WO2020034217A1 - 氧传感器连接结构、通气设备以及通气系统 - Google Patents

氧传感器连接结构、通气设备以及通气系统 Download PDF

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Publication number
WO2020034217A1
WO2020034217A1 PCT/CN2018/101163 CN2018101163W WO2020034217A1 WO 2020034217 A1 WO2020034217 A1 WO 2020034217A1 CN 2018101163 W CN2018101163 W CN 2018101163W WO 2020034217 A1 WO2020034217 A1 WO 2020034217A1
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WIPO (PCT)
Prior art keywords
oxygen sensor
ventilation device
sensor
oxygen
connection structure
Prior art date
Application number
PCT/CN2018/101163
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English (en)
French (fr)
Inventor
姚刚
艾世明
方明东
郑欣
Original Assignee
深圳迈瑞生物医疗电子股份有限公司
深圳迈瑞科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 深圳迈瑞生物医疗电子股份有限公司, 深圳迈瑞科技有限公司 filed Critical 深圳迈瑞生物医疗电子股份有限公司
Priority to PCT/CN2018/101163 priority Critical patent/WO2020034217A1/zh
Priority to CN201880093640.8A priority patent/CN112135654B/zh
Publication of WO2020034217A1 publication Critical patent/WO2020034217A1/zh

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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

Definitions

  • the present disclosure relates to the technical field of medical equipment, for example, to an oxygen sensor connection structure, a ventilation device, and a ventilation system.
  • the oxygen sensor is an important part of the ventilator.
  • the ventilator monitors the oxygen concentration in the mixed gas delivered to the patient through 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. However, the chemical oxygen battery needs to consume the internal lead level during the measurement process. The service life is one to two years and it needs to be replaced regularly. If the chemical oxygen battery exceeds the service life and is not replaced on schedule, it may cause inaccurate monitoring of the oxygen concentration value, seriously affect the safety of the ventilator, and bring risks to the patient.
  • the paramagnetic oxygen sensor uses the pure physical characteristics of oxygen. There is basically no loss in the measurement process, long service life, free replacement during the life cycle of the ventilator, long-term use will not cause inaccuracy, and high safety. And reliability.
  • the ventilator can only be configured with one type of sensor when used, and its installation interface cannot be compatible with different types of oxygen sensors.
  • the oxygen sensor is generally installed inside the ventilator, which causes inconvenience in replacement and maintenance of the oxygen sensor.
  • the disclosure provides an oxygen sensor connection structure, a ventilation device, and a ventilation system. While realizing the oxygen sensor to collect the oxygen concentration of the gas flowing through the inhalation branch of the ventilation device, different types of oxygen sensors can be connected to the component through the sensor. Connected to the casing of the ventilation device, the ventilation device is compatible with different types of oxygen sensors, and the oxygen sensor connected to the ventilation device can be replaced and repaired without removing the casing of the ventilation device.
  • the present disclosure provides an oxygen sensor connection structure for connecting at least one oxygen sensor to a housing of a ventilation device, including:
  • At least one sensor transfer member that cooperates with an oxygen sensor mounting structure of the ventilation device, and the sensor transfer member is detachably connected to the oxygen sensor;
  • the gas path interface of the oxygen sensor is connected to the suction branch of the ventilation device.
  • the oxygen sensor connection structure further includes:
  • a first sensor type identification unit, and the oxygen sensor connection structure identifies the type of the connected oxygen sensor according to the first sensor type identification unit.
  • the type of the connected oxygen sensor is a paramagnetic oxygen sensor or a chemical oxygen sensor.
  • the oxygen sensor connection structure further includes:
  • the gas path switching component is configured to connect the gas path interface of the oxygen sensor and the suction branch of the ventilation device.
  • the oxygen sensor connection structure further includes:
  • the electrical signal transfer unit, and the oxygen sensor connection structure forwards the oxygen concentration detection value of the oxygen sensor to the ventilation device through the electrical signal transfer unit.
  • the present disclosure also provides a ventilation device for detachably connecting the above-mentioned oxygen sensor connection structure, including a housing, an air source interface provided on the housing, an inhalation branch, an expiration branch, and A control unit, the housing of the ventilation device is provided with an oxygen sensor mounting structure that cooperates with a sensor transfer member connected to the oxygen sensor;
  • the gas path interface of the oxygen sensor communicates with the suction branch of the ventilation device.
  • the ventilation device further includes:
  • a second oxygen sensor type identification unit through which the ventilation device recognizes the type of the oxygen sensor connected to the ventilation device housing.
  • the type of the oxygen sensor connected to the housing of the ventilation device is a paramagnetic oxygen sensor or a chemical oxygen sensor.
  • the ventilation device further includes:
  • a transceiver unit, and the ventilation device receives an oxygen concentration detection value of the oxygen sensor through the transceiver unit.
  • the ventilation device further includes:
  • a gas path sampling outlet which is arranged on the housing, and the gas path sampling outlet is configured to connect the suction branch and the oxygen sensor or the oxygen sensor connection structure as a gas path switch component.
  • the ventilation device is a ventilator or an anesthesia machine.
  • the present disclosure also provides a ventilation system including at least one oxygen sensor, the above-mentioned oxygen sensor connection structure, and the above-mentioned ventilation device.
  • the at least one oxygen sensor is detachably connected to a housing of the ventilation device through the oxygen sensor connection structure. .
  • the oxygen sensor is a paramagnetic oxygen sensor or a chemical oxygen sensor.
  • the present disclosure provides an oxygen sensor connection structure, a ventilation device, and a ventilation system.
  • At least one oxygen sensor can be connected to a housing of the ventilation device by setting the oxygen sensor connection structure.
  • the oxygen sensor includes at least one sensor transfer member, and the sensor transfer member Cooperating with the oxygen sensor installation structure of the ventilation device, the sensor transfer component is detachably connected to the oxygen sensor.
  • the sensor transfer component is detachably connected to the oxygen sensor.
  • the sensor transfer component is used to enable different types of oxygen sensors to be connected to the housing of the ventilation device through the sensor transfer component.
  • FIG. 1 is a schematic structural diagram of a ventilation device according to an embodiment of the present invention
  • FIG. 2 is a schematic internal diagram of a ventilation device according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a sensor transfer component according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of another sensor transfer component according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a type recognition circuit for an oxygen sensor according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an installation structure of another oxygen sensor connection structure according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an installation structure of another oxygen sensor connection structure according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention.
  • FIG. 1 is a schematic structural diagram of a ventilation device according to an embodiment of the present invention
  • FIG. 2 is a schematic internal diagram of a ventilation device according to an embodiment of the present invention
  • FIG. 3 is a sensor transfer component provided by an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of another sensor transfer component according to an embodiment of the present invention.
  • the oxygen sensor connection structure includes at least one sensor transfer member 1, the sensor transfer member 1 cooperates with the oxygen sensor mounting structure of the ventilation device 5, and the sensor transfer member 1 and the oxygen sensor 2 are detachably connected,
  • the oxygen sensor connection structure can connect at least one oxygen sensor 2 to the housing 51 of the ventilation device 5.
  • an oxygen sensor connection structure may be provided including a sensor adapter part 1 that cooperates with the oxygen sensor installation structure at the ventilation device position A.
  • a sensor adapter part 1 that cooperates with the oxygen sensor installation structure at the ventilation device position A.
  • screws may be used to attach the structure through the installation structure S1
  • the sensor connection member 1 is fixed at a position A of the ventilation device 5.
  • the ventilation device 5 includes a casing 51, an air source interface 18 provided on the casing 51, and an inhalation branch 16, an exhalation branch 19, and a control unit 17 enclosed inside the casing.
  • the air source interface 18 is in communication with the inhalation branch 16, and the inhalation branch 16 and the exhalation branch 19 are connected to the patient's mouth and nose through the patient line.
  • the control unit 17 can control the opening and closing of the inhalation branch 16 and the exhalation branch 19 respectively to ensure the normal use of the ventilation device 5.
