Patent Description:
Washing devices of a central services department (CSD) of a hospital are generally connected to chemical containers located next to the washing devices or in another room that is near the washing devices. Due to safety standards, these chemical containers are located on retention basins.

When a cycle of a washing device requires an injection of chemicals from a container, a dosing system of the washing device transfers the chemicals from the container to the washing device. The dosing system can either be embedded in the washing device or positioned outside the washing device. The dosing system may include a variety of components, such as, but not limited to, perylstatic pumps, piping, and flow sensors.

The dosing system is designed to guarantee that the volume of the chemicals injected into the washing device corresponds to the volume of chemicals required for the specific operation inside the washing device. Conventionally, this volume is verified through a variety of methods. In one example, pumps in charge of pumping chemicals from the container to the washing device are calibrated so that a given amount of pump operation time corresponds with a specific volume of chemicals that is transferred to the washing device. In another example, a flow sensor placed inside the piping of the dosing system detects several pulses when the chemicals are being transferred through the piping. Depending on the calibration of the transfer system, a number of pulses detected corresponds to a given volume of chemical delivered to the washing device. Specifically, in the cleaning of medical devices, it is common to find dosing systems employing both of the above-referenced examples to confirm the volume of the chemicals delivered to the washing device for regulatory purposes.

However, the ultra-concentrated chemicals transported to the washing device are in direct contact with the flow sensors disposed within the piping, thereby subjecting the flow sensors to damage.

Further, the pressure on CSDs to respect regulatory standards increases on a consistent basis. Time-based verification and verification through flow sensors provide no method by which control of chemical delivery can be verified visually. As a result, it has become necessary for CSDs to even further verify the amount of chemicals transferred into the washing device through visual and primitive means, such as, for example, drawing a line on a container and routinely checking the container to see if the amount of chemicals in the container has lessened since the line was drawn. This requires extra resources and can make the volume confirmation susceptible to human error. <CIT> discloses a dispenser for dispensing an amount of concentrate using a diluent to form a use solution, comprising a container, a mounting panel, a support bracket fastened to the mounting panel, a load cell supported by the support bracket, the load cell configured to measure a weight of the container, being placed on the load cell, and a controller, having a keyboard and a display, connected to the load cell.

The present invention provides an improved system for determining the volume of a liquid within a container. Specifically, the present invention addresses situations in which accurate determination and verification of an amount of chemicals in a container are required for regulatory purposes. The present invention addressed such situations in a way to eliminate manual confirmations of volume and avoid the use of instrumentation in a way that require exposure of the instrumentation to ultra-concentrated chemicals.

In accordance with one embodiment of the present invention, there is provided a system for detecting and indicating variations in volume of chemicals in a container. The system includes a retention basin configured to retain the container. The retention basin includes a pressure cell, a basin input interfaces, and a basin controller. The pressure cell is configured to measure a weight of the container. The container is placed on the pressure cell. The basin input interface is configured to allow specification of properties of the chemicals in the container. The basin controller is configured to calculate the volume of the chemicals in the container based on the measured weight of the container and the specified properties of the chemicals in the container. The basin controller includes a basin display configured to display the calculated volume of the chemicals in the container.

In accordance with another embodiment of the present invention, there is provided a system for detecting and indicating variations in volume of chemicals in a container. The system includes a retention basin and a system controller. The retention basin is configured to retain the container. The retention basin includes a pressure cell, a basin communication interface, and a basin display. The pressure cell is configured to measure a weight of the container, the container being placed on the pressure cell. The basin communication interface is configured to wirelessly communicate the measured weight of the container and receive a calculation of the volume of the chemicals in the container. The basin display is configured to display the calculated volume of the chemicals in the container. The system controller includes a central processing unit, a controller communication interface, a controller input interface, and a controller display. The central processing unit is configured to calculate the volume of the chemicals in the container based on the measured weight of the container and properties of the chemicals in the container. The controller communication interface is configured to wirelessly communicate with the basin communication interface to receive, from the basin communication interface, the measured weight of the container and send, to the basin communication interface, the calculated volume of the chemicals in the container for display by the basin display. The controller display is configured to display the calculated volume of the chemicals in the container. The controller input interface is further configured to allow management of the controller display.

An advantage of the present invention is that wireless communication can be used to transfer data from the retention basin on which the container is positioned to a washing device or a controller. This makes chemical supply adjustments easier and enables remote monitoring of the volume of chemicals in the container.

