Bone Cement Segmentation for Vertebral Fill and Extravasation Control
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Solution Overview
Problem
Current bone reinforcement methods, such as vertebroplasty and kyphoplasty, face challenges with cement extravasation and incomplete filling of the vertebral body, leading to instability and potential further fractures in osteoporotic bones, with existing technologies failing to effectively prevent cement leakage and achieve a homogeneous cement matrix for enhanced stability.
Innovation Solution
A method and kit involving a first flowable quantity of particulate bone cement and a second flowable quantity of liquid bone cement, which polymerize in situ to form a homogenous matrix, using radiopaque markers and occluding particles to reduce extravasation, administered through a controlled delivery system without the need for expandable devices or balloons, ensuring complete vertebral body fill and stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional bone cement injection methods are used, then bone reinforcement is achieved, but cement extravasation occurs and complete vertebral body fill is not achieved
Solution Approach 1:
The bone cement is divided into two distinct flowable components: a first flowable quantity in particulate form and a second flowable quantity in liquid form. This segmentation allows each component to be optimized for specific functions - the particulate component provides structural framework while the liquid component fills gaps and prevents extravasation, together achieving complete vertebral body fill without cement leakage
Solution Approach 2:
The invention creates a composite bone cement system combining particulate and liquid flowable materials that polymerize together in situ to form a homogeneous matrix. This composite approach leverages the advantages of both material forms - the particulate structure provides reinforcement while the liquid component ensures complete penetration and stabilization without extravasation
2Manufacturing precision
If high pressure injection is used to prevent cement extravasation, then complete vertebral body fill is achieved, but the risk of cement leakage into surrounding tissues increases
Solution Approach 1:
The particulate flowable bone cement acts as an intermediary material that is injected first to create a framework within the vertebral body. This framework then guides and contains the subsequent liquid flowable bone cement, ensuring complete vertebral body fill while preventing cement leakage into surrounding tissues through controlled material interaction
3Ease of operation
If expandable devices or balloons are used to create cavity, then cement injection control is improved, but device complexity and procedure time increase
Solution Approach 1:
The invention extracts and eliminates the need for expandable devices or balloons from the procedure. Instead, it uses a simple delivery system that injects the two flowable bone cement components directly into the vertebral body, achieving complete fill and stabilization without the complexity of expandable device insertion and manipulation
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 significantly reduces cement extravasation, achieves a homogeneous cement matrix for enhanced bone stability, and provides complete vertebral body fill, thereby preventing further fractures and improving patient mobility and quality of life.
Implementation Method 1
A method and kit involving a first flowable quantity of particulate bone cement and a second flowable quantity of liquid bone cement, which polymerize in situ to form a homogenous matrix
Data Source
AI summary
The invention provides a method and a kit for administering bone cement to the interior cavity of a bony member to enhance bone strength, stabilizing an existing fracture thus reducing susceptibility of the bone to further fracture and/or collapse. The method and kit may include additional components, such as, bone growth enhancing agents, radiopaque components or the like.