US20110305545A1 - System and Method for High-Volume Filling of Pharmaceutical Prescriptions - Google Patents
System and Method for High-Volume Filling of Pharmaceutical Prescriptions Download PDFInfo
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- US20110305545A1 US20110305545A1 US13/016,062 US201113016062A US2011305545A1 US 20110305545 A1 US20110305545 A1 US 20110305545A1 US 201113016062 A US201113016062 A US 201113016062A US 2011305545 A1 US2011305545 A1 US 2011305545A1
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- Prior art keywords
- vial
- carrier
- dispensing
- puck
- gripper assembly
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Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F11/00—Coin-freed apparatus for dispensing, or the like, discrete articles
- G07F11/02—Coin-freed apparatus for dispensing, or the like, discrete articles from non-movable magazines
- G07F11/04—Coin-freed apparatus for dispensing, or the like, discrete articles from non-movable magazines in which magazines the articles are stored one vertically above the other
- G07F11/16—Delivery means
- G07F11/165—Delivery means using xyz-picker or multi-dimensional article picking arrangements
- G07F11/1657—Delivery means using xyz-picker or multi-dimensional article picking arrangements the picking arrangements using suction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J9/00—Programme-controlled manipulators
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/05—Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
- A61J1/06—Ampoules or carpules
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
- A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
- A61J1/14—Details; Accessories therefor
- A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J11/00—Manipulators not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B3/003—Filling medical containers such as ampoules, vials, syringes or the like
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F11/00—Coin-freed apparatus for dispensing, or the like, discrete articles
- G07F11/02—Coin-freed apparatus for dispensing, or the like, discrete articles from non-movable magazines
- G07F11/04—Coin-freed apparatus for dispensing, or the like, discrete articles from non-movable magazines in which magazines the articles are stored one vertically above the other
- G07F11/16—Delivery means
- G07F11/165—Delivery means using xyz-picker or multi-dimensional article picking arrangements
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
- G07F17/0092—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for assembling and dispensing of pharmaceutical articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B5/00—Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
- B65B5/10—Filling containers or receptacles progressively or in stages by introducing successive articles, or layers of articles
- B65B5/101—Filling containers or receptacles progressively or in stages by introducing successive articles, or layers of articles by gravity
- B65B5/103—Filling containers or receptacles progressively or in stages by introducing successive articles, or layers of articles by gravity for packaging pills or tablets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67C—CLEANING, FILLING WITH LIQUIDS OR SEMILIQUIDS, OR EMPTYING, OF BOTTLES, JARS, CANS, CASKS, BARRELS, OR SIMILAR CONTAINERS, NOT OTHERWISE PROVIDED FOR; FUNNELS
- B67C3/00—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus; Filling casks or barrels with liquids or semiliquids
- B67C3/02—Bottling liquids or semiliquids; Filling jars or cans with liquids or semiliquids using bottling or like apparatus
- B67C3/22—Details
- B67C3/24—Devices for supporting or handling bottles
- B67C3/242—Devices for supporting or handling bottles engaging with bottle necks
Definitions
- This invention relates generally to materials handling, and more particularly to pharmaceutical prescription handling.
- prescription drugs are dispensed in a high volume.
- an automatic pill dispensing system to carry out the dispensing of the prescription drugs automatically at a rapid rate.
- vial carriers may be used to convey vials to and from the automated dispensing apparatus.
- the vial carriers are typically employed to prevent a vial from toppling over as it is conveyed at high speeds.
- vials of the same size are filled consecutively (in many cases with the same drug), so carriers of similar size are also used.
- the vials may be labeled prior to or after filling and/or capping.
- a known automatic pill dispensing system is described in U.S. Pat. No. 6,971,541 to Williams et al.
- This system has the capacity to select an appropriate vial, label the vial, fill the vial with a desired quantity of a selected pharmaceutical tablet, apply a cap to the filled vial, and convey the labeled, filled, capped vial to an offloading station for retrieval.
- the system has a large number of different bins, or cells, each of which is filled with a specific drug.
- Two robotic arms transfer each vial between stations for accomplishing many of the various above-mentioned tasks.
- Counting and dispensing from the cells is carried out with air and suction applied to the cell to agitate pills and direct them to a dispensing outlet, where they are counted as they are dispensed.
- An updated version of this system is illustrated and described in, for example, U.S. Patent Publication No. 2009-0178464, the disclosure of which is hereby incorporated herein in its entirety.
- only one robotic arm is incorporated, and the vial selection and labeling tasks are performed before the robotic arm picks up the vial.
- the air/suction-based dispensing technique can provide accurate counting and dispensing at high speeds.
- embodiments of the present invention are directed to a method of retrieving a vial from a carrier.
- the method comprises the steps of: contacting a vial contained within a carrier with a gripper assembly to shift the position of the container to one end of the carrier and to adjust the position of the carrier on a platform from a diverted position to a retrieval position; lifting the vial from the carrier with the gripper assembly; and returning the vial to the carrier with the gripper assembly.
- embodiments of the present invention are directed to an automated pharmacy machine, comprising: a frame defining a peripheral footprint; a plurality of bins, each of the bins containing a bulk supply of a pharmaceutical; a transition platform mounted to the frame and having at least one retrieval position configured to receive a vial for filling, the retrieval position being located within the footprint of the frame; and a gripper assembly mounted within the frame and configured to grasp and convey a vial from the transition platform to one of the bins for dispensing.
- FIG. 1 is a perspective view of an automated pharmaceutical dispensing system according to embodiments of the present invention.
- FIG. 2 is an enlarged perspective view of the delivery platform and gripping assembly of the system of FIG. 1 .
- FIG. 2A is an exploded perspective view of the transition platform assembly of FIG. 2 .
- FIG. 3 is a perspective view of a puck for carrying pharmaceutical vials and bottles on the conveyor of the system of FIG. 1 .
- FIG. 4 is a perspective view of a diverter unit diverting a puck and vial into a recess of the delivery platform, the delivered puck being shown in broken line.
- FIG. 5 is a perspective view of the gripping assembly of FIG. 4 as it grasps the vial from the puck delivered to the delivery platform in FIG. 4 .
