Modular Radiosynthesis System with Segmented Hot and Cold Modules
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Solution Overview
Problem
Current radiosynthesis systems for positron emission tomography (PET) face challenges in safety, efficiency, and flexibility due to the integration of radiation-handling and electronic components, leading to radiation exposure risks for operators and limited capability in producing a wide range of PET probes efficiently.
Innovation Solution
A modular system with separated 'hot' and 'cold' components, where 'hot' components handling radiation are shielded and 'cold' components hosting electronics and reagents are outside the shielding, connected via cables and tubing to minimize radiation exposure and allow for flexible and efficient production of PET probes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If radiation-handling components and electronic components are integrated in one system, then device complexity is reduced, but operator exposure to radiation increases
Solution Approach 1:
The system is divided into two separate modules: a radiation-shielded module containing radiation-handling components (reaction chamber, radiation source) and a control module containing electronic components (controller, display, input devices). This segmentation allows the system to maintain functional integration while physically isolating radiation sources from operators and electronic sensitive components.
2Object-affected harmful factors
If all components are placed inside radiation shielding, then radiation protection is improved, but access to electronics and reagents becomes difficult
Solution Approach 1:
By separating the system into shielded and unshielded modules, operators can easily access and operate electronic components in the control module without radiation protection barriers, while the shielded module maintains radiation protection for enclosed components.
Solution Approach 2:
The system employs automated fluid delivery systems and remote operation capabilities that act as intermediaries, allowing operators to control the radiation-handling processes from the unshielded control module without direct physical access to the shielded radiation components.
3Adaptability or versatility
If reagents are replenished after each run, then synthesis flexibility is improved, but operator radiation exposure increases and production efficiency decreases
Solution Approach 1:
The system is designed with pre-loaded reagent reservoirs and automated delivery mechanisms that are prepared in advance in the unshielded control module. This preliminary preparation allows multiple synthesis runs to be executed sequentially without requiring operator intervention or reagent replenishment between runs, thereby maintaining flexibility while improving productivity.
4Volume of moving object
If electronic equipment is placed inside the radiation shield, then system compactness is improved, but sensitive equipment is exposed to radiation damage
Solution Approach 1:
The system separates electronic equipment into the unshielded control module, protecting sensitive components from radiation damage. The shielded module contains only radiation-handling components, maintaining a compact footprint for the radiation-sensitive portion while allowing the control electronics to be positioned separately.
Data Source
AI summary
Macro- and microfluidic devices and related technologies, and chemical processes using such devices. More specifically, the devices may be used for a fully automated synthesis of radioactive compounds for imaging, such as by positron emission tomography (PET), in an efficient, compact and safe to the operator manner. In particular, embodiments of the present invention relate to an automated, multi-run, microfluidic instrument for the multi-step synthesis of radiopharmaceuticals, such as PET probes, comprising a remote shielded mini-cell containing radiation-handing components.