CN115607783A

CN115607783A - Breathing machine

Info

Publication number: CN115607783A
Application number: CN202110421223.5A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Shenzhen Minghua Electromechanical Co ltd
Current assignee: Shenzhen Minghua Electromechanical Co ltd
Priority date: 2021-04-20
Filing date: 2021-04-20
Publication date: 2023-01-17

Abstract

The present application provides a ventilator. The breathing machine comprises: the air inlet is connected with the first gas pipeline; the high-pressure oxygen inlet is connected with the second gas pipeline; the high-pressure oxygen regulating device is connected in the second gas pipeline at the downstream of the high-pressure oxygen inlet and at the upstream of the mixing chamber; a blower connected in the third gas line downstream of the mixing chamber and upstream of the patient interface; at least one flow sensor connected in the first gas line, the second gas line and/or the third gas line; and at least one pressure sensor connected to the first gas line, the second gas line, and/or the third gas line.

Description

Breathing machine

Technical Field

The present application relates to the field of medical equipment, and in particular, to ventilators.

Background

In modern clinical medicine, a ventilator has been widely used in respiratory failure due to various reasons, anesthesia and breathing management during major surgery, respiratory support therapy and emergency resuscitation as an effective means for manually replacing the function of spontaneous ventilation, and has a very important position in the modern medical field. The breathing machine is a vital medical device which can prevent and treat respiratory failure, reduce complications and save and prolong the life of a patient.

Most of common ventilators in the market are invasive ventilators.

On one hand, invasive ventilator therapy is adopted, artificial airways such as oral or transnasal tracheal intubation and tracheotomy tube need to be established, the patient is ventilated through the artificial airways, and the invasive ventilator therapy is adopted.

On the other hand, since the air tightness is strictly required for invasive ventilator treatment, the structure and control of the ventilator are more complicated, which inevitably increases the cost of the ventilator and the treatment cost of the patient.

Disclosure of Invention

In order to solve the technical problem, the application provides a breathing machine.

The breathing machine comprises: the air inlet is connected with the first gas pipeline; the high-pressure oxygen inlet is connected with the second gas pipeline; the high-pressure oxygen regulating device is connected in the second gas pipeline at the downstream of the high-pressure oxygen inlet and at the upstream of the mixing chamber; a blower connected in the third gas line downstream of the mixing chamber and upstream of the patient interface; at least one flow sensor connected in the first gas line, the second gas line and/or the third gas line; and at least one pressure sensor connected to the first gas line, the second gas line and/or the third gas line.

In some embodiments, the at least one flow sensor comprises a first flow sensor and a second flow sensor, wherein: the first flow sensor is connected in a second gas line downstream of the hyperbaric oxygen modulation device and upstream of the mixing chamber; and the second flow sensor is connected in a third gas line downstream of the mixing chamber and upstream of the patient interface.

In some embodiments, the hyperbaric oxygen regulation device comprises: the pressure regulating device comprises a pressure regulating valve and a first supporting drainage piece, wherein the first supporting drainage piece comprises a first chamber, a first flow passage and a second flow passage, the first flow passage and the second flow passage are communicated with the first chamber, the first end of the pressure regulating valve is installed in the first chamber, the end face of the first end is spaced from the bottom of the first chamber by a preset distance, so that a drainage cavity is formed between the first end and the side wall of the first chamber, the air inlet of the pressure regulating valve is communicated with the drainage cavity, the first flow passage is communicated with the drainage cavity, the first supporting drainage piece conducts air to the air inlet of the pressure regulating valve through the first flow passage and the drainage cavity, the second flow passage corresponds to and is communicated with the air outlet of the pressure regulating valve, and the first supporting drainage piece conducts the air flowing out of the air outlet of the pressure regulating valve to an air passage at the downstream of the pressure regulating assembly through the second flow passage; and/or flow control device, support the drainage piece including flow control valve and second, wherein, the second supports the drainage piece and includes that first connection chamber and second connect the chamber, the entry of first connection chamber is the high-pressure gas entry, the lateral wall that the chamber was connected to the second is provided with the low-pressure gas entry, flow control valve installs on the second supports the drainage piece, flow control valve's air inlet with the export intercommunication in first connection chamber, flow control valve's gas outlet with the entry intercommunication in chamber is connected to the second.

In some embodiments, the ventilator includes a silencing and mixing device, the silencing and mixing device includes a first channel, a second channel, and a mixing chamber, the first channel and the second channel are communicated with the mixing chamber, the first channel forms at least a portion of the first gas pipeline, the second channel forms at least a portion of the second gas pipeline, the mixing chamber forms the mixing chamber, the mixing chamber includes a mixing chamber outlet, the mixing chamber outlet is communicated with an air inlet of the blower, wherein the silencing and mixing device includes a silencing box and a plurality of silencing pieces, the plurality of silencing pieces are disposed in the silencing box, so that the silencing and mixing device forms the first channel and the mixing chamber, and the plurality of silencing pieces are made of silencing materials and configured to eliminate noise of gas entering the blower via the silencing and mixing device.

In some embodiments, the ventilator further comprises a filtering device, the filtering device is connected in the first gas pipeline at the downstream of the air inlet and at the upstream of the silencing box, wherein the filtering device comprises an installation shell, a primary filter cotton, a high-efficiency filter cotton and a sealing gasket, the installation shell comprises an installation shell inlet, an installation shell outlet and a mounting cavity communicated with the installation shell inlet and the installation shell outlet, the primary filter cotton and the high-efficiency filter cotton are arranged in the installation shell and configured to filter air passing through the filtering device, the sealing gasket is arranged at one end of the installation shell outlet, a buckle is designed on the installation shell, the silencing box further comprises a filtering device accommodating cavity configured to accommodate the filtering device, a wall plate of the filtering device accommodating cavity is provided with a clamping groove, and the clamping groove is configured to allow the buckle of the installation shell to be clamped, so that the filtering device is fixed in the filtering device accommodating cavity.

In some embodiments, the ventilator further includes a damping assembly, the damping assembly includes a damping box and a damping member, the damping box has a cavity structure, the blower is at least partially inside the damping box, and the damping member is filled in a space between the blower and an inner wall of the damping box to reduce vibration of the blower during operation, wherein the damping box includes a first opening and a second opening, the first opening corresponds to an air inlet of the blower and is communicated with the air inlet of the blower so as to guide the mixed gas from the first opening to the air inlet of the blower, and the second opening corresponds to an air outlet of the blower and is configured to allow an air outlet connecting pipe connected to the air outlet of the blower to pass through so as to guide the mixed gas flowing out from the air outlet to an air path downstream of the blower.

In some embodiments, the shock assembly further comprises: one end of the air inlet connecting pipe is connected with the air inlet connecting part of the damping box, and the other end of the air inlet connecting pipe is connected with the air inlet of the fan, so that the air inlet connecting part of the damping box is communicated with the air inlet of the fan, wherein the air inlet connecting part of the damping box is of a hollow pipe structure, and the first opening is an inlet of the hollow pipe structure; and one end of the air outlet adapter tube is connected with an air outlet of the fan, a first interface is arranged on the part of the air outlet adapter tube, which is positioned outside the shock absorption box, the at least one pressure sensor comprises a first pressure sensor connected to a third gas pipeline on the downstream of the fan and the upstream of the patient interface, and the first pressure sensor is connected with the first interface and is connected to the third gas pipeline through the first interface.

In some embodiments, the ventilator further comprises: an oxygen concentration sensor connected to a third gas line downstream of the blower and upstream of the patient interface, configured to measure an oxygen concentration of a gas in the third gas line, wherein the oxygen concentration sensor is disposed at an end of the third gas line proximate to the patient interface, wherein the ventilator further comprises an outlet connector having a gas flow channel, an outlet of the gas flow channel being the patient interface, a sidewall of the gas flow channel being provided with a second interface, the oxygen concentration sensor being connected to the second interface and through the second interface to the third gas line.

