Refillable session-oriented vaporizer devices and cartridges therefor

Abstract

Vaporizer cartridges for vaporizer devices are disclosed herein. The vaporizer cartridge includes a reservoir body with one or more channels, each channel forming a reservoir, and one or more end stops formed at a distal end of each reservoir and configured to balance fluid flow in each reservoir relative to one another. Vaporizer devices and vaporizer systems are also disclosed herein.

Description

REFILLABLE SESSION-ORIENTED VAPORIZER DEVICESAND CARTRIDGES THEREFOR CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The current application claims priority to U.S. Provisional Patent Application No.63 / 755,825 filed February 7, 2025, entitled “REFILLABLE SESSION-ORIENTED VAPORIZER DEVICES AND CARTRIDGES THEREFOR,” the disclosure of which is incorporated herein by reference in its entirety.TECHNICAL FIELD

[0002] The subject matter described herein relates to vaporizer cartridges and vaporizer devices using the same.BACKGROUND

[0003] Vaporizer devices, which can also be referred to as vaporizers, electronic vaporizer devices, or e-vaporizer devices, can be used for delivery of an aerosol (for example, a vapor-phase and / or condensed-phase material suspended in a stationary or moving mass of air or some other gas carrier) containing one or more active ingredients by inhalation of the aerosol by a user of the vaporizing device. For example, electronic nicotine delivery systems (ENDS) include a class of vaporizer devices that are battery powered and that can be used to simulate the experience of smoking, but without burning of tobacco or other substances. Vaporizer devices are gaining increasing popularity both for prescriptive medical use, in delivering medicaments, and for consumption of tobacco, nicotine, and other plant-based materials. Vaporizer devices can be portable, self-contained, and / or convenient for use.

[0004] In use of a vaporizer device, the user inhales an aerosol, colloquially referred to as “vapor,” which can be generated by an atomizer (e.g., heating element) that vaporizes (e.g., causes a liquid or solid to at least partially transition to the gas phase) a vaporizable material, which can be a liquid, a solution, a solid, a paste, a wax, and / or any other form compatible for use with a specific vaporizer device. The vaporizable material used with a vaporizer device can be provided within a vaporizer cartridge (for example, a separable part of the vaporizer device that contains vaporizable material) that includes an outlet (for example, a mouthpiece) for inhalation of the aerosol by a user.

[0005] To receive the inhalable aerosol generated by a vaporizer device, a user can, in certain examples, activate the vaporizer device by taking a puff, by pressing a button, and / or by some other approach. A puff as used herein can refer to inhalation by the user in a mannerthat causes a volume of air to be drawn into the vaporizer device such that the inhalable aerosol is generated by combining the vaporized vaporizable material with the volume of air.

[0006] However, such cartridge-based vaporizers typically do not have a session demarcation and / or do not give users feedback on when a smoking session is completed since the vaporizer devices typically contain enough vaporizable material for multiple sessions (i.e., the equivalent of multiple cigarettes). By comparison, a cigarette offers a single session experience with “natural stopping point” feedback to tire user.

[0007] Accordingly, vaporizer devices and / or vaporizer cartridges that address one or more of these issues are desired.SUMMARY

[0008] In certain aspects and implementations of the current subject matter, challenges associated with a lack of session demarcation and refilling of vaporizer cartridges can be addressed by inclusion of one or more of the features described herein or comparable / equivalent approaches as would be understood by one of ordinary skill in the art. Aspects of the current subject matter relate to vaporizer cartridges for use in a vaporizer device, vaporizer devices, and vaporizer systems.

[0009] In some implementations, one or more of the following features can optionally be included in any feasible combination.

[0010] In one exemplary implementation, a cartridge for a vaporizer device is provided. In some aspects, the cartridge includes a cartridge housing, a reservoir body positioned within the cartridge housing, a wick, and one or more ports. The reservoir body includes one or more channels, each of which forming a reservoir configured to store a vaporizable material. The reservoir body also includes one or more end stops formed at a distal end of each reservoir and configured to balance fluid flow in each reservoir relative to one another. The wick can be positioned at a distal end of the reservoir body and in fluid communication with each reservoir. The one or more ports can be formed through the cartridge housing and in fluid communication with each reservoir.

[0011] In some aspects, each reservoir is independent of another reservoir within the reservoir body. In some aspects, each reservoir is in fluid communication with at least one port and at least one end stop.

[0012] In some aspects, the vaporizer cartridge also includes one or more air vents formed through the cartridge housing and in fluid communication with each end stop. In certain aspects, the vaporizer cartridge also includes one or more overflow channels formed in thereservoir body, each of the one or more overflow channels providing fluid communication between each end stop and each air vent. In certain aspects, each of the one or more overflow channels is formed between a groove in an outer surface of the reservoir body and an inner surface of the cartridge housing.

[0013] In some aspects, the one or more ports are positioned on a first side of the cartridge housing. In some aspects, the one or more air vents are positioned on a second side of the cartridge housing, wherein the first side opposes the second side.

[0014] In some aspects, the cartridge housing also includes one or more openings aligned respectively with the one or more ports of the reservoir body. In certain aspects, the vaporizer cartridge also includes one or more valves, each valve at least partially inserted into a respective port of the cartridge housing and configured to selectively seal each of the one or more ports. In certain aspects, the one or more valves can be flat elastomeric valves or duckbill valves.

[0015] In some aspects, the reservoir body also includes one or more liquid feed channels formed through the reservoir body and providing the fluid communication between each reservoir and the wick.

[0016] In some aspects, each of the one or more channels is formed through the reservoir body, and each of the one or more channels forms a respective reservoir between opposing inner surfaces of the cartridge housing. In other aspects, each of the one or more channels forms the respective reservoir between an outer surface of the reservoir body and an inner surface of the cartridge housing.

[0017] In some aspects, each of the one or more channels extends along a longitudinal axis of the reservoir body and is substantially parallel to one another.

[0018] In some aspects, the reservoir body also includes a plurality of microfluidic features protruding from the reservoir body into each of the one or more fluid channels, wherein each of the plurality of the microfluidic features is spaced apart from an adjacent microfluidic feature. In certain aspects, each of the plurality of microfluidic features is substantially parallel to an adjacent microfluidic feature. In certain aspects, each of the plurality of microfluidic features has a substantially uniform protruding length. In certain aspects, each of the plurality of microfluidic features has varied protruding lengths. In certain aspects, the plurality of microfluidic features form constriction points along a length of the one or more channels, and wherein each constriction point has a smaller hydraulic diameter than a hydraulic diameter of a portion of the one or more channels between the constriction points. In certain aspects, each constriction point is defined by a plurality of projections extending into the one or more channels, wherein a first projection of the plurality of projections has a maximum width thatdiffers from a maximum width of a second projection of the plurality of projections. In some aspects, each of the plurality of projections has a varying shape. In some aspects, a distance between each of the plurality of microfluidic features is substantially uniform. In some aspects, a distance between each of the plurality of microfluidic features varies.

[0019] In some aspects, each of the one or more channels is formed in a serpentine shape extending along a longitudinal axis of the reservoir body. In some aspects, each reservoir is refillable via the one or more ports.

[0020] In some aspects, the vaporizer cartridge also includes an atomizer positioned within the cartridge housing and in contact with the wick. In certain aspects, the atomizer can include a heating element contacting at least a portion of the wick. In certain aspects, the heating element includes one or more tines contacting at least a portion of the wick. In some aspects, the atomizer also includes an atomizer housing positioned within the cartridge housing. In certain aspects, at least a portion of the wick and at least a portion of the heating element are disposed within the atomizer housing. In certain aspects, at least a portion of the heating element protrudes out of the atomizer housing. In some aspects, the atomizer housing includes one or more air inlets formed therethrough and configured to provide a path for air to enter an internal airflow path within the vaporizer cartridge.

[0021] In some aspects, the vaporizer cartridge also includes a vapor channel disposed therethrough, the vapor channel providing a fluid communication between the wick and an outlet of the vaporizer cartridge. In certain aspects, the vapor channel has a tapered crosssection. In some aspects, the reservoir body can also include a vapor outlet in fluid communication with the vapor channel. In certain aspects, at least a portion of the vapor channel is inserted into the vapor outlet. In certain aspects, the vapor channel includes a baffle configured to cause mixing of air and vaporized material within the vapor channel.

[0022] In some aspects, the cartridge housing has a cross-section that tapers towards the outlet of the cartridge.

[0023] In some aspects, the reservoir body can also include one or more tabs extending therefrom. In certain aspects, the one or more tabs configured to engage the wick.

[0024] In another exemplary implementation, a vaporizer device is provided. In some aspects, the vaporizer device includes a vaporizer body that includes a receptacle configured to insertably receive the vaporizer cartridge. In some aspects of the vaporizer device, the vaporizer cartridge is separable from the vaporizer body. In some aspects of the vaporizer device, the vaporizer cartridge includes a cartridge housing, a reservoir body positioned within the cartridge housing, a wick, and one or more ports. The reservoir body of the vaporizercartridge includes one or more channels, each of which forming a reservoir configured to store a vaporizable material. The reservoir body of the vaporizer cartridge also includes one or more end stops formed at a distal end of each reservoir and configured to balance fluid flow in each reservoir relative to one another. The wick of the vaporizer cartridge can be positioned at a distal end of the reservoir body and in fluid communication with each reservoir. The one or more ports of the vaporizer cartridge can be formed through the cartridge housing and in fluid communication with each reservoir.

[0025] In some aspects of the vaporizer device, the vaporizer cartridge also includes one or more air vents formed through the cartridge housing and in fluid communication with each end stop. In certain aspects of the vaporizer device, the vaporizer cartridge also includes one or more overflow channels formed in the reservoir body, each of the one or more overflow channels providing fluid communication between each end stop and each air vent. In certain aspects of the vaporizer device, each reservoir is in fluid communication with at least one port and at least end stop.

[0026] In certain aspects of the vaporizer device, the vaporizer cartridge also includes one or more valves each at least partially inserted into a respective port of the cartridge housing and configured to selectively seal each of the one or more ports. In certain aspects of the vaporizer device, the one or more valves can be flat elastomeric valves or duckbill valves.

