CN112135654B - Oxygen sensor connection structure, ventilation apparatus, and ventilation system - Google Patents
Oxygen sensor connection structure, ventilation apparatus, and ventilation system Download PDFInfo
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- CN112135654B CN112135654B CN201880093640.8A CN201880093640A CN112135654B CN 112135654 B CN112135654 B CN 112135654B CN 201880093640 A CN201880093640 A CN 201880093640A CN 112135654 B CN112135654 B CN 112135654B
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- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
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Abstract
An oxygen sensor connecting structure, a ventilation device (5) and a ventilation system are provided, the oxygen sensor connecting structure comprises at least one sensor switching component (1), the sensor switching component (1) is matched with an oxygen sensor mounting structure of the ventilation device (5), and the sensor switching component (1) is detachably connected with an oxygen sensor (2); after at least one oxygen sensor (2) is connected to the shell of the ventilation equipment (5) through the sensor switching component (1), the air path interface (211) of the oxygen sensor (2) is communicated with the air suction branch (16) of the ventilation equipment (5).
Description
Technical Field
The present disclosure relates to the technical field of medical devices, and for example, to an oxygen sensor connection structure, a ventilation device, and a ventilation system.
Background
Oxygen sensors are an important component of ventilators that monitor the oxygen concentration value of the gas mixture delivered to the patient via the oxygen sensor. The oxygen sensor can be, for example, a chemical oxygen battery or a paramagnetic oxygen sensor, the chemical oxygen battery is widely used and has low cost, but the chemical oxygen battery consumes an internal lead level in the measurement process, has a service life of one to two years and needs to be replaced regularly, and if the service life of the chemical oxygen battery exceeds the service life and is not replaced regularly, the oxygen concentration value monitoring is inaccurate, the use safety of the breathing machine is seriously affected, and the risk is brought to a patient. The paramagnetic oxygen sensor utilizes the pure physical characteristics of oxygen, basically has no loss in the measurement process, has long service life, is free from replacement in the life cycle of the respirator, can not cause inaccurate precision even after long-term use, and has higher use safety and reliability.
The installation interfaces of different types of oxygen sensors have great difference, and in the related art, only one type of sensor can be configured when the respirator is used, and the installation interface of the respirator cannot be compatible with different types of oxygen sensors. In addition, the oxygen sensor is generally disposed inside the ventilator, which causes inconvenience in replacement and maintenance of the oxygen sensor.
Disclosure of Invention
The utility model provides an oxygen sensor connection structure, ventilation equipment and ventilation system when realizing that oxygen sensor convection inhales the oxygen concentration collection of gas in the branch road through ventilation equipment for on different kinds of oxygen sensor can be connected to ventilation equipment's shell through sensor switching part, ventilation equipment can the compatible different grade type oxygen sensor, and need not to demolish ventilation equipment's shell and can realize change and the maintenance to the oxygen sensor who is connected to ventilation equipment.
The present disclosure provides an oxygen sensor connecting structure for connecting at least one oxygen sensor to a housing of a ventilator, comprising:
the sensor adapter component is matched with an oxygen sensor mounting structure of the ventilation equipment, and the sensor adapter component is detachably connected with the oxygen sensor;
when at least one oxygen sensor is connected to the shell of the ventilation equipment through the sensor adapter component, the air path interface of the oxygen sensor is communicated with the air suction branch of the ventilation equipment.
In one embodiment, the oxygen sensor connecting structure further includes:
a first sensor type identification unit, the oxygen sensor connection structure identifying the type of the connected oxygen sensor according to the first sensor type identification unit.
In one embodiment, the type of attached oxygen sensor is a paramagnetic oxygen sensor or a chemical oxygen sensor.
In one embodiment, the oxygen sensor connecting structure further includes:
and the air path switching component is arranged to connect the air path interface of the oxygen sensor and the air suction branch of the ventilation equipment.
In one embodiment, the oxygen sensor connecting structure further includes:
and the oxygen sensor connecting structure forwards the oxygen concentration detection value of the oxygen sensor to the ventilation equipment through the electric signal switching unit.
The invention also provides a ventilation device which is detachably connected with the oxygen sensor connecting structure and comprises a shell, an air source interface arranged on the shell, an air suction branch, an air expiration branch and a control unit, wherein the air suction branch, the air expiration branch and the control unit are packaged in the shell;
when at least one oxygen sensor is connected to the shell of the ventilation equipment through the sensor adapter component, the air path interface of the oxygen sensor is communicated with the air suction branch of the ventilation equipment.
In an embodiment, the ventilator further comprises:
a second oxygen sensor type identification unit by which the ventilator identifies the type of the oxygen sensor connected to the ventilator housing.
In one embodiment, the oxygen sensor coupled to the ventilator housing is of the type a paramagnetic oxygen sensor or a chemical oxygen sensor.
In an embodiment, the ventilator further comprises:
a transceiver unit through which the ventilator receives an oxygen concentration detection value of the oxygen sensor.
In an embodiment, the ventilator further comprises:
and the gas path sampling outlet is arranged on the shell and is arranged to be connected with the gas suction branch and the oxygen sensor or a gas path switching part of the oxygen sensor connecting structure.
