Automatically advancing pill regimen device

• US 5,664,697 A
• Filed: 10/31/1995
• Issued: 09/09/1997
• Est. Priority Date: 10/31/1995
• Status: Expired due to Term

• Current Assignee: Ortho Pharmaceutical Corporation (Johnson & Johnson)
• Original Assignee: Ortho Pharmaceutical Corporation (Johnson & Johnson)
• Inventors: Frazier, Thomas A., Lambelet, Lawrence E. Jr.
• Primary Examiner(s): SKAGGS JR, H GRANT
• Application Number:
  US08/551,223
• Time in Patent Office: 679 Days
• Field of Search: 221/82, 221/83, 221/86, 221/89, 221/91, 221/4, 221/5, 221/282, 206/533, 206/538, 206/539
• US Class Current: 221/5
• CPC Class Codes: B65D 2583/0409 of dates or follow-numbers
• CPC Class Codes: B65D 83/0454 the whole forming a circular container with rotating parts B65D83/0463 takes precedence

Abstract

The present invention is directed to a self-actuating dispenser for a regimen of pills satisfying the needs discussed herein above. A self-actuating dispenser having the features of the present invention comprises a base, a pill container, and a means for cyclically indexing the pill container with respect to the base. The base has a pill exit aperture. The pill container, which houses the pills in individual compartments or cells, is movably attached to the base such that any pill cell can be aligned with the pill exit aperture. The pill cells are provided with open bottoms for loading and dispensing which are covered over by the base when attached thereto. The means for cyclically indexing provides that each pill cell in turn is brought into alignment with the pill exit aperture thereby singly dropping the resident pills in a series of dispensing cycles.

Claims

1. A self-actuating dispenser for a regimen of pills comprising:

(a) a base having a pill exit aperture;

(b) a pill container having pill cells for the containment of pills therein, the pill container movably attached to the base such that any pill cell can be aligned with the pill exit aperture, the pill cells having open bottoms for loading and unloading which are adjacent to the base when attached thereto; and

(c) means for cyclically indexing the pill container with respect to the base such that each pill cell in turn is brought into alignment with the pill exit aperture thereby dropping resident pills in a said pill cell from the dispenser; and

wherein the means for cyclically indexing comprises a set of vertical saw teeth attached to a circular wall of the pill container concentric with the pill cell array, the saw teeth and pill cells in one to one correspondence with respect to number and regularity, each tooth having an upward-facing ramp face with a pitch to horizontal corresponding to an angular throw equal to the pill cell spacing, and a plunger attached to the base such that the plunger pivots in a vertical plane while remaining torsionally rigid in a horizontal plane, the plunger having a sliding shoe with a downward-facing sliding face complementary to the ramp faces, the sliding shoe located sufficiently distant from the pivot axis for the application of leverage while extending to a position directly above the leading edge of one of the saw teeth such that a downward pivoting force applied to the plunger would bring the sliding face of the sliding shoe into contact with the ramp face of the proximate saw tooth thereby collapsing the inclines into a traversing slide resulting in a rotational thrust of the pill container, the plunger thereafter having means for recycling to the next saw tooth at the completion of the downward pivot stroke.

2. The dispenser of claim 1 wherein the cells of the pill container are evenly spaced about an axis of rotation in the base.

3. The dispenser of claim 1 including a method for single-hand dispensing of pills from said dispenser comprising:

the steps of grasping the plunger, pill container and base assembly between the thumb and fingers of one hand and pressing the plunger downward with the thumb while cupping the hand beneath the pill exit aperture to catch the pill thus expressed.

4. The dispenser of claim 1 wherein the sliding shoe is flexibly attached to the plunger and each saw tooth ramp face has a tilt perpendicular to the pitch which is complemented by a tilt of the sliding face such that the two faces slidably interlock when forced together thereby preventing the sliding shoe from slipping off of the mating saw tooth when the plunger is rotated downward in an arc.

5. The dispenser of claim 4 wherein the means for recycling comprises a bypassing face on the sliding shoe and a complementarily posed overlap face on the next advancing saw tooth such that the faces are vertically interposed at the bottom of the downward pivoting stroke, the inclination of the faces such that the sliding shoe smoothly passes over the advancing tooth to regain the plunger initial position above the tooth when motivated upward by a means for lifting.