  • the sensor transfer unit 1 can be detachably installed with a chemical oxygen sensor 21 or a paramagnetic oxygen sensor 22.
  • the installation structure between the two oxygen sensors 2 and the sensor transfer unit 1 is different.
  • a chemical oxygen sensor 21 can be installed on the sensor transfer by screwing Part 1 is fixed between the chemical oxygen sensor 21 and the sensor transfer part 1 through the mounting structures S2 and S3.
  • the paramagnetic oxygen sensor 22 can be plugged and installed on the sensor transfer part 1, namely the paramagnetic oxygen sensor 22. It is fixedly mounted with the sensor transfer member 1 through mounting structures S4 and S5.
  • FIG. 3 is a schematic structural diagram of a sensor adapter part in which a chemical oxygen sensor 21 according to an embodiment of the present invention is threadedly mounted on the sensor adapter part 1
  • FIG. 4 is a paramagnetic oxygen sensor 22 provided in an embodiment of the present invention that can be plugged and installed in The structure diagram of the sensor transfer part on the sensor transfer part 1.
  • the chemical oxygen sensor 21 and the paramagnetic oxygen sensor 22 may be installed on the sensor transfer member 1 in other ways, and the installation methods between different oxygen sensors 2 and the sensor transfer member 1 may be set according to requirements. .
  • the embodiment of the present invention does not limit the installation manner of the sensor transfer component 1 to the ventilation device 5. In this way, using the sensor transfer member 1 enables different kinds of oxygen sensors 2 to be connected to the housing 51 of the ventilation device 5 through the sensor transfer member 1, and solves the problem that the ventilation device 5 is not compatible with multiple oxygen sensors 2.
  • the oxygen sensor 2 can be connected to the housing 51 of the ventilation device 5 through the sensor transfer member 1, that is, the oxygen sensor 2 can be connected to the ventilation branch 5 provided with the suction branch 16 through the sensor transfer member 1.
  • the oxygen sensor 2 connected to the ventilation device 5 can be realized without removing the housing 51 of the ventilation device 5. Replace and repair.
  • the ventilation device 1 may further include a mounting door 20, and a side on which the mounting door 20 is provided is hingedly disposed on the body 112 of the housing 51.
  • the installation door 20 only needs to be opened, which is simple and convenient.
  • a locking structure such as a buckle, a screw, etc. may also be provided between the installation door 20 and the body 112 of the housing 51 so that the installation door 20 can be locked on the body 112 after the installation door 20 is closed.
  • the casing 51 of the ventilation device refers to a portion of the casing that needs to be disassembled by a serviceman with a tool.
  • the installation door 20 may also be replaced with another shielding structure to cooperate with the housing 51 to accommodate the oxygen sensor 2 together.
  • the mounting groove 113 may be provided only on the body 112, and the oxygen sensor 2 is wholly or partially accommodated in the mounting groove 113.
  • the oxygen sensor 2 may only be disposed on the outer surface of the body 112, and no additional installation door 20 is provided to facilitate the installation of the oxygen sensor 2.
  • the oxygen sensor 2 may also be directly installed on the housing 51. On the outside, the mounting groove 113 and the mounting door 20 are not provided.
  • the gas path interface 211 of the oxygen sensor 2 can communicate with the suction branch 16 of the ventilation device 5.
  • the oxygen sensor connection structure may further include an air path connection member 161 connecting the air path interface 211 of the oxygen sensor 2 and the suction branch 16 of the ventilation device 5.
  • the gas path interface 211 of the oxygen sensor 2 is connected to the inhalation branch 16 of the ventilation device 5 through the air path transfer member 161.
  • the oxygen sensor 2 realizes the detection of the oxygen concentration of the gas in the inhalation branch 16.
  • the oxygen sensor connection structure may further include a first sensor type identification unit that identifies the type of the connected oxygen sensor.
  • the type of the oxygen sensor connected to the ventilation device may be a paramagnetic oxygen sensor or a chemical oxygen sensor, that is, the oxygen sensor connection structure may be provided with a first sensor type identification unit to determine that the oxygen sensor connected to the ventilation device is paramagnetic.
  • the oxygen sensor is also a chemical oxygen sensor.
  • the first sensor type identification unit may be set as a short-circuited electrical contact group, and the short-circuited electrical contact group includes 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.
  • the short-circuited electrical contact group 3 can communicate with the two electrically insulated portions of the ventilation device 5 corresponding to the short-circuited electrical contact group 3.
  • the electrical contact D1 is detected, and the ventilation device 5 determines the type of the oxygen sensor 2 attached to the ventilation device 5 according to whether the corresponding two detection electrical contacts D1 are connected.
  • a short-circuit electrical contact group 3 can be set on the oxygen sensor 2.
  • a chemical oxygen sensor 21 and a paramagnetic oxygen sensor 22 can be provided.
  • One of them is provided with a short-circuit electrical contact group 3, for example, a chemical oxygen sensor 21 is provided with a short-circuit electrical contact group 3, a paramagnetic oxygen sensor 22 is not provided with a short-circuit electrical contact group 3, and a ventilation device 5 is provided.
  • a set of detection electrical contact groups 4 is provided, and the detection electrical contact groups 4 include two detection electrical contacts D1 that are electrically insulated.
  • the type of the connected oxygen sensor 2 is distinguished by shorting the voltage difference between the two electrical contacts B1 in the electrical contact group 3, for example, when the ventilation device 5 detects that the voltage difference between the two detected electrical contacts D1 is When it is low, it is determined that the connected oxygen sensor 2 is a chemical oxygen sensor 21. When the ventilation device 5 detects that the voltage difference between the two detection electrical contacts D1 is high, it is determined that the connected oxygen sensor 2 is a paramagnetic oxygen sensor 22 .
  • the short-circuited electrical contact group 3 and the detection electrical contact group 4 may both include one electrical contact, and the two electrical contacts in the short-circuited electrical contact group 3 and the detection electrical contact group 4 are connected and disconnected When open, the voltage on the electrical contacts is different.
  • the ventilation device 5 can also determine the type of the oxygen sensor 2 by detecting the voltage of the electrical contacts.
  • the oxygen sensor 2 connected to the housing 51 of the ventilation device 5 when the oxygen sensor 2 connected to the housing 51 of the ventilation device 5 is replaced, there is no need to replace the sensor transfer member 1, and the oxygen sensor 2 can be replaced only by removing the oxygen sensor 2 on the sensor transfer member 1. .
  • the ventilation device 5 When the oxygen sensor 2 is mounted to the ventilation device 5 through the sensor transfer member 1, if the ventilation device 5 detects a short circuit between the two detection electrical contacts D1, the ventilation device 5 can determine that the oxygen sensor is mounted to the ventilation device 5 through the sensor transfer member 1. 2 is a chemical oxygen sensor 21; if the ventilation device 5 detects that the two detection electrical contacts D1 are in an open state, the ventilation device 5 can determine that the oxygen sensor 2 mounted to the ventilation device through the sensor transfer member 1 is a paramagnetic oxygen sensor 22 .
  • This enables the electrical interface of the ventilation device 5 to be compatible with the detection of different types of oxygen sensors 2 and avoids the problem that it is difficult for the ventilation device to perform type detection on different types of oxygen sensors 2 caused by replacing the circuit
  • FIG. 6 is a schematic structural diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention.
  • the oxygen sensor connection structure includes a sensor transfer component 1, and a chemical oxygen sensor 21 and a paramagnetic oxygen sensor 22 may also be provided with a short-circuit electrical contact group 3.
  • the oxygen sensor 2 is provided with a short-circuited electrical contact group 3 at different positions.
  • the ventilation device 5 is provided with two sets of detection electrical contact groups 4. Each set of detection electrical contact groups 4 includes two detection electrical contacts D1 that are electrically insulated.
  • the two shorted electrical contacts B1 in the short electrical contact group 31 on the chemical oxygen sensor 21 can be separately connected to the ventilation device.
  • the two detection electrical contacts D1 in the detection electrical contact group 41 on 5 are electrically connected.