In some embodiments, the ventilator further comprises: a temperature sensor connected to the third gas line downstream of the blower and upstream of the patient interface; and/or a leak connected to a third gas line downstream of the blower and upstream of the patient interface.

In some embodiments, the ventilator further comprises: the zero calibration valve is connected with more than one target pressure sensor and is configured to perform timing zero calibration on the target pressure sensor so as to avoid zero drift of the target pressure sensorLeading to excessive measurement data errors; a blood oxygen test connector configured to allow access of a blood oxygen test device to monitor blood oxygen content of a patient; CO2 ₂ A test joint configured to allow CO ₂ The test device is switched on to thereby detect CO in the gas exhaled by the patient ₂ Monitoring the content; and/or a purge module operative to impart a purge flow to the sensor sampling tube to prevent the contamination source from clogging the sensor sampling tube or contaminating the sensor through the sensor sampling tube.

In summary, the present application provides a ventilator. The application provides a breathing machine is noninvasive ventilator, and noninvasive treatment uses the face guard can accomplish the mechanical ventilation function, can not cause traumatic injury to the patient, and convenient to use changes the off-line. The noninvasive ventilator adopts the turbine as an air source, so that an air compressor is omitted, and air sources are not required to be equipped in hospitals. The noninvasive ventilator is provided with a turbine box assembly, and a filter is arranged at an air inlet of the turbine box assembly, so that dust and germs in air can be effectively filtered. The labyrinth silencing chamber is designed at the rear end of the filter, so that the turbine noise can be effectively reduced, and the treatment environment of a patient is improved. The turbine box assembly is made of damping materials to wrap and support the turbine, and a good damping effect is achieved. The noninvasive ventilator comprises a high-pressure oxygen component and a low-pressure oxygen source interface. When the pressure of the oxygen source in the hospital is not enough or the high-pressure oxygen source is not available, the low-pressure oxygen can be introduced into the low-pressure oxygen source interface to continue treating the patient. The noninvasive ventilator contains a purging component, and can effectively prevent water drops in the patient end pressure sampling tube from being condensed to influence the measurement precision. The noninvasive ventilator is also provided with a blood oxygen module and a CO2 module, and can assist a doctor to monitor the blood oxygen content or the CO2 content of a patient when necessary so as to make a better diagnosis. An oxygen battery is designed at the air suction port of the noninvasive ventilator so as to assist in monitoring the oxygen concentration of inhaled gas of a patient.

Drawings

Fig. 1 is a schematic diagram illustrating an air circuit structure of a ventilator according to an embodiment of the present application;

FIG. 2 is a schematic diagram illustrating a gas circuit structure of a ventilator including a purge module according to an embodiment of the present application;

FIG. 3A is a schematic diagram illustrating the connection of a filter assembly, a silencing and mixing device, a shock absorbing assembly and a fan according to an embodiment of the present application;

FIG. 3B illustrates a partial cross-sectional view of a sound attenuating mixing device and shock absorbing assembly according to an embodiment of the present application;

FIG. 3C illustrates a partial cross-sectional view of a damper assembly and a fan provided in accordance with an embodiment of the present application;

FIG. 3D illustrates an isometric view of a sound damping cassette provided in accordance with an embodiment of the present application;

FIG. 3E illustrates an isometric view of another orientation of a sound damping cassette provided in accordance with an embodiment of the present application;

FIG. 3F illustrates a schematic structural diagram of a filter assembly provided in accordance with an embodiment of the present application;

FIG. 4A shows a schematic structural diagram of a high pressure gas regulating device provided in accordance with the present application;

FIG. 4B illustrates a schematic structural diagram of a pressure adjustment assembly provided in accordance with an embodiment of the present application;

FIG. 4C illustrates a partial cross-sectional view of a pressure adjustment assembly provided in accordance with an embodiment of the present application;

FIG. 4D illustrates a partial cross-sectional view of a first support drain provided in accordance with an embodiment of the present application;

FIG. 4E illustrates a partial cross-sectional view of a pressure adjustment assembly provided in accordance with an embodiment of the present application;

FIG. 4F is a schematic diagram illustrating a flow regulating assembly according to an embodiment of the present application;

FIG. 4G illustrates a partial cross-sectional view of a second support drain provided in accordance with embodiments of the present application;

fig. 5 shows a hardware structure diagram of a ventilator provided in an embodiment of the present application.

Detailed Description

The following description is presented to enable any person skilled in the art to make and use the present disclosure, and is provided in the context of a particular application and its requirements. These and other features of the present disclosure, as well as the operation and function of the related elements of the structure, and the combination of parts and economies of manufacture, may be particularly improved upon in view of the following description. All of which form a part of this disclosure, with reference to the accompanying drawings. It is to be expressly understood, however, that the drawings are for the purpose of illustration and description only and are not intended as a definition of the limits of the disclosure. Various local modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is not to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the claims.

The present application provides a ventilator. As an example, fig. 1 shows a schematic diagram of an air circuit structure of a ventilator 001 provided in an embodiment of the present application. In particular, ventilator 001 may include a primary airway module 002.

The main gas circuit module 002 may include an air gas circuit L1, an oxygen gas circuit L2, and a mixing gas circuit L3.

The air path L1 includes an air flow passage communicating an air inlet and the mixing chamber 803, and configured to guide air from the air inlet to the mixing chamber 803. The air inlet is upstream of the mixing chamber.

The oxygen gas path L2 includes an oxygen gas flow path communicating an oxygen gas inlet and the mixing chamber 803, the oxygen gas flow path being configured to guide oxygen gas from the oxygen gas inlet to the mixing chamber 803, and the air and the oxygen gas are mixed into a mixed gas in the mixing chamber 803. By way of example, the oxygen inlet may be a high pressure oxygen inlet that may be in communication with an outlet of the high pressure oxygen source 814.

The mixed gas path L3 includes a mixed gas flow path communicating the mixing chamber 803 and the suction gas path outlet, and the mixed gas flow path is configured to guide the mixed gas from the mixing chamber 803 to a total outlet of the mixed gas. The total outlet of the mixed gas refers to the total outlet of the ventilator 001 for delivering gas to the patient, which may be in communication with the respiratory organ of the patient. In some embodiments, the total outlet may be an outlet of an inhalation valve. In some embodiments, the total outlet may be an outlet of a respiratory mask.

The air circuit L1 may include a filtering unit 801 and/or a silencing unit 802. In the suction direction, the filter unit 801 may be disposed upstream of the muffler unit 802. The inspiratory direction refers to the direction of gas flow toward the patient. It is noted that the filtering unit 801 and/or the silencing unit 802 may be disposed at other positions in the air path without departing from the core spirit of the present application.

The oxygen gas circuit L2 may include an oxygen source 814, a high pressure gas regulator 815, and/or an oxygen flow sensor 816. The oxygen source 814, the high pressure gas regulator 815 and the oxygen flow sensor 816 are provided in this order in the inhalation direction. A high pressure gas regulator 815 and an oxygen flow sensor 816 are disposed downstream of the high pressure oxygen inlet and upstream of the mixing chamber 803. Specifically, the high pressure oxygen source 814 is upstream of the high pressure oxygen inlet, the high pressure gas conditioning device 815 is downstream of the high pressure oxygen inlet and upstream of the oxygen flow sensor 816, and the oxygen flow sensor 816 is downstream of the high pressure gas conditioning device 815 and upstream of the mixing chamber 803. It is noted that the high pressure gas regulator 815 and/or the oxygen flow sensor 816 may be located elsewhere in the gas circuit without departing from the core spirit of the present application.

