Helical Bone Cleaning Tool for Spine Fusion
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Solution Overview
Problem
Current bone cleaning methods during spine fusion surgery are tedious, incomplete, and time-consuming, often leading to inadequate bone graft preparation, increased pseudoarthrosis, and suboptimal fusion results due to the inefficiency of existing tools in removing soft tissue without damaging bone stock.
Innovation Solution
A bone cleaning tool with a double or triple helix flute design and customizable spines and apertures, capable of being used with a high-speed surgical drill, effectively removes soft tissue from bone without excessive heating or bone loss, allowing for efficient and precise preparation of bone grafts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual scraping with periosteal elevators, curettes, and rongeurs is used to clean bone, then soft tissue removal can be achieved, but the process becomes tedious, time-consuming, and incomplete
Solution Approach 1:
The patent replaces manual mechanical scraping tools (curettes, rongeurs, elevators) with a powered rotary bone cleaning tool that uses rotational motion to automatically remove soft tissue and debris from bone surfaces, significantly reducing the time and effort required for bone preparation
Solution Approach 2:
The bone cleaning tool incorporates vibratory motion in addition to rotation, creating a combined rotary-vibrating action that enhances the effectiveness of soft tissue removal and debris evacuation from bone surfaces, improving cleaning efficiency while reducing procedure time
2Productivity
If high-speed drilling is used to remove soft tissue, then cleaning speed increases, but excessive heat is generated that can damage bone stock
Solution Approach 1:
The patent introduces irrigation fluid as an intermediary substance between the rotating bone cleaning tool and the bone surface. This fluid serves multiple functions: it acts as a coolant to dissipate heat generated by friction, provides lubrication to reduce thermal buildup, and facilitates debris removal, thereby enabling high-speed operation without thermal damage to the bone
Solution Approach 2:
The system utilizes hydraulic irrigation (fluid delivery) to the bone interface during high-speed rotary cleaning. The pressurized fluid flow provides continuous cooling and lubrication, allowing the tool to operate at high speeds for improved productivity while preventing excessive temperature rise that would compromise bone stock
3Reliability
If aggressive soft tissue removal is performed to ensure complete cleaning, then soft tissue elimination improves, but significant bone stock is lost in the process
Solution Approach 1:
The bone cleaning tool features selectively positioned and configured cutting elements (such as spines, flutes, or specialized cutting edges) that are optimized for soft tissue removal. These elements are strategically placed to target soft tissue attachments while minimizing contact with and removal of bone stock, achieving reliable cleaning with preserved bone volume
Solution Approach 2:
The cutting structure of the bone cleaning tool is segmented into multiple discrete elements (such as individual spines, flutes, or cutting segments) that can be optimized for different functions. Some segments are designed specifically for soft tissue engagement while others minimize bone interaction, allowing effective cleaning without excessive bone loss
4Adaptability or versatility
If multiple tools are used for different bone preparation tasks, then functional versatility is achieved, but device complexity and procedure time increase
Solution Approach 1:
The bone cleaning tool is designed as a multi-functional device that can perform various bone preparation tasks including soft tissue removal, debris evacuation, and bone surface conditioning. By integrating multiple functions into a single tool, the system eliminates the need for multiple separate instruments, reducing device complexity and procedural time while maintaining versatility
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 tool significantly reduces the time and effort required for bone cleaning, improves bone yield, and enhances fusion outcomes by ensuring thorough removal of soft tissue while preserving bone integrity, thus reducing the risk of pseudoarthrosis and improving surgical efficiency.
Implementation Method 1
A bone cleaning tool with a double or triple helix flute design and customizable spines and apertures, capable of being used with a high-speed surgical drill, effectively removes soft tissue from bone
Data Source
AI summary
The present invention is directed to systems, methods, tools and surgical procedures that provide for improved, faster and/or more efficient methods for cleaning bone of soft tissue in preparation for use in bone grafting and surgery, including specific applications particularly useful in fusion procedures and/or other surgeries of the lumbar, cervical, and/or thoracic spine and/or other anatomical locations, desirably allowing for faster and complete healing.