  • the paramagnetic oxygen sensor 22 is mounted to the ventilation device 5 through the sensor transfer member 1
  • the two shorted electrical contacts B1 in the short electrical contact group 32 on the paramagnetic oxygen sensor 22 can be separately connected to the ventilation device 5.
  • the two detection electrical contacts D1 in the detection electrical contact group 42 are electrically connected.
  • the ventilation device 5 When the oxygen sensor 2 is connected to the casing 51 of the ventilation device 5 through the sensor transfer part 1, if the ventilation device 5 detects that the two detection electrical contacts D1 in the detection electrical contact group 41 are short-circuited, and detects two detections in the electrical contact group 42 The electrical contact D1 is in an open state, and the ventilation device 5 determines that the oxygen sensor 2 connected to the housing 51 of the ventilation device 5 through the sensor transfer member 1 is a chemical oxygen sensor 21; if the ventilation device 5 detects the detection in the electrical contact group 42 The two detection electrical contacts D1 of the tester are short-circuited, the two detection electrical contacts D1 in the detection electrical contact group 41 are in an open state, and the ventilation device 5 determines that the sensor 2 is connected to the oxygen sensor 2 of the casing 51 of the ventilation device 5 through the sensor transfer member 1 For the paramagnetic oxygen sensor 22, the ventilation device 5 can determine the type of the oxygen sensor 2 installed to the ventilation device 5 through the sensor transfer part 1 by detecting which of the two detection electrical contacts D1 in the detection electrical contact
  • FIG. 7 is a schematic diagram of an installation structure of another oxygen sensor connection structure according to an embodiment of the present invention
  • FIG. 8 is a schematic diagram of an installation structure of another oxygen sensor connection structure provided by an embodiment of the present invention.
  • the oxygen sensor connection structure may include two sensor transfer members 1, and the two sensor transfer members 1 may be detachably connected to the chemical oxygen sensor 21 and the paramagnetic oxygen sensor 22.
  • the two sensor transfer parts 1 shown in FIG. 7 and FIG. 8 can be connected to the housing 51 of the ventilation device 5 through the same mounting structure S1, and a chemical oxygen sensor 21 is provided on the sensor transfer part 11 by screwing, that is, the chemical oxygen sensor 21 and the sensor transfer member 11 are fixedly mounted by mounting structures S2 and S3.
  • the paramagnetic oxygen sensor 22 can be plugged and installed on the sensor transfer member 12, that is, the paramagnetic oxygen sensor 22 and the sensor transfer member 12 are fixedly installed through the mounting structures S4 and S5.
  • the sensor transfer member 1 and the oxygen sensor 2 installed on the sensor transfer member 1 can be replaced at the same time.
  • the oxygen sensor 2 can be used to inhale the branch 16 of the ventilation device 5
  • the sensor transfer unit 1 is used to enable different types of oxygen sensors 2 to be connected to the housing 51 of the ventilation device 5 through the sensor transfer unit 1, which solves the problem that the ventilation device 5 is not compatible with multiple oxygen sensors. 2 issues.
  • Different types of oxygen sensors 2 can be connected to the housing 51 of the ventilation device 5 through the sensor transfer member 1, and the oxygen sensor 2 connected to the ventilation device 5 can be replaced and repaired without removing the housing 51 of the ventilation device 5. You can also replace the oxygen sensor yourself.
  • the first sensor type identification unit that can be provided with the oxygen sensor connection structure is a shorted electrical contact group, and the shorted electrical contact group includes two electrical contacts that are shorted together.
  • FIG. 9 is a schematic structural diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention.
  • the short-circuit electrical contact group 3 can communicate with the ventilation device 5 corresponding to the short-circuit electrical contact group.
  • the two electrically detecting two electrical contacts D1 provided in the 3 are determined, and the ventilation device 5 determines the type of the oxygen sensor 2 installed to the ventilation device 5 according to whether the corresponding two detecting electrical contacts D1 are connected.
  • the oxygen sensor connection structure includes two sensor transfer parts 1, the oxygen sensor 2 and the corresponding sensor transfer part 1 constitute a transfer assembly 10, and a chemical oxygen sensor 21 and a corresponding
  • the short-circuit electrical contact group 3 is provided on the short-circuit electrical contact group 3 composed of the sensor transition component 11, and the short-circuit electrical contact is not provided on the short-circuit electrical contact group 3 formed by the paramagnetic oxygen sensor 22 and the corresponding sensor transition component 12.
  • the ventilation device 5 can determine the type of the connected oxygen sensor 2 according to whether the corresponding two detection electrical contacts D1 are connected.
  • the determination process and the oxygen sensor type recognition circuit with the structure shown in FIG. 5 are used to implement the type detection of the oxygen sensor 2. Similarly, I will not repeat them here.
  • FIG. 10 is a schematic structural diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention.
  • a chemical oxygen sensor 21 and a corresponding sensor transfer part 1 may also be provided with a transfer assembly 10 and a compliant arrangement.
  • the short-circuit electrical contact group 3 is provided on each of the transfer components 10 composed of the magnetic oxygen sensor 22 and the corresponding sensor transfer component 1.
  • the two short-circuit electrical contact groups 3 are arranged on the two transfer components 10, and ventilation is provided.
  • the device 5 is provided with two sets of detection electric contact groups 4. The determination process is similar to the process in which the oxygen sensor type recognition circuit of the structure shown in FIG. 6 implements the oxygen sensor 2 type detection, and is not repeated here.
  • the short-circuited electrical contact group 3 is arranged on the oxygen sensor 2 and the corresponding sensor transfer member 1, and the short-circuited electrical contact group 3 can be arranged on the oxygen sensor 2 in the transfer module 10. Alternatively, a short-circuit electrical contact group 3 may also be provided on the sensor transfer member 1 in the transfer assembly 10.
  • FIG. 11 is a schematic structural diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention.
  • the detection electrical contact group 4 on the ventilation device 5 may include a first detection electrical contact D11 and a second detection electrical contact D12 that are electrically insulated.
  • the detection signal input terminal H1 of the ventilation device 5 and The corresponding first detection electrical contact D11 is electrically connected, and the detection signal input terminal H1 is connected to the first power signal VCC through the impedance element R, and the second detection electrical contact D12 is connected to the second power signal.
  • the second power signal is, for example, The ground signal GND, the first power signal VCC and the second power signal GND have different levels.
  • the two shorted electrical contacts B1 in the shorted electrical contact group 3 will detect the The two detection electrical contacts D1 are connected, and the detection signal input terminal H1 receives a low level.
  • the oxygen sensor connection structure without short-circuited electrical contact group 3 is installed to the ventilation device, two detection electrical contacts D1 in detection electrical contact group 4 are in an open state, and the detection signal input terminal H1 receives a high level.
  • the ventilation device 5 can detect different types of oxygen sensors 2 according to the level of the received signal level at the detection signal input terminal H1.
  • a signal processing circuit having filtering and level shifting functions may be integrated in the ventilation device.
  • 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, which is a paramagnetic oxygen sensor.
  • Light source and other modules can also be identified by a chip provided on the oxygen sensor or the sensor transfer component.
  • the oxygen sensor connection structure may further include an electric signal transfer unit, and the oxygen sensor connection structure is configured to forward the oxygen concentration detection value of the oxygen sensor to the ventilation device through the electric signal transfer unit.
  • the electrical signal transfer unit is a connection for transmitting oxygen concentration detection related data between the oxygen sensor and the ventilation device.
  • the oxygen sensor can transmit an oxygen concentration acquisition signal to the ventilation device through the electrical signal transfer unit, or The electric signal switching unit receives a transmission oxygen concentration detection control signal or a power signal for powering an oxygen sensor, etc., sent by the ventilation device.
  • the electrical signal switching unit may be set as an oxygen concentration signal output detection electrical contact.
  • setting the oxygen concentration signal output detection electrical contact includes a first oxygen concentration signal output detection electrical contact V1 + and a second oxygen concentration signal output detection electrical contact V1-.
