Patent Grant
10383438
The present invention relates to devices and methods for providing controlled dispensing of items from a dispensing cabinet. More particularly, the present invention relates to devices and methods for controlled dispensing of selected items from a secured drawer having one or more locked bins.
In many facilities such as hospitals and clinics, selected pharmaceutical and supply items (Items) are held in secure storage locations which are often removed from the patients who use them. As new medications and procedures are prescribed by the doctor, or when prescribed medications or procedures become due, the nurse or technician (the User) uses the secure cabinet to obtain these medications or supplies. The processor on each cabinet is programmable to monitor the access to the pharmaceutical and supply items in these fixed cabinets, allowing the current on hand inventory and the need for replenishment to be communicated to a central processor at the central pharmacy and supply storage locations.
When a user logs into the cabinet's processor, they are typically given access to multiple items, stored behind locked doors or drawers, that selectively unlock. Amongst the many items that can be stored in a cabinet, for certain items, it is desirable to limit access to just a single item type, so the processor can record exactly which items were available to the user to be taken. This is particularly true of narcotic medications. In some cases, it is desirable to limit access to on individual item at a time. These more secure process are achieved by storing items in bins within locked drawers and allow access to individual bins to users, such as nurses. The user will typically enter their own personal identification (ID) and the ID of a specific patient to see medications which are approved overall for that selected patient. Specified bins may then be unlocked to provide access to items such as approved medications which are stored in the unlocked bins. However, while allowing access to certain items, these cabinets may still prohibit to other bins to which the user may be restricted from accessing, particularly in the case of narcotics.
However, in order to limit access to specified bins, the lids on each individual bin must be able to lock and unlock when specified and must also be able to do so repeatedly without failure. This selective locking of the lids typically requires the use of various software systems to track user access and further requires mechanical, electrical, or electro-mechanical mechanisms such as solenoids integrated with each individual bin.
Because of the repeated locking and unlocking of individual bins, the tracking of user access, many of these locking mechanisms are subject to failure resulting in lids which may not lock or unlock properly when needed or resulting in the incorrect lids locking or unlocking improperly. Alternatively, the resulting system may be overly complex and difficult to repair or maintain.
Thus, a system which allows for the tracking as well as locking and unlocking of selected lids from a dispensing cabinet in an efficient, reliable, and repeatable manner is desired.
The mechanisms described for the controlled dispensing of medication, pharmaceutical agents, or other supplies may be incorporated in any number of dispensing cabinets that are generally utilized in facilities where the automated tracking and dispensation of items is tightly controlled or regulated. These cabinets may incorporate one or more drawers which may have at least one or a plurality of individual bins which are each locked by a lid. Such a drawer assembly may generally comprise a bottom housing which encloses the bottom of the drawer and a top housing which forms a frame for holding and positioning a plurality of bins aligned in a matrix array.
Generally, one variation of an apparatus for selective actuation may comprise an index plate having one or more protrusions extending from a surface of the plate, a first actuator configured to translate the plate in a first direction, a second actuator configured to translate the plate in a second direction different from the first direction, wherein the one or more protrusions define one or more rows which are arranged upon the plate in a collinear arrangement, and wherein the one or more protrusions further define one or more columns which are arranged upon the plate at an angle relative to a proximal or distal edge of the plate such that each protrusion is off-set relative to an adjacent protrusion along the column.
In another variation, an apparatus for selective actuation may generally comprise one or more bins arranged relative to one another and each having a corresponding trigger release arm, an index plate positioned in proximity to the one or more bins and having one or more protrusions extending from a surface of the plate, a first actuator configured to translate the plate in a first direction, a second actuator configured to translate the plate in a second direction transverse relative to the first direction, wherein the one or more protrusions define one or more rows which are arranged upon the plate in a collinear arrangement such that selective translation of the plate along the first direction aligns a single protrusion to a single trigger release arm, and wherein the one or more protrusions further define one or more columns which are arranged upon the plate at an angle relative to a proximal or distal edge of the plate such that each protrusion is off-set relative to an adjacent protrusion along the column such that selective translation of the plate along the second direction engages the single protrusion with the single trigger release arm.
