Disposable Scale Platen With Imaging for Sterile Drug Compounding

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Solution Overview

Problem

Existing scales used in the preparation of chemotherapy drugs within laminar flow hoods have a large footprint, are cumbersome, and lack safety features to protect users from cytotoxic drugs, necessitating improved usability and safety in sterile compounding processes.

Innovation Solution

A scale system with a platen that includes an image capture device, barcode scanner, and safety features such as a disposable design, absorbent material, and visual indicators to ensure sterility and user safety, along with a compact footprint to minimize space usage in laminar flow hoods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a scale is placed within a laminar flow hood for chemotherapy drug preparation, then sterile compounding can be performed, but the scale occupies valuable space within the flow hood

Engineering Contradiction:
Improvesterile compounding capabilityVSAvoidfootprint in flow hood
Core Design Contradiction:
ReliabilityVSArea of stationary object

Solution Approach 1:

The scale is divided into two main components: a compact base unit that houses the weighing mechanism and electronics, and a removable platen that can be sterilized or replaced. This segmentation allows the scale to have a minimal footprint in the flow hood while maintaining full sterile compounding functionality.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The platen is designed as a disposable component that can be discarded after use, eliminating the need for complex cleaning and sterilization processes. This reduces the space required for maintenance areas and allows for a more compact overall scale design within the flow hood.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

2Object-affected harmful factors

If protective gear is worn during chemotherapy drug preparation, then user safety is improved, but the gear becomes bulky and cumbersome

Engineering Contradiction:
Improveuser exposure to cytotoxic drugsVSAvoidusability with protective gear
Core Design Contradiction:
Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The scale automatically captures images of the compounding process and generates documentation without requiring manual intervention. The system self-monitors weight measurements, automatically logs data, and creates visual records, reducing the need for technicians to reach into hazardous areas or handle materials manually.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Manual monitoring and documentation tasks are replaced by an automated image capture system and digital weighing mechanism. The scale system automatically tracks and records all compounding steps, eliminating the need for technicians to manually record data or closely inspect materials with their hands.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Power

If traditional scales are used in flow hoods, then weighing functionality is provided, but safety features to protect users from cytotoxic drugs are lacking

Engineering Contradiction:
Improveweighing functionalityVSAvoiduser exposure to cytotoxic drugs
Core Design Contradiction:
PowerVSObject-affected harmful factors

Solution Approach 1:

The scale provides real-time visual feedback through captured images that show the current state of the compounding process. The system continuously monitors weight measurements and provides immediate feedback on whether the correct amount of medication has been dispensed, allowing technicians to verify proper dosing without direct exposure to the medication.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

An image capture device serves as an intermediary between the technician and the cytotoxic drugs. The device captures visual information about the medication and compounding process, allowing technicians to monitor and verify the process remotely through images displayed on a screen, thereby minimizing direct exposure to hazardous materials.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Measurement precision

If comprehensive documentation is captured during compounding, then accuracy is improved, but user input requirements increase

Engineering Contradiction:
Improvecompounding accuracyVSAvoiduser input requirements
Core Design Contradiction:
Measurement precisionVSEase of operation

Solution Approach 1:

The system automatically captures all necessary documentation including images of the compounding process, weight measurements, and procedural steps without requiring manual data entry. The scale self-documented the entire compounding process by continuously capturing images and logging weight data, eliminating the need for technicians to manually record information.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Manual documentation tasks are replaced by an automated image capture and data logging system. The scale automatically records all weight measurements and captures visual documentation of the compounding process, substituting manual writing and recording with automated digital capture and storage systems.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP4717246A2Enhanced platen for pharmaceutical compounding
Publication Date: 2026.04.01 BECTON DICKINSON & CO
  • EP4717246A2 patent drawingFigure 1
  • EP4717246A2 patent drawingFigure 2
  • EP4717246A2 patent drawingFigure 3

AI summary

A system for preparing and administering a prescribed fluidic pharmaceutical compound, such as a chemotherapy compound, includes a scale having a platen. The scale is in communication with a user display for displaying an output of the scale. An image capture device having a field of view for capturing at least one image of an object placed on the platen is provided in communication with the user display for displaying the captured image. The platen may include a visual identifier for identifying a portion of the field of view of the image capture device. The platen may also include a tackifier or absorbent material. The platen may be formed of a light-transmissible material.