Medication Compounding Cartridges for Precise Dosing and Clean Transfer
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Solution Overview
Problem
Existing medication compounding processes, whether manual or robotic, face challenges in accurately and efficiently combining medications and diluents without cross-contamination, particularly in creating compounded medications for individual patients.
Innovation Solution
A system comprising a transfer module with cartridges, a medication module, a diluent module, and a filling module, which includes pumps and ports to accurately transfer and combine medications and diluents into compounded medication containers, ensuring alignment and separation to prevent cross-contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual compounding is used, then ease of operation is improved, but productivity and measurement precision deteriorate
Solution Approach 1:
The system is divided into separate functional modules: a medication module with multiple medication containers, a diluent module with diluent containers, and a filling module. Each module can be independently operated and maintained, allowing pharmacists to efficiently compound multiple medications without manual reconfiguration while maintaining ease of operation.
Solution Approach 2:
The robotic compounding system performs automated functions including selecting medication containers, transferring medications via pumps, adding diluents, and filling compounded medication containers. The system self-manages the compounding process without requiring continuous manual intervention, thereby improving productivity while maintaining measurement precision through automated controls.
2Productivity
If robotic compounding is used, then productivity is improved, but device complexity increases
Solution Approach 1:
The robotic compounding system is divided into separate functional modules: a medication module with multiple medication containers, a diluent module with diluent containers, and a filling module. Each module can be independently operated and maintained, allowing pharmacists to efficiently compound multiple medications without manual reconfiguration while maintaining ease of operation.
Solution Approach 2:
The system uses universal access devices that can interface with different types of medication containers and diluent containers. The pumps and transfer mechanisms are designed to handle various fluid types and container configurations, reducing the need for multiple specialized components and thereby managing device complexity while maintaining high productivity.
3Manufacturing precision
If medications are transferred using pumps, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The system introduces an intermediary transfer mechanism using pumps and transfer cartridges that mediate between the medication containers and the filling module. This intermediary system enables precise control of medication transfer volumes and rates, ensuring accurate dosing while consolidating complex transfer operations into standardized components that can be managed through software control.
Solution Approach 2:
The system incorporates feedback mechanisms through sensors and control systems that monitor the transfer process in real-time. The pumps are controlled based on feedback from sensors that detect volume transferred, pressure changes, and container status, ensuring precise medication transfer while allowing for automatic adjustments that reduce the need for overly complex mechanical systems.
4Productivity
If multiple medication containers are accessed simultaneously, then productivity is improved, but reliability deteriorates due to cross-contamination risk
Solution Approach 1:
The system uses separate access devices for different medication containers, with each access device dedicated to specific containers or sterilizable between uses. The modular design allows for independent cleaning and sterilization of each access device, maintaining reliability while enabling simultaneous access to multiple medications through parallel processing in different modules.
Solution Approach 2:
The system employs disposable access devices or transfer cartridges that are discarded after a single use or after sterilization. This eliminates the risk of cross-contamination between different medication containers while maintaining high productivity, as the disposable components can be quickly replaced without requiring complex cleaning protocols or risking contamination from reusable components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enables precise and efficient compounding of medications, reducing the risk of contamination and ensuring accurate dosing for individual patients by using modular and rotatable components for alignment and transfer.
Implementation Method 1
a first pump; a medication module having a plurality of medication containers, wherein the access device is configured to access at least one medication container and draw medication from the medication container
Implementation Method 2
a second pump; a diluent module having one or more diluent containers having a diluent therein, the diluent module comprising a second pump
Data Source
AI summary
A medication compounding system is described that is capable of receiving one or more medications and diluents and that includes an array of moveable transfer cartridges to access a medication container and to transfer medication. The transferred medication may be joined with a diluent to form a compounded medication. The resulting compounded medication may then be directed to a filling port where a compounded medication container may be coupled. A second medication container may align with a second transfer cartridge to transfer a second medication. Because the device may comprise one or more medications and diluents, a series of compounded medications may be created using an individual transfer cartridge for each medication.