In use, one method for selective actuation using the assemblies described herein may generally comprise translating an index plate in a first direction in proximity to one or more bins arranged relative to one another and each having a corresponding trigger release arm, wherein the index plate has one or more protrusions extending from a surface of the plate and where the one or more protrusions define one or more rows arranged upon the plate in a collinear arrangement, aligning a single protrusion to a single trigger release arm along the first direction, and translating the index plate in a second direction transverse to the first direction such that the single protrusion engages with the single trigger release arm, wherein the one or more protrusions further define one or more columns which are arranged upon the plate at an angle relative to a proximal or distal edge of the plate such that each protrusion is off-set relative to an adjacent protrusion along the column.
With the bins supported by the top housing, they may be positioned above a selector index plate which may comprises a flat plate having a width and a length which is sized to extend along the length of the bottom housing. The width of the index plate may be designed to be relatively shorter than the width of the bottom housing to allow for the index plate to translate within the enclosure. The index plate may define one or more guide slots defined at least partially along the width to accommodate corresponding guides which may protrude from the bottom housing and through the guide slots. The index plate may have a first gear rack and a second gear rack either defined upon the index plate or otherwise attached upon the index plate near or at a respective proximal edge and near or at a respective distal edge of the index plate such that the first rack and second rack extend at least partially along the width of the index plate.
An actuator (e.g., selector motor and encoder) may be secured within the drawer, e.g., near or at the proximal end of the index plate, and the actuator may be in communication with a controller contained either locally within the cabinet or remotely from the cabinet. A selector gear may be rotatably coupled to the actuator and the selector gear may in turn be engaged to a first gear (e.g., pinion gear) positioned adjacent to the selector gear. The first gear may be engaged with the first gear rack and may also be coupled to a drive shaft which extends over the width of the bottom enclosure and index plate where a second gear (e.g., pinion gear) may be attached to a distal end of the drive shaft. The second gear may in turn be rotatably engaged with the second gear rack located along the width of the index plate near or at its distal edge.
The drive shaft and first and second gears may be supported by a first drive shaft support and a second drive shaft support extending from the bottom enclosure such that rotation of the actuator may rotate the selector gear, which in turn may engage the first gear. The first gear may in turn torque the drive shaft about its longitudinal axis to rotate the second gear in a corresponding manner while maintained in place by the first and second drive shaft supports. The corresponding rotation of the first gear and second gear may engage the respective first gear rack and second gear rack along the index plate to urge the translation of the index plate accordingly along its width in a first direction (e.g., translational direction). Because both the first gear rack and second gear rack are engaged simultaneously, translation of the index plate along first direction may be maintained in a smooth and even manner.
In addition to translating the index plate along the first direction, the index plate may also be translated along a second direction, e.g., a direction transverse to the first direction and which is parallel with the direction by which the drawer is opened) when triggering a lid open on a selected bin. A motor such as a release actuator may be mounted within the drawer positioned optionally in proximity to the actuator or mounted in another location within the drawer. Actuating the release actuator may rotate a cam extending from the release actuator such that the release actuator urges the index plate along the second direction. The cam may extend from the release actuator such that it follows within a guide slot defined along the width of the index plate. As the cam is rotated, e.g., a single revolution, it may push against the side of the guide slot at a predetermined distance to urge the index plate a short distance in the second direction.
With the index plate thus configured to translate in a first direction along its with and in a second direction along its length, the index plate may be accordingly positioned within the drawer relative to the bins to open any selected one of the bins. Each of the bins may have a corresponding trigger release arm which protrudes down from a release mechanism along each respective bin and at least partially into the bottom enclosure. The index plate may have a plurality of pins or projections which extend at least partially from the surface of the index plate and these pins or projections may be arranged in a matrix where the individual pins are aligned collinearly with one another along the first direction but staggered or off-set from one another along the second direction such that the column of pins defines an angle along the second direction.