- FIGS. 6A and 6B are top views of the puck and vial prior to and after adjustment with the gripping assembly from the diverted position to the retrieval position.
- FIG. 7 is a perspective view of the gripping assembly grasping the vial.
- FIG. 8 is a perspective view of the gripping assembly returning a filled vial to the puck.
- FIG. 9 is a perspective view of the returner assembly returning the puck and filled vial to the conveyor.
- FIG. 10 is a flow chart describing operations according to embodiments of the present invention.
- FIG. 11 is a flow chart describing operations according to embodiments of the present invention.
- spatially relative terms such as “under”, “below”, “lower”, “over”, “upper” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “under” or “beneath” other elements or features would then be oriented “over” the other elements or features. Thus, the exemplary term “under” can encompass both an orientation of over and under. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
- forward and derivatives thereof refer to the general direction vial carriers and vials travel as they move from station to station; this term is intended to be synonymous with the term “downstream”, which is often used in manufacturing environments to indicate that certain material being acted upon is farther along in the manufacturing process than other material.
- downstream which is often used in manufacturing environments to indicate that certain material being acted upon is farther along in the manufacturing process than other material.
- reverse and upstream and derivatives thereof refer to the directions opposite, respectively, the forward and downstream directions.
- the invention relates generally to a system and process for dispensing pharmaceuticals.
- An exemplary system is illustrated in FIG. 1 and designated broadly at 20 .
- the system 20 includes a conveyor unit 70 , a transition platform assembly 80 , and an automated dispensing machine 40 . These components are described in greater detail below.
- the conveyor unit 70 includes a line conveyor 71 that is positioned to convey a series of pucks 72 .
- Each puck 72 is sized and configured to receive a pharmaceutical vial or bottle in a central cavity 74 .
- the term “vial” is intended to mean an open-ended container typically used for pharmaceuticals, and is intended to encompass vials, bottles, jars, and the like.
- the cavity 74 of the puck 72 is typically slightly larger than the vial, which facilitates insertion of the vial in the puck 72 , and is typically round. In the illustrated embodiment, pucks 72 are employed to reduce the risk of the vial or bottle tipping during conveying.
- the pucks 72 include an RFID tag (located in a recess in the underside of the puck 72 ) which indicates a prescription number for the prescription to be filled by the dispensing machine 40 or another indicator of the drug and number of tablets to be dispensed, which can be used to indicate to the system 40 which pharmaceutical is to be dispensed into the vial.
- an RFID tag is an object applied to or incorporated into a component for the purpose of identification and tracking using radio waves. Some RFID tags can be read from several meters away and beyond the line of sight of the reader. Many RFID tags contain at least two parts. One is an integrated circuit for storing and processing information, modulating and demodulating a radio-frequency (RF) signal, and other specialized functions.
- RF radio-frequency
- the second is an antenna for receiving and transmitting the signal.
- RFID tags There are generally three types of RFID tags: active RFID tags, which contain a battery and can transmit signals autonomously, passive RFID tags, which have no battery and require an external source to provoke signal transmission, and battery assisted passive (BAP) which require an external source to wake up but have significant higher forward link capability providing great read range. Any of these may be used in connection with the present invention. Exemplary RFID tags and readers are disclosed in U.S. Pat. No. 6,317,648 to Sleep et al., the disclosure of which is hereby incorporated herein in its entirety.
- operation of the system 20 commences with pucks containing empty vials being conveyed along a path P from one end of the conveyor unit 70 to a position adjacent the transition platform assembly 80 ( FIG. 4 ). They are diverted to the transition platform assembly 80 ( FIG. 4 ), where a robotic arm 102 of a gripper assembly 100 removes the vial from the puck 72 ( FIG. 7 ) and conveys the vial to be filled with a pharmaceutical from the dispensing machine 40 to the appropriate dispensing location. The arm 102 returns the filled vial to its respective puck 72 ( FIG. 8 ), and the puck 72 and vial are returned to the conveyor 70 and conveyed away from the transition platform assembly 80 ( FIG. 9 ) for further processing (such as capping).
- the conveyor 70 may take any number of forms, including belt conveyors, rollers, slide conveyors, and combinations thereof. In some embodiments, the conveyor 70 may even take the form of a robotic arm that positions the pucks 72 on the diverter platform 80 . Also, in some embodiments, the conveyor unit 70 may be endless (e.g., it may follow an oval path), such that pucks 72 are emptied of their filled vials and automatically returned to a starting point to receive another empty vial for another dispensing operation.
- the transition platform assembly 80 is mounted beside the conveyor 70 , such that its upper surface is substantially coplanar with the conveyor 70 .
- the transition platform assembly 80 includes an aligner member 81 that defines two U- or V-shaped recesses 82 divided by a divider 83 .
- the aligner member 81 is mounted atop a base panel cover 76 , which covers a base panel 75 .
- An RFID tag reader 77 is mounted on the underside of the base panel cover 76 below each recess 82 and fits within apertures in the base panel 75 .
- the transition platform assembly 80 is located such that the recesses 82 are within the frame 44 of the automated dispensing machine 40 , i.e., within the “footprint” of the machine 40 .
- Two substantially identical diverting units 84 a , 84 b are mounted over the conveyor 71 , with diverting unit 84 a being positioned slightly upstream of the diverting unit 84 b .
- Two substantially identical return units 88 a , 88 b are also mounted over the conveyor 71 , with the return unit 88 a being positioned in alignment with the diverting unit 84 a and the return unit 88 b being positioned in alignment with the diverting unit 84 b .
- Each diverter unit 84 a , 84 b includes a horizontally-disposed guide 85 that extends over the conveyor 70 , diverter rods 86 that extend from and retract into the guide 85 , and a vertically-disposed paddle 87 that is suspended from the rods 86 , and a pneumatic actuator (not shown) that acts to retract and extend the rods 86 .
- the paddle 87 is positioned across the conveyor 71 from the transition platform assembly 80 .
- Each paddle 87 is positioned to be generally aligned with a respective recess 82 of the aligner panel 81 .
