CN111658939B - Intelligent central suction device for preventing tube drawing from splashing and application method thereof - Google Patents
Intelligent central suction device for preventing tube drawing from splashing and application method thereof Download PDFInfo
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- CN111658939B CN111658939B CN202010422867.1A CN202010422867A CN111658939B CN 111658939 B CN111658939 B CN 111658939B CN 202010422867 A CN202010422867 A CN 202010422867A CN 111658939 B CN111658939 B CN 111658939B
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- film sensor
- tracheal catheter
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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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
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 singlechip, a relay, a signal conditioning circuit and a valve, and 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 instrument amplifier is connected with the singlechip through a wire, the singlechip is connected with the relay through a wire, and the relay is connected with an interface of the signal conditioning circuit through a wire; the signal conditioning circuit is fixed on the side surface of the valve through a sucker or double-sided adhesive tape; the proximal port of the respiratory filter is connected with the tracheal catheter inlet port of the valve through a gas pipeline. The invention forms a set of device through the piezoelectric film sensor, the singlechip and the like, and realizes the purpose of preventing spray from splashing through intelligent attraction when the tracheal catheter is pulled out, and the splash prevention 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 use method thereof.
Background
When the traditional tracheal catheter is used for extubation and sputum aspiration through the tracheal catheter, a large amount of secretion, blood or spray or aerosol can be splashed due to the stimulation of the airway, and particularly, the tracheal catheter is used for extubation or sputum aspiration of a patient suffering from diseases transmitted through the respiratory tract, such as a novel coronavirus pneumonia patient, and the tracheal catheter is in high-risk operation in medicine due to the fact that an operator is very close to the head and the face of the patient. When the tracheal catheter is pulled out, the tracheal catheter and the respiratory circuit are disconnected, then the tracheal catheter is placed into the sputum suction tube to perform the sputum suction operation in the catheter, and the sputum suction can often cause choking and cough of a patient, so that respiratory tract spray and aerosol are generated or secretion is sprayed outwards through the tracheal catheter, and cross infection of medical workers and other patients is easily caused.
Disclosure of Invention
In order to solve the technical problems, the invention provides the intelligent central suction device for preventing spray of the tube drawing and the use method thereof, wherein the piezoelectric film sensor in the tracheal catheter senses the pressure change of the air passage at the moment of spray, the pressure is converted and amplified through signals, and then the singlechip corresponds to the value after the analog-to-digital conversion of the electric signal to judge whether the pressure exceeds the set warning value, and the valve of the central suction device is opened when the pressure exceeds the set warning value, so that the intelligent suction method for preventing spray of the tube drawing is realized, the risk of infection of spray, aerosol or secretion of a patient when medical staff is in tube drawing operation is reduced, and the medical staff is better protected.
The technical solution of the invention is that an intelligent central suction device for preventing splashing in tube drawing comprises: the device comprises a piezoelectric film sensor, a breathing filter, an instrument amplifier, a singlechip, 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 piezoelectric film sensor is connected to the piezoelectric film sensor connector through a piezoelectric film sensor plug, extends out of the breathing filter through a wire and is connected with the instrument amplifier, the instrument amplifier is connected with the singlechip through a wire, the singlechip is connected with the relay through a wire, and the relay is connected with an interface of the signal conditioning circuit through a wire; the signal conditioning circuit is fixed on the side surface of the valve through a sucker or double-sided adhesive tape; the proximal port of the respiratory filter is connected with the tracheal catheter inlet port of the valve through a gas pipeline.
Furthermore, the piezoelectric film is made of polyvinylidene fluoride film or coarse fiber piezoelectric composite film.
Furthermore, the piezoelectric film sensor leads out the electric signal through the piezoelectric film sensor plug and the piezoelectric film sensor connector, and the connection mode of the piezoelectric film sensor plug and the piezoelectric film sensor connector is a plug-connector mode.
Further, the signal conditioning circuit comprises an electromagnet, an interface of a relay and a 15V power interface.
Further, the signal conditioning circuit is fixed on the side surface of the valve, which is close to the air inlet interface, through a sucker or double-sided adhesive tape.