6. The dispenser of claim 5 wherein the means for lifting comprises a pair of parallel beam springs attached to the base at a location .between the sliding shoe of the plunger and the pivot axis when the plunger is in assembly with the base and a spreading wedge attached to the plunger in a location such that the wedge is forced between the springs during the downward pivot-stoke creating a potential upward force in the tension of the springs sufficient to return the plunger to the initial position while forcing the sliding shoe to bypass the supraimposed saw tooth.

7. A self actuating, refillable dispenser for a periodic regiment of pills comprising:

a first subassembly comprising;

(a) a base having a first pill exit aperture;

(b) a pill container having pill cells for the containment of pills therein, the pill container movably attached to the base such that any pill cell can be aligned with the pill exit aperture, the pill cells having open bottoms for loading and unloading which are adjacent to the base when assembled thereto;

(c) means for cyclically indexing the pill container with respect to the base such that each pill cell in turn is brought into alignment with the pill exit aperture- thereby dropping resident pills from the dispenser; and

a second subassembly comprising;

an outer container sized for protecting and aligning with the first subassembly and capable of being replenished with a first subassembly charged with a fresh load of pills.

8. The dispenser of claim 7 wherein the pill container is essentially circular.

9. The dispenser of claim 8 wherein the outer container comprises a cupped bottom and a top hinged together on one end and latched at the other, the bottom having a pill release aperture positioned to coincide with the pill exit aperture when the base and loaded pill container subassembly is aligned to the outer container with means for orienting and held in place with means for removably connecting thereby allowing convenient dispensing without removal of the subassembly from the outer container.

10. The dispenser of claim 9 wherein the means for orienting comprises interlocking geometries distributed between the base and bottom such that the geometries of the base match to the complementing geometries of the bottom in only one position of the subassembly relative to the bottom.

11. The dispenser of claim 9 wherein the means for removably connecting is a plug with lateral extensions at both ends which clamp the bottom and base therebetween when one end of the plug is inserted through mating apertures in the bottom and base and thereafter twisted by means for twisting.

12. The dispenser of claim 11 wherein the mean for twisting is a coin slot located in the bottom surface of the plug.

13. A self-actuating, sequence-indicating dispenser for a periodic regimen of pills comprising:

(a) a base having a pill exit aperture;

(b) a pill container having pill cells for the containment of pills therein, the pill container movably attached to the base such that any pill cell can be indexed over the pill exit aperture, the pill cells having open bottoms for loading and unloading which are adjacent to the base when assembled thereto;

(c) means for cyclically indexing the pill container with respect to the base such that each pill cell in turn is brought into alignment with the pill exit aperture thereby dropping resident pills from the dispensers; and

(d) means for indicating the sequence of pills, which can be adjusted to a specific therapy;

wherein the pill container has a circular outer wall and the pill cells are circularly arrayed with even spacing about an axis of rotation in the base, the pill cells numbering the pills, the pill cell initially positioned over the pill exit aperture of the base having means for temporary suspension of the pill contained therein;

wherein the means for temporary suspension comprises a spring finger attached to the base which is inserted into the exposed pill cell through an aperture upon assembly of the base and pill container and which cradles the pill long enough for the cell to transition over the base thereby closing the bottom of the pill cell and trapping the resilient pill, the spring finger deflecting synchronously from the interior space of the pill cell to a space exterior of the pill container for the remainder of the dispensing regimen by the interaction of cam surfaces on the spring finger and pill container.

14. A self-actuating, sequence-indicating dispenser for a periodic regimen of pills comprising:

(a) a base having a pill exit aperture;

(b) a pill container having pill cells for the containment of pills therein, the pill container movably attached to the base such that any pill cell can be indexed over the pill exit aperture, the pill cells having open bottoms for loading and unloading which are adjacent to the base when assembled thereto;

(c) means for cyclically indexing the pill container with respect to the base such that each pill cell in turn is brought into alignment with the pill exit aperture thereby dropping resident pills from the dispensers; and

(d) means for indicating the sequence of pills, which can be adjusted to a specific therapy;

wherein the pill container has a circular outer wall and the pill cells are circularly arrayed with even spacing about an axis of rotation in the base, the pill cells numbering the pills, the pill cell initially positioned over the pill exit aperture of the base having means for temporary suspension of the pill contained therein;

wherein the means for indicating comprises a ring encircling the pill container and having means for moveable attachment thereto, the means for moveable attachment providing for changeable settings of the ring relative to the pill container while maintaining the setting when the pill container is indexed forward, the ring having a top surface imprinted with indicators of periodicity such that the indicators and the pill cells are in one to one correspondence with each setting, and a stationary indicating feature to provide a reference point for the operating indicator of periodicity.

