Scavenging device for an aerosol mask

Abstract

Devices, systems, and techniques are described for scavenging a respiratory aerosol that may be expelled within an aerosol mask, for example, when a patient coughs, sneezes, or breathes while wearing the mask. An example scavenging device includes a suction line interface, a suction arm extending from the suction line interface, and a suction member disposed at an end of the suction arm. The suction member includes at least one vent configured to suction a respiratory aerosol from within an aerosol mask.

Description

SCAVENGING DEVICE FOR AN AEROSOL MASK

[0001] This application claims the benefit of U.S. Provisional Patent Application Serial No. 63 / 621,362, filed January 16, 2024, the entire content of which is incorporated herein by reference.TECHNICAL FIELD

[0002] This disclosure relates to aerosol masks, and, more specifically, scavenging devices for aerosol masks.BACKGROUND

[0003] An aerosol mask may be used to administer a nebulizer treatment, oxygen support, or other aerosolization treatment. A respiratory aerosol may be expelled within an aerosol mask when a patient coughs, sneezes, or breathes while wearing the mask (e.g., while the patient is undergoing an aerosolization treatment). Respiratory aerosol may contain infectious materials (e.g., viral particles) that can leak out and expose healthcare providers and others to contagion risks. Consequently, respiratory and non-respiratory treatments may be performed under stringent provider mask requirements and in specialized, negative airflow rooms.SUMMARY

[0004] In general, this disclosure is directed to devices, systems, and techniques for scavenging a respiratory aerosol that may be expelled within an aerosol mask, for example, when a patient coughs, sneezes, or breathes while wearing the mask. The devices, systems, and techniques of this disclosure may create and maintain environmental conditions appropriate to care for patients with aerosolizing infectious diseases (e.g. influenza, COVID- 19, SARS, MERS, etc.), with less stringent provider mask requirements and without needing to be in a negative airflow room. In examples described herein, a scavenging device is integrated within or attached to an aerosol mask and configured to actively scavenge (e.g., suction or otherwise collect) a respiratory aerosol that is released within the mask. The scavenging device may prevent respiratory aerosol from leaking out of the mask and exposing others (e.g., healthcare providers, caregivers, members of the public, etc.) to potentially infectious materials. The scavenging device may also prevent respiratory aerosol from accumulating within the mask and causing respiratory obstruction or discomfort to the patient.

[0005] In one example, a scavenging device includes a suction line interface, a suction arm extending from the suction line interface, and a suction member disposed at an end of the suction arm. The suction member includes at least one vent configured to suction a respiratory aerosol from within an aerosol mask.

[0006] In another example, a system includes a scavenging device configured to suction a respiratory aerosol from within an aerosol mask. The system further includes a mouthpiece configured to deliver an aerosolization treatment within the aerosol mask.

[0007] In another example, a method includes administering, with an aerosol mask, an aerosolization treatment. The method further includes suctioning, with a scavenging device, a respiratory aerosol from within the aerosol mask.

[0008] The details of one or more examples of this disclosure are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of this disclosure will be apparent from the description and drawings, and from the claims.BRIEF DESCRIPTION OF DRAWINGS

[0009] FIG. 1 A is a perspective view of an example system including a scavenging device for an aerosol mask.

[0010] FIG. IB is another perspective view of the system of FIG. 1 A.

[0011] FIG. 1C is a zoomed-in perspective view of a portion of the system of FIG. 1A.

[0012] FIG. 2A is a perspective view of an example scavenging device for an aerosol mask.

[0013] FIG. 2B is another perspective view of the scavenging device of FIG. 2A.

[0014] FIG. 3 A is a perspective view of an example diagnostic plug for the scavenging device of FIG. 2 A.

[0015] FIG. 3B is another perspective view of the diagnostic plug of FIG. 3 A.

[0016] FIG. 4A is a perspective view of an example aerosol mask.

[0017] FIG. 4B is a perspective view of the aerosol mask of FIG. 4A coupled with the scavenging device of FIG. 2 A.

[0018] FIG. 5A is a perspective cross-sectional view of an example mouthpiece for an aerosol mask.

[0019] FIG. 5B is a perspective view of the mouthpiece of FIG. 5 A.

[0020] FIG. 6Ais a perspective view of an example scavenging device integrated within a mouthpiece.

[0021] FIG. 6B is a perspective view of an example system including the scavenging device of FIG. 6 A.

[0022] FIG. 6C is another perspective view of the system of FIG. 6B.

[0023] FIG. 7Ais a perspective view of an example scavenging device integrated within a mouthpiece.

[0024] FIG. 7B is a perspective view of an example system including the scavenging device of FIG. 7 A.

[0025] FIG. 7C is another perspective view of the system of FIG. 7B.

[0026] FIG. 8Ais a perspective view of an example scavenging device.

[0027] FIG. 8B is a perspective view of an example system including the scavenging device of FIG. 8 A.

[0028] FIG. 8C is another perspective view of the system of FIG. 8B.