[0027] In some aspects of the vaporizer device, each reservoir of the vaporizer cartridge is refillable via the one or more ports.

[0028] In some aspects of the vaporizer device, the reservoir body of the vaporizer cartridge also includes one or more liquid feed channels formed through the reservoir body and providing the fluid communication between each reservoir and the wick.

[0029] In some aspects of the vaporizer device, the reservoir body of the vaporizer cartridge also includes a plurality of microfluidic features protruding from the reservoir body into each of the one or more fluid channels, wherein each of the plurality of the microfluidic features is spaced apart from an adjacent microfluidic feature.

[0030] In some aspects of the vaporizer device, the vaporizer device also includes an atomizer in fluid communication with the wick. In certain aspects of the vaporizer device, the atomizer can be positioned within the cartridge housing of the vaporizer cartridge and in contact with the wick. In certain aspects of the vaporizer device, the atomizer can include a heating element contacting at least a portion of the wick. In certain aspects of the vaporizer device, the atomizer can also include an atomizer housing wherein at least a portion of the wick of the vaporizer cartridge and at least a portion of the heating element are disposed within theatomizer housing. In some aspects of the vaporizer device, the atomizer housing includes one or more air inlets formed therethrough and configured to provide a path for air to enter an internal airflow path within the vaporizer cartridge.

[0031] In another exemplary implementation, a vaporizer system is provided. In some aspects, the vaporizer system includes a vaporizer device as described herein and a container configured to store a refill liquid vaporizable material. In certain aspects, at least a portion of the stored refill liquid vaporizable material can be transferred into the reservoir body of the vaporizer cartridge through at least one of the one or more ports.

[0032] In some aspects of the vaporizer system, the container can include a container housing, a storage chamber disposed within the container housing and configured to store the refill liquid vaporizable material, and one or more outlets formed through the container housing, each outlet in alignment with a respective port of the vaporizer cartridge upon coupling of the vaporizer device to the container.

[0033] In some aspects of the vaporizer system, a volume of the stored refill liquid vaporizable material is larger than a volume of vaporizable material stored in the vaporizer cartridge.

[0034] In some aspects of the vaporizer system, the container can also include a pump disposed within the container housing. The pump can be in fluid communication with the storage chamber and each of the one or more outlets such that actuation of the pump causes refill fluid to flow from the storage chamber through the one or more outlets. In certain aspects of the vaporizer system, the pump can include an actuator configured to cause the stored refill liquid vaporizable material to flow from the container to the one or more outlets.

[0035] In some aspects of the vaporizer system, the container can include a cradle configured to receive and couple to the vaporizer device. In some aspects of the vaporizer system, the container can also include a cover configured to couple to the container housing. In some aspects of the vaporizer system, the container can also include a vent, wherein the vent provides a fluid communication between the storage chamber and atmosphere.

[0036] The details of one or more implementations of the subject matter described herein are set forth in the accompanying drawings and the description below. Other features and advantages of the subject matter described herein will be apparent from the description and drawings, and from the claims. The claims that follow this disclosure are intended to define the scope of the protected subject matter.BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which are incorporated into and constitute a part of this specification, show certain aspects of the subject matter disclosed herein and, together with the description, help explain some of the principles associated with the disclosed implementations. In the drawings:

[0038] FIGs. 1A-1D illustrate various views of an exemplary implementation of a vaporizer cartridge having a reservoir body as described herein. FIG. 1 A illustrates a partially transparent perspective view of the exemplary vaporizer cartridge; FIG. IB illustrates an exploded perspective view of the exemplary vaporizer cartridge; FIG. 1C illustrates a transparent side view of the exemplary vaporizer cartridge; and FIG. ID illustrates a cross-sectional view of the exemplary vaporizer cartridge.

[0039] FIGs. 2A and 2B illustrate various views of an exemplary reservoir body of the exemplary vaporizer cartridge of FIGs. 1 A-l D. FIG. 2A illustrates a perspective view showing the reservoirs with microfluidic features formed within the reservoir body thereof; and FIG. 2B illustrates a side view showing an air vent and overflow channel in fluid communication with each reservoir.

[0040] FIGs. 3A and 3B illustrate cross-sectional side views of the exemplary reservoir body of FIGs. 2A-2B.

[0041] FIGs. 4A and 4B illustrate views of the exemplary reservoir body of FIGs. 2A-2B, showing fluid flow during a refill action (FIG. 4 A) and during draining (FIG. 4B).

[0042] FIG. 5 illustrates an exploded side view of an exemplary atomizer having an atomizer housing and a heating element configured to contact a wick.

[0043] FIG. 6 illustrates a perspective view of the assembled exemplary atomizer of FIG.5.

[0044] FIG. 7 illustrates a perspective view of the assembled exemplary atomizer of FIG.5 showing air inlets formed through the atomizer housing.

[0045] FIG. 8 illustrates an exploded perspective view of another exemplary implementation of a vaporizer cartridge having a reservoir body as described herein.

[0046] FIG. 9 illustrates a perspective view of the reservoir body of the exemplary vaporizer cartridge of FIG. 8.

[0047] FIG. 10 is a block diagram illustrating an exemplary vaporizer device including the exemplary vaporizer cartridge of FIGs. 1 A-1D and a vaporizer body.

[0048] FIG. 11 is a block diagram illustrating the vaporizer device of FIG. 10, showing the exemplary vaporizer cartridge coupled to the vaporizer body.

[0049] FIGs. 12A-12C illustrate an exemplary vaporizer system including the exemplary vaporizer cartridge of FIGs. 1A-1D and a refill container. FIG. 12A illustrates a perspective view of the exemplary vaporizer system with the vaporizer device of FIG. 11 seated in the cradle of the refill container with cover in place; FIG. 12B illustrates an exploded side view of the exemplary vaporizer system; and FIG. 12C illustrates a perspective view of the exemplary vaporizer system.DETAILED DESCRIPTION

[0050] Implementations of the current subject matter include methods, apparatuses, articles of manufacture, and systems relating to vaporization of one or more materials for inhalation by a user. Example implementations include vaporizer cartridges, vaporizer devices, and systems including vaporizer devices. The term “vaporizer device” as used herein refers to any of a self-contained apparatus, an apparatus that includes two or more separable parts (for example, a vaporizer body that includes a battery and other hardware, and a vaporizer cartridge that includes a vaporizable material), and / or the like. A “vaporizer system,” as used herein, can include one or more components, such as a vaporizer device.

[0051] A vaporizer configured to convert a liquid vaporizable material to the gas-phase and / or aerosol phase (e.g., a suspension of gas-phase and particulate-phase material in air that is in a relative local equilibrium between the phases) can typically include a reservoir or storage container (also referred to herein as a reservoir, tank, storage compartment, or storage volume) containing a volume of the liquid vaporizable material, an atomizer (which may also be referred to as a heater or atomizer assembly), a wicking element (which may be referred to simply as a wick, but which generally refers to an element or combination of elements that exerts a capillary force to draw the liquid vaporizable material from the reservoir to where it is heated by action of the heating element), and optionally, a heating element (e.g., an electrically resistive element through which electrical current is caused to pass to result in the conversion of the electrical current to heat energy) that heats the liquid vaporizable material to result in the conversion at least some of the liquid vaporizable material to the gas phase. The resulting gasphase liquid vaporizable material can in some cases (dependent on a variety of factors) subsequently (and optionally nearly immediately) begin to at least partially condense to form an aerosol in air passing through, over, near, around etc., the atomizer. In some implementations, the wick can be made from one or more rigid or compressible materials, such as cotton, silica, ceramic, and / or the like. Relative to other materials, a cotton wick can allowfor an increased and / or more controllable flow rate of vaporizable material to return to even saturation between puffs.

[0052] As the liquid vaporizable material is heated to form an aerosol, the wick draws additional liquid vaporizable material from the reservoir, thereby reducing the volume of the liquid vaporizable material in the reservoir. Absent a mechanism for allowing air or some other substance into the void space (e.g., a part of the reservoir volume not occupied by liquid vaporizable material) created within the reservoir when the volume of the liquid vaporizable material therein is reduced by conversion to the gas-Zaerosol phase, a reduced pressure state (e.g., an at least partial vacuum) results within the reservoir. This reduced pressure state can adversely affect the efficacy of the wick for drawing the vaporizable material from the reservoir into proximity of the atomizer for being vaporized into the gas phase as the partial vacuum pressure acts contrary to the capillary pressure created within the wick.

[0053] More particularly, a reduced pressure state in the reservoir can result in insufficient saturation of the wick and ultimately the lack of sufficient liquid vaporizable material being delivered to the atomizer for dependable operation of the vaporizer. To counteract the reduced pressure state, ambient air can be allowed to enter the reservoir to equalize the pressure between the interior of the reservoir and ambient pressure. Allowing air to back-fill the void space in the reservoir that is created by vaporized liquid vaporizable material can occur in some vaporizers by air passing into the reservoir through the wicking element. However, this process can generally require that the wicking element be at least partially dry. As a dry wicking element may not be readily achievable and / or may not be desirable for dependable operation of the vaporizer, another typical approach is to provide a vent to allow equalization of pressure between ambient conditions and within the reservoir.

[0054] Examples of vaporizer devices consistent with implementations of the current subject matter include electronic vaporizers, electronic nicotine delivery systems (ENDS), and / or the like. A vaporizer device can be a cartridge-using vaporizer device, a cartridge-less vaporizer device, or a multi-use vaporizer device capable of use with or without a cartridge. In general, such vaporizer devices are hand-held devices that heat (such as by convection, conduction, radiation, and / or some combination thereof) a vaporizable material to provide an inhalable dose of the material.