During use, the index plate may be positioned in close proximity to the trigger release arms such that the index plate may freely translate beneath the arms but close enough so that the pins may come into contact at least partially against the arms for actuation. Once a preselected single pin or projection has been aligned with a particular arm which corresponds to a preselected bin to be actuated, the release actuator may be activated to urge the index plate along the second direction such that the aligned pin abuts the selected trigger release arm to release the corresponding lid. Because each of the pins along the column of pins on the index plate are off-set relative to one another, the other pins may slide freely along the second direction without interference so that no other arms are actuated and the other lids remain in their closed state.
The index plate may have a number of rows of pins which correspond to the number of rows of bins in the matrix. However, the number of columns of pins may be less than the number of columns of bins in the matrix array and the index plate may still efficiently release any of the lids of any bin. Although in alternative variations, the number of rows of pins may also be less than the number of rows of bins in the matrix array.
In alternative variations, the drawer may be configured to have any fewer or greater number of bins in which case the index plate may be sized and configured accordingly. In variations where a relatively greater number of bins are configured in the drawer, more than one index plate may be utilized for actuating any of the bins and in any sequence, if so desired, utilizing the position and methods described herein. In other variations, the bins may be arranged in any number of various configurations so long as the drawer is able to accommodate.
In yet another variation, two separate index plates may be used in a drawer with a relatively large number of bins. A first selector index plate having pins arranged in two columns may be positioned adjacent to a second selector index plate similarly having pins arranged in two columns. Each of the index plates may be translated along their width by a single actuator (e.g., selector motor and encoder) which rotatingly engage both index plates along a respective first rack and second rack defined along both of the index plates. In this variation, a single rack along both edges of the index plates may allow for a single actuator to translate both plates along their widths but in alternative variations, each index plate may instead utilize a separate actuator for driving each individual index plate. To translate each of the index plates along their length in the second direction, the first release actuator may be in communication with the first index plate while a second release actuator may be in communication with the second index plate. However, in alternative variations, a single release actuator engaged to both index plates may be used to translate each of the plates simultaneously.
While a single index plate may be utilized for actuating all the bins in the drawer assembly, having two separate index plates positioned adjacent to one another may allow for the translation of one or both plates to efficiently actuate individual bins. Moreover, additional index plates may be utilized, for example, three or more index plates positioned adjacent to one another, if so desired in other variations.
While the drawer assembly may be pulled from the cabinet in which it resides by pulling the entire drawer enclosure, variations of the drawer assembly may optionally incorporate slides which enable a portion of the drawer to be pulled out from the cabinet to access the bins. This assembly may still allow for the lids on individual bins to be actuated, as described herein, and may allow for the entire drawer assembly to be efficiently removed from the cabinet, if needed or desired. It is intended that this variation may be utilized with any of the index plate actuation assemblies described herein and in any combination as so desired.
In addition to the index plate having individual pins projecting from the surface of the plate, alternative variations of the index plate may be used. For instance, the selector index plate may be configured with one or more ridges defined to form a continuous ridge along the length of the index plate such that the ridges protrude from the surface of the index plate rather than having individual pins. Like the pins described herein, the ridges may be formed at an angle relative to the proximal and distal edges of the index plate so that the ridges form an off-set protrusion relative to the plurality of trigger release arms.
The index plate may have a first selector ridge second selector ridge, third selector ridge, and fourth selector ridge forming parallel ridges which protrude from a first surface of the index plate and which are each angled relative to the index plate. In between each of the ridges are one or more index plate ridges which form ridges or protrusions which protrude from the index plate from a second surface of the index plate opposite to the direction of protrusion of the ridges. A release plate may be positioned beneath the index plate in close proximity to the bottom or second surface of the index plate but at a distance to allow for the free and uninhibited translation of the index plate relative to the release plate. The release plate may have one or more ridges which are defined to extend along the width of the release plate such that the ridges protrude from a first or top surface of the plate.