[0029] FIG. 9Ais a perspective view of an example scavenging device.

[0030] FIG. 9B is a perspective view of an example system including the scavenging device of FIG. 9 A.

[0031] FIG. 9C is another perspective view of the system of FIG. 9B.

[0032] FIG. 10 is a flow chart illustrating an example technique for administering an aerosolization treatment while scavenging a respiratory aerosol.

[0033] Like reference characters denote like elements throughout the description and figures.DETAILED DESCRIPTION

[0034] This disclosure describes devices, systems, and techniques for scavenging a respiratory aerosol that may be expelled within an aerosol mask. In examples described herein, a scavenging device is integrated within or attached to an aerosol mask and configured to actively scavenge (e.g., suction or otherwise collect) a respiratory aerosol that is released within the mask. The scavenging device may prevent respiratory aerosol from leaking out of the mask and exposing others (e.g., healthcare providers, caregivers, members of the public, etc.) to potentially infectious materials. The scavenging device may also prevent respiratory aerosol from accumulating within the mask and causing respiratory obstruction or discomfort.

[0035] In some examples, the scavenging device is configured to be utilized with existing standard medical equipment (e.g., with an off-the-shelf aerosol mask). The scavenging devicemay scavenge respiratory droplets, spores, and other particles that are exhaled or otherwise expelled by a patient. In some examples, the scavenging device may also scavenge respiratory medications which require mask or N95 use while administering. In some examples, the scavenging device may function as a collection device that can collect infectious material to be analyzed using existing and future analysis techniques for diagnostic or other testing purposes. In some examples, the scavenging device can be attached to positive pressure airflow to implement a positive pressure mask, wearable in an infectious environment to protect the person wearing the mask.

[0036] The devices, systems, and techniques described herein may provide one or more benefits. For example, the devices, systems, and techniques described herein may enable concurrent medication administration and environment protection. As another example, the devices, systems, and techniques described herein may provide diagnostic options for captured viral particles. As another example, medication may be delivered more efficiently to patients rather than being scavenged prior to reaching the patient as may be the case in systems that employ, for example, direct suction to an aerosol mask.

[0037] FIGS. 1 A through 1C are perspective views of an example system 100 for scavenging a respiratory aerosol that may be expelled within an aerosol mask. In the example of FIG. 1A, system 100 includes a scavenging device 102 and an aerosol mask 104. Scavenging device 102 and aerosol mask 104 may be coupled together. For example, scavenging device 102 may be permanently or releasably attached to the aerosol mask 104 by interference fit coupling, use of Velcro, use of adhesive, use of fasteners, or any other coupling technique or combination of techniques. In other examples, scavenging device 102 and aerosol mask 104 may be integrated within a common structure. For example, scavenging device 102 and aerosol mask 104 may form portions of a continuous structure, such as an aerosol mask that includes a built-in scavenging device. The continuous structure may be formed by injection molding, additive manufacturing, fusing together of separately manufactured components, or any other manufacturing technique or combination of techniques.

[0038] System 100 further includes a suction line 106 (e.g., suction tube) coupled to scavenging device 102. Suction line 106 is configured to supply suction force to scavenging device 102 from a source of negative pressure airflow (not shown in the drawings), such as a vacuum or a pump. Suction line 106 may include or may be coupled to a filter 108 configured to capture particles, such as respiratory droplets or spores, that are suctioned out of aerosolmask 104 via scavenging device 102. In some examples, filter 108 is a high efficiency particulate air (HEP A) filter, a HEPA-like filter, a medical grade (e.g., H13 or higher) HEPA filter, or an ultra-low particulate air (ULPA) filter. In some examples, filter 108 includes or is replaced by a sample collection or analysis device. In other examples, the sample collection or analysis device may be placed along another portion of suction line 106, at an end of suction line 106, or anywhere between suction line 106 and a suction member of scavenging device 102.

[0039] FIG. IB is a perspective view of system 100 showing scavenging device 102 and aerosol mask 104 from another viewing angle. In the example of FIGS. 1 A and IB, aerosol mask 104 is configured to cover a user’s (e.g., patient’s) mouth and nose. Scavenging device 102 curves along at least one portion of an outer edge of aerosol mask 104. Scavenging device 102 may also curve along at least one portion of a surface of aerosol mask 104. For example, one or more suction arms of scavenging device 102 may extend along curved bottom and side portions of the outer edge of aerosol mask 104. In some examples, each suction arm includes one end that is fluidically coupled to a suction line interface and another end that is fluidically coupled to a suction member. The suction member may extend along a curved portion of the surface of aerosol mask 104 (e.g., from a side portion of a user’s face toward the user’s nose when the aerosol mask is worn by the user).