[0055] The vaporizable material used with a vaporizer device can be provided within a cartridge (for example, a part of the vaporizer that contains the vaporizable material in a reservoir or other container) which can be refillable when empty, or disposable such that a new cartridge containing additional vaporizable material of a same or different type can beused. For example, the liquid vaporizable material can include a carrier solution in which active and / or inactive ingredient(s) are suspended or held in solution. Alternatively, the liquid vaporizable material can be a liquid form of the vaporizable material itself. The liquid vaporizable material can be capable of being completely vaporized. Alternatively, at least a portion of the liquid vaporizable material can remain after all of the material suitable for inhalation has been vaporized.

[0056] However, current refillable vaporizer cartridges require the user to control the amount of liquid vaporizable material added when refilling so as not to overflow the reservoir. Plus, since the reservoir is typically configured to contain sufficient liquid vaporizable material for multiple sessions (i.e., the equivalent of multiple cigarettes), current refillable vaporizer cartridges do not have a session demarcation to notify the user of the end of the session. The terms “sessioning,” “session,” “vaporizer session,” or “vapor session” are used generically to refer to a period devoted to the use of the vaporizer. The period can include a time period, a number of doses, an amount of vaporizable material, and / or the like. Various features and devices are described below that improve upon or overcome these issues.

[0057] The vaporizer cartridges described herein can thus be configured to provide a ‘session’ based experience where the user is prompted to stop puffing and perform an action after a pre -determined amount of liquid vaporizable material has been consumed. In some aspects, the pre-determined amount of liquid vaporizable material is sufficient for a single session before prompting the user to perform the action. In other aspects, the pre-determined amount of liquid vaporizable material is sufficient for more than one (e.g., 2, 3, 4, 5, or more) sessions before prompting the user to perform the action. As described herein, the action to be performed by the user can be refilling all or a portion of the liquid vaporizable material within the reservoir. Additionally, the vaporizer cartridges described herein are configured to be refilled from any fill state without having to control and / or adjust the amount of refill liquid vaporizable material added to the reservoir.

[0058] With reference to FIGs. 1 A-1D, an exemplary implementation of a vaporizer cartridge 100 is provided. As shown, the vaporizer cartridge 100 described herein can include a cartridge housing 110, a reservoir body 130, and optionally an atomizer 120. While the cartridge housing 110 can have a variety of sizes and shapes, the exemplary implementation of the cartridge housing 110 shown in FIGs. 1 A and IB, is substantially rectangular in shape, and includes at least two sets of opposing sidewalls 114, 116 in which the first set of opposing sidewalls 114 extends substantially perpendicular (e.g., in the Y-direction) to the second set of opposing sidewalls 116. In exemplary implementations, the cartridge housing 110 can have a cross-section that is rectangular in shape formed by opposed pairs of sidewalls extending along the longitudinal axis L. In other exemplary implementations, the cartridge housing 110 has a cross-section that tapers from a distal end 118 to a proximal end 119 thereof, as shown in FIGs. 1C and ID.

[0059] The reservoir body 130 can include one or more channels 134, each channel 134 forming a reservoir 140 that is configured to store a capillary -bound liquid vaporizable material. As used herein, a “capillary-bound” liquid refers to a liquid that is not free to move due to capillary tension. The vaporizer cartridge 100 can also include one or more end stops 172 (as shown in FIG. 2B) formed at a distal end of each reservoir 140 and configured to balance fluid flow in each reservoir 140 relative to one another. Each reservoir 140 being in fluid communication with a wick 125, as described in greater detail below. Inclusion of the reservoir body 130 in the vaporizer cartridge 100 improves a volumetric efficiency of the cartridge 100, defined as a volume of liquid vaporizable material that is eventually converted to an inhalable aerosol relative to a total volume of the liquid vaporizable material included in the cartridge 100.

[0060] While the reservoir body 130 can have a variety of configurations, an exemplary configuration is shown in FIGs. 2A and 2B. As shown, the reservoir body 130 can include one or more channels 134 formed along the reservoir body 130 such that each of the one or more channels 134 forms a respective reservoir 140 between opposing inner surfaces 112a, 112b of the cartridge housing 110 (FIG. IB) when the reservoir body 130 is positioned within the cartridge housing 110. In other words, each channel 134 can be formed through a width (see, e.g., 233 of FIG. 9) of the reservoir body 130. In such a configuration, the reservoir body 130 can have two independent reservoirs that are in fluid communication with a wick 125 (FIGs. 4A and 4B). Alternatively, the one or more channels 134 can be formed along an outer surface 136 of the reservoir body 130 such that each of the one or more channels 134 forms a reservoir 140 between the outer surface 136 of the reservoir body 130 and an inner surface 112a of the cartridge housing 110. In such a configuration, the reservoir body 130 can include a plurality of pairs of independent reservoirs that are all in fluid communication with the wick 125 (FIGs. 4A and 4B).

[0061] Each reservoir 140 is configured to store a vaporizable material (not shown) and is substantially fluidically isolated from one another. In other words, the only fluidic communication between each reservoir 140 formed by the one or more channels 134 occurs at the wick 125, as discussed below.

[0062] In some implementations, each of the one or more channels 134 can include a plurality of microfluidic features 160 protruding from the reservoir body 130 into the reservoirs 140 and configured to create local areas of high drive and capillary breaks that can be overcome sequentially as the liquid vaporizable material drains from the reservoirs 140 (see also FIGs. 3A and 3B). In addition, the plurality of microfluidic features 160 are configured to generate capillary backpressure against the capillary drive of the wick 125, thereby preventing leaking of the liquid vaporizable material due to gravitational forces while allowing liquid saturation of the wick 125 as required. In some implementations, the plurality of microfluidic features 160 form portions of the channel 134 having a smaller hydraulic diameter than portions or parts of the channel 134 between each of the plurality of microfluidic features 160. As used herein, “hydraulic diameter’’ can be understood as a function of the hydraulic radius RH, which is defined as the cross-sectional area of the channel divided by the wetted perimeter. The “wetted perimeter” includes all edges of a constriction point acted upon by surface tension of the liquid vaporizable material.

[0063] Each of the microfluidic features 160 can vary in shape, size, frequency, and / or symmetry. By varying the dimensions of the plurality of microfluidic features 160, a magnitude of the capillary backpressure within the one or more channels 134 can be adjusted to control flow rate of the liquid vaporizable material, thereby improving saturation of a wick 125. Thus, the dimensions of the microfluidic features 160 can be individually selected to achieve desired pressures within the channel 134 of the reservoir body 130. To promote efficient filling and emptying of the reservoirs 140, the dimensions of each of the plurality of microfluidic features 160 can be selected based on a calculated Bond number (Bo), which refers to the ratio between the gravitational forces and surface tension in a microfluidic system, to ensure that the liquid vaporizable material remains capillary bound in the one or more fluid channels 134. The Bo within the one or more fluid channels 134 can therefore define an effective maximum channel dimension before the meniscus of the liquid vaporizable material becomes unstable, wherein a Bo > 1 is indicative of an unstable meniscus (i.e., gravity dominates). In exemplary implementations, the Bo is less than 1 throughout the one or more channels 134. The Bo can be calculated using the following equation (I), wherein Ap = difference in density of the liquid and air in kg / m3; g = gravitational acceleration in m / s2; L = hydraulic diameter of the channel in m; and y = surface tension of the liquid in N / m.

[0064] As such, the height and width of each of the plurality of microfluidic features 160 can be dimensioned to vary the meniscus venting pressure within each of the one or more channels 134 of the reservoir body 130. Thus, the pressure differential of liquid moving through the one or more channels 134 of the reservoir body 130 during a pressure event (e.g., during a puff) can be equalized in conjunction with air entering through an air vent, as discussed below, thereby encouraging even flow of the liquid vaporizable material among the one or more fluid channels 134 to supply liquid vaporizable material to the wick 125.

[0065] In some implementations, each of the plurality of microfluidic features 160 is substantially parallel to an adjacent microfluidic feature. In some implementations, each of the plurality of microfluidic features 160 has a substantially uniform protrading length (d), as shown in FIGs. 3A and 3B. In other implementations, each of the plurality of microfluidic features 160 has varied protruding lengths. In other implementations, each of the plurality of microfluidic features 160 is spaced apart from an adjacent microfluidic feature. In certain implementations, a distance (h) between each of the plurality of microfluidic features 160 is substantially uniform. In certain implementations, a distance between each of the plurality of microfluidic features 160 varies relative to one another.

[0066] Referring now to FIGs. 1C, ID and 2A, the reservoir body 130 can also include one or more ports 150 formed through the cartridge housing 110 and in fluid communication with each of the one or more fluid channels 134. In some implementations, the one or more ports 150 can be aligned with one or more openings 154 formed through the cartridge housing 110 (see FIG. IB). The one or more ports 150 can be used for refilling of the reservoirs 140. As shown in FIG. IB, the vaporizer cartridge 100 can also include one or more valves 152 each at least partially inserted into a respective opening 154 of the cartridge housing 110 and configured to selectively seal each of the one or more ports 150. Each valve 152 can be configured to form a seal against or around, for example, an outlet of a refilling interface, as discussed in greater detail below. Exemplary valves that can be included in the vaporizer cartridge 100 include, but are not limited to, flat elastomeric valves or duckbill valves. In some implementations, the valves 152 can be configured to be pierced by, for example, an outlet of the refilling interface and then seal upon removal of the vaporizer cartridge 100 therefrom.

[0067] Referring to FIGs. 1C-1D and 2A, in some implementations, the reservoir body 130 can also include one or more liquid feed channels 180 disposed therethrough and configured to provide a direct fluid connection between each of the reservoirs 140 and a wick 125. The one or more liquid feed channels 180 can be positioned laterally offset from each other relative to the longitudinal axis L of the cartridge housing 110 (see FIG. 1 A). In an exemplary implementation, each of the liquid feed channels 180 are positioned on a same side of the reservoir body 130. In another implementation, the liquid feed channels 180 are positioned on diagonally opposing sides of the reservoir body 130.

