the purpose of the invention is to provide an improved means of counting the number of doses taken or left in medicine taken through inhalation . inhalation medicines are commonly taken for asthma and treating other respiratory conditions . many of these medications contain certain steroids , and most recently insulin is being now being offered through inhalation . the medicine received by the patients is very important , and in many cases their life depends on the medication and the correct dose thereof . thus , there is a strong need for users to know how much of their medicine they have left and when to get a refill . the present invention is directed for this purpose . the present invention is an interchangeable and reusable counter , it is placed on top of the metal canister ( containing the inhalation medicine ) which sits inside the actuator . when the apparatus is depressed , the metal canister is also depressed into the actuator to dispense the inhalation medication . the digital counter will display the number of inhalations remaining or taken with each depression . in addition , the present invention allows the user to decide if they want to count up as they use the medicine , or if the want to count down from the maximum number of uses contained as indicated on the medication . [ 0048 ] fig1 shows the present invention as would be used by patients . the device is placed over the inhaler , 6 that contains the metal medicine cartridge , 5 . the device is secured around the inhaler by arms , 1 that extends outward from the digital counter screen , 7 . fig1 shows the downward movement of the sliding mechanism , 2 when the cap button , 4 is depressed , this occurs simultaneously with the release of the medication . [ 0049 ] fig2 displays a side perspective of the inhaler of fig1 . elements 2 , 1 , 4 and 5 are detailed . the sliding mechanism , 2 , refers to the range , which the device moves up and down during a depression along the inhaler , 6 . the inhaler , 6 , is held in place by arms that extend outward from the digital counter screen , 7 . the cap button , 4 , is depressed during inhalation . the button , 4 , activates the digital counter screen , 7 . the up and down range of the depression of the cap button , 4 , is also shown . numeral 5 refers to the top of the cartridge containing medicine . [ 0050 ] fig3 displays the device as attached to the inhaler from the rear perspective showing the digital counter screen , 7 and the sliding mechanism , 2 . fig3 points out the inhaler with varying barrel shapes , 6 and also the cartridge containing medicine , 5 . [ 0051 ] fig3 a shows the device unattached to the existing dispensing means , 5 and the medication metal canister , 5 . fig3 a illustrates the depressing mechanism or the cap button , 4 , the sliding mechanism , 2 the digital counter screen ; 7 and the arms that secure the device , 1 . [ 0052 ] fig4 shows the cap button , 4 on top of the metal medicine canister , 5 . fig4 also shows the sliding mechanism , 2 that acts as the spine of the button , 4 . the sliding mechanism allows the button , 4 to depress and release the medication and then to return to an un - depressed or resting state . [ 0053 ] fig5 shows a cross sectional view of the inhaler , 6 encircled by the arms , 1 of the device . [ 0054 ] fig6 shows the rear view of the device , displaying the cap button , 4 the arms , 1 as attached to the digital counter screen , 7 . fig6 a is a close up perspective of the cap , 4 as attached to the metal canister , 5 . fig6 b is a side perspective of fig6 displaying the cap , 4 and the arms , 1 and the digital counter , 7 and also the sliding mechanism , 2 . [ 0055 ] fig7 is a side perspective that shows the cap button , 4 the sliding mechanism , 2 and the digital counter screen , 7 in relation to each other . [ 0056 ] fig8 displays the rear view of the device . fig8 contains the sliding mechanism , 2 the digital counter screen , 7 and the arms , 1 that wrap around the inhaler for stability . inside of the digital display the battery , 9 is contained which allows for the digital counter screen , 7 to work . [ 0057 ] fig9 displays the device , as it would function placed on top of the metal medicine canister , 5 like a cap . although the figure shows the cap with a greater width the cap should be about the width of the metal canister so that it has a snug fit . the device is secured by the arms , 1 that wrap around the inhaler , 6 . the present invention works as such , the device is comprised of a cap button , 4 a sliding mechanism , 2 and arms , 1 that surround the inhaler , 6 and secure it . the button , 4 , is pressed during inhalation ; the device is allowed to move downward simultaneously with the inhaler apparatus because the sliding mechanism , 2 is adjusted to allow the button to move down along a groove . when the button , 4 is depressed , the sliding mechanism , 2 moves downward and makes contact with the battery floor , 9 and causes the counter to advance . this function repeats until all the doses of medication are finished . then when a refill is purchased the present invention can be removed from the inhaler , 6 and a new metal medicine canister can be inserted , 5 , and the present invention can be placed over the inhaler , 6 . an alternative to the above invention is to place the counter on the top of the device and have a recessed cap to facilitate placement of the thumb . fig1 displays a cap with a concave recess , 10 . inside of the cap is an electrical contact button , 11 an electrical contact membrane , 12 and a flexible membrane , 13 . connected to the flexible membrane , 13 is a solid push block , 14 that makes contact with the metal medicine canister , 5 and pushes the metal medicine canister , 5 downward and advances the counter . [ 0060 ] fig1 shows a detail of the cap with the concave recess , 10 for placement of the thumb .
the present invention is directed to an apparatus that allows patients who use inhalers to keep track of the number of doses they have or have left of their medicine . the present invention prevents patients from unknowingly running out of medicine and enables patients to promptly get a refill of their medication .