Patent Application
20210121364
Not applicable to this application
Not applicable to this application
The Four-Way Pill Splitter is a simple device used to cut circular pills into four smaller equal-sized pieces. The device is intended for use within the medical field and for personal use at home. Prior to this device, only two-way pill splitters have been available on the market. With two-way pill splitters, a user who has been prescribed to take a ¼ of a pill must cut the pill in half using a two-way splitter, rotate the split pill, and then split the pill a second time to obtain ¼ of the original dosage. A four-way pill splitter has been patented (U.S. Pat. No. 6,968,987B1) but that four-way pill splitter lacks versatility by only providing a means to cut a specific sized pill solely. That four-way pill splitter additionally requires the use of three disconnected parts which can be cumbersome and susceptible to loss.
The Four-Way Pill Splitter was invented out of a need to lower the dosage of a prescribed medication by ¼. The device improved on current technology by reducing the splitting effort from three actions (cutting into ½, rotating, and cutting the half in half again to achieve ¼) into one action (cutting the pill into ¼). The Four-Way Pill Splitter also eliminates the human error inherent to rotating the halves of a pill that has already been split. This is a particular benefit to individuals with dexterity challenges who, unassisted, aren't able to handle and rotate small pills that have already been split in order to then split them again.
The Four-Way Pill Splitter is a device that cuts a circular pill of any size into ¼ with one action. It works by placing a pill in the center of an inverted cone-shaped insert, then compressing the top housing onto the bottom housing—the top housing being a lever arm extending radially from a fixed hinge connecting the two housings—until the two housings are coincident. Once the top hinge is returned to its starting position, the inverted cone-shaped insert will contain the pill now split into four quarters.
In accordance to the first aspect of the device, the Four-Way Pill Splitter is made up of an upper and lower housing connected by a rotating hinge.
In accordance with the second aspect of the device, the upper housing contains three cutting blades oriented to meet at a single vertex and form four 90-degree angles.
In accordance with the third aspect of the device, the lower housing contains an inverted cone-shaped insert, made of a rubber-like elastomer, that uses friction to secure a pill in place once the pill is placed into the device.
In accordance with the fourth aspect of the device, the inverted cone-shaped insert and the lower housing contain slits for the blades from the upper housing to fit within when the device is in the closed position.
The Four-Way Pill Splitter device is made of out an upper housing 1 and a lower housing 2. Both housings are made out of plastic. Within the upper housing are three sharp blades: a first blade 3, a second blade 4, and a third blade 5. The first blade 3 and the third blade 5 are placed so that they are coplanar with their sharp edges colinear. The third blade 4 is placed in between the first two blades but is rotated to be perpendicular. The first blade 3 and the third blade 5 abut the second blade 4 at its midpoint. The edges of all three blades are coplanar and form a single vertex 6 containing four 90-degree angles. To make a convenient lever arm around the device's fulcrum 7, the first blade 3 and the third blade 5 are placed parallel to the lever arm while the second blade 4 is placed perpendicular to the lever arm. The blades sit in snugly designed pockets 8 within the upper housing 1. The vertex of the blades 6 is designed to strike the inverted cone-shaped insert 9 within the lower housing 2 (described below).
The lower housing is 2 contains an inverted cone-shaped insert 9. The insert is made out of a medically safe or food safe rubber-like elastomer material. The lower housing contains two slits: the short slit 10 which accommodates the second blade 4 and the long slit 11 which accommodates the first blade 3 and the third blade 5 when the device is in the closed position. Radiating out from the intersection of the slits is the insert 9 which is an inverted cone in shape. The shape of the insert allows any size pill to rest at the elevation where the diameter of the pill equals the diameter of the inverted cone. The insert is preferably made from a rubber-like elastomer material because these materials have a higher coefficient of friction than most plastics. This creates more friction between the pill and the device to hold the pill in place more securely during the splitting action. This leads to a cleaner cut from the blades.
The peg-and-hole hinge 7 is positioned on the housings so that 1) the collinear edges of the first blade 3 and the third blade 5 are also collinear to the center of the hinge 7 and 2) the intersecting vertex 6 of the blades will just strike the vertex of the inverted cone-shaped insert 9 at when the device is in a closed position. These constraints ensure the flattest approach for the blades toward the pill during the splitting action. This reduces uneven forces being applied to the pill which can cause it to shatter instead of split.