  • a first oxygen concentration signal output detection electrical contact V1 + can be set to correspond to the first oxygen concentration signal input detection electrical contact V2 + on the ventilation device 5.
  • the second oxygen concentration signal output detection electrical contact V1- is correspondingly electrically connected to the second oxygen concentration signal input detection electrical contact V2- on the ventilation device 5, and the ventilation device 5 detects the electrical contact according to the first oxygen concentration signal input
  • the oxygen concentration detection signal at the point V2 + and the second oxygen concentration signal input detection electrical contact V2- detects the oxygen concentration entering the oxygen sensor 2.
  • the oxygen sensor may be a chemical oxygen sensor.
  • the chemical oxygen battery is a sealed container containing two electrodes, the cathode is a piece of PTFE (polytetrafluoroethylene) coated with an active catalyst, and the anode is a lead block.
  • the sealed container only has a capillary pore on the top, allowing oxygen to pass into the working electrode.
  • the two electrodes are connected to two pins protruding from the surface of the oxygen sensor 2 through a current collector, that is, the first oxygen concentration signal output detection contact V1 + and the second oxygen concentration signal output detection contact V1- of the oxygen sensor 2.
  • the chemical oxygen battery is filled with an electrolyte solution, so that different ions can be exchanged between the electrodes.
  • the flow rate of oxygen entering the oxygen sensor 2 depends on the size of the capillary pores on the top of the oxygen sensor 2. When oxygen reaches the working electrode, it is on the electrode. Reactions occur separately, and the magnitude of the current generated by the reaction depends on the oxygen concentration.
  • a chemical oxygen battery can be connected in series between the first oxygen concentration signal output detection contact V1 + and the second oxygen concentration signal output detection contact V1-. Knowing the resistance, the ventilation device 5 can detect the oxygen concentration entering the chemical oxygen sensor by acquiring the electromotive force between the first oxygen concentration signal input detection contact V2 + and the second oxygen concentration signal input detection contact V2-.
  • the oxygen sensor 2 may also be a paramagnetic oxygen sensor. Between two magnetic poles of the air chamber of the paramagnetic oxygen sensor, two glass balls filled with nitrogen are fixed on a rotatable support. The oxygen in the test gas will be sucked into the magnetic field, which will produce a force on the sphere and a torque on the ball axis. The magnitude of this torque is linearly related to the oxygen concentration.
  • the paramagnetic oxygen sensor is also provided with a light source and a photoelectric sensor. A mirror is provided in the middle of the bracket. The mirror in the middle of the bracket can reflect the light source to the photoelectric sensor to obtain the deflection of the bracket. The photoelectric sensor feedbacks the signal to the coil around the bracket to generate A feedback current.
  • the magnitude of the feedback current depends on the oxygen concentration.
  • the feedback current flows through the first oxygen concentration signal output detection contact V1 + and the second oxygen concentration signal output detection contact V1- on the surface of the paramagnetic oxygen sensor.
  • the paramagnetic oxygen sensor can connect a known resistor in series between the first oxygen concentration signal output detection contact V1 + and the second oxygen concentration signal output detection contact V1-, and the ventilation device 5 obtains the first oxygen concentration signal input by The electromotive force between the detection contact V2 + and the second oxygen concentration signal is input to the detection contact V2- to detect the oxygen concentration entering the paramagnetic oxygen sensor 2.
  • the ventilation device uses the first oxygen concentration signal input detection electrical contact V2 + and the second oxygen concentration signal input detection electrical contact V2- so that the electrical interface of the ventilation device 5 can be compatible with the process of detecting the oxygen concentration of different types of oxygen sensors 2, The problem that it is difficult for the ventilation device 5 to implement different types of oxygen sensors 2 to detect the oxygen concentration caused by replacing the circuit board in the ventilation device 5 is avoided.
  • the embodiment of the present invention further provides a ventilation device detachably connected to the oxygen sensor connection structure described in the above embodiment.
  • the ventilation device includes a casing 51 and is disposed on the casing 51.
  • the casing 51 of the ventilation device 5 is provided with a sensor transfer component 1 connected to the oxygen sensor 2. Coordinated installation structure.
  • the air path interface 211 of the oxygen sensor 2 can communicate with the suction branch 16 of the ventilation device 5.
  • the type of the oxygen sensor 2 connected to the ventilation device 5 is a paramagnetic oxygen sensor 21 or a chemical oxygen sensor 22, and the ventilation device 5 may be a ventilator or an anesthesia machine.
  • the ventilation device 5 may further include an air path sampling outlet 171 provided on the casing 51, and the air path sampling outlet 171 is connected to the inhalation branch 16 and connected to the oxygen sensor 2 or the oxygen sensor.
  • the structured gas path switching component 161 is used for detecting the oxygen concentration of the gas flowing in the suction branch 16 by the oxygen sensor.
  • the sensor transfer unit 1 is used to enable different types of oxygen sensors 2 to be connected through the sensor transfer unit 1.
  • the problem that the replacement of the oxygen sensor 2 due to incompatibility of the mounting interface of the ventilating device 5 takes up a large space is conducive to reducing the volume of the ventilating device 5, and improving the portability of the ventilating device 5,
  • the oxygen sensor 2 connected to the ventilation device 5 can be replaced and repaired without removing the casing 51 of the ventilation device 5.
  • the ventilation device may further include a second oxygen sensor type identification unit, and the ventilation device recognizes the type of the oxygen sensor connected to the ventilation device through the second oxygen sensor type identification unit.
  • FIG. 12 is a schematic structural diagram of another oxygen sensor type identification circuit according to an embodiment of the present invention.
  • a second oxygen sensor type identification unit may be provided including digital signal type electrical contacts, for example, a digital signal type electrical contact E1 is provided on the oxygen sensor 2 to ventilate The digital signal type input electrical contact F1 is provided on the device 5.
  • the digital signal type electrical contact E1 on the oxygen sensor 2 is respectively corresponding to the corresponding Digital signal type input electrical contact F1 is electrically connected. It is possible to set different sensor interaction formats in the digital signals corresponding to different types of oxygen sensors 2.
  • the ventilation device 5 can identify the different types of oxygen sensors 2 by analyzing whether the digital signal type is input to the digital signal type on the electrical contact F1 or whether the communication is successful.
  • the oxygen sensor may be set to communicate with the ventilation device wirelessly.
  • the wireless communication format between the oxygen sensor and the ventilation device is different.
  • the ventilation device is based on the wireless communication.
  • the format determines the type of the oxygen sensor installed to the ventilation device.
  • the ventilation device may further include a transceiver unit, and the ventilation device receives the oxygen concentration detection value of the oxygen sensor through the transceiver unit.
  • the electrical signal transfer unit and the transceiver unit are connections for transmitting oxygen concentration detection related data between the oxygen sensor and the ventilation device.
  • the oxygen sensor can transmit an oxygen concentration acquisition signal to the ventilation device through the electrical signal transfer unit. It is also possible to receive a transmission oxygen concentration detection control signal or a power supply signal for powering an oxygen sensor by the electrical signal switching unit.
  • the ventilation device can transmit the oxygen concentration detection control signal or the power supply signal for powering the oxygen sensor to the ventilation device through the transceiver unit, and can also receive the oxygen concentration acquisition signal from the oxygen sensor through the transceiver unit.
  • the electric signal switching unit and the transceiver unit can perform wired communication or wireless communication.
  • the transceiver unit can also be set to be directly connected to the oxygen sensor, or the transceiver unit can be set to be connected to the above-mentioned electrical signal conversion unit to realize the signal transmission between the oxygen sensor and the ventilation device, which is not limited in the embodiment of the present invention.
  • the oxygen sensor and the ventilation device can also be directly connected through a wired or wireless method, so as to realize the transmission of relevant data such as oxygen concentration detection values, control signals and the like between the oxygen sensor and the ventilation device.
