Description:TECHNICAL FIELD
[0001] The present disclosure relates to the field of ventilators for patients. More particularly, the present disclosure relates to an expiratory valve of a ventilator to maintain an appropriate exhalation profile of a patient on ventilator and enable cost-effective and efficient adjustment of the settings of the ventilator for ensuring adequate inhalation and exhalation of the patient on ventilator.

BACKGROUND
[0002] Background description includes information that may be useful in understanding the present disclosure. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed disclosure, or that any publication specifically or implicitly referenced is prior art.
[0003] A ventilator is a medical device designed to assist or replace the natural breathing process in individuals who are unable to breathe adequately on their own. It delivers breathable air into and out of the lungs, aiding patients who have difficulty breathing due to various conditions, such as respiratory failure, severe lung diseases, anaesthesia during surgery, or other critical medical situations. Ventilators work by providing a controlled flow of oxygen-enriched air into the lungs and removing carbon dioxide from the body. They can be adjusted to deliver specific volumes or pressures of air, synchronized with a patient's breathing pattern, and customized to suit individual needs. There are different types of ventilators, ranging from invasive ones that require a tube inserted into the patient's windpipe (endotracheal or tracheostomy tube) to non-invasive ones that use masks or nasal prongs. These devices play a crucial role in supporting patients' respiratory functions, particularly in intensive care units (ICUs) and emergency settings. Generally, for all types of ventilators, the breaths coming out from ventilated patient’s lungs travel through the ‘expiratory/exhalation valve’ wherein the valve regulates the required flow rate and maintains the required exhalation pressure. Typically, a flow sensor is also attached to or is integrated within the expiratory valve body to measure the expired flow. Generally, the expiratory modules in ventilators or similar devices have a lot of sensors and electronic components built in. Even though such modules ensure high accuracy, yet, the problem is that the modules are very expensive as sensors and electronic components is built in. Moreover, expiratory modules have to be replaced in regular intervals which becomes a costly affair. Alternatively, some expiratory modules have sensors and electronic components that are autoclavable. However, the cost of sealant and electronics that can sustain high autoclaving temperatures (121-134 degrees Celsius) is very high. Again, this cost is to be borne. Further, autoclaving cycles are limited, and after a few months/couple of years, the modules have to be replaced. Secondly, the typical type of flow sensor used in conventional ventilators uses digital hot wire anemometry-based flow sensors that may get damaged by debris in a patient’s expired gas or medicinal nebulization particles.
[0004] To address these limitations, the present invention provides an expiratory valve of a ventilator to maintain an appropriate exhalation profile of a patient on a ventilator and enable cost-effective and efficient adjustment of the settings of the ventilator for ensuring adequate inhalation and exhalation of the patient on the ventilator.

OBJECTS OF THE PRESENT DISCLOSURE
[0005] Some of the objects of the present disclosure, which at least one embodiment herein satisfies are as listed herein below.
[0006] It is an object of the present disclosure to overcome the above drawbacks, limitations, and shortcomings associated with the existing ventilators.
[0007] It is an object of the present disclosure to provide an expiratory valve of a ventilator to maintain an appropriate exhalation profile of a patient on a ventilator and enable cost-effective and efficient adjustment of the settings of the ventilator for ensuring adequate inhalation and exhalation of the patient on a ventilator.
[0008] It is an object of the present disclosure to provide an expiratory valve of a ventilator to regulate the exhalation phase of the breathing cycle.
[0009] It is an object of the present disclosure to provide an expiratory valve of a ventilator to ensure that the ventilator delivers the appropriate amount of air at the correct pressure and flow rates during exhalation.
[0010] It is an object of the present disclosure to provide an expiratory valve of a ventilator to detect obstructions or irregular patterns in airflow and trigger alarms or alerts on the ventilator, notifying healthcare providers of potential issues that require attention.

SUMMARY
[0011] This section is provided to introduce certain objects and aspects of the present disclosure in a simplified form that are further described below in the detailed description. This summary is not intended to identify the key features or the scope of the claimed subject matter.
