Joint Surface Guide Assembly for Minimally Invasive Bone Preparation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current joint surface preparation methods require large incisions and lack minimally invasive techniques, often involving saw blades without the aid of guides.
Innovation Solution
A guide system comprising a cut guide and alignment guide, along with a cleaning system and cutting instrument, allows for minimally invasive joint surface preparation by making incisions, inserting alignment and cut guides, and using wires for bone removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If open technique with large incision is used to prepare joint surface, then access to joint is improved, but tissue damage increases
Solution Approach 1:
The guide system is divided into multiple components including alignment guide, cut guide, and cutting instrument that can be inserted separately through small incisions. This segmentation allows minimally invasive access while maintaining surgical capability.
Solution Approach 2:
The guide system acts as an intermediary device that facilitates joint surface preparation through small incisions. The guide provides mechanical mediation between the external cutting instruments and the internal joint structures, enabling precise operations without large exposures.
2Productivity
If saw blade is used to remove cartilage and subchondral bone, then bone removal efficiency is improved, but precision control deteriorates
Solution Approach 1:
The cut guide serves as an intermediary that precisely positions and constrains the cutting instrument. The guide's slot and engagement mechanisms mediate between the power-driven cutting instrument and the bone surface, ensuring accurate cut locations and orientations while maintaining efficient bone removal.
Solution Approach 2:
The system changes the operational parameters by using a guided cutting instrument instead of free-hand saw blade. The guide constrains the cutting path, depth, and angle parameters, transforming uncontrolled high-efficiency cutting into precisely controlled efficient cutting.
3Device complexity
If open technique without guide is used, then surgical simplicity is improved, but alignment precision deteriorates
Solution Approach 1:
The alignment guide acts as an intermediary device that establishes precise reference frames and alignment criteria. It mediates between the surgeon's visual assessment and the actual bone alignment, providing mechanical guidance for accurate joint surface preparation and implant positioning.
Solution Approach 2:
The alignment guide is inserted and positioned before the cutting operation begins. This preliminary action establishes the correct alignment and orientation references in advance, ensuring that subsequent cutting and bone removal operations maintain precise alignment without requiring complex real-time adjustments.
4Object-affected harmful factors
If minimally invasive approach is adopted, then tissue damage is reduced, but device complexity increases
Solution Approach 1:
The guide system employs a nested structure where the cut guide is inserted within the alignment guide, and the cutting instrument is inserted through the cut guide. This nesting allows multiple functional components to be delivered through a single small incision, achieving minimally invasive access while maintaining the complexity of the guided system.
Solution Approach 2:
The guide system is designed as a universal platform that combines alignment, cutting guidance, and instrument support functions in a single integrated system. This multi-functionality reduces the need for multiple separate devices and incisions, achieving minimally invasive surgery while providing comprehensive surgical capabilities.
Data Source
AI summary
Guides, instruments, devices, systems and methods for maintaining, correcting and/or resurfacing the multiple bones of a joint are disclosed. The guide system includes a cut guide and an alignment guide for engagement with the cut guide. The guide system also includes a cleaning system with a guide and a cutting instrument. Methods of using the guide system and cleaning system are also disclosed.