The present disclosure relates generally to smoking-cessation methods and devices, and more specifically to vaporization devices used in smoking cessation.
Vaporizer devices as cigarette alternatives are known in the art. These devices are usually battery-operated, handheld devices configured to simulate smoking a cigarette. Rather than burning tobacco, some of these devices heat liquid solutions that can be inhaled and exhaled in a vapor. Such liquid solutions may deliver varying amounts of nicotine or other drugs.
Vaporizer devices usually comprise a device body and a cartridge. The body usually employs an electronic heating assembly adapted to heat an evaporable material and to produce an inhalable vapor.
In some devices, two heater contacts each have a plate coupled to each side. Device heaters usually have a wick and a resistive heating element in contact with the wick and the two plates. The device body usually comprises a cartridge receptacle that, once inserted into the device body, couples its heater contacts with those in the body. An LED indicator shows device's state.
An externally insulated, battery-powered heater surrounds the vaporization chamber of an exemplary device. The vaporization chamber is typically covered by a removable mouthpiece. A microcontroller usually regulates temperature in the vaporization chamber.
Bluetooth Low Energy (Bluetooth LE or BLE) is a wireless personal area network technology that uses less power than Classic Bluetooth while operating in a similar range. It is used in healthcare, fitness, security, and home entertainment devices.
Ambient backscatter technology uses existing TV and cellular signals to provide the power and medium for battery-less communications. Devices using an ambient backscatter system have antennas that pick up TV or cellular signals and convert them into electricity, which are then reflected to and received by other devices with similar antennas. Ambient backscatter technology lets devices communicate without being turned on.
Near-field communication (NFC) is a set of communication protocols that enable two electronic devices to establish communication by bringing them within 1.5 inches of each other. NFC devices are used in contactless payment systems, similar to those used in credit cards and electronic ticket smart cards and allow mobile payment to replace or supplement these systems.
ZigBee is a specification for a suite of communication protocols used to assemble personal area networks with small, low-power digital radios. It is used in home automation, medical-device data collection, and other low-power, low-bandwidth needs, designed for small scale projects which need wireless connection. ZigBee is a low-power, low-data-rate, and close proximity (i.e., personal area) wireless, ad-hoc network. Applications include wireless light switches, home energy monitors, traffic-management systems, and other consumer and industrial equipment that requires short-range, low-rate wireless data transfer. It can transmit over distances 10-100 meters in line-of-site, and over longer distances through a mesh network.
Polyphenylene sulfide (PPS) is a semi-crystalline polymer that can withstand flame heat and resist chemical treatment. It is used in automotive, electronic and mechanical parts.
Polyether ether ketone (PEEK) is an organic thermoplastic polymer used in engineering applications in automotive, aerospace and other industries.
In the context of this disclosure “substance” refers to a drug or supplement. For clarity, the apparatus and method of the disclosure may refer to the use of nicotine as a substance in a vaporizable liquid to be vaporized and inhaled. Nicotine is used as a substance in the instant example embodiment, and not intended to be limiting. In this disclosure “inert ingredients,” “inert substance” or “inert vapor” refers to a vaporizable substance that does not contain a drug. It may contain flavorings and the like.
A smoking-cessation method and device includes a vaporization device and smoking-cessation method.
The device has a first body, also referred to as a pod assembly, and a second body, also referred to as a base assembly.
The first body has a top, bottom, interior and exterior. The top exterior is a mouthpiece or cover that has in its center an orifice for inhalation. In the interior, a pod assembly comprises a first pod, a second pod, and a mixing chamber. Each pod has at least one wick. Each pod is a consumable, interchangeable component. The pods' upper sections reside in the first body and their lower sections reside in the second body (the base assembly). The pods are in fluid and electrical communication with the base assembly. Each pod holds a capsule tank which contains a measured amount of vaporizable liquid. Vaporizable liquid in each cartridge is moved by capillary action into each wick. Each wick is connected to a heating coil that when heated produces vapor. Each wick is disposed proximal to the orifice. Vapor is pulled through the orifice during inhalation.
The second body has a top, bottom, interior and exterior. The top of the exterior is a housing into which the first body is inserted, so that the bases of the pods are held partially in the second body. The interior of the second body holds electronic components. including, a battery, a printed circuit board, a flexible printed circuit, and a pressure sensor.
A firewall gasket is disposed between the pod assembly and the base assembly. The firewall gasket provides a sealed transition for electrical connections and connects the atmospheric pressure sensor to the pod assembly via a conduit. An air-intake orifice provides a relatively narrow inlet for incoming air that passes the conduit. The atmospheric pressure sensor senses a change in pressure caused by the user inhaling through the air-intake orifice, and signals the microprocessor to initiate the vaporization process.