[0012] The present disclosure relates to the field of ventilators for patients. More particularly, the present disclosure relates to an expiratory valve of a ventilator to maintain an appropriate exhalation profile of a patient on a ventilator and enable cost-effective and efficient adjustment of the settings of the ventilator for ensuring adequate inhalation and exhalation of the patient on the ventilator.
[0013] In an aspect, the present disclosure discloses an expiratory valve of a ventilator. The expiratory valve of a ventilator includes an expiratory diaphragm. The expiratory diaphragm is coupled to a linear actuator, positioned inside the ventilator, and is configured to maintain an appropriate air pressure level within the ventilator during exhalation. The expiratory valve of the ventilator further includes a flow element. The flow element is operatively coupled to a differential flow sensor. The flow element is configured to monitor an air flow rate during exhalation and detect abnormalities in the exhaled airflow. The expiratory valve of the ventilator further includes an expiratory manifold to collect and direct a flow of exhaled air to an outer environment. The expiratory diaphragm regulates gas exhaled and transmits the regulated gas to the flow element for measurement of flow rate and adjustment of the linear actuator based on the flow rate to maintain a complete exhalation profile of the patient and enables configuration of ventilatory settings of the ventilator to meet respiratory requirements of the patient.

BRIEF DESCRIPTION OF DRAWINGS
[0014] The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in, and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure, and together with the description, serve to explain the principles of the present disclosure.
[0015] In the figures, similar components, and/or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components. If only the first reference label is used in the specification, the description applies to any one of the similar components having the same first reference label irrespective of the second reference label.
[0016] FIGs. 1A-1B illustrate exemplary representations (100A-100B) of an exploded view of the proposed expiratory valve of a ventilator, in accordance with an embodiment of the present disclosure.
[0017] FIG. 2 illustrates an exemplary representation (200) of the flow of exhaled gas through the proposed expiratory valve of a ventilator, in accordance with an embodiment of the present disclosure.
[0018] FIG. 3 illustrates an exemplary representation (300) of a ventilator provided with the proposed expiratory valve of a ventilator, in accordance with an embodiment of the present disclosure.
[0019] FIG. 4 illustrates an exemplary sectional representation (400) of the proposed expiratory valve of a ventilator provided with the proposed expiratory valve of a ventilator, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION
[0020] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit, and scope of the present disclosure as defined by the appended claims.
[0021] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present invention. It will be apparent to one skilled in the art that embodiments of the present invention may be practiced without some of these specific details.
[0022] Specific details are given in the following description to provide a thorough understanding of the embodiments. However, it will be understood by one of ordinary skill in the art that the embodiments may be practiced without these specific details. For example, circuits, systems, networks, processes, and other components may be shown as components in block diagram form in order not to obscure the embodiments in unnecessary detail. In other instances, well-known circuits, processes, algorithms, structures, and techniques may be shown without unnecessary detail to avoid obscuring the embodiments.
[0023] The word “exemplary” and/or “demonstrative” is used herein to mean serving as an example, instance, or illustration. For the avoidance of doubt, the subject matter disclosed herein is not limited by such examples. In addition, any aspect or design described herein as “exemplary” and/or “demonstrative” is not necessarily to be construed as preferred or advantageous over other aspects or designs, nor is it meant to preclude equivalent exemplary structures and techniques known to those of ordinary skill in the art. Furthermore, to the extent that the terms “includes,” “has,” “contains,” and other similar words are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term “comprising” as an open transition word without precluding any additional or other elements.
[0024] Reference throughout this specification to “one embodiment” or “an embodiment” or “an instance” or “one instance” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, the appearances of the phrases “in one embodiment” or “in an embodiment” in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0025] The present disclosure relates to the field of ventilators for patients. More particularly, the present disclosure relates to an expiratory valve of a ventilator to maintain an appropriate exhalation profile of a patient on a ventilator and enable cost-effective and efficient adjustment of the settings of the ventilator for ensuring adequate inhalation and exhalation of the patient on the ventilator.