In an embodiment, the ventilator is a ventilator or an anesthesia machine.
The present disclosure also provides a ventilation system comprising at least one oxygen sensor, the above oxygen sensor connection structure, and the above ventilation apparatus, the at least one oxygen sensor being detachably connected to the housing of the ventilation apparatus through the oxygen sensor connection structure.
In one embodiment, the oxygen sensor is a paramagnetic oxygen sensor or a chemical oxygen sensor.
The utility model provides an oxygen sensor connection structure, ventilation equipment and ventilation system, can be connected to at least one oxygen sensor to ventilation equipment's shell through setting up oxygen sensor connection structure, oxygen sensor includes at least one sensor switching part, sensor switching part cooperatees with ventilation equipment's oxygen sensor mounting structure, sensor switching part can dismantle with oxygen sensor and be connected, after at least one oxygen sensor passes through sensor switching part and is connected to ventilation equipment's shell, oxygen sensor's gas circuit interface can communicate ventilation equipment's the branch road of breathing in, when realizing that oxygen sensor is to the gaseous oxygen concentration collection in the branch road of breathing in through ventilation equipment, utilize sensor switching part to make different kinds of oxygen sensor can be connected to ventilation equipment's shell through sensor switching part, the problem that ventilation equipment can not be compatible multiple oxygen sensor has been solved, need not to dismantle ventilation equipment's shell can realize changing and the maintenance to being connected to ventilation equipment's oxygen sensor.
Drawings
Fig. 1 is a schematic structural diagram of a ventilation apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic internal view of a ventilator according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a sensor adapter component according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another sensor adapter component according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a circuit for identifying a type of an oxygen sensor according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention;
FIG. 7 is a schematic view of an alternative mounting structure of an oxygen sensor attachment structure according to an embodiment of the present invention;
FIG. 8 is a schematic view of an alternative mounting structure of an oxygen sensor attachment structure according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention; and
fig. 12 is a schematic diagram of another oxygen sensor type identification circuit structure according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic structural diagram of a ventilator provided in an embodiment of the present invention, fig. 2 is a schematic internal diagram of a ventilator provided in an embodiment of the present invention, fig. 3 is a schematic structural diagram of a sensor adapter component provided in an embodiment of the present invention, and fig. 4 is a schematic structural diagram of another sensor adapter component provided in an embodiment of the present invention. With reference to fig. 1 to 4, the oxygen sensor connection structure includes at least one sensor adapter member 1, the sensor adapter member 1 is engaged with the oxygen sensor mounting structure of the ventilator 5, the sensor adapter member 1 is detachably connected to the oxygen sensor 2, and the oxygen sensor connection structure is capable of connecting the at least one oxygen sensor 2 to the housing 51 of the ventilator 5.
With reference to fig. 1 to 4, it may be provided that the oxygen sensor connection structure comprises a sensor adapter member 1, which sensor adapter member 1 cooperates with an oxygen sensor mounting structure at a ventilator site a, for example, the sensor connection member 1 may be fixed at a ventilator site a at a ventilator 5 by means of a mounting structure S1 using screws.
The ventilation device 5 comprises a housing 51, an air source interface 18 arranged on the housing 51, and an inhalation branch 16, an exhalation branch 19 and a control unit 17 which are enclosed in the housing. The air supply interface 18 is in communication with the inspiratory limb 16, and the inspiratory limb 16 and expiratory limb 19 are in communication with the nose and mouth of the patient via patient lines. When the patient inhales, the gas introduced from the gas source interface 18 is transmitted to the mouth and nose of the patient through the inhaling branch 16; when the patient exhales, the exhaled gas is exhausted through the exhalation limb 19. The control unit 17 can control the opening and closing of the inspiration branch 16 and the expiration branch 19 respectively, so as to ensure the normal use of the ventilation device 5.
The sensor adapter part 1 can be detachably provided with a chemical oxygen sensor 21 or a paramagnetic oxygen sensor 22, the two types of oxygen sensors 2 are different from the sensor adapter part 1 in mounting structure, for example, the chemical oxygen sensor 21 can be arranged on the sensor adapter part 1 in a threaded manner, namely, the chemical oxygen sensor 21 and the sensor adapter part 1 are fixedly mounted through the mounting structures S2 and S3, the paramagnetic oxygen sensor 22 can be installed on the sensor adapter part 1 in a pluggable manner, namely, the paramagnetic oxygen sensor 22 and the sensor adapter part 1 are fixedly mounted through the mounting structures S4 and S5.
Fig. 3 is a schematic structural diagram of a sensor adapter component in which a chemical oxygen sensor 21 is installed on the sensor adapter component 1 in a threaded manner according to an embodiment of the present invention, and fig. 4 is a schematic structural diagram of a sensor adapter component in which a paramagnetic oxygen sensor 22 is installed on the sensor adapter component 1 in a pluggable manner according to an embodiment of the present invention. In an embodiment, the chemical oxygen sensor 21 and the paramagnetic oxygen sensor 22 may be mounted on the sensor adapter component 1 in other manners, and the mounting manners between the different oxygen sensors 2 and the sensor adapter component 1 may be set according to requirements. Similarly, the embodiment of the present invention does not limit the mounting manner of the sensor adapter member 1 to the ventilator 5. In this way, the sensor adapter component 1 is utilized to enable different types of oxygen sensors 2 to be connected to the housing 51 of the ventilator 5 through the sensor adapter component 1, thereby solving the problem that the ventilator 5 is not compatible with multiple types of oxygen sensors 2.
