Ventilator Device and Method

Abstract

The present invention provides a respiratory therapy device configured to deliver a flow of breathable gas to a patient. [Solution] The ventilator 10 comprises a breathable air outlet, an outside air inlet, and a pneumatic block module, the pneumatic block module being a volute assembly having an inlet air passage, a mount for a blower, and an outlet air passage, the blower comprising a volute assembly mounted on a mount such that the blower's impeller is in a flow path connecting the inlet air passage and the outlet air passage, and a casing sealing the volute assembly, the casing having an air passage within the casing connected to the air port of the volute assembly, the inlet air passage of the volute assembly being in fluid communication with the outside air inlet, and the outlet air passage of the volute assembly being in fluid communication with the air outlet.

Description

[Technical Field]

[0001] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application is a Japanese Patent Application No. 2012-212683 filed on September 26, 2012. No. 13 / 624, filed September 21, 2012, which is a divisional application of U.S. patent application Ser. No. 13 / 624, filed September 21, 2012. No. 167, U.S. Patent Application No. 13 / 613,958, filed September 13, 2012; and U.S. Provisional Patent Application No. 61 / 539,258, filed September 26, 2011. No. 6,029,799, filed on Oct. 1, 2002, the disclosures of which are hereby incorporated by reference. shall be included.

[0002] [Field of the Invention] TECHNICAL FIELD The present technology relates to ventilators and other respiratory treatment devices that provide respiratory assistance to patients. [Background technology]

[0003] A ventilator mechanically moves air into and out of the lungs. The ventilator helps the patient breathe by inflating and deflating the lungs. Used to replace or supplement the patient's normally used muscle movements. It is said.

[0004] The ventilator delivers sterile breathable gas (usually a ventilator) at appropriate times during the patient's breathing cycle. Air (with or without supplemental oxygen) is delivered to the patient at one or more therapeutic pressures. The pressure changes are large during inspiration and small during expiration. Therapeutic pressure is synchronized with breathing to provide a small pressure to the Also known as ventilation pressure.

[0005] A ventilator typically consists of a flow generator, an inlet filter, a mask, and a mask to hold the flow generator in place. air delivery conduits that connect to the pump, various sensors, and a microprocessor-based control system. Optionally, instead of a mask, an organ incision tube is provided as a patient interface. Flow generators are often used as interfaces. In some cases, the speed of the blower may be increased. A motor brake is incorporated to reduce the inertia of the motor and impeller and to allow for quicker deceleration. The braking action allows the blower to synchronize with the exhalation despite its inertia. In some cases, the flow generator may be a motor. Instead of rate control, the resulting air is released to atmosphere as a means of varying the pressure delivered to the patient. The motor may be equipped with a valve that can release the pressure. Sensors may be provided to measure, among other things, motor speed, mass The device is adapted to measure the flow rate and outlet pressure by means of a pressure transducer or the like. Optionally, the air delivery circuit may include a humidifier and / or a heating element in its path. The control device shall have data storage capabilities with or without centralized data retrieval and display capabilities. It's good to be prepared.

[0006] The ventilator also controls the timing and pressure of the breath delivered to the patient and These methods of controlling and monitoring the patient are typically Specifically, this includes volume-controlled and pressure-controlled methods. Volume-controlled methods include, among others, pressure-controlled methods. Positive volume controlled ventilation (PRVC), volume ventilation (VV), and volume controlled continuous mandatory ventilation (VC) -CMV) technology. Pressure-controlled methods include, among others, auxiliary control (AC) technology, Intermittent forced ventilation (SIMV) technique, controlled mechanical ventilation (CMV) technique, pressure support ventilation (P SV), continuous positive airway pressure (CRAP), or positive end-expiratory pressure (PEEP) techniques Examples include:

[0007] Ventilators are used to treat conditions that affect the muscle tissue needed for breathing, such as muscular dystrophy. -, polio, amyotrophic lateral sclerosis (ALS), and Guillain-Barré syndrome A ventilator provides respiratory support to a patient. to treat disorders such as respiratory disorders or disorders, neuromuscular or musculoskeletal disorders, and disorders of respiratory control In addition, ventilators are used for the treatment of mild obstructive sleep apnea (OSA). Sleep-disordered breathing (SDB), upper airway obstruction due to allergies, or early upper airway obstruction Ventilators may also be used for illnesses related to viral infections. In sedated patients or those with severe injuries, e.g., high spinal cord injuries and head trauma In addition, ventilators may be used to provide respiratory assistance. The airway pressure may be configured to expand unfilled areas, for example collapsed alveoli.

[0008] Ventilators are traditionally machines that require highly trained personnel to service and repair. The ventilator is a complex device. Within the housing are several devices that control and measure the characteristics of ventilation. There are numerous tubes connecting the mechanical and electrical valves and sensors used to These tubes are typically located at various positions within the ventilator housing. are connected to the ports and devices individually. Summary of the Invention [Problem to be solved by the invention]

[0009] An aspect of some embodiments of the present technology is a device for a ventilator or other respiratory treatment device. It should be noted that a ventilator or other respiratory treatment device is used herein as a general Another aspect of some embodiments of the present technology is that Another object of some embodiments of the present technology is to provide an uncomplicated ventilator. An embodiment is a pneumatic block module that integrates air passages within a ventilator. The air module includes a volute assembly that provides the air passages for the blower and ventilator. It would be good to have this in mind. [Means for solving the problem]

[0010] The present technology is a respiratory treatment device configured to provide a flow of breathable gas to a patient. a breathable air outlet, a fresh air inlet, and a pneumatic block module. In a medical device, the pneumatic block module contains the inlet air passage, the mount for the blower, and and an outlet air passage, wherein the blower has an impeller It is attached to the mount so as to be in the flow path connecting the inlet air passage and the outlet air passage. The volute assembly and the casing that seals the volute assembly. The air passage in the casing is connected to the air port of the volute assembly. and an inlet air passage of the volute assembly in fluid communication with the ambient air inlet. and an outlet air passage of the volute assembly is in fluid communication with the air outlet. The respiratory treatment device may be implemented as a respiratory treatment device.

[0011] The volute assembly may be a molded rigid plastic device and may be attached to the casing. The casing may be made of metal and may have a lower portion and a top cover. An air passage may be provided between the outside air inlet and the inlet air passage of the volute. The air passage in the casing may be formed between the bottom plate of the casing and the bottom plate cover.

[0012] A removable inlet filter assembly is located in line with the fresh air inlet. The removable inlet filter assembly may be housed within a casing that includes an air inlet. The casing and inlet filter assembly are removable from the housing. It has become a Noh play.

[0013] Even if the deformable connector is sandwiched between the volute assembly and the printed circuit board Well, the pressure sensor on the PCB is seated on the volute assembly When you insert the connector, it will line up with the port that the connector goes through. opens into an air passage in the volute assembly.

[0014] Some embodiments of the present technology provide a coupler for a gas routing module of a respiratory treatment device. The coupler may include a coupler body having a plurality of air pressure passages. The plug may also have first and second port connectors. The ventilator connector is designed to connect to a respiratory therapy device at the ventilator end of the coupler body. The coupler may also include first and second conduits. The first and second conduits may be integral with the coupler body, and The first and second port connectors are respectively configured as air pressure passages connected to the first and second port connectors. The coupler may further comprise an alignment ridge on the coupler body. The first and second port connectors are oriented to allow only one connection with the respiratory treatment device. It may be configured to limit

[0015] In some cases, the alignment ridges may be positioned on a connector that is inserted into a housing passageway of the respiratory treatment device. The alignment ridge may comprise a cylindrical space. The second port connector may be formed in a position offset inside the cylindrical space. The first port connector may be formed outside the cylindrical space. The second port connector may include a gas passage for exhaled pressure from the respiratory mask. , and may include a PEEP control gas passage for the proximal valve. The connecting ring may comprise a chamfered cylinder. The surface of the chamfered cylinder may be It may be configured to align with the exterior housing surface of the respiratory therapy device. Preferably, the coupler body may have a bent portion that tilts the direction of the air pressure passage of the coupler. stomach.

[0016] Some embodiments of the present technology provide a method for maintaining good ventilator operation. The method includes removing the pneumatic block from a compartment of the ventilator housing. The ventilator may be located within the patient environment. casing, volute assembly, blower, air passages, sensors and / or The method may include providing a calibration record. and testing the operation of the ventilator in the patient environment. It would be good to have this in mind.

[0017] In some cases, insertion may be required to operate the ventilator after inspecting the removed pneumatic block. The method may include placing the device back into the ventilator housing for testing. This may be done by a returned air pressure block. The method includes inserting a second pneumatic block into the ventilator housing to replace the removed pneumatic block. The test procedure for the ventilator may include inserting the second pneumatic block into the The process may be performed by a computer.

[0018] In some cases, the method may include inspecting the removed pneumatic block for reuse. Inspecting the removed pneumatic block may include cleaning the pneumatic block. Inspection of the removed pneumatic blocks may include inspecting one or more of the pneumatic blocks. Calibrating the operation of components, e.g., recording calibration data in a block calibration record. The inspection may be performed in the patient environment. Inspection should be performed simultaneously with the ventilator that is operational in the patient environment and that is removed from the patient environment. Optionally, the method may be performed by performing a step of inserting the inserted material prior to the insertion. This may include pre-calibrating the pneumatic block to be used.

[0019] Some embodiments of the present technology include a pneumatic valve that is removably inserted into the ventilator housing. The pneumatic blocking device includes a casing with an air passage and a blocking device. and a blower coupled to the volute assembly. The casing should enclose the volute assembly. The air passage of the casing should be The pneumatic block device may be connected to an air port on the volute assembly. may include an integrated calibration record,

[0020] Further embodiments and features of the present technology are described in the detailed disclosure, abstract, drawings, and claims below. It will be clear from the requirements.