[0026] FIGs. 1A-1B illustrate exemplary representations (100A-100B) of an exploded view of the proposed expiratory valve of a ventilator, in accordance with an embodiment of the present disclosure. As illustrated in the figures, the expiratory valve (100) includes an expiratory diaphragm (102). In the ventilator, the expiratory diaphragm (102) is operatively coupled with a linear actuator. In an aspect of the present disclosure, the expiratory diaphragm (102) regulates an exhalation phase of the breathing cycle. Further, the expiratory diaphragm (102) may control the release of exhaled air from the lungs of the ventilated patient to the atmosphere. Coupled with the linear actuator, the expiratory diaphragm (102) may also assist in maintaining appropriate pressure levels within the ventilator during exhalation. Coordinated with different components of the ventilator, the expiratory diaphragm (102) may also help in regulating the timing and synchronization of the breathing cycle of the patient, ensuring a smooth transition from inhalation to exhalation. In an embodiment, the linear actuator may be positioned inside the expiratory valve of the ventilator.
[0027] In an aspect of the present disclosure, the expiratory valve (100) includes a flow element (104). Generally, ventilators include an expiratory flow sensor for monitoring and measuring airflow during the exhalation phase of the respiratory cycle of the patient. In an aspect of the present disclosure, the flow element (104) of the expiratory valve (100), in combination with a differential flow sensor, acts as the expiratory flow sensor of the ventilator. The flow element (104) accurately detects and measures the rate at which air is exhaled by the patient. The differential flow sensor continuously monitors the flow rate of air leaving the lungs of the patient during exhalation. The differential flow sensor also measures the volume and velocity of the exhaled breath to determine an expired flow rate. The expired flow rate may help in maintaining the prescribed breathing parameters such as tidal volume, respiratory rate, and pressure support for the ventilated patient. By providing real-time information on exhaled airflow, the flow element (104) may adjust the ventilatory settings of the ventilator to match the respiratory needs of the patient. Further, the flow element (104) may ensure that the ventilator delivers an appropriate amount of air at the correct pressure and flow rates during exhalation. Abnormalities in the exhaled airflow, such as obstructions or irregular patterns, can be detected by the differential flow sensor. The detection of abnormalities can trigger alarms or alerts on the ventilator, notifying healthcare providers of potential issues that require attention. Further, the flow element (104) may create different pressure drops at different flow rates. The created pressure drops are sensed by the differential pressure sensor. The differential pressure sensor may then send the data to a controller of the ventilator for determining the expiratory flow rate based on a predetermined equation or lookup table stored in a memory of a controller of the ventilator.
[0028] In an aspect of the present disclosure, the expiratory valve (100) includes a rubber seal (106). The rubber seal (106) connects the expiratory path to the pressure sensor. The pressure sensor continuously monitors and measures the pressure in the ventilator's expiratory limb or airway during the patient's exhalation. Further, the pressure sensor provides real-time feedback on expiratory pressure exerted by the exhaled breath of the patient. By accurately measuring the expiratory pressure, the pressure sensor may enable the controller of the ventilator to regulate and adjust various ventilation parameters, including Positive End Expiratory Pressure (PEEP) levels, to match the respiratory requirements of the ventilated patient. Further, the pressure sensor ensures that the pressure within the airways remains optimal for proper gas exchange and lung function. Monitoring expiratory pressure through the pressure sensor contributes to patient safety by preventing complications associated with inadequate or excessive pressure during exhalation. The pressure sensor also helps to maintain appropriate pressure levels for comfortable and effective breathing while minimizing risks of lung injury or barotrauma.
[0029] In an aspect of the present disclosure, the expiratory valve (100) includes an expiratory manifold (108). The expiratory manifold (108) may be responsible for managing and directing the flow of exhaled gases from the ventilated patient to the environment. The expiratory manifold (108) acts as a pathway or conduit that collects and directs the exhaled gases from the airway or breathing circuit to the outside environment. The expiratory manifold (108) may provide a route for the safe discharge of exhaled air. One or more components of the expiratory valve (100) are connected to the expiratory manifold (108). Thus, the expiratory manifold (108) may be a structural base for the one or more components of the expiratory valve (100).
[0030] In an aspect of the present disclosure, the expiratory valve (100) includes a water trap (110). The water trap (110) is designed to capture and collect any excess moisture and water vapor that may accumulate within the ventilator. The moisture can arise from humidification structures in the ventilator or from the exhaled breath of the ventilated patient.