[0068] As shown in FIGs. 2B, 3A-3B, and 4A-4B, the reservoir body 130 and can also include one or more end stops 172 formed at a distal end of each reservoir 140 and configured to balance fluid flow in each reservoir relative to one another. Each end stop 172 has a diameter (g) (FIG. 3B) that is substantially smaller than a diameter of each of the one or more ports 150 and can be provide a fluid communication between each reservoir 140 and one or more air vents 170 to provide a path for air to enter and maintain a consistent pressure across each reservoir 140 during a pressure event (e.g., during a puff).

[0069] In certain implementations, the reservoir body 130 also includes one or more overflow channels 174 formed therein and providing fluid communication between each end stop 172 and each air vent 170. In some implementations, each of the one or more overflow channels 174 can be formed as a groove in the outer surface 136 of the reservoir body 130 such that the overflow channels 174 are formed between the groove and an inner surface 112a, 112b of the cartridge housing 110. While the one or more overflow channels 174 can have a variety of sizes and shapes, the one or more overflow channels 174 of the exemplary implementation of the reservoir body 130 shown in FIGs. 2B, 3 A, and 3B can have a substantially rectangular cross-section having a depth (e) with fillets (f) and a width (g) to provide areas of high restriction to ensure that each of the reservoirs 140 fill and drain at consistent rates relative to one another. For example, as liquid vaporizable material fills a reservoir 140, a fluidic restriction formed by a corresponding end stop 172 and overflow channel 174 in fluid communication with that reservoir 140 causes an increase in fill resistance. In implementations where the reservoir body has more than one reservoir 140, the reservoir with a lower fill resistance will preferentially fill over an adjacent reservoir with higher fill resistance. Thus, if a first reservoir starts to fill faster than an adjacent reservoir, the fill resistance in the first reservoir increases resulting in a decrease in flow rate of liquid vaporizable material flowing into the first reservoir through a respective port 150 to equalize fluid flow 176 amongst all reservoirs 140, as shown in FIG. 4A. Further, since each of thereservoirs 140 is substantially fluidically isolated from one another with the exception of fluidic communication at the wick 125, each of the reservoirs 140 drains at a substantially similar rate regardless of its relative fill state during use of the vaporizer cartridge 100, as shown in FIG. 4B (drain path indicated by arrow 178).

[0070] In some implementations, each reservoir 140 is in fluid communication with at least one port 150 and at least one end stop 172. In some implementations each of the at least one port 150 and the at least one end stop 172 of a reservoir 140 has a substantially uniform size and shape, as compared to the at least one port 150 and the at least one end stop 172 of an adjacent reservoir 140 to equalize fluid flow amongst the reservoirs 140 formed by the one or more fluid channels 134 of the reservoir body 130.

[0071] Referring now to FIGs. 1 A-1D, in some implementations, the vaporizer cartridge 100 can also include a vapor channel 190 disposed therethrough and providing a fluid communication between the wick 125 and an outlet 105 of the vaporizer cartridge 100, which in this case is also an outlet of the cartridge housing 110. In other implementations, the outlet 105 of the vaporizer cartridge 100 can be an outlet of a mouthpiece (not shown) that is coupled to a proximal end 119 of the cartridge housing 110, where the outlet of the mouthpiece is in fluid communication with the outlet 105 of the cartridge housing 110.While the vapor channel 190 can have a variety of configurations, in some implementations, the vapor channel 190 has a tapered or non-tapered cross-section. In certain implementations, the vapor channel 190 has a cross-section that tapers toward the wick 125. Further, depending on the implementation, the vapor channel 190 can include a single channel or multiple channels. A person skilled in the art will appreciate that the size, shape, and overall cross-section of the vapor channel 190 and the number of channels within the vaporizer cartridge 100 can depend at least upon the structural dimensions of the other components of the vaporizer cartridge 100 and the vaporizer cartridge itself, and therefore is not limited to what is shown.

[0072] As shown in FIGs. 1C and ID, in some implementations, the vapor channel 190 can include a baffle 192 that is configured to promote mixing of air and vaporized material that passes into the vapor channel 190. In other implementations, the baffle 192 can be positioned at a portion of the reservoir body (not shown) or at other suitable locations. The number, size, and shape of the baffle 192 will depend at least upon the structural configuration of the vapor channel 190 and / or the configuration of the reservoir body 130, and therefore, it should be appreciated that the number, size, and shape of the baffle is not limited to what is shown.

[0073] As shown in FIGs. 2A, 3A and 3B. in some implementations, the reservoir body 130 can also include a vapor outlet 138 providing fluid communication between the wick 125 and the vapor channel 190. In certain implementations, at least a portion of vapor channel 1 0 can be inserted into the vapor outlet 138. In certain implementations, one or more baffles 192 can be positioned within the vapor outlet 138.

[0074] As shown in FIGs. 4A and 4B, the reservoir body 130 can also include a wick 125 in fluid communication with each of the reservoirs 140. While the wick 125 can have a variety of configurations, in this implementation, the wick 125 is formed of a rectangular porous substrate. In some implementations, the reservoir body 130 can include at least one (e.g., 1, 2, 3, 4, or more) tab 137 extending outwards from the reservoir body 130 and configured to engage the wick 125. While the number of tabs 137 can vary, in illustrated implementation shown in FIGs. 3 A, 3B, 4A, and 4B, the reservoir body 130 includes four tabs 137. Further, the tabs 137 can have a variety of configurations. For example, as shown in FIGs. 1C and ID, each of the one or more tabs 137 can also be configured to be inserted into an opening of an atomizer housing 123, thereby creating a seamless interface (e.g., when the reservoir body and the atomizer housing are coupled together) and preventing vaporizable material from leaking at the junction thereof. A person skilled in the art will appreciate that the number, size, and shape of the tabs depend at least upon the structural configuration of the reservoir body and the atomizer. As such, the number, size, and shape of the tabs are not limited to what is illustrated in the figures.

[0075] Further, depending on the implementation, the vaporizer cartridge 100 can also include the atomizer 120, which is generally illustrated in FIGs. 1 A and IB, whereas in other implementations, the atomizer 120 can be part of a vaporizer body of the vaporizer device (not shown). In some implementations, the atomizer 120 can be positioned distal to the reservoir body 130 (e.g., in the Y-direction) within the cartridge housing 110 and configured to vaporize a vaporizable material (e.g., vaporizable material, in liquid form) within the reservoir 140 into a gas and / or a condensed (e.g., aerosol particles or droplets) phase for inhalation by a user. Exemplary atomizers include, but are not limited to, piezo atomizers, heating atomizers, pressure nozzle atomizers, rotary atomizers, pneumatic atomizers, ultrasonic atomizers, intemal / extemal mixing atomizers, and the like.

[0076] As shown in FIGs. ID, 5 and 6, in some implementations, the atomizer 120 can include a heating element 124 contacting at least a portion of the wick 125. The heating element 124 can have a variety of configurations. In the illustrated exemplary implementation shown in FIGs. 5 and 6, the heating element 124 can include one or moretines 126 (e.g., heating segments) located in a heating portion 127, one or more (e.g., one, two, or more) connecting portions or legs 128 extending from the tines 126, and one or more contact portions 129 formed at an end portion of each of the one or more legs 128. The heating element 124 can be assembled with the atomizer housing 123 and wick 124, and it should be understood that FIG. 5 depicts an exploded view of the atomizer 120, consistent with implementations of the current subject matter. In some implementations, the one or more tines 126 can be spaced apart from one another. In some implementations, the heating element 124 can be pre-formed to define an interior volume configured to receive the wick 125 such that the heating element 124 secures at least a portion of the wick 125 to the heating element 124, as shown in FIG. 6. In certain implementations, the heating element 124 can be configured to contact at least two separate surfaces of the wick 125.

[0077] Referring now to FIGs. 5-7, in certain implementations, the atomizer 120 can also include an atomizer housing 123, where at least a portion of the atomizer 120 is disposed therein. For example, in some implementations, the wick 125 and at least a portion of the heating element 124 can be disposed within the atomizer housing 123. Alternatively, or in addition, at least a portion of the heating element 124 (e.g., the one or more legs 128 and / or the one or more contact portions 129) protrudes out of the atomizer housing 123. In some implementations, the atomizer housing 123 can be made of plastic, polypropylene, and the like. In some implementations, an exterior surface of the atomizer housing 123 can include one or more recesses (not shown) in which at least a portion of each of the legs 128 of the heating element 125 can be positioned and secured. Further, the atomizer housing 123 can also include an opening 196 providing access to an internal volume 198 (FIG. 6), in which at least the heating portion 127 of the heating element 124 and at least a portion of the wick 125 are positioned.

[0078] As shown in FIG. 7, the atomizer housing 123 can include one or more air inlets 194 formed therethrough. In some exemplary implementations, the one or more air inlets 194 can be in fluid communication with an air path (e.g., air path 320 of FIG. 11) formed once the vaporizer cartridge 100 is coupled to a vaporizer body, as discussed below. Thus, incoming air passing along the internal airflow path passes over, through, etc., the atomizer, where gas phase vaporizable material is entrained into the air, as the air flows through the vaporization passageway 190 to the outlet 105 of the cartridge 100.

[0079] With reference now to FIGs. 8 and 9, another exemplary implementation of a vaporizer cartridge 200 is provided. The vaporizer cartridge 200 has many similar components to vaporizer cartridge 100 in FIGs. 1 A-1D and therefore only the differences will be discussedin detail. As shown, the vaporizer cartridge 200 includes a cartridge housing 210, a reservoir body 230, where the reservoir body 230 can be positioned within the cartridge housing 210, and a wick 225. In this exemplary implementation, reservoir body 230 includes one or more channels 234 formed along an outer surface 236 of the reservoir body 230 such that each of the one or more channels 234 forms a reservoir 240 between the outer surface 236 of the reservoir body 230 and an inner surface 212a of the cartridge housing 210. Alternatively, each of the one or more channels 234 can be formed through a width 233 of the reservoir body 230 such that each of the one or more channels 234 forms a reservoir 240 between opposing inner surfaces 212a, 212b of the cartridge housing 210.