Further, the valve comprises two groups of valves, a first valve and a second valve, and two hinges respectively, namely a first hinge and a second hinge, a first spring and a second spring, an endotracheal tube inlet port, an air inlet, an endotracheal tube side outlet, an air side outlet and a central aspirator port; a baffle plate is arranged in the middle, a first spring is arranged on the upper side of the baffle plate and connected to the first valve; the baffle downside is provided with the second spring, connects to the second valve.
Further, two groups of valves, namely a first valve and a second valve, in the 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 by a second hinge and a second spring.
Further, when the valve is not activated, the first valve at the tracheal catheter side is under the tensile force of the first spring and covers the outlet at the tracheal catheter side, so that the outlet at the tracheal catheter side is in a normally closed state; the second valve on the air inlet side opens the air outlet under the action of the tension of the spring, so that the air outlet is in a normally open state.
Further, 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 splash spray in the tracheal catheter is sucked out by the central aspirator through the gas circuit pipeline; the second valve on the air inlet side is attracted by the acting force of the electromagnet to cover the air outlet, so that the air outlet is closed.
According to another aspect of the present invention, there is also provided a method for using an intelligent central suction device for preventing splashing in a tube drawing, comprising the steps of:
when the tube is drawn, the far-end interface of the breathing filter is connected with the tracheal catheter, the near-end interface is connected with the inlet interface of the tracheal catheter of the valve,
when the pressure exceeds the alarm value, the signal conditioning circuit is started by the relay, the electromagnet in the signal conditioning circuit opens the first valve at the tracheal catheter side in the valve by suction, and simultaneously closes the second valve at the air inlet side in the valve, and the central aspirator sucks gas/spray from the proximal port in the respiratory filter by the gas pipeline, thereby realizing intelligent suction of the spray, and simultaneously connecting the buzzer or the LED lamp by the I/O port of the singlechip for flashing alarm to medical staff.
Compared with the prior art, the invention has the following differences and advantages:
(1) The prior clinical practice mainly adopts that the tracheal catheter is directly connected into the respiratory circuit, the tracheal catheter and the respiratory circuit are disconnected before the tracheal catheter is pulled out, and then the tracheal catheter is placed into the sputum suction tube to perform the sputum suction operation in the catheter, and then the tracheal catheter is pulled out. The disadvantage of the above method is that during sputum aspiration, the patient is prone to choking and at this point a large amount of spray, aerosol is instantaneously sprayed onto the end of the catheter, potentially risking infection by the spray, aerosol or secretions.
(2) The innovation of the invention is that: the invention applies the piezoelectric film sensor and automatic suction to the tracheal catheter tube drawing link, and serves clinical scenes. The airway pressure caused by patient choking cough before tube drawing is increased instantaneously, the pressure change is converted into electric signal by the pressure sensor, the electric signal is amplified and transmitted to the singlechip, a certain pressure warning value is set by combining the singlechip programming, and when the pressure exceeds the warning value, a valve connected with the central aspirator is opened by the relay and the signal conditioning circuit, so that splashed spray is intelligently sucked, and meanwhile, the buzzer or the LED lamp is connected through the I/O port of the singlechip to flash and alarm for medical staff.
1) The piezoelectric film sensor is of a passive structure, and does not need a power supply, so that the system has small power consumption and a simple structure;
2) The signal of the piezoelectric film sensor is only related to the vibration generated by the 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 manufactured into a disposable adhesive sensor, and is discarded after being used once or a plurality of times;
4) The piezoelectric film sensor leads out the electric signal through the plug-connector and the external guide wire.
The method can completely attract and recycle the spray or aerosol sprayed by the patient due to choking and cough when the tube is drawn, and reduces the risk of infection of the spray, aerosol or secretion sprayed by the patient when the medical staff operates.
Drawings
FIG. 1 is a schematic view of an intelligent central suction device for preventing splashing in tube drawing;
FIG. 2 is an exploded view of the piezoelectric film sensor and respiratory filter assembly of the present invention;
FIG. 3 is a schematic view of a piezoelectric thin film sensor in the form of a strip according to the present invention;
FIG. 4 is a schematic view of a circular piezoelectric film sensor according to 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 view of the valve of the present invention in an unactivated state;
fig. 8 is a schematic view of the valve of the present invention in an activated state.