[0031] In an aspect of the present disclosure, the expiratory valve (100) of the ventilator includes a locking ring (112). The locking ring (112) ensures a tight and secure connection between the expiratory manifold (108) and the main body of the ventilator. By securely fastening the connections, the locking ring (112) may be able to prevent air leaks or unintentional disconnections that could compromise the delivery of the exhaled breath of the ventilated patient or cause disruptions in the ventilation process. The locking ring (112) is crucial for maintaining consistent and reliable ventilation for the patient.
[0032] In an aspect of the present disclosure, the expiratory valve (100) of the ventilator includes a flow element seal (114). The flow element seal (114) may ensure airtight sealing between the flow element (104) and the expiratory manifold (108). The flow element seal (114) may prevent any unintentional leakage between the flow element (104) and the expiratory manifold (108) which might result in the measurement of an incorrect expiratory flow rate. In an embodiment of the present disclosure, the flow element seal (114) may be a unitary construction of moulded, flexible material such as silicon rubber. Preferably, the material should be flexible and resistant to wear and degradation.
[0033] In an aspect of the present disclosure, the expiratory diaphragm (102) regulates gas exhaled by the patient and transmits the regulated gas to the flow element (104) for measurement of flow rate and adjustment of the linear actuator based on the flow rate to maintain a complete exhalation profile of the patient and enable configuration of ventilatory settings of the ventilator to meet respiratory requirements of the patient.
[0034] FIG. 2 illustrates an exemplary representation (200) of the flow of exhaled gas through the proposed expiratory valve of a ventilator, in accordance with an embodiment of the present disclosure. The ventilator is a medical device used to help people breathe when they're unable to do so on their own. It assists with the exchange of oxygen and carbon dioxide in the lungs by delivering breathable air with controlled levels of oxygen and pressure. Ventilators are crucial in various situations, such as during surgery, in intensive care units (ICUs), or for individuals experiencing respiratory failure due to conditions like pneumonia, lung injury, or certain diseases affecting the respiratory system. These machines can support a patient's breathing temporarily until they can breathe independently again or as a permanent solution in cases of chronic respiratory conditions. After inserting a tube into the airway of the patient, the tube is connected to the ventilator to enable assisted breathing for the patient. Medical professionals then set specific parameters on the ventilator based on the condition of the patient. The parameters generally include rate of breaths per minute, volume of air delivered with each breath, oxygen concentration, and pressure used to inflate the lungs. The ventilator uses a pump or a fan to deliver air into the lungs of the patient through the tube. The ventilator applies positive pressure to inflate the lungs, mimicking the natural breathing process. The ventilator assists in exhalation by allowing passive exhalation or by actively removing air from the lungs to assist the patient in breathing out carbon dioxide.
[0035] In an embodiment of the present disclosure, the gas exhaled by the ventilated patient enters the expiratory valve (100). The exhaled gas gets regulated by the expiratory diaphragm (102) operatively coupled to the linear actuator. The regulated gas then enters the flow element (104). The flow element (104) measures the flow rate of the exhaled gas and transmits the data to a controller of the ventilator. The controller adjusts the linear actuator for further regulation of the gas. This flow of the exhaled gas in a closed loop ensures the maintenance of a proper exhalation flow profile for the ventilated patient. The flow element (104) works on the principle of differential pressure. The higher the flow rate of the exhaled gas, the higher the pressure difference measured. The flow rate is mapped with the pressure difference to keep track of the exhalation profile of the patient.
[0036] In an embodiment of the present disclosure, the ventilator may include a variety of other components, including sources for pressurized air and/or oxygen, mixing units, valves, sensors, tubes, accumulators, air filters, etc. The Controller may be operatively coupled with the ventilator, signal measurement, and acquisition systems, and an operator interface may be provided to enable an operator to interact with the ventilator (e.g., change ventilator settings, select operational modes, view monitored parameters, etc.). The Controller may include memory, one or more processors, storage, and/or other components of the type commonly found in command-and-control computing devices.
