Pharmaceutical singulation counting and dispensing system

• US 20080255700A1
• Filed: 04/12/2007
• Published: 10/16/2008
• Est. Priority Date: 04/12/2007
• Status: Active Grant

• Current Assignee: J M Smith Corporation
• Original Assignee: J M Smith Corporation
• Inventors: Foster, Darol Blake, Davis, Michael Wayne, Mitchell, Barton Carter, Greene, Jerriel Keith
• Granted Patent: US 7,571,023 B2
• Time in Patent Office: Days
• US Class Current: 700/240
• CPC Class Codes: A61J 7/02 Pill counting devices

Abstract

An apparatus for counting pharmaceutical units is provided having a supporting deck assembly, a hopper, a cylindrical chamber and a transport ring positioned between the hopper and the cylindrical chamber, wherein the hopper has a tilted floor, which can be shaken or vibrated to discharge the units on to a transport ring, and the transport ring is sloped downward from its inner to outer perimeter, which brings the units into contact with the undulating surface of the walls of the cylindrical chamber to promote singulation prior to counting.

Claims

1. An apparatus for counting pharmaceutical units, comprising:

(a) a deck assembly;

(b) a cylindrical chamber carried by the deck assembly;

(c) a hopper, carried by the deck assembly and positioned within the cylindrical chamber, the hopper having (i) side walls, (ii) a floor, positioned within the side walls and tilted relative to horizontal, whereby the floor is free to move relative to the side walls, and (iii) an opening adjacent a lower side of the floor, from which to discharge the pharmaceutical units;

(d) a means to pivot the floor of the hopper around a central axis;

(e) a means to support the floor of the hopper in a tilted orientation, while allowing the hopper to pivot around the central axis;

(f) a means to vibrate the floor of the hopper, whereby the floor of the hopper rides unevenly against a surface as the floor is pivoted;

(g) a rotatable, transport ring carried by the deck assembly, the transport ring having an inner perimeter, an outer perimeter and a top surface, wherein the outer perimeter of the transport ring is positioned within the walls of the cylindrical chamber, and wherein the opening in the hopper is oriented to discharge the pharmaceuticals units onto the top surface of the transport ring;

(h) a motor for rotating the transport ring;

(i) an outlet in the cylindrical chamber for discharging the pharmaceutical units from the transport ring;

(j) a receptacle for receiving the pharmaceutical units discharged through the outlet;

(k) a counting system, for counting the pharmaceutical units discharged to the receptacle; and

(l) a controller for receiving prescription data, initiating a count cycle, controlling the transport ring motor, receiving a pharmaceutical unit count from the counting system and ending a count cycle.

2. The apparatus of claim 1 wherein the means to vibrate the floor of the hopper comprises a wheel positioned to ride across a ridged surface.

3. The apparatus of claim 2 wherein the wheel is attached to the bottom of the hopper and the ridged surface is affixed to the deck assembly.

4. The apparatus of claim 1 wherein the transport ring is slanted downward from its inner perimeter to an outer perimeter, and the outer perimeter of the transport ring and the walls of the cylindrical chamber are positioned to cause the pharmaceutical units to contact the walls of the cylindrical chamber as the pharmaceutical units are being transported.

5. The apparatus of claim 4 wherein the cylindrical chamber has an undulated surface, relative to the transport ring.

6. The apparatus of claim 4 wherein the transport ring is slanted downward at an angle of from 15 to 55°

relative to the horizontal.

7. The apparatus of claim 6, wherein the undulated surface of the cylindrical chamber is characterized by a frequency from ⅛

inch to 1½

inches and amplitudes of from 5 mils to 200 mils.

8. The apparatus of claim 4 wherein the transport ring is slanted downward at an angle of from 25 to 45°

relative to the horizontal.

9. The apparatus of claim 8, wherein the undulated surface of the cylindrical chamber is characterized by crests of from ¼

inch to ¾

inch and amplitudes of from 20 mils to 100 mils.

10. The apparatus of claim 1 wherein the floor of the hopper is tilted at an angle of from 8 to 20°

relative to the horizontal.

11. The apparatus of claim 10, wherein the hopper further comprises a means to dislodge stacked pharmaceutical units exiting the opening, the dislodging means comprising a row of flexible fingers aligned across the opening, and wherein the height of the fingers above the floor of the hopper is adjustable to accommodate pharmaceutical units of varying size and shape.

12. The apparatus of claim 11, wherein the dislodging means further comprises an array of flexible fingers aligned across the opening of the hopper and extending backwards from the opening to a thickness of at least ½

inch, and wherein the bottom of the array forms an angle which is greater than the angle of tilt of the floor of the hopper, such that the fingers closer to the opening extend downward a greater distance than the fingers farther from the opening.

13. The apparatus of claim 12, wherein the bottom of the array of fingers are at an angle of 25 to 40°

relative to the horizontal.