[0021] Hereinafter, embodiments of the present technology will be described with reference to the accompanying drawings. [Brief explanation of the drawings]

[0022] [Figure 1] FIG. 1 is a perspective view of a ventilator device according to one embodiment of the disclosed technology; [Figure 2] FIG. 2 is a front view of the ventilator device of FIG. 1. [Figure 3] FIG. 2 is a rear view of the ventilator device of FIG. 1. [Figure 4] FIG. 2 is a bottom view of the ventilator device of FIG. 1. [Figure 5a] FIG. 1 is a top view of a chassis in accordance with an embodiment of the disclosed technology. [Figure 5b] FIG. 10 is a bottom view of a chassis according to an embodiment of the disclosed technology. [Figure 6a] FIG. 10 is a top view of a lower housing according to an embodiment of the disclosed technology. [Figure 6b] FIG. 10 is a bottom view of a lower housing according to an embodiment of the disclosed technology. [Figure 7a] FIG. 10 is a top view of an upper housing according to an embodiment of the disclosed technology. [Figure 7b] FIG. 10 is a bottom view of an upper housing according to an embodiment of the disclosed technology. [Figure 8] FIG. 1 is a schematic diagram of the interior of a housing of a ventilator device in accordance with an embodiment of the disclosed technology. [Figure 9a] FIG. 1 is a perspective view of a filter assembly according to an embodiment of the disclosed technology. [Figure 9b] FIG. 1 is a front view of a filter assembly according to an embodiment of the disclosed technology. [Figure 9c] FIG. 1 is a rear view of a filter assembly according to an embodiment of the disclosed technology. [Figure 10a] FIG. 1 is a front perspective view of an inlet filter according to an embodiment of the disclosed technology; [Figure 10b.10c] 1A and 1B are rear and front views of an inlet filter according to an embodiment of the disclosed technology; [Figure 10d] FIG. 10 is a rear perspective view of an inlet filter according to an embodiment of the disclosed technology; [Figure 11a] 9a-9c illustrate the insertion of a filter assembly according to FIGS. 9a-9c into a ventilator housing according to an embodiment of the disclosed technology. [Figure 11b] 9a-9c illustrate the insertion of a filter assembly according to FIGS. 9a-9c into a ventilator housing according to an embodiment of the disclosed technology. [Figure 12] FIG. 1 is a schematic diagram of the interior of a pneumatic block module in accordance with an embodiment of the disclosed technology. [Figure 13] FIG. 1 is an exploded perspective view of a pneumatic block module with volute assembly components. [Figure 14] FIG. 1 is a top view of the volute assembly. [Figure 15] FIG. 10 is a bottom view of the volute assembly. [Figure 16] Figures 16a and 16b are top and bottom perspective views of a primary seal according to an embodiment of the disclosed technology. [Figure 17] Figures 17a, 17b, and 17c are bottom, side, and top views of a sensor seal in accordance with an embodiment of the disclosed technology. [Figure 18a] FIG. 10 is a top view of an exhalation seal according to an embodiment of the disclosed technology. [Figure 18b] FIG. 10 is a top perspective view of an exhalation seal according to an embodiment of the disclosed technology; [Figure 18c] 1A-1C are side and front views of an exhalation seal according to an embodiment of the disclosed technology; [Figure 18d] FIG. 10 is a front view of an exhalation seal according to an embodiment of the disclosed technology. [Figure 19a] FIG. 1 is a front perspective view of an exhalation valve according to an embodiment of the disclosed technology. [Figure 19b] FIG. 1 is a front view of an exhalation valve according to an embodiment of the disclosed technology. [Figure 19c] FIG. 10 is a rear view of an exhalation valve according to an embodiment of the disclosed technology. [Figure 19d] FIG. 1 is a rear perspective view of an exhalation valve according to an embodiment of the disclosed technology. [Figure 20a] 19a-19d illustrate how the exhalation valve of FIGS. 19a-19d is connected to a ventilator in accordance with an embodiment of the disclosed technology. [Figure 20b] 19a-19d illustrate how the exhalation valve of FIGS. 19a-19d is connected to a ventilator in accordance with an embodiment of the disclosed technology. [Figure 20c] 19a-19d illustrate how the exhalation valve of FIGS. 19a-19d is connected to a ventilator in accordance with an embodiment of the disclosed technology. [Figure 21a] FIG. 1 is a front perspective view of an expiratory adaptor for a ventilator in accordance with an embodiment of the disclosed technology; [Figure 21b] FIG. 1 is a front view of an expiratory adaptor for a ventilator in accordance with an embodiment of the disclosed technology. [Figure 21c] FIG. 12 is a rear view of an expiratory adaptor of a ventilator in accordance with an embodiment of the disclosed technology. [Figure 21d] FIG. 1 is a rear perspective view of an expiratory adaptor for a ventilator in accordance with an embodiment of the disclosed technology. [Figure 22a] 21a-21d illustrate how the expiratory adapter of FIGS. 21a-21d is connected to a ventilator in accordance with an embodiment of the disclosed technology. [Figure 22b]21a-21d illustrate how the expiratory adapter of FIGS. 21a-21d is connected to a ventilator in accordance with an embodiment of the disclosed technology. [Figure 22c] 21a-21d illustrate how the expiratory adapter of FIGS. 21a-21d is connected to a ventilator in accordance with an embodiment of the disclosed technology. [Figure 23] FIG. 10 illustrates a conduit coupler adapted to connect to an expiratory adapter in a ventilator of the present technology. [Figure 24] FIG. 24 shows the coupler of FIG. 23 disconnected from the ventilator. [Figure 25] FIG. 24 is a top view of the coupler of FIG. 23. [Figure 26] FIG. 24 is a bottom view of the coupler of FIG. 23. [Figure 27] FIG. 24 is a left side view of the coupler of FIG. 23. [Figure 28] FIG. 24 is a right side view of the coupler of FIG. 23. [Figure 29] FIG. 24 is a perspective top view of the coupler of FIG. 23. [Figure 30] FIG. 24 is a perspective bottom view of the coupler of FIG. 23. DETAILED DESCRIPTION OF THE INVENTION

[0023] [Ventilator Housing-12] 1-4 show a ventilator comprising a housing 12, an exhalation inlet port 14, and an inhalation outlet port 16. The ventilator 10 shown in FIG. 1 is a ventilator that can be inserted into the trachea of ​​a patient. The device may be connected to a probe (not shown) or may be fitted over the patient's nose or mouth or both. may be connected to a suitable face or nose mask or otherwise The housing for the ventilator may be attached to a patient to assist breathing. It may be portable and may include a handle 18 for supporting the ventilator. The housing comprises an upper housing case 20, a chassis 21, and a lower housing case 22, which may be connected together to form the outer surface of the ventilator. However, the housing may have other configurations, such as an upper casing and a lower casing. The structure may have only two components with a ring, or may have four or more components. It should be understood that the present invention may have various components.

[0024] As can be seen in Figures 5a and 5b, the chassis 21 is The chassis 21 preferably provides a structural framework for the inlet filter support 17. 6 and inlet seal support 178. These supports 176, 178 , respectively, the inlet filter assembly 36 and the inlet seal assembly 38, which are described in more detail below. The inlet seal 38 also secures the inlet to the pneumatic block module. The inlet seal 38 is configured to couple to the inlet module 56. Preferably, the inlet seal 38 is made of silicone. The inlet seal is formed from a compliant material such as a pneumatic block module 56. Preferably, the nozzle is overmolded at the entrance of the nozzle.

[0025] The chassis 21 may be provided with an air pressure block seat. To facilitate alignment and assembly of the pneumatic block module 56, The air pressure block sheet 56 is arranged inside the air pressure block sheet. 1 may include a portion of the handle 18.

[0026] The rear of the chassis 21 has various interfaces for various connections and switches on the rear panel. For example, electrical connectors, switches, data connections, and and interfaces for oxygen connections.

[0027] The chassis 21 houses the components of the ventilator 10, such as the cooling fan 68, the PCB 86, and multiple interfaces for positioning and holding the components of the expiratory section 31. For example, the exhalation section 31 of the chassis 21 is provided with an exhalation valve, as shown in FIG. Positive end-air pressure (PEEP) supply port 172, sensor filter interface 168 and an exhaled airflow sensor interface 170. To control PEEP, a PEEP supply port 172 is connected to a port of the PEEP solenoid valve 140. This allows the PEEP blower 124 to 200. On the main PCB To protect the sensor placed in the The sensor filter is inserted into the sensor filter interface 168. To measure the expiratory flow rate, an expiratory flow sensor (shown in Figure 5a) The expiratory flow sensor interface 170 is configured to be disposed within the expiratory flow sensor interface 170. , configured to receive an exhalation seal 70. The exhalation seal 70 is The filter and expiratory flow sensor are held and sealed, as described in more detail below. 172. The PEEP supply port 172 is configured to provide a connection to the PEEP supply port 172 as shown.

[0028] The expiratory section 31 of the ventilator 10 receives exhaled air from a patient, for example, through the expiratory inlet port 14. The exhalation interface module is configured to allow insertion of an exhalation interface module into the exhalation interface module. As the exhalation interface module, an exhalation valve 200 and an exhalation adapter 202 ( 19a to 19d and 21a to 21d, respectively).

[0029] As can be seen from Figures 6a and 6b, the lower housing case 22 includes a battery compartment. 60. The battery compartment 60 accommodates a removable battery (not shown). and interface with the battery, specifically Battery connector interface 62 for inserting or removing the battery A removable battery cover 52 is attached to the bottom to allow access for The removable exhalation cover 48, the oxygen sensor (shown in FIG. 5a), The oxygen sensor cover seat 54S accommodates the oxygen sensor cover 54, and the heat dissipation of the components. A grill 44 for allowing the outlet is also provided on the outer bottom surface, as will be described below with reference to FIG. The lower housing also prevents the ventilator 10 from sliding off smooth surfaces. One non-slip foot or gripping surface or one or more non-slip feet or gripping surfaces to prevent The base is provided with feet 53, for example thermoplastic polyurethane (TPU) feet. Alternatively, the gripping legs 53 may be used to hold the ventilator in place to prevent spilled water from pooling at the bottom of the ventilator. 10. Also, part of the handle 18 is attached to the lower housing. It is arranged in a gasket 22.