[0040] FIG. 1C is a zoomed in partial view of system 100 in accordance with an example of this disclosure. In the example of FIG. 1C, aerosol mask 104 includes an aerosolization interface 112. Aerosolization interface 112 is configured to be coupled to an aerosol source 114 (e.g., nebulizer, aerosolization canister, oxygen line, etc.). Aerosolization interface 112 can direct oxygen, a therapeutic mist, an aerosolized drug, or any other form of gaseous or aerosolized treatment into aerosol mask 104. In some examples, system 100 further includes a mouthpiece 110 coupled to aerosolization interface 112. Mouthpiece 110 can direct aerosolized substances delivered via aerosolization interface 112 directly into a user’s mouth. In some examples, mouthpiece 110 prevents aerosol of an aerosolization treatment from being suctioned out of aerosol mask 104 by scavenging device 102 before the aerosol is delivered to a user (e.g., patient) that is wearing aerosol mask 104. Nevertheless, scavenging device 102 may scavenge aerosol of the aerosolization treatment that is released into aerosol mask 104 because it is expelled by the user after delivery or due to excessive flow. This may help prevent exposure to the aerosolization treatment by health professionals or other care providers.

[0041] FIGS. 2A and 2B are perspective views of an example scavenging device 200. Scavenging device 200 is an example of scavenging device 102 of FIGS. 1 A through 1C. In the example of FIGS. 2A and 2B, scavenging device 200 includes a suction line interface 202. Scavenging device 200 further includes a suction arm 204 extending from suction line interface 202. Scavenging device 200 further includes a suction member 206 disposed at an end of suction arm 204. Suction line interface 202, suction arm 204, and suction member 206 may be integrated within a common structure. For example, suction line interface 202, suction arm 204, and suction member 206 may form portions of a continuous structure that is scavenging device 200. The continuous structure may be formed by injection molding, additive manufacturing, fusing together of separately manufactured components, or any other manufacturing technique or combination of techniques. In other examples, two or more components of suction line interface 202, suction arm 204, and suction member 206 may be coupled together. For example, two or more components of suction line interface 202, suction arm 204, and suction member 206 may be permanently or releasably attached to one another by interference fit coupling, use of adhesive, use of fasteners, or any other coupling technique or combination of techniques.

[0042] In some examples, scavenging device 200 further includes a second suction arm 204B with a second suction member 206B disposed at an end of second suction arm 204B. Second suction arm 204B and second suction member 206B are similar or identical to suction arm 204 and suction member 206, except that second suction arm 204B and second section member 206B may have reversed (e.g., flipped) orientation over a central axis of scavenging device 200. In some examples, the central axis extends through suction line interface 202. Second suction arm 204B and second suction member 206B may be configured to be on an opposite side of an aerosol mask (e.g., aerosol mask 104 of FIGS. 1A-1C or aerosol mask 400 of FIGS. 4A and 4B) relative to suction arm 204 and suction member 206.

[0043] Any description or example of suction arm 204 or suction member 206 is applicable to describing or providing an example of second suction arm 204B or second suction member 206B. However, suction arms 204 and 204B may be implemented according to different examples, and likewise, suction members 206 and 206B may be implemented according to different examples. Additionally, in some examples, scavenging device 200 may include suction arm 204 and suction member 206 without including second suction arm 204B or second suction member 206B.

[0044] Suction line interface 202 is coupled or configured to be coupled to a suction line (e.g., suction line 106) that supplies suction force to scavenging device 200 from a source of negative pressure airflow (not shown in the drawings), such as a vacuum or a pump. In some examples, suction line interface 202 is a tubular member. Suction line interface 202 may be configured for male-to-female or female-to-male coupling. In some examples, suction line interface 202 is a male connecting end configured to mate with a female connecting end of the suction line, or with an adapter (e.g., male-male coupler, male-female coupler, femalemale coupler, or female-female coupler) that fluidically couples suction line interface 202 to the suction line. In other examples, suction line interface 202 is a female connecting end configured to mate with a male connecting end of the suction line, or with an adapter (e.g., male-male coupler, or male-female coupler) that fluidically couples suction line interface 202 to the suction line.

[0045] Suction arm 204 extends between suction line interface 202 and suction member 206. In some examples, suction arm 204 is a tubular member that extends suction line interface 202 and suction member 206. Suction arm 204 is configured to fluidically couple suction line interface 202 and suction member 206 so that negative pressure airflow (e.g., suction force) is provided to suction member 206 from suction line interface 202 via suction arm 204. In some examples, suction arm 204 is curved between suction line interface 202 and suction member 206. For example, suction arm 204 may extend along a half of a U-shaped or parabola-shaped path. In some examples, suction arm 204 is configured to extend along curved bottom and side portions of the outer edge of an aerosol mask (e.g., aerosol mask 104 or aerosol mask 400).

[0046] Suction member 206 includes at least one vent 208 configured to suction a respiratory aerosol from within an aerosol mask (e.g., aerosol mask 104 or aerosol mask 400). In some examples, vent 208 is on an inner surface 212 of suction member 206. Inner surface 212 of suction member 206 is configured may be configured to extend across a curved portion of the aerosol mask. In some examples, inner surface 212 is curved so as to conform with the curved portion of the aerosol mask. Inner surface 212 may extend along across a curved portion of the surface of the aerosol mask (e.g., from a side portion of a user’s face toward the user’s nose when the aerosol mask is worn by the user).