Wherein: the air suction 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, a valve 7, a strip-shaped piezoelectric film 1-1, a piezoelectric film sensor plug 1-2, a ring-shaped support 1-3, a supporting foot 1-4, a round piezoelectric film 1-5, a proximal end interface 2-1, a filter layer upper cover 2-2, a gas collection port 2-3, a gas collection port cover cap 2-4, a filter cotton 2-5, a piezoelectric film sensor joint 2-6, a filter layer lower cover 2-7, a wire 2-8, a drainage side pipe 2-9, a drainage side pipe cover cap 2-10, a distal end interface 2-11, a sucking disc or double-sided adhesive 6-1, a relay interface 6-2, a relay interface two 6-3, an electromagnet 6-4, a power interface 15V, a first valve 7-1, a second valve 7-2, a first hinge 7-3, a second hinge 7-4, a first spring 7-5, a second spring 7-6, an air pipe inlet port 7-8, an air pipe inlet port 7-9 and an air outlet port 7-10.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without the inventive effort based on the embodiments of the present invention are within the scope of protection of the present invention.
As shown in fig. 1, an intelligent central suction device for preventing splashing in tube drawing of the present invention comprises: the breathing filter 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 piezoelectric film sensor 1 is connected to a 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 singlechip 4 through a lead, the singlechip 4 is connected with the relay 5 through a lead, and the relay 5 is connected with a relay interface I6-2 and a relay interface II 6-3 of the signal conditioning circuit 6 through a lead; the signal conditioning circuit 6 is fixed on the side surface of the valve 7 through a sucker or double faced adhesive tape 6-1; the proximal port 2-1 of the respiratory filter 2 is connected to the tracheal tube inlet port 7-7 of the valve 7.
As shown in fig. 2, an assembled exploded view of the piezoelectric film sensor 1 and the respiratory filter 2 according to the present invention includes: the device comprises a piezoelectric film sensor 1, a proximal 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 exhaled gas of a patient for detection, the gas collection port is covered with a cap 2-4, filter cotton 2-5, a 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 cap 2-10 and a distal end interface 2-11.
As shown in fig. 3, the piezoelectric thin film sensor 1 of the present invention includes: the piezoelectric film sensor comprises a strip-shaped piezoelectric film 1-1, a piezoelectric film sensor plug 1-2, an annular bracket 1-3 and supporting feet 1-4. The piezoelectric film sensor 1-1 is adhered below 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 thin slices, 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 polyvinylidene fluoride film or coarse fiber piezoelectric composite film.
The mounting method of the piezoelectric thin film sensor includes, but is not limited to, the method of fig. 3 and 4.
As shown in fig. 5, the signal conditioning circuit of the present invention is secured to the valve air inlet port side by a suction cup or double sided adhesive tape 6-1.
As shown in fig. 6, the signal conditioning circuit of the invention comprises a relay interface one (6-2), a relay interface two (6-3) and electromagnet 6-4 and 15V power interfaces.
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 hinges respectively, 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. A partition board is arranged in the middle, a first spring 7-5 is arranged on the upper side of the partition board and is connected to the first valve 7-1; the lower side of the baffle plate is provided with a second spring 7-6 connected to the second valve 7-2;
when the valve is not activated, the first valve 7-1 at the tracheal catheter side covers the tracheal catheter side outlet 7-9 under the action of the tension of the first spring 7-5, so that the tracheal catheter side outlet 7-9 is in a normally closed state; the air inlet side second flap 7-2 opens the air side outlet 7-10 due to the pulling force of the second spring 7-6, so that the air side outlet 7-10 is in a normally open state.
As shown in figure 8, 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 splash spray in the tracheal catheter is 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.