[0030] As can be seen in FIGS. 7a and 7b, the upper housing case 20 is and an interface for receiving a user interface display device 24. As shown in FIG. 1, the housing includes a computer or A processor-driven user interface display device 24, e.g., a computer Preferably, the device has a liquid crystal display (LCD) adapted to receive touch input for The display device must be located on the housing so that the ventilator can be easily viewed while in use. The alarm indicator light bar 26, e.g. For example, light-emitting diode (LED) light bars and audible or visual alarms can be silenced. A button 28 may be provided adjacent to the display. However, other known user User interface systems, such as screens, buttons, dials, keys, or It should be understood that a combination thereof may also be used. The case 22 and upper housing case 20 assemble the complete ventilator housing 12. The chassis may have a plurality of screw bosses 174 that are connected to each other to secure the chassis. 21 is assembled between the upper housing case 20 and the lower housing case 22. The screw boss 174 is aligned with a specific complementary screw boss 17 on one of the other housing components. Ease of assembly is enhanced by providing various lengths configured to connect to the 4. It is advisable that the system is designed to promote

[0031] FIG. 2 shows an exhalation routing module configured for removably insertion into the exhalation portion of the device. 1 shows a ventilator with a valve, in which the expiratory section is further described with reference to the drawings. As will be explained, this may be a section of the device. This section has a mating gas port interface. By using a gas routing module, various gas routing modules can be inserted into the compartment. The interface has a fixed, specific shape (e.g., a molded structure) so that A plurality of gas port connections are provided. As described in more detail herein, Each expiratory gas routing module serves several distinct internal flow paths or functions. The module may be configured with gas passages, which may be configured to: This can be achieved without the need for tubing. coupled to the structure of the gas port interface (e.g., having a seal) of the air compartment It is connected to the designated gas port interface of the module. It can be easily inserted into the expiratory section to connect with the gas port interface of the expiratory section. This allows the respiratory pressure device, together with the inserted modules, to perform various treatment protocols. In this sense, the gas port interface of the module Depending on the desired function of the respiratory treatment device, each of the various modules may be connected to a complementary Standardized configuration (dimensions) allows for easy insertion into the gas port interface The modular structure and fixed complementary gas pumps The compartment structure with a port interface allows for individual differences within the tubing for each port. This allows multiple gas connections to be mated together substantially simultaneously, rather than being pushed in and out. Modules can be inserted or installed into the compartment as shown. Such a fixed structure's complementary interface facilitates simplified assembly. In addition, since the structure of the module fits into the structure of the compartment at only one arrangement position, Assembly can be done faster. Incorrect gas connections, e.g., connecting to the wrong port, can be avoided. Tube connections are avoided.

[0032] In the example of FIG. 2, the expiratory gas routing module is an exhalation valve 200 connectable within the expiratory section 31. The exhalation valve, which will be described in more detail with reference to Figures 19 and 20, has an exhalation outlet port 2 Optionally, the exhaled breath routing module includes a 21 and 22. The expiratory adapter 202 is also adapted to fit within the expiratory portion 31. The adapter 202 includes a positive end-expiratory pressure (PEEP) control port 246. The P control port 246 is connected to the adapter pressure inlet port 244 on the front side of the housing 12. The PEEP control port is located adjacent to the ventilator. When used in conjunction with the adapter pressure inlet port 244.

[0033] As shown in FIG. 3, the rear surface of the housing 12 (see FIGS. 9, 10 and 11) The patient may be provided with a filter assembly 36 (described in more detail below with reference to the accompanying drawings). Air intended for delivery into the lungs is drawn into an air inlet associated with the filter assembly. The air passes through a permeable filter membrane inside the filter, This will enter the air passageway that allows air to flow to the patient.

[0034] The rear of the housing houses the computer network, alarm system, and pulse oximetry. to communicate with digital devices such as sensors (e.g., spO2) and digital storage media; The device may also include a data connection 47, a power connection 49, and an on / off switch 51. The inlet grille 44-I is preferably located on the rear surface of the housing. Provides an air inlet for the operation of internal components (e.g., blower motor and CPU) The movement of heated air across the internal components allows for the dissipation of heat generated by the The cooling fan 68 is driven by the cooling fan 68 inside the housing. is located near the hot air outlet grill 44-O (shown on the bottom of the housing in Figure 4). In addition, an oxygen (O2) inlet port 46 is provided which can be connected to an oxygen source. is preferably disposed on the rear surface of the housing.

[0035] Figure 4 shows the bottom of the ventilator housing. A removable exhalation cover 48 provides access to the exhalation section or area of ​​the housing. By removing the exhalation cover 48, the inserted This allows access to the exhalation routing module and the exhalation inlet port 14. In addition, by removing the exhalation cover 48, an exhalation valve or an exhalation adapter can be removed. The routing module can be easily removed or replaced. To reduce excessive play, the housing is locked by a finger-rotatable latch dial 50L. Optionally, in some embodiments, a latch dial The latch may be adapted to lock the latch from being released. The exhalation cover is released by operating the release button 50R. The latch of the expiratory cover 48 is released by pressing the release button 50R. Those skilled in the art will understand how to removably fasten and connect the exhalation cover 48 to the housing. It will be appreciated that alternative methods of connecting the ventilator housing may be utilized. The bottom side has a removable battery cover 52 for a replaceable battery and an oxygen sensor. The oxygen sensor cover 54 is removable to provide access to the oxygen sensor 64. That's fine.

[0036] FIG. 5a is organized according to the schematic diagram of the interior of the housing 12 shown in FIG. FIG. 8 shows the structure of the chassis 21 when the ventilator is installed in the casing. 8 and 5a. The interior of the housing may have one or more partitions or walls that define various compartments. These compartments are functionally separated areas, e.g., intake or Provides separate zones for sections that function as expiratory chambers, oxygen sensor compartments, etc. This specialization of components into distinct areas allows for easy assembly and maintenance of the device. This simplifies the process and allows access to some components when access to other components is required. Components can be isolated so as to be constrained when necessary.

[0037] For example, one or more blowers may be provided to provide therapeutic pressure (not shown in FIG. 5a). The tubes and air passages of the pneumatic block module 56 are located within the housing (see FIG. 5a). The pneumatic block can be easily removed and replaced from its mounting seat 58 (shown). The pneumatic block module 56 is located within the chassis 21 assembly. and / or acoustic vibrations. To reduce the shock, it is arranged on a shock absorber or elastic support. The walls of the sheet conform to the shape of the periphery of the pneumatic block within that particular assembly position. In this case, the book is aligned with the block and supports the book. As shown, the air pressure block module has its air passages connected to the filter at the air inlet 34. Assembly 36, intake outlet port 16, and oxygen supply path 43. The arrows indicate the path of airflow 35 and oxygen flow 45 through the ventilator 10. The air flow 35 enters through the air inlet 34 and passes through the filter assembly 3. 6 and through the inlet seal 38 into the inlet muffler 39 of the pneumatic block module 56 Optionally, an oxygen source may be attached to oxygen inlet port 46, in which case In this case, the oxygen flow 45 passes through the oxygen supply path 43 and the oxygen seal to the pneumatic block module. The air pressure is introduced into the inlet muffler 39 of the air pressure block module 56. The air flow 35 is combined with the air flow 35. Flow 35 is pressurized by main blower 104, as described in more detail below. The pressurized air / oxygen streams 35, 45 pass through the outlet muffler 84 and the primary seal 122. The air is led from the air pressure block module 56 into the intake section 33 through the intake outlet port. The air flows out of the outlet 16, through an air delivery conduit (not shown), and into the patient interface (not shown). The document will be delivered to the address specified in the notice (without the date of delivery).

[0038] An oxygen sensor 64 located in the oxygen sensor compartment of the intake section 33 measures the oxygen delivered to the patient. The oxygen sensor 64 is mounted on the intake outlet so that it can be easily replaced. The oxygen supply may be mounted within the housing 12 adjacent the oxygen supply port 16. The oxygen sensor detects the oxygen level in the air being delivered to the patient. Data from the oxygen concentration monitor is used to trigger alarms and for user interface purposes. Used to send oxygen concentration to a microprocessor for display on the face. The amount of oxygen delivered can be determined by adjusting the amount of oxygen delivered to the patient with a known amount of air. However, the oxygen sensor may optionally be It may also be used to regulate the amount of supplemental oxygen delivered through the oral port 46 .

[0039] An oxygen sensor cover 54 (shown in FIG. 4) on the bottom of the housing It is removable to access the oxygen sensor housed within the oxygen sensor compartment. The oxygen sensor fits into a mount in the housing adjacent to the intake outlet port 16. A portion of the air flowing through the intake outlet port 16 is detected by an oxygen sensor. The sensor generates a data signal that indicates the oxygen level of the gas. The data is transmitted by wire to the data connection, from where it is transmitted to the processor. The processor analyzes the data and determines the amount of oxygen added to the air being pumped to the patient. This will determine the amount of supplemental oxygen added.