[0047] In some examples, suction member 206 includes a flange 210 at least partially surrounding vent 208. In the example of FIGS. 2A and 2B, flange 210 forms a U-shape or horseshoe-shape around vent 208. Flange 210 may be at an angle with respect to innersurface 212 so that it functions as a mating member. In some examples, flange 210 is configured to mate with an opening of an aerosol mask (e.g., aerosol mask 104 or aerosol mask 400) by at least partially extending into the opening of the aerosol mask. The aerosol mask may include two openings (e.g., FIG. 4 A, openings 404) on either side of an aerosolization interface. In some examples, these two openings are mated with flanges of suction members 206 and 206B to secure scavenging device 200 onto the aerosol mask.

[0048] In some examples, suction member 206 further includes a sample port 214. Sample port 214 is fluidically coupled to vent 208. For example, sample port 214 may be located along a flow path extending between vent 208 and suction arm 204. In other examples, sample port 214 at another location within scavenging device 200. Sample port 214 provides access to aerosol or fluid suctioned through vent 208. In some examples, sample port 214 is configured to receive a diagnostic plug (e.g., diagnostic plug 300 of FIGS. 3A and 3B) that can be used to collect a sample from a respiratory aerosol that is suctioned from within an aerosol mask (e.g., aerosol mask 104 or aerosol mask 400) by scavenging device 200. Although one sample port (sample port 214) is shown in the example of FIGS. 2A and 2B, in other examples, scavenging device 200 may include a plurality of sample ports (e.g., as many as four sample ports configured to receive respective diagnostic plugs, as shown in FIG. 1C, or more).

[0049] FIGS. 3A and 3B are perspective views of an example diagnostic plug 300 for scavenging device 200. In the example of FIGS. 3A and 3B, diagnostic plug 300 includes a mesh 302 configured to collect a sample from a respiratory aerosol when the respiratory aerosol is suctioned through vent 208. For example, mesh 302 may include a plurality of cavities 306 formed within a plug body 304. In some examples, plug body 304 includes multiple layers 307, as shown in FIG. 3B. Cavities 306 may be formed by respective openings in layers 307. In some examples, the openings are staggered from one layer to the next such that the openings of one layer are offset from the openings of an adjacent layer. In some examples, cavities 306 in plug body 304 form a honeycomb structure for mesh 302.

[0050] Diagnostic plug 300 may further include a base 308 configured to support plug body 304. Base 308 may also be used to handle diagnostic plug 300. For example, base 308 may have a larger width or diameter than plug body 304 and may configured to remain external to sample port 214. On the other hand, plug body 304 including mesh 302 is configured to be inserted within sample port 214 so that mesh 302 may collect a sample (e.g., droplets, particles, etc.) from a respiratory aerosol when the respiratory aerosol is suctionedthrough vent 208. In some examples, mesh 302 may collect the sample within cavities 306 and / or in between layers 307 of plug body 304.

[0051] In some examples, diagnostic plug 300 further includes a connection interface 310 (e.g., gasket or threading) between base 308 and plug body 304. Connection interface 310 may be configured to hold diagnostic plug 300 tightly within sample port 214 so that respiratory aerosol does not leak out from between sample port 214 and diagnostic plug 300. In some examples, sample port 214 also includes a one-way valve to prevent respiratory aerosol from leaking out from sample port 214 when diagnostic plug 300 is removed from sample port 214. The one-way valve is configured to automatically close (e.g., plug or otherwise block off) sample port 214 when the diagnostic plug is removed from the sample port. This may allow for removal of diagnostic plug 300 to perform analysis on a sample collected via mesh 302 at any time, even if scavenging device 200 is in active use.

[0052] FIG. 4A is a perspective view of an example aerosol mask 400. Aerosol mask 400 is an example of aerosol mask 104 of FIGS. 1 A through 1C. In examples described herein, aerosol mask 400 can be an oxygen mask, a nebulizer mask, a suction mask, a personal protective equipment mask, or any other type of mask that covers the nose and mouth of the wearer to prevent environmental contamination from an infected wearer.

[0053] In the example of FIG. 4 A, aerosol mask 400 includes a flexible membrane 402 configured to cover a mouth and nose of a user (e.g., a patient). Flexible membrane 402 includes two openings 404 configured to be situated on either side of the user’s nostrils. In some examples, aerosol mask 400 includes one or more straps 408 configured to hold flexible membrane 402 onto the user’s face. Straps 408 may be configured to extend from side portions of flexible membrane 402 and wrap around the user’s head or ears. Aerosol mask 400 may further include an adjustable nose piece 406 coupled to a portion of flexible membrane 402. In some examples, adjustable nose piece 406 is configured to be molded to help conform a portion of flexible membrane 402 that is coupled to adjustable nose piece 406 to a shape of the user’s nose.