- Each of the return units 88 a , 88 b includes a guide 89 , rods 90 , and a pneumatic actuator (not shown) similar to the guides 85 , rods 86 and actuator discussed above.
- An L-shaped, vertically-disposed sweep arm 91 is mounted on the end of each set of rods 90 (with the sweep arm 91 of the return unit 88 a being a mirror image of the sweep arm 91 of the return unit 88 b ).
- the sweep arm 91 of each return unit 88 a , 88 b is positioned such that one of the recesses 82 is between the sweep arm 91 and the conveyor 70 .
- each of the sweep arms 91 is offset from the paddle 87 of its corresponding diverter unit 84 a , 84 b and positioned such that its lower segment 91 a can pass beneath the paddle 87 and its vertical segment 91 b can pass beside the paddle 87 . Also, the shape of the sweep arms 91 enables them to avoid interference with the gripper assembly 100 as it approaches the transition platform assembly 80 .
- the automated dispensing machine 40 is similar to that described in U.S. Patent Publication No. 2009-0178464, supra, with the vial dispensing, labeling, capping and offloading stations removed.
- the gripper assembly 100 which includes the robotic arm 102 and gripper fingers 104 mounted thereon, is mounted on a carriage 106 that can translate vertically on a rail 108 and can revolve around the carriage 106 .
- the rail 108 is mounted for translation on a pair of horizontal rails (not shown) that enable the arm 102 to be transported to different positions within the automated dispensing machine 40 .
- the automated dispensing machine 40 includes a large number of dispensing bins, or cells, 42 , each of which contains a bulk supply of a pharmaceutical (typically pills or tablets). Typically, different pharmaceuticals are contained in different bins 42 . Each of the bins 42 is configured to dispense a given pharmaceutical into a vial held by the gripper fingers 104 . Dispensing is achieved by directing air flow within a bin 42 that forces individual tablets into and out of a dispensing outlet into a waiting vial. The tablets are singulated and counted during dispensing. Further discussion of the details of the dispensing and counting operations can be found in, e.g., U.S. Pat. No. 6,971,541 to Williams and U.S. patent application Ser. Nos.
- a controller 200 is connected with the conveyor unit 70 , the transition platform assembly 80 and the automated dispensing machine 40 for controlling operations.
- the controller 200 will be operatively connected with an external device, such as a personal or mainframe computer, that provides input information regarding prescriptions.
- the controller 200 may be a stand-alone computer that directly receives manual input from a pharmacist or other operator.
- An exemplary controller is a conventional microprocessor-based personal computer.
- the controller 200 may also be divided into multiple computers, networks, processors, etc., that combine and/or share operations. For example, one portion of the controller 200 may be internal to the automated dispensing machine 40 and control the dispensing operations of the system 20 , and another portion of the controller 200 may be external to automated dispensing machine 40 and control the conveying operations of the system 20 .
- the system 20 also includes a series of sensors connected with the controller 200 for detecting the presence of objects within the system 20 .
- Sensors 120 , 122 are positioned on the transition platform assembly 80 to detect the presence of a puck 72 in a respective recess 82 .
- Sensors 124 , 126 are positioned on the transition platform assembly 80 to detect the presence of a vial within a puck 72 as the puck 72 resides in a respective recess 82 .
- a sensor 128 is positioned on the frame of the automated dispensing machine 40 to detect the presence of the gripping assembly 100 above the base plate cover 76 .
- Sensors 132 , 134 are mounted near the conveyor 71 to detect the presence of a puck in position to be diverted by one of the diverting units 84 a , 84 b.
- Operation of the system 20 commences with a puck 72 on the conveyor 71 upstream of the transition platform assembly 80 receiving a vial V of the proper size for a particular prescription.
- the vial V may be selected based on the reading of the RFID tag on the puck 72 , or may be part of a lengthy “run” of prescriptions using the same size vial.
- the vial V may or may not be labeled at this point in the operations.
- the vial V may be manually inserted into the puck 72 or may be inserted automatically (e.g., with a robotic arm or a pick-and-place device).
- a “hold-back” device such as a retractable stop, holds multiple pucks/vials in place on the conveyor 71 upstream of the transition platform assembly 80 and releases them downstream one at a time.
- a “hold-back” device such as a retractable stop, holds multiple pucks/vials in place on the conveyor 71 upstream of the transition platform assembly 80 and releases them downstream one at a time.
- one of the sensors 120 , 122 detects that its associated recess 82 is void of a puck 72 , it signals the hold-back device to release the next puck 72 and vial V toward the transition platform assembly 80 .
- the controller 200 selects the appropriate diverter unit 84 a , 84 b to divert the puck 72 from the conveyor 71 and signals the selected diverter unit to divert the puck 72 and vial V. Actuation of the diverter unit 84 a , 84 b is initiated by one of the sensors 132 , 134 , which detects the presence of the puck 72 in front of the respective paddle 87 of a diverter unit 84 a , 84 b .
- the controller 200 actuates the diverter unit 84 a , 84 b to be used to divert the puck 72 .
- the controller 200 selects the diverter unit 84 b (which is farther downstream) as a default unless it already houses a puck 72 .
- the rods 86 thereof extend from the guide 85 , thereby forcing the paddle 87 toward the aligner plate 81 along a diversion path P (Block 310 of FIG. 10 ).
- the paddle 87 contacts the puck 72 and slides the puck 72 and the vial V from its location on the conveyor 70 into the corresponding recess 82 .
- the V-shape of the edge of the recess 82 assists in positioning the puck 72 and vial V for the gripper assembly 100 .
- the position of the puck 72 in the recess 82 is within the footprint of the frame 44 of the machine 40 .
- the puck 72 may be particularly advantageous for the puck 72 to be positioned within the footprint of the machine 40 .
- the automated dispensing machine 40 may be oriented in any orientation that is considered to be desirable or advantageous.
- the ability to align the automated dispensing machine 40 to be generally perpendicular to the direction of conveyor travel may be advantageous, as it may enable the density of automated dispensing machines 40 servicing the same conveyor to be increased and/or maximized.
