NL2037701B1 - Device for purifying inhaled air - Google Patents
Device for purifying inhaled airInfo
- Publication number
- NL2037701B1 NL2037701B1 NL2037701A NL2037701A NL2037701B1 NL 2037701 B1 NL2037701 B1 NL 2037701B1 NL 2037701 A NL2037701 A NL 2037701A NL 2037701 A NL2037701 A NL 2037701A NL 2037701 B1 NL2037701 B1 NL 2037701B1
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- NL
- Netherlands
- Prior art keywords
- filter
- contact surface
- insertable body
- air
- filtering particles
- Prior art date
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B23/00—Filters for breathing-protection purposes
- A62B23/06—Nose filters
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- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The invention relates to a device for purifying inhaled air, comprising at least one insertable body configured to be inserted into a nostril, wherein at least one insertable body comprises at least one contact surface configured to be in contact with inhaled air, wherein at least one part of at least one insertable body is made of at least one composite material comprising at least one polymer and a plurality of filtering particles, wherein at least part of the filtering particles is exposed at at least part of the at least one contact surface.
Description
Device for purifying inhaled air
The invention relates to a device for purifying inhaled air. The invention also relates to method of manufacturing a device for purifying inhaled air.
People use nose filters for various reasons, but primarily to protect their respiratory health. Various variants of nose filters are known and the design thereof depends on the intended use. Nose filters can for example be designed for allergy relief purposes or asthma management. Such filters are configured to reduce exposure to allergens such as dust, pollen, dust mites, and pet dander, providing relief for individuals with allergies and allergic rhinitis. It is also conceivable that nose filters are used in areas with high levels of air pollution in order to filter for example particulate matter, harmful fumes, ozone and/or vehicle emissions. Another field of use can be in the industrial areas which classify as environments with airborne hazards, such as construction sites, factories or agricultural areas. People may use nose filters in such areas to protect themselves from inhaling dust, fumes, and other harmful substances. lt is also conceivable that nose filters are specifically designed for preventing infection by airborne pathogens, such as viruses, bacteria, fungi and/or toxic substances.
While nose filters can offer benefits in terms of air filtration and respiratory protection, the known embodiments typically experience several drawbacks. Users complain often about discomfort, in particular if the filters are not properly fitted or if they cause pressure or irritation in the nasal passages. A further known problem is that the filter material could restrict airflow through the nasal passages, making breathing feel more difficult or constrained. From aesthetic point of view, nose filters can be visible to others, especially if they protrude from the nostrils. This visibility may lead to self-consciousness or discomfort, particularly in social or professional settings. A drawback from practical point of view, is that most nose filters need to be regularly cleaned or replaced to maintain their effectiveness.
Failure to do so can lead to the accumulation of trapped particles, reducing airflow and filtration efficiency. Since nose filters can be effective in filtering airborne particles and providing respiratory protection there is need for the provision of a device which overcomes at least part of these drawbacks and which balances effectiveness with comfort and practicality.
Therefore, it is a goal of the invention to provide an improved nose filter which overcomes at least part of the abovementioned drawbacks or at least to provide an alternative to the known devices.
The invention provides thereto a device for purifying inhaled air, comprising at least one insertable body configured to be inserted into a nostril, wherein at least one insertable body comprises at least one contact surface configured to be in contact with inhaled air wherein at least one part of at least one insertable body comprises, or is made of, at least one material, in particular a composite material, said (composite) material preferably comprising at least one polymer and preferably a plurality of filtering particles. At least part of the filtering particles is preferably exposed at at least part of the at least one contact surface.
The device according to the invention could also be referred to as a nose filter. The device is in particular configured for purifying at least part of the inhaled air. The device may be configured for filtering pathogens such as viruses and/or bacteria.
More in particular, the device according to the invention can be configured for neutralizing at least part of the pathogens, such as viruses and/or bacteria, from inhaled air. Within the context of the present invention, when it is referred to inhaled air, also inhaled and/or exhaled air could be meant. The contact surface can for example be defined by the surface area of at least one insertable body.
In a preferred embodiment, the device for purifying inhaled air according to the invention comprises at least one insertable body configured to be inserted into a nostril, wherein at least one insertable body comprises at least one contact surface configured to be in contact with inhaled air, wherein at least one part of at least one insertable body is made of at least one composite material comprising at least one polymer and a plurality of filtering particles, wherein at least part of the filtering particles is exposed at at least part of the at least one contact surface, and wherein at least part of the filtering particles comprise silver particles, in particular silver nanoparticles and/or wherein at least part of the filtering particles comprise activated carbon.