Another advantage of the present invention is that a pressure cell can be used in a retention basin mounted to a wall. This enables easier maintenance and administration of the container, the retention basin on which the container sits, and the components of the retention basin.

An additional advantage of the present invention is that, in at least one embodiment, a retention basin includes one or more basin displays that correspond with measurements taken by a respective pressure cells. This improves the methods by which local monitoring on container volume can be performed.

These and other advantages will become apparent from the following description of illustrated embodiments taken together with the accompanying drawings and the appended claims.

The invention may take physical form in certain parts and arrangement of parts, a preferred embodiment of which will be described in detail in the specification and illustrated in the accompanying drawings which form a part hereof, and wherein:.

Referring now to the drawings wherein the showings are for the purposes of illustrating an embodiment of the invention only and not for the purposes of limiting same, <FIG> illustrate various examples of first and second embodiments of detergent supply system <NUM>. Among various different functions, system <NUM> detects and indicates variations in volume of chemicals in one or more containers <NUM>. Types of containers <NUM> may include, but are not limited to, plastic jugs or other plastic and portable chemical media storage.

In a first embodiment, system <NUM> includes retention basin <NUM>. Retention basin <NUM> is designed to retain container <NUM>. Retention basin <NUM> may be plastic or another lightweight material, but is not limited thereto. Retention basin <NUM> may be configured to retain various different types or brands of containers <NUM>. Retention basin <NUM> may also be configured to exclusive retain a specific type or brand or container <NUM>.

Retention basin <NUM> includes pressure cell <NUM>, basin input interface <NUM>, and basin controller <NUM>. Pressure cell <NUM> is designed to measure a weight of container <NUM>, which is placed on pressure cell <NUM> when retained by retention basin <NUM>. Retention basin <NUM> is further used to protect pressure cell <NUM> from being overloaded by the weight of container <NUM>. Basin input interface <NUM> is liquid-proof and is used to allow a user to specify the properties of the chemicals in container <NUM>. Basin controller <NUM> is also liquid-proof and is used to calculate the volume of the chemicals in container <NUM> based on the measured weight of container <NUM> and the specified properties of the chemicals in container <NUM>. Basin controller <NUM> includes basin display <NUM>, which is also liquid-proof and used to display the calculated volume of the chemicals in container <NUM>. Basin display <NUM> may be electronic, such as an LCD or LED display, or mechanical, such as a dial reading.

It is noted that the electronic devices of retention basin <NUM> are powered through power supply <NUM>. Power supply <NUM> is illustrated in <FIG> as being a battery. Power supply <NUM> is illustrated in <FIG> as requiring an AC voltage source. However, embodiments described herein are not limited to either type of power supply.

In one example, system <NUM> may further include washing device <NUM> and pick-up tubes <NUM>. Washing device <NUM> is used to apply the chemicals in container <NUM> to contents disposed in washing device <NUM>, such as, but not limited to, medical devices or medical instruments. Washing device <NUM> may include washing device communication interface <NUM>. Washing device communication interface <NUM> is used to wirelessly communicate via basin/washer communication connection <NUM> with retention basin <NUM>.

In the above-referenced example, pick-up tubes <NUM> are used to transfer the chemicals in container <NUM> to washing device <NUM>. Retention basin <NUM> may further include basin communication interface <NUM>. Basin communication interface <NUM> is used to wirelessly communicate with washing device communication interface <NUM> of washing device <NUM> via basin/washer communication connection <NUM> regarding the calculated volume of the chemicals in container <NUM>, withdrawal of the chemicals in container <NUM> through pick-up tubes <NUM>, and application of the withdrawn chemicals to the contents disposed in washing device <NUM>. Basin communication interface <NUM> may include, but is not limited to, a wireless modem or a wireless router.

In another example, pick-up tubes <NUM> optionally include one or more level sensors <NUM> positioned therein. Level sensors <NUM> are used to detect an amount of the chemicals remaining in container <NUM> and communicate the detected amount to basin controller <NUM>.

It is noted that level sensors <NUM> are not required for operation of system <NUM>, as use of level sensors <NUM> in applications in which system <NUM> is employed still possesses the drawbacks previously mentioned with respect to conventional art. System <NUM> is designed to provide accurate volume levels without any assistance from level sensors <NUM> or the like. However, in view of the aforementioned increase in regulatory accountability, level sensors <NUM> may provide an extra sense of security and confirmation for the CSDs. Level sensors <NUM> may be powered by power supply <NUM> or other means independent from retention basin <NUM>.

