Osteotome Guide Block for Faster Joint Implant Revision Removal
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Solution Overview
Problem
Existing joint revision surgery methods are inefficient, time-consuming, and often result in significant blood loss due to the difficulty in removing implants, particularly collared femoral stems, with existing tools requiring multiple instruments and lengthy procedures.
Innovation Solution
A Joint Revision Surgery System comprising an osteotome blade/surgical chisel guide block, a surgical slide hammer, an osteotome blade/surgical chisel locking handle assembly, and various flexible and rigid osteotome/surgical chisel blades, allowing for rapid extraction of implants by adjusting the guide block to accommodate varying stem sizes and shapes, including collared and non-collared prostheses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing tools and methods are used for implant removal, then the surgical procedure can be performed with conventional instruments, but the procedure becomes time-consuming and results in significant blood loss
Solution Approach 1:
The implant removal system is segmented into distinct functional components: a guide block with multiple guide slots for different blade types, various specialized osteotome blades (straight, curved, compound curved), and a slide hammer. This segmentation allows each component to be optimized for its specific function while working together as an integrated system, enabling rapid implant removal compared to using conventional instruments
Solution Approach 2:
The guide block serves multiple functions by incorporating guide slots for different types of osteotome blades (straight, curved, compound curved) and accommodating various blade sizes. This multi-functionality allows a single guide block to handle different implant configurations and removal scenarios, reducing the need for multiple specialized instruments and speeding up the surgical procedure
2Reliability
If existing tools are used for implant removal, then conventional instruments can be utilized, but the procedure results in significant blood loss
Solution Approach 1:
The osteotome blades are pre-positioned through the guide block's guide slots and aligned with the implant before the actual removal action. The guide block pre-establishes the correct trajectory and positioning, allowing the blades to immediately engage the implant upon insertion. This preliminary positioning reduces unnecessary tissue disruption and minimizes blood loss during the removal process
Solution Approach 2:
The guide block acts as an intermediary device that mediates between the surgeon's actions and the implant removal process. It provides a stable platform that guides the osteotome blades precisely along the intended path, ensuring clean cuts through the implant and surrounding bone while minimizing collateral damage to blood vessels and reducing overall blood loss
3Adaptability or versatility
If multiple instruments are used for implant removal, then various surgical tasks can be performed, but the procedure becomes complex and time-consuming
Solution Approach 1:
The system merges multiple instrument functions into a single integrated guide block assembly. The guide block combines guide slots for different blade types, mounting mechanisms for various osteotome blades, and attachment features for the slide hammer. This consolidation allows the surgeon to use one primary instrument (the guide block) with interchangeable blades rather than managing multiple separate instruments, reducing procedural complexity while maintaining versatility
Solution Approach 2:
The system incorporates dynamic elements that allow adaptation during surgery. The guide block can accommodate different blade configurations and positions, and the slide hammer can be attached or removed as needed. This dynamic adaptability enables the same basic system to handle various implant removal scenarios without requiring completely different instrument sets, simplifying the overall approach while maintaining flexibility
Data Source
AI summary
The present application is directed a Joint Revision Surgery System and Method which includes a surgical osteotome blade guide block which has a plurality of rearward blade guide slots, a central cavity and a plurality of forward guide slots having a two-way adjustable L-shaped guide plate. The surgical osteotome blade guide block central cavity houses a stem trunnion securing and is secured to the prosthesis to be extracted. The guide blade block is secured to the trunnion of the prosthesis to be extracted using a stem trunnion securing member housed within the guide block. Straight, curved, flexible and rigid and compound curved osteotome blades are guided by the blade guide slots to cut the implant free from the bone. The Joint Revision Surgery System and Method facilitates rapid, efficient and complete removal of an existing prosthesis during joint revision surgery, and significantly increases positive medical outcomes for joint revision procedures.