[0040] The oxygen source may be a low pressure oxygen source or a high pressure oxygen source. If supplied from a high pressure oxygen source, the pressure of the high pressure oxygen source is reduced before the oxygen enters the inlet muffler 39. To prevent this, an oxygen regulator (not shown) may be disposed in the oxygen supply path 43. The port 46 may be configured to comply with various jurisdictional standards, including, but not limited to, bore index. Disposal Safety System (DISS) Standard, Sleeve Index System (SIS) Standard, U.S. Used in National Institute of Standards and Technology (NIST) and French Standards Association (AFNOR) standards Connects to a variety of different oxygen connection adapters to allow connection to various types of oxygen connectors It is configured so that

[0041] In an alternative configuration (not shown), the high pressure oxygen source may be located after the main blower 104, e.g., at the outlet manifold. The compressed air is mixed with the compressed air source in the outlet muffler 84. In some embodiments, the hyperbaric oxygen may be pressurized relative to the gas flow to the patient. It may be used to provide a source.

[0042] The pneumatic block module 56 is shown schematically as a rectangular shape, but is not limited to a housing the seat in the housing and the pneumatic block module 56 is improperly inserted into the housing. It may have any shape that minimizes the possibility of cracks, for example an asymmetric shape.

[0043] The main printed circuit board (PCB) or PCB 86 (shown in FIG. 8) is mounted on the chassis 21 and is disposed between the chassis 21 and the lower housing case 22. The main board electronic components are the processor, power, and data signals. Electrical connectors for transmitting pressurized air from the pneumatic block module 56 and the air intake and output Included is a data connector for the blower that feeds the outlet port 16. In this regard, the electrical connector The actuator connects the electronics on the PCB of the pneumatic block module 56 with the power supply on the main PCB inside the housing. The main board provides power and signal paths between the main board and the sub-components. The system may also include data and power connectors for any sensor, such as an oxygen sensor. Electronic components within the housing generate images for the display device and, for example, an audible alarm. 61 for controlling the generation of an acoustic signal for a speaker 61 for detecting the pressure sensor and the oxygen sensor The rotation speed of the blower may be controlled by detecting a signal from the blower.

[0044] As previously mentioned, the chassis 21 includes a pneumatic block module 56 that fits around the pneumatic block module 56. Preferably, the chassis 21 includes a block mounting seat 58. The chassis 21 is A filter sheet (shown as inlet filter support 176) for the bridge 36 and and / or filter compartment, and low pressure oxygen connection assembly, cooling fan 68, and Another mounting sheet for the deformable exhalation seal 70 is described in more detail with reference to FIG. The chassis 21 may also have, for example, empty spaces between sections or compartments of the chassis. There are also buried or integral air passages and ports molded into the chassis structure to deliver air. For example, air under a known pressure is pumped through a passage in the chassis to create a pneumatic blower. It is recommended that the PEEP air supply be led from the air supply module to the PEEP air supply.

[0045] [Filter Assembly 36] FIG. 9a is a perspective view of the filter assembly 36, and FIGS. 9b and 9c are perspective views of the filter assembly 36, respectively. 1A and 1B are front and rear views of the filter assembly 36. is configured to receive an inlet filter 37 (see FIG. 10a) As shown in FIG. 9b, the air inlet for the ventilator 10 is A port 34 is formed in the front exterior surface of the inlet filter housing 32. The air inlet 34 is A grill or grate configured to prevent large particles from entering the filter assembly 36. Preferably, the grille 74 substantially prevents water from entering the ventilator. The downward slope of the grate helps to direct water away from the , and does not enter the inlet filter assembly 36. It also prevents insertion of the body or fingers into the filter assembly 36 .

[0046] A housing protrusion 76 extends from the outer surface of the air inlet 34 to prevent an object from passing through the air inlet 34. The opposing surface of the housing projection 76 is configured to prevent complete blockage. A cone 76a (shown in FIG. 9c) is formed within the outer housing cover 32C. The cone 76a is configured to receive a corresponding filter projection 92. A collar 72 surrounds the air inlet 34. This collar 72 is described in more detail below. a locking mechanism that secures the filter assembly 36 to the ventilator housing 12 so as to , for example, those which provide a bayonet mechanism, a threaded mechanism, or a screw-on mechanism.

[0047] Inlet filter housing 32 is configured to receive an inlet filter 37. The cylindrical portion 82 is preferably formed as a cylindrical portion 82. The cylindrical portion 82 is preferably formed as a cylindrical portion 82 having a length of 1 / 4 inch. about 20 to 60 mm, more preferably about 30 to 40 mm, for example, about 34 mm , 35 mm, or 36 mm. This provides a sound deadening function that reduces noise transmitted back into the inlet. The length is preferably about 30 to 100 mm, more preferably 50 to 80 mm, or 60 to 70 mm, for example, 60 mm, 61 mm, 62 mm, or 64 mm. It should be understood that cylindrical portion 82 may be formed having other dimensions.

[0048] 10a-10d show an inlet filter 37 according to an exemplary embodiment. The port filter 37 comprises a filter cage 88 with a porous filter material 90 connected thereto. The filter cage 88 provides structural support for the filter material 90. The inlet filter 37 is a filter having a distal end 88t and a proximal end 88b. It provides a relatively small opening for incoming air on the exterior of the aspirator housing and also provides a filtering area. To maximize the filter capacity, the filter material 90 may have a truncated cone shape. By overmolding the filter cage 88 onto the filter material, However, the filter material 90 may be fixed to the filter cage 88. Other methods of coupling or fastening to 88 may be implemented.

[0049] Optionally, a pleated or non-pleated porous filter material 90 is provided in the inlet of a frusto-conical shape. The filter material 90 may be adapted to form the sidewalls of the filter 37. The ambient air flowing through the port 34 is filtered, allowing the air to pass through the ventilator 10 and then into the patient. Filter materials remove dust and other particles from the air before it is pumped into the optionally cut off at least 10 μm, e.g., 8 μm, 7 μm, or 6 μm. The inlet filter 3 has a filter material 90 and a filtration cutoff level. The part 7 is preferably about 10 to 30 mm, more preferably about 10 to 30 mm, at the tip 88t of the inlet filter. More preferably, the diameter is 15 to 20 mm, for example, 17 to 19 mm, and the inlet At the wider proximal end 88b of the filter, the diameter is about 20 to 55 mm, more preferably about 25 It has a diameter of ∼35 mm, for example, about 30 mm, 31 mm, or 32 mm.

[0050] To incorporate the filter assembly 36, the inlet filter 37 is It may be inserted into the open or inner end of the cylindrical portion 82 of the housing 32 and provided with an interference fit. A filter flange 94 at the proximal end 88b of the port filter 37 provides accuracy of insertion. The inner end of the cylindrical portion 82 is provided with a stopper for the outer rim of the open end or inner end of the cylindrical portion 82 to prevent the insertion of the To properly align the inlet filter 37 within the inlet filter housing 32, The filter protrusion 92 at the tip 88t of the nozzle filter 37 is inserted into the filter housing cover 3 It is adapted to fit within a cone 76a in 2C.

[0051] The filter cage 88 and inlet filter housing 32 are made of polycarbonate or The material is made of a plastic material such as polypropylene and is formed by molding. The filter material 90 may be any allergy-free air filtering material, e.g., a sewn-in filter. Optionally, the filter material is a thermally bonded polyester fiber. For example, it may be foam, paper, polyester, woven fabric, nonwoven fabric, pleated fabric, or non-pleated fabric. .

[0052] As shown in Figures 11a and 11b, the filter assembly 36 includes an inlet filter. To allow for easy replacement and inspection of the filter 37, the housing of the ventilator 10 12 is configured to be removably inserted into the intake compartment of the chassis 21. Thus, the filter assembly 36 is inserted into and attached to the filter compartment FC of the chassis. The collar 72 of the inlet filter housing 32 is preferably removable. 80 to engage the rear surface of the housing 12. The inlet opening 80 on the rear of the ventilator may be provided with one or more corresponding recesses or slots 80. a, into which one or more pins or recesses of the cover engage. Other methods such as threaded fasteners, screws, snap locks, etc. The removable fastening mechanism attaches the filter assembly 36 to the ventilator housing 12. It may also be used to releasably connect.

[0053] To insert and secure the filter assembly 36 into the ventilator housing 12: The filter assembly 36 is inserted into an inlet opening 80 in the ventilator housing 12. The collar 72 is then rotated, preferably by hand, to rotate the filter assembly. Engage the protrusion / pin 78 of the sleeve 36 into the recess or slot 80a in the ventilator housing 12, As shown in Figures 11a and 11b, the filter assembly 36 is The filter assembly 36 can be securely locked to the housing 12. sealingly engages the inlet seal 38 in the vessel 10, thereby forming an airtight radial seal. The inlet filter 37 is provided at its proximal end to facilitate engagement with the inlet seal 38. The inlet seal 38 provides an inlet taper at 88b. This restricts the air path within the respirator, ensuring that it does not contaminate the rest of the chassis.

[0054] To remove the filter assembly 36, rotate the collar 72 in the opposite direction to remove the lug or Alternatively, the pin 78 may be removed from the slot 80a, thereby allowing the filter assembly 36 to be manually removed. It may be pulled out of the filter compartment of the respirator housing 12. In this way, e.g. For multiple patient use, the entire filter assembly 36 can be replaced and the inlet air Alternatively, only the inlet filter 37 can be replaced if necessary. May be replaced for respirator cleaning or maintenance.

[0055] [Pneumatic Block Module 56] As shown in Figures 13, 14 and 15, the pneumatic block module 56 includes: A thermally conductive material that provides good heat transfer, preferably with a substantially rigid outer casing. For example, the pneumatic block module 56 may be made of an aluminum alloy. , magnesium, or other suitable for providing structural support housing for the module. The outer casing may be made of a material with good thermal conductivity. The housing may be made of a metal such as aluminum. , formed of three parts, specifically, a main chassis 184, a bottom cover 186, and a top cover 182. The rigid outer casing is preferably a protective barrier against the air flow of the pneumatic block module 56. Provides a structural housing for the ducts or passages, blowers, electronics, and other components. The seal is connected to one or more casing sections, thereby preventing the pneumatic blockage. A pneumatic seal is formed around the periphery of the bottom cover 18. 6 may have a silicone seal overmolded along its periphery. The pneumatic block module contains a substantial portion of the air passages within the ventilator 10. , it may be replaced to facilitate inspection.