An example is shown where three ridges are defined along the release plate including a first lifter ramp, a second lifter ramp, and a third lifter ramp where each of the lifter ramps are defined to extend along the width of the release plate and are parallel to one another. However, in other variations, the lifter ramps may be formed in other configurations which are not parallel to one another and which may vary in number. Moreover, the lifter ramps may be formed in interrupted (uniformly or otherwise) patterns rather than in a continuous ridge. While the index plate is formed to have a width which is less than a width of the drawer enclosure to allow its translation within the drawer, the release plate may be configured to extend at least to the width of the bin matrix beneath the trigger release arms.
The index plate may be translated along the first direction to reposition the index plate such that a portion of the second ridge is directly beneath the trigger release arm. A first release actuator may be positioned to be in engagement with the index plate for translating the index plate along a first direction along a width of the index plate in a manner similarly described herein while uninhibited by the trigger release arms and the release plate. In this example, the second selector ridge is translated by actuator until a portion of ridge aligned directly beneath a preselected trigger release arm which is engaged with the lid. A second release actuator engaged with the release plate may be configured to translate the release plate along its length such that the one or more lifter ramps may abut against the one or more index plate ridges. This contact by the release plate may cause the index plate to lift away from the release plate. Because the portion of ridge is aligned directly beneath the trigger release arm, the ridge may come into contact and lift the arm to cause the lid to unlock enabling the lid to be opened. Because of the angle at which each of the ridges are aligned and because of their spacing from one another and relative to the spacing between the trigger release arms, the remaining trigger release arms may be un-actuated such that the non-selected lids remain in their locked configuration.
Regardless of the variation of the index plate used, one or more sensors may be incorporated with each of the bins (or at least one bin) to indicate to the controller that a lid has been opened either intentionally from a pre-selected bin or unintentionally. These sensors may function independently of the index plate operation or they may function in conjunction with the index plate positioning. In the event that a lid from a pre-selected bin is opened, the sensor detecting the opened lid may serve as confirmation to the controller that the appropriate lid has been opened. In the event that one or more lids from non-selected bins are opened (unintentionally or unauthorized), the sensors may serve as an indicator of non-authorized access to the non-selected bins.
In either case, one or more sensor grids, e.g., capacitive sensor grids integrated on PCBs, may be incorporated into the drawer assembly. The sensor grids may be one or more sensors, e.g., optical detector, positioned along the grid at locations which correspond to each bin (or at least one bin) release mechanism. Each row or column of the bin matrix may have a corresponding sensor grid extending along the corresponding row or column and at least one interconnecting bus or connector, e.g., drawer open detector and interconnect PCB, may extend along the length or width of the bin matrix for connection to each of the sensor grids. Each of the sensor grids may be electrically coupled to the interconnecting bus or connector which in turn may be electrically coupled or in electrical communication with the controller.
In addition to the various index plates, variably sized bins may be optionally sized in any number of different configurations and regardless of the bin size or configuration, it is intended that any of the index plate variations (including one or more index plate configurations) may be utilized in any combination with these variably sized bin configurations. The bins may be individually formed into separate assemblies which are arranged in the bin matrix array or they may be formed as continuous chambers which extend along the width of the drawer tray and which may be divided into individual bins by the positioning of dividers within selected divider slots. Depending upon the formed bin configuration, a lid of appropriate size may be secured to cover the divided bin. Examples of various lid sizes for accommodating different size bins are shown where the lids may have a first size for a standard bin size, the lids may have a second size which are double the size of the standard bin, and lids may have a third size which are triple the size of the standard bin. Each of the lids, regardless of its size, may utilize a single latch to securely cover the bin and regardless of the bin size and any of the index plate variations described herein may be utilized with any bin size configuration. The controller may be programmed accordingly to actuate the appropriate lid. The example shown in the figure is intended to be illustrative of the various bin configurations. Other variations may utilize any number of bin sizes and configurations and are intended to be within the scope of this disclosure.