With reference to fig. 1 to 4, the oxygen sensor 2 can be connected to the housing 51 of the ventilator 5 by means of the sensor adapter part 1, i.e. the oxygen sensor 2 can be connected to the region of the space of the ventilator 5 outside the interior in which the inspiration limb 16 is arranged by means of the sensor adapter part 1, since different types of oxygen sensors 2 can be connected to the housing 51 of the ventilator by means of the sensor adapter part 1, replacement and maintenance of the oxygen sensor 2 connected to the ventilator 5 can be carried out without having to remove the housing 51 of the ventilator 5.
With reference to fig. 1 to 4, the ventilator 1 may further include a mounting door 20, and one side where the mounting door 20 is provided is hinge-provided on the body 112 of the housing 51. When the oxygen sensor 2 needs to be replaced and maintained, only the installation door 20 needs to be opened, and the oxygen sensor is simple and convenient. Of course, a locking structure such as a latch, a screw, etc. may be provided between the mounting door 20 and the body 112 of the housing 51, so that the mounting door 20 can be locked on the body 112 after being closed. In this context, the housing 51 of the venting device refers to the part of the housing that needs to be disassembled with tools by service personnel. In other embodiments, the mounting door 20 may be replaced with other shielding structures for cooperating with the housing 51 to cooperatively receive the oxygen sensor 2. In other embodiments, it is also possible that only the body 112 is provided with the mounting groove 113, and the oxygen sensor 2 is entirely or partially accommodated in the mounting groove 113. In other embodiments, it is also possible to simply dispose the oxygen sensor 2 on the outer surface of the body 112, and the installation door 20 is not additionally disposed, so as to facilitate the installation of the oxygen sensor 2; it is also possible to directly mount the oxygen sensor 2 outside the housing 51 without providing the mounting groove 113 and the mounting door 20.
With reference to fig. 1 to 4, after at least one oxygen sensor 2 is connected to the ventilator 5 through the sensor adapter component 1, the air path interface 211 of the oxygen sensor 2 may communicate with the inhalation branch 16 of the ventilator 5. In an embodiment, the oxygen sensor connection structure may further include an air passage adapter component 161 connecting the air passage interface 211 of the oxygen sensor 2 and the inhalation branch 16 of the ventilator device 5. The air path interface 211 of the oxygen sensor 2 is communicated with the air suction branch 16 of the ventilation device 5 through the air path adapter part 161, and the oxygen sensor 2 detects the oxygen concentration of the gas in the air suction branch 16.
In an embodiment, the oxygen sensor connection structure may further include a first sensor type identification unit identifying a type of the connected oxygen sensor. In an embodiment, the type of the oxygen sensor connected to the ventilator may be a paramagnetic oxygen sensor or a chemical oxygen sensor, i.e., the oxygen sensor connection structure may be provided with a first sensor type identification unit to determine whether the oxygen sensor connected to the ventilator is a paramagnetic oxygen sensor or a chemical oxygen sensor.
In one embodiment, the first sensor type identification unit may be provided as a short set of electrical contacts comprising two electrical contacts shorted together. Fig. 5 is a schematic structural diagram of an oxygen sensor type identification circuit according to an embodiment of the present invention. With reference to fig. 1 to 5, when the sensor adaptor part 1 is connected to the housing 51 of the ventilator 5, the shorting electrical contact group 3 may communicate with two electrically insulated detection electrical contacts D1 provided on the ventilator 5 corresponding to the shorting electrical contact group 3, and the ventilator 5 determines the type of the oxygen sensor 2 mounted to the ventilator 5 according to whether the two corresponding detection electrical contacts D1 communicate with each other.
With reference to fig. 1 to 5, when the oxygen sensor connection structure includes one sensor adapter 1, the short-circuit electrical contact group 3 may be disposed on the oxygen sensor 2, for example, one of the chemical oxygen sensor 21 and the paramagnetic oxygen sensor 22 may be disposed with the short-circuit electrical contact group 3, for example, the chemical oxygen sensor 21 is disposed with the short-circuit electrical contact group 3, the paramagnetic oxygen sensor 22 is not disposed with the short-circuit electrical contact group 3, the ventilation device 5 is disposed with a detection electrical contact group 4, and the detection electrical contact group 4 includes two detection electrical contacts D1 that are electrically insulated. The type of the connected oxygen sensor 2 is distinguished by the different voltage difference between the two electrical contacts B1 in the short electrical contact group 3, for example, when the ventilator 5 detects that the voltage difference between the two detection electrical contacts D1 is low, the connected oxygen sensor 2 is determined to be a chemical oxygen sensor 21, and when the ventilator 5 detects that the voltage difference between the two detection electrical contacts D1 is high, the connected oxygen sensor 2 is determined to be a paramagnetic oxygen sensor 22. Certainly, the short-circuit electrical contact group 3 and the detection electrical contact group 4 may both include an electrical contact, when the two electrical contacts in the short-circuit electrical contact group 3 and the detection electrical contact group 4 are connected and disconnected, voltages on the electrical contacts are different, and the ventilation device 5 may also determine the type of the oxygen sensor 2 by detecting the voltages of the electrical contacts.
