Bone Cement Viscosity Control via Thermal Polymerization
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Solution Overview
Problem
Current bone cement systems for treating vertebral compression fractures lack control over cement viscosity, leading to complications such as leakage and extravasation, which can result in serious health issues like compression of adjacent structures and pulmonary embolism.
Innovation Solution
A system comprising a bone cement kit with data transmitters and receivers, temperature sensors, and an energy emitter to control the viscosity of the cement in real-time, allowing for on-demand adjustment of cement properties during injection to prevent extravasation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If bone cement is injected under high pressure to treat vertebral compression fractures, then the cement can be forced into the cancellous bone, but the cement may leak or extravasate into adjacent structures
Solution Approach 1:
The patent applies dynamics by making the cement viscosity changeable over time through temperature control. The system dynamically adjusts cement viscosity from low (for easy injection) to high (for leakage prevention) by controlling the polymerization reaction rate, allowing the same cement to adapt to different operational requirements during injection
Solution Approach 2:
The patent changes the physical parameter of cement viscosity by controlling temperature. By heating the cement to accelerate polymerization, the viscosity increases over time, transforming the cement from a low-viscosity injectable state to a high-viscosity stable state that prevents leakage and extravasation
2Ease of operation
If the bone cement viscosity is kept low for easy injection, then the cement can be injected at lower pressures, but the cement may not adequately fill the vertebral body and may leak
Solution Approach 1:
The system dynamically evolves cement viscosity during the injection process. Initially, the cement maintains low viscosity for easy injection and complete filling, then progressively increases viscosity to prevent leakage, providing both injectability and reliability through time-dependent viscosity control
Solution Approach 2:
The system performs preliminary action by pre-cooling or maintaining the cement at lower temperature before injection to keep viscosity low, then applies heating during injection to accelerate polymerization and increase viscosity, ensuring both easy injection and complete filling before preventing leakage
3Productivity
If the polymerization reaction is accelerated to increase cement viscosity quickly, then the working time is reduced, but the risk of premature setting and loss of control is increased
Solution Approach 1:
The system applies feedback by monitoring cement temperature and polymerization progress, then adjusting heating power to control the rate of viscosity increase. This closed-loop control allows rapid setting when needed while maintaining precision and preventing premature setting through real-time adjustments
Solution Approach 2:
The system uses periodic or controlled heating cycles to accelerate polymerization at specific stages. By applying heat in controlled periods rather than continuously, the system can speed up setting when appropriate while maintaining control, preventing runaway polymerization
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 provides a controlled and consistent viscosity of the bone cement, reducing the risk of leakage and extravasation, thereby improving the safety and effectiveness of vertebral compression fracture treatments.
Implementation Method 1
A system comprising a bone cement kit with data transmitters and receivers, temperature sensors, and an energy emitter to control the viscosity of the cement in real-time
Data Source
AI summary
Systems and methods for treating vertebral compression fractures are provided. A kit can include at least one body containing a bone cement precursor to be mixed with at least one other bone cement precursor to form a bone cement. The body or a package containing the body can include at least one sensor. In some embodiments the sensor can be a temperature sensor. In some methods, data from the sensor can be used to determine certain parameters related to a treatment interval involving the bone cement.