[0037] In an aspect of the present disclosure, the memory is computer-readable storage media that stores software that is executed by the processor and which controls the operation of the ventilator. In an embodiment, the memory comprises one or more solid-state storage devices such as flash memory chips. In an alternative embodiment, the memory may be mass storage connected to the processor through a mass storage controller (not shown) and a communications bus (not shown). Although the description of computer-readable media contained herein refers to solid-state storage, it should be appreciated by those skilled in the art that computer-readable storage media can be any available media that can be accessed by the processor. Computer-readable storage media includes volatile and non-volatile, removable, and non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, program modules, or other data. The controller issues commands to the ventilator to control the breathing assistance provided to the patient by the ventilator. The specific commands may be based on inputs received from the patient, sensors, operator interface, and/or other components of the ventilator. In an example embodiment, the operator interface may include a display unit that may be touch-sensitive, enabling the display unit to serve both as an input user interface and an output device.
[0038] FIG. 3 illustrates an exemplary representation (300) of a ventilator provided with the proposed expiratory valve of a ventilator, in accordance with an embodiment of the present disclosure. In an aspect of the present disclosure, the ventilator (300) includes a breathing circuit that further includes an inspiratory unit (302) and an expiratory unit (100). The inspiratory unit (302) is responsible for delivering air from the ventilator (300) to the patient and often include a humidifier unit to add moisture to the air and an oxygen mixer unit to control concentration of oxygen in the air being delivered to the patient. The inspiratory unit (302) may also include purification components that help in cleaning and purifying the air that is being delivered to the patient, removing any potential contaminants, to ensure that the patient breathes in fresh and pure air while connected to the ventilator (300). After inhaling the air through the inspiratory unit (302), the patient exhales air that flows into the expiratory unit which is the expiratory valve (100) of the ventilator. In the expiratory valve (100), the exhaled gas enters the expiratory diaphragm (102) coupled to the linear actuator (304). The expiratory diaphragm (102), with the help of the pressure sensor (310), regulates the gas exhaled by the patient and transmits the regulated gas to the flow element (104), coupled with the differential pressure sensor (306), for measurement of flow rate and adjustment of the linear actuator (304) based on the flow rate to maintain a complete exhalation profile of the patient and enable configuration of ventilatory settings of the ventilator to meet respiratory requirements of the patient. The pressure sensor may continuously monitor and measure the pressure in the expiratory limb or airway of the ventilator during exhalation and provide real-time feedback on the pressure exerted by the exhaled breath. By accurately measuring the expiratory pressure, the pressure sensor may enable the controller (308) of the ventilator (300) to regulate and adjust various ventilation parameters, including PEEP levels, to match the patient's respiratory requirements. The pressure drops created by the flow element (104) are sensed by the differential pressure sensor (306). The differential pressure sensor (306) may then send the data to the controller (308) of the ventilator (300) for determining the expiratory flow rate based on the predetermined equation or lookup table stored in a memory of a controller of the ventilator. The expiratory valve (100) of the ventilator (300) also includes an expiratory manifold (108). The expiratory manifold (108) may be responsible for managing and directing the flow of exhaled gases from the ventilated patient to the environment. The expiratory manifold (108) acts as a pathway or conduit that collects and directs the exhaled gases from the airway or breathing circuit to the outside environment. The expiratory manifold (108) may provide a route for the safe discharge of exhaled air. This embodiment provides for a substantially maintenance-free expiratory valve. The expiratory valve does not need to be cleaned or disinfected between patients, which often exposes valve material to wear and tear. Furthermore, no valve membranes of the backup part of the valve are present that regularly have to be exchanged during maintenance of the ventilator. The expiratory valve does not have to be disassembled during maintenance, which contributes to low maintenance costs. Moreover, the expiratory valve does not consist of sensors or any other electronic components which makes the process of sterilization of the expiratory valve convenient and safe.