The mixed gas path L3 may include a fan 804, a total pressure sensor 805, a total flow sensor 806, a temperature sensor 807, a leak 808, and/or an oxygen concentration testing device 810. In the suction direction, the total pressure sensor 805 and the total flow sensor 806 may be disposed downstream of the fan 804, the total pressure sensor 805 is configured to measure a pressure of the mixed gas output by the fan 804, and the total flow sensor 806 is configured to measure a flow rate of the mixed gas output by the fan 804. In some embodiments, a total pressure sensor may be disposed downstream of the fan and upstream of the total flow sensor.

The oxygen concentration sensor 810 is configured to measure the oxygen concentration in the mixed gas path L3. An oxygen concentration test device 810 is disposed downstream of the mixing chamber and upstream of the main outlet. In some embodiments, the oxygen concentration testing device is disposed downstream of the blower and upstream of the main outlet. In some embodiments, the oxygen concentration sensor is disposed downstream of the total flow sensor and upstream of the total outlet. In some embodiments, the oxygen concentration sensor 810 is disposed downstream of the fan 804 and near one end of the general outlet in the direction of air draw. In some embodiments, the mixed gas path L3 includes a main outlet connector, the main outlet connector has a gas flow channel, an outlet of the gas flow channel is the main outlet, a side wall of the gas flow channel is provided with a second interface, and the oxygen concentration sensor is connected to the second interface. As an example, the main outlet connection may be used as an inhalation valve of a ventilator.

Temperature sensor 807 is configured to measure the temperature of the gas in the mixed gas path. The temperature sensor may be disposed downstream of the mixing chamber and upstream of the main outlet. In some embodiments, the temperature sensor may be disposed downstream of the blower and upstream of the main outlet. In some embodiments, a temperature sensor may be disposed downstream of the total pressure sensor and upstream of the total outlet. In some embodiments, the temperature sensor may be disposed downstream of the blower and upstream of the oxygen concentration testing device. As an example, the mixing air path L3 further includes at least one hose communicating the outlet of the total flow sensor and the inlet of the total outlet connector, and a sidewall of the at least one hose is provided with at least one interface configured to allow the temperature sensor to be accessed. The temperature sensor may measure a temperature of a gas within the mixed gas through the at least one interface.

The gas exhaled by the user may be vented to atmosphere through the leak 808. The leak may be disposed downstream of the fan and upstream of the main outlet. As an example, the leak may be provided downstream of the blower and upstream of the oxygen concentration testing device. As an example, the leak test may be disposed downstream of the total flow sensor and upstream of the oxygen concentration testing device. The number of leakers may be one or more. As an example, the mixing air path L3 further includes at least one hose communicating the outlet of the total flow sensor and the inlet of the total outlet connector, and a side wall of the at least one hose is provided with at least one interface configured to allow the leak member to be accessed. The leakage piece can be communicated with the flow channel in the mixed gas circuit through the at least one interface so as to discharge the gas in the mixed gas circuit to the atmosphere.

It is noted that fan 804, total pressure sensor 805, total flow sensor 806, temperature sensor 807, leak 808, and/or oxygen concentration testing device 810 may be placed at other locations in the air path without departing from the core spirit of the present application.

In some embodiments, a purge module is also included in ventilator 001. When the respirator 001 works, the purging module can give continuous purging airflow to the patient end flow sensor, so that inaccurate flow test caused by blocking of a pressure sampling pipe of the flow sensor by water vapor or pollutants in a breathing pipeline is prevented. By way of example, fig. 2 illustrates a schematic diagram of a pneumatic circuit structure of a ventilator 001 including a purge module provided in accordance with an embodiment of the present application. The purge module 005 may include a purge gas line L6. One end of the purge gas line L6 may be connected downstream of the blower, and the other end may be connected upstream of the main outlet. As an example, one end of the purge gas path may be connected downstream of the total flow sensor and the other end may be connected upstream of the total outlet. As an example, the purge module may include a purge assembly 818. As an example, the purge module may also include a purge switch module 819 for controlling the switching of the purge module. In some embodiments, at least one pressure sampling port may be disposed in the purge gas line L6, and a patient end pressure sensor 817 may be connected to the pressure sampling port to measure the patient end gas pressure.

It is noted that the purge module may be connected at other locations in the gas circuit without departing from the core spirit of the present application.

With continued reference to fig. 1, the ventilator 001 may also include a control module 004. The control module 004 is connected to the at least one pressure sensor and the at least one flow sensor, and configured to receive measurement signals from the at least one pressure sensor and the at least one flow sensor, and generate control instructions to control the operation of the ventilator 001 according to the measurement signals.

With continued reference to fig. 1, the control module 004 interfaces with various pressure and flow sensors in the ventilator 001. By way of example, the pressure sensors and flow sensors may include, but are not limited to, an oxygen flow sensor 816 disposed in oxygen circuit L2 for measuring oxygen flow, a total flow sensor 806 disposed in mixed gas circuit L3 for measuring flow of the mixed gas, a total pressure sensor 805 disposed in mixed gas circuit L3 for measuring pressure of the mixed gas, a patient end pressure sensor 817 disposed at a patient end for measuring patient end pressure, and a patient end flow sensor disposed at a patient end for measuring patient end flow.

The control module 004 may receive measurement signals from the pressure and flow sensors, generate various control commands based on the measurement signals, and control the operation of the high pressure gas regulator 815, the fan 804, the purge switch 819, and/or other modules via the control commands. After the high-pressure gas regulator 815, the fan 804, the purge switch 819 and/or other modules act, the flow, pressure and/or concentration at different parts in the gas path are fed back to the control module 004 through the sensors, so that closed-loop control is realized.

By way of example, fig. 3A illustrates a connection diagram of a filtering assembly 200, a silencing and mixing device 100, a shock absorbing assembly 300 and a fan 804 according to an embodiment of the present application. FIG. 4B illustrates a partial cross-sectional view of a muffling and mixing apparatus 100 and a shock assembly 300 provided in accordance with an embodiment of the present application. By way of example, fig. 3C illustrates a partial cross-sectional view of a shock assembly 300 and a fan 804 provided in accordance with an embodiment of the present application.

Referring to fig. 3C, the blower 804 may include an intake vent 410 and an exhaust vent 420. The end of the fan 804 to which the motor is connected is 430. The fan 804 is at least partially within the shock box 310.

The shock absorbing assembly 300 may include a shock absorbing case 310 and a shock absorbing member 320. Damping component 300 mainly adopts damping material to wrap up the turbofan and supports to play the damping effect, still play simultaneously with amortization mixing arrangement gas outlet sealing connection effect, so that introduce the turbofan smoothly with the air current of amortization mixing arrangement output.

The shock absorbing members 320 are filled in a space between the blower 804 and the inner wall of the shock absorbing case 310. In one aspect, the shock absorbing member 320 may provide support for the fan 804; on the other hand, the vibration absorbing member 320 can reduce vibration of the fan 804 during operation. In some embodiments, the shock absorbing member 320 may include shock absorbing cotton 321 having a shock absorbing function. The number of the shock-absorbing cottons 321 may be plural. The damping cotton 321 may wrap a portion of the fan 804 where vibration is generated. In some embodiments, the shock absorbing member 320 may further include a shock absorbing silicone pad 322. The shock absorbing silicone pad 322 may be disposed between the blower 804 and the end cap 530.

