Vertebral Cavity Cauterization for Cement Extravasation Prevention
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Solution Overview
Problem
Vertebroplasty procedures using PMMA bone cement can result in PMMA by-products being sucked into the bloodstream, leading to unintended consequences such as embolism, and cause pain due to nerve ending micro-motion at the fracture site.
Innovation Solution
Cauterization of the inner cavity of a fractured vertebra using heat or cryo-ablation before inserting bone cement to seal vessels and destroy nerve endings, preventing extravasation of cement and reducing pain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PMMA bone cement is injected into the vertebral body to stabilize the fracture, then the fracture stability and pain relief are improved, but PMMA by-products may be sucked into the bloodstream causing embolism
Solution Approach 1:
The patent applies preliminary action by performing cauterization of the vertebral cavity and sealing of vascular channels before injecting the PMMA bone cement. This preliminary thermal treatment destroys nerve endings and seals vessels to prevent cement extravasation into the bloodstream, thereby eliminating embolism risk while maintaining fracture stabilization benefits
Solution Approach 2:
The patent converts the harmful effect of heat into a beneficial outcome by using thermal energy to cauterize soft tissues, seal vascular channels, and destroy nerve endings. The heat that could potentially cause tissue damage is instead harnessed to prevent cement leakage and eliminate pain sources, transforming a potential harm into a protective mechanism
2Reliability
If bone cement is injected to stabilize the fracture, then pain from micro-motion is reduced, but nerve ending micro-motion continues to generate pain
Solution Approach 1:
The patent performs preliminary cauterization of the vertebral cavity and destruction of nerve endings before bone cement injection. This preliminary thermal treatment eliminates the source of nerve-related pain while the subsequent cement injection provides fracture stabilization, ensuring both pain relief mechanisms are activated without interference
Solution Approach 2:
The patent extracts and eliminates the harmful nerve endings from the vertebral cavity through thermal cauterization before introducing the bone cement. By removing the nerve tissue that would continue to generate pain despite fracture stabilization, the patent isolates the beneficial stabilization effect from the harmful pain generation
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
Reduces or eliminates the extravasation of bone cement into the bloodstream and significantly reduces pain by stabilizing the fracture site, thereby preventing embolism and alleviating pain from nerve ending micro-motion.
Implementation Method 1
cauterization (by heat or freezing) of an inner cavity of a vertebral body
Implementation Method 2
cauterization (by heat or freezing) of an inner cavity of a vertebral body
Data Source
AI summary
Disclosed are vertebroplasty methods that include cauterizing an inner cavity of a vertebra of a mammal, such as a human, and injecting bone cement into the vertebra. Systems and kits for performing such methods are also disclosed.