  • An embodiment of the present invention further provides a ventilation system including at least one oxygen sensor, the oxygen sensor connection structure according to the above embodiment, and the ventilation device according to the above embodiment. At least one oxygen sensor is detachably connected through the oxygen sensor connection structure. Go to the housing of the ventilation device.
  • 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 foregoing embodiment, it has the beneficial effects described in the foregoing embodiment, and details are not described herein again.

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Abstract

一种氧传感器连接结构、通气设备（5）以及通气系统，氧传感器连接结构包括至少一个传感器转接部件（1），传感器转接部件（1）与通气设备（5）的氧传感器安装结构相配合，传感器转接部件（1）与氧传感器（2）可拆卸连接；至少一个氧传感器（2）通过传感器转接部件（1）连接到通气设备（5）的外壳后，氧传感器（2）的气路接口（211）连通通气设备（5）的吸气支路（16）。

Description

氧传感器连接结构、通气设备以及通气系统 技术领域
本公开涉及医疗设备技术领域，例如涉及一种氧传感器连接结构、通气设备以及通气系统。
背景技术
氧传感器是呼吸机的重要组成部分，呼吸机通过氧传感器监测输送给病人的混合气体中的氧浓度值。氧传感器例如可以是化学氧电池或顺磁氧传感器，化学氧电池使用广泛，成本低，但化学氧电池测量过程中需消耗内部铅级，使用寿命为一年至两年，需定时进行更换，若化学氧电池使用时间超出使用寿命而未按期进行更换，可能造成氧浓度值监测不准，严重影响呼吸机的使用安全性，给病人带来风险。顺磁氧传感器利用的是氧气纯粹的物理特性，测量过程基本没有什么损耗，使用寿命长，在呼吸机的生命周期内免更换，长期使用也不会导致精度不准，具有较高的使用安全性和可靠性。
不同种类的氧传感器的安装接口存在较大的差异，相关技术中呼吸机在使用时只能配置一种传感器，其安装接口无法兼容不同种类的氧传感器。另外，氧传感器一般设置于呼吸机内部，给氧传感器的更换和维修造成了不便。
发明内容
本公开提供了一种氧传感器连接结构、通气设备以及通气系统，在实现氧传感器对流经通气设备吸气支路中气体的氧浓度采集的同时，使得不同种类的氧传感器能够通过传感器转接部件连接至通气设备的外壳上，通气设备能兼容不同类型的氧传感器，且无需拆除通气设备的外壳即可实现对连接至通气设备的氧传感器的更换以及维修。
本公开提供一种氧传感器连接结构，用于将至少一个氧传感器连接到通气设备的外壳上，包括：
至少一个传感器转接部件，所述传感器转接部件与所述通气设备的氧传感器安装结构相配合，所述传感器转接部件与所述氧传感器可拆卸连接；
当至少一个所述氧传感器通过所述传感器转接部件连接到所述通气设备的外壳后，所述氧传感器的气路接口连通所述通气设备的吸气支路。
在一实施例中，所述氧传感器连接结构还包括：
第一传感器类型识别单元，所述氧传感器连接结构根据所述第一传感器类型识别单元识别所连接氧传感器的类型。
在一实施例中，所连接氧传感器的类型为顺磁氧传感器或化学氧传感器。
在一实施例中，所述氧传感器连接结构还包括：
气路转接部件，设置为连接所述氧传感器的气路接口和所述通气设备的吸气支路。
在一实施例中，所述氧传感器连接结构还包括：
电信号转接单元，所述氧传感器连接结构通过所述电信号转接单元将所述氧传感器的氧浓度检测值转发给所述通气设备。
本公开还提供了一种通气设备，可拆卸连接上述氧传感器连接结构，包括外壳、设置于所述外壳上的气源接口、封装于所述外壳内部的吸气支路、呼气支路和控制单元，所述通气设备的外壳上设置有与连接所述氧传感器的传感器转接部件相配合的氧传感器安装结构；
当至少一个氧传感器通过所述传感器转接部件连接到所述通气设备的外壳后，所述氧传感器的气路接口连通所述通气设备的吸气支路。
在一实施例中，所述通气设备还包括：
第二氧传感器类型识别单元，所述通气设备通过所述第二氧传感器类型识别单元识别连接到所述通气设备外壳的所述氧传感器的类型。
在一实施例中，连接到所述通气设备外壳的氧传感器的类型为顺磁氧传感器或化学氧传感器。
在一实施例中，所述通气设备还包括：
收发单元，所述通气设备通过所述收发单元接收所述氧传感器的氧浓度检测值。
在一实施例中，所述通气设备还包括：
气路采样出口，所述气路采样出口设置于所述外壳上，所述气路采样出口设置为连接所述吸气支路与所述氧传感器或所述氧传感器连接结构的气路转接部件。
在一实施例中，所述通气设备为呼吸机或麻醉机。
本公开还提供了一种通气系统，包括至少一个氧传感器、上述氧传感器连接结构以及上述通气设备，所述至少一个氧传感器通过所述氧传感器连接结构 可拆卸连接到所述通气设备的外壳上。
在一实施例中，所述氧传感器为顺磁氧传感器或化学氧传感器。
本公开提供了一种氧传感器连接结构、通气设备以及通气系统，通过设置氧传感器连接结构能够将至少一个氧传感器连接到通气设备的外壳，氧传感器包括至少一个传感器转接部件，传感器转接部件与通气设备的氧传感器安装结构相配合，传感器转接部件与氧传感器可拆卸连接，当至少一个氧传感器通过传感器转接部件连接到通气设备的外壳后，氧传感器的气路接口可连通通气设备的吸气支路，在实现氧传感器对流经通气设备吸气支路中气体的氧浓度采集的同时，利用传感器转接部件使得不同种类的氧传感器能够通过传感器转接部件连接至通气设备的外壳上，解决了通气设备不能兼容多种氧传感器的问题，无需拆除通气设备的外壳即可实现对连接至通气设备的氧传感器的更换以及维修。
附图说明
图1为本发明实施例提供的一种通气设备的结构示意图；
图2为本发明实施例提供的一种通气设备的内部简图；
图3为本发明实施例提供的一种传感器转接部件的结构示意图；
图4为本发明实施例提供的另一种传感器转接部件的结构示意图；
图5为本发明实施例提供的一种氧传感器类型识别电路结构示意图；
图6为本发明实施例提供的另一种氧传感器类型识别电路结构示意图；
图7为本发明实施例提供的另一种氧传感器连接结构的安装结构示意图；
图8为本发明实施例提供的另一种氧传感器连接结构的安装结构示意图；
图9为本发明实施例提供的另一种氧传感器类型识别电路结构示意图；
图10为本发明实施例提供的另一种氧传感器类型识别电路结构示意图；
图11为本发明实施例提供的另一种氧传感器类型识别电路结构示意图；以及
图12为本发明实施例提供的另一种氧传感器类型识别电路结构示意图。
具体实施方式
图1为本发明实施例提供的一种通气设备的结构示意图，图2为本发明实施例提供的一种通气设备的内部简图，图3为本发明实施例提供的一种传感器 转接部件的结构示意图，图4为本发明实施例提供的另一种传感器转接部件的结构示意图。结合图1至图4，氧传感器连接结构包括至少一个传感器转接部件1，传感器转接部件1与通气设备5的氧传感器安装结构相配合，传感器转接部件1与氧传感器2可拆卸连接，氧传感器连接结构能够将至少一个氧传感器2连接到通气设备5的外壳51上。