[0056] 12 is a schematic diagram of the internal components of the pneumatic block module 56. The module 56 includes a main blower 104 with a volute assembly 108, an inlet check valve assembly 109, and a Assembly 114, optional oxygen inlet port 144, positive end-expiratory pressure (PEEP) blower or PEEP blower 124, outlet muffler 84, safety valve 85, pressure sensor 128, flow The flow sensor 130 and flow element 132, and the PEEP pressure sensor 142 are included. The volute assembly 108 forms the majority of the air path and is connected to the pneumatic block module 5. It plays a key role in the 6.

[0057] The side walls of the main chassis 184 have openings for wires for electrical connections, expiratory pressure or PEEP pressure controls. It has an opening for the tube 188 and an opening for the air passage associated with the oxygen supply. shielding the wire from potentially sharp edges of metal openings and providing a shield between the inside and outside of the main chassis 184. A deformable plastic grommet fits into the opening in the casing side wall to provide a Preferably, the connectors are configured to fit together.

[0058] Figure 13 shows an exploded view of the pneumatic block module 56 and its components. The lid 186 is sealingly connected to the main chassis 184, thereby forming a pneumatic block module. The main chassis 184 forms the lower outer surface of the solenoid valve interface. The solenoid valve interface 118 is connected to the pressure relief solenoid valve 116 and the flow The valves 116 and 120 are connected to a check valve assembly. and configured to communicate with and control the check valve assembly 114. .

[0059] The main seal 122 (shown in FIG. 16) is connected to the main chassis 184. The main seal 122 includes a surface 190. The surface 190 is a surface from which the main blower 104 is suspended. and vibration isolation, and the main chassis 184 and volute assembly 108 (upper volute) The volute 110 and the lower volute 112 are joined to form a number of seals. A seal slit 195 may be provided in the surface 190. The slit 195 connects the volute assembly 108, the pneumatic block main chassis 184, and To accommodate tolerance variations between the seal and the primary seal 122 and to prevent deformation of the seal area. The seals 198 and 192 work together to ensure that the main blower The airflow 35 is designed to seal between the low pressure inlet side of the fan and the high pressure outlet side of the main blower. and (if oxygen stream 45 is present) the oxygen stream 45 is mixed on the low pressure inlet side. A sealed inlet space is formed between the main seal and the seal on the bottom cover 186. As shown in Figures 16a and 16b, the primary seal 122 is A safety feature, i.e., a seal 192, is used to separate the safety valve 85 from the opening in the bottom or lower cap 186. a feature that provides a relief valve to atmosphere sealing interface between the relief valve and the bore; Features that provide a volute outlet seal interface 194 to the volute outlet 134 The main seal 122 may also be configured to provide one or more of the following: The volute assembly may include a grommet 196. The volute grommet 196 is 108 and connected to the rear volute support 152 on the bridge 108, and The volute is configured to assist in supporting the volute.

[0060] The check valve assembly 114 is a thin film NR valve held in the NRV space using a clamp ring. A check valve assembly 114 controls the level of flow at the blower inlet. In order to achieve this, the lower volute 112 is incorporated and is adjacent to the main blower 104 on the inlet side. An example of a check valve is the same as that of the jointly-owned As set forth in the currently pending PCT application no. PCT / AU2011 / 000341 and a check valve system, the entire contents of which are incorporated herein by reference. shall be included herein.

[0061] The main blower 104 is held and sealed by a volute assembly. Any type of blower that provides the pressure and flow required for ventilation, e.g., a single-stage blower Alternatively, a multi-stage blower may be used. Application number: PCT / EP2010 / 066498 (International Patent Application Publication No. 2011 / 0514 A blower such as that described in U.S. Pat. No. 62, incorporated herein by reference, may be used. The entire contents of the present application are incorporated herein by reference. and / or a blower suspension 106 above the main blower to support the main blower 104. The blower suspension 106 facilitates heat transfer from the main blower to the top cover 182. The blower suspension can also function as a heat sink to facilitate The top cover 182 is preferably made of a thermal elastomer. To facilitate dissipation, it may be made of a thermally conductive material.

[0062] The PEEP blower 124 includes a PEEP impeller 127 and a PEEP volute 125. and disposed in the expiratory section 31 compartment (see Figures 21 and 22 for further details). 200 (described in detail) to provide a pressure source during exhalation, if necessary. The PEEP blower 124 is supported by a PEEP suspension 126. The PEEP suspension provides vibration isolation and cooling around the PEEP blower 124. For example, the PEEP suspension 124 may be made of a compliant material to provide protection. , silicone, preferably molded silicone. The solenoid valve 140 controls the pressure supply from the PEEP blower 124 to the expiratory section 31. The PEEP pressure tube 188 is connected to the expiratory section 31 to provide a PEEP pressure source. A connection is provided between the PEEP solenoid valve 140 and the PEEP supply port 172 (shown in FIG. 5a). It is connected.

[0063] A sensor signal, e.g., a pressure signal, and / or a pressure signal, of the gas flow exiting the volute outlet 134 or a pressure sensor and / or a flow sensor to provide a sensor signal such as a flow signal. A sensor PCB 166 having a sensor such as a sensor seal 136 It is connected to the upper volute 110 via the

[0064] As shown in Figures 14 and 15, the volute assemblies 108 are connected to one another. One or more molded components, such as an upper volute 110 portion and a lower The volute assembly 108 may be assembled from the volute 112 portion. To facilitate assembly of the various pneumatic connections required within the pneumatic block module 56. As can be seen from the top view, the volume The volute includes a main blower volute 158 adapted to receive the main blower 104. This provides a volute area around the main blower 104 (not shown) and It provides a main air path between the fan 104 and the volute outlet 134. The port includes a PEEP blower support 162, a PEEP solenoid valve support 160, and a pressure sensor port. The valve may also include a flow sensor port 154, a flow sensor port 156, and a volute outlet 134. The volute outlet 134 facilitates measurement of the flow exiting the volute assembly 108. To achieve this, a flow element 132 (not shown in FIG. 14) may be provided. The flow element 132 is configured to flow through it in order to measure the differential pressure across the flow element 132. do.

[0065] As shown in FIG. 15, the volute is connected to a check valve assembly (not shown in FIG. 15). It also includes a check valve (NRV) chamber 146 adapted to receive the assembly 114. The NRV pressure connector tube 148 transmits pressure to the NRV chamber 146. The outlet muffler 84 and the safety valve support 150 are also configured to be mounted within the volute. It is preferable that the structure be formed as follows.

[0066] The volute assembly 108 is supported by supports such as the rear volute support 152. , which is built into the chassis of the pneumatic block module 56. The sensor PCB 166 is , coupled to the volute assembly 108 via one or more PCB screw bosses 164 It is good.

[0067] Air flows from the inlet muffler through the NRV chamber 146 into the volute assembly 108. The flow passes through the NRV membrane (labeled "NRVM" in FIG. 13) and After the main blower, the air flows downward along the volute and The safety valve 85 is inserted into the outlet muffler 84. The air then passes through the flow element 132 and exits the volute. It flows out of the opening 134.

[0068] 17a-17c show an embodiment of the sensor seal 136. The valve 136 connects components on the volute assembly 108, such as the sensor port and The sensor is connected between the solenoid valve port and the sensor PCB 166. The sensor seal 136 is configured to be coupled to an additional seal such as silicone. The PEEP blower 124 is made of a suitable material, and the PEEP solenoid valve 140 is made of a suitable material. , a sealed connection between the sensor on the PCB and the components on the volute assembly 108 The sensor seal 136 secures the sensor PCB 166 to the volute assembly. The sensor seal 136 may also function to attach to the sensor block 108. The sensor PCB 166 may be protected from shock and vibration.

[0069] Sensor PCB166 with multiple sensors and sensor PCB166 with multiple port seals By fitting seal 136, the air in the pressure sensor and volute assembly The connection between the passage and the sensor PCB is quickly and reliably formed. 166 and the placement of the pressure sensor thereon, which requires a unique attachment to the sensor seal 136. position, which allows the pressure sensor to access the air passages within the volute assembly 108. This minimizes the risk of an inappropriate connection to the

[0070] The sensor seal 136 has a first side 136a shown in FIG. One side 136a has a pressure sensor port 154, a flow sensor port 156, and a volume sensor port 158. 1. The valve 140 is configured to engage the PEEP solenoid valve 140 in the PEEP solenoid valve support 160 on the chute. As shown in FIG. 17c, the second side 136b is formed from the sensor PCB 1. 66. The first side 136a is configured to engage a sensor disposed on the first side 136a. Two flow element bypass ports 214, i.e., flow sensor port 1 on the volute 56. The first part of the sensor seal 136 On the second side 136b, two flow element bypass ports 214 are connected to the sensor PCB 1. 66 to measure the bypass flow of the outlet gas flow; It is possible to obtain a flow signal of the outlet gas flow.

[0071] The first side 136a also includes an outlet pressure port 210 and an inspiratory / expiratory pressure port 204. These ports 210 and 204 are connected to the pressure sensor port 154 in the volute. The second side 136b is connected to the outlet pressure sensor seal 206 and the inspiratory / expiratory pressure sensor seal 208. The pressure sensor seal 212 is provided. These ports 206, 212 are connected to the sensor P Pneumatically coupled to the outlet pressure sensor and inspiratory / expiratory pressure sensors located on the CB166 This allows pressure measurements of the outlet gas flow and the expiratory flow, respectively. The sensor PCB is attached to the volute assembly by fasteners, e.g., screws. The sensor 104 may be fixed to the assembly 108 .