The shock-absorbing case 310 has a cavity structure. The cavity structure is configured to receive the damper 320 and the fan 804. The shock-absorbing case 310 may include a first opening 311 and a second opening 312. The first opening 311 corresponds to the air inlet 410 of the fan 804 and is communicated with the air inlet 410 of the fan 804, so that the target gas is guided to the air inlet 410 of the fan 804 through the first opening 311. The second opening 312 corresponds to the air outlet 420 of the fan 804, and the second opening 312 is configured to allow the target gas flowing out of the air outlet 420 to flow out of the fan assembly 001. As an example, the arrows in FIG. 3C show the flow direction l of the target gas ₀ 。

In some embodiments, the ventilator 001 further comprises an air outlet duct 510. The outlet duct 510 has a hollow tube structure and includes an outlet duct inlet end 511 and an outlet duct outlet end 512. The air inlet end 511 of the air outlet pipe is communicated with the air outlet 420. The air outlet pipe air outlet end 512 is located outside the shock absorption box 310, wherein a detection interface 513 is arranged on the part, located outside the shock absorption box 310, of the air outlet pipe 510. The first pressure sensor 805 for measuring the pressure at the outlet of the blower 804 can measure the pressure of the air at the outlet of the blower 804 through the detection interface 513.

In some embodiments, an air inlet connection portion 314 is disposed in the shock-absorbing box 310 at a position corresponding to the first opening 311, the air inlet connection portion 314 has a hollow tube structure, and the first opening 311 is an inlet of the hollow tube structure.

The shock absorbing assembly 300 may further include an air intake connection pipe 520. The air inlet connection pipe 520 includes a hollow pipe structure. Both ends of the air inlet connection pipe 520 are respectively connected to the air inlet connection portion 314 and the air inlet 410 of the fan, so as to communicate the fan connection portion 314 with the air inlet 410 of the fan.

In some embodiments, the shock box 310 further comprises a third opening 313. The shock absorbing assembly 300 may further include an end cap 530, the end cap 530 is disposed at one end of the shock absorbing box 310 close to the third opening 313, the end cap 530 is connected to the shock absorbing box 310 to close the third opening 313, wherein a fourth opening 531 (the fourth opening 531 is shown in fig. 3A) is disposed on the end cap 530 to allow one end 430 of the fan 804 connected with the motor to protrude.

In some embodiments, the first opening 311 is disposed on the first outer surface 319 of the shock box 310. The sound attenuating mixing device 100 located upstream of the shock absorbing assembly 300 may be attached to the first outer surface 319. Wherein the gas outlet of the silencing and mixing device 100 can communicate with the first opening 311.

In some embodiments, the shock assembly 300 may further include a seal ring 540. A sealing ring 540 may be disposed between the end cap 530 and the shock-absorbing box 310 to improve sealability. As an example, the damper box 310 may be provided with a packing installation groove. The packing 540 may be installed in the packing installation groove.

Referring to fig. 3B, the muffling and mixing apparatus 100 is configured to reduce the noise of the target gas. The noise-reduction mixing apparatus 100 may be provided at one side of the shock-absorbing member 300. For example, the sound attenuating assembly 300 may be disposed at one side of the first opening 311 of the shock absorbing assembly 300. The target gas may be as shown in FIG. 4BDirection l shown in ₀ And (4) flowing. Along the direction l of the target gas flow ₀ The noise reduction mixing apparatus 100 may be disposed upstream of the shock-absorbing member 300.

With continued reference to FIG. 3B, the acoustic mixing apparatus 100 may include a first passage 10, a second passage 20, and a mixing chamber 30. The first passage 10 and the second passage 20 communicate with the mixing chamber 30. The first passage may constitute a part of an air flow passage in the air gas path L1 shown in fig. 1, the second passage may constitute a part of an oxygen flow passage in the oxygen gas path L2 shown in fig. 1, and the mixing chamber may constitute the mixing chamber 803 shown in fig. 1.

The first channel 10 is configured to guide a first gas from a first gas channel inlet 11 to the mixing chamber 30. As an example, the first gas may be air. The second channel 20 is configured to direct a second gas from a second gas channel inlet 21 to the mixing chamber 30. As an example, the second gas may be oxygen. The first gas and the second gas are mixed in the mixing chamber 30 as the target gas. The mixing chamber 30 includes a mixing chamber outlet 31, and the mixing chamber outlet 31 communicates with the first opening 311 of the damper assembly 300 to guide the target gas to the damper assembly 300.

Specifically, the silencing and mixing device 100 may include a silencing box 110 and a silencing piece 120. The silencer 120 may be disposed inside the silencing box 110 to form the first passage 10. In some embodiments, the silencer 120 may be disposed within the silencing cartridge 110 to form the mixing chamber 30. The silencer 120 may be made of a silencing material (e.g., silencing cotton), and the silencer 120 is configured to eliminate noise of the first gas.

As an example, fig. 3D shows an isometric view of a sound damping box 110 provided according to an embodiment of the present application, and fig. 3E shows an isometric view of another orientation of a sound damping box 110 provided according to an embodiment of the present application.

Referring to fig. 3D and 3E, the sound-deadening box 110 includes a first wall plate 81, a second wall plate 82, a third wall plate 83, a fourth wall plate 84, and a fifth wall plate 85. Wherein the first wall plate 81, the second wall plate 82, the third wall plate 83, the fourth wall plate 84, and the fifth wall plate 85 enclose a main chamber of the sound-deadening box 110 and form a main chamber inlet 86. The first wall plate 81 is opposite the fourth wall plate 84, the second wall plate 82 is opposite the main chamber inlet 86, and the third wall plate 83 is opposite the fifth wall plate 85.

Be provided with separation structure 89 in the main cavity, separation structure 89 will the main cavity is separated into first subchamber Q ₁ And a second sub-chamber Q ₂ . The first gas inlet is arranged to form the first sub-chamber Q ₁ On the wall panel of (2). As an example, the first gas inlet 11 is a through hole structure on the fifth wall plate 85. A plurality of noise attenuating members may be disposed in the first sub-chamber Q ₁ The first channel 10 and the mixing chamber 30 are formed. For example, the plurality of sound attenuating elements may be disposed in sequence between the second wall 82 and the primary chamber inlet 86. The first sub-chamber Q ₁ And may be divided into a first portion and a second portion. At least one silencing element 120 is arranged in said first part forming said first passage 10 and at least one silencing element 120 is arranged in said second part forming said mixing chamber 30. The outer contour of the silencer closest to the main chamber inlet 86 matches the main chamber inlet 86 and substantially seals the main chamber inlet 86, wherein the silencer is provided with a through hole structure, which is the mixed gas outlet 31. For example, in the embodiment shown in FIG. 4B, 5 muffling elements X ₁ 、X ₂ 、X ₃ 、X ₄ And X ₅ Are sequentially arranged in the first sub-cavity Q along the flowing direction of the first gas ₁ Forms said first channel 10. Silencing part X ₆ And a silencing member X ₇ Are sequentially arranged in the first sub-cavity Q ₁ Forming the mixing chamber 30. Silencing part X ₆ With silencing parts X on both sides ₅ And a silencing member X ₇ Enclosing said mixing chamber 30. Silencing part X ₆ Is provided with an opening to communicate with the first passage 10. Silencing part X ₇ Is disposed at the end closest to the main chamber inlet 86. Silencing part X ₇ Outer contour ofIs sized to substantially match the main chamber inlet 86. Thus, the silencing element X ₇ Substantially blocking the main chamber inlet 86. The mixing cavity air outlet 31 is arranged on the silencing part X ₇ The above.

With continued reference to fig. 3D and 3E, the second subchamber Q is formed ₂ The wall of the chamber wall of (2) is provided with an outer conduit (92). One end of the outer pipe 92 is the second gas inlet 21, and the other end is the second sub-chamber Q ₂ And (4) communicating. As an example, the outer pipe 92 may be disposed on the first wall plate 81 and protrude from the first wall plate 81.

By way of example, the second gas inlet 21 is disposed at an end remote from the main chamber inlet 86. Thus, on the one hand, the distance between the second gas inlet 21 and the mixed gas outlet 31 is increased, increasing the length of the second channel 20; on the other hand, the installation position is reserved for other parts on the oxygen path, so that the structure of the respirator provided with the silencing box is more compact.