In one embodiment, when replacing the oxygen sensor 2 connected to the housing 51 of the ventilator 5, the replacement of the oxygen sensor 2 can be completed only by detaching the oxygen sensor 2 on the sensor adapter member 1 without replacing the sensor adapter member 1. When the oxygen sensor 2 is mounted to the ventilator 5 through the sensor adapter member 1, if the ventilator 5 detects that the two detection electrical contacts D1 are short-circuited, the ventilator 5 may determine that the oxygen sensor 2 mounted to the ventilator 5 through the sensor adapter member 1 is the chemical oxygen sensor 21; if the ventilator 5 detects that the two detection electrical contacts D1 are in the open state, the ventilator 5 may determine that the oxygen sensor 2 mounted to the ventilator through the sensor adapter part 1 is the paramagnetic oxygen sensor 22. Therefore, the electrical interface of the ventilation device 5 can be compatible with detection of different types of oxygen sensors 2, and the problem that the difficulty of type detection of different types of oxygen sensors 2 by the ventilation device due to replacement of a circuit board in the ventilation device 5 is high is solved.
Fig. 6 is a schematic diagram of another oxygen sensor type identification circuit structure according to an embodiment of the present invention. With reference to fig. 1 to 4 and 6, the oxygen sensor connection structure includes a sensor adapter 1, and may also be configured with short-circuit electrical contact sets 3 on the chemical oxygen sensor 21 and the paramagnetic oxygen sensor 22, and the positions of the short-circuit electrical contact sets 3 on the two oxygen sensors 2 are different, two sets of detection electrical contact sets 4 are provided on the ventilation device 5, and each set of detection electrical contact set 4 includes two detection electrical contacts D1 that are electrically insulated. It may be provided that when the chemical oxygen sensor 21 is mounted to the housing 51 of the breathing apparatus 5 through the sensor adapter member 1, the two shorted electrical contacts B1 of the set of shorted electrical contacts 31 on the chemical oxygen sensor 21 can be electrically connected with the two detected electrical contacts D1 of the set of detected electrical contacts 41 on the breathing apparatus 5, respectively. When the paramagnetic oxygen sensor 22 is mounted to the ventilator 5 by the sensor adapting component 1, the two shorted electrical contacts B1 of the set of shorted electrical contacts 32 on the paramagnetic oxygen sensor 22 can be electrically connected with the two detected electrical contacts D1 of the set of detected electrical contacts 42 on the ventilator 5, respectively.
When the oxygen sensor 2 is connected to the housing 51 of the ventilator 5 through the sensor adapter 1, if the ventilator 5 detects that the two detection electrical contacts D1 in the detection electrical contact group 41 are short-circuited and the two detection electrical contacts D1 in the detection electrical contact group 42 are in an off state, the ventilator 5 determines that the oxygen sensor 2 connected to the housing 51 of the ventilator 5 through the sensor adapter 1 is the chemical oxygen sensor 21; if the ventilator 5 detects that the two detection electrical contacts D1 in the detection electrical contact group 42 are short-circuited, the two detection electrical contacts D1 in the detection electrical contact group 41 are in an off state, the ventilator 5 determines that the oxygen sensor 2 connected to the housing 51 of the ventilator 5 through the sensor adapter part 1 is the paramagnetic oxygen sensor 22, and the ventilator 5 can determine the type of the oxygen sensor 2 mounted to the ventilator 5 through the sensor adapter part 1 by detecting which of the two detection electrical contacts D1 in the detection electrical contact group 4 is connected, so that the electrical interface of the ventilator 5 can be compatible with the detection of the types of the different types of sensors 2, and the problem that the ventilator 5 has great difficulty in detecting the types of the different types of oxygen sensors 2 due to the replacement of a circuit board in the ventilator 5 is avoided.
Fig. 7 is a schematic view of a mounting structure of another oxygen sensor connection structure provided in an embodiment of the present invention, and fig. 8 is a schematic view of a mounting structure of another oxygen sensor connection structure provided in an embodiment of the present invention. With reference to fig. 1, 2, 7, and 8, the oxygen sensor connection structure may include two sensor adapter members 1, the two sensor adapter members 1 may be detachably connected to a chemical oxygen sensor 21 and a paramagnetic oxygen sensor 22, the two sensor adapter members 1 shown in fig. 7 and 8 may be connected to a housing 51 of the ventilation apparatus 5 through the same mounting structure S1, and the chemical oxygen sensor 21 is installed on the sensor adapter member 11 by screwing, that is, the chemical oxygen sensor 21 and the sensor adapter member 11 are fixedly installed through the mounting structures S2 and S3. The paramagnetic oxygen sensor 22 is installed on the sensor adapter 12 in a pluggable manner, that is, the paramagnetic oxygen sensor 22 and the sensor adapter 12 are fixedly installed through the installation structures S4 and S5.