[0072] A PEEP solenoid valve port 216 is also located on the first side 136a of the sensor seal 136. The PEEP solenoid valve 14 is located in the PEEP solenoid valve support 160 on the volute. The second side 136b of the sensor seal is configured to engage with the PEEP A PEEP pressure port 208 is configured to be connected to the outlet of the blower 124. whereby, in use, the PEEP pressure port 208 is used to control the exhalation valve 200. The PEEP solenoid valve 140 is configured to supply a PEEP pressure for the PEEP control.

[0073] Most of the air passages and pneumatic connections are located within the outer casing of the pneumatic block module 56. This minimizes the number of air tubes exposed outside the casing. By housing the pneumatic connections inside the casing, leakage due to tubing separation is prevented. This reduces the risk of accidental contact with the air passage or accidental connection to the air passage. In addition, by accommodating the pneumatic connections within the casing of the pneumatic block, This reduces the complexity of the components. In particular, some of the complexity of the pneumatic connections is reduced to the pneumatic It may be constrained to the block module 56 .

[0074] To replace the entire air passageway within the ventilator 10, the filter assembly 36, The mouth seal 38, the pneumatic block module 56, the inhalation outlet port 16, and the exhalation section 31 Detaching and / or extracting components from the housing and then replacing them The expiratory section 31 includes the following components: an expiratory valve 200, an expiratory adapter 2 02, one or more of the expiratory seal 70, the sensor filter, and the flow element are replaced. It is recommended to disconnect and reconnect multiple tubes that make up the pneumatic connections within the ventilator. This is because most of these pneumatic connections are made with replaceable pneumatic block modules. To replace the air passage, a new filter The assembly 36 is inserted into the inlet filter support 176 and the new inlet seal 38 will be connected to the inlet seal support 178. New Pneumatic Block Module 5 6 is attached to the housing 12 and is connected to the inlet seal 38 of the pneumatic block module inlet. and connected to a new intake outlet port 16 at the outlet of the pneumatic block module. The new exhalation seal 70 (described with reference to FIG. 18) and the sensor film A filter, flow element, and an exhalation valve 200 or an exhalation adapter 202 are disposed within the exhalation section 31. Some air passage connections are inserted into the housing. The module is then inserted into the housing. Relatively few additional air passage connections need to be made after placement. For example, the PEEP pressure tube 188 is attached to the expiratory section 31. By integrating the air passage into the lock module, it is possible to The complex incorporation of tubes and other air passages can be avoided.

[0075] [Expiratory section 31] The expiratory section 31 is configured to receive the patient's exhaled breath 55. This expiratory section is removable. Possible exhalation interface modules, such as exhalation valves 200 or various purpose As a compartment for receiving an exhalation adapter 202 which functions to route the exhaled air. As described above, the chassis 21 may be configured to accommodate the sensor filter and the It has several interfaces to accept airflow sensors. The exhalation cover 48 for the chair module compartment is a separable part of the housing 12. The exhalation cover 48 may be provided with a release button 50R and a latch dial 50L ( (See Figure 4.) The latch dial 50L is operated by hand to allow the cover to be removed from the housing. After the expiratory cover 48 is removed, the expiratory interface module The expiratory section 31 can be lifted out of the housing. The compartment may be configured to receive an exhalation seal 70 that conforms to the shape of the interior surface of the compartment. The seal is designed to hold and seal the expiratory sensor filter and expiratory flow sensor. and an exhalation routing module (e.g., an exhalation adapter and an exhalation and an air port connected to an air passage in the housing 12. The exhalation seal 70 is deformable and may be attached to the exhalation interface module. provides structural support to the module, protects it from shock and vibration, and to help minimize the ingress of dust and contaminants into the sensors and ports of the It would be good if this were the case.

[0076] 18a and 18b show an exemplary exhalation seal 70. The exhalation seal 70 , configured to be inserted into the compartment of the expiratory section 31, and the chassis of the housing 12. to form a sealed contact surface between the gas port interface and the expiratory gas routing module. In this example, the gas routing module is inserted into the expiratory section 31 and to form a tight interference fit against the seal and gas port interface. An optional tab 218 may be provided on the expiratory seal 70. The tab 218 can be pulled to remove the exhalation seal 70. This is to facilitate removal of the exhalation seal 70. Preferably, the exhalation seal 70 is , irregular or idiosyncratic to facilitate proper alignment for insertion into expiratory portion 31. Optionally, an exhalation interface module (e.g., an exhalation valve) 200 or expiratory adapter 202), to form alignment features for insertion of An opening 226 is formed in the expiratory section 31 between the expiratory seal 70 and the chassis 21. It's good to have one.

[0077] The expiratory seal 70 has a plurality of sealed air pressure passages, e.g., a PEEP supply passage 220, an expiratory Preferably, there is a barometric pressure sensor passage 222 and a pair of expiratory flow sensor passages 224. The PEEP supply passage 220 is connected to a PEEP supply port formed in the expiratory portion 31 of the chassis 21. 172 and an exhalation interface module (e.g., an exhalation valve 200 or an exhalation adapter The PEEP supply port is configured to connect to the expiratory supply port on the ventilator. The passageway provides a path for PEEP gas flow. The module is seated on the exhalation seal 70 in a uniquely aligned position. Ensure that the air passages in the valve are properly aligned with the air passages, sensors, and filters in the ventilator. It will be matched.

[0078] The sensor filters for the expiratory flow and pressure sensors are located in the expiratory compartment of the chassis. In this regard, the expiratory flow sensor interface 170 and the The sensor filter interface 168 in the si 21 is shown in Figure 5a. A seal 70 seats over the flow sensor and sensor filter. The expiratory pressure sensor passage 222 is connected to the sensor filter and the expiratory interface module. A passage is formed between the pressure port on the top. The sensor passage 222 bypasses the flow element located within the expiratory interface module. A pair of expiratory flow sensor passages 224 are provided for providing a flow sensor and The passage is connected between the flow port on the expiratory interface module. 222, 224 are air in the exhalation interface module (e.g., exhalation valve 200). This provides a conduit connecting the passageway to the sensor within the housing 12 .

[0079] 19a-19d and 20a-20c show a tubular exhalation device seated on an exhalation seal in the exhalation compartment. 1 shows an exemplary exhalation valve 200 configured as an exhalation interface module. 21a-21d and 22a-22c show the structure of the exhalation seal seated in the exhalation compartment. 2 shows an exemplary expiratory adapter 202 alternatively adapted to be

[0080] The exhalation valve 200 shown in Figures 19a-19d is connected to an air delivery conduit that receives the patient's exhaled breath. The exhaled air may be provided with an exhalation inlet 238 adapted to be connected to a ventilator (not shown). The air passes through the exhalation valve 200 and flows out into the atmosphere via the exhalation outlet port 240. The exhalation valve 200 is positioned and held accurately relative to the exhalation seal 70. The mounting bracket may include at least one alignment tab 228 to assist in securing the mounting bracket. 228 is a part of the chassis 21 and the exhalation seal 7 when the exhalation seal is inserted into the chassis 21. 0. The casing 222 may be adapted to be received within an opening 226 formed between the casing 222 and the casing 222.

[0081] The exhalation valve 200 includes a PEEP pressure port 232, a pressure sensor port 234, and a pair of These ports are connected to the exhalation valve 200 when the exhalation valve 200 is in the exhalation seal. When seated on the seal 70, the PEEP supply passage 220 in the seal 70, the expiratory pressure sensor - passage and expiratory flow sensor passage. 236 is in the expiratory inlet 238 (between a pair of flow sensor ports 230 in the expiratory valve The flow sensor port 230 may be located in a location in the expiratory flow path or passageway. The flow sensor can detect the flow rate of the patient's exhaled breath. The pressure sensor port 234 connected to the internal passage of the air valve allows the pressure sensor to measure the exhaled air pressure. The PEEP pressure port 232 is connected to the PEEP blower 124. configured to receive a supply of pressurized gas from the exhalation valve and deliver the gas into the exhalation valve, The gas flow is used to activate the PE gas located within the removable valve cap 242 of the exhalation valve 200. It is designed to control the operation of the EP thin film.

[0082] The exhalation valve 200 is configured so that the ventilator functions as a dual limb ventilation system, i.e. When inserted into the expiratory compartment, separate inspiratory and expiratory delivery conduits are used. Here, the inspiratory supply generated by the ventilator 10 is connected to the inspiratory outlet port 16. The patient's exhalation is delivered to the patient interface device via an inspiratory conduit. The air is delivered back to the expiratory section 31 of the ventilator 10 via the expiratory conduit. The air valve 200, in conjunction with the PEEP blower 124, regulates the positive end-expiratory pressure during exhalation. It is adapted to.

[0083] 20a-20c show the insertion and an exhalation cover 48 for retaining the exhalation valve 200 within the exhalation section 31 compartment of the ventilator 10; It shows an insertion.

[0084] 21a-21d show a ventilator 10 fitted over an expiratory seal 70 in the expiratory section 31 compartment. 1 shows an embodiment of an expiratory adapter 202 configured to be seated. Although partially serving different gas routing purposes, To facilitate insertion into the seal, an interface configuration complementary to that of the exhalation valve 200 is provided. The expiratory adapter 202 has an interface configuration. To help properly align and retain the exhalation seal 70, at least The exhalation seal may also include another alignment tab 228. The alignment tab 228 may be When inserted into the chassis 21, an opening is formed between the chassis 21 and the exhalation seal 70. Preferably, it is adapted to be received within the mouth 226 .