The device according to the present invention has several benefits over conventional devices for purifying inhaled air, or nose filters. The device according to the invention enables neutralizing of pathogens, such as viruses and/or bacteria, from inhaled air. The use of at least one insertable body which comprises at least one contact surface configured to be in contact with inhaled air, wherein at least one part of at least one insertable body is made of at least one composite material comprising at least one polymer and a plurality of filtering particles, wherein at least part of the filtering particles is exposed at at least part of at least one contact surface enables that inhaled air can be effectively guided through and/or along the contact surface(s). The silver (nano)particles and/or the activated carbon particles will contribute to neutralizing of pathogens, such as viruses and/or bacteria, from the inhaled air. Such embodiment of the device in fact provides air treatment, in particular air neutralization.
A further benefit of the device according to the present invention is that the device does not affect the humidity of the inhaled air. The device is relatively simple and will positively contribute to the quality of the inhaled air. The use of a composite material comprising at least one polymer material further results in the device being easy to clean.
It is beneficial if at least part of the filtering particles are embedded and/or dispersed within at least one polymer material. It is for example possible that least part of the plurality of filtering particles is embedded in a polymer matrix. It is also conceivable that at least one composite material comprises a polymer matrix comprising filtering particles. At least one composite material could for example comprise a polymer matrix comprising a plurality of filtering particles. The filtering particles could in such embodiment have a reinforcing effect to the polymer material. At least part of the filtering particles being embedded in at least one polymer material could for example positively contribute to the resistance to deformation of the device and/or the sensibility to cracking. It is for example also possible that at least part of the filtering particles is embedded and/or dispersed within the polymer matrix. It is preferred that at least part of the filtering particles is exposed at at least part of the at least one contact surface.
it is beneficial if at least part of the filtering particles comprises at least one metal.
More is particular it would be beneficial if at least part of the filtering particles comprises at least one noble metal. At least one part of the filtering particles comprising at least one metal could be beneficial for the mechanical and chemical characteristics of the device. In a beneficial embodiment, at least part of the filtering particles are silver nanoparticles, in particular colloidal silver nanoparticles. A benefit of at least part of the filtering particles being silver nanoparticles is that such particles benefit of a relatively good thermal conductivity. This will positively contribute to the quality of the inhaled air. During use, the device is positioned within a nostril, wherefore part of device will be positioned upon part of the nasal mucous membranes. The nasal mucous membranes have as function to humidify and/or moisturize inhaled air and warm and/or cool the air before it enters the lungs. Due to the presence of silver nanoparticles this process will not be negatively affected during use of the device. An absorbing filter, as often seen in the prior art, could for example absorb moisture which could negatively affect the quality of the inhaled air in terms of temperature and/or humidity. Alternatively and/or additionally, it is also conceivable that that least part of the filtering particles comprises copper, copper ions, silver, silver ions, silver oxide, bronze, zinc ions, zinc oxide and/or combinations and/or alloys thereof. The use of such metal(s) could exhibit antimicrobial activity against a wide range of bacteria, viruses, and fungi. As indicated, the device according to the present invention may prevent that discomfort caused by dry or cold air will occur or worsens. The configuration and material choices of the device can enable that sufficient moisture is maintained in the nostrils.
In a possible embodiment, at least part of the filtering particles are antibacterial particles. The use of antibacterial particles could positively contribute to the purification of the inhaled air. It is for example possible that at least part of the filtering particles comprises an antibacterial coating. It is also conceivable that the applied antibacterial particles have an antibacterial effect. It is further conceivable that at least part of the device according to the invention comprises or is coated with at least one essential oil, such as but not limited to as tea tree oil, thyme oil, and/or oregano oil. Such oils could act as natural disinfectants.
In yet a further possible embodiment of the device according to the invention, at least part of at least one contact surface is coated with filtering particles. It also possible that the device is substantially completely coated with filtering particles.
The filtering particles could be any of the described examples thereof. Applying at 5 least part of the filtering particles onto the contact surface in the form of a coating could contribute to an enhanced contact between the filtering particles and the air which is to be inhaled. At least part of the filtering particles could form a functional layer upon at least part of the contact surface.
Itis for example possible that the surface area defined by the filtering particles which are exposed at at least part of the at least one contact surface is at least 30%, preferably at least 40%, more preferably at least 50% and most preferably at least 60% of the total surface area of at least one insertable body. It is also conceivable that the surface area defined by the filtering particles which are exposed at at least part of the at least one contact surface is at least 75% and most preferably at least 90% of the total surface area of at least one insertable body. it is beneficial if at least part of at least one contact surface is structured. It is for example conceivable that at least part of the contact surface comprises a surface structure. Applying at least one surface structure typically results in an increased surface area, which can positively contribute to the purifying effect of the device.