[0080] As shown, each of the one or more channels 234 can be formed in a serpentine shape extending along a longitudinal axis M of the reservoir body 230. In some implementations, the reservoir body 230 includes two reservoirs 240. In other implementations, the reservoir body 230 includes four reservoirs 240. Each reservoir 240 is configured to store a vaporizable material (not shown) and is substantially fluidically isolated from one another, as described above. As with the vaporizer cartridge 100 shown in FIGs. 1 A-1D, the only fluidic communication between each reservoir 240 formed by the one or more fluid channels 234 occurs at the wick 225, as shown in FIG. 9.

[0081] As described above, each of the one or more fluid channels 234 can include a plurality of microfluidic features 260 protruding from the reservoir body 230 into the reservoirs 140 and configured to create local areas of high drive and capillary breaks that can be overcome sequentially as liquid vaporizable material drains from the reservoirs 240 (FIG.9). As with the vaporizer cartridge 100 in FIGs. 1 A-1D, by varying the geometries (e.g., width and depth) of the microfluidic features 260 throughout the fluid channels 234, flow of the liquid vaporizable material is improved, thereby reducing venting pressure within the reservoir 240 due to liquid movement therein.

[0082] In some implementations, the plurality of microfluidic features 260 forms one or more spaced-apart constriction points 264, each defined by a plurality of projections 266 extending into the fluid channel 234 from the reservoir body 230, thereby forming portions of the channel 234 having a smaller hydraulic diameter than portions or parts of the channel 234 between the constriction points 264. By varying the dimensions of the plurality of microfluidic features 260, liquid vaporizable material, a magnitude of the capillary backpressure within the one or more channels 234 can be adjusted to control flow rate of the liquid vaporizable material, thereby improving saturation of a wick 225. For example, in some implementations, each constriction point 264 can be sized based on its distance withinchannel 234 from the wick 225 to ensure effectiveness in leak prevention, while being as large as possible to limit viscous pressure drop. As used herein, “viscous pressure drop” refers to the difference in pressure between two points in a fluid that occurs when frictional forces act on the fluid as it flows through a channel or orifice. In exemplary implementations, one or more constriction points 264 furthest from the wick 225 within channel 234 can be smaller relative to those constriction points 264 closer to the wick 225 since there is a greater hydrostatic offset between the respective constriction point 264 and the wick 225, and therefore, a greater capillary backpressure required to prevent oversaturation and leakage through the wick 225. In exemplary implementations, each of the constriction points 264 can have a substantially uniform cross-sectional area and / or hydraulic diameter. In other exemplary implementations, one or more of the constriction points 264 can have a different cross-sectional area and / or hydraulic diameter relative to each other. In other exemplary implementations, a distance between each of the constriction points 264 is substantially uniform. In yet other exemplary implementations, a distance between each of the constriction points 264 varies relative to one another. Each of the plurality of constriction points 264 can vary in shape, size, frequency, and / or symmetry. By varying the geometries (e.g., width and depth) of the constriction points 264 throughout the channel 234, capillary backpressure within the channel 234 is controlled, thereby improving flow of the liquid vaporizable material to ensure consistent saturation of the wick 225 while avoiding leakage thereof.

[0083] As shown in FIG. 9, the reservoir body 230 can also include one or more ports 250 formed through the cartridge housing 210 and in fluid communication with each of the one or more fluid channels 234 (see also FIGs. 1C and 2A). In some implementations, the one or more ports 250 can be aligned with one or more openings formed through the cartridge housing 210 (see openings 154 shown in FIG. IB). The vaporizer cartridge 200 can also include one or more valves (not shown) each inserted into a respective opening of the cartridge housing 210 and configured to selectively seal each of the one or more ports 250. Each valve can be configured to form a seal against or around, for example, an outlet of refilling interface, as discussed in greater detail below. In some implementations, the valves can be configured to be pierced by, for example, an outlet of the refilling interface and then seal upon removal of the vaporizer cartridge 200 therefrom.

[0084] In some implementations, the reservoir body 230 can also include one or more liquid feed channels 280 disposed therethrough and configured to provide a direct fluid connection between each of the reservoirs 240 and the wick 225. In an exemplaryimplementation, each of the liquid feed channels 280 is positioned on a same side of the reservoir body 230. In another implementation, the liquid feed channels 280 are positioned on diagonally opposing sides of the reservoir body 230.

[0085] As shown in FIG. 8, the vaporizer cartridge 200 can also include a vapor channel 290 providing fluid communication between the wick 225 and the outlet 205 of the vaporizer cartridge 200. The vapor channel 290 can be configured to allow vaporized material to pass from the atomizer to the outlet 205 of the vaporization cartridge 200 for inhalation by a user. In some implementations, the reservoir body 230 also includes a vapor outlet 238 (shown in FIG. 9) disposed therethrough. In some exemplary implementations, at least a portion of the vapor channel 290 is inserted into the vapor outlet 238 of the reservoir body 230.

[0086] As shown in FIGs. 8 and 9, the reservoir body 230 can also include a wick 225 in fluid communication with the reservoirs 240. While the wick 225 can have a variety of configurations, in this implementation, the wick 125 is formed of a rectangular porous substrate. In some implementations, the reservoir body 230 can include tabs 235 configured to engage the wick 225.

[0087] Depending on the implementation, the vaporizer cartridge 200 can also include an atomizer (not shown), whereas in other implementations, the atomizer, or a portion thereof, can be part of a vaporizer body of the vaporizer device (not shown). In some implementations, the atomizer can be positioned distal to the reservoir body 230 (e.g., in the Y-direction) within the cartridge housing 210 and configured to vaporize a vaporizable material (e.g., vaporizable material, in liquid form) within the cartridge housing 210 into vaporized material for inhalation by a user.

[0088] FIGS. 10 and 11 illustrate an exemplary vaporizer device 300 that includes a vaporizer body 302 and a vaporizer cartridge 304. In FIG. 10, the vaporizer body 302 and the vaporizer cartridge 304 are illustrated in a decoupled configuration, whereas in FIG. 11, the vaporizer body 302 and the vaporizer cartridge 304 are illustrated in a coupled configuration. The vaporizer cartridge 304 is similar to vaporizer cartridge 100, 200 described above, and is therefore not described in detail herein. For purposes of simplicity, certain components of the vaporizer device 300 are not illustrated in FIGS. 10 and 11.

[0089] The vaporizer body 302 and the vaporizer cartridge 304 can be coupled to each other by way of corresponding coupling elements. For example, as shown in FIGS. lO and 11, the vaporizer body 302 includes a first set of coupling elements 306a, 306b, and the vaporizer cartridge 304 includes a second set of corresponding coupling elements 308a, 308b. While the first and second set of coupling elements can have a variety of configurations, in this illustratedimplementation, the first set of coupling elements 306a, 306b includes two protrusions extending inward into the vaporizer body 302 and the second set of coupling elements 308a, 308b includes two recesses in two opposing sidewalls 309a, 309b of the vaporizer cartridge 304.

[0090] The vaporizer body 302 can have a variety of configurations. As shown in FIGS.10 and 11, the vaporizer body 302 can include a sleeve 310 that extends from a proximal end 310a to a distal end 310b. The sleeve 310 defines a cartridge receptacle 312 within the vaporizer body 302 that is configured to receive at least a portion of the vaporizer cartridge 304. The distal end 310b of the sleeve 310 is coupled to a chassis 313 that is configured to house at least a portion of any additional components of the vaporizer device 300 (e.g., a power source, input device(s), sensor(s), output, a controller, communication hardware, memory, and the like). Once the vaporizer cartridge 304 is coupled to the vaporizer body 302, a fluid path 320, as shown in FIG. 11, is created within the cartridge receptacle 312 between the chassis 313 and a distal surface 304a of the vaporizer cartridge 304, and through the vaporization channel 316 of the cartridge 304.

[0091] As shown in FIGS. 10 and 11, the vaporizer device 300 can include a power source 402 (e.g., a non-rechargeable primary battery, a rechargeable secondary battery, a fuel cell, and / or the like) and a controller 404 (e.g., a processor, circuitry, etc. capable of executing logic). The controller 404 can be configured to control the delivery of heat to the atomizer 314 of the cartridge 304 to cause a vaporizable material to be converted from a condensed form (e.g., a liquid) to a gas phase. For example, the controller 404 can control the delivery of heat to the atomizer 314 by at least controlling a discharge of current from the power source 402 to the atomizer 314. The controller 404 can be part of one or more printed circuit boards (PCBs) consistent with certain implementations of the current subject matter.

[0092] In all implementations of the vaporizer device, after conversion of the vaporizable material to the gas phase, and depending on the type of vaporizer device, the physical and chemical properties of the vaporizable material, and / or other factors, at least some of the gasphase vaporizable material can condense to form particulate matter in at least a partial local equilibrium with the gas phase as part of an aerosol. The vaporizable material in the condensed phase (e.g., the particulate matter) in at least partial local equilibrium with the vaporizable material in the gas phase can form some or all of an inhalable dose provided by the vaporizer device 300 for a given puff or draw on the vaporizer device 300. It will be understood that the interplay between the vaporizable material in the gas phase and in the condensed phase in an aerosol generated by the vaporizer device 300 can be complex anddynamic, as factors such as ambient temperature, relative humidity, chemistry, flow conditions in fluid paths, such as airflow paths, (both inside the vaporizer and in the airways of a human or other animal), mixing of the gas-phase or aerosol-phase vaporizable material with other air streams, etc., can affect one or more physical parameters of an aerosol. In some vaporizer devices, and particularly for vaporizer devices for delivery of more volatile vaporizable materials, the inhalable dose can exist predominantly in the gas phase (i.e., formation of condensed phase particles can be very limited).

[0093] As discussed above, to enable the vaporizer device 300 to be used with liquid vaporizable materials (e.g., neat liquids, suspensions, solutions, mixtures, etc.), in some implementations, the atomizer 314 can include a wi eking element (also referred to herein as a wick) formed from one or more materials capable of causing fluid motion by capillary pressure. However, in other implementations, the wicking element can be included in the reservoir body of the vaporizer cartridge with at least a portion of the atomizer (e.g., the heating element) positioned in contact with the wicking element. Thus, the wicking element can convey a quantity of the liquid vaporizable material to a part of the atomizer 314 that includes a heating element (not shown in FIGS. 10 and 11).