15. The dispenser of claim 14 wherein the indicators of periodicity are days of the week and the number of pills is an even multiple of seven.

16. The dispenser of claim 14 wherein the means for moveable attachment comprises a plurality of bosses flexibly attached to the ring which slidably seat to notches in the outer wall, the spacing of notches and bosses such that a registry is obtained at each pill cell, and a means for retaining the ring in assembly between the pill container and the base.

17. The dispenser of claims 6 or 16 further comprising means for positive one-way positioning of the pill container with respect to the pill exit aperture of the base.

18. The dispenser of claim 17 wherein the means for positive one-way positioning comprises a means for ratcheting interposed between the pill container and base.

19. A self-actuating, sequence-indicating, refillable dispenser for a periodic regimen of pills comprising:

(a) an essentially circular base having a flat platform, an axis-of-rotation perpendicular to the center of the platform, a pill exit aperture at the periphery of the platform, a spring finger attached to the base at the periphery and extending into the space above the pill exit aperture, two vertical cradle struts rigidly mounted to the platform with opposing cradle recesses in the ends, the cradle recesses defining therebetween an axis perpendicular to the axis-of-rotation, and two vertical parallel beam springs attached to the platform between the pill exit aperture and the axis perpendicular to the axis-of-rotation, the parallel beam springs and the cradle struts straddling a common bisecting line passing through the axis of rotation;

(b) a pill container having pill cells arrayed evenly about a circle having a radius equal to the distance between the pill exit aperture and the axis-of-rotation, an inner wall and an outer wall connected by a top surface surrounding the pill cells which are enclosed except for bottom openings, a last pill cell reserved for the last sequential pill of the regimen, a last pill aperture opening into the last pill cell for insertion of the spring finger serving to suspend the last pill when located above the pill exit aperture, means for camming the spring finger out of the way of the pill cell without expressing the last pill when the pill container is advanced, vertical channels in the outer wall corresponding in number and interval to the pill cells, a circular aperture in the center of the pill container sized to circumscribe the parallel beam springs and the cradle struts, a base flange between the circular aperture and the bottom of the inner wall, means for rotatably retaining the pill container when the pill container is assembled to the base centered on the axis-of-rotation with the last pill cell over the pill exit aperture, the base forming a bottom to the pill cells thereby containing the pills until each pill cell is advanced over the pill exit aperture causing the resident pill to drop through, means for ratcheting interposed between the pill container and the base for regulating clockwise-only motion, and a set of Vertical saw teeth corresponding to the pill cells in count and interval, the saw teeth comprising one half of a sliding inclined plane set having a pitch and stroke sufficient to rotate the pill container one index position, the saw teeth and the means for ratcheting oriented to the pill cells such that each index position corresponds to the alignment of a pill cell with the pill exit aperture, each saw tooth having an upward facing ramp face forming an acute angle with the inner wall and a downward facing overlap face forming an oblique angle with the inner wall;

(c) a periodicity indicator ring for encircling the pill Container having a ring top surface imprinted with indicators of periodicity corresponding to the pill cells in ;

number and interval, a ring wall attached to the inner rim of the ring top surface, a plurality of tangential springs attached to the ring wall terminating in rounded ring pawls, the ring pawls biased against the lo outer wall of the pill container when assembled thereto by the tangential springs, the ring pawls evenly spaced such that they simultaneously seat to a set of vertical channels, each such seating providing a unique alignment of the indicators of periodicity with the pill cells which is maintained by interlock of the ring pawls in the vertical channels during transportation of the pill container, the alignment made variable by rotating the periodicity indicator ring about the pill container, the rotation urging the pawls to flex outward into the intervening space between the ring wall and the outer wall, and second means for rotatably retaining the periodicity indicator in assembly between the pill container and the base;