The use of a structured contact surface could also have a beneficial effect on the pathway of the inhaled air. it could positively contribute to the ease of breathing of the user of the device. In a possible embodiment, at least part of at least one contact surface comprises an organic structure. The use of an organic structure could contribute to effective and efficient purification of air flow over and/or through the organic structure. It is for example possible that at least part of the organic structure comprises through holes through which inhaled air can flow. Use of an organic structure could for example promote air dispersion resulting in a better purification effect. it is possible that at least part of the filtering particles is entrapped within at least part of a structure of at least one contact surface, preferably such that at least part of the filtering particles is exposed at at least part of the at least one contact surface. In a possible embodiment, at least part of at least one contact surface comprises nanowires and/or nanopillars. It is for example possible that at least part of at least one contact surface comprises a repeated pattern of nanowires and/or nanopillars. It is also imaginable that at least part of at least one contact surface comprises a randomized orientation of nanowires and/or nanopillars. The use of nanowires and/or nanopillars results in a significantly enlarged contact surface.
This will positively contribute to the effectiveness of the filtering particles exposed at the contact surface. lt is possible that at least part of contact surface is formed by the outer surface of at least part of the nanowires and/or nanopillars. At least part of the nanowires and/or nanopillars, if applied, could mimic the function of the nasal mucous membranes and/or the nasal hairs.
It is beneficial if at least part of the filtering particles comprises activated carbon.
The activated carbon particles could adsorb part of the pollutants of the inhaled air, such as volatile organic compounds and/or chemical contaminants. However, the use of activated carbon could also positively contribute to neutralizing of (undesired) odors. Activated carbon particles benefit of a porous structure and a relatively large surface area.
The embodiment wherein at least part of the filtering particles comprise silver particles, in particular silver nanoparticles and wherein at least part of the filtering particles comprise activated carbon is specifically effective due to the different filtering effects of the silver particles and the activated carbon particles. it is imaginable that at least part of the filtering particles comprise silver nanoparticles and that at least part of the filtering particles comprise activated carbon. In such embodiment, it is possible that the weight ratio of silver nanoparticles to activated carbon particles is 50:50. It is also possible that the composite material comprises more silver nanoparticles than activated carbon nanoparticles in particular in weight percentage, or vice versa. The average diameter of at least part of the filtering particles could for example be in the range of 0.1 to 100 nm or in the range of 0.1 to 10 um. The desired particle size dependents for example on the type of filtering particle and/or the intended target pathogens and/or particles which are to be neutralized by the use of the device.
Preferably, at least one composite material comprises at least 5 wt% of filtering particles, preferably at least 10 wt% of filtering particles, more preferably at least 15 wit% of filtering particles. It is for example possible that at least one composite material comprises in the range of 5 to 90 wt% of filtering particles, in particular in the range of 25 to 50 wt%, more in particular in the range of 30 to 40 wt%.
However, it is also conceivable that at least one composite material comprises in the range of 60 to 80 wt% or in the range of 70 to 75 wt%.
It is possible that the device according to the present invention comprises multiple contact surfaces. lt is possible that the device comprises a combination of the described contact surfaces according to the invention. It is also conceivable that the device comprises at least one primary contact surface which is configured to be in contact with inhaled air and at least one secondary contact surface which is configured to be in contact with the inner surface of a nostril. It is possible that at least one primary contact surface differs from at least one secondary contact surface.
The device may comprising at least one air channel for inhaled and/or exhaled air. it is also possible that at least one part of at least one insertable body defines and/or comprises at least one air channel, in particular for inhaled and/or exhaled air. It is also possible that the device, and in particular at least one insertable body comprises multiple air channels. At least part of at least one air channel may comprise at least one contact surface. it is also possible that at least one contact surface defines at least one air channel.
At least one air channel could for example a substantially elongated air channel. it is also possible that at least part of at least one air channel is substantially straight.
In a possible embodiment, at least part of at least one air channel is non-linear.
At least part of at least one air channel being non-linear could improve airflow distribution and result in enhanced contact with the filtering particles. It is for example possible that at least part of at least one non-linear air channel defines a twisted, turned and/or branched path. it is possible that at least part of at least one insertable body comprises a spiral shape. itis also possible that at least part of at least one insertable body comprises a spiral. At least part of at least one insertable body being defined by or comprising a spiral shape can have a beneficial effect to the filtering effect of the device. The inhaled air will have a longer pathway though the nostril, which may also have a positive effect on the contact between the inhaled air and the contact surface.
