Bone Delivery Device with Vibration Compaction for Irregular Void Creation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current medical devices for delivering media to bone structures, such as those used in vertebroplasty, face challenges in creating precise voids with irregular geometries and ensuring adequate mechanical interlocking of biomaterials, leading to potential weakness in the bone tissue construct.
Innovation Solution
A delivery apparatus comprising a tubular element with a guidewire and a removal element, which can create a channel and void within the bone structure, and a vibration device to mobilize particles for optimal interlocking of biomaterials, facilitating the use of pressurized gas for void creation and ensuring strong biomaterial constructs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed geometry expandable balloon tamp is used to create bone voids, then the procedure can be performed with a standardized device, but the device cannot create desired voids with irregular geometries or remove bone tissues precisely
Solution Approach 1:
The balloon tamp is designed to be dynamically adjustable in both geometry and size. The distal end can be expanded to different diameters and the proximal end can be inflated to different volumes, allowing the device to adapt to various void geometries and sizes while using a single standardized device rather than multiple fixed-geometry devices.
Solution Approach 2:
The device allows changing key parameters including the diameter of the distal end and the volume of the proximal end. These parameter adjustments enable the same device to create voids with different geometries and sizes, improving versatility without requiring multiple specialized devices.
2Manufacturing precision
If multiple component systems are used for channel creation and void formation, then precise control can be achieved, but the system becomes difficult to use and expensive
Solution Approach 1:
Multiple functions are merged into a single integrated device. The same device that creates the channel also contains the balloon tamp for void formation and the delivery apparatus for media injection. This consolidation maintains precision while significantly improving ease of operation by eliminating the need to coordinate and switch between multiple separate components.
Solution Approach 2:
The device performs multiple functions: channel creation, void formation with adjustable geometry, and media delivery. This multi-functionality is achieved within a single device structure, reducing the number of components needed and simplifying the procedural workflow while maintaining the precision required for successful treatment.
3Strength
If bone cement is injected without adequate mechanical interlocking of particles, then the delivery process is simple, but the resulting tissue construct has inadequate strength
Solution Approach 1:
A vibration device is integrated into the delivery apparatus to apply mechanical vibrations to the bone cement particles during delivery. This vibration facilitates adequate mechanical interlocking of particles within the void, significantly improving the strength of the resulting biomaterial construct while being incorporated as part of the overall delivery system rather than requiring a separate complex device.
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 apparatus effectively creates precise voids and enhances the mechanical interlocking of biomaterials within the bone structure, improving the structural integrity and strength of the treated area, addressing the limitations of existing technologies.
Implementation Method 1
A vibration device may be used to compact the media. The vibration device causes the media to vibrate at a frequency, thereby mobilizing the particles or granules within the media, creating liquefaction of the media, and rearranging the particles or granules so that they mechanically interlock or interdigitate with one another to form a more stable construct.
Data Source
AI summary
Apparatus for delivering a media to an anatomic void within a bone structure and compacting the media within the anatomic void includes a delivery device and a compaction device. The delivery device includes a tubular element, a guidewire, and a removal element. The removal element is capable of forming a void at a target site within the bone structure by cutting and/or deforming target bone tissue. A distal end of the guidewire may be detachable as a safety feature. The compaction device includes an elongate member and a vibration device connected to the proximal end of the elongate member. The vibration device creates vibration at the distal end of the elongate member, so that the media is mixed and/or compacted within the anatomic void.