(d) a plunger having a plunger base with a slotted extension, a pivot attached to the plunger base dimensioned to seat within the cradle recesses with provision for freedom to pivot, a spreading wedge attached to the plunger base between the pivot and slotted extension, the slotted extension, spreading wedge and pivot located linearly to coincide with the saw teeth, the parallel beam springs and the cradle recesses, respectively, of the base and pill container subassembly, means for pivotally retaining the plunger to the base, the spreading wedge acting to spread the parallel beam springs apart when a downward pivoting force is applied to the plunger thereby creating the potential for a reciprocating force, a sliding shoe flexibly attached to the end of the slotted extension forming the second half of the sliding inclined plane set, the sliding shoe having an angled extension for insertion between the saw teeth thereby establishing an underlap with an advancing saw tooth at the finish of a pivot stroke, the angled extension initiating the pivot stroke above the leading edge of the operating saw tooth, the angled extension having a downward-facing sliding face with inclinations complementary to that of the ramp face such that the sliding face moving downward against the ramp face causes the contacting faces to interlock while moving opposite to each other thus imparting torque to the pill container and causing a rotational movement of the pill container with respect to the base and plunger, the angled extension further having an upward-facing bypassing face with an inclination to vertical complementary to that of the overlap face such that the composite structure of the sliding shoe and the slotted extension is flexed inward when the bypassing face moves upward against the overlap face by the sliding interaction of the vertical angles driven by the reciprocating force of the parallel beam springs thereby allowing the angled extension to transition over the thickness of the advancing saw tooth to regain position for the next indexing cycle, means for limiting the upward and downward extents of the pivoting stroke thereby providing regulation of indexing movement, means for preventing rotation of the pill container except when the plunger is pivoted, and an indicating feature on the plunger providing a reference point for the operating indicator of periodicity; and

,

(e) a hinged shell having cupped bottom and top elements dimensioned for containing the subassembly of the base, pill container, indicator of periodicity ring and plunger, the subassembly comprising a refill unit when loaded with a regimen of pills, the bottom element having a pill release aperture positioned to coincide with the pill exit aperture thereby providing conduit for the pills, means for orienting the refill unit to the hinged shell for alignment of the pill release aperture and the pill exit aperture, and means for removably connecting the refill unit to the hinged shell.

20. The dispenser of claim 19 wherein the means for orienting comprises a circular fixturing wall attached to the bottom to encircle and laterally contain the refill unit, the fixturing wall having a plurality of vertical fixturing wall slots, and the base having an equal or lessor plurality of orienting tabs extending radially outward to interlock with the fixturing wall slots, the orienting tabs and fixturing wall slots asymmetrically arrayed to match in a unique orientation at which assembly of the refill unit to the hinged shell is permitted.

21. The dispenser of claim 20 wherein the means for removably connecting comprises aligned apertures in the bottom element and in the base to receive a plug connector, the plug connector having a tubular body and a base flange at one end to abut the bottom element, the tubular body having one or more key tabs at the other end extending laterally outward to overlap the platform when the plug connector is twisted therein, the platform supporting underlapping detents to register the key tabs at the raised end of spiraling ramps, the key tabs passing through keyways in the apertures located adjacent to the spiraling ramps to ride up the spiraling ramps upon application of a force twisting in the direction sense of the spiraling ramps, the tubular body having a length sufficient to snugly lock the refill unit and hinged shell together when the key tabs are seated in the detents, and a tool slot in the bottom of the base flange for insertion of a coin, or other tool, therewith to twist the plug connector.

22. The dispenser of claim 21 further comprising means for locking pivotal movement of the plunger when the refill unit is disconnected from the protective hinged shell.

23. The dispenser of claim 22 wherein the means for locking pivotal movement comprises a flexible beam attached to the plunger base in a location giving proximity to one of the detents when the plunger is assembled to the base, the proximate detent having a level surface to receive the abutting face of the flexible beam inclined thereto thereby forming a buttress, the beam experiencing deflection when the refill unit is loaded into the hinged shell and one of the key tabs is twisted into the detent thereby camming aside the flexible beam, the flexible beam thus deflected thereafter free to pivot downward into the space provided by the elevation of the detent above the platform thereby unlocking the plunger.

24. A method of assembling a dispenser for a periodic regimen of pills, the dispenser having a base, a pill container containing a plurality of pill cells arrayed circumferentially thereabout, a periodicity indicator ring, a plunger, a hinged shell and a plug connector as components thereof comprising the steps of:

(a) loading the pills clockwise into the pill cells of the pill container beginning with the first sequential pill of the regimen and thereafter continuing in a clockwise circuit, into the pill container;

(b) placing the periodicity indicator ring around the pill container;

(c) connecting the base to the subassembly of the previous step (b);

(d) connecting the plunger to the subassembly of step (c) after turning it over;

(e) positioning the unit assembled in the previous steps for reception to the hinged shell; and

(f) inserting the plug connector into the assembly of the previous step (e) and twisting the plug connector to lock the assembly together.