In a beneficial embodiment, the device comprises at least one particulate filter. It is for example possible that at least one particulate filter is attached to and/or received within at least part of at least one insertable body. At least one filter is preferably attached and/or connected to at least one insertable body in an adhesion free manner. It is also possible that the device comprises a plurality of particulate filters. It is for example possible that multiple filters are applied, wherein at least two filters, and preferably each filter has a different target particle and/or pathogen. At least one particulate filter may comprise a structured surface. It is also possible that at least one particulate filter comprises a mesh or a mesh structure. it is for example possible that at least one filter is positioned within at least one air channel. It is also possible that at least one filter encloses at least part of at least one air channel. It is even conceivable that at least one filter defines at least one air channel. It is possible that at least one filter fulfils a membrane function. The device, and in particular at least one insertable body, comprises at least one valve.
Atleast one valve could be configured to separate an air inlet and an air outlet. The air inlet could be configured for guidance of inhaled air where the air outlet could be configured for the guidance of exhaled air. At least one valve could for example be positioned at a distal end of at least one air channel.
In a further possible embodiment, the device comprises at least one high-efficiency particulate air (HEPA) filter. Applying at least one HEPA filter could further contribute to an enhanced filtration efficiency by providing filtration of allergens, (fine) particles, bacteria, viruses and/or fungi. At least one particulate filter and/or
HEPA filter is preferably retained within at least part at least one insertable body. It is also possible that at least one filter is clampingly engaged within at least part of at least one insertable body. The filter(s) are in particular configured such that the device is free of loose particles as these could be harmful to the user.
The device may comprise at least one electrostatic filter, preferably at least one powered electrostatic filter and/or at least one electrostatically charged filter. This electrostatic filter may comprise at least one electrostatically charged or chargeable mesh and/or non-woven fabric which is preferably configured to capture polien and/or other particulate matter. As indicated above, the electrostatic filter may be precharged during the production process and/or may be actively charged by means of at least one power source, such as a battery, of the device. This charge can be either positive or negative, depending on the specific design of the filter.
The key principle is that the particles, such as pollen. are ionized by applying a charge, and then these charged particles, such as pollen are attracted to oppositely charged collection plates or meshes within the filter. It is imaginable that in an embodiment of the device, wherein one or more electrostatic filters are used, particles, such as pollen, are given a positive charge and are subsequently attracted to a negatively charged collection plate of at least one electrostatic filter (or vice versa). In case the electrostatic filter comprises at least one mesh or fabric, this mesh or fabric preferably comprises openings, preferably less than 50 micron, more preferably less than 30 micron, to trap tiny particles like pollen, dust, and other airborne allergens and/or liquid (droplets).
Electrostatic filters are preferably constructed from materials that effectively create and maintain an electrostatic charge, ensuring efficient particle capture and filtration, which includes, for example, metal meshes or grids, typically made from lightweight, corrosion-resistant aluminum or durable stainless steel, both known for their excellent conductivity. Synthetic fibers such as polypropylene and polyethylene terephthalate (PET) could also be used due to their ability to hold an electrostatic charge and their resistance to chemicals and moisture. lonizing wires, crucial for generating the electrostatic charge, are often made from tungsten or stainless steel for their high melting points and durability. Preferably each electrostatic filter comprises a filter frame constructed from a dielectric material like plastic to provide insulation and structural support, with epoxy resins used for coating or bonding components to enhance insulation and durability. Preferably, each electrostatic filter comprises at least one collecting plate, designed to attract and hold charged particles, which could, for example, be made from at a conductive metal, like aluminum or stainless steel. This combination of conductive and dielectric materials ensures the filter's effectiveness, durability, and optimal performance in various applications.
In a preferred embodiment of the invention, the device comprises at least one sensor, preferably a plurality of sensors, configured to collect data, wherein a portion of the sensor data is preferably indicative of at least one characteristic of the air inhaled and/or exhaled by the user, and/or indicative of an environment related characteristic in which the user is present. At least one sensor may be positioned adject to or within at least one flow-through filter (if applied) of the device and/or may be positioned remotely from said flow-through filter (if applied).