In some embodiments, the sound damping cartridge 110 may further include a receiving cavity 114. The accommodation chamber 114 may be disposed upstream of the first gas inlet 11 in the direction of the first gas flow. One end of the accommodating chamber 114 is communicated with the first gas inlet 11, and the other end is communicated with the atmosphere. The receiving chamber 114 may be a filter assembly receiving chamber. The receiving cavity 114 is configured to receive a filter assembly. The filter assembly may filter the first gas. The filter assembly is at least partially within the receiving cavity 114. The receiving cavity 114 can be defined by the fifth wall 85 and the wall 87 surrounding the outer contour edge of the fifth wall 85. The receiving cavity 114 is substantially rectangular. A catch 94 may be provided on wall 87. A snap fit may be provided on the filter assembly and may snap into the snap groove 94 to secure the filter assembly within the receiving cavity 114.

In some embodiments, sound damping cartridge 110 may further include mounting portion 95. The mounting portion 95 is disposed at one end of the main chamber inlet 86. For example, the mounting portion 95 may include at least one mounting ear disposed circumferentially about the main chamber inlet 86. The mounting portion 95 may be provided with mounting holes configured to allow fasteners to pass therethrough and mount the acoustic mixing apparatus 100 to the damper box. In some embodiments, the sound attenuating assembly and the shock absorbing assembly may be of a unitary design, however, the unitary design may increase the cost of manufacturing, assembly, maintenance, etc. Taking the maintenance cost as an example, if the shock absorption assembly breaks down, the silencing assembly integrally designed with the shock absorption assembly needs to be replaced, and the maintenance cost is increased. This application is connected amortization subassembly and damper through installation department, and amortization subassembly and damper are independent each other, can realize amortization subassembly and damper's modular design, have improved manufacturability, have reduced and have generated assembly cost of maintenance.

In some embodiments, the sound damping box 110 may further include a packing installation groove 118. The seal mounting slot 118 may be disposed at one end of the primary chamber inlet 86 and disposed around the primary chamber inlet 86. A sealing member 40 (e.g., a packing) may be installed in the sealing member installation groove 118 to improve sealability of the connection between the sound-damping box 110 and the shock-absorbing box.

In some embodiments, the sound-deadening cartridge 110 may further include a negative pressure detection port 51. As an example, the negative pressure detection port 51 is provided on the second wall plate 82. In some embodiments, the silencing and mixing device 100 may further include a negative pressure detecting device 50, and the negative pressure detecting device 50 may access the first channel 10 through the negative pressure detecting port 51 to measure the negative pressure in the first channel 10.

In some embodiments, the sound damping box 110 may also include mounting feet 88. As an example, mounting feet 88 may be provided on the third wall plate 83. The mounting feet 88 may attach the sound damping box to the support unit.

Referring to fig. 3B, the ventilator 001 may further comprise a seal 40. A seal 40 may be disposed between the acoustic mixing apparatus 100 and the shock box 310 to prevent leakage of gas as it flows from the acoustic mixing apparatus 100 to the shock assembly 300. By way of example, the sealing member 40 may be mounted in a mounting groove 118 on the sound damping box 110.

Referring to fig. 4A, a filter assembly 200 is disposed along the first gas passageway upstream of the first gas inlet 11 and is configured to filter the first gas. By way of example, the filter assembly may be used to filter dust and germs from a first gas (e.g., air). By way of example, fig. 3F illustrates a schematic structural diagram of a filter assembly 200 provided in accordance with an embodiment of the present application. Specifically, the filter assembly 200 may include a filter assembly mounting housing 210, a primary filter cartridge 220, a high efficiency filter cartridge 230, and a gasket 240.

The filter assembly mounting housing 210 includes a mounting housing inlet 211, a mounting housing outlet 212, and a mounting cavity 213 communicating the mounting housing inlet 211 and the mounting housing outlet 212.

The filter assembly mounting housing 210 is designed with a snap 214. When the filter assembly 200 is assembled with the sound damping box 110, the latch 214 is engaged with the latch groove 94 of the sound damping box 110. With this design, on the one hand, the filter element 200 is fixed in the filter element receiving cavity 114; on the other hand, the packing 240 is compressed between the sound-deadening cartridge 110 and the filter assembly mounting case 210, and improves the sealing performance between the sound-deadening cartridge 110 and the filter assembly mounting case 210.

The primary filter wool 220 and the high efficiency filter wool 230 are disposed within the filter assembly mounting housing 210 and are configured to filter the first gas.

The gasket 240 is disposed at one end of the mounting case outlet 212 and configured to enhance sealability at a connection portion of the filter assembly mounting case 210 and the sound-deadening cartridge 110, thereby preventing unfiltered first gas from entering the first channel 10.

As an example, fig. 4A shows a schematic structural diagram of a high-pressure gas regulating device 600 provided according to the present application. Specifically, the high pressure gas adjusting apparatus 600 may include a pressure adjusting assembly 610, a flow rate adjusting assembly 620, and a connection pipe 630.

By way of example, fig. 4B illustrates a schematic structural diagram of a pressure adjustment assembly 610 provided in accordance with an embodiment of the present application. The pressure regulating assembly 610 may include a pressure regulating valve 611 and a first support drain 612. As an example, the pressure regulating valve 611 may be a pressure maintaining valve. The pressure maintenance valve is mounted on the first support drain 612. In some embodiments, the pressure regulation assembly 610 may further include an inlet fitting 613, a first outlet fitting 614, a second outlet fitting 615, an on-off valve 616, a pressure sensor 617, and/or a constrictor valve 618.

By way of example, fig. 4C illustrates a partial cross-sectional view of a pressure adjustment assembly 610 provided in accordance with an embodiment of the present application, and fig. 4D illustrates a partial cross-sectional view of a first support drain 612 provided in accordance with an embodiment of the present application.

Referring to fig. 4C and 4D, the first support drain 612 includes a first outer surface 612-a, a second outer surface 612-B, a third outer surface 612-C, a fourth outer surface 612-D, a fifth outer surface 612-E, and a sixth outer surface 612-F, wherein: the first outer surface and the second outer surface are opposed, the third outer surface and the fourth outer surface are opposed, and the fifth outer surface and the sixth outer surface are opposed.

The first support drainage component 612 includes a first chamber 6121, and a first flow passage 6122 and a second flow passage 6123 which are communicated with the first chamber 6121, wherein a first end 611-1 of the pressure regulating valve 611 is installed in the first chamber 6121, an end face of the first end 6111 is spaced from the bottom of the first chamber 6121 by a preset distance, so that a drainage cavity 6124 is formed between the first end 6111 and the side wall of the first chamber 6121, an air inlet of the pressure regulating valve 611 is communicated with the drainage cavity 6124, wherein the first flow passage 6122 is communicated with the drainage cavity 6124, the first support drainage component 612 drains air from the air inlet of the pressure regulating valve 611 through the first flow passage 6122 and via the drainage cavity 6124, the second flow passage 6123 corresponds to and is communicated with the air outlet of the pressure regulating valve 611, and the first support drainage component 612 drains the air flowing out of the air outlet of the pressure regulating valve 611 to a first target pipeline outside the pressure regulating assembly 610 through the second flow passage 6123. As an example, the first target circuit may be an oxygen circuit in a ventilator inhalation circuit.

In some embodiments, the inlet of the first flow passage 6122 is disposed at the first outer surface 612-a of the first support baffle 612, and the outlet of the first flow passage 6122 is disposed at the sidewall of the first chamber 6121 and near the bottom of the first chamber 6121; the outlet of the second flow passage 6123 is disposed on the second outer surface 612-B of the first support drain 612, the second outer surface 612-B is opposite to the first outer surface 612-a, the inlet of the second flow passage 6123 is disposed on the sidewall of the first chamber 6121 and is close to the inlet of the first chamber 6121, wherein the inlet of the first chamber 6121 is on the fifth outer surface 612-E of the first support drain 612.