- the sensors 120 , 122 and 124 , 126 detect their presence, and the RFID sensor 77 reads the RFID tag on the puck 72 . Sensing of the RFID tag initiates a fill request for the automated pharmacy machine 40 via the controller 200 .
- the RFID tag may correspond to a particular prescription stored in the database of the controller 200 , or may include the prescription information itself. Detection of the RFID tag indicates to the controller 200 the identity and number of pharmaceutical tablets that are to be dispensed into the vial V.
- the controller 200 signals the gripper assembly 100 to approach the transition platform assembly 80 .
- the gripper assembly 100 moves to the puck 72 and vial V and grasps the vial with the fingers 104 ( FIG. 5 ).
- the gripper assembly 100 then forces the vial V downwardly and pushes the vial V slightly toward the conveyor 70 ( FIGS. 6A and 6B ).
- This action forces the vial V against the circumferential edge of the cavity 74 of the puck 72 that is nearest to the conveyor 70 , which tends to center the vial V within the cavity 74 of the puck 72 relative to the side edges of the recess 82 ( FIG. 6B ), and ensures that the gripper fingers 104 grasp the vial V at a consistent height.
- the puck 72 may also move slightly away from the aligner plate 81 (Block 400 of FIG. 11 ). Thus, this movement drives the puck 72 from its diverted position ( FIG. 6A ) to an X-Y retrieval position ( FIG. 6B ) to which the vial V can be returned after filling.
- the controller 200 Based on the position of the gripping assembly 100 and the known position of the recess 82 , determined through pre-calibration of the system 20 , the controller 200 records the retrieval position to which the puck 72 and vial V are pushed, and utilizes that retrieval position as a coordinate once the filled vial V is returned to the puck 72 .
- the controller 200 signals the gripping assembly 100 to lift the vial V straight up from the cavity 74 of the puck 72 (so as not to disturb the adjusted position of the puck 72 )(see FIG. 9 , Block 320 of FIG. 10 and Block 410 of FIG. 11 ).
- the gripper assembly 100 transports the vial V to the appropriate cell 42 for dispensing of a pharmaceutical from a bin therein into the vial (Block 330 of FIG. 10 ).
- exemplary details of the dispensing are described in, for example, U.S. Pat. No. 6,971,541, supra, and need not be described herein.
- the controller 200 signals the gripping assembly 100 to return the filled vial V to a position above the puck 72 (Block 340 of FIG. 10 and Block 420 of FIG. 11 ).
- the gripping assembly 100 then lowers the filled vial V into the cavity 74 of the puck 72 ( FIG. 8 ).
- the controller 200 knows the position of the cavity 74 due to the adjustment maneuver performed prior to removal of the vial V from the puck 72 , and attempts to place the vial V in the center of the cavity 74 .
- the adjustment maneuver can reduce errors (and spills) for this returning step.
- the gripping assembly 100 then retreats from the diverting platform 80 .
- the controller 200 activates the return unit 88 a , 88 b corresponding to the diverter unit 84 a , 84 b used earlier to divert the puck 72 and vial V (illustrated as return unit 88 a in FIG. 9 ). Actuation of the return unit 88 a , 88 b is delayed until the detection of the vial V in the puck 72 by one or more of the sensors 120 , 122 , 124 , 126 located adjacent to the recess 82 . Alternatively, or additionally, the controller 200 may detect the return of the vial V to the puck 72 based on the releasing motion of the gripping assembly 100 . or by the absence of the gripping assembly 100 above the base plate cover 76 as detected by the sensor 128 .
- Actuation of the return unit 88 a , 88 b causes the rods 90 to retract within the guide 89 , thereby drawing the sweep arm 91 toward the conveyor 70 (Block 350 of FIG. 10 ).
- the sweep arm 91 contacts the puck 72 and pushes the puck 72 and filled vial V onto the conveyor 70 to essentially the same location on the conveyor 70 from which it was originally diverted. From there, the filled vial V and puck 72 are conveyed downstream for further processing (e.g., capping, packaging, etc.).
- the absence of a puck 72 in the recess 82 is detected by one of the sensors 120 , which induces the controller 200 to initiate the release of another puck 72 from the hold-back device on the conveyor 71 .
- diverter unit 84 b and the return unit 88 b operate in the same manner as the diverter unit 84 a and the return unit 88 a to divert carriers and vials to the recess 82 and return them to the conveyor 70 , but do so along a non-coincident, substantially parallel path P 2 .
- the system 20 may be embodied in other forms.
- the diverter units 84 a , 84 b may include any variety of diverting member as a substitute for the paddles 87 , and/or may include other means for extending and retracting the diverting members.
- the return units 88 a , 88 b may include alternative return members to replace the sweep arms 91 , and/or may include other means for extending and retracting the return members.
- the pucks 72 represent one embodiment of vial carrier that is suitable for use with this invention, other vial carriers of different shapes and sizes may also be employed.
- the pucks 72 may lack an RFID tag, such that the sequence of prescription dispensing is retained in the controller itself, or the pucks 72 may include a different type of identifying indicia, such as a bar code.
- system 20 may be constructed by retrofitting an existing automated pharmacy machine 40 .
- an automated pharmacy machine such as that described in U.S. Patent Publication No. 2009-0178464, supra, may in some embodiments be modified by removing the vial dispensing, labeling, and capping stations. These system components may be replaced with additional dispensing cells, and/or a number of cells may be omitted to allow mounting of the transition platform assembly 80 .
- the system 20 may be employed in a stand-alone fashion, with all pucks 72 and vials V being filled by the system 20 , or the system 20 may be part of a larger high-volume filling operation. In such an operation, pucks and vials to be filled by the system 20 may be diverted onto or toward the conveyor unit 70 from a main line conveyor or the like that also conveys other pucks and vials to other dispensing apparatus. In other embodiments, the conveyor unit may be routed through the automated pharmacy machine 40 .
- the adjustment maneuver performed with the gripper 102 may be performed in other ways.
- the gripper 102 may simply contact the vial or puck while adjusting its position rather than actually grasping the vial, with that the controller 200 recording the position accordingly.
