnel.
The present description is not set forth in detail in order to not unnecessarily obscure the present invention.
The above description is only a part of the embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (10)
1. The utility model provides a be used for tube drawing to prevent intelligent central authorities suction device of splash, its characterized in that includes:
the device comprises a piezoelectric film sensor (1), a breathing filter (2), an instrument amplifier (3), a single chip microcomputer (4), a relay (5), a signal conditioning circuit (6) and a valve (7), wherein the breathing filter (2) comprises filter cotton (2-5) and a far-end interface (2-11); the piezoelectric film sensor (1) is arranged between the filter cotton (2-5) and the far-end interface (2-11); the filter cotton (2-5) is arranged in the breathing filter (2); the device comprises a piezoelectric film sensor (1), a breathing filter (2), an instrument amplifier (3), a single chip microcomputer (4), a relay (5), a signal conditioning circuit (6), a first relay interface (6-2) and a second relay interface (6-3), wherein the piezoelectric film sensor (1) is connected to piezoelectric film sensor connectors (2-6) through piezoelectric film sensor plugs (1-2), extends out of the breathing filter (2) through leads (2-8), and is connected with the instrument amplifier (3), the instrument amplifier (3) is connected with the single chip microcomputer (4) through leads, the single chip microcomputer (4) is connected with the relay (5) through leads, and the relay (5) is connected with the first; the signal conditioning circuit (6) is fixed on the side surface of the valve (7) through a sucker or a double-sided adhesive tape (6-1); the near-end interface (2-1) of the breathing filter (2) is connected with the tracheal catheter inlet interface (7-7) of the valve (7) through a gas pipeline.
2. The intelligent central suction device for pipe drawing and splash prevention according to claim 1, characterized in that: the piezoelectric film (1-1) is made of a polyvinylidene fluoride film or a crude fiber piezoelectric composite film.
3. The intelligent central suction device for pipe drawing and splash prevention according to claim 1, characterized in that: the piezoelectric film sensor (1) leads out an electric signal through a piezoelectric film sensor plug (1-2) and a piezoelectric film sensor joint (2-6), and the connection mode of the piezoelectric film sensor plug (1-2) and the piezoelectric film sensor joint (2-6) is a plug-joint mode.
4. The intelligent central suction device for pipe drawing and splash prevention according to claim 1, characterized in that: the signal conditioning circuit (6) comprises an electromagnet, an interface of the relay (5) and a 15V power interface.
5. The intelligent central suction device for pipe drawing and splash prevention according to claim 1, characterized in that: the signal conditioning circuit (6) is fixed on the side surface of the valve (7) close to the air inlet interface through a sucker or a double-sided adhesive tape.
6. The intelligent central suction device for pipe drawing and splash prevention according to claim 1, characterized in that:
the valve (7) comprises two groups of valves, namely a first valve (7-1), a second valve (7-2) and two corresponding hinges, namely a first hinge (7-3) and a second hinge (7-4), a first spring (7-5) and a second spring (7-6), an inlet interface (7-7) of the tracheal catheter, an air inlet (7-8), a side outlet (7-9) of the tracheal catheter, an air side outlet (7-10) and a central aspirator interface (7-11); a clapboard is arranged in the middle, and a first spring (7-5) is arranged on the upper side of the clapboard and is connected to the first valve (7-1); the lower side of the clapboard is provided with a second spring (7-6) which is connected with a second valve (7-2).
7. The intelligent central suction device for pipe drawing and splash prevention according to claim 1, characterized in that: two groups of valves in the valve (7), namely a first valve (7-1) and a second valve (7-2), are sheet-shaped and are made of plastic wrapped magnets, and the first valve (7-1) is fixed through a first hinge (7-3) and a first spring (7-5); the second valve (7-2) is fixed through a second hinge (7-4) and a second spring (7-6).
8. The intelligent central suction device for pipe drawing and splash prevention according to claim 1, characterized in that:
when the valve is not activated, the first valve (7-1) at the tracheal catheter side is under the pulling force of the first spring (7-5) and covers the outlet (7-9) at the tracheal catheter side, so that the outlet (7-9) at the tracheal catheter side is in a normally closed state; the air inlet side second valve (7-2) is pulled by the second spring (7-6) to open the air side outlet (7-10), so that the air side outlet (7-10) is in a normally open state.
9. The intelligent central suction device for pipe drawing and splash prevention according to claim 1, characterized in that:
when the valve is activated, the first valve (7-1) at the tracheal catheter side is attracted by the acting force of the electromagnet (6-4) to open the outlet (7-9) at the tracheal catheter side, so that splashed droplets in the tracheal catheter are sucked out by the central aspirator through the gas circuit pipeline; the air inlet side second flap (7-2) is attracted to cover the air outlet (7-10) by the force of the electromagnet (6-4), so that the air outlet (7-10) is closed.
10. A use method of an intelligent central suction device for preventing splashing during pipe drawing is characterized by comprising the following steps:
when the trachea is pulled out, a far-end interface (2-11) of a breathing filter (2) is connected with a tracheal catheter, a near-end interface (2-1) is connected with a tracheal catheter inlet interface (7-7) of a valve (7), when the instantaneous pressure in the airway of a patient is increased due to choking cough, the pressure change is sensed by a piezoelectric film sensor (1) and converted into an electric signal, the signal is amplified and transmitted to a singlechip (4) through an instrument amplifier (3), the singlechip (4) sets a preset pressure warning value through programming, when the pressure exceeds the warning value, a signal conditioning circuit (6) is started through a relay (5), an electromagnet (6-4) in the signal conditioning circuit (6) opens a first valve (7-1) at the tracheal catheter side of the valve (7) through attraction, and closes a second valve (7-2) at the tracheal catheter inlet side of the valve (7), the central aspirator sucks gas/spray from a near-end interface (2-1) in the breathing filter (2) through a gas pipeline, so that the sprayed spray is intelligently sucked, and meanwhile, a buzzer or an LED lamp is connected through an I/O port of the single chip microcomputer to give a flash alarm to medical care personnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010422867.1A CN111658939B (en) | 2020-05-19 | 2020-05-19 | Intelligent central suction device for preventing tube drawing from splashing and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010422867.1A CN111658939B (en) | 2020-05-19 | 2020-05-19 | Intelligent central suction device for preventing tube drawing from splashing and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111658939A true CN111658939A (en) | 2020-09-15 |
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| US20070221221A1 (en) * | 2006-02-23 | 2007-09-27 | Cooke Richard H | Ventilator for Rapid Response to Respiratory Disease Conditions |
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| CN111658939B (en) | 2023-10-03 |
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