[0054] Aerosol mask 400 further includes an aerosolization interface 410. Aerosolization interface 410 is configured to be coupled to an aerosol source (e.g., nebulizer, aerosolization canister, oxygen line, etc.). Aerosolization interface 410 can direct oxygen, a therapeutic mist, an aerosolized drug, or any other form of gaseous or aerosolized treatment into aerosol mask 400. In some examples, a mouthpiece (e.g., mouthpiece 110 of FIG. 1C or mouthpiece 500 of FIGS. 5A and 5B) may be coupled to aerosolization interface 410. The mouthpiecemay be configured to direct aerosolized substances delivered via aerosolization interface 410 directly into a user’s mouth. In some examples, the use of a mouthpiece prevents aerosol of an aerosolization treatment from being suctioned out of aerosol mask 400 by a scavenging device (e.g., scavenging device 102 or scavenging device 200) before the aerosol is delivered to the user.

[0055] FIG. 4B is a perspective view of an example system including scavenging device 200 coupled to aerosol mask 400. In some examples, scavenging device 200 is configured to suction a respiratory aerosol from within aerosol mask 400 through openings 404. For example, suction members 206 and 206B may be coupled to or otherwise interfaced with openings 404. Suction members 206 and 206B include respective vents (e.g., vent 208) that are configured to suction respiratory aerosol expelled by a user (e.g., patient) from within aerosol mask 400. In some examples, suction members 206 and 206B include respective flanges (e.g., flange 210) that are configured to mate with openings 404 of aerosol mask 400. For example, the flanges may be at least partially inserted into openings 404 to secure scavenging device 200 to aerosol mask 400. When secured to scavenging device 200, aerosol mask 400 is spread out as a result of suction member 206 and suction member 206B pulling on openings 404 in opposite directions.

[0056] In other examples, scavenging device 200 may include suction arm 204 and suction member 206 without second suction arm 204B and second suction member 206B. In those examples, one of openings 404 that is not coupled suction member 206 may be plugged, or one of openings 404 may be excluded from aerosol mask 400.

[0057] FIGS. 5A and 5B are perspective views of an example mouthpiece 500 for the system of FIG. 4B. In the example of FIGS. 5A and 5B, mouthpiece 500 includes an inlet 502 and an outlet 504 connected by a flow path that includes one or more bends, or a serpentine structure. Inlet 502 is configured to be inserted within, over, or otherwise mated with aerosolization interface 410 of aerosol mask 400. The flow path is configured to direct aerosol or fluid of an aerosolization treatment that is delivered through aerosolization interface 410 from inlet 502 to outlet 504. Outlet 504 then directs the aerosol or fluid of the aerosolization treatment into a user’s mouth.

[0058] FIG. 6A is an example of a scavenging device 600 that includes a mouthpiece 608. In the example of FIG. 6 A, scavenging device 600 includes a suction member 602 that extends from a suction line interface 606. Scavenging device 600 further includes mouthpiece 608 coupled to suction member 602. In the example of FIG. 6A, mouthpiece 608 is attachedto an underside of suction member 602. Mouthpiece 608 may be permanently or releasably attached to suction member 602 by use of adhesive, use of fasteners, or any other coupling technique or combination of techniques. In other examples, suction member 602 and mouthpiece 608 may be integrated within a common structure. For example, suction member 602 and mouthpiece 608 may form portions of a continuous structure that is scavenging device 600. The continuous structure may be formed by injection molding, additive manufacturing, fusing together of separately manufactured components, or any other manufacturing technique or combination of techniques.

[0059] Suction member 602 includes at least one vent 604 configured to suction a respiratory aerosol from within an aerosol mask, such as aerosol mask 610 of an example system shown in FIGS. 6B and 6C. In some examples, vent 604 is oriented in a different direction than a flow path of mouthpiece 608 to avoid scavenging an aerosolization treatment before the treatment is delivered to a user (e.g., patient) that is wearing aerosol mask 610. For example, vent 604 is pointed in an opposite, or nearly opposite (e.g., within a 20% tolerance), direction than the outlet of mouthpiece 608.

[0060] Mouthpiece 608 may have a structure identical or similar to mouthpiece 500. For example, mouthpiece 608 includes an inlet and an outlet connected by a flow path that includes one or more bends, or a serpentine structure. The inlet is configured to be inserted within, over, or otherwise mated with an aerosolization interface of mask 610. The flow path is configured to direct aerosol or fluid of an aerosolization treatment that is delivered through the aerosolization interface from the inlet of mouthpiece 608 to the outlet of mouthpiece 608. The outlet of mouthpiece 608 then directs the aerosol or fluid of the aerosolization treatment into the user’s mouth.