In some embodiments, the first support drain 612 further comprises a second chamber 6125, a third flow passage 6126, and a fourth flow passage 6127. Wherein the second chamber 6125 is in communication with the second flow passage 6123. The third flow passage 6126 is in communication with the second chamber 6125. The second chamber 6125 is configured to provide an installation space for the flow-regulating member 618, and a flow-limiting flow passage 6180 is formed between the second chamber 6125 and the first end 618 of the flow-regulating member 618, one end of the flow-limiting flow passage 6180 is communicated with the second flow passage 6123, the other end of the flow-limiting flow passage 6180 is communicated with the third flow passage 6126, the flow-limiting flow passage 6180 is configured to guide the gas in the second flow passage 6123 to the third flow passage 6126, wherein the flow-regulating member 618 is at least partially installed in the second chamber 6125, the distance between the outer wall of the first end 618-1 of the flow-regulating member 618 and the inner wall of the second chamber 6125 can be adjusted so as to form a size-adjustable flow-limiting flow passage 6180 between the first end 618-1 of the flow-regulating member 618 and the inner wall of the second chamber 6125, and a sealing member 619 is disposed between the second end 618-2 of the flow-regulating member 618 and the inner wall of the second chamber 6125 to prevent the gas in the flow-limiting flow passage 6180 from leaking; the third flow passage 6126 is configured to divert gas to the inlet of the on-off valve 616; and the fourth flow passage 6127 is configured to direct the gas exiting the outlet of the on-off valve 616 to a second target line outside the pressure regulating assembly 610. Illustratively, the first end 618-1 of the flow-regulating member 618 is tapered, and the second end 618-2 of the flow-regulating member 618 is threadedly coupled to the inner wall of the second chamber 6125. As an example, the on-off valve 616 may be a fogging on-off valve. As an example, the flow regulator 618 may be a needle valve. As an example, the second target circuit may be an aerosolization branch or a purge branch in a ventilator.

In some embodiments, the second chamber 6125 includes a through-hole structure beginning at the sixth outer surface 612-F of the first support drain 612 and ending at a sidewall of the second flow passage 6123; the third flow passage 6126 comprises a through hole structure starting from the third outer surface 612-C of the first support drain 612 and ending at the inner wall of the second chamber 6125; the fourth flow passage 6127 starts from the third outer surface 612-C of the first support drain 612 and ends at the second outer surface 612-B of the first support drain 612, wherein the fourth flow passage 6127 includes a first blind hole structure starting from the third outer surface 612-C and a second blind hole structure starting from the outer surface 612-B, and wherein the bottom of the first blind hole structure is communicated with the bottom of the second blind hole structure.

By way of example, fig. 4E illustrates a partial cross-sectional view of a pressure adjustment assembly 610 provided in accordance with an embodiment of the present application. The first support drainage member 612 further comprises a pressure detection duct 6128, the pressure detection duct 6128 is communicated with the drainage cavity 6124, and the pressure detection device 616 can measure the pressure at the air inlet end of the pressure regulating valve 611 through the pressure detection duct 6128, wherein the pressure detection duct 6128 comprises a through hole structure starting from the third outer surface 612-C of the first support drainage member 612 and ending at the inner wall of the first cavity 6121.

As an example, fig. 4F illustrates a schematic structural diagram of a flow rate adjustment assembly 620 provided according to an embodiment of the present application. The flow regulating assembly 620 includes a flow regulating valve 621 and a second support drain 622. By way of example, fig. 4G illustrates a partial cross-sectional view of a second support drain 622 provided in accordance with an embodiment of the present application.

Referring to fig. 4F and 4G, the second supporting drain 622 includes a first connection chamber 6221 and a second connection chamber 6222, an inlet 6221-1 of the first connection chamber 6221 is a high pressure gas inlet, and a sidewall of the second connection chamber 6222 is provided with a low pressure gas inlet 6222-3.

The second support drain 622 includes a first outer surface 622-A, a second outer surface 622-B, a third outer surface 622-C, a fourth outer surface 622-D, a fifth outer surface 622-E, and a sixth outer surface 622-F, the first outer surface and the fourth outer surface being opposed, the second outer surface and the fifth outer surface being opposed, the third outer surface and the sixth outer surface being opposed, wherein the high pressure gas inlet 6221-1 and the low pressure gas inlet 6222-3 are disposed at the first surface 622-A, the first connecting chamber outlet 6221-2 and the second connecting chamber inlet 6222-1 are disposed at the second surface 622-B adjacent to the first surface 622-A, and the second connecting chamber outlet 6222-2 is disposed at the fourth surface 622-D opposed to the second surface 622-B.

The second connecting cavity 6222 includes an inlet air passage, an outlet air passage, and a buffer air passage disposed between the inlet air passage and the outlet air passage, wherein the inlet air passage and the outlet air passage are cylindrical air passages, and the diameter of the inlet air passage is smaller than that of the outlet air passage.

The second support drain 622 can also include mounting holes 6223 through which fasteners can be passed to mount the flow regulating assembly 620 to the target site.

A flow regulating valve 621 may be installed on the second supporting drain 622. The flow regulating valve 621 is configured to regulate the flow rate of the high-pressure gas to a target flow rate. The inlet of the flow regulating valve 621 communicates with the outlet 6221-2 of the first connecting chamber. The air outlet of the flow regulating valve 621 is communicated with the inlet 6222-1 of the second connecting cavity.

Flow adjustment assembly 620 may also include a flow sensor 623. The flow sensor 623 may be in communication with the outlet 6222-2 of the second connecting chamber and configured to measure the flow of gas out of the outlet 6222-2 of the second connecting chamber. In some embodiments, the outlet end of the flow sensor 623 may also be connected to a transition tube 624.

The flow regulation assembly 620 may also include a low pressure gas fitting 625 mounted at the low pressure gas port 6222-3. Of course, in some embodiments, a high pressure gas connector 626 may be connected to the high pressure gas inlet.

With continued reference to fig. 4A, one end of the connection pipe 630 is communicated with the gas outlet of the second flow passage, and the other end is communicated with the high-pressure gas inlet of the flow regulating valve, and is configured to guide the gas flowing out of the gas outlet of the pressure regulating valve to the flow regulating valve.

To sum up, the high-pressure gas adjusting device 600 that this application provided has atomizing gas outlet and atomizing on-off valve in its design, and atomizing gas outlet is linked together with the atomizing joint, and the atomizing joint, atomizing gas outlet and atomizing on-off valve have constituteed the atomizing branch road, and according to patient's needs, the break-make of atomizing branch road is atomized to the atomizing on-off valve control, has realized oxygen branch road and atomizing branch road integrated design. The outlet of the high pressure gas regulating device 600 is designed with a low pressure oxygen inlet connector, the low pressure oxygen inlet connector is communicated with the low pressure oxygen connector, and when the hospital can not provide high pressure oxygen or the pressure of the high pressure oxygen source is insufficient under some special conditions, the low pressure oxygen connector delivers oxygen for the patient to treat.

As an example, fig. 5 shows a schematic overall structure diagram of a ventilator 003 provided according to an embodiment of the present application.

The ventilator 003 can include a primary airway module. The main gas circuit module may include, but is not limited to, a turbine box assembly 8201, a high pressure oxygen assembly 8202, a low pressure oxygen interface 8203, an oxygen flow sensor 8204, a total flow sensor 8205, a temperature sensor 8206, an oxygen battery 8207, and/or an air intake valve 8208.

The turbine box component 8201 is mainly used as an air power source of a respirator and provides fresh air for the breath of a patient. The turbine box assembly 8201 may include the acoustic mixing device, filter assembly, damper assembly, and fan as previously described. The silencing and mixing device, the filtering component, the damping component and the fan are described in the foregoing, and are not described in detail here. Of course, the silencing and mixing device, the filtering component and the shock absorption component can be in other structures without affecting the core spirit of the application.

