Centrally controlled modular motorized testing

• US 8,903,673 B2
• Filed: 03/09/2012
• Issued: 12/02/2014
• Est. Priority Date: 03/11/2011
• Status: Active Grant

• Current Assignee: Distek, Inc.
• Original Assignee: Distek, Inc.
• Inventors: Brinker, Jeffrey, Wang, Wenyu
• Primary Examiner(s): TSAI, CAROL S W
• Application Number:
  US13/416,024
• Publication Number:
  US 20120232824A1
• Time in Patent Office: 998 Days
• Field of Search: 702/108, 73/645.6, 738/649, 738/66, 73/530.1, 422/68.1, 422/64, 220/23.87, 366/241, 366/242, 366/244, 366/143, 366/273, 366/274
• US Class Current: 702/108
• CPC Class Codes: G01N 13/00 Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects scanning-probe techniques or apparatus G01Q
• CPC Class Codes: G01N 2013/006 Dissolution of tablets or the like
• CPC Class Codes: G01N 2035/00198 Dissolution analysers
• CPC Class Codes: G01N 33/00 Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00

Abstract

In one embodiment, a modular dissolution-testing apparatus has a base unit adapted to hold and control operation of between one and eight dissolution-testing modules. The base unit has a programmable controller and a color touch screen for user interface with the controller and the modules. Each module includes a vessel for holding a solution of a dosage form dissolving in a solvent, an agitator apparatus for stirring the solution, and a motor to power—via a multi-motion assembly and a stirring shaft—stirring by, lifting of, and lowering of, the apparatus. Each module has a vessel heater and a temperature sensor, both communicatively connected to the controller for heating and regulating the temperature of the vessel contents. Each module is independently controllable by the controller, where control includes manually (by a user) or programmatically setting stirring speed, lifting and lowering apparatus, and starting and stopping stirring and heating.

Claims

1. A detachable module usable for scientific testing, the detachable module adapted to attach to, and detach from, a corresponding attachment bay of a base unit, wherein:

the base unit comprises a controller; and

the detachable module comprises;

a first connection port adapted to support communication with the controller, the first connection port adapted to connect to a corresponding connection port of the corresponding attachment bay when the detachable module is attached to the base unit;

a first sensor adapted to provide a first output to the controller via the first connection port; and

an agitator apparatus adapted to;

agitate a medium; and

be controlled by the controller via the first connection port.

2. The detachable module of claim 1, wherein the detachable module is adapted to be configured with a vessel for holding the medium to be agitated by the agitator apparatus.

3. The detachable module of claim 1, wherein:

the detachable module further comprises an electric heater adapted to heat the medium; and

the controller is adapted to control the electric heater, via the first communication port, based on the first output so as to maintain the medium at a target temperature.

4. The detachable module of claim 3, wherein the electric heater is a heating jacket directly attached to the vessel.

5. The detachable module of claim 1, wherein:

the sensor is a temperature sensor adapted to sense a temperature of the medium; and

the first output indicates the sensed temperature.

6. The detachable module of claim 1, wherein:

the module comprises a stirring shaft;

the agitator apparatus is adapted to attach to and be rotated by the stirring shaft; and

the agitator apparatus is one of a paddle and a basket.

7. The detachable module of claim 6, wherein the sensor is located within the stirring shaft.

8. The detachable module of claim 1, wherein the agitator apparatus is a reciprocating apparatus.

9. The detachable module of claim 1, wherein:

the detachable module further comprises an electric motor adapted to be communicatively connected to the controller via the first connection port;

the electric motor is adapted to be controlled by the controller; and

the electric motor is adapted to provide power for agitation of the medium by the agitator apparatus.

10. The detachable module of claim 9, wherein:

the module further comprises a stirring shaft;

the agitator apparatus is adapted to attach to and be rotated by the stirring shaft;

the module comprises a multi-motion assembly connected between the electric motor and the stirring shaft; and

the multi-motion assembly allows the electric motor to;

rotate the stirring shaft without lowering or raising the stirring shaft;

lower the stirring shaft without rotating the stirring shaft; and

raise the stirring shaft without rotating the stirring shaft.

11. The detachable module of claim 1, wherein the detachable module is adapted to:

be uniquely identifiable by a unique identification code; and

provide the unique identification code to the controller via the first connection port.