- the action of forcing the vial downwardly may be omitted in some embodiments.
- the automated pharmacy machine 40 may include a vial dispensing station and a vial labeling station that select a particular vial and label it prior to pharmaceutical tablets being dispensed into the vial.
- the puck or other carrier can be conveyed without a vial to the transition platform assembly 80 , where it can receive a filled, labeled vial.
- the filled, labeled vial and puck can then be returned to the conveyor 71 with one of the return units 88 a , 88 b for subsequent processing.
Abstract
Description
- This application claims priority from U.S. Provisional Patent Application No. 61/353,510, filed Jun. 10, 2010, the disclosure of which is hereby incorporated herein in its entirety.
- This invention relates generally to materials handling, and more particularly to pharmaceutical prescription handling.
- In mail order, central fill and large retail pharmacies, prescription drugs are dispensed in a high volume. For such services, it is known to use an automatic pill dispensing system to carry out the dispensing of the prescription drugs automatically at a rapid rate.
- In some high volume systems, separate conveyors and vial carriers may be used to convey vials to and from the automated dispensing apparatus. The vial carriers are typically employed to prevent a vial from toppling over as it is conveyed at high speeds. In many high volume dispensing operations, vials of the same size are filled consecutively (in many cases with the same drug), so carriers of similar size are also used. The vials may be labeled prior to or after filling and/or capping.
- A known automatic pill dispensing system is described in U.S. Pat. No. 6,971,541 to Williams et al. This system has the capacity to select an appropriate vial, label the vial, fill the vial with a desired quantity of a selected pharmaceutical tablet, apply a cap to the filled vial, and convey the labeled, filled, capped vial to an offloading station for retrieval. The system has a large number of different bins, or cells, each of which is filled with a specific drug. Two robotic arms transfer each vial between stations for accomplishing many of the various above-mentioned tasks. Counting and dispensing from the cells is carried out with air and suction applied to the cell to agitate pills and direct them to a dispensing outlet, where they are counted as they are dispensed. An updated version of this system is illustrated and described in, for example, U.S. Patent Publication No. 2009-0178464, the disclosure of which is hereby incorporated herein in its entirety. In this later version of the system, only one robotic arm is incorporated, and the vial selection and labeling tasks are performed before the robotic arm picks up the vial. In each instance, the air/suction-based dispensing technique can provide accurate counting and dispensing at high speeds.
- It may be desirable to provide a high volume dispensing system that capitalizes on advantages inherent in the Williams et al. type automated dispensing machine.
- As a first aspect, embodiments of the present invention are directed to a method of retrieving a vial from a carrier. The method comprises the steps of: contacting a vial contained within a carrier with a gripper assembly to shift the position of the container to one end of the carrier and to adjust the position of the carrier on a platform from a diverted position to a retrieval position; lifting the vial from the carrier with the gripper assembly; and returning the vial to the carrier with the gripper assembly. Such a method can improve the accuracy and precision of moving the vial to and from the carrier for dispensing.
- As a second aspect, embodiments of the present invention are directed to an automated pharmacy machine, comprising: a frame defining a peripheral footprint; a plurality of bins, each of the bins containing a bulk supply of a pharmaceutical; a transition platform mounted to the frame and having at least one retrieval position configured to receive a vial for filling, the retrieval position being located within the footprint of the frame; and a gripper assembly mounted within the frame and configured to grasp and convey a vial from the transition platform to one of the bins for dispensing.
-
FIG. 1 is a perspective view of an automated pharmaceutical dispensing system according to embodiments of the present invention. -
FIG. 2 is an enlarged perspective view of the delivery platform and gripping assembly of the system ofFIG. 1 . -
FIG. 2A is an exploded perspective view of the transition platform assembly ofFIG. 2 . -
FIG. 3 is a perspective view of a puck for carrying pharmaceutical vials and bottles on the conveyor of the system ofFIG. 1 . -
FIG. 4 is a perspective view of a diverter unit diverting a puck and vial into a recess of the delivery platform, the delivered puck being shown in broken line. -
FIG. 5 is a perspective view of the gripping assembly ofFIG. 4 as it grasps the vial from the puck delivered to the delivery platform inFIG. 4 . -
FIGS. 6A and 6B are top views of the puck and vial prior to and after adjustment with the gripping assembly from the diverted position to the retrieval position. -
FIG. 7 is a perspective view of the gripping assembly grasping the vial. -
FIG. 8 is a perspective view of the gripping assembly returning a filled vial to the puck. -
FIG. 9 is a perspective view of the returner assembly returning the puck and filled vial to the conveyor. -
FIG. 10 is a flow chart describing operations according to embodiments of the present invention. -
FIG. 11 is a flow chart describing operations according to embodiments of the present invention. - The present invention will now be described more fully hereinafter, in which preferred embodiments of the invention are shown. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, like numbers refer to like elements throughout. Thicknesses and dimensions of some components may be exaggerated for clarity.
- Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
- The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein the expression “and/or” includes any and all combinations of one or more of the associated listed items.
- In addition, spatially relative terms, such as “under”, “below”, “lower”, “over”, “upper” and the like, may be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as “under” or “beneath” other elements or features would then be oriented “over” the other elements or features. Thus, the exemplary term “under” can encompass both an orientation of over and under. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
- As used herein, the term “forward” and derivatives thereof refer to the general direction vial carriers and vials travel as they move from station to station; this term is intended to be synonymous with the term “downstream”, which is often used in manufacturing environments to indicate that certain material being acted upon is farther along in the manufacturing process than other material. Conversely, the terms “rearward” and “upstream” and derivatives thereof refer to the directions opposite, respectively, the forward and downstream directions.
- Well-known functions or constructions may not be described in detail for brevity and/or clarity.