A processor on the printed circuit board controls each heating coil individually. A defined voltage over a coil for a set time produces vapor. Specific amounts of a substance such as nicotine may be measured and dispensed in vapor form as part of a smoking-cessation regimen.
The atmospheric pressure sensor measures changes in pressure in order to count the number of times the apparatus is used. A secondary conduit extends from the pressure sensor on the printed circuit board, into the pod assembly where it measures atmospheric pressure changes that occur in the pod assembly when a user reduces pressure via inhalation through the mouthpiece. Changes in atmospheric pressure are measured and recorded as a means of counting the number of inhalations or “hits.” A substantial change in atmospheric pressure may be understood to connote inhalation of vapor from the apparatus.
Some embodiments employ a method for facilitating smoking cessation. In these embodiments a processor stores machine-readable instructions that control the amount of vapor produced from each pod in each series of hits. Initial hits may include mostly vapor from the nicotine-containing cartridge and comparatively less vapor from the cartridge containing a vaporizable liquid without nicotine; eventually the amount of nicotine vaporized will be reduced and the amount of non-drug liquid vaporized will increase until the user reduces his or her dependence on nicotine. This gradual reduction of nicotine is referred to as regression. In one embodiment, regression is controlled according to a prescribed regimen of drug/non-drug liquids that is configured and administered by a physician or other administrator. One skilled in the art understands that any vaporizable drug-containing liquid may be used in this apparatus and method; nicotine is used here as an example.
In some embodiments the duration of a hit (or “hit duration,”) is measured in seconds; this duration is preferably two seconds, but may be between 0.5 and 4 seconds. In an example embodiment, a cessation regimen may enable two-second hits during the regimen's control period. In this period the heating element in the nicotine-containing pod is activated for two seconds, while the heating element in the inert-ingredients pod is not activated.
A regression plan is input to the device's microcontroller as machine-readable instructions. The plan may, during the two seconds of a hit, reduce the amount of heat to a heating element in the nicotine-containing pod while increasing the amount of heat to the heating element in the inert-ingredients pod.
An example regimen includes an initial period during which no regression takes place. Throughout the regimen, following the initial period, the nicotine dosage changes daily according to a mathematical formula that drives computer-readable instructions that control the apparatus to deliver less nicotine and more inert ingredients over time. The duration of each hit remains constant throughout the regimen.
In another embodiment the above-mentioned prescription may accommodate a limited-duration deviation from the regimen. For example, a user may customarily take a given number of hits per day and may be in the 20th day of a 90-day regimen. If for example on the 20th day a user takes considerably more than the customary number of daily hits, the program may accept the deviation and initiate adjustment by alerting a physician or other administrator. The administrator may, in this example, extend the end date to accommodate the deviation, and/or alter the dosage.
In another embodiment, a program alters a regimen to account for a deviation. It does so by looking up the number of days on which the number of hits deviated substantially from the average, and adding that number of days to the duration of the regimen.
In
Referring to
Vaporizable liquid is drawn by capillary action through the wick 122 (
One skilled in the art understands that a specific voltage over a coil 123 for a specific time will produce an amount of heat to produce a replicable amount of vapor. In this manner measured doses of a substance such as nicotine may be delivered in a vapor.
In the base assembly 121 (
A housing insert 136 is a structure for containing a printed circuit board 128, a battery 132 and a flexible printed circuit 130. The housing further provides an attachment 133 for the pods 114/116. The pods 114/116 may attach by a snap fit, magnetic contact or similar means of removable attachment 133. The flexible printed circuit 130 joins the charge port 134 to the printed circuit board 128 for charging the battery 132, and connects the printed circuit board 128 to the electrical connection structures 131 that power the coils which heat the wicks 122 (
Some embodiments offer a method of facilitating smoking cessation by gradual reduction in nicotine delivery. A processor stores machine-readable instructions that control the amount of vapor produced by each pod in each series of hits. Initial hits may include mostly vapor from a first pod 114 which in this example stores a vaporizable liquid containing nicotine; and comparatively less vapor from a second pod 116, which in this example contains a vaporizable non-nicotine liquid. Over a period of time the amount of nicotine-containing vapor of each hit supplied by the liquid in the first pod 114 decreases, while the amount of nicotine-free vapor, supplied by the liquid in the second pod 116, increases. In one example a hit lasting two seconds delivers 1.8 seconds of vapor from the nicotine-containing pod and 0.2 seconds of non-nicotine-containing vapor from the other pod. Over time the sequence progresses until a hit lasting two seconds has no nicotine-containing vapor and 100 percent non-nicotine-containing vapor.
