Modular Syringe Shield for Radiopharmaceuticals
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Solution Overview
Problem
The transportation and handling of radiopharmaceuticals pose significant radiation hazards due to the lack of adequate shielding in conventional containers, leading to multiple opportunities for exposure during shipping, storage, and administration, particularly for high-energy isotopes like Ga-68 and Cu-64, which lack viable shipping options.
Innovation Solution
A modular syringe shield with bayonet attachment and gasket mechanisms provides comprehensive shielding for syringes containing radiopharmaceuticals, incorporating tungsten and anodized aluminum for effective radiation protection, and can be adapted for various syringe sizes and isotopes, including high-energy agents, and is designed for compliance with regulatory standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional containers (plastic bottles, glass vials) are used for radiopharmaceuticals, then the containers are simple and easy to manufacture, but they provide no radiation shielding and create radiation hazards during transport and handling
Solution Approach 1:
The patent implements a nested container structure where the primary radiopharmaceutical container (vial or syringe) is placed inside a secondary shielded container. The inner container holds the radiopharmaceutical while the outer container provides radiation shielding through lead or tungsten lining. This nested approach allows the simple inner container to maintain its ease of manufacture while the outer container provides the necessary radiation protection, resolving the contradiction between container simplicity and radiation shielding effectiveness.
Solution Approach 2:
The patent introduces a shielded container as an intermediary between the radiopharmaceutical and the external environment. This intermediary container, lined with radiation-shielding material, mediates the interaction between the radiopharmaceutical and handlers/transport conditions, absorbing or blocking radiation while allowing the radiopharmaceutical to remain in its simple original container. This resolves the contradiction by providing radiation protection without complicating the primary container design.
2Object-affected harmful factors
If radioactivity-shielding containers (pigs) are used for transport, then radiation shielding is provided, but the containers are heavy and complex
Solution Approach 1:
The patent applies radiation shielding material (lead or tungsten) only to the specific areas where radiation protection is most needed - the walls and lid of the shielded container. Rather than making the entire container uniformly heavy, the shielding is localized to the portions that require radiation protection, reducing overall weight while maintaining effective radiation shielding. This resolves the contradiction between providing radiation shielding and minimizing container weight.
Solution Approach 2:
The patent uses composite construction combining lightweight materials (plastic or aluminum) for the container structure with radiation-shielding materials (lead or tungsten) lined within. This composite approach allows the container to maintain structural integrity and lightweight properties while incorporating radiation shielding functionality, resolving the contradiction between weight and radiation protection.
3Ease of operation
If conventional containers are used, then the containers are lightweight and easy to handle, but they lack radiation shielding and create multiple exposure opportunities during handling
Solution Approach 1:
The nested container design allows the inner radiopharmaceutical container to remain simple and easy to handle while being placed inside the outer shielded container. The inner container maintains its original ease of operation characteristics, while the outer container provides radiation protection during transport and storage, resolving the contradiction between handling convenience and radiation protection.
Solution Approach 2:
The shielded container acts as an intermediary that provides radiation protection during transport and storage phases, while the inner radiopharmaceutical container maintains ease of operation during administration. This intermediary approach allows different operational requirements to be met at different stages, resolving the contradiction between handling convenience and radiation exposure risk.
4Object-affected harmful factors
If shielded containers are designed for high-energy isotopes (Ga-68, Cu-64), then adequate radiation protection is provided, but the container complexity and weight increase significantly
Solution Approach 1:
The patent uses composite materials combining lightweight structural components with radiation-shielding lining to create containers suitable for high-energy isotopes. The composite construction provides the necessary shielding against high-energy radiation while maintaining reasonable weight and complexity levels, resolving the contradiction between high-energy radiation protection and container design simplicity.
Solution Approach 2:
The patent applies enhanced radiation shielding specifically to the areas most exposed to high-energy radiation during transport and handling. By localizing the shielding to critical areas rather than uniformly throughout the container, the design provides adequate protection against high-energy isotopes while minimizing overall container complexity and weight.
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 syringe shield significantly reduces radiation exposure during transport and handling by providing uniform shielding, ensuring compliance with regulatory standards for shipping high-energy isotopes like Ga-68 and Cu-64, and enabling safe administration of radiopharmaceuticals while accommodating different syringe sizes and volumes.
Implementation Method 1
the shield significantly reduces radiation exposure during transport and handling by providing uniform shielding
Implementation Method 2
A syringe shield with bayonet attachment and gasket mechanisms provides comprehensive shielding for syringes containing radiopharmaceuticals
Data Source
AI summary
A shield for a syringe containing biohazardous material includes an elongate body comprising a compartment extending longitudinally therethrough from a body cold end to a body hot end, the compartment dimensioned to receive a syringe barrel; a cold end cover dimensioned to receive and enclose a syringe plunger extending beyond the body cold end, the cold end cover attachable at the body cold end for enclosing the compartment and the syringe plunger at the body cold end thereby to shieldingly contain the biohazardous material in the syringe at the body cold end; and a hot end cover attachable at the body hot end for at least enclosing the compartment at the body hot end thereby to shieldingly contain the biohazardous material in the syringe at the body hot end.