- As described above, the invention relates generally to a system and process for dispensing pharmaceuticals. An exemplary system is illustrated in
FIG. 1 and designated broadly at 20. Thesystem 20 includes aconveyor unit 70, atransition platform assembly 80, and anautomated dispensing machine 40. These components are described in greater detail below. - The
conveyor unit 70 includes aline conveyor 71 that is positioned to convey a series ofpucks 72. Eachpuck 72 is sized and configured to receive a pharmaceutical vial or bottle in acentral cavity 74. As used herein, the term “vial” is intended to mean an open-ended container typically used for pharmaceuticals, and is intended to encompass vials, bottles, jars, and the like. Thecavity 74 of thepuck 72 is typically slightly larger than the vial, which facilitates insertion of the vial in thepuck 72, and is typically round. In the illustrated embodiment,pucks 72 are employed to reduce the risk of the vial or bottle tipping during conveying. - Also, in this embodiment, the
pucks 72 include an RFID tag (located in a recess in the underside of the puck 72) which indicates a prescription number for the prescription to be filled by the dispensingmachine 40 or another indicator of the drug and number of tablets to be dispensed, which can be used to indicate to thesystem 40 which pharmaceutical is to be dispensed into the vial. As used herein, an “RFID tag” is an object applied to or incorporated into a component for the purpose of identification and tracking using radio waves. Some RFID tags can be read from several meters away and beyond the line of sight of the reader. Many RFID tags contain at least two parts. One is an integrated circuit for storing and processing information, modulating and demodulating a radio-frequency (RF) signal, and other specialized functions. The second is an antenna for receiving and transmitting the signal. There are generally three types of RFID tags: active RFID tags, which contain a battery and can transmit signals autonomously, passive RFID tags, which have no battery and require an external source to provoke signal transmission, and battery assisted passive (BAP) which require an external source to wake up but have significant higher forward link capability providing great read range. Any of these may be used in connection with the present invention. Exemplary RFID tags and readers are disclosed in U.S. Pat. No. 6,317,648 to Sleep et al., the disclosure of which is hereby incorporated herein in its entirety. - Generally, operation of the
system 20 commences with pucks containing empty vials being conveyed along a path P from one end of theconveyor unit 70 to a position adjacent the transition platform assembly 80 (FIG. 4 ). They are diverted to the transition platform assembly 80 (FIG. 4 ), where arobotic arm 102 of agripper assembly 100 removes the vial from the puck 72 (FIG. 7 ) and conveys the vial to be filled with a pharmaceutical from the dispensingmachine 40 to the appropriate dispensing location. Thearm 102 returns the filled vial to its respective puck 72 (FIG. 8 ), and thepuck 72 and vial are returned to theconveyor 70 and conveyed away from the transition platform assembly 80 (FIG. 9 ) for further processing (such as capping). - Those skilled in this art will appreciate that the
conveyor 70 may take any number of forms, including belt conveyors, rollers, slide conveyors, and combinations thereof. In some embodiments, theconveyor 70 may even take the form of a robotic arm that positions thepucks 72 on thediverter platform 80. Also, in some embodiments, theconveyor unit 70 may be endless (e.g., it may follow an oval path), such thatpucks 72 are emptied of their filled vials and automatically returned to a starting point to receive another empty vial for another dispensing operation. - Referring now to
FIGS. 2 and 2A , thetransition platform assembly 80 is mounted beside theconveyor 70, such that its upper surface is substantially coplanar with theconveyor 70. Thetransition platform assembly 80 includes analigner member 81 that defines two U- or V-shapedrecesses 82 divided by adivider 83. Thealigner member 81 is mounted atop abase panel cover 76, which covers abase panel 75. AnRFID tag reader 77 is mounted on the underside of thebase panel cover 76 below eachrecess 82 and fits within apertures in thebase panel 75. Notably, thetransition platform assembly 80 is located such that therecesses 82 are within the frame 44 of the automated dispensingmachine 40, i.e., within the “footprint” of themachine 40. - Two substantially identical diverting
units conveyor 71, with divertingunit 84 a being positioned slightly upstream of the divertingunit 84 b. Two substantiallyidentical return units conveyor 71, with thereturn unit 88 a being positioned in alignment with the divertingunit 84 a and thereturn unit 88 b being positioned in alignment with the divertingunit 84 b. These are discussed separately below. - Each
diverter unit guide 85 that extends over theconveyor 70,diverter rods 86 that extend from and retract into theguide 85, and a vertically-disposedpaddle 87 that is suspended from therods 86, and a pneumatic actuator (not shown) that acts to retract and extend therods 86. When therods 86 are retracted into theguide 85, thepaddle 87 is positioned across theconveyor 71 from thetransition platform assembly 80. Eachpaddle 87 is positioned to be generally aligned with arespective recess 82 of thealigner panel 81. - Each of the
return units guide 89,rods 90, and a pneumatic actuator (not shown) similar to theguides 85,rods 86 and actuator discussed above. An L-shaped, vertically-disposedsweep arm 91 is mounted on the end of each set of rods 90 (with thesweep arm 91 of thereturn unit 88 a being a mirror image of thesweep arm 91 of thereturn unit 88 b). When therods 90 are extended from theguides 89 and across theconveyor 70, thesweep arm 91 of eachreturn unit recesses 82 is between thesweep arm 91 and theconveyor 70. In this embodiment, each of thesweep arms 91 is offset from thepaddle 87 of itscorresponding diverter unit lower segment 91 a can pass beneath thepaddle 87 and itsvertical segment 91 b can pass beside thepaddle 87. Also, the shape of thesweep arms 91 enables them to avoid interference with thegripper assembly 100 as it approaches thetransition platform assembly 80. - In the illustrated embodiment, the automated dispensing