The hyperbaric oxygen assembly 8202 is mainly used for regulating unstable hyperbaric oxygen from a hyperbaric oxygen source into stable low-pressure oxygen and providing a set oxygen flow according to the needs of a patient. The high pressure oxygen assembly 8202 may be a high pressure gas regulating device as previously described. Of course, the hyperbaric oxygen assembly 8202 may be of other configurations without affecting the core spirit of the present application.

An oxygen flow sensor 8204 is connected with the air outlet of the high-pressure oxygen assembly 8202 and used for monitoring the oxygen flow.

A low-pressure oxygen inlet connector is designed at an air outlet of the high-pressure oxygen component 8202 and communicated with the low-pressure oxygen interface 8203. When the hospital can not provide the high-pressure oxygen or the pressure of the high-pressure oxygen source is insufficient under some special conditions, the low-pressure oxygen interface 8203 is used for delivering the oxygen to the patient for treatment.

The front end of the total flow sensor 8205 is connected with the air outlet of the turbine box assembly 8201, and the rear end is directly communicated with an air suction valve 8208 through a silica gel hose 8212. . The total flow sensor 8205 can be a bidirectional flow sensor, and can be used for monitoring the total flow of the air-oxygen mixed gas output by the respirator and testing the expiratory flow rate.

The temperature sensor 8206 is connected to the silicone hose 8212 in a bypassing manner and is used for monitoring the temperature of the inhaled air flow of the patient so as to prevent the inhaled air from being over-heated and causing harm to the patient.

An oxygen concentration testing device 8207 is connected to the side wall of a main airway flow channel of an air suction valve 8208 and is mainly used for monitoring the concentration of oxygen entering an airway of a patient in real time and feeding back to a control system.

The inhalation valve 8208 is used as an external interface of the respirator and is communicated with an external breathing pipeline. By way of example, the suction valve 8208 can be constructed identically to the general outlet connection described above.

Zero valve 8209 is connected with each pressure sensor for timing zero calibration to the pressure sensor, and avoids overlarge measurement data error caused by zero drift of the pressure sensor.

Blood oxygen test connector 8210 and CO2 test connector 8211 are used to monitor the blood oxygen content or CO2 content, respectively, of the patient.

The purging module is mainly used for giving continuous purging airflow to the pressure sampling pipe at the patient end when the breathing machine works, and preventing the inaccurate pressure measurement caused by blocking the pressure sampling pipe by water vapor or pollutants in the breathing pipeline. The purging module mainly comprises a gas-containing component 8101, a pressure sampling joint 8102 and a purging switch valve 8103. The purging switch valve 1803 is mainly used for controlling the on-off of the air volume component 8101 during inflation, when a patient inhales, the purging switch 8104 is opened, the air passage in the respirator is communicated with the air volume component 8101, and inflation is started. When the patient starts to exhale, due to the reduction of airway pressure in the ventilator, the purge switch 8104 is turned off, preventing the gas in the gas capacitor assembly 8101 from flowing backwards. The interface of the pressure sampling joint 8102 in the respirator is communicated with the air outlet of the air-capacitor component 8101 and a pressure sensor arranged on the ventilation control panel 8507 through a Y-shaped three-way joint. The interface of the pressure sampling joint 8102 located outside the respirator is communicated with a patient end pressure sampling pipe.

The ventilator 003 may also include peripheral accessory modules. The peripheral accessory module can comprise external accessories such as a disease pressure sampling adapter, a single breathing pipeline, a humidifier and the like.

The ventilator 003 may also include a control module. The control module is used for carrying out ventilation control, ventilation monitoring and ventilation control on the whole machine, and comprises, but is not limited to, a capacitor PCBA board 8501, a power supply control 8502, a turbine control board 8503, an AD-DC power supply module 8504, an AC socket 8505, a power switch 8506 and a ventilation control board 8507.

The capacitor PCBA board 8501 is mainly used for stabilizing the power supply voltage of the turbine and ensuring the stable operation of the turbine. The size and the number of the capacitors can be increased or decreased as required.

The power management board 8502 is mainly used to manage charging of the battery and to transmit power to the ventilation control board 8507.

The turbine control plate 8503 is used primarily to control the operational bleed of the turbine.

The AC-DC power supply module 8504 is mainly used to convert the input 220V AC power into DC power usable by the ventilator.

The AC socket 8505 is an external 220V alternating current interface.

The power switch 8506 is used to control the on/off of the ventilator.

The aeration control panel 8507 is mainly used to control and monitor the whole working process and state of the ventilator to ensure the normal operation of the ventilator.

The ventilator 003 may also include a display module. The display module is mainly used for displaying the setting parameters and the breathing parameters of the patient during treatment in real time so as to assist doctors in observing and diagnosing the treatment condition of the patient in real time.

In summary, the present application provides a noninvasive ventilator. The noninvasive ventilator adopts the turbine as an air source, so that an air compressor is omitted, and air sources are not required to be equipped in hospitals. The noninvasive ventilator is provided with a turbine box assembly, and a filter is arranged at an air inlet of the turbine box assembly, so that dust and germs in air can be effectively filtered. The labyrinth silencing chamber is designed at the rear end of the filter, so that the turbine noise can be effectively reduced, and the treatment environment of a patient is improved. The turbine box assembly wraps and supports the turbine by adopting a damping material, and a good damping effect is achieved. The noninvasive ventilator comprises a high-pressure oxygen component and a low-pressure oxygen source interface. When the pressure of the oxygen source in the hospital is not enough or the high-pressure oxygen source is not available, the low-pressure oxygen can be introduced into the low-pressure oxygen source interface to continue treating the patient. The noninvasive ventilator contains a purging component, and can effectively prevent water drops in the patient end pressure sampling tube from being condensed to influence the measurement precision. The noninvasive ventilator is also provided with a blood oxygen module and a CO2 module, and can assist a doctor to monitor the blood oxygen content or the CO2 content of a patient when necessary so as to make a better diagnosis. An oxygen battery is designed at the air inlet of the noninvasive ventilator to assist in monitoring the oxygen concentration of the inhaled gas of the patient.

In conclusion, upon reading the present detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure can be presented by way of example only, and not limitation. Those skilled in the art will appreciate that the present application is intended to cover various reasonable variations, adaptations, and modifications of the embodiments described herein, although not explicitly described herein. Such alterations, improvements, and modifications are intended to be suggested by this disclosure, and are within the spirit and scope of the exemplary embodiments of this disclosure.

The terminology used in the present application and the drawings accompanying the present application are for the purpose of describing particular example embodiments only and are not intended to be limiting. Furthermore, certain terminology has been used in this application to describe embodiments of the disclosure. For example, "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present disclosure. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various portions of this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined as suitable in one or more embodiments of the disclosure.

It should be appreciated that in the foregoing description of embodiments of the disclosure, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of the subject disclosure. This application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this invention pertains. This is not to be taken as an admission that any of the features of the claims are essential, and it is fully possible for a person skilled in the art to extract some of them as separate embodiments when reading the present application. That is, the embodiments in the present application may also be understood as an integration of a plurality of sub-embodiments. And each sub-embodiment described herein is equally applicable to less than all features of a single foregoing disclosed embodiment.

In some embodiments, numbers expressing quantities or properties used to describe and claim certain embodiments of the application are to be understood as being modified in certain instances by the term "about", "approximately" or "substantially". For example, "about," "approximately," or "substantially" can mean a ± 20% variation of the value it describes, unless otherwise specified. Accordingly, in some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that may vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the embodiments of the application are approximations, the numerical values set forth in the specific examples are reported as precisely as possible.