In an additional example, system <NUM> may include mounting bracket <NUM> mounted to wall <NUM>. Mounting bracket <NUM> may include hook <NUM> that is used to secure retention basin <NUM> to mounting bracket <NUM>. It is noted that the embodiments disclosed herein are not limited to retention basin <NUM> being mounted to wall <NUM>. For example, as illustrated in <FIG>, retention basin <NUM> may be positioned on support surface <NUM>. An example of support surface <NUM> may include, but is not limited to, a floor or a table.

In a further example, basin input interface <NUM> is further used to allow a user to specify a desired operation of basin display <NUM>. Basin controller <NUM> is used to control basin display <NUM> according to the desired operation of basin display <NUM> specified by the user through basin input interface <NUM>. For example, in addition to allowing a user to specify the properties of the chemicals in container <NUM>, basin input interface <NUM> may allow the user to switch between Imperial and Metric volume units in an electronic or a mechanical implementation of basin display <NUM>.

In another example, system <NUM> may further include system controller <NUM>. System controller <NUM> is powered by controller power supply <NUM> using any means known to those having ordinary skill in the art. System controller <NUM> is used to remotely monitor the calculated volume of the chemicals in container <NUM>. System controller <NUM> may include controller communication interface <NUM> and controller display <NUM>. Controller communication interface <NUM> is used to wirelessly communicate with basin communication interface <NUM> of retention basin <NUM> via basin/controller communication connection <NUM> to acquire the calculated volume of the chemicals in container <NUM>. Controller communication interface <NUM> may include, but is not limited to, a wireless modem or a wireless router. Controller display <NUM> is used to display the calculated volume of the chemicals in container <NUM> acquired by controller communication interface <NUM>. It is anticipated that controller display <NUM> may be an electronic display, but controller display <NUM> is not limited thereto.

In this example, system controller <NUM> may further include controller input interface <NUM> and central processing unit <NUM>. Controller input interface <NUM> is used to allow a user to specify a desired operation of controller display <NUM>. For example, controller input interface <NUM> may allow the user to switch between Imperial and Metric volume units. Central processing unit <NUM> is used to control controller display <NUM> according to the desired operation specified by the user through controller input interface <NUM>. Controller input interface <NUM> may resemble any input device known to one having ordinary skill in the art, including, but not limited to, a mechanical or capacitive touch pad, a keyboard, or a video display input device.

It is noted that basin input interface <NUM> and controller input interface <NUM> are not limited to specific forms and orientations. For example, basin input interface <NUM> is illustrated in <FIG> and <FIG> as being a single push button. However, multiple inputs may conceivably integrated into the button illustrated in <FIG> and <FIG>. Further, basin input interface <NUM> and controller input interface <NUM> may have the capability of being remotely controlled through wired means or wireless means. Wired means of remote control may include, but is not limited to, corded input devices. Wireless means of remote control may include, but is not limited to, infrared communication between an input device and interfaces <NUM> and <NUM> or wireless communication between an input device, e.g. a mobile phone, and interfaces <NUM> and <NUM>.

In another example, container <NUM> may be one of many containers retained by retention basin <NUM>. Pressure cell <NUM> of retention basin <NUM> may be one of many pressure cells <NUM> of retention basin <NUM>. In such cases, pressure cells <NUM> are used to respectively measure weights of containers <NUM> placed thereon. Moreover, basin controller <NUM> is used to calculate a volume of chemicals for each of containers <NUM> based on the measured weight thereof.

In the example above, basin input interface <NUM> is further used to allow a user to specify properties of chemicals in each of containers <NUM>. In addition, in lieu of basin displays <NUM> for each pressure cell <NUM>, as will be described below, centralized basin display <NUM> can be used to selectively display the volumes related to each of containers <NUM> on pressure cells <NUM> in retention basin <NUM>. In such a case, a single basin input interface <NUM> is further used to allow selection by a user of the calculated volume of the chemicals in one of containers <NUM> to be displayed by centralized basin display <NUM>. It is anticipated that centralized basin display <NUM> may be an electronic display, but centralized basin display <NUM> is not limited thereto.

