Joint Revision Surgery Apparatus Blade Guide Block
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Solution Overview
Problem
Current