To accommodate the variably configured bin arrangement, the number and arrangement of sensor grids may also be varied accordingly. Each of the sensor grids may be connected to the interconnecting bus or connector via connectors. If the bin configurations are altered, the number and positioning of the sensor grids may be altered accordingly.
In yet another variation, the drawer assembly may have separately molded bins each having a lid and trigger release arm which are individually securable in the assembly, e.g., such as by snapping the bin assembly in place within the drawer. This variation may allow for alternative bin array arrangements where the drawer assembly may incorporate individual bin assemblies which are arranged in any number of configurations. Additionally, this variation may allow for the removal and/or insertion of individual bin assemblies from the drawer without having to remove the entire drawer.
The drawer may incorporate a closing mechanism such as a plate or shelf having one or more rollers incorporated along its distal edge. If one or more lids were in an open configuration, closing the drawer relative to the closing mechanism may force the lids to close shut automatically.
With the use of the devices and methods described herein, use of the actuators in the manner described may save on parts and assembly costs as the assemblies described may utilize fewer components than conventional systems. Moreover, the number of bins may be scaled to any number for use with the index plate assemblies.
These variations and any of the different features described herein are intended to be utilized in any number of combinations with the different index plate variations. While specific combinations described herein are intended to be illustrative, other various combinations are expressly intended to be within the scope of this disclosure.
The mechanisms described for the controlled dispensing of medication, pharmaceutical agents, or other supplies may be incorporated in any number of dispensing cabinets that are generally utilized in facilities where the automated tracking and dispensation of supplies is tightly controlled or regulated. An example of a typical dispensing cabinet is shown in the perspective view of
While the configuration of the cabinet 10 may be widely varied, this example illustrates how the cabinet 10 may include a compartment 18 which is covered by a locking door 20. Another configuration is shown where the cabinet 10 may include one or more individual drawers 22 each which when unlocked may spring forward, or alternatively have an optional handle 24 for opening and accessing each of the drawers 22, once unlocked. While the drawers 22 may be individually locked or unlocked, access to the drawers 22 themselves may be further controlled by one or more optional locking doors 26 that can selectively cover one or more of the drawers 22. The one or more doors 26 may optionally locked via a locking mechanism 28 and opened via hinges 30 and individual handles 32 to open and close the doors 26 for gaining access to the drawers 22 which may also be selectively locked as well depending upon the level of access provided to a user.
Each of the drawers 22 may include one or more individual bins 36 which may be individually opened or which may have a non-locking or locking lid 38, as shown in the opened drawer 34. The drawers 22, doors 26, as well as the individual lids 38 may incorporate one or more sensors, as known in the art, which may communicate with the processor to sense, detect, and/or track which drawers, doors, or lids are being accessed by the user. In many cases, the user needs access to all the drawers 22, or, if a user is restricted, it is usually to a broad class such as narcotics, that can be kept in one group of drawers. However, controlled access to individual bins 36 within a drawer is needed in many instances.
Hence, controlling access to a particular bin 36 is needed not only for restricting access but also for tracking purposes. In such a case, a user will generally enter their identification such as through identification interface 16 or through interface 12, 14 such as by entry of an optional password. Once the user gains electronic entry to the system, one or more particular items in a corresponding drawer 22 and corresponding bin 36 may be unlocked to provide access to the previously locked item. However, if the lids 38 in a drawer 22 are each locked, access may be provided to the user only to one or more individual bins 36 by unlocking only those individual bins 36 while maintaining the remaining lids 38 in a locked state to restrict their access.