[0094] As discussed herein, the wick is generally configured to draw liquid vaporizable material from the reservoir(s) 315 of the cartridge 304 configured to contain (and that can in use contain) the liquid vaporizable material such that the liquid vaporizable material can be vaporized by heat generated by the heating element. The wick can also optionally allow air to enter the reservoir 315 to replace the volume of liquid removed. In other words, capillary action can pull liquid vaporizable material into the wick for vaporization by the heating element (described below), and air can, in some implementations of the current subject matter, enter the reservoir 315 through the first port of the cartridge to at least partially equalize pressure in the reservoir. Other approaches to allowing air back into the reservoir to equalize pressure are also within the scope of the current subject matter.

[0095] While the atomizer 314 is shown in FIG. 10 to be fully part of the cartridge 304, in other implementations, at least a portion of the atomizer (e.g., one or both of the wicking element and the heating element) can be located in, and thus part of, the vaporizer body of the vaporizer device. In implementations in which a portion of the atomizer (e.g., heating element and / or wicking element) is part of the vaporizer body, the vaporizer device can be configured to deliver liquid vaporizer material from the reservoir(s) in the vaporizer cartridge to the atomizer part(s) included in the vaporizer body.

[0096] In all implementations of the vaporizer device, the heating element can be or include one or more of a conductive heater, a radiative heater, and a convective heater. One type of heating element is a resistive heating element, which can be constructed of or at least include a material (e.g., a metal or alloy, for example a nickel-chromium alloy, or a non-metallic resistor) configured to dissipate electrical power in the form of heat when electrical current is passed through one or more resistive segments of the heating element. In some implementations of the current subject matter, the atomizer 314 can include a heating element that includes resistive heating element or other heating element wrapped around, positioned within, integrated into a bulk shape of, pressed into thermal contact with, or otherwise arranged to deliver heat to a wicking element to cause a liquid vaporizable material drawn by the wicking element from a reservoir to be vaporized for subsequent inhalation by a user in a gas and / or a condensed (e.g., aerosol particles or droplets) phase. Other wicking element, heating element, and / or atomizer configurations are also possible, as discussed further below.

[0097] The heating element can be activated (e.g., the controller 404, which is optionally part of the vaporizer body 302, can cause current to pass from the power source 402 through a circuit including the heating element, which is optionally part of the cartridge 304), in association with a user puffing (e.g., drawing, inhaling, etc.) on the cartridge 304 itself or on a mouthpiece coupled to the cartridge 304 (or by user interaction with an input device included in the vaporizer device) to cause air to flow from an air inlet, such as air inlet 318, along a fluid path, such as fluid path 320, that passes the atomizer 314 (e.g., wicking element and heating element), optionally through one or more condensation areas or chambers, to an outlet of the cartridge 304 or of a mouthpiece coupled to the cartridge. As such, electrical contacts can be attached to the heating element to operatively couple to at least the power source 402, e.g., a power source disposed within a vaporizer body. The electrical contacts can have a variety of configurations. For example, in one implementation, the electrical contacts are in the form of wires, which can be over molded. Further, incoming air passing along the fluid path passes over, through, etc. the atomizer, where gas phase vaporizable material is entrained into the air. As noted above, the entrained gas-phase vaporizable material can condense as it passes through the remainder of the fluid path such that an inhalable dose of the vaporizable material in an aerosol form can be delivered through the outlet (e.g., of the cartridge itself or of a mouthpiece coupled to the cartridge) for inhalation by a user.

[0098] In some implementations of the current subject matter, the vaporizer device 300 can be configured to connect (e.g., wirelessly or via a wired connection) to a computing device (or optionally two or more devices) in communication with the vaporizer device 300.To this end, the controller 404 can include communication hardware 412. The controller 404 can also include a memory 414. A computing device can be a component of a vaporizer system that also includes the vaporizer device 300, and can include its own communication hardware, which can establish a wireless communication channel with the communication hardware 412 of the vaporizer device 300. For example, a computing device used as part of a vaporizer system can include a general purpose computing device (e.g., a smartphone, a tablet, a personal computer, some other portable device such as a smartwatch, or the like) that executes software to produce a user interface for enabling a user of the device to interact with a vaporizer. In other implementations of the current subject matter, such a device used as part of a vaporizer system can be a dedicated piece of hardware such as a remote control or other wireless or wired device having one or more physical or soft (e.g., configurable on a screen or other display device and selectable via user interaction with a touch-sensitive screen or some other input device like a mouse, pointer, trackball, cursor buttons, or the like) interface controls.

[0099] The vaporizer can also include one or more outputs 411 features or devices for providing information to the user. For example, the outputs can include one or more light emitting diodes (LEDs) configured to provide feedback to a user based on a status and / or mode of operation of the vaporizer device. In some implementations, the one or more outputs can include a plurality of LEDs (i.e., two, three, four, five, or six LEDs). The one or more outputs (i.e., each individual LED) can be configured to display light in one or more colors (for example, white, red, blue, green, yellow, etc.). The one or more outputs can be configured to display different light patterns (for example, by illuminating specific LEDs, varying a light intensity of one or more of the LEDs over time, illuminating one or more LEDs with a different color, and / or the like) to indicate different statuses, modes of operation, and / or the like of the vaporizer device. In some implementations, the one or more outputs can be proximal to and / or at least partially disposed within a bottom end region of the vaporizer device. The vaporizer device can, additionally or alternatively, include externally accessible charging contacts, which can be proximate to and / or at least partially disposed within the bottom end region of the vaporizer device.

[0100] A computing device that is part of a vaporizer system as defined above can be used for any of one or more functions, such as controlling dosing (e.g., dose monitoring, dose setting, dose limiting, user tracking, etc.), controlling sessioning (e.g., session monitoring, session setting, session limiting, user tracking, etc.), controlling nicotine delivery (e.g., switching between nicotine and non-nicotine vaporizable material, adjusting an amount ofnicotine delivered, etc.), obtaining locational information (e.g., location of other users, retailer / commercial venue locations, vaping locations, relative or absolute location of the vaporizer itself, etc.), vaporizer personalization (e.g., naming the vaporizer, locking / password protecting the vaporizer, adjusting one or more parental controls, associating the vaporizer with a user group, registering the vaporizer with a manufacturer or warranty maintenance organization, etc.), engaging in social activities (e.g., games, social media communications, interacting with one or more groups, etc.) with other users, or the like.

[0101] Alternatively, and / or in addition, in some implementations of the current subject matter, the vaporizer device 300 can be configured to connect to a refill container 410 for refilling the liquid vaporizable material in the reservoir body of the vaporizer cartridge. FIGs. 12A-12C illustrate an exemplary vaporizer system 400 that includes the vaporizer cartridge 100 of FIGs. 1 A-1D and a refill container 410. For purposes of simplicity, certain components of the vaporizer cartridge 100 are not illustrated in FIGs. 12A-12C.

[0102] As shown in FIGs. 12A-12C, vaporizer cartridge 100 is aligned with the refill container 410 to transfer at least a portion of a stored refill liquid vaporizable material from the refill container 410 into the reservoir body 130 of the vaporizer cartridge 100 through at least one of the one or more ports 150. While the size, shape, and configuration of the refill container 410 can vary, in the illustrated implementation shown in FIGs. 12A-12C, the refill container 410 includes a container housing 420 and a storage chamber 430 disposed within the container housing 420. Storage chamber 430 can be configured to store the refill liquid vaporizable material (not shown). In some exemplary implementations, storage chamber 430 is configured to store a volume of refill liquid vaporizable material that is larger than a volume of all reservoirs 140 of the vaporizer cartridge 100.

[0103] As shown in FIG. 12B, the container housing 420 can include one or more outlets 450 formed therethrough. In some implementations, the one or more outlets 450 can be spaced apart from each other to form a refilling interface such that the one or more outlets 450 are in respective alignment with the one or more ports 150 of the vaporizer cartridge 100 when the vaporizer cartridge 100 is coupled to the refill container 410. In some implementations, the container housing 420 can include a cradle 480 configured to receive and couple to the vaporizer device. While the cradle 480 can have a variety of configurations, it should be appreciated that the cradle 480 can be sized and shaped to separably receive at least a portion of the vaporizer device 300.

[0104] The one or more outlets 450 can be made of plastic, polypropylene, metal, and the like, and can have sharp or blunted ends. In one exemplary implementation, the one or moreoutlets 450 are blunt needles configured to respectively insert into each of the one or more ports 150 of the vaporizer cartridge 100. As discussed above and shown in FIG. 1A, each of the one or more valves 152 of the vaporizer cartridge 100 is configured to seal against a respective one of the one or more outlets 450 of the container housing 420. As such, the one or more outlets 450 of the container housing 420 form a fluid communication with each reservoir 140 within the reservoir body 130 of the vaporizer cartridge 100.

[0105] In some implementations, refill container 410 can also include a pump 460 disposed within the container housing 420 to establish fluid communication between the storage chamber 430 and the one or more outlets 450. Exemplary pumps include, but are not limited to, piston pumps, plunger pumps, low pressure deformable pumps, and the like, and can be manually or electrically operated. In certain implementations, the pump 460 can be a deformable pump with integrated actuator, as shown in FIGs. 12A-12C. When actuated (e.g., depressed), a headspace within the storage chamber 430 is compressed by the deformable pump causing a controlled pressure increase within the storage chamber 430. The increased pressure in the storage chamber 430 causes stored refill liquid vaporizable material to flow from the storage chamber 430 through the one or more outlets 450 of the container housing 420 and into each reservoir 140 while preventing overfilling the reservoir body 130. In some implementations, the refill container 410 can also include a vent 470 formed through the container housing 420. In certain implementations, the vent 470 can be integral to the pump 460, as shown in FIG. 12A. Vent 470 can provide fluid communication between the storage chamber 430 and atmosphere to provide a path for air to enter the storage chamber 430 when the pump 460 is released while the vaporizer cartridge 100 is connected to the one or more outlets 150.