[0061] FIG. 7A is an example of a scavenging device 700 that includes a mouthpiece 708. In the example of FIG. 7A, scavenging device 700 includes a suction member 702 that extends from a suction line interface 706. Scavenging device 700 further includes mouthpiece 708 coupled to suction member 702. In the example of FIG. 7A, mouthpiece 708 and suction member 702 are side by side. In some examples, mouthpiece 708 is situated between two suction members 702. Mouthpiece 708 may be permanently or releasably attached to suction member 702 by use of adhesive, use of fasteners, or any other coupling technique or combination of techniques. In other examples, suction member 702 and mouthpiece 708 may be integrated within a common structure. For example, suction member 702 and mouthpiece 708 may form portions of a continuous structure that is scavenging device 700. Thecontinuous structure may be formed by injection molding, additive manufacturing, fusing together of separately manufactured components, or any other manufacturing technique or combination of techniques.

[0062] Suction member 702 includes at least one vent 704 configured to suction a respiratory aerosol from within an aerosol mask, such as aerosol mask 710 of an example system shown in FIGS. 7B and 7C. In some examples, vent 704 is oriented in a different direction than a flow path of mouthpiece 708 to avoid scavenging an aerosolization treatment before the treatment is delivered to a user (e.g., patient) that is wearing aerosol mask 710. For example, vent 704 is pointed in an orthogonal, or nearly orthogonal (e.g., within a 20% tolerance), direction relative to the outlet of mouthpiece 708.

[0063] Mouthpiece 708 may have a structure identical or similar to mouthpiece 500. For example, mouthpiece 708 includes an inlet and an outlet connected by a flow path that includes one or more bends, or a serpentine structure. The inlet is configured to be inserted within, over, or otherwise mated with an aerosolization interface of aerosol mask 710. The flow path is configured to direct aerosol or fluid of an aerosolization treatment that is delivered through the aerosolization interface from the inlet of mouthpiece 708 to the outlet of mouthpiece 708. The outlet of mouthpiece 708 then directs the aerosol or fluid of the aerosolization treatment into the user’s mouth.

[0064] FIG. 8A is an example of a scavenging device 800 that provides suction about a perimeter of an aerosol mask. In the example of FIG. 8 A, scavenging device 800 includes a suction member 802 that defines at least a portion of an outer frame of scavenging device 800. Suction member 802 includes at least one vent 804 configured to extend at least partially along a perimeter of an aerosol mask, such as aerosol mask 810 of an example system shown in FIGS. 8B and 8C. Scavenging device 800 further includes a mask cover 806 that covers at least a portion (e.g., top half) of aerosol mask 810 when the scavenging device 800 is placed over aerosol mask 810. In some examples, mask cover 806 is configured to block, plug, or otherwise occlude openings that may be located around the nostril portions of aerosol mask 810.

[0065] Suction member 802 is fluidically coupled to a suction line interface of scavenging device 800. Suction member 802 is configured to suction a respiratory aerosol from aerosol mask 810 by applying suction force about a perimeter of aerosol mask 810, or at least a portion of said perimeter. In this manner, suction member 802 suctions respiratory aerosol that may otherwise leak from outer edge portions of aerosol mask 810. In someexamples, suction member 802 prevents respiratory aerosol from leaking out of aerosol mask 810, in addition to suctioning respiratory aerosol out of aerosol mask 810.

[0066] In FIG. 8C, the example system further includes mouthpiece 808. Mouthpiece 808 may have a structure identical or similar to mouthpiece 500. For example, mouthpiece 808 includes an inlet and an outlet connected by a flow path that includes one or more bends, or a serpentine structure. The inlet is configured to be inserted within, over, or otherwise mated with an aerosolization interface of mask 810. The flow path is configured to direct aerosol or fluid of an aerosolization treatment that is delivered through the aerosolization interface from the inlet of mouthpiece 808 to the outlet of mouthpiece 808. The outlet of mouthpiece 808 then directs the aerosol or fluid of the aerosolization treatment into the user’s mouth.

[0067] FIG. 9A is an example of a scavenging device 900 that provides suction within and about a perimeter of an aerosol mask. In the example of FIG. 9 A, scavenging device 900 includes a suction member 902 that defines at least a portion of an outer frame of scavenging device 900. Suction member 902 includes at least one vent 904 configured to extend at least partially along a perimeter of an aerosol mask, such as aerosol mask 912 of an example system shown in FIGS. 9B and 9C. Scavenging device 900 further includes a second suction member 906 that covers at least a portion of a surface of aerosol mask 912 when the scavenging device 900 is placed over aerosol mask 912. Second suction member 906 is configured to block, plug, or otherwise occlude openings that are located around the nostril portions of aerosol mask 912. Second suction member 906 includes one or more vents 908 oriented into aerosol mask 912 through the openings that are occluded by second suction member 906.

[0068] Suction members 902 and 906 are fluidically coupled to a suction line interface 910 of scavenging device 900. Suction member 902 is configured to suction a respiratory aerosol from aerosol mask 912 by applying suction force about a perimeter of aerosol mask 912, or at least a portion of said perimeter. In this manner, suction member 902 suctions respiratory aerosol that may otherwise leak from outer edge portions of aerosol mask 912. In some examples, suction member 902 prevents respiratory aerosol from leaking out of aerosol mask 912, in addition to suctioning respiratory aerosol out of aerosol mask 912. Suction member 906 is configured to suction respiratory aerosol out of aerosol mask 912 through one or more openings of aerosol mask 912, much like suction members 206 and 206B of scavenging device 200. In some examples, suction member 906 includes one or more flanges,like flange 210 of suction member 206, configured to secure one or more vents 908 of suction member 906 within openings of aerosol mask 912.