结合图1至图4，可以设置氧传感器连接结构包括一个传感器转接部件1，该传感器转接部件1与通气设备位置A处的氧传感器安装结构相配合，例如可以使用螺丝通过安装结构S1将传感器连接部件1固定在通气设备5的位置A处。
通气设备5包括外壳51、设置于外壳51上的气源接口18以及封装于所述外壳内部的吸气支路16、呼气支路19和控制单元17。气源接口18与吸气支路16相连通，吸气支路16和呼气支路19经病人管路接患者口鼻。患者吸气时，从气源接口18通入的气体经过吸气支路16传递到患者的口鼻；患者呼气时，呼出的气体经过呼气支路19排出。控制单元17能够分别控制吸气支路16和呼气支路19的开闭，确保通气设备5正常使用。
传感器转接部件1可拆卸安装化学氧传感器21或顺磁氧传感器22，两种氧传感器2与传感器转接部件1之间的安装结构不同，例如可以设置化学氧传感器21螺纹安装于传感器转接部件1上，即化学氧传感器21与传感器转接部件1之间通过安装结构S2和S3实现固定安装，顺磁氧传感器22可插拔安装于传感器转接部件1上，即顺磁氧传感器22与传感器转接部件1之间通过安装结构S4和S5实现固定安装。
图3为本发明实施例提供的化学氧传感器21螺纹安装于传感器转接部件1上的传感器转接部件的结构示意图，图4为本发明实施例提供的顺磁氧传感器22可插拔安装于传感器转接部件1上的传感器转接部件的结构示意图。在一实施例中，可以设置化学氧传感器21和顺磁氧传感器22以其它方式安装于传感器转接部件1上，可以根据需求对不同氧传感器2与传感器转接部件1之间的安装方式进行设置。同样的，本发明实施例对传感器转接部件1安装于通气设备5的安装方式不作限定。这样，利用传感器转接部件1使得不同种类的氧传感器2能够通过传感器转接部件1连接至通气设备5的外壳51上，解决了通气设备5不兼容多种氧传感器2的问题。
结合图1至图4，氧传感器2可通过传感器转接部件1连接到通气设备5的外壳51，即氧传感器2可通过传感器转接部件1连接到通气设备5的设置吸气 支路16的内部之外的空间区域，由于不同种类氧传感器2可通过传感器转接部件1连接到通气设备的外壳51，无需拆除通气设备5的外壳51即可实现对连接至通气设备5的氧传感器2的更换以及维修。
结合图1至图4，通气设备1还可以包括安装门20，设置安装门20的一侧铰接设置在外壳51的本体112上。当需要更换维修氧传感器2时，仅需要将安装门20打开即可，简单方便。当然，安装门20与外壳51的本体112之间还可以设置锁扣、螺钉等锁紧结构，以在安装门20合上后可以锁紧在本体112上。在本文中，通气设备的外壳51指需要由维修人员用工具拆开的壳体部分。在其他实施例中，还可以将安装门20替换成其他遮挡结构，用来与外壳51相配合，共同容纳氧传感器2。在其他实施例中，还可以是仅在本体112上设置有安装槽113，氧传感器2全部或部分容纳在安装槽113中。在其他实施例中，还可以是仅仅将氧传感器2设置在本体112的外表面上，且不额外设置安装门20，方便氧传感器2的安装；还可以直接将氧传感器2直接安装于外壳51外侧，不设置安装槽113和安装门20。
结合图1至图4，当至少一个氧传感器2通过传感器转接部件1连接到通气设备5后，氧传感器2的气路接口211可连通通气设备5的吸气支路16。在一实施例中，氧传感器连接结构还可以包括连接氧传感器2的气路接口211和通气设备5的吸气支路16的气路转接部件161。氧传感器2的气路接口211通过气路转接部件161连通通气设备5的吸气支路16，氧传感器2实现对吸气支路16中气体氧浓度的检测。
在一实施例中，氧传感器连接结构还可以包括识别所连接氧传感器类型的第一传感器类型识别单元。在一实施例中，通气设备所连接氧传感器的类型可以为顺磁氧传感器或化学氧传感器，即氧传感器连接结构可以设置第一传感器类型识别单元以判断连接至通气设备的氧传感器为顺磁氧传感器还是化学氧传感器。
在一实施例中，可以设置第一传感器类型识别单元为短接电触点组，短接电触点组包括短接在一起的两电触点。图5为本发明实施例提供的一种氧传感器类型识别电路结构示意图。结合图1至图5，传感器转接部件1连接至通气设备5的外壳51时，短接电触点组3可以连通通气设备5上对应该短接电触点组3设置的电绝缘的两检测电触点D1，通气设备5根据对应的两检测电触点D1是否连通判定安装至通气设备5的氧传感器2的类型。
结合图1至图5，氧传感器连接结构包括一个传感器转接部件1时，可以将短接电触点组3设置于氧传感器2上，例如可以设置化学氧传感器21与顺磁氧传感器22中的一个上设置有短接电触点组3，例如设置化学氧传感器21上设置有短接电触点组3，顺磁氧传感器22上未设置短接电触点组3，通气设备5上设置有一组检测电触点组4，检测电触点组4包括电绝缘的两个检测电触点D1。通过短接电触点组3中两个电触点B1之间不同的电压差来区分所连接氧传感器2的类型，例如当通气设备5检测到两个检测电触点D1间的电压差为低时，判断所连接的氧传感器2为化学氧传感器21，当通气设备5检测到两个检测电触点D1间的电压差为高时，判断所连接的氧传感器2为顺磁氧传感器22。当然，短接电触点组3和检测电触点组4也可以均包括一个电触点，设置短接电触点组3和检测电触点组4中的两电触点在连通与断开时，电触点上的电压不同，通气设备5通过检测电触点的电压也可以实现对氧传感器2类型的判断。
在一实施例中，更换连接至通气设备5外壳51的氧传感器2时，无需更换传感器转接部件1，仅需通过拆卸传感器转接部件1上的氧传感器2即可完成氧传感器2的更换。氧传感器2通过传感器转接部件1安装至通气设备5时，若通气设备5检测到两检测电触点D1短路，则通气设备5可以判定通过传感器转接部件1安装至通气设备5的氧传感器2为化学氧传感器21；若通气设备5检测到两检测电触点D1为断开状态，则通气设备5可以判定通过传感器转接部件1安装至通气设备的氧传感器2为顺磁氧传感器22。这样使得通气设备5的电气接口能够兼容对不同种类的氧传感器2类型的检测，避免了更换通气设备5中的电路板导致的通气设备对不同种类的氧传感器2进行类型检测难度大的问题。
图6为本发明实施例提供的另一种氧传感器类型识别电路结构示意图。结合图1至图4以及图6，氧传感器连接结构包括一个传感器转接部件1，也可以设置化学氧传感器21以及顺磁氧传感器22上均设置有短接电触点组3，且两种氧传感器2上设置短接电触点组3的位置不同，通气设备5上设置两组检测电触点组4，每组检测电触点组4包括电绝缘的两个检测电触点D1。可以设置化学氧传感器21通过传感器转接部件1安装至通气设备5外壳51时，化学氧传感器21上的短接电触点组31中的短接的两个电触点B1能够分别与通气设备5上的检测电触点组41中的两个检测电触点D1电连接。顺磁氧传感器22通过传感器转接部件1安装至通气设备5时，顺磁氧传感器22上的短接电触点组32 中的短接的两个电触点B1能够分别与通气设备5上的检测电触点组42中的两个检测电触点D1电连接。
氧传感器2通过传感器转接部件1连接至通气设备5外壳51时，若通气设备5检测到检测电触点组41中的两检测电触点D1短路，检测电触点组42中的两检测电触点D1为断开状态，通气设备5则判定通过传感器转接部件1连接至通气设备5外壳51的氧传感器2为化学氧传感器21；若通气设备5检测到检测电触点组42中的两检测电触点D1短路，检测电触点组41中的两检测电触点D1为断开状态，通气设备5则判定通过传感器转接部件1连接至通气设备5外壳51的氧传感器2为顺磁氧传感器22，通气设备5可以通过检测哪组检测电触点组4中的两检测电触点D1连通判定通过传感器转接部件1安装至通气设备5的氧传感器2的类型，同样使得通气设备5的电气接口能够兼容对不同种类的传感器2类型的检测，避免了更换通气设备5中的电路板导致的通气设备5对不同种类的氧传感器2进行类型检测难度大的问题。