[0106] In some implementations, the refill container 410 can also include a cover 490 configured to couple to the container housing 420. While the cover 490 shown in FIGs. 12A-12C is separable from the container housing 420, in other implementations, the cover can be pivotably coupled to the container housing 420. As such, the refill container 410 with cover 490 can also be configured to store the vaporizer device 100 when not in use (e.g., for transport or storage), as shown in FIG. 12 A.

[0107] To begin refilling, the cover 490 (if present) is removed or pivoted into an open position to expose the cradle 480. The vaporizer cartridge 100 of the vaporizer device 300 is thereafter aligned with the one or more outlets 450 of the refill interface within the cradle 480 and coupled thereto by respectively inserting the one or more outlets 450 of the refill container 410 into the one or more ports 150 of the vaporizer cartridge 100 to establish fluidcommunication with the reservoir(s) 140. The pump 460 can thereafter actuated to cause stored refill liquid vaporizable material to flow from storage chamber 430 into the reservoir(s) 140 of the vaporizer cartridge 100. An exemplary refill liquid flow-path is shown in FIG. 4A, wherein refill liquid vaporizable material flows from the one or more outlets 450 of the refill container 410 through the one or more ports 150 of the vaporizer cartridge 100. The refill liquid vaporizable material continues past each of the one or more liquid feed channels 180 and into the reservoir(s) 140 (i.e., each of the one of more fluid channels 134 of the reservoir body 130). Continued actuation of the pump 460 causes refill liquid vaporizable material to fill each reservoir 140 until fill resistance caused by the fluidic restrictions created by corresponding end stops 172 and overflow channels 174 in fluid communication with the reservoirs 140 occurs. This ensures that the reservoirs 140 are not overfilled during the refilling process and the vaporizer cartridge 100 can be refilled from any fill state.Terminology

[0108] When a feature or element is herein referred to as being “on” another feature or element, it can be directly on the other feature or element or intervening features and / or elements can also be present. In contrast, when a feature or element is referred to as being “directly on” another feature or element, there are no intervening features or elements present. It will also be understood that, when a feature or element is referred to as being “connected”, “attached” or “coupled” to another feature or element, it can be directly connected, attached or coupled to the other feature or element or intervening features or elements can be present. In contrast, when a feature or element is referred to as being “directly connected”, “directly attached” or “directly coupled” to another feature or element, there are no intervening features or elements present.

[0109] Although described or shown with respect to one implementation, the features and elements so described or shown can apply to other implementations. It will also be appreciated by those of skill in the art that references to a structure or feature that is disposed “adjacent” another feature can have portions that overlap or underlie the adjacent feature.

[0110] Terminology used herein is for the purpose of describing particular implementations and implementations only and is not intended to be limiting. For example, as used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0111] In the descriptions above and in the claims, phrases such as “at least one of’ or “one or more of’ may occur followed by a conjunctive list of elements or features. The term “and / or” may also occur in a list of two or more elements or features. Unless otherwise implicitly or explicitly contradicted by the context in which it used, such a phrase is intended to mean any of the listed elements or features individually or any of the recited elements or features in combination with any of the other recited elements or features. For example, the phrases “at least one of A and B;” “one or more of A and B;” and “A and / or B” are each intended to mean “A alone, B alone, or A and B together.” A similar interpretation is also intended for lists including three or more items. For example, the phrases “at least one of A, B, and C;” “one or more of A, B, and C;” and “A, B, and / or C” are each intended to mean “A alone, B alone, C alone, A and B together, A and C together, B and C together, or A and B and C together.” Use of the term “based on,” above and in the claims is intended to mean, “based at least in part on,” such that an unrecited feature or element is also permissible.

[0112] Spatially relative terms, such as “forward”, “rearward”, “under”, “below”, “lower”, “over”, “upper” and the like, may be used herein for ease of description to describe one element or feature’s relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is inverted, elements described as “under” or “beneath” other elements or features would then be oriented “over” the other elements or features. Thus, the exemplary term “under” can encompass both an orientation of over and under. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Similarly, the terms “upwardly”, “downwardly”, “vertical”, “horizontal” and the like are used herein for the purpose of explanation only unless specifically indicated otherwise.

[0113] Although the terms “first” and “second” may be used herein to describe various features / elements (including steps), these features / elements should not be limited by these terms, unless the context indicates otherwise. These terms may be used to distinguish one feature / element from another feature / element. Thus, a first feature / element discussed below could be termed a second feature / element, and similarly, a second feature / element discussed below could be termed a first feature / element without departing from the teachings provided herein.

[0114] As used herein in the specification and claims, including as used in the examples and unless otherwise expressly specified, all numbers can be read as if prefaced by the word“about" or “approximately," even if the term does not expressly appear. The phrase “about” or “approximately" may be used when describing magnitude and / or position to indicate that the value and / or position described is within a reasonable expected range of values and / or positions. For example, a numeric value can have a value that is + / - 0.1% of the stated value (or range of values), + / - 1% of the stated value (or range of values), + / - 2% of the stated value (or range of values), + / - 5% of the stated value (or range of values), + / - 10% of the stated value (or range of values), etc. Any numerical values given herein should also be understood to include about or approximately that value, unless the context indicates otherwise. For example, if the value “10” is disclosed, then “about 10” is also disclosed. Any numerical range recited herein is intended to include all sub-ranges subsumed therein. It is also understood that when a value is disclosed that “less than or equal to” the value, “greater than or equal to the value” and possible ranges between values are also disclosed, as appropriately understood by the skilled artisan. For example, if the value “X” is disclosed the “less than or equal to X” as well as “greater than or equal to X” (e.g., where X is a numerical value) is also disclosed. It is also understood that the throughout the application, data is provided in a number of different formats, and that this data, represents endpoints and starting points, and ranges for any combination of the data points. For example, if a particular data point “10” and a particular data point “15” are disclosed, it is understood that greater than, greater than or equal to, less than, less than or equal to, and equal to 10 and 15 are considered disclosed as well as between 10 and 15. It is also understood that each unit between two particular units are also disclosed. For example, if 10 and 15 are disclosed, then 11, 12, 13, and 14 are also disclosed.

[0115] Although various illustrative implementations are described above, any of a number of changes can be made to various implementations without departing from the teachings herein. For example, the order in which various described method steps are performed may often be changed in alternative implementations, and in other alternative implementations, one or more method steps may be skipped altogether. Optional features of various device and system implementations may be included in some implementations and not in others. Therefore, the foregoing description is provided primarily for exemplary purposes and should not be interpreted to limit the scope of the claims.

[0116] One or more aspects or features of the subject matter described herein can be realized in digital electronic circuitry, integrated circuitry, specially designed application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) computer hardware, firmware, software, and / or combinations thereof. These various aspects or features can include implementation in one or more computer programs that are executable and / orinterpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device. The programmable system or computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other.

[0117] These computer programs, which can also be referred to programs, software, software applications, applications, components, or code, include machine instructions for a programmable processor, and can be implemented in a high-level procedural language, an object-oriented programming language, a functional programming language, a logical programming language, and / or in assembly / machine language. As used herein, the term “machine-readable medium’’ refers to any computer program product, apparatus and / or device, such as for example magnetic discs, optical disks, memory, and Programmable Logic Devices (PLDs), used to provide machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term “machine-readable signal” refers to any signal used to provide machine instructions and / or data to a programmable processor. The machine-readable medium can store such machine instructions non-transitorily, such as for example as would a nontransient solid-state memory or a magnetic hard drive or any equivalent storage medium. The machine-readable medium can alternatively or additionally store such machine instructions in a transient manner, such as for example, as would a processor cache or other random access memory associated with one or more physical processor cores.

[0118] The examples and illustrations included herein show, by way of illustration and not of limitation, specific implementations in which the subject matter may be practiced. As mentioned, other implementations may be utilized and derived there from, such that structural and logical substitutions and changes may be made without departing from the scope of this disclosure. Such implementations of the inventive subject matter may be referred to herein individually or collectively by the term “invention” merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept, if more than one is, in fact, disclosed. Thus, although specific implementations have been illustrated and described herein, any arrangement calculated to achieve the same purpose may be substituted for the specific implementations shown. This disclosure is intended to coverany and all adaptations or variations of various implementations. Combinations of the above implementations, and other implementations not specifically described herein, will be apparent to those of skill in the art upon reviewing the above description. Use of the term “based on,” herein and in the claims is intended to mean, “based at least in part on,” such that an unrecited feature or element is also permissible.

[0119] The subject matter described herein can be embodied in systems, apparatus, methods, and / or articles depending on the desired configuration. The implementations set forth in the foregoing description do not represent all implementations consistent with the subject matter described herein. Instead, they are merely some examples consistent with aspects and implementations related to the described subject matter. Although a few variations have been described in detail herein, other modifications or additions are possible. In particular, further features and / or variations can be provided in addition to those set forth herein. For example, the implementations described herein can be directed to various combinations and subcombinations of the disclosed features and / or combinations and subcombinations of several further features disclosed herein. In addition, the logic flows depicted in the accompanying figures and / or described herein do not necessarily require the particular order shown, or sequential order, to achieve desirable results. Other implementations may be within the scope of the following claims.

Claims

WHAT IS CLAIMED IS:

1. A vaporizer cartridge comprising:a cartridge housing;a reservoir body positioned within the cartridge housing, the reservoir body comprising:one or more channels, wherein each of the one or more channels forms a reservoir configured to store a vaporizable material; andone or more end stops formed at a distal end of each reservoir and configured to balance fluid flow in each reservoir relative to one another;a wick positioned at a distal end of the reservoir body and in fluid communication with each reservoir; andone or more ports formed through the cartridge housing and in fluid communication with each reservoir.

2. The vaporizer cartridge of claim 1, wherein each reservoir is independent of another reservoir within the reservoir body.

3. The vaporizer cartridge of claim 1 or claim 2, wherein each reservoir is in fluid communication with at least one port and at least one end stop.