[0069] In FIG. 9C, the example system further includes mouthpiece 914. Mouthpiece 914 may have a structure identical or similar to mouthpiece 500. For example, mouthpiece 914 includes an inlet and an outlet connected by a flow path that includes one or more bends, or a serpentine structure. The inlet is configured to be inserted within, over, or otherwise mated with an aerosolization interface of aerosol mask 912. The flow path is configured to direct aerosol or fluid of an aerosolization treatment that is delivered through the aerosolization interface from the inlet of mouthpiece 914 to the outlet of mouthpiece 914. The outlet of mouthpiece 914 then directs the aerosol or fluid of the aerosolization treatment into the user’s mouth.

[0070] FIG. 10 is a flow chart illustrating an example technique 1000 for administering an aerosolization treatment while scavenging a respiratory aerosol. Technique 1000 of FIG. 10 is discussed in relation to the components of scavenging device 200 and aerosol mask 400 as discussed in connection with FIGS. 2A through 5B, but technique 1000 may be used with the components of any example scavenging device or aerosol mask of this disclosure (e.g., example devices described in connection with any of FIGS. 1 A through 9C).

[0071] In the example of FIG. 10, an aerosolization treatment is administered using aerosol mask 400 (1002). Aerosol mask 400 is placed over a user’s mouth and nose, and aerosolization interface 410 is coupled to an aerosol source (e.g., nebulizer, aerosolization canister, oxygen line, etc.). Aerosolization interface 410 may direct oxygen, a therapeutic mist, an aerosolized drug, or any other form of gaseous or aerosolized treatment from the aerosol source into aerosol mask 400. In some examples, a mouthpiece (e.g., mouthpiece 500) is coupled to aerosolization interface 410 and used to direct aerosol of the aerosolization treatment directly into the user’s mouth.

[0072] Scavenging device 200 suctions respiratory aerosol from within aerosol mask 400 (1004). For example, one or more suction members (e.g., suction members 206 and 206B) of scavenging device 200 may suction respiratory aerosol out of aerosol mask 400 through respective vents (e.g., vent 208) of the one or more suction members when suction force is applied to scavenging device 200 via suction line interface 202. In some examples, scavenging device 200 suctions respiratory aerosol from within aerosol mask 400 while the aerosolization treatment is being administered.

[0073] Optionally, a sample may be collected from the respiratory aerosol, or the sample (i.e., a portion of the respiratory aerosol) may be channeled for collection or analysis (1006). In some examples, the sample is collected with diagnostic plug 300. For example, diagnostic plug 300 may be inserted within sample port 214 of scavenging device 200. Diagnostic plug 300 collects sample particles within mesh 302 while the respiratory aerosol is being suctioned out of aerosol mask 400 by scavenging device 200. Diagnostic plug 300 is then removed from the sample port 214 so that the sample collected by mesh 302 can be analyzed for diagnostic or other testing purposes. In other examples, at least a portion of the suctioned respiratory aerosol is directed through a channel within scavenging device 200, or within a suction line that is coupled to scavenging device 200, wherein the channel includes or is operatively coupled with a sample collection or analysis device.

[0074] Any of the techniques described herein may be combined. Additionally, portions of techniques described herein may be removed, modified, replaced with functionally equivalent techniques, or combined with portions of other techniques described herein.

[0075] This disclosure includes the following non-limiting examples.

[0076] Example 1 : A scavenging device includes: a suction line interface; a suction arm extending from the suction line interface; and a suction member disposed at an end of the suction arm, the suction member including at least one vent configured to suction a respiratory aerosol from within an aerosol mask.

[0077] Example 2: The scavenging device of example 1, wherein the suction arm is curved between the suction line interface and the suction member.

[0078] Example 3: The scavenging device of example 1, wherein the suction member includes a curved inner surface configured to extend across a curved portion of the aerosol mask.

[0079] Example 4: The scavenging device of example 3, wherein the curved inner surface includes the at least one vent.

[0080] Example 5: The scavenging device of example 1, wherein the suction member includes a flange at least partially surrounding the at least one vent, wherein the flange is configured to mate with an opening of the aerosol mask by at least partially extending into the opening of the aerosol mask.

[0081] Example 6: The scavenging device of example 1, wherein the suction member includes a sample port.

[0082] Example 7: The scavenging device of example 1, further includes: a sample port within the suction member, wherein the sample port is fluidically coupled to the at least one vent; and a diagnostic plug configured to be inserted within the sample port.

[0083] Example 8: The scavenging device of example 7, wherein the diagnostic plug comprises a mesh configured to collect a sample from the respiratory aerosol when the respiratory aerosol is suctioned through the at least one vent.