[0085] The expiratory adapter 202, like the expiratory valve 200, has a PEEP pressure port 232 and a pressure The expiratory adapter, however, is equipped with a sensor port 234. It does not have a PEEP membrane for preventing the exhalation of air from entering the ventilator, because this is located on the proximal exhalation valve (not shown). The PEEP pressure port 232 is connected to the adapter PEEP control port The PEEP pressure is supplied from the PEEP blower 124 to the proximal exhalation point via a tube connected to the 246. The exhaled air pressure is measured via another small tube connection. This is done by delivering exhaled air into the adapter pressure inlet port 244. The expiratory pressure inlet port 244 is connected to the expiratory adapter 202 and is connected to a pressure sensor The exhaled air is delivered to a pressure sensor port 234 for measuring the pressure by There are.

[0086] In this embodiment, there is no expiratory flow through the flow element in the expiratory adapter. Therefore, port 248 is a vacant port (e.g., These ports 248 may be connected to the expiratory adapter 202. It is used to help align and hold the exhalation seal 70 in a sealing position. It would be good if you could do this.

[0087] By inserting the expiratory adapter into the expiratory compartment, the ventilator becomes a single device with a proximal expiratory valve. It can function as a single limb ventilation system. In such a system, the exhalation valve In the same manner as previously described, an inhalation gas conduit is connected to the inhalation outlet port 16. However, there is no expiratory gas conduit because the proximal expiratory valve is connected proximally to the patient. The proximal exhalation valve releases the majority of the exhaled air 55 proximal to the patient. It has become possible to do so.

[0088] As will be described with respect to Figures 23-30, the pneumatic coupler 2300 is used to connect the exhalation as a removable connection for the port on the adapter 202 and for the patient circuit or patient interface Preferably, the card is adapted to act as a conduit for the interface. The puller must be single-ended to avoid an inaccurate connection between the port and the patient circuit conduit. The adapter 202 is configured to have a structure that securely couples to multiple ports on the adapter 202 only. It would be good if this was the case.

[0089] For example, as shown, coupler 2300 includes a ventilator connection end 2301 and a and a patient circuit end 2303. 1 may include first and second port connectors 2302-1, 2302-2. This allows, for example, a single patient circuit to the proximal valve with a pneumatic interface to the ventilator. These ports can function as interfaces for the first and second gas passages. The first port of the coupler 2300 is provided with 2302-1-GC and 2302-2-GC. The inlet connector 2302-1 is connected to the adapter pressure inlet port 244 of the expiratory adapter 202. The port is preferably configured to connect only the pressure sensor to the patient. The second port connector 2302-2 of the coupler 2300 is for connecting the exhalation adapter The PEEP control port 246 of the pump may be configured to be connected only to the pump. This port is for controlling PEEP pressure. Such a connection between the ventilator connection end 2301 and the expiratory adapter 202 of the ventilator 10 may be, for example, an interference fit in the port.

[0090] The coupler has a mating link to facilitate proper alignment of the port and port connector. The substrate may also include an alignment ridge such as ridge 2304. In this regard, the alignment ridge may be ventilator structure, e.g., by an interference fit, to the receiving end of the ventilator housing. The combined structure may be configured to be inserted into the receiving passage RC. For example, the connecting ring 2304 may be configured to allow insertion of only 22C) and is dimensioned to be inserted into the receiving passage RC of the expiratory portion 31. Such insertion should be performed by the port and port connector. In this regard, the first port connector is , which may itself be cylindrical, and the inside of the connecting ring (best shown in Figure 26) Preferably, the cylindrical space 2344 is disposed within a larger perimeter portion of the cylindrical space 2344, as shown. It is preferable that the connecting ring is offset from the center (i.e., offset from the central axis of the cylindrical space) so that the In this embodiment, the inner cylindrical space 2344 itself is Not functioning as a passage or gas path for system pressure or gas. The connector may also be cylindrical and may be located outside the periphery of the connecting ring or outside the cylindrical space. In this manner, a single coupler for multiple conduits may be used for multiple (e.g., two or more) To ensure proper connection of only one port, the It is advisable to configure it as follows.

[0091] The patient circuit end 2303 of the coupler is connected to a mating conduit in the appropriate orientation, e.g., the patient I / O The patient circuit may include flexible tubing including an interface (not shown). In the illustrated embodiment, these conduits may be joined to couplers, or may be integrally formed with the coupler. One or more of these tubes may be connected to the proximal valve. (not shown). Such a tube may be connected to or For example, pneumatic conduits for patient pressure signals (from a patient mask (not shown) and from the ventilator This provides a pneumatic conduit for pneumatic control pressure from the valve to the proximal valve. In an embodiment, the exhalation conduit 2306 is connected to the first port gas passage 2302-1-G of the coupler. C to the adapter pressure inlet port 244, which is connected to the PEEP control conduit 230 8 connects the PEEP control port through the second port gas passage 2302-2-GC of the coupler. As shown, the coupler has ports 246 with each port connection of the same size. The first connector may have a shape and function as a bi-connector. The two contact points of the port connector 2302-1 and the second port connector 2302-2 The diameter and shape may be the same. For example, both port connectors may have the same cylindrical shape. The connector and gas passage dimensions may be the same. The structural configuration of the coupler as a whole determines which port connector corresponds to which port of the expiratory adapter. This prevents any confusion as to which port is connected to which conduit. At the opposite ends of the 6, a patient interface and a proximal valve are connected to the conduits 2308, 2309. 06, if the conduit is not integral with or joined to the (in the aligned orientation) to properly connect to the patient interface and proximal valve ports. To ensure this, a multiport coupler design is implemented at the opposite ends. Good too.

[0092] Generally, the coupler 2300 may be formed from an elastomeric material. The toner material can promote a sealed connection to the ventilator and expiratory adapter. The connectors are designed to minimize obstruction to the mated assemblies. The ventilator housing may be designed to match the shape and form of the ventilator housing. For example, the connecting ring 2304 may be a cylindrical structure with a curved end CE that is chamfered. This provides a surface that conforms to the contoured exterior of the ventilator housing when properly inserted. Similarly, the conduit may be positioned closest to the housing. A coupler bend CB may be provided to hold the joint. The bends direct the gas passages of the coupler at an angle (e.g., 45° bend, 90° bend, etc.). It would be good if this could be done.

[0093] As used herein, the term "comprising" refers to the "open "open" meaning, i.e., "including" Therefore, the term "comprising" should be interpreted as meaning that The meaning of "closed" is "consisting only of" The meaning of "comply" is not limited to "comply only with" the meaning of "comply ... If "se," "comprised," and "comprises" are used , the same meaning will be applied to these terms.

[0094] Any reference to known prior art herein is without indication to the contrary. To the extent that such prior art is generally understood by those skilled in the art to which the present invention pertains, It should be further understood that no admission is made by any person whatsoever of what is known in the art.

[0095] While the present technology has been described in connection with several embodiments, it should be understood that the technology is not limited to the disclosed embodiments, but rather is intended to include various modifications and equivalent arrangements falling within the spirit and scope of the present technology. Furthermore, the various embodiments described above may be implemented in conjunction with other embodiments, e.g., one or more aspects of one embodiment may be combined with one or more aspects of another embodiment to achieve yet another embodiment. Furthermore, each independent feature or component of any assembly may constitute an additional embodiment. Additionally, while the present technology has particular application to invasive and non-invasive ventilation, it should be understood that patients suffering from various respiratory-related diseases or illnesses (e.g., congestive heart failure, diabetes, morbid obesity, stroke, bariatric surgery, etc.) may benefit from the foregoing teachings. Furthermore, the foregoing teachings have applicability to patients as well as non-patients in non-medical applications. The technical ideas that can be understood from the above embodiment will be described below. [1] 1. A respiratory treatment device configured to provide a flow of breathable gas to a patient, the respiratory treatment device comprising: a breathable air outlet; a fresh air inlet; and a pneumatic block module, the pneumatic block module comprising: A volute assembly including an inlet air passage, a mount for a blower, and an outlet air passage, the blower is mounted on the mount such that an impeller of the blower is in a flow path connecting the inlet air passage and the outlet air passage; a volute assembly; a casing enclosing the volute assembly, the casing having an air passage connected to an air port of the volute assembly; It is equipped with 10. A respiratory treatment device, comprising: a volute assembly having an inlet air passageway in fluid communication with the ambient air inlet; and a volute assembly having an outlet air passageway in fluid communication with the ambient air outlet. [2] The respiratory treatment device according to [1], characterized in that the device is an artificial ventilator. [3] The respiratory treatment device of [1] or [2], wherein the volute assembly is a molded rigid plastic device. [4] The respiratory treatment device according to any one of [1] to [3], wherein the casing is made of metal and has a lower part and an upper cover. [5] The respiratory treatment device according to any one of [1] to [4], wherein the casing has an air passage between the outside air inlet and the inlet air passage of the volute. [6] The respiratory treatment device described in [5], characterized in that the air passage in the casing is formed between the bottom plate of the casing and the bottom plate cover. [7] A respiratory treatment device described in any of [1] to [6], further comprising a removable inlet filter assembly aligned with the outside air inlet, the removable inlet filter assembly being held within a casing comprising the air inlet, and the casing and the inlet filter assembly being removable from the housing of the respiratory treatment device. [8] A respiratory treatment device as described in any of [1] to [7], further comprising a deformable connector sandwiched between the volute assembly and a printed circuit board, wherein a pressure sensor on the printed circuit board is aligned with a port through the connector when the printed circuit board is seated on the volute assembly, and wherein the port of the connector opens to an air passage within the volute assembly. [9] 1. A respiratory treatment device for delivering respiratory treatment, comprising: a pneumatic block module comprising a flow generator; a controller comprising a processor for controlling the flow generator; a chassis configured to couple to the controller and the pneumatic block, the chassis configured to engage one or more outer housing covers; It is equipped with The respiratory treatment device, wherein the chassis includes a plurality of separate respiratory component sections, and the operational components of the respiratory treatment device are separated from one another.