[0039] FIG. 4 illustrates an exemplary sectional representation (400) of the proposed expiratory valve of a ventilator provided with the proposed expiratory valve of a ventilator, in accordance with an embodiment of the present disclosure. As illustrated in the figure, exhaled air enters into the expiratory valve through a flow inlet (402). The flow inlet (402) is coupled to the pressure sensor (310) that is configured to continuously monitor and measure the pressure in the ventilator's expiratory limb or airway during the patient's exhalation. The pressure sensor (310) is also configured to provide real-time feedback on the pressure exerted by the exhaled breath. By accurately measuring the expiratory pressure, the pressure sensor (310) may help in regulating and adjusting various ventilation parameters, including PEEP levels, to match the patient's respiratory requirements. The exhaled air may then flow through the expiratory manifold (108) that may be responsible for managing and directing the flow of exhaled gases from the ventilated patient to the environment through the flow outlet (404).
[0040] The components described above are meant only to exemplify various possibilities. In no way should the aforementioned exemplary computer system limit the scope of the present disclosure.
[0041] If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[0042] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context dictates otherwise.
[0043] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions, or examples, which are comprised to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION
[0044] The proposed invention overcomes the above drawbacks, limitations, and shortcomings associated with the existing expiratory breathing circuits of ventilators.
[0045] The present disclosure provides an expiratory valve of a ventilator to maintain an appropriate exhalation profile of a patient on the ventilator and enable cost-effective and efficient adjustment of the settings of the ventilator to ensure adequate inhalation and exhalation of the patient on the ventilator.
[0046] The present disclosure provides an expiratory valve of a ventilator to regulate the exhalation phase of the breathing cycle.
[0047] The present disclosure provides an expiratory valve of a ventilator to ensure that the ventilator delivers the appropriate amount of air at the correct pressure and flow rates during exhalation.
[0048] The present disclosure provides an expiratory valve of a ventilator to detect obstructions or irregular patterns in airflow and trigger alarms or alerts on the ventilator, notifying healthcare providers of potential issues that require attention.
, Claims:1. An expiratory valve (100) of a ventilator, comprising:
an expiratory diaphragm (102), coupled to a linear actuator positioned inside the ventilator, and configured to maintain an appropriate air pressure level within the ventilator during exhalation;
a flow element (104), operatively coupled to a differential flow sensor, to monitor an air flow rate during exhalation and detect abnormalities in exhaled airflow; and
an expiratory manifold (108) to collect and direct a flow of exhaled air to an outer environment;
wherein the expiratory diaphragm (102), in conjunction with a pressure sensor (310), regulates exhaled gas and transmits the regulated gas to the flow element (104) for measurement of flow rate and adjustment of the linear actuator based on the flow rate.
2. The expiratory valve (100) as claimed in claim 1, wherein the expiratory diaphragm (102) regulates timing and synchronization of breathing cycle of the patient during transition from inhalation to exhalation of the patient.
3. The expiratory valve (100) as claimed in claim 1, wherein the expiratory diaphragm (102) controls a release of exhaled air from the patient to the atmosphere.
4. The expiratory valve (100) as claimed in claim 1, wherein the flow element (104) maintains prescribed breathing parameters of the patient comprising tidal volume, respiratory rate, and air pressure.
5. The expiratory valve (100) as claimed in claim 1, wherein the flow element (104) detects the abnormalities in the exhaled airflow of the patient comprising obstructions and irregular patterns in airflow.
6. The expiratory valve (100) as claimed in claim 1, wherein the flow element (104) creates a different air pressure drop on different flow rates that is sensed by the differential pressure sensor for determining the expiratory flow rate.
7. The expiratory valve (100) as claimed in claim 1, wherein the expiratory manifold (108) is connected to a water trap (110) to prevent condensation caused by moisture content of exhaled air in the ventilator.
8. The expiratory valve (100) as claimed in claim 1, wherein the expiratory manifold (108) comprises a locking ring (112) to maintain an airtight connection with the ventilator
9. The expiratory valve (100) as claimed in claim 1, wherein the flow element (104) maintains an airtight sealing with the expiratory manifold (108) by a flow element seal to prevent inaccurate measurement of an expiratory flow rate,
10. The expiratory valve (100) as claimed in claim 1, wherein the pressure sensor (310) provides real-time feedback on air pressure exerted by an exhaled breath of the patient to regulate and adjust ventilation parameters comprising PEEP levels.