The unlocking of selected individual bins 36 may be accomplished by one or more selector index plate assemblies which may effectively and efficiently seek and unlock a selected bin 36, as described in further herein. The use of a selector plate assembly and variations of the plate assembly may be utilized in any number of storage applications where the release of the stored contents is to be controlled. The cabinets 10 as described above may incorporate such assemblies as well as other cabinet storage variations such as the cabinet 40 shown in the perspective view of
Another variation is shown in the perspective view of
With the bins 56 supported by the top housing 54, they may be positioned above a selector index plate 58 which may comprises a flat plate having a width and a length (e.g., in this variation, a width of about 22 inches and a length of about 22 inches) which is sized to extend along the length of the bottom housing 52. Such an index plate 58 may be fabricated from any number of materials, e.g., steel, plastic, aluminum, wood, composites, etc. The width of the index plate 58 may be designed to be relatively shorter than the width of the bottom housing 52 to allow for the index plate 58 to translate within the enclosure. The index plate 58 may define one or more guide slots 60, 62 defined at least partially along the width to accommodate corresponding guides 64, 66 which may protrude from the bottom housing 52 and through the guide slots 60, 62. The index plate 58 may have a first gear rack 76 and a second gear rack 78 either defined upon the index plate 58 or otherwise attached upon the index plate 58 near or at a respective proximal edge and near or at a respective distal edge of the index plate 58 such that the first rack 76 and second rack 78 extend at least partially along the width of the index plate 58.
An actuator 68 (e.g., selector motor and encoder) may be secured within the drawer, e.g., near or at the proximal end of the index plate 58, and the actuator 68 may be in communication with a controller contained either locally within the cabinet or remotely from the cabinet. A selector gear 70 may be rotatably coupled to the actuator 68 and the selector gear 70 may in turn be engaged to a first gear 74A (e.g., pinion gear) positioned adjacent to the selector gear 70. The first gear 74A may be engaged with the first gear rack 76 and may also be coupled to a drive shaft 72 which extends over the width of the bottom enclosure 52 and index plate 58 where a second gear 74B (e.g., pinion gear) may be attached to a distal end of the drive shaft 72. The second gear 74B may in turn be rotatably engaged with the second gear rack 78 located along the width of the index plate 58 near or at its distal edge, as also shown in the exploded perspective view of
The drive shaft 72 and first and second gears 74A, 74B may be supported by a first drive shaft support 100A and a second drive shaft support 100B extending from the bottom enclosure 52 such that rotation of the actuator 68 may rotate the selector gear 70, which in turn may engage the first gear 74A. The first gear 74A may in turn torque the drive shaft 72 about its longitudinal axis to rotate the second gear 74B in a corresponding manner while maintained in place by the first and second drive shaft supports 100A, 100B. The corresponding rotation of the first gear 74A and second gear 74B may engage the respective first gear rack 76 and second gear rack 78 along the index plate 58 to urge the translation of the index plate 58 accordingly along it width, as indicated by first direction 86 (e.g., translational direction). Because both first gear rack 76 and second gear rack 78 are engaged simultaneously, translation of the index plate 58 along first direction 86 may be maintained in a smooth and even manner.
Referring back to
With the index plate 58 thus configured to translate in a first direction 86 along its with and in a second direction 88 along its length, the index plate 58 may be accordingly positioned within the drawer relative to the bins 56 to open any selected one of the bins. Each of the bins 56 may have a corresponding trigger release arm 92 which protrudes down from a release mechanism along each respective bin 56 and at least partially into the bottom enclosure 52. The index plate 58 may have a plurality of pins or projections 90 which extend at least partially from the surface of the index plate 58, e.g., 0.10 in to 0.30 in, and these pins or projections 90 may be arranged in a matrix where the individual pins are aligned collinearly with one another along the first direction 86 but staggered or off-set from one another along the second direction 88 such that the column of pins 90 defines an angle, e.g., 2 to 5 degrees, along the second direction 88. In other variations, these pins 90 may be aligned in alternative arrangements which are regular or irregular in pattern. Moreover, the pins may be formed into any number of shapes having various cross-sections, e.g., circular, square, polygonal, curved, etc. The variation shown in
The index plate 58 may be shown having a first pin A1 along the first column and first row, second pin A2 along the first column and second row, third pin A3 along the first column and third row, fourth pin A4 along the first column and fourth row, and fifth pin A5 along the first column and fifth row. The second column may have a first pin B1 along the second column and first row, second pin B2 along the second column and second row, third pin B3 along the second column and third row, fourth pin B4 along the second column and fourth row, and fifth pin B5 along the second column and fifth row. Likewise, the third column may have a first pin C1 along the third column and first row, second pin C2 along the third column and second row, third pin C3 along the third column and third row, fourth pin C4 along the third column and fourth row, and fifth pin C5 along the third column and fifth row.
