Compounding Fluid Path Layout for Continuous Aseptic Dosing
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Solution Overview
Problem
Compounding devices face inefficiencies in setup time, downtime during source container replacement, and accuracy at small dispensed volumes, with challenges in maintaining aseptic conditions and preventing errors, especially in transfer set and fluid path connections.
Innovation Solution
A compounding device with a housing featuring micro and macro valve actuation devices and pumps, a junction structure for combining materials from multiple sources, and a controller for precise material transfer and mixing, along with an aesthetically pleasing and intuitive interface for improved usability and cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional compounding devices use complex transfer sets and fluid path connections, then material transfer capability is achieved, but setup time increases and error prevention becomes difficult
Solution Approach 1:
The patent removes the complex transfer set from the system entirely. The compounding device now directly receives source containers and transfers materials through integrated fluid paths, eliminating the intermediate transfer set component that caused setup complexity and errors.
Solution Approach 2:
The compounding device is designed with universal interfaces that can directly accommodate multiple types of source containers (vials, syringes, bags) without requiring different transfer sets. This multi-functional capability reduces setup time and simplifies operation.
2Productivity
If source containers are replaced during compounding, then continuous material supply is maintained, but downtime increases
Solution Approach 1:
The device allows pre-positioning of replacement source containers in ready slots before the current container is depleted. When replacement is needed, the new container is already in position and can be activated immediately, minimizing downtime during the transition.
Solution Approach 2:
The compounding process maintains continuous operation by enabling seamless switching between source containers. The system design allows the compounding to proceed without interruption or pause, as replacement containers are pre-positioned and can be activated instantly when needed.
3Manufacturing precision
If small volumes are dispensed, then precise dosing is achieved, but measurement accuracy decreases
Solution Approach 1:
The patent replaces mechanical volumetric measurement systems with a gravimetric measurement system using an integrated scale. This allows precise measurement of small volumes by weighing the material delivered, then calculating volume from weight and known density, achieving high accuracy even at small volumes.
Solution Approach 2:
The system changes the measurement parameter from volume-based to mass-based. By measuring the mass of dispensed material and using the known density relationship, the system achieves precise dosing and accurate measurement across all volume scales, particularly improving small volume accuracy.
4Ease of manufacture
If traditional interfaces are used, then device functionality is achieved, but cleaning and disinfection become difficult
Solution Approach 1:
The patent removes the transfer set interface that created cleaning difficulties. The compounding device now has direct, open access to all fluid paths and connection points, allowing easy visualization and cleaning of previously hidden or difficult-to-reach areas.
Solution Approach 2:
The device design prioritizes cleaning accessibility in critical areas by creating smooth, accessible surfaces and open geometries in fluid paths and connection points. This local optimization of surface quality and geometry enables thorough cleaning and disinfection while maintaining full device functionality.
Data Source
AI summary
An exemplary compounding system and method can include two pump heads for simultaneously drawing two different fluids from at least two separate input containers such that the at least two different fluids are mixed and distributed to an output container. The system can include a manifold that maintains separation of certain of the different fluids until after passing by a first pump and a second pump and/or additional pumps. A junction can be placed in the fluid line downstream of the first and second pumps and/or additional pumps such that all or some of the fluids are mixed prior to output to the output container. The method of using the system can include incorporating software that selects various fluids at certain times and sequences to ensure optimum efficiency and safety for the system, and can continue compounding actions even when an input supply container runs out or otherwise fails to supply a particular fluid/material. The method of use also includes connection of a transfer set to a housing in a manner that further ensures optimum efficiency and safety.