When the oxygen sensor 2 in the ventilator 5 needs to be replaced, the sensor adapter part 1 and the oxygen sensor 2 installed on the sensor adapter part 1 can be replaced at the same time, the oxygen sensor 2 collects the oxygen concentration of the gas in the air suction branch 16 of the ventilator 5, and meanwhile, the sensor adapter part 1 is utilized to enable different types of oxygen sensors 2 to be connected to the shell 51 of the ventilator 5 through the sensor adapter part 1, so that the problem that the ventilator 5 is incompatible with multiple types of oxygen sensors 2 is solved. The different types of oxygen sensors 2 can be connected to the housing 51 of the ventilator 5 through the sensor adapter part 1, replacement and maintenance of the oxygen sensors 2 connected to the ventilator 5 can be achieved without removing the housing 51 of the ventilator 5, and a user can replace the oxygen sensors by himself.
In one embodiment, the first sensor type identification unit of the oxygen sensor connection structure may be provided as a shorting electrical contact group including two electrical contacts shorted together. Fig. 9 is a schematic diagram of another oxygen sensor type identification circuit structure according to an embodiment of the present invention. With reference to fig. 1 and 7 to 9, when the oxygen sensor 2 is connected to the housing 51 of the ventilator 5 through the sensor adaptor member 1, the shorting electrical contact group 3 may communicate with two electrically insulated detection electrical contacts D1 provided on the ventilator 5 corresponding to the shorting electrical contact group 3, and the ventilator 5 determines the type of the oxygen sensor 2 attached to the ventilator 5 according to whether the corresponding two detection electrical contacts D1 communicate with each other.
With reference to fig. 1 and fig. 7 to 9, when the oxygen sensor connection structure includes two sensor switching components 1, the oxygen sensor 2 and the corresponding sensor switching component 1 form a switching assembly 10, a short-circuit electrical contact group 3 may be disposed on the switching assembly 10 formed by the chemical oxygen sensor 21 and the corresponding sensor switching component 11, the short-circuit electrical contact group 3 is not disposed on the switching assembly 10 formed by the paramagnetic oxygen sensor 22 and the corresponding sensor switching component 12, the ventilation device 5 may determine the type of the connected oxygen sensor 2 according to whether the two corresponding detection electrical contacts D1 are connected, the determination process is similar to the process of implementing the type detection of the oxygen sensor 2 by the oxygen sensor type identification circuit having the structure shown in fig. 5, and details thereof are not repeated.
Fig. 10 is a schematic diagram of another oxygen sensor type identification circuit structure according to an embodiment of the present invention. With reference to fig. 1, 7, 8 and 10, when the oxygen sensor connection structure includes two sensor adapter parts 1, the connection assembly 10 composed of the chemical oxygen sensor 21 and the corresponding sensor adapter part 1 and the connection assembly 10 composed of the paramagnetic oxygen sensor 22 and the corresponding sensor adapter part 1 may be provided with the short electrical contact group 3, the positions of the short electrical contact groups 3 on the two connection assemblies 10 are different, and the ventilation device 5 is provided with two sets of detection electrical contact groups 4. The determination process is similar to the process of implementing the type detection of the oxygen sensor 2 by the oxygen sensor type identification circuit having the structure shown in fig. 6, and is not described again here.
The shorting contact group 3 is disposed on a switching assembly 10 formed by the oxygen sensor 2 and the corresponding sensor switching component 1, the shorting contact group 3 may be disposed on the oxygen sensor 2 in the switching assembly 10, or the shorting contact group 3 may be disposed on the sensor switching component 1 in the switching assembly 10.
Fig. 11 is a schematic diagram of another oxygen sensor type identification circuit structure according to an embodiment of the present invention. With reference to fig. 1 and 11, it may be provided that the detecting electrical contact set 4 on the ventilator 5 comprises an electrically insulated first detecting electrical contact D11 and a second detecting electrical contact D12, the detecting signal input H1 of the ventilator 5 is electrically connected to the corresponding first detecting electrical contact D11, and the detecting signal input H1 is connected to a first power signal VCC through an impedance element R, the second detecting electrical contact D12 is connected to a second power signal, for example, a ground signal GND, and the levels of the first power signal VCC and the second power signal GND are different. When the oxygen sensor or the sensor switching component 1 provided with the short-circuit electric contact group 3 is connected to the ventilation equipment 5, the two short-circuit electric contacts B1 in the short-circuit electric contact group 3 communicate the two detection electric contacts D1 in the detection electric contact group 4, and the detection signal input end H1 receives a low level. When the oxygen sensor connecting structure without the short-circuit electric contact group 3 is installed to the ventilation equipment, the two detection electric contacts D1 in the detection electric contact group 4 are in a disconnected state, the detection signal input end H1 receives a high level, and the ventilation equipment 5 can detect different types of oxygen sensors 2 according to the level of the detection signal input end H1 receiving the signal level.
In an embodiment, the ventilator may have integrated therein a signal processing circuit having filtering and level shifting functions. In an embodiment, as shown in fig. 11, the oxygen sensor 2 may be a paramagnetic oxygen sensor, and the first power signal VCC and the second power signal GND may also be electrically connected to the paramagnetic oxygen sensor to supply power to modules such as a light source in the paramagnetic oxygen sensor. Of course, the type of the oxygen sensor may also be identified by a chip or the like provided on the oxygen sensor or the sensor adapter member.