Examples of said flow-through filters, in particular flow-through air filters, have been described above. Additionally or alternatively, at least one flow-through filter may be a moisture filter (liquid filter). In case a plurality of sensors is used said plurality of sensors may be configured to collect the sensor data at different predetermined sampling frequencies. Preferably, the device comprises at least one processor to analyze at least a part of the collected sensor data. The processor may be configured to effect operation of at least one sensor based on the analyzed sensor data, so as to reduce an impact of one or more elements on the user's health. The processor may be configured to perform one or more of the following steps: (1) calibrate at least one sensor against a baseline sensor reference; (2) check whether at least one sensor is operating normally or whether the sensor is defective; or (3) correct for sensor drift, error or bias. The processor may be configured to analyze the sensor data by cross-checking an accuracy of each set of sensor data against other different types of sensor data. The processor may be configured to analyze the sensor data by correlating sensor data from different sources. The processor may configured to assign weights to the sensor data based on an accuracy and/or inherent sensing characteristics of each of the plurality of sensors. The processor may be configured to analyze the sensor data using statistical methods. The processor may be configured to analyze the sensor data by combining different sets of sensor data in a manner that compensates for the deficiencies of individual sensors or type of sensors. Examples of types of sensors may include inertial sensors (e.g., accelerometers, gyroscopes, and/or gravity detection sensors, which may form inertial measurement units (IMUs)), location sensors (e.g., global positioning system (GPS) sensors, mobile device transmitters enabling location triangulation), heart rate monitors, external temperature sensors, skin temperature sensors, capacitive touch sensors, sensors configured to detect a galvanic skin response (GSR), vision sensors (e.g., imaging devices capable of detecting visible, infrared, or ultraviolet light, such as cameras), proximity or range sensors (e.g., ultrasonic sensors, lidar, time-of-flight or depth cameras), altitude sensors, attitude sensors {e.g., compasses), pressure sensors (e.g., barometers), humidity sensors, vibration sensors, audio sensors (e.g., microphones), and/or field sensors (e.g., magnetometers, electromagnetic sensors, radio sensors).
Preferably, the device comprises at least one communication module to receive data from and/or transfer data, preferably wirelessly, to at least one external device, such as a smartphone or tablet. This allows, for example, sensor data to be analyzed using a variety of devices in a variety of locations. For instance, the sensor data may be analyzed on a user's mobile device, such as a user's smartphone, tablet computer, laptop computer, or any other portable electronic device. The sensor data may be analyzed on a user's wearable device, such as a user's smartwatch. The sensor data may be analyzed at a remote server. The remote server may further perform aggregation of sensor data for multiple users within the same geographic location or across different geographic locations.
The aggregated sensor data may allow for the creation of crowd-sourced pollution data in a variety of geographic locations. The transmission may be via a wired communication channel. The transmission may be via a wireless communication channel. The wireless communication may be via Bluetooth communication. The wireless communication may be via Wi-Fi communication. The wireless communication may be via any other wireless communication known to one having skill in the art.
Preferably, the device comprises at least one battery, in particular at least one rechargeable battery, connected to at least one electronic component, such as a sensor and/or processor and/or communication unit, for power said at least one electronic component. Said rechargeable battery preferably is a lithium ion battery (Li-ion battery). More preferably, said lithium ion battery comprises at least one anode composed of silicon to significantly increase the energy density and specific capacity of the battery, and hence the operational use time of the device as such.
Preferably, the device comprises at least one electronic component, such as a sensor and/or processor and/or communication unit and/or battery, and at least one filter, in particular at least one moisture filter, located upwardly (nose inwardly) with respect to said at least one electronic component. Additionally or alternatively, the device comprises at least one electronic component, such as a sensor and/or processor and/or communication unit and/or battery, and at least one filter, in particular at least one air filter and/or liquid filter, located downwardly (nose outwardly) with respect to said at least one electronic component.
Possibly, at least one polymer comprises polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), polystyrene (PS), ABS (acrylonitrile butadiene styrene), PU (polyurethane), polyamides (PA), acrylonitrile- styrene-butyl acrylate (ASA), polyvinylidene fluoride (PVDF) and/or ethylene vinyl alcohol copolymers (EVOH). It is also imaginable that at least one composite material comprises a combination of at least two of these polymers. Any of said polymers could be applied in combination with any of the described filtering particles. The polymer may be mixed with at least one inert filler, such as an inorganic filler, like chalk or lime.
In a beneficial embodiment, at least part of at least one insertable body is deformable and/or flexible. This will enhance the ease of use of the device and the comfort of use. It is possible that at least part of the insertable body can be compressed such that the insertable body is easier to insert. Once positioned within the nostril, the insertable body could expand, or return to or towards its initial shape. This might enable that, during use, the insertable body is positioned within the nostril thereby exerting an outward force such that the insertable body is retained in place. At least part of at least one insertable body may have a widening effect to the nostril. This may positively contribute to the ease of breathing for the user. Further, at least part of the deformable body being deformable and/or flexible will enhance the adaptability of the device to facial movements, thereby enhancing the comfort of use. Preferably, at least part of at least one insertable body is deformable between at least one unfold configuration and at least one compressed configuration. Preferably, the volume defined by at least one insertable body is larger in an unfold configuration than the volume defines by said at least one insertable body in a compressed configuration. It is for example possible that a user needs to actively adjust the at least one insertable body to a compressed configuration and that upon release thereof, the at least one insertable body returns to an initial, unfold configuration.