machine 40 is similar to that described in U.S. Patent Publication No. 2009-0178464, supra, with the vial dispensing, labeling, capping and offloading stations removed. Thegripper assembly 100, which includes therobotic arm 102 andgripper fingers 104 mounted thereon, is mounted on acarriage 106 that can translate vertically on arail 108 and can revolve around thecarriage 106. Therail 108 is mounted for translation on a pair of horizontal rails (not shown) that enable thearm 102 to be transported to different positions within the automated dispensingmachine 40. Theautomated dispensing machine 40 includes a large number of dispensing bins, or cells, 42, each of which contains a bulk supply of a pharmaceutical (typically pills or tablets). Typically, different pharmaceuticals are contained indifferent bins 42. Each of thebins 42 is configured to dispense a given pharmaceutical into a vial held by thegripper fingers 104. Dispensing is achieved by directing air flow within abin 42 that forces individual tablets into and out of a dispensing outlet into a waiting vial. The tablets are singulated and counted during dispensing. Further discussion of the details of the dispensing and counting operations can be found in, e.g., U.S. Pat. No. 6,971,541 to Williams and U.S. patent application Ser. Nos. 12/492,933 and 12/473,757, the disclosure of each of which is hereby incorporated herein in its entirety. Those skilled in this art will recognize that other configurations of automated pharmacy machines, such as those shown in U.S. Pat. No. 7,289,879, may also be employed. - Referring to
FIG. 1 , acontroller 200 is connected with theconveyor unit 70, thetransition platform assembly 80 and the automated dispensingmachine 40 for controlling operations. In some embodiments, thecontroller 200 will be operatively connected with an external device, such as a personal or mainframe computer, that provides input information regarding prescriptions. In other embodiments, thecontroller 200 may be a stand-alone computer that directly receives manual input from a pharmacist or other operator. An exemplary controller is a conventional microprocessor-based personal computer. Thecontroller 200 may also be divided into multiple computers, networks, processors, etc., that combine and/or share operations. For example, one portion of thecontroller 200 may be internal to the automated dispensingmachine 40 and control the dispensing operations of thesystem 20, and another portion of thecontroller 200 may be external to automated dispensingmachine 40 and control the conveying operations of thesystem 20. - The
system 20 also includes a series of sensors connected with thecontroller 200 for detecting the presence of objects within thesystem 20.Sensors transition platform assembly 80 to detect the presence of apuck 72 in arespective recess 82.Sensors transition platform assembly 80 to detect the presence of a vial within apuck 72 as thepuck 72 resides in arespective recess 82. Asensor 128 is positioned on the frame of the automated dispensingmachine 40 to detect the presence of thegripping assembly 100 above thebase plate cover 76.Sensors conveyor 71 to detect the presence of a puck in position to be diverted by one of the divertingunits - Operation of the
system 20 commences with apuck 72 on theconveyor 71 upstream of thetransition platform assembly 80 receiving a vial V of the proper size for a particular prescription. Depending on the arrangement of thesystem 20, the vial V may be selected based on the reading of the RFID tag on thepuck 72, or may be part of a lengthy “run” of prescriptions using the same size vial. The vial V may or may not be labeled at this point in the operations. Also, the vial V may be manually inserted into thepuck 72 or may be inserted automatically (e.g., with a robotic arm or a pick-and-place device). - The
conveyor 70 then conveys thepuck 72 and vial V downstream (seeBlock 300 ofFIG. 10 ). In some embodiments, a “hold-back” device, such as a retractable stop, holds multiple pucks/vials in place on theconveyor 71 upstream of thetransition platform assembly 80 and releases them downstream one at a time. When one of thesensors recess 82 is void of apuck 72, it signals the hold-back device to release thenext puck 72 and vial V toward thetransition platform assembly 80. - As the
puck 72 and vial V reach thetransition platform assembly 80 and thesensor puck 72 in one of therecess 82, thecontroller 200 selects theappropriate diverter unit puck 72 from theconveyor 71 and signals the selected diverter unit to divert thepuck 72 and vial V. Actuation of thediverter unit sensors puck 72 in front of therespective paddle 87 of adiverter unit puck 72 is detected by thesensor controller 200 actuates thediverter unit puck 72. In some embodiments, thecontroller 200 selects thediverter unit 84 b (which is farther downstream) as a default unless it already houses apuck 72. - When the selected
diverter unit diverter unit 84 a inFIG. 4 ) is actuated, therods 86 thereof extend from theguide 85, thereby forcing thepaddle 87 toward thealigner plate 81 along a diversion path P (Block 310 ofFIG. 10 ). Thepaddle 87 contacts thepuck 72 and slides thepuck 72 and the vial V from its location on theconveyor 70 into the correspondingrecess 82. The V-shape of the edge of therecess 82 assists in positioning thepuck 72 and vial V for thegripper assembly 100. As noted above, the position of thepuck 72 in therecess 82 is within the footprint of the frame 44 of themachine 40. - In some embodiments, it may be particularly advantageous for the
puck 72 to be positioned within the footprint of themachine 40. For example, if, as is the case with the illustrated system, thepuck 72 is diverted completely from theconveyor 71 as the vial is being filled by the automated dispensingmachine 40, then the automated dispensingmachine 40 may be oriented in any orientation that is considered to be desirable or advantageous. In certain embodiments, the ability to align the automated dispensingmachine 40 to be generally perpendicular to the direction of conveyor travel may be advantageous, as it may enable the density ofautomated dispensing machines 40 servicing the same conveyor to be increased and/or maximized. - Once the
puck 72 and vial V are in place, thesensors RFID sensor 77 reads the RFID tag on thepuck 72. Sensing of the RFID tag initiates a fill request for theautomated pharmacy machine 40 via thecontroller 200. The RFID tag may correspond to a particular prescription stored in the database of thecontroller 200, or may include the prescription information itself. Detection of the RFID tag indicates to thecontroller 200 the identity and number of pharmaceutical tablets that are to be dispensed into the vial V. - The
controller 200 signals thegripper assembly 100 to approach thetransition platform assembly 80. As an initial operation, thegripper assembly 100 moves to thepuck 72 and vial V and grasps the vial with the fingers 104 (FIG. 5 ). Thegripper assembly 100 then forces the vial V downwardly and pushes the vial V slightly toward the conveyor 70 (FIGS. 6A and 6B ). This action forces the vial V against the circumferential edge of thecavity 74 of thepuck 72 that is nearest to theconveyor 70, which tends to center the vial V within thecavity 74 of thepuck 72 relative to the side edges of the recess 82 (FIG. 6B ), and ensures that thegripper fingers 104 grasp the vial V at a consistent height. During the adjustment of the vial V within thepuck 72, thepuck 72 may also move slightly away from the aligner plate 81 (Block 400 ofFIG. 11 ). Thus, this movement drives thepuck 72 from its diverted position (FIG. 6A ) to an X-Y retrieval position (FIG. 6B ) to which the vial V can be returned after filling. Based on the position of thegripping assembly 100 and the known position of therecess 82, determined through pre-calibration of thesystem 20, thecontroller 200 records the retrieval position to which thepuck 72 and vial V are pushed, and utilizes that retrieval position as a coordinate once the filled vial V is returned to thepuck 72. - After the positions of the vial and