In an embodiment, the oxygen sensor connection structure may further include an electrical signal relay unit, and the oxygen sensor connection structure is configured to forward the detected oxygen concentration value of the oxygen sensor to the ventilator through the electrical signal relay unit. In an embodiment, the electrical signal switching unit is a connection for transmitting data related to oxygen concentration detection between the oxygen sensor and the ventilator, for example, the oxygen sensor may transmit an oxygen concentration acquisition signal to the ventilator through the electrical signal switching unit, and may also receive a transmission oxygen concentration detection control signal sent by the ventilator or a power supply signal for supplying power to the oxygen sensor through the electrical signal switching unit, and the like.
In one embodiment, the electrical signal switching unit may be configured to output the detection electrical contact for the oxygen concentration signal. Referring to fig. 1 to 11, the oxygen concentration signal output detection electrical contact is provided to include a first oxygen concentration signal output detection electrical contact V1+ and a second oxygen concentration signal output detection electrical contact V1-. When the oxygen sensor 2 is connected to the housing 51 of the ventilator 5 through the sensor adapter member 1, the first oxygen concentration signal output detection electrical contact V1+ may be set to be correspondingly electrically connected to the first oxygen concentration signal input detection electrical contact V2+ on the ventilator 5, the second oxygen concentration signal output detection electrical contact V1-may be correspondingly electrically connected to the second oxygen concentration signal input detection electrical contact V2-on the ventilator 5, and the ventilator 5 detects the oxygen concentration entering the oxygen sensor 2 according to the oxygen concentration detection signals on the first oxygen concentration signal input detection electrical contact V2+ and the second oxygen concentration signal input detection electrical contact V2-.
In one embodiment, the oxygen sensor may be a chemical oxygen sensor, the chemical oxygen cell is a sealed container containing two electrodes, the cathode is a sheet of PTFE (polytetrafluoroethylene) coated with active catalyst, the anode is a lead block, and the sealed container has only one capillary pore at the top to allow oxygen to pass into the working electrode. The two electrodes are connected to two pins protruding from the surface of the oxygen sensor 2, i.e., a first oxygen concentration signal output detection contact V1+ and a second oxygen concentration signal output detection contact V1-of the oxygen sensor 2, through current collectors. The chemical oxygen cell is filled with electrolyte solution, so that different ions can be exchanged between electrodes, the flow rate of oxygen entering the oxygen sensor 2 depends on the size of capillary micropores at the top of the oxygen sensor 2, when the oxygen reaches a working electrode, the electrodes respectively react, the magnitude of current generated by the reaction correspondingly depends on the concentration of the oxygen, a known resistor can be connected in series between a first oxygen concentration signal output detection contact V1+ and a second oxygen concentration signal output detection contact V1-in the chemical oxygen cell, and the ventilation device 5 can detect the concentration of the oxygen entering the chemical oxygen sensor by acquiring electromotive force between the first oxygen concentration signal input detection contact V2+ and the second oxygen concentration signal input detection contact V2-.
In one embodiment, the oxygen sensor 2 may also be a paramagnetic oxygen sensor, wherein two glass balls filled with nitrogen are fixed on a rotatable bracket between two magnetic poles of a gas chamber of the paramagnetic oxygen sensor. Oxygen in the tested gas is absorbed into the magnetic field to generate acting force on the sphere and a moment on the sphere axis, and the magnitude of the moment is in a linear relation with the concentration of the oxygen. The paramagnetic oxygen sensor is also provided with a light source and a photoelectric sensor, the middle of the bracket is provided with a mirror, the mirror in the middle of the bracket can reflect the light source to the photoelectric sensor to obtain the deflection displacement of the bracket, the photoelectric sensor feeds back signals to a coil around the bracket to generate a feedback current, similarly, the magnitude of the feedback current is correspondingly dependent on the oxygen concentration, the feedback current flows through a first oxygen concentration signal output detection contact V1+ and a second oxygen concentration signal output detection contact V1-on the surface of the paramagnetic oxygen sensor, a known resistor is connected in series between the first oxygen concentration signal output detection contact V1+ and the second oxygen concentration signal output detection contact V1-inside the paramagnetic oxygen sensor, and the ventilation equipment 5 can detect the oxygen concentration entering the paramagnetic oxygen sensor 2 by obtaining the electromotive force between the first oxygen concentration signal input detection contact V2+ and the second oxygen concentration signal input detection contact V2-.
The aeration equipment utilizes the first oxygen concentration signal input to detect the electrical contact V2+ and the second oxygen concentration signal input to detect the electrical contact V2 to make the electrical interface of the aeration equipment 5 compatible with the process of detecting the oxygen concentration of the oxygen sensors 2 of different types, thereby avoiding the problem that the difficulty of detecting the oxygen concentration of the oxygen sensors 2 of different types is high when the aeration equipment 5 is replaced due to the fact that a circuit board in the aeration equipment 5 is replaced.