In another aspect of the example above, which was referred to above, basin input interface <NUM> may be one of a plurality of basin input interfaces <NUM>. Each of basin input interfaces <NUM> correspond with one of pressure cells <NUM>. Further, basin controller <NUM> that has basin display <NUM> may be one of many basin controllers <NUM>. Each of basin controllers <NUM> may include basin displays <NUM> and correspond with one of pressure cells <NUM>. As is illustrated in <FIG>, it is also contemplated that a similar configuration could be accomplished through multiple applications of separate retention basins <NUM>.

In the second embodiment, which was referred to above, system <NUM> may include retention basin <NUM> and system controller <NUM>. Retention basin <NUM> may be used to retain container <NUM>. In the second embodiment, retention basin <NUM> may include pressure cell <NUM>, basin communication interface <NUM>, and basin display <NUM>. Pressure cell <NUM> is used to measure a weight of container <NUM> that is placed thereon. Basin communication interface <NUM> is used to wirelessly communicate, via basin/controller communication connection <NUM>, the measured weight of container <NUM> and receive a calculation of the volume of the chemicals in container <NUM>. Basin communication interface <NUM> may include, but is not limited to, a wireless modem or a wireless router. Basin display <NUM> is used to display the calculated volume of the chemicals in container <NUM>. Again, basin display <NUM> may be electronic, such as an LCD or LED display, or mechanical, such as a dial reading.

In addition, system controller <NUM> is powered by controller power supply <NUM> using any means known to those having ordinary skill in the art. System controller <NUM> further includes central processing unit <NUM>, controller communication interface <NUM>, controller input interface <NUM>, and controller display <NUM>. Central processing unit <NUM> is used to calculate the volume of the chemicals in container <NUM> based on the measured weight of container <NUM> and properties of the chemicals in container <NUM>. Controller communication interface <NUM> is used to wirelessly communicate with basin communication interface <NUM> via basin/controller communication connection <NUM> to receive, from basin communication interface <NUM>, the measured weight of container <NUM> and send, to basin communication interface <NUM>, the calculated volume of the chemicals in container <NUM> for display by basin display <NUM>. Controller communication interface <NUM> may include, but is not limited to, a wireless modem or a wireless router. Controller input interface <NUM> is used to allow a user to specify the properties of the chemicals in container <NUM>. Controller display <NUM> is used to display the calculated volume of the chemicals in the container <NUM>. It is anticipated that controller display <NUM> may be an electronic display, but controller display <NUM> is not limited thereto. Controller input interface <NUM> is further used to allow a user to manage controller display <NUM>.

In an example of the second embodiment, retention basin <NUM> may further include basin input interface <NUM> that is used to allow a user to specify the properties of the chemicals in container <NUM> to system controller <NUM> wirelessly between basin and controller communication interfaces <NUM> and <NUM> via basin/controller communication connection <NUM>. Container <NUM> may be one of many containers <NUM> retained by retention basin <NUM>. Pressure cell <NUM> may be one of many pressure cells <NUM>. Pressure cells <NUM> are used to respectively measure weights of containers <NUM> placed thereon. Central processing unit <NUM> is further used to calculate a volume of chemicals for each of containers <NUM> based on the measure weight thereof.

In one aspect of the above-referenced example, basin and controller input interfaces <NUM> and <NUM> are further used to allow a user to specify properties of chemicals in each of containers <NUM>. Basin display <NUM> is further used to display the calculated volumes of the chemicals in each of containers <NUM>. Basin input interface <NUM> is further used to allow a user to select the calculated volume of the chemicals in one of containers <NUM> to be displayed by basin display <NUM>.

In another aspect of the above-referenced example, basin input interface <NUM> may be one of many basin input interfaces <NUM>. Each of basin input interfaces <NUM> may correspond with one of pressure cells <NUM>. Basin display <NUM> may be one of many basin displays <NUM>. Each of basin displays <NUM> may correspond with one of pressure cells <NUM> and a corresponding one of basin input interfaces <NUM>.

In another example of the second embodiment, system <NUM> may further include washing device <NUM> and pick-up tubes <NUM>. Washing device <NUM> is used to apply the chemicals in container <NUM> to contents disposed in washing device <NUM>, such as, but not limited to, medical devices or medical instruments. Washing device <NUM> may include washing device communication interface <NUM>. Washing device communication interface <NUM> is used to wirelessly communicate via basin/washer communication connection <NUM> with basin communication interface <NUM>.