4. The vaporizer cartridge of any one of claims 1 to 3, further comprising one or more air vents formed through the cartridge housing and in fluid communication with each end stop.

5. The vaporizer cartridge of claim 4, further comprising one or more overflow channels formed in the reservoir body, each of the one or more overflow channels providing fluid communication between each end stop and each air vent.

6. The vaporizer cartridge of claim 5, wherein each of the one or more overflow channels is formed between a groove in an outer surface of the reservoir body and an inner surface of the cartridge housing.

7. The vaporizer cartridge of any one of claims 1 to 6, wherein the one or more ports are positioned on a first side of the cartridge housing.

8. The vaporizer cartridge of claim 7, wherein the one or more air vents are positioned on a second side of the cartridge housing, and wherein the first side opposes the second side.

9. The vaporizer cartridge of any one of claims 1 to 8, further comprising one or more valves, each valve at least partially inserted into a respective port of the cartridge housing and configured to selectively seal each of the one or more ports.

10. The vaporizer cartridge of claim 9, wherein the one or more valves are flat elastomeric valves or duckbill valves.

11. The vaporizer cartridge of any one of claims 1 to 10, wherein the reservoir body further comprises one or more liquid feed channels formed through the reservoir body and providing the fluid communication between each reservoir and the wick.

12. The vaporizer cartridge of any one of claims 1 to 11, wherein each of the one or more channels is formed through the reservoir body, and wherein each of the one or more channels forms a respective reservoir between opposing inner surfaces of the cartridge housing.

13. The vaporizer cartridge of any one of claims 1 to 12, wherein each of the one or more channels forms the respective reservoir between an outer surface of the reservoir body and an inner surface of the cartridge housing.

14. The vaporizer cartridge of any one of claims 1 to 13, wherein each of the one or more channels extends along a longitudinal axis of the reservoir body and is substantially parallel to one another.

15. The vaporizer cartridge of any one of claims 1 to 14, wherein the reservoir body further comprises a plurality of microfluidic features protruding from the reservoir body into each of the one or more channels, wherein each of the plurality of the microfluidic features is spaced apart from an adjacent microfluidic feature.

16. The vaporizer cartridge of claim 15, wherein each of the plurality of microfluidic features is substantially parallel to an adjacent microfluidic feature.

17. The vaporizer cartridge of claim 15 or claim 16, wherein each of the plurality of microfluidic features has a substantially uniform protruding length.

18. The vaporizer cartridge of any one of claims 15 to 17, wherein each of the plurality of microfluidic features has varied protruding lengths.

19. The vaporizer cartridge of any one of claims 15 to 18, wherein the plurality of microfluidic features form constriction points along a length of the one or more channels, and wherein each constriction point has a smaller hydraulic diameter than a hydraulic diameter of a portion of the one or more channels between the constriction points.

20. The vaporizer cartridge of claim 19, wherein each constriction point is defined by a plurality of projections extending into the one or more channels, wherein a first projection of the plurality of projections has a maximum width that differs from a maximum width of a second projection of the plurality of projections.

21. The vaporizer cartridge of claim 20, wherein each of the plurality of projections has a varying shape.

22. The vaporizer cartridge of any one of claims 15 to 21, wherein a distance between each of the plurality of microfluidic features is substantially uniform.

23. The vaporizer cartridge of any one of claims 15 to 21, wherein a distance between each of the plurality of microfluidic features varies.

24. The vaporizer cartridge of any one of claims 1 to 23, wherein each of the one or more channels is formed in a serpentine shape extending along a longitudinal axis of the reservoir body.

25. The vaporizer cartridge of any one of claims 1 to 24, wherein each reservoir is refillable via the one or more ports.

26. The vaporizer cartridge of any one of claims 1 to 25, further comprising an atomizer positioned within the cartridge housing and in contact with the wick.

27. The vaporizer cartridge of claim 26, wherein the atomizer comprises a heating element contacting at least a portion of the wick.

28. The vaporizer cartridge of claim 27, wherein the heating element comprises one or more tines contacting at least a portion of the wick.

29. The vaporizer cartridge of claim 27 or claim 28, wherein the atomizer further comprises an atomizer housing positioned within the cartridge housing, and wherein at least a portion of the wick and at least a portion of the heating element are disposed within the atomizer housing.

30. The vaporizer cartridge of claim 29, wherein at least a portion of the heating element protrudes out of the atomizer housing.

31. The vaporizer cartridge of claim 29 or claim 30, wherein the atomizer housing comprises one or more air inlets formed therethrough and configured to provide a path for air to enter an internal airflow path within the vaporizer cartridge.

32. The vaporizer cartridge of any one of claims 1 to 31, further comprising a vapor channel disposed therethrough, the vapor channel providing a fluid communication between the wick and an outlet of the vaporizer cartridge.

33. The vaporizer cartridge of claim 32, wherein the vapor channel has a tapered crosssection.

34. The vaporizer cartridge of claim 32 or claim 33, wherein the reservoir body further comprises a vapor outlet in fluid communication with the vapor channel.

35. The vaporizer cartridge of claim 34, wherein at least a portion of the vapor channel is inserted into the vapor outlet.

36. The vaporizer cartridge of any one of claims 32 to 35, wherein the vapor channel comprises a baffle configured to cause mixing of air and vaporized material within the vapor channel.

37. The vaporizer cartridge of any one of claims 32 to 36, wherein the cartridge housing has a cross -section that tapers towards the outlet of the cartridge.

38. The vaporizer cartridge of any one of claims 1 to 37, wherein the reservoir body further comprises one or more tabs extending therefrom, the one or more tabs configured to engage the wick.

39. A vaporizer device, comprising:a vaporizer cartridge comprising:a cartridge housing;a reservoir body positioned within the cartridge housing, the reservoir body comprising:one or more channels, wherein each of the one or more channels forms a reservoir configured to store a vaporizable material; andone or more end stops formed at a distal end of each reservoir and configured to balance fluid flow in each reservoir relative to one another; a wick positioned at a distal end of the reservoir body and in fluid communication with each reservoir; andone or more ports formed through the cartridge housing and in fluid communication with each reservoir; anda vaporizer body comprising a receptacle configured to insertably receive the vaporizer cartridge.

40. The vaporizer device of claim 39, wherein the vaporizer cartridge is separable from the vaporizer body.

41. The vaporizer device of claim 39 or claim 40, wherein the vaporizer cartridge further comprises one or more air vents formed through the cartridge housing and in fluid communication with each end stop.

42. The vaporizer device of claim 41, wherein the vaporizer cartridge further comprises one or more overflow channels formed in the reservoir body, each of the one or more overflow channels providing fluid communication between each end stop and each air vent.

43. The vaporizer device of any one of claims 39 to 42, wherein each reservoir of the vaporizer cartridge is in fluid communication with at least one port and at least one end stop.

44. The vaporizer device of any one of claims 39 to 43, wherein the vaporizer cartridge further comprises one or more valves each at least partially inserted into a respective port of the cartridge housing and configured to selectively seal each of the one or more ports.

45. The vaporizer device of claim 44, wherein the one or more valves are flat elastomeric valves or duckbill valves.

46. The vaporizer device of any one of claims 39 to 45, wherein each reservoir is refillable via the one or more ports.

47. The vaporizer device of any one of claims 39 to 46, wherein the reservoir body of the vaporizer cartridge further comprises one or more liquid feed channels formed through the reservoir body and providing the fluid communication between each reservoir and the wick.

48. The vaporizer device of any one of claims 39 to 47, wherein the reservoir body of the vaporizer cartridge further comprises a plurality of microfluidic features protruding from the reservoir body into each of the one or more channels, wherein each of the plurality of the microfluidic features is spaced apart from an adjacent microfluidic feature.

49. The vaporizer device of any one of claims 39 to 48, further comprising an atomizer in fluid communication with the wick of the vaporizer cartridge.

50. The vaporizer device of claim 49, wherein the atomizer is positioned within the cartridge housing and in contact with the wick.

51. The vaporizer device of claim 49 or claim 50, wherein the atomizer comprises a heating element contacting at least a portion of the wick.

52. The vaporizer device of any one of claims 49 to 51, wherein the atomizer further comprises an atomizer housing, and wherein at least a portion of the wick of the vaporizer cartridge is disposed within the atomizer housing.

53. The vaporizer device of claim 52, wherein the atomizer housing comprises one or more air inlets formed therethrough and configured to provide a path for air to enter an internal airflow path within the vaporizer cartridge.

54. A vaporizer system comprising:the vaporizer device of any one of claims 39 to 53; anda container configured to store a refill liquid vaporizable material, wherein at least a portion of the stored refill liquid vaporizable material is transferred into the reservoir body of the vaporizer cartridge through at least one of the one or more ports.

55. The vaporizer system of claim 54, wherein the container comprises:a container housing;a storage chamber disposed within the container housing and configured to store the refill liquid vaporizable material; andone or more outlets formed through the container housing, each outlet in alignment with a respective port of the vaporizer cartridge upon coupling of the vaporizer device to the container.

56. The vaporizer system of claim 54 or claim 55, wherein the refill volume is larger than the volume of vaporizable material stored in the vaporizer cartridge.

57. The vaporizer system of claim 55 or claim 56, wherein the container further comprises a pump disposed within the container housing, wherein the pump is in fluid communication with the storage chamber and each of the one or more outlets.

58. The vaporizer system of claim 57, wherein the container further comprises a vent, wherein the vent provides a fluid communication between the storage chamber and atmosphere.

59. The vaporizer system of claim 57 or claim 58, wherein the pump comprises an actuator configured to cause the stored refill liquid vaporizable material to flow from the container to the one or more outlets.

60. The vaporizer system of any one of claims 54 to 59, wherein the container housing comprises a cradle configured to receive and couple to the vaporizer device.

61. The vaporizer system of any one of claims 54 to 60, wherein the container further comprises a cover configured to couple to the container housing.

62. The vaporizer system of claim 61, wherein the cover is pivotably coupled to the container housing.

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