图7为本发明实施例提供的另一种氧传感器连接结构的安装结构示意图，图8为本发明实施例提供的另一种氧传感器连接结构的安装结构示意图。结合图1、图2、图7和图8，氧传感器连接结构可以包括两个传感器转接部件1，两个传感器转接部件1上可分别拆卸连接化学氧传感器21以及顺磁氧传感器22，图7和图8所示的两个传感器转接部件1可通过相同的安装结构S1连接到通气设备5的外壳51，设置化学氧传感器21螺纹安装于传感器转接部件11上，即化学氧传感器21与传感器转接部件11之间通过安装结构S2和S3实现固定安装。顺磁氧传感器22可插拔安装于传感器转接部件12上，即顺磁氧传感器22与传感器转接部件12之间通过安装结构S4和S5实现固定安装。
需要更换通气设备5中的氧传感器2时，可同时更换传感器转接部件1和安装于该传感器转接部件1上的氧传感器2，同样在实现氧传感器2对通气设备5吸气支路16中气体的氧浓度采集的同时，利用传感器转接部件1使得不同种类的氧传感器2能够通过传感器转接部件1连接至通气设备5的外壳51上，解决了通气设备5不兼容多种氧传感器2的问题。不同种类氧传感器2可通过传感器转接部件1连接到通气设备5的外壳51，无需拆除通气设备5的外壳51即可实现对连接至通气设备5的氧传感器2的更换以及维修，且使得用户也可以自行更换氧传感器。
在一实施例中，可以设置氧传感器连接结构的第一传感器类型识别单元为 短接电触点组，短接电触点组包括短接在一起的两电触点。图9为本发明实施例提供的另一种氧传感器类型识别电路结构示意图。结合图1以及图7至图9，氧传感器2通过传感器转接部件1连接至通气设备5的外壳51时，短接电触点组3可以连通通气设备5上对应该短接电触点组3设置的电绝缘的两检测电触点D1，通气设备5根据对应的两检测电触点D1是否连通判定安装至通气设备5的氧传感器2的类型。
结合图1以及图7至图9，氧传感器连接结构包括两个传感器转接部件1时，氧传感器2与对应的传感器转接部件1构成转接组件10，可以设置化学氧传感器21与对应的传感器转接部件11组成的转接组件10上设置有短接电触点组3，顺磁氧传感器22与对应的传感器转接部件12组成的转接组件10上未设置有短接电触点组3，通气设备5则可以根据对应的两检测电触点D1是否连通判定所连接氧传感器2的类型，判定过程与图5所示结构的氧传感器类型识别电路实现氧传感器2类型检测的过程类似，这里不再赘述。
图10为本发明实施例提供的另一种氧传感器类型识别电路结构示意图。结合图1、图7、图8和图10，氧传感器连接结构包括两个传感器转接部件1时，也可以设置化学氧传感器21与对应的传感器转接部件1组成的转接组件10以及顺磁氧传感器22与对应的传感器转接部件1组成的转接组件10上均设置有短接电触点组3，两转接组件10上设置短接电触点组3的位置不同，设置通气设备5上设置有两组检测电触点组4。判定过程与图6所示结构的氧传感器类型识别电路实现氧传感器2类型检测的过程类似，这里不再赘述。
短接电触点组3设置于氧传感器2与对应的传感器转接部件1组成的转接组件10上，可以设置短接电触点组3设置于该转接组件10中的氧传感器2上，也可以设置短接电触点组3位于该转接组件10中的传感器转接部件1上。
图11为本发明实施例提供的另一种氧传感器类型识别电路结构示意图。结合图1和图11，可以设置通气设备5上的检测电触点组4包括电绝缘的第一检测电触点D11和第二检测电触点D12，通气设备5的检测信号输入端H1与对应的第一检测电触点D11电连接，且检测信号输入端H1通过阻抗元件R接入第一电源信号VCC，第二检测电触点D12接入第二电源信号，第二电源信号例如为地信号GND，第一电源信号VCC与第二电源信号GND的电平不同。设置有短接电触点组3的氧传感器或传感器转接部件1连接至通气设备5时，短接电触点组3中短接的两电触点B1将检测电触点组4中的两检测电触点D1连通， 检测信号输入端H1接收到低电平。未设置短接电触点组3的氧传感器连接结构安装至通气设备时，检测电触点组4中的两检测电触点D1处于断开状态，检测信号输入端H1接收到高电平，通气设备5根据检测信号输入端H1接收信号电平的高低即可实现对不同种类氧传感器2类型的检测。
在一实施例中，通气设备中可集成有具有滤波和电平转换功能的信号处理电路。在一实施例中，如图11所示，氧传感器2可以为顺磁氧传感器，则第一电源信号VCC和第二电源信号GND还可以电连接至顺磁氧传感器，为顺磁氧传感器中的光源等模块供电。当然，还可以通过设于氧传感器或传感器转接部件上的芯片等实现氧传感器类型的识别。
在一实施例中，氧传感器连接结构还可以包括电信号转接单元，氧传感器连接结构设置为通过电信号转接单元将氧传感器的氧浓度检测值转发给通气设备。在一实施例中，电信号转接单元即为氧传感器与通气设备之间传输氧浓度检测相关数据的连接，例如氧传感器可以通过电信号转接单元向通气设备传输氧浓度采集信号，也可以通过电信号转接单元接收通气设备发出的传输氧浓度检测控制信号或为氧传感器供电的电源信号等等。
在一实施例中，可以设置电信号转接单元为氧浓度信号输出检测电触点。结合图1至图11，设置氧浓度信号输出检测电触点包括第一氧浓度信号输出检测电触点V1+和第二氧浓度信号输出检测电触点V1-。氧传感器2通过传感器转接部件1连接至通气设备5的外壳51时，可以设置第一氧浓度信号输出检测电触点V1+与通气设备5上的第一氧浓度信号输入检测电触点V2+对应电连接，第二氧浓度信号输出检测电触点V1-与通气设备5上的第二氧浓度信号输入检测电触点V2-对应电连接，通气设备5根据第一氧浓度信号输入检测电触点V2+和第二氧浓度信号输入检测电触点V2-上的氧浓度检测信号检测进入氧传感器2的氧气浓度。
在一实施例中，氧传感器可以为化学氧传感器，化学氧电池是一个密封容器，包含有两个电极，阴极是涂有活性催化剂的一片PTFE(聚四氟乙烯)，阳极是一个铅块，密封容器只在顶部有一个毛细微孔，允许氧气通过进入工作电极。两个电极通过集电器被连接到氧传感器2表面突出的两个引脚，即氧传感器2的第一氧浓度信号输出检测触点V1+和第二氧浓度信号输出检测触点V1-。化学氧电池内充满电解质溶液，使不同种离子得以在电极之间交换，进入氧传感器2的氧气的流速取决于氧传感器2顶部的毛细微孔的大小，当氧气到达工 作电极时，它电极上分别发生反应，反应生成电流的大小相应地取决于氧气浓度，化学氧电池内部可在第一氧浓度信号输出检测触点V1+和第二氧浓度信号输出检测触点V1-之间串接一已知电阻，通气设备5通过获取第一氧浓度信号输入检测触点V2+和第二氧浓度信号输入检测触点V2-之间的电动势即可检测出进入化学氧传感器的氧气浓度。
在一实施例中，氧传感器2还可以为顺磁氧传感器，顺磁氧传感器的气室的两个磁极之间，把两个充满氮气的玻璃球固定在一个可以转动的支架上。被测试气体中的氧气会被吸入到磁场中，产生对球体的作用力，对球轴会产生一个力矩，这个力矩的大小和氧气的浓度呈线性关系。顺磁氧传感器中还设置有光源和光电传感器，支架中间设置有镜子，支架中间的镜子可以把光源反射到光电传感器上以获取支架的偏转位移，光电传感器将信号反馈到支架周围的线圈，产生一个反馈电流，同样的，反馈电流的大小相应地取决于氧气浓度，反馈电流流经顺磁氧传感器表面的第一氧浓度信号输出检测触点V1+和第二氧浓度信号输出检测触点V1-，顺磁氧传感器内部可在第一氧浓度信号输出检测触点V1+和第二氧浓度信号输出检测触点V1-之间串接一已知电阻，通气设备5通过获取第一氧浓度信号输入检测触点V2+和第二氧浓度信号输入检测触点V2-之间的电动势即可检测出进入顺磁氧氧传感器2的氧气浓度。