12. An apparatus usable for scientific testing, the apparatus comprising a base unit comprising:

a plurality of attachment bays;

a user interface; and

a controller communicatively connected to the user interface, wherein each of the plurality of attachment bays;

(a) is adapted to have a corresponding detachable module attach to, and detach from, the attachment bay; and

(b) comprises a first connection port adapted to;

(i) connect to a corresponding connection port of the corresponding detachable module;

(ii) support communication between the corresponding detachable module and the controller when the corresponding detachable module is attached to the attachment bay;

(iii) transmit a first output from a sensor in the corresponding detachable module to the controller; and

(iv) support control by the controller of an agitator apparatus in the corresponding detachable module, wherein the agitator apparatus is adapted to agitate a medium.

13. The apparatus of claim 12, wherein the controller is programmable by a user via the user interface.

14. The apparatus of claim 12, wherein:

the user interface is movably connected to the base unit; and

the user interface comprises a touch screen adapted to receive touch input from a user and provide visual output to the user.

15. The apparatus of claim 12, wherein the controller is adapted to:

detect which one or more of the plurality of attachment bays have a corresponding detachable module attached; and

automatically run a reconfiguration procedure adapted to reconfigure operation of the apparatus if the controller detects that one or more detachable modules have been attached or detached.

16. The apparatus of claim 12, wherein the controller is adapted to simultaneously:

provide a first set of control instructions to a first set of one or more detachable modules attached to a corresponding first set of attachment bays of the plurality of attachment bays; and

provide a second set of control instructions, different from the first set of control instructions, to a second set of one or more detachable modules, different from the first set of one or more detachable modules, attached to a corresponding second set of attachment bays of the plurality of attachment bays, different from the first set of attachment bays.

17. The apparatus of claim 12, wherein the controller is adapted to simultaneously run at least two different test methods on at least two different corresponding sets of one or more detachable modules attached to corresponding sets of one or more attachment bays of the plurality of attachment bays, wherein running a test method comprises, for the controller and each detachable module:

receiving, by the controller, the first output indicating a temperature of a medium in a vessel of the detachable module;

controlling heating of the medium based on the first output so as to maintain the medium at a target temperature;

lowering the agitator apparatus at each of a corresponding set of one or more apparatus-lowering times;

raising the agitator apparatus at each of a corresponding set of one or more apparatus-raising times; and

agitating the medium using the agitator apparatus in accordance with a set of agitation parameters at each of a corresponding set of one or more agitation times.

18. The apparatus of claim 12, wherein the controller is further adapted to:

receive, from each attached detachable module, a second output comprising agitator-parameter feedback for the agitator apparatus of the corresponding detachable module;

record, for each attached detachable module, a first value corresponding to the first output and a second value corresponding to the second output for each of a set of one or more recording times; and

output a table of the recorded times, corresponding first values, and corresponding second values for each attached detachable module.

19. The apparatus of claim 12, further comprising one or more attached detachable modules.

20. A method for scientific testing using an apparatus, wherein:

the apparatus comprises a first detachable module and a base unit;

the first detachable module comprises;

(a) a sensor;

(b) an agitator apparatus adapted to agitate a medium; and

(c) a first connection port;

the base unit comprises;

(a) a plurality of attachment bays;

(b) a user interface; and

(c) a controller communicatively connected to the user interface, wherein each of the plurality of attachment bays;

(i) is adapted to have a corresponding detachable module attach to or detach from the attachment bay; and

(ii) comprises a corresponding connection port;

the first detachable module is attached to a first attachment bay of the plurality of attachment bays; and

the first connection port of the first detachable module is connected to the corresponding connection port of the first attachment bay, wherein the method comprises;

(a) communicating, by the controller, with the first detachable module via the first connection port;

(b) receiving, by the controller, a first output from the sensor in the first detachable module; and

(c) controlling, by the controller, of the agitator apparatus in the first detachable module.

21. An apparatus usable for scientific testing, the apparatus comprising:

a user interface;

a controller communicatively connected to the user interface; and

a plurality of testing modules, each of the plurality of testing modules comprising;

a first sensor adapted to provide a first output to the controller; and

an agitator apparatus adapted to;

agitate a medium; and

be controlled by the controller, wherein the controller is adapted to simultaneously;

provide a first set of control instructions to a first set of one or more of the plurality of testing modules; and

provide a second set of control instructions, different from the first set of control instructions, to a second set of one or more of the plurality of testing modules, different from the first set of one or more of the plurality of testing modules.