In a possible embodiment, at least part of at least one insertable body is flexible. It is for example imaginable that at least one insertable body comprises at least one flexible leg. In a further possible embodiment, at least one insertable body comprises at least two flexible legs. At least two flexible legs may define a U-shape and/or a V-shape. It is for example possible that at least two legs are diverging. It is for example possible that the device comprises at least two flexible legs which are mutually connected and wherein said at least two legs are displaceable between at least one unfold configuration and at least one compressed configuration. Such embodiment benefits of a relatively simple and minimalistic configuration, which enhances the ease of use and minimally affects the air pathway. Such configuration will also prevent that the device negatively interferes with normal nasal functions, such as sneezing, smelling, and/or clearing mucus from the nasal passages. This interference can be bothersome and may affect overall comfort.
It is possible that at least two legs are mutually connected via at least one balancing element and/or at least one stabilizing element. Such element could enable better co-action between the legs. The use of an additional balancing element and/or stabilizing element could also result in a larger surface area of the at least one contact surface. At least one balancing element and/or at least one stabilizing element could for example be flexible and/or deformable. it is conceivable that at least part of at least one insertable body is substantially rigid. It is for example possible that at least part of the insertable body is non- deformable. At least part of at least one insertable body being substantially rigid can enhance the structural support and/or stability of the device. This could enable maintaining effective positioning and retaining of the device within the nostril(s) during use. It is for example possible that the shape of at least part of the insertable body is custom made for a specific user.
In a preferred embodiment, the device according to the invention comprises at least two insertable bodies. A first insertable body can be configured to be inserted in a first nostril, where a second insertable body can be configured to be inserted in a second nostril. The effectivity of the device can be significantly enhanced in case two insertable bodies are present. It is conceivable that the shape of the insertable bodies is specifically adapted for being inserted in a left or right nostril. The insertable bodies can for example be symmetrical and/or mirror symmetrical. It is also imaginable that the insertable body are substantially identical. Preferably each insertable body comprises at least one contact surface configured to be in contact with inhaled air, and preferably at least one part of each insertable body is made of at least one composite material comprising at least one polymer and a plurality of filtering particles, wherein at least part of the filtering particles is exposed at at least part of the at least one contact surface. lt is possible that at least two insertable bodies are mutually connected or connectable via at least one bridge element. The use of at least one bridge element could contribute to the stability of the device during use. The bridge element could also enable alignment and/or controlled positioning of the insertable bodies within the nostrils. At least one bridge element could be made of at least one composite material. This can be the same composite material as the composite material of the insertable bodies. In yet another possible embodiment, it is also conceivable that at least two insertable bodies are mutually connected or connectable via at least one magnetic connection. It is possible that at least two insertable bodies are separate and/or individual insertable bodies.
It is possible that at least one insertable body is made of a single piece. lt is also possible that the device as such is made of a single piece. It is for example possible that at least one insertable body, or the device, is made via injection molding. The device and/or insertable body being made of a single piece could prevent that parts get loose and may dangerously be inhaled. Such embodiment would also be easier to clean.
The invention also relates to a device for purifying inhaled air, comprising at least one insertable body configured to be inserted into a nostril, wherein at least one insertable body comprises at least one contact surface configured to be in contact with inhaled air. Preferably, at least one part of at least one insertable body is made of at least one composite material comprising at least one polymer and a plurality of filtering particles, wherein preferably at least part of the filtering particles is exposed at at least part of the at least one contact surface. The embodiment could be used in combination with any of the described embodiments.
The invention also relates to a method of manufacturing a device for purifying inhaled air, in particular according to the present invention, the method comprising the steps of providing at least one composite material comprising at least one polymer and a plurality of filtering particles, and molding said composite material into at least one insertable body which configured to be inserted into a nostril, such that at least one insertable body comprises at least one contact surface configured to be in contact with inhaled air, wherein at least part of the filtering particles is exposed at at least part of the at least one contact surface, preferably wherein at least part of the filtering particles comprise silver nanoparticles and/or wherein at least part of the filtering particles comprise activated carbon.
The method may comprise the step of dispersing at least part of the filtering particles within at least one polymer material. It is also possible that the method includes the step of coating at least part of at least one contact surface with filtering particles.