The embodiment of the present invention further provides a ventilation apparatus detachably connected to the connection structure of the oxygen sensor described in the above embodiment, with reference to fig. 1 to 4 and fig. 7 to 8, the ventilation apparatus includes a housing 51, an air source interface 18 disposed on the housing 51, and an inhalation branch 16, an exhalation branch 19 and a control unit 17 enclosed inside the housing 51, and a mounting structure matched with the sensor adapter component 1 connected to the oxygen sensor 2 is disposed on the housing 51 of the ventilation apparatus 5. When the at least one oxygen sensor 2 is connected to the housing 51 of the ventilator device 5 via the sensor adapter 1, the air path interface 211 of the oxygen sensor 2 may communicate with the inhalation branch 16 of the ventilator device 5. In an embodiment, the type of oxygen sensor 2 connected to the ventilator 5 is a paramagnetic oxygen sensor 21 or a chemical oxygen sensor 22, and the ventilator 5 may be a ventilator or an anesthesia machine.
In an embodiment, with reference to fig. 1 and fig. 2, the ventilator 5 may further include a gas path sampling outlet 171 disposed on the housing 51, and the gas path sampling outlet 171 connects the inhalation branch 16 with the oxygen sensor 2 or the gas path adapter 161 of the oxygen sensor connection structure, so as to implement the detection of the oxygen concentration of the gas flowing through the inhalation branch 16 by the oxygen sensor.
In an embodiment, while the oxygen sensor 2 collects the oxygen concentration of the gas flowing through the air suction branch 16 of the ventilator 5, the sensor adapter component 1 is utilized to enable different types of oxygen sensors 2 to be connected to the shell 51 of the ventilator 5 through the sensor adapter component 1, so that the problem that the oxygen sensor 2 needs to occupy a large space when the installation interface of the ventilator 5 is incompatible is solved, the size of the ventilator 5 is reduced, the portability of the ventilator 5 is improved, and the replacement and maintenance of the oxygen sensor 2 connected to the ventilator 5 can be realized without dismantling the shell 51 of the ventilator 5.
In an embodiment, the ventilator may further comprise a second oxygen sensor type identification unit by which the ventilator identifies the type of oxygen sensor connected to the ventilator. Fig. 12 is a schematic diagram of another oxygen sensor type identification circuit structure according to an embodiment of the present invention. With reference to fig. 1 to 4, 7, 8 and 12, the second oxygen sensor type identification unit may be configured to include digital signal type electrical contacts, for example, a digital signal type output electrical contact E1 is provided on the oxygen sensor 2, a digital signal type input electrical contact F1 is provided on the ventilator 5, and when the oxygen sensor 2 is connected to the housing 51 of the ventilator 5 through the sensor adapter 1, the digital signal type output electrical contacts E1 on the oxygen sensor 2 are electrically connected to the corresponding digital signal type input electrical contacts F1, respectively. The interaction formats of the sensors in the digital signals corresponding to the different types of oxygen sensors 2 can be set to be different, and the ventilator 5 can recognize the types of the different types of oxygen sensors 2 by analyzing the type of the digital signal input to the electrical contact F1 or whether the communication is successful.
In one embodiment, the oxygen sensor may be configured to wirelessly communicate with the ventilator in a different wireless communication format between the oxygen sensor and the ventilator, and the ventilator may determine the type of oxygen sensor attached to the ventilator based on the wireless communication format.
In an embodiment, the ventilator may further include a transceiver unit, and the ventilator receives the oxygen concentration detection value of the oxygen sensor through the transceiver unit. Referring to the above embodiment, the electrical signal switching unit and the transceiver unit are connections for transmitting data related to oxygen concentration detection between the oxygen sensor and the ventilator, for example, the oxygen sensor may transmit an oxygen concentration acquisition signal to the ventilator through the electrical signal switching unit, and may also receive a transmission oxygen concentration detection control signal sent by the ventilator or a power supply signal for supplying power to the oxygen sensor through the electrical signal switching unit. The ventilation device can transmit an oxygen concentration detection control signal or a power supply signal for supplying power to the oxygen sensor to the ventilation device through the transceiver unit, and can also receive an oxygen concentration acquisition signal sent by the oxygen sensor through the transceiver unit.
The electric signal switching unit and the transceiver unit can be in wired communication or wireless communication. In addition, the transceiver unit may also be configured to be directly connected to the oxygen sensor, or the transceiver unit may also be configured to be connected to the electrical signal switching unit, so as to implement signal transmission between the oxygen sensor and the ventilation device. Of course, the oxygen sensor and the ventilator may be directly connected in a wired or wireless manner, so as to transmit the relevant data such as the oxygen concentration detection value, the control signal and the like between the oxygen sensor and the ventilator.
Embodiments of the present invention further provide a ventilation system, which includes at least one oxygen sensor, the oxygen sensor connection structure described in the above embodiments, and the ventilation apparatus described in the above embodiments, wherein the at least one oxygen sensor is detachably connected to the housing of the ventilation apparatus through the oxygen sensor connection structure. In one embodiment, the oxygen sensor is a paramagnetic oxygen sensor or a chemical oxygen sensor. Since the embodiment of the present invention includes the oxygen sensor connection structure and the ventilation device described in the above embodiments, the advantageous effects described in the above embodiments are achieved, and details are not described here.