In the above-referenced example, pick-up tubes <NUM> are used to transfer the chemicals in container <NUM> to washing device <NUM>. Also, basin communication interface <NUM> is used to wirelessly communicate with washing device communication interface <NUM> of washing device <NUM> via basin/washer communication connection <NUM> regarding the calculated volume of the chemicals in container <NUM>, withdrawal of the chemicals in container <NUM> through pick-up tubes <NUM>, and application of the withdrawn chemicals to the contents disposed in washing device <NUM>.

In an additional example of the second embodiment, pick-up tubes <NUM> optionally include one or more level sensors <NUM> positioned therein. Level sensors <NUM> are used to detect an amount of the chemicals remaining in container <NUM> and communicate the detected amount to system controller <NUM> wirelessly through basin/controller communication connection <NUM> between washer c <NUM> and basin communication interface <NUM>.

In a further example of the second embodiment, central processing unit <NUM> is further used to establish basin/controller communication connection <NUM> between controller communication interface <NUM> and basin communication interface <NUM> to enable controller communication interface <NUM> to wirelessly communicate with basin communication interface <NUM>.

As noted above and illustrated in the drawings, system <NUM> may be embodied in several different ways. For example, system <NUM> could largely consist of retention basin <NUM>. In such a case, retention basin <NUM> would not include basin communication interface <NUM> or would not use basin communication interface <NUM> if included therein. In addition, many features of the first embodiment can be easily and harmlessly incorporated into the second embodiment. These features may include, but are not limited, centralized basin display <NUM>.

In another example, when both retention basin <NUM> and system controller <NUM> are implemented in system <NUM>, software updates to basin controller <NUM> could be transmitted wirelessly from controller communication interface <NUM> to basin communication interface <NUM> over basin/controller communication connection <NUM>. In addition, system controller <NUM> could be hardware component of a computer system or a software component administered by an overarching central processing unit. Moreover, system controller <NUM> could be supplied with data storage means in which data regarding the volumes of container <NUM> could be recorded. Various data ports, such as USB or USB-C compatible ports (not shown), could also be integrated into system controller <NUM>, retention basin <NUM>, and washing device <NUM> for wired communication therebetween or connection to a printing device (not shown) for paper printing of recorded data or other external data recording devices.

System <NUM> can be designed to operate in many different ways. One example of an initiation of such a basic operation would involve an initial reset of basin controller <NUM> and basin display <NUM> through operation of basin input interface <NUM>. Basin input interface <NUM> would then be used to specific the type and concentration of chemical being housed within container <NUM>. This may include the specification of a density of the chemical in container <NUM>.

After this, container <NUM> could be placed on retention basin <NUM> and, more specifically, on pressure cell <NUM>. Pick-up tubes <NUM> could then be placed directly into container <NUM> or into container <NUM> via shelf mount (not shown) that would assist pick-up tubes <NUM> in avoiding contact with container <NUM>. After this, a user could again operate basin input interface <NUM> to indicate the starting volume of the chemicals in container <NUM> or, if system <NUM> is programmed to do so, the type of container <NUM> placed on pressure cell <NUM>, thereby assuming such container <NUM> would be full. After operation of washing device <NUM> begins, if washing device <NUM> uses pick-up tubes <NUM> to remove chemical from container <NUM>, basin display <NUM> would display the volume of container <NUM> when full minus the volume of chemicals removed from container <NUM>.

Claim 1:
A system for detecting and indicating variations in volume of chemicals in a container (<NUM>), the system comprising:
a retention basin (<NUM>) configured to retain the container, the retention basin comprising:
a pressure cell (<NUM>) configured to measure a weight of the container, the container being placed on the pressure cell;
a basin input interface (<NUM>); and
a basin controller (<NUM>);
a washing device (<NUM>) configured to apply the chemicals in the container to contents disposed in the washing device, the washing device comprising a washing device communication interface (<NUM>) configured to wirelessly communicate with the retention basin, wherein the retention basin further comprises a basin communication interface (<NUM>) configured to wirelessly communicate with the washing device via the washing device communication interface; and
pick-up tubes (<NUM>) configured to transfer the chemicals in the container to the washing device;
characterized in that
the basin input interface is configured to allow to a user specification of properties of the
chemicals in the container;
the basin controller is configured to calculate the volume of the chemicals in the container based on the measured weight of the container and the specified properties of the chemicals in the container, the basin controller comprising a basin display (<NUM>) configured to display the calculated volume of the chemicals in the container; and
the pick-up tubes (<NUM>) comprise one or more level sensors (<NUM>) positioned therein, the level sensors being configured to detect an amount of the chemicals remaining in the container and communicate the detected amount to the basin controller.