The invention will be further elucidated by means of non-limiting exemplary embodiments illustrated in the following figures, in which: - figures 14 and 1b show a first possible embodiment of a device according to the invention; - figure 2 shows a second possible embodiment of a device according to the invention; - figures 3a-3b show a third possible embodiment of a device according to the invention; - figures 4a and 4b show a fourth possible embodiment of a device according to the invention; - figures 5a and 5b show a fifth possible embodiment of a device according to the invention; - figure 6 shows a sixth possible embodiment of a device according to the invention; and - figure 7 shows a seventh possible embodiment of a device according to the invention.
Within these figures, similar reference numbers correspond to similar or equivalent elements or features.
Figures 1a and 1b show a first possible embodiment of a device 100 according to the present invention. Figure 1a shows a cross sectional view whereas figure 1b shows a perspective view of the device 100. The device 100 is configured for purifying inhaled air and comprises an insertable body 101 configured to be inserted into a nostril. The insertable body 101 comprises a contact surface C configured to be in contact with inhaled air. It is preferred that at least one part of the insertable body 101 is made of at least one composite material comprising at least one polymer and a plurality of filtering particles 102. As can be seen in the schematical representations of the device 100, at least part of the filtering particles 102 is exposed at at least part of the contact surface C. However, it is conceivable that the filtering particles 102 are in practice not visible with the naked eye. At least part of the filtering particles 102 preferably comprise silver nanoparticles and/or activated carbon. In the shown embodiment, the device 100, and in particular the insertable body 101 comprises two flexible legs 103. The figures show an initial and unfold state of the device 100, wherein the flexible legs 102 define may define a U- shape and/or a V-shape. The legs 103 are diverging and can be flexed towards each other as indicated with the arrows. The device 100 further comprises a balancing element 104 which mutually connects the legs 103 and increases the surface area of the contact surface C.
Figure 2 shows a further possible embodiment of a device 200 according to the present invention when in use. The figure shows a perspective view from a bottom side of the nose N of a user using the device 200. The device 200 as shown comprises two insertable bodies 201 which are mutually connected via a bridge element 204. The device 200 is made of a single piece. At least part of the he bridge element 204 is during use positioned outside of the nostrils of the user. The device 200 in particular comprises two insertable bodies 101 as seen in figures 1a and 1b. It can be seen that the device 200 fits to the anatomical shape of the nostrils and that the air passage of the nostrils is not affected by the device 200.
The device 200 enables that a good contact between the filtering particles and the inhaled air can be achieved.
Figures 3a and 3b show a third possible embodiment of a device 300 according to the present invention. Figure 3a shows a perspective view of the device 300 in an assembled configuration, figure 3b shows the device 300 in an exploded view. The device comprises an insertable body 301 in combination with a particulate filter 305. The particulate filter 305 comprises a structured surface which increases the contact area with inhaled air and it increases the air flow route resulting in an enhanced filtering effect. In the shown embodiment, the particulate filter 305 defines an air channel 306. In the shown embodiment, the insertable body 301 has a ring shape. The insertable body 301 can be releasably connected to the particulate filter 305 via mechanical coupling means 307. Figure 3c shows schematically how the air flow can be enhanced by a device 300 as shown in figures 3a and 3b. Figure 3c indicates the pathway of inhaled and/or exhaled air through and along the structured particulate filter 305, from a cross sectional point of view.
Figures 4a and 4b show a fourth possible embodiment of a device 400 according to the present invention. The configuration of the device 400 has overlap with the device 100 as shown in figures 1a and 1b, with the addition that at least part of the contact surface of the insertable body comprises nanowires 408. The nanowires 408 could also be referred to as nanopillars. It can be said that the insertable body 401 comprises a structured contact surface. Figure 4a shows a cross sectional view of the device 400 and figure 4b shows a perspective view. Each figure shows a detailed view of part of the device 400 wherein the nanowires 408 are schematically shown. In the shown embodiment, part of at least one contact surface comprises a repeated pattern of nanowires 408. Due to the enlarged surface area, the nanowires 408 will have a positive effect on the filtering capacity of the device 400.
Figures 5a and 5b show a fifth possible embodiment of a device 500 according to the present invention. Figure 5a shows a cross sectional view and figure 5b shows a perspective view. The device 500 comprises an insertable body 501 which encloses a particulate filter 505, in particular a HEPA filter 505. The insertable body 501 is configured to follow the shape of a nostril. The filter 505 is received within the inner volume of the insertable body. The filter 505 will enable actual filtering of particles from the inhaled air whereas the composite material of which at least part of the insertable body 501 is made will neutralize and/or purify at least part of the inhaled air. It is possible that at least part of at least one contact surface of the insertable body 501 is coated with filtering particles.
Figure 6 shows a sixth possible embodiment of a device 600 according to the invention in an exploded view. The device 600 comprises multiple filters 605a, 605b, 605c wherein each filter has a different target pathogen and/or particle type.