Each patent, patent application, publication of a patent application, and other material, such as articles, books, descriptions, publications, documents, articles, and the like, cited herein is hereby incorporated by reference. All matters hithertofore set forth herein except as related to any prosecution history, may be inconsistent or conflicting with this document or any prosecution history which may have a limiting effect on the broadest scope of the claims. Now or later associated with this document. For example, if there is any inconsistency or conflict in the description, definition, and/or use of terms associated with any of the contained materials with respect to the description, definition, and/or use of terms associated with this document, the terms in this document shall prevail.

Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Accordingly, the disclosed embodiments are presented by way of example only, and not limitation. Those skilled in the art can implement the invention in the present application in alternative configurations according to the embodiments in the present application. Thus, embodiments of the present application are not limited to those embodiments described with precision in the application.

Claims

1. A ventilator, comprising:

the air inlet is connected with the first gas pipeline;

the high-pressure oxygen inlet is connected with the second gas pipeline;

the high-pressure oxygen regulating device is connected in the second gas pipeline at the downstream of the high-pressure oxygen inlet and at the upstream of the mixing chamber;

a blower connected in the third gas line downstream of the mixing chamber and upstream of the patient interface;

at least one flow sensor connected in the first gas line, the second gas line and/or the third gas line; and

at least one pressure sensor connected to the first gas line, the second gas line and/or the third gas line.

2. The ventilator of claim 1, wherein the at least one flow sensor comprises a first flow sensor and a second flow sensor, wherein:

the first flow sensor is connected in a second gas line downstream of the hyperbaric oxygen modulation device and upstream of the mixing chamber; and

the second flow sensor is connected in a third gas line downstream of the mixing chamber and upstream of the patient interface.

3. The ventilator of claim 1 wherein said hyperbaric oxygen regulation means comprises:

the pressure regulating device comprises a pressure regulating valve and a first supporting drainage piece, wherein the first supporting drainage piece comprises a first chamber, a first flow passage and a second flow passage, the first flow passage and the second flow passage are communicated with the first chamber, the first end of the pressure regulating valve is installed in the first chamber, the end face of the first end is spaced from the bottom of the first chamber by a preset distance, so that a drainage cavity is formed between the first end and the side wall of the first chamber, the air inlet of the pressure regulating valve is communicated with the drainage cavity, the first flow passage is communicated with the drainage cavity, the first supporting drainage piece conducts air to the air inlet of the pressure regulating valve through the first flow passage and the drainage cavity, the second flow passage corresponds to and is communicated with the air outlet of the pressure regulating valve, and the first supporting drainage piece conducts the air flowing out of the air outlet of the pressure regulating valve to an air passage at the downstream of the pressure regulating assembly through the second flow passage; and/or

Flow control device supports the drainage piece including flow control valve and second, wherein, the second supports the drainage piece and includes first connection chamber and second connection chamber, the entry in first connection chamber is the high-pressure gas entry, the lateral wall in second connection chamber is provided with the low-pressure gas entry, flow control valve installs on the second supports the drainage piece, flow control valve's air inlet with the export intercommunication in first connection chamber, flow control valve's gas outlet with the entry intercommunication in second connection chamber.

4. The ventilator of claim 1, comprising an acoustic mixing device, said acoustic mixing device comprising a first passage, a second passage, and a mixing chamber, said first passage and said second passage communicating with said mixing chamber, said first passage forming at least a portion of said first gas line, said second passage forming at least a portion of said second gas line, said mixing chamber forming said mixing chamber, said mixing chamber comprising a mixing chamber outlet, said mixing chamber outlet communicating with an intake of said blower,

the silencing and mixing device comprises a silencing box and a plurality of silencing pieces, wherein the silencing pieces are arranged in the silencing box, so that the silencing and mixing device forms the first channel and the mixing cavity, and the silencing pieces are made of silencing materials and are configured to eliminate noise of gas entering the fan through the silencing and mixing device.

5. The ventilator of claim 4, further comprising a filter device connected in the first gas line downstream of the air inlet and upstream of the sound attenuation cartridge,

wherein the filtering device comprises an installation shell, primary filter cotton, high-efficiency filter cotton and a sealing gasket, the installation shell comprises an installation shell inlet, an installation shell outlet and an installation cavity communicated with the installation shell inlet and the installation shell outlet, the primary filter cotton and the high-efficiency filter cotton are arranged in the installation shell and are configured to filter air passing through the filtering device, the sealing gasket is arranged at one end of the installation shell outlet, the installation shell is designed with a buckle,

the silencing box further comprises a filtering device accommodating cavity, the filtering device accommodating cavity is configured to accommodate the filtering device, a clamping groove is formed in a wall plate of the filtering device accommodating cavity, the clamping groove is configured to allow the buckle of the mounting shell to be clamped in, and therefore the filtering device is fixed in the filtering device accommodating cavity.

6. The ventilator of claim 1 further comprising a shock assembly, said shock assembly comprising a shock box and a shock absorber,

the shock absorption box is provided with a cavity structure, the fan is at least partially arranged in the shock absorption box,

the shock absorbing member is filled in a space between the fan and the inner wall of the shock absorbing box to reduce the vibration of the fan during operation,

the shock absorption box comprises a first opening and a second opening, the first opening corresponds to the air inlet of the fan and is communicated with the air inlet of the fan so as to guide the mixed gas to the air inlet of the fan from the first opening, and the second opening corresponds to the air outlet of the fan and is configured to allow an air outlet connecting pipe connected to the air outlet of the fan to penetrate so as to guide the mixed gas flowing out of the air outlet to an air path at the downstream of the fan.

7. The ventilator of claim 6, wherein the shock assembly further comprises:

one end of the air inlet connecting pipe is connected with the air inlet connecting part of the damping box, and the other end of the air inlet connecting pipe is connected with the air inlet of the fan, so that the air inlet connecting part of the damping box is communicated with the air inlet of the fan, wherein the air inlet connecting part of the damping box is of a hollow pipe structure, and the first opening is an inlet of the hollow pipe structure; and/or

And one end of the air outlet adapter tube is connected with an air outlet of the fan, a first interface is arranged on the part of the air outlet adapter tube, which is positioned outside the shock absorption box, the at least one pressure sensor comprises a first pressure sensor connected to a third gas pipeline at the downstream of the fan and at the upstream of the patient interface, and the first pressure sensor is connected with the first interface and is connected to the third gas pipeline through the first interface.

8. The ventilator of claim 1, further comprising:

an oxygen concentration sensor coupled to a third gas line downstream of the blower and upstream of the patient interface and configured to measure an oxygen concentration of a gas in the third gas line, wherein the oxygen concentration sensor is disposed at an end of the third gas line proximate to the patient interface,

the breathing machine further comprises an outlet connecting piece, the outlet connecting piece is provided with a gas flow channel, an outlet of the gas flow channel is the patient interface, the side wall of the gas flow channel is provided with a second interface, and the oxygen concentration sensor is connected with the second interface and connected to the third gas pipeline through the second interface.

9. The ventilator of claim 1, wherein the ventilator is a noninvasive ventilator, the ventilator further comprising:

a temperature sensor connected to the third gas line downstream of the blower and upstream of the patient interface; and/or

A leak orifice located in the third gas line downstream of the blower and upstream of the patient interface.

10. The ventilator of claim 1, further comprising:

the zero calibration valve is connected with more than one target pressure sensor and is configured to perform timing zero calibration on the target pressure sensors, so that the phenomenon that the error of measured data is overlarge due to zero drift of the target pressure sensors is avoided;

a blood oxygen test connector configured to allow access to a blood oxygen test device for monitoring blood oxygen content of a patient;

CO ₂ a test joint configured toAllowing CO to pass ₂ The test device is switched on to thereby detect CO in the gas exhaled by the patient ₂ Monitoring the content; and/or

And the purging module is used for giving a purging airflow to the sensor sampling pipe during operation so as to prevent a pollution source from blocking the sensor sampling pipe or polluting the sensor through the sensor sampling pipe.