[10] [9] The device described in [9], wherein one of the individual breathing component sections comprises an expiratory section, and the device further comprises an external access hatch for the expiratory section.

[11] The device according to

[10] , characterized in that the expiratory section is provided with a gas port interface.

[12] The device described in

[11] , wherein the gas port interface includes one or more of a port for detecting expiratory pressure, a port for supplying PEEP air, and a set of ports for detecting expiratory flow.

[13]

[12] The device of

[12] further comprises an expiratory seal, the expiratory seal configured to fit to an inner surface of the expiratory section, the expiratory seal further configured to seal the gas port that interfaces with an expiratory routing module configured to be inserted into the section.

[14]

[13] The device described in

[13] , further comprising a breathing routing module configured to be removably inserted into the compartment, the breathing routing module comprising a gas port interface configured to mate with the gas port interface of the compartment.

[15]

[14] The device described in

[14] , characterized in that the expiratory gas routing module includes a gas routing passage and a flow element, the gas routing passage configured to direct the expiratory gas flow into the flow element for measuring the differential pressure across the flow element.

[16] The device according to

[14] , wherein the expiratory gas routing module comprises a PEEP supply passage.

[17] The device according to

[16] , characterized in that the PEEP supply passage is provided with a membrane.

[18] The device according to

[14] , characterized in that the expiratory air routing module comprises an expiratory pressure routing passage for pressure detection.

[19]

[14] The apparatus according to

[14] , characterized in that the gas port interface of the gas routing module comprises a void port.

[20] The device according to

[14] , characterized in that the expiratory gas routing module comprises an expiratory pressure detection inlet port.

[21] [9] The apparatus of claim 9, wherein one of the separate breathing component sections comprises an intake compartment, and the apparatus further comprises a filter assembly having an external access collar, the filter assembly being removably insertable into the compartment, the filter assembly being configured to filter supply air to the flow generator.

[22] [9] The apparatus described in [9], characterized in that the chassis further comprises a pneumatic block module seat, the seat being configured to fit around the periphery of the pneumatic block module.

[23] 1. A gas routing module for insertion into a respiratory treatment device, the gas routing module being configured to couple into a gas port interface of an individual compartment of a chassis of the respiratory treatment device, a plurality of gas routing passages configured to be in gas communication with the exhaled gas flow; a gas port interface comprising a plurality of gas ports in gas communication with the plurality of gas routing passages; It is equipped with The gas routing module, characterized in that the gas port interface includes two or more of: (a) a port for detecting expiratory pressure, (b) a port for supplying PEEP air, and (c) a set of ports for detecting expiratory flow through one or more of the plurality of gas routing passages of the module.

[24]

[23] The gas routing module of

[23] further comprising a flow element, wherein one of the plurality of gas routing passages is configured to direct an exhaled air flow into the flow element for measuring a differential pressure across the flow element.

[25] 2. The gas routing module of claim 1, wherein one of the plurality of gas routing passages of the module comprises a PEEP supply passage.

[26] 25. The gas routing module of claim 24, wherein the PEEP supply passage comprises a membrane.

[27] 26. The gas routing module of claim 25, further comprising a removable cover for accessing the membrane.

[28] A gas routing module according to any one of

[23] to

[27] , characterized in that one of the plurality of gas routing passages of the module is an expiratory pressure routing passage for pressure detection.

[29]

[23] The gas routing module of

[23] , wherein the gas port interface of the gas routing module comprises a void port.

[30]

[23] The gas routing module of

[23] , wherein one of the plurality of gas routing passages of the module comprises an expiratory pressure sensing inlet port.

[31] 1. A coupler for a gas routing module of a respiratory treatment device, comprising: a coupler body having a plurality of air pressure passages; first and second port connectors on the coupler body configured to connect to a respiratory treatment device at a ventilator connection end of the coupler body; first and second conduits integral with the coupler body and configured as pneumatic passages coupled to the first and second port connectors, respectively; an alignment ridge on the coupler body configured to restrict the orientation of the first and second port connectors to only one connection configuration with the respiratory treatment device; A coupler comprising:

[32]

[31] A coupler as described in

[31] , characterized in that the alignment ridge comprises a connecting ring that is inserted into a housing passage of the respiratory treatment device.

[33]

[31] or

[32] , characterized in that the alignment protrusion has a cylindrical space, and the first port connector is formed in a position offset within the cylindrical space.

[34] The coupler according to any one of

[31] to

[33] , wherein the second port connector is formed outside the cylindrical space.

[35] The coupler according to any one of

[31] to

[34] , wherein the first port connector is provided with a gas passage for exhalation pressure from a respiratory mask.

[36] The coupler according to any one of

[31] to

[35] , wherein the second port connector is provided with a PEEP control gas passage for a proximal valve.

[37]

[32] The coupler of

[32] , characterized in that the connecting ring of the alignment ridge comprises a chamfered cylinder, the surface of the chamfered cylinder being configured to align directly with the outer surface of the housing of the respiratory treatment device.

[38] The coupler according to any one of

[31] to

[37] , wherein the coupler body has a bent portion that inclines the direction of the air pressure passage of the coupler.

[39] 1. A method for maintaining good operation of a ventilator, comprising: removing a pneumatic block from a compartment of a ventilator housing, the ventilator being positioned within a patient environment, the pneumatic block including a casing, a volute assembly, a blower, an air passageway, and a sensor, and having an integrated calibration record; inserting a pneumatic block into the compartment of the ventilator housing; testing the operation of the ventilator within the patient environment; A method comprising:

[40]

[39] The method of

[39] , wherein the inserting includes replacing the removed pneumatic block into the ventilator housing after inspection for operating the ventilator.

[41]

[40] The method according to

[40] , characterized in that the test operation of the ventilator is performed by the returned pneumatic block.

[42] 39. The method of claim 39, wherein the inserting step includes inserting a second pneumatic block into the ventilator housing in place of the removed pneumatic block.

[43]

[42] The method according to

[42] , characterized in that the test operation of the ventilator is performed by the second pneumatic block.

[44]

[39] The method according to

[39] , further comprising inspecting the removed pneumatic block for reuse.

[45]

[44] The method according to

[44] , characterized in that the inspection of the removed pneumatic block includes cleaning the pneumatic block.

[46]

[44] The method according to

[44] , characterized in that the inspection of the removed pneumatic block includes calibrating the operation of one or more components of the pneumatic block.

[47] The method according to

[44] , characterized in that the inspection is performed within the patient environment.

[48]

[44] The method of

[44] , wherein the inspection is performed contemporaneously with the ventilator operable within the patient environment but away from the patient environment.

[49]

[39] The method according to

[39] , further comprising pre-calibrating the pneumatic block to be inserted prior to said insertion.

[50] A pneumatic blocking device removably inserted into a ventilator housing, comprising: a casing having an air passage; a volute assembly; a blower coupled to the volute assembly; and It is equipped with A pneumatic block device, characterized in that the casing encloses the volute assembly, and the air passage of the casing is connected to an air port on the volute assembly.

[51] The pneumatic block device according to

[50] , further comprising an integrated calibration record.

Claims

1. 1. A respiratory treatment device for delivering respiratory treatment, comprising: a pneumatic block module comprising a flow generator; a controller including a processor for controlling the flow generator of the pneumatic block module; a chassis configured to couple to and house a plurality of components of the respiratory treatment device, including the controller and the pneumatic block module, the chassis configured to engage one or more external housing covers; It is equipped with the chassis includes a plurality of individual breathing component areas that accommodate the plurality of components in isolation from one another, the individual breathing component areas being defined by partitions included in the chassis; The chassis has an air passage for transmitting air between different respiratory component sections in the plurality of individual respiratory component sections, and the air passage is embedded in the chassis including the partition.

2. 10. The respiratory treatment device of claim 1, wherein one of the separate breathing component sections comprises an expiratory compartment, the device further comprising an exterior access hatch for the expiratory section.

3. 3. The respiratory treatment device of claim 2, wherein the expiratory section includes a gas port interface.

4. 4. The respiratory treatment device of claim 3, wherein the gas port interface comprises one or more of a port for sensing expiratory pressure, a port for PEEP air supply, and a set of ports for expiratory flow sensing.

5. 5. The respiratory treatment device of claim 4, further comprising an exhalation seal configured to conform to an interior surface of the expiratory compartment, the exhalation seal further configured to seal the gas port for interfacing with an exhalation routing module configured to be inserted into the compartment.

6. 6. The respiratory treatment device of claim 5, further comprising the exhalation gas routing module configured to be removably inserted into the compartment, the exhalation gas routing module comprising a gas port interface configured to mate with the gas port interface of the compartment.

7. 7. The respiratory treatment device of claim 6, wherein the expiratory gas routing module comprises a gas routing passageway and a flow element, the gas routing passageway adapted to direct the expiratory gas flow into the flow element for measuring flow across the flow element.

8. 7. A respiratory treatment device as defined in claim 6, wherein the expiratory gas routing module includes a PEEP delivery path.

9. 9. A respiratory treatment device as recited in claim 8, wherein the PEEP delivery passage comprises a membrane.

10. 7. The respiratory treatment device of claim 6, wherein the expiratory gas routing module includes an expiratory pressure routing passage for pressure sensing.

11. A respiratory treatment device as described in claim 6, characterized in that the gas port interface of the expiratory routing module has an empty port.

12. 7. The respiratory treatment device of claim 6, wherein the expiratory gas routing module includes an expiratory pressure sensing inlet port.

13. 10. The respiratory treatment device of claim 1, wherein one of the individual respiratory component sections comprises an inspiratory section, the device further comprising a filter assembly having an external access collar, the filter assembly being removably insertable into the section, the filter assembly being configured to filter supply air to the flow generator.

14. 10. The respiratory treatment device of claim 1, wherein the chassis further comprises a pneumatic block module seat, the seat configured to fit around a periphery of the pneumatic block module.

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