With such an arrangement, the pins 90 along the index plate 58 may trigger any of the trigger release arms 92 to release a corresponding lid, as described in further detail herein. Moreover, while the configuration of the index plate 58 shown is for a drawer variation having thirty bins, other drawer variations having different arrangements of the bins as well as differing number of bins may have an index plate 58 which is configured in an alternative arrangement; however, the method of operation may remain essentially similar.
An example for operating the index plate 58 is shown in the perspective views of
While the movement of the index plate 58 along the first direction 86 and second direction 88 are shown as being linear, other variations may move the index plate 58 in alternative motions instead, e.g., linear, curved, rounded, etc. for actuating the trigger release arm. Moreover, while actuation of the trigger release arm is described as a mechanical actuation created by the abutment of the pin against the trigger release arm, other actuation mechanisms may incorporate various other motions or mechanisms such as rollers, levers, springs, hinges, pivots, linear slides etc. and may also include alternative interactions such as electrical transmission, induction, optics, pneumatic, hydraulic, etc. Additionally, the index plate 58 may be configured to actuate any number of trigger release arms sequentially or simultaneously in alternative configurations.
An optional sensor 136, e.g., optical detector, may be positioned in proximity to the lid 120 or locking arm 122 to indicate to the controller that the corresponding lid 120 is in an open configuration. The variation of the lid 120 and its locking arm 122 as well as the trigger release arm 110 is shown as one variation of how the pin 112 may be utilized to release the lid 120. Other release mechanisms may be utilized in alternative variations and are intended to be within the scope of this disclosure.
The index plate 58 may have a number of rows of pins which correspond to the number of rows of bins in the matrix. However, the number of columns of pins may be less than the number of columns of bins in the matrix array and the index plate 58 may still efficiently release any of the lids of any bin. Although in alternative variations, the number of rows of pins may also be less than the number of rows of bins in the matrix array. In the variation shown in the perspective view of
For instance, a bin opening sequence along first column 140 for bins labeled sequentially 1 to 5 may be seen. The following bin opening sequence along third column 142 for bins labeled 6 to 10 may be opened next. Then the bin opening sequence along fifth column 144 for bins labeled 11 to 15 may be opened next. AS the index plate 58 is further translated along its width, the pins of its first column may then align for the opening sequence along second column 146 for bins labeled 16 to 20. Further translation of the index plate 58 may then align its second column with the bin opening sequence along fourth column 148 for bins labeled 21 to 25, and the pins of the third column of pins of the index plate 58 may then align for the bin opening sequence along sixth column 150 for bins labeled 26 to 30, as shown in
Another example of the staggered pin alignment along index plate 58 is shown in the schematic views of
The matrix array of bins is shown for illustrative purposes as having a first column 160 for bins labeled 1 to 5, second column 162 for bins labeled 6 to 10, third column 164 for bins labeled 11 to 15, and fourth column 166 for bins labeled 16 to 20.