In the shown embodiment, the insertable body 601 is a modular insertable body which comprises multiple insertable body parts 601a, 601b, 601c. The insertable body parts 6014, 601b, 601c can be mutually connected.
Figure 7 shows a seventh possible embodiment of a device 700 according to the present invention. The insertable body 701 and particulate filter 705 define an air channel 706. In the shown embodiment, the device 700 and in particular the insertable body 701 is substantially tubular. The insertable body 701 encloses the particulate filter 705. The particular filter 705 is thereby positioned at a distance from the insertable body 701 such that an air pathway is present between the particulate filter 705 and the insertable body 701. The particulate filter 705 as shown in this embodiment comprises a mesh. The device 700 further comprises a valve 709 which is configured to guide and/or separate the air flows of inhaled air and exhaled air. The valve 709 is positioned at a distal end of the primary air channel 706a. A secondary air channel 706b is defined by the area between the insertable body 701 and the particulate filter 705. When in use, the device 700 is positioned with in a nostril. Inhaled air will be guided through the filter 705 and therefore arrive in the secondary air channel 706b. The valve 709 will stay closed during inhaling of air. When the user exhales, the air pressure will cause the valve 709 to displace, thereby opening the primary air channel 706a. The valve 709 is preferably configured such that a relatively small flow of air already enables opening of the valve 709, such that the user does not experience resistance during exhaling. it will be clear that the invention is not limited to the exemplary embodiments which are illustrated and described here, but that countless variants are possible within the framework of the attached claims, which will be obvious to the person skilled in the art. In this case, it is conceivable for different inventive concepts and/or technical measures of the above-described variant embodiments to be completely or partly combined without departing from the inventive idea described in the attached claims.
The verb ‘comprise’ and its conjugations as used in this patent document are understood to mean not only ‘comprise’, but to also include the expressions ‘contain’, ‘substantially contain’, "formed by' and conjugations thereof.
Claims (31)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2037701A NL2037701B1 (en) | 2024-05-15 | 2024-05-15 | Device for purifying inhaled air |
| PCT/NL2025/050227 WO2025239774A1 (en) | 2024-05-15 | 2025-05-14 | Device for purifying inhaled air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL2037701A NL2037701B1 (en) | 2024-05-15 | 2024-05-15 | Device for purifying inhaled air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL2037701B1 true NL2037701B1 (en) | 2025-11-25 |
Family
ID=92792662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL2037701A NL2037701B1 (en) | 2024-05-15 | 2024-05-15 | Device for purifying inhaled air |
Country Status (2)
| Country | Link |
|---|---|
| NL (1) | NL2037701B1 (en) |
| WO (1) | WO2025239774A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746200A (en) * | 1990-10-19 | 1998-05-05 | Draenert; Klaus | Trabecula nasal filter having both macropores and micropores |
| US20180304108A1 (en) * | 2017-04-20 | 2018-10-25 | Arch Holdings, Lp | Nasal filtration system |
| US20200261670A1 (en) * | 2019-02-20 | 2020-08-20 | Resprana, Inc. | Nasal filter pod |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8833369B2 (en) * | 2004-03-19 | 2014-09-16 | Airware, Inc. | Breathing air filtration devices |
| KR20160079412A (en) * | 2014-12-26 | 2016-07-06 | 박남준 | Nose mask for avoiding inhaling impurities in air |
| CN204699271U (en) * | 2015-06-23 | 2015-10-14 | 章迅 | Cone bucket type filters nasal obstruction |
| BR112018015701A2 (en) * | 2016-02-01 | 2019-02-19 | Advanced Ventilation Applications, Inc. | systems and methods for respiratory health management |
| WO2020091243A1 (en) * | 2018-10-31 | 2020-05-07 | 주식회사 엘지생활건강 | Nose mask |
| CN117813138A (en) * | 2021-07-30 | 2024-04-02 | 王雷 | Nose filter |
-
2024
- 2024-05-15 NL NL2037701A patent/NL2037701B1/en active
-
2025
- 2025-05-14 WO PCT/NL2025/050227 patent/WO2025239774A1/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5746200A (en) * | 1990-10-19 | 1998-05-05 | Draenert; Klaus | Trabecula nasal filter having both macropores and micropores |
| US20180304108A1 (en) * | 2017-04-20 | 2018-10-25 | Arch Holdings, Lp | Nasal filtration system |
| US20200261670A1 (en) * | 2019-02-20 | 2020-08-20 | Resprana, Inc. | Nasal filter pod |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2025239774A1 (en) | 2025-11-20 |
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