[0084] Example 9: The scavenging device of example 7, wherein the sample port includes a one-way valve configured to automatically close the sample port when the diagnostic plug is removed from the sample port.

[0085] Example 10: The scavenging device of example 1, further includes: a second suction arm extending from the suction line interface; and a second suction member disposed at an end of the second suction arm, the second suction member including a second vent configured to suction the respiratory aerosol from within the aerosol mask.

[0086] Example 11 : The scavenging device of example 10, wherein the second suction arm and the second suction member are configured to be on an opposite side of the aerosol mask relative to the suction arm and the suction member.

[0087] Example 12: The scavenging device of example 1, wherein the aerosol mask is configured to deliver an aerosolization treatment.

[0088] Example 13: A system includes: a scavenging device configured to suction a respiratory aerosol from within an aerosol mask; and a mouthpiece configured to deliver an aerosolization treatment within the aerosol mask.

[0089] Example 14: The system of example 13, wherein the scavenging device and the mouthpiece are integrated within one structure.

[0090] Example 15: The system of example 14, wherein the scavenging device includes at least one vent oriented away from an opening of the mouthpiece.

[0091] Example 16: The system of example 13, wherein the scavenging device and the mouthpiece are separate structures.

[0092] Example 17: The system of example 13, wherein the scavenging device includes at least one vent configured to extend at least partially along a perimeter of the aerosol mask.

[0093] Example 18: A method including: administering, with an aerosol mask, an aerosolization treatment; and suctioning, with a scavenging device, a respiratory aerosol from within the aerosol mask.

[0094] Example 19: The method of example 18, wherein the aerosolization treatment is delivered through a mouthpiece to prevent aerosol of the aerosolization treatment from being suctioned out of the aerosol mask by the scavenging device.

[0095] Example 20: The method of example 18, further includes collecting, with a diagnostic plug inserted within a sample port of the scavenging device, a sample from the respiratory aerosol.

[0096] Various examples have been described. These and other examples are within the scope of the following claims.

Claims

WHAT IS CLAIMED IS:

1. A scavenging device, comprising: a suction line interface; a suction arm extending from the suction line interface; and a suction member disposed at an end of the suction arm, the suction member including at least one vent configured to suction a respiratory aerosol from within an aerosol mask.

2. The scavenging device of claim 1, wherein the suction arm is curved between the suction line interface and the suction member.

3. The scavenging device of claim 1, wherein the suction member includes a curved inner surface configured to extend across a curved portion of the aerosol mask.

4. The scavenging device of claim 3, wherein the curved inner surface includes the at least one vent.

5. The scavenging device of claim 1, wherein the suction member includes a flange at least partially surrounding the at least one vent, wherein the flange is configured to mate with an opening of the aerosol mask by at least partially extending into the opening of the aerosol mask.

6. The scavenging device of claim 1, wherein the suction member includes a sample port.

7. The scavenging device of claim 1, further comprising: a sample port within the suction member, wherein the sample port is fluidically coupled to the at least one vent; and a diagnostic plug configured to be inserted within the sample port.

8. The scavenging device of claim 7, wherein the diagnostic plug comprises a mesh configured to collect a sample from the respiratory aerosol when the respiratory aerosol is suctioned through the at least one vent.

9. The scavenging device of claim 7, wherein the sample port includes a one-way valve configured to automatically close the sample port when the diagnostic plug is removed from the sample port.

10. The scavenging device of claim 1, further comprising: a second suction arm extending from the suction line interface; and a second suction member disposed at an end of the second suction arm, the second suction member including a second vent configured to suction the respiratory aerosol from within the aerosol mask.

11. The scavenging device of claim 10, wherein the second suction arm and the second suction member are configured to be on an opposite side of the aerosol mask relative to the suction arm and the suction member.

12. The scavenging device of claim 1, wherein the aerosol mask is configured to deliver an aerosolization treatment.

13. A system, comprising: a scavenging device configured to suction a respiratory aerosol from within an aerosol mask; and a mouthpiece configured to deliver an aerosolization treatment within the aerosol mask.

14. The system of claim 13, wherein the scavenging device and the mouthpiece are integrated within one structure.

15. The system of claim 14, wherein the scavenging device includes at least one vent oriented away from an opening of the mouthpiece.

16. The system of claim 13, wherein the scavenging device and the mouthpiece are separate structures.

17. The system of claim 13, wherein the scavenging device includes at least one vent configured to extend at least partially along a perimeter of the aerosol mask.

18. A method, comprising: administering, with an aerosol mask, an aerosolization treatment; and suctioning, with a scavenging device, a respiratory aerosol from within the aerosol mask.

19. The method of claim 18, wherein the aerosolization treatment is delivered through a mouthpiece to prevent aerosol of the aerosolization treatment from being suctioned out of the aerosol mask by the scavenging device.

20. The method of claim 18, further comprising: collecting, with a diagnostic plug inserted within a sample port of the scavenging device, a sample from the respiratory aerosol.

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