Claims (12)
1. An oxygen sensor attachment structure for attaching at least one oxygen sensor to a housing of a ventilator, comprising:
the sensor adapter component is matched with an oxygen sensor mounting structure of the ventilation equipment, the sensor adapter component is detachably connected with the oxygen sensor, and the oxygen sensor is connected to a space area outside the shell through the sensor adapter component;
when at least one oxygen sensor is connected to the shell of the ventilation equipment through the sensor adapter part, the air path interface of the oxygen sensor is communicated with the air suction branch of the ventilation equipment.
2. The oxygen sensor connecting structure according to claim 1, further comprising:
a first sensor type identification unit, the oxygen sensor connection structure identifying the type of the connected oxygen sensor according to the first sensor type identification unit.
3. The oxygen sensor connecting structure according to claim 2, wherein the type of the connected oxygen sensor is a paramagnetic oxygen sensor or a chemical oxygen sensor.
4. The oxygen sensor connecting structure according to claim 1, further comprising:
and the air path adapter part is arranged to connect the air path interface of the oxygen sensor and the air suction branch of the ventilation equipment.
5. The oxygen sensor connecting structure according to claim 1, further comprising:
and the oxygen sensor connecting structure forwards the oxygen concentration detection value of the oxygen sensor to the ventilation equipment through the electric signal switching unit.
6. A ventilation device, which is detachably connected with the oxygen sensor connection structure of any one of claims 1 to 5, and comprises a housing, an air source interface arranged on the housing, an inspiration branch, an expiration branch and a control unit, wherein the inspiration branch, the expiration branch and the control unit are packaged in the housing, and an oxygen sensor mounting structure matched with a sensor adapter part connected with the oxygen sensor is arranged on the housing of the ventilation device.
7. The ventilator of claim 6, further comprising:
a second oxygen sensor type identification unit by which the ventilator identifies the type of the oxygen sensor connected to the ventilator housing.
8. The ventilator of claim 7, wherein the type of oxygen sensor coupled to the ventilator housing is a paramagnetic oxygen sensor or a chemical oxygen sensor.
9. The ventilator of claim 6, further comprising:
a transceiver unit through which the ventilator receives an oxygen concentration detection value of the oxygen sensor.
10. The ventilator of claim 6, further comprising:
and the gas path sampling outlet is arranged on the shell and is arranged to be connected with the gas suction branch and the oxygen sensor or a gas path switching part of the oxygen sensor connecting structure.
11. The ventilator of claim 6, wherein the ventilator is a ventilator or an anesthesia machine.
12. A ventilation system comprising at least one oxygen sensor, the oxygen sensor attachment structure of any one of claims 1-5, and the ventilation device of any one of claims 6-11.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/101163 WO2020034217A1 (en) | 2018-08-17 | 2018-08-17 | Oxygen sensor connection structure, ventilation device, and ventilation system |
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| CN112135654A CN112135654A (en) | 2020-12-25 |
| CN112135654B true CN112135654B (en) | 2023-01-06 |
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| CN102107037A (en) * | 2009-12-28 | 2011-06-29 | 周常安 | Air delivery system |
| WO2016140980A1 (en) * | 2015-03-02 | 2016-09-09 | Covidien Lp | Medical ventilator, method for replacing an oxygen sensor on a medical ventilator, and medical ventilator assembly |
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| JPH09122103A (en) * | 1995-10-30 | 1997-05-13 | Aisan Ind Co Ltd | Respiration monitor |
| JP4863960B2 (en) * | 2007-10-12 | 2012-01-25 | 日立オートモティブシステムズ株式会社 | Oxygen sensor inspection method |
| EP2340073B1 (en) * | 2008-10-17 | 2016-09-21 | Koninklijke Philips N.V. | Porting block for a medical ventilator |
| CN102441213B (en) * | 2010-10-09 | 2015-08-19 | 深圳迈瑞生物医疗电子股份有限公司 | Oxygen cell holder assembly, oxygen cell assembly and anesthetic machine |
| GB2502981B (en) * | 2012-06-12 | 2018-11-07 | Gyrus Medical Ltd | Electrosurgical instrument & system |
| CN203591510U (en) * | 2013-12-10 | 2014-05-14 | 北京易世恒电子技术有限责任公司 | Multifunctional safety valve |
| US20150238721A1 (en) * | 2014-02-24 | 2015-08-27 | Vetland Medical Sales and Services, LLC | Electronic E-Cylinder |
| CN104784793B (en) * | 2015-04-14 | 2017-10-10 | 深圳市科曼医疗设备有限公司 | The lambda sensor automatic calibrating method of lung ventilator and lung ventilator |
| ES2966697T3 (en) * | 2015-11-13 | 2024-04-23 | Moritz Thorsten | Respirator |
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- 2018-08-17 WO PCT/CN2018/101163 patent/WO2020034217A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102107037A (en) * | 2009-12-28 | 2011-06-29 | 周常安 | Air delivery system |
| WO2016140980A1 (en) * | 2015-03-02 | 2016-09-09 | Covidien Lp | Medical ventilator, method for replacing an oxygen sensor on a medical ventilator, and medical ventilator assembly |
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| CN112135654A (en) | 2020-12-25 |
| WO2020034217A1 (en) | 2020-02-20 |
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