The method of the invention is realized as follows: when the respiratory filter is pulled out, the far-end interface 2-11 of the respiratory filter 2 is connected with the tracheal catheter, the near-end interface 2-1 is connected with the tracheal catheter inlet interface 7-7 of the valve 7 through a gas pipeline, when a patient generates instantaneous pressure increase in the airway due to choking, the pressure change is sensed by the piezoelectric film sensor 1 and converted into an electric signal, the signal is amplified and transmitted to the singlechip 4 through the instrument amplifier 3, the singlechip 4 is programmed to set a certain pressure warning value, when the pressure exceeds the warning 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 on the tracheal catheter side in the valve 7 through suction, the second valve 7-2 on the air inlet side in the valve 7 is closed, and the central aspirator sucks gas/spray coming out from the near-end interface 2-1 in the respiratory filter 2 through the gas pipeline, so that the intelligent suction of the spray foam is realized, and meanwhile, the buzzer or LED lamp is connected through the I/O port of the singlechip to flash alarm for alarming to medical staff.
Portions of this specification, not specifically described herein, are well known in the art.
While the invention has been described with respect to certain preferred embodiments, it will be apparent to those skilled in the art that various changes and substitutions can be made herein without departing from the scope of the invention as defined by the appended claims.
Claims (4)
1. An intelligent central suction device for preventing splashing in tube drawing, which is characterized by comprising:
the breathing filter 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 piezoelectric film sensor (1) is connected to a 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 singlechip (4) through the lead, the singlechip (4) is connected with the relay (5) through the lead, and the relay (5) is connected with a relay interface I (6-2) and a relay interface II (6-3) of the signal conditioning circuit (6) through the lead; the signal conditioning circuit (6) is fixed on the side surface of the valve (7) through a sucker or double faced 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) through a gas pipeline;
the piezoelectric film (1-1) is made of a polyvinylidene fluoride film or a crude fiber piezoelectric composite film, the piezoelectric film sensor is of a passive structure, a power supply is not needed, and the signal of the piezoelectric film sensor is only related to the vibration generated by gas; the piezoelectric film sensor is manufactured into a disposable adhesive sensor;
the valve (7) comprises two groups of valves, a first valve (7-1) and a second valve (7-2), and two hinges respectively, namely a first hinge (7-3) and a second hinge (7-4), a first spring (7-5) and a second spring (7-6), an air conduit inlet port (7-7), an air inlet port (7-8), an air conduit side outlet port (7-9), an air side outlet port (7-10) and a central aspirator port (7-11); a partition board is arranged in the middle, a first spring (7-5) is arranged on the upper side of the partition board and is connected to the first valve (7-1); the lower side of the baffle plate is provided with a second spring (7-6) connected to the second valve (7-2);
two groups of valves (7), namely a first valve (7-1) and a second valve (7-2), are sheet-shaped and 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);
when the valve is not activated, the first valve (7-1) at the tracheal catheter side is covered on the tracheal catheter side outlet (7-9) under the tensile force of the first spring (7-5), so that the tracheal catheter side outlet (7-9) is in a normally closed state; the air inlet side second valve (7-2) opens the air side outlet (7-10) under the action of the tension of the second spring (7-6), so that the air side outlet (7-10) is in a normally open state;
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 splash spray in the tracheal catheter is sucked out by the central aspirator through the gas circuit pipeline; the air inlet side second valve (7-2) is attracted by the acting force of the electromagnet (6-4) to cover the air outlet (7-10), so that the air side outlet (7-10) is closed.
2. The intelligent central suction device for preventing tube drawing from splashing according to claim 1, wherein: the piezoelectric film sensor (1) leads out electric signals through a piezoelectric film sensor plug (1-2) and a piezoelectric film sensor connector (2-6), and the connection mode of the piezoelectric film sensor plug (1-2) and the piezoelectric film sensor connector (2-6) is a plug-connector mode.
3. The intelligent central suction device for preventing tube drawing from splashing according to claim 1, wherein: the signal conditioning circuit (6) comprises an electromagnet, an interface of the relay (5) and a 15V power interface.
4. The intelligent central suction device for preventing tube drawing from splashing according to claim 1, wherein: 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 double-sided adhesive tape.
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 |
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| 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 |
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| Publication Number | Publication Date |
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| CN111658939A CN111658939A (en) | 2020-09-15 |
| CN111658939B true CN111658939B (en) | 2023-10-03 |
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