puck 72 have been adjusted and the RFID tag has been detected, thecontroller 200 signals thegripping assembly 100 to lift the vial V straight up from thecavity 74 of the puck 72 (so as not to disturb the adjusted position of the puck 72)(seeFIG. 9 ,Block 320 ofFIG. 10 andBlock 410 ofFIG. 11 ). Once the bottom of the vial V has cleared the upper edges of thepuck 72, thegripper assembly 100 transports the vial V to theappropriate cell 42 for dispensing of a pharmaceutical from a bin therein into the vial (Block 330 ofFIG. 10 ). Again, exemplary details of the dispensing are described in, for example, U.S. Pat. No. 6,971,541, supra, and need not be described herein. - Once the vial V has been filled in the
automated pharmacy machine 40, thecontroller 200 signals thegripping assembly 100 to return the filled vial V to a position above the puck 72 (Block 340 ofFIG. 10 andBlock 420 ofFIG. 11 ). The grippingassembly 100 then lowers the filled vial V into thecavity 74 of the puck 72 (FIG. 8 ). As noted above, thecontroller 200 knows the position of thecavity 74 due to the adjustment maneuver performed prior to removal of the vial V from thepuck 72, and attempts to place the vial V in the center of thecavity 74. The adjustment maneuver can reduce errors (and spills) for this returning step. The grippingassembly 100 then retreats from the divertingplatform 80. - After the vial V has been returned to the puck 72 (and after correct filling is confirmed by the controller 200), the
controller 200 activates thereturn unit diverter unit puck 72 and vial V (illustrated asreturn unit 88 a inFIG. 9 ). Actuation of thereturn unit puck 72 by one or more of thesensors recess 82. Alternatively, or additionally, thecontroller 200 may detect the return of the vial V to thepuck 72 based on the releasing motion of thegripping assembly 100. or by the absence of thegripping assembly 100 above thebase plate cover 76 as detected by thesensor 128. - Actuation of the
return unit rods 90 to retract within theguide 89, thereby drawing thesweep arm 91 toward the conveyor 70 (Block 350 ofFIG. 10 ). During this movement, thesweep arm 91 contacts thepuck 72 and pushes thepuck 72 and filled vial V onto theconveyor 70 to essentially the same location on theconveyor 70 from which it was originally diverted. From there, the filled vial V andpuck 72 are conveyed downstream for further processing (e.g., capping, packaging, etc.). The absence of apuck 72 in therecess 82 is detected by one of thesensors 120, which induces thecontroller 200 to initiate the release of anotherpuck 72 from the hold-back device on theconveyor 71. - Those skilled in this art will appreciate that the
diverter unit 84 b and thereturn unit 88 b operate in the same manner as thediverter unit 84 a and thereturn unit 88 a to divert carriers and vials to therecess 82 and return them to theconveyor 70, but do so along a non-coincident, substantially parallel path P2. - Those skilled in this art will appreciate that the
system 20 may be embodied in other forms. For example, thediverter units paddles 87, and/or may include other means for extending and retracting the diverting members. Similarly, thereturn units sweep arms 91, and/or may include other means for extending and retracting the return members. - In addition, although the
pucks 72 represent one embodiment of vial carrier that is suitable for use with this invention, other vial carriers of different shapes and sizes may also be employed. In some embodiments, thepucks 72 may lack an RFID tag, such that the sequence of prescription dispensing is retained in the controller itself, or thepucks 72 may include a different type of identifying indicia, such as a bar code. - It should also be apparent to those of skill in this art that the
system 20 may be constructed by retrofitting an existingautomated pharmacy machine 40. For example, an automated pharmacy machine such as that described in U.S. Patent Publication No. 2009-0178464, supra, may in some embodiments be modified by removing the vial dispensing, labeling, and capping stations. These system components may be replaced with additional dispensing cells, and/or a number of cells may be omitted to allow mounting of thetransition platform assembly 80. - Also, the
system 20 may be employed in a stand-alone fashion, with allpucks 72 and vials V being filled by thesystem 20, or thesystem 20 may be part of a larger high-volume filling operation. In such an operation, pucks and vials to be filled by thesystem 20 may be diverted onto or toward theconveyor unit 70 from a main line conveyor or the like that also conveys other pucks and vials to other dispensing apparatus. In other embodiments, the conveyor unit may be routed through theautomated pharmacy machine 40. - Further, the adjustment maneuver performed with the
gripper 102 may be performed in other ways. For example, thegripper 102 may simply contact the vial or puck while adjusting its position rather than actually grasping the vial, with that thecontroller 200 recording the position accordingly. The action of forcing the vial downwardly may be omitted in some embodiments. - Moreover, in some embodiments the
automated pharmacy machine 40 may include a vial dispensing station and a vial labeling station that select a particular vial and label it prior to pharmaceutical tablets being dispensed into the vial. In such a system, the puck or other carrier can be conveyed without a vial to thetransition platform assembly 80, where it can receive a filled, labeled vial. The filled, labeled vial and puck can then be returned to theconveyor 71 with one of thereturn units - The foregoing embodiments are illustrative of the present invention, and are not to be construed as limiting thereof. Although exemplary embodiments of this invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. The invention is defined by the following claims, with equivalents of the claims to be included therein.
Claims (14)
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Also Published As
Publication number | Publication date |
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US10035258B2 (en) | 2018-07-31 |
US9241875B2 (en) | 2016-01-26 |
US20140041750A1 (en) | 2014-02-13 |
US20160129585A1 (en) | 2016-05-12 |
CA2742432A1 (en) | 2011-12-10 |
CA2742432C (en) | 2017-02-28 |
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