One skilled in the art understands that the physical habit of taking a number of hits per day may remain substantially unchanged while the amount of nicotine contained in each hit may be gradually reduced over time. The gradual reduction of the substance—in this example, nicotine—is referred to as regression. In one embodiment, regression occurs according to a regimen that is prescribed and administered by a physician.
In yet another embodiment the above-mentioned prescription may accommodate a limited-duration deviation from the regimen. For example, a user may customarily take a given number of hits per day and may be in the nth day of a 90-day regression. If for example on the 20th day a user takes considerably more than the customary number of daily hits, the program may accept the deviation and adjust to accommodate the deviation by alerting a physician or other administrator. The administrator may, in this example, restart the regimen according to the instructions for the most recent day on which the average number of hits (or substantial equivalent) were taken, and extend the end date to accommodate the deviation. In one embodiment, the program alters a regimen to account for a deviation. It does so by counting the number of days on which the number of hits deviated substantially from the average, and adding that number of days to the duration of the regimen.
A microcontroller 252 stores machine-readable instructions that determine an amount and duration of power to be delivered from the battery 256 to each heating coil 262/264 to reach target values. Via network interface 254, a user may update these target values by inputting new values, which are read by a microcontroller 252.
A first power controller 255 controls an amount of power to a first heating coil 262 according to instructions received from the microcontroller 252. Temperature resistance is measured in the coil, and the target value 266/268 is recognized by the microcontroller, which calculates the difference (TV-TR). The process loops, thus measuring the power delivered to the coil as well as the heat generated by the coil. A second power controller 260 controls the amount of power provided to a second heating coil 264 according to instructions received from the microcontroller 252. Power and heat are similarly controlled in the second heating coil 264.
An example regimen employs a linear formula which includes a baseline period (during which no regression occurs), followed by a period of regression which provides a series of changing daily doses. A regression formula is as follows:
t
e
=d
0
/m+(t0+c)
Where (d0) is the initial dose and (t0) is the start date of the cessation regimen, and (c) is the control period. Where (m) represents a constant that determines the slope of a regression curve. The higher the absolute value of (m), the more rapid the regression. If the end date (te) is changed, (m) is changed. Alternatively, if a control period (c) is changed from a 90-day period to a 30-day period, the slope (m) will become steeper.
The nicotine dosage changes daily throughout the regimen. The nicotine dose for the nth day is calculated according to the following formula:
d
n
=d
0
−m*(tn−(t0+c))
Where (dn) is the current dose and (tn) is the nth day of the program.
The program changes the dosage in only the nicotine-containing pod. For this reason the pods are independently replaceable.
In an example program, during the first phase of a smoking-cessation regimen, the nicotine dosage in the nicotine pod will preferably diminish over time as a user is weaned from nicotine dependence. Accordingly, that cartridge will empty sooner than the non-nicotine cartridge. Toward the final phase of the regimen, the non-nicotine cartridge will empty more quickly than the nicotine-containing cartridge.
In another embodiment, the program calculates a daily dose using the aforementioned formula 374 based on number of hits. If the number of hits in the previous day is substantially equivalent to the average number of hits measured during the control period, the program continues. If the number of hits in the previous day is substantially greater than the average number of hits measured during the control period, the program changes the end date 378 by the number of days of deviation, and adds that number of days to the end date. The program then calculates a new slope 380 based on the new end date according to the linear formula.
An exponential regression algorithm provides a regimen having a non-linear regression schedule. An exponential regression algorithm uses the following formula:
D
n
=D
0
*e
k(tn−t0−c)
Where Dn is the nicotine dose on the nth day; D0 is the initial nicotine dose; e is a mathematical constant that is the base of the natural logarithm and is raised to the power of k, and where k is a constant that determines the slope of the graph that depicts the regression of the regimen. (tn) is the nth date of the program. The start date, i.e., when a user begins the nicotine-cessation regimen, is denoted by (t0).
A control period (c) represents the length of the initial period during which a baseline is established. During the control period a particular dose (D0) is delivered with each hit. In this manner the amount of nicotine in each hit is reduced according to a non-linear equation. In one example, k is a negative value. The greater the absolute value of k, the steeper the curve that governs the regression. In other words, a regression program with a k value of −0.15 will have a more gradual regression than that of a regression program with a k-value of −0.25. A regression program having a k-value of −0.25 is said to have a relatively steeper regression than that of regression program having a k-value of −0.15. In some embodiments the amount of nicotine use during the control period is used to set the value of k.
These descriptions demonstrate example embodiments and are not intended to be limiting.