As the index plate 58 is aligned in position to actuate bin 1, pin A1 may be translated along its width and aligned to be adjacent to bin 1, as shown in
As shown in
Further translation of the index plate 58 along the first direction may align the pin B1 of the second column with the trigger release arm for bin 6 which is located along the second column 162. Likewise, as the index plate 58 is further translated, the respective pins such as pin B3 may be aligned with trigger release arm for bin 8, as shown in
Once the pin B1 is cleared of trigger release arm for bin 10 along the second column 162, the pin A1 along the index plate 58 may readily aligned with the trigger release arm for bin 11 along the third column 164, as shown in
In alternative variations, the drawer may be configured to have any fewer or greater number of bins in which case the index plate may be sized and configured accordingly. In variations where a relatively greater number of bins are configured in the drawer, more than one index plate may be utilized for actuating any of the bins and in any sequence, if so desired, utilizing the position and methods described herein.
While a single index plate may be utilized for actuating all the bins in the drawer assembly 170, having two separate index plates 182, 186 positioned adjacent to one another may allow for the translation of one or both plates 182, 186 to efficiently actuate individual bins. Moreover, while two separate index plates 182, 186 are shown, additional index plates may be utilized, for example, three or more index plates positioned adjacent to one another, if so desired in other variations.
While the drawer assembly may be pulled from the cabinet in which it resides by pulling the entire drawer enclosure, variations of the drawer assembly may optionally incorporate slides which enable a portion of the drawer to be pulled out from the cabinet to access the bins. For instance, drawer assembly 190 shown in
In addition to the index plate having individual pins projecting from the surface of the plate, alternative variations of the index plate may be used. For instance,
As shown in
An example is shown where three ridges are defined along the release plate 214 including a first lifter ramp 216A, a second lifter ramp 216B, and a third lifter ramp 216C where each of the lifter ramps are defined to extend along the width of the release plate 214 and are parallel to one another. However, in other variations, the lifter ramps may be formed in other configurations which are not parallel to one another and which may vary in number. Moreover, the lifter ramps may be formed in interrupted (uniformly or otherwise) patterns rather than in a continuous ridge. While the index plate 206 is formed to have a width which less than a width of the drawer enclosure to allow its translation within the drawer, the release plate 214 may be configured to extend at least to the width of the bin matrix beneath the trigger release arms 220.
The example shown in
Regardless of the variation of the index plate used, one or more sensors may be incorporated with each of the bins (or at least one bin) to indicate to the controller that a lid has been opened either intentionally from a pre-selected bin or unintentionally. These sensors may function independently of the index plate operation or they may function in conjunction with the index plate positioning. In the event that a lid from a pre-selected bin is opened, the sensor detecting the opened lid may serve as confirmation to the controller that the appropriate lid has been opened. In the event that one or more lids from non-selected bins are opened (unintentionally or unauthorized), the sensors may serve as an indicator of non-authorized access to the non-selected bins.
In either case, one or more sensor grids 240, e.g., capacitive sensor grids integrated on PCBs, may be incorporated into the drawer assembly 200, as shown in the perspective views of
An example is shown in the exploded assembly view of
With such a configuration, the release plate 214 may be actuated to release more than one lid 204 simultaneously. As shown in the perspective view of
Turning now to
To illustrate the various bin configurations which may be used herein,
To accommodate the variably configured bin arrangement, the number and arrangement of sensor grids 240 may also be varied accordingly. The configuration shown in the perspective view of
In yet another variation,
This variation and any of the different features described are intended to be utilized in any number of combinations with the different index plate variations. For instance, the drawer assembly 320 may be utilized with the detector grid assembly 310 to have various bin configurations. Such a configuration may incorporate any of the index plate assemblies described herein. While such a combination is intended to be illustrative, other such combinations are expressly intended to be within the scope of this disclosure.
The applications of the devices and methods discussed above are not limited to cabinets for the controlled release of items such as pharmaceuticals but may include any number of further applications. Modification of the above-described assemblies and methods for carrying out the invention, combinations between different variations as practicable, and variations of aspects of the invention that are obvious to those of skill in the art are intended to be within the scope of the claims.
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