通气设备利用第一氧浓度信号输入检测电触点V2+和第二氧浓度信号输入检测电触点V2-使得通气设备5的电气接口能够兼容对不同种类的氧传感器2进行氧浓度检测的过程，避免了更换通气设备5中的电路板导致的通气设备5实现不同种类的氧传感器2进行氧浓度检测难度大的问题。
本发明实施例还提供了一种可拆卸连接上述实施例所述的氧传感器连接结构的通气设备，结合图1至图4以及图7至图8，通气设备包括外壳51、设置于外壳51上的气源接口18，以及封装于外壳51内部的吸气支路16，呼气支路19和控制单元17，通气设备5的外壳51上设置有与连接氧传感器2的传感器转接部件1相配合的安装结构。当至少一个氧传感器2通过传感器转接部件1连接到通气设备5的外壳51后，氧传感器2的气路接口211可连通通气设备5的吸气支路16。在一实施例中，连接到通气设备5的氧传感器2的类型为顺磁氧传感器21或化学氧传感器22，通气设备5可以为呼吸机或麻醉机。
在一实施例中，结合图1和图2，通气设备5还可以包括设置于外壳51上的气路采样出口171，气路采样出口171连接吸气支路16与氧传感器2或氧传 感器连接结构的气路转接部件161，以实现氧传感器对流经吸气支路16中气体氧浓度的检测。
在一实施例中，在氧传感器2实现对流经通气设备5吸气支路16中气体氧浓度采集的同时，利用传感器转接部件1使得不同种类的氧传感器2能够通过传感器转接部件1连接至通气设备5的外壳51上，解决了通气设备5安装接口不兼容导致的氧传感器2更换需占用较大空间问题，有利于减小通气设备5的体积，提高通气设备5的便携性，且无需拆除通气设备5的外壳51即可实现对连接至通气设备5的氧传感器2的更换以及维修。
在一实施例中，通气设备还可以包括第二氧传感器类型识别单元，通气设备通过第二氧传感器类型识别单元识别连接到通气设备的氧传感器的类型。图12为本发明实施例提供的另一种氧传感器类型识别电路结构示意图。结合图1至图4、图7、图8和图12，可以设置第二氧传感器类型识别单元包括数字信号类型电触点，例如设置氧传感器2上有数字信号类型输出电触点E1，通气设备5上设置有数字信号类型输入电触点F1，氧传感器2通过传感器转接部件1连接至通气设备5的外壳51时，氧传感器2上的数字信号类型输出电触点E1分别于对应的数字信号类型输入电触点F1电连接。可以设置不同种类氧传感器2对应的数字信号中传感器的交互格式不同，通气设备5可以通过解析数字信号类型输入电触点F1上数字信号类型或者通讯是否成功实现不同种类氧传感器2类型的识别。
在一实施例中，也可以设置所述氧传感器可与所述通气设备进行无线通讯，不同所述氧传感器与所述通气设备之间的无线通讯格式不同，所述通气设备根据所述无线通讯格式判定安装至所述通气设备的所述氧传感器的类型。
在一实施例中，通气设备还可以包括收发单元，通气设备通过收发单元接收所述氧传感器的氧浓度检测值。参照上述实施例，电信号转接单元以及收发单元即为氧传感器与通气设备之间传输氧浓度检测相关数据的连接，例如氧传感器可以通过电信号转接单元向通气设备传输氧浓度采集信号，也可以通过电信号转接单元接收通气设备发出的传输氧浓度检测控制信号或为氧传感器供电的电源信号。通气设备则可以通过收发单元向通气设备传输氧浓度检测控制信号或为氧传感器供电的电源信号，也可以通过收发单元接收氧传感器发出的氧浓度采集信号。
电信号转接单元与收发单元之间可以进行有线通信，也可以进行无线通信。 另外，也可以设置收发单元直接与氧传感器连接，也可以设置收发单元与上述电信号转接单元连接，以实现氧传感器与通气设备之间信号的传输，本发明实施例对比不作限定。当然，氧传感器与通气设备之间还可以通过有线或无线方式直接连接，以实现氧传感器与通气设备之间氧浓度检测值、控制信号等相关数据的传输。
本发明实施例还提供了一种通气系统，包括至少一个氧传感器、上述实施例所述的氧传感器连接结构以及上述实施例所述的通气设备，至少一个氧传感器通过氧传感器连接结构可拆卸连接到通气设备的外壳上。在一实施例中，氧传感器为顺磁氧传感器或化学氧传感器。由于本发明实施例包括上述实施例所述的氧传感器连接结构以及通气设备，因此具备上述实施例所述的有益效果，这里不再赘述。

Claims (13)

  1. 一种氧传感器连接结构，用于将至少一个氧传感器连接到通气设备的外壳上，包括：
    至少一个传感器转接部件，所述传感器转接部件与所述通气设备的氧传感器安装结构相配合，所述传感器转接部件与所述氧传感器可拆卸连接；
    当至少一个所述氧传感器通过所述传感器转接部件连接到所述通气设备的外壳后，所述氧传感器的气路接口连通所述通气设备的吸气支路。
  2. 根据权利要求1所述的氧传感器连接结构，还包括：
    第一传感器类型识别单元，所述氧传感器连接结构根据所述第一传感器类型识别单元识别所连接氧传感器的类型。
  3. 根据权利要求2所述的氧传感器连接结构，其中，所连接氧传感器的类型为顺磁氧传感器或化学氧传感器。
  4. 根据权利要求1所述的氧传感器连接结构，还包括：
    气路转接部件，设置为连接所述氧传感器的气路接口和所述通气设备的吸气支路。
  5. 根据权利要求1所述的氧传感器连接结构，还包括：
    电信号转接单元，所述氧传感器连接结构通过所述电信号转接单元将所述氧传感器的氧浓度检测值转发给所述通气设备。
  6. 一种通气设备，可拆卸连接权利要求1-5任一项所述氧传感器连接结构，包括外壳、设置于所述外壳上的气源接口、封装于所述外壳内部的吸气支路、呼气支路和控制单元，其中，所述通气设备的外壳上设置有与连接所述氧传感器的传感器转接部件相配合的氧传感器安装结构；
    当至少一个氧传感器通过所述传感器转接部件连接到所述通气设备的外壳后，所述氧传感器的气路接口连通所述通气设备的吸气支路。
  7. 根据权利要求6所述的通气设备，还包括：
    第二氧传感器类型识别单元，所述通气设备通过所述第二氧传感器类型识别单元识别连接到所述通气设备外壳的所述氧传感器的类型。
  8. 根据权利要求7所述的通气设备，其中，连接到所述通气设备外壳的氧传感器的类型为顺磁氧传感器或化学氧传感器。
  9. 根据权利要求6所述的通气设备，还包括：
    收发单元，所述通气设备通过所述收发单元接收所述氧传感器的氧浓度检测值。
  10. 根据权利要求6所述的通气设备，还包括：
    气路采样出口，所述气路采样出口设置于所述外壳上，所述气路采样出口设置为连接所述吸气支路与所述氧传感器或所述氧传感器连接结构的气路转接部件。
  11. 根据权利要求6所述的通气设备，其中，所述通气设备为呼吸机或麻醉机。
  12. 一种通气系统，包括至少一个氧传感器、权利要求1-5任一项所述的氧传感器连接结构，以及权利要求6-11任一项所述的通气设备，所述至少一个氧传感器通过所述氧传感器连接结构可拆卸连接到所述通气设备的外壳上。
  13. 根据权利要求12所述的通气系统，其中，所述氧传感器为顺磁氧传感器或化学氧传感器。
PCT/CN2018/101163 2018-08-17 2018-08-17 氧传感器连接结构、通气设备以及通气系统 WO2020034217A1 (zh)

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