Bone Cement Mixing System with Sealed Fume Containment
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Solution Overview
Problem
Current bone cement mixing techniques expose medical staff to toxic fumes generated during the integration of monomer and powder components, as they involve manual handling and lack effective containment mechanisms.
Innovation Solution
A device and method that encloses the vial-breaking process within a sealed chamber, utilizing an elastomeric seal and filter to contain fumes, allowing for the controlled mixing and dispensing of bone cement while preventing the escape of toxic vapors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If manual vial breaking and pouring techniques are used, then the mixing process is simple and quick, but toxic fumes are generated and exposed to medical staff
Solution Approach 1:
The mixing system is divided into separate functional modules: a vial holder for containing the monomer vial, a holder chamber for the mixing process, a vial-breaking device for controlled vial rupture, and a filter for fume filtration. This segmentation allows each component to perform its specific function while containing harmful fumes within the enclosed chamber.
Solution Approach 2:
A filter is introduced as an intermediary element between the vial-breaking device and the external environment. The filter captures and retains toxic fumes generated during the mixing process, preventing their release into the surrounding environment while allowing the mixing operation to proceed normally.
2Object-affected harmful factors
If the vial is broken manually outside the chamber, then the mixing process is straightforward, but fumes escape into the ambient environment
Solution Approach 1:
The vial holder is designed to be inserted into and nested within the holder chamber. The vial holder contains the monomer vial, which is then broken by the vial-breaking device inside the enclosed chamber. This nested arrangement ensures that the entire breaking and mixing process occurs within the sealed environment, containing fumes while maintaining operational simplicity.
3Object-affected harmful factors
If a sealed chamber is used to contain fumes, then medical staff exposure is reduced, but the device structure becomes more complex
Solution Approach 1:
Multiple functional elements are merged into a single integrated assembly: the vial holder, holder chamber, vial-breaking device, and filter are combined into one unified mixing system. This merging reduces the number of separate components and connections required, simplifying the overall structure while maintaining effective fume containment through the sealed chamber design.
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 solution effectively reduces exposure to toxic fumes during bone cement preparation, ensuring a safer working environment for medical staff by containing fumes within the mixing and dispensing system.
Implementation Method 1
an elastomeric seal positioned about the vial-breaking device... advancement of the vial holder deforms the elastomeric seal from a first diameter that is smaller than the diameter of the holder chamber to a second diameter that is larger than the first diameter and forms a seal against an inside wall of the holder chamber
Implementation Method 2
a filter disposed within the holder chamber
Data Source
AI summary
A system for bone cement includes a vial holder configured for receiving a vial and including a holding structure for maintaining the vial in the vial holder. The vial includes a monomer component for bone cement. A holder chamber is configured to receive and secure the vial holder. The vial holder is advanced toward a vial-breaking device for breaking the vial and releasing its contents into the holder chamber past the elastomeric seal. Once the vial holder is advanced further the elastomeric seal is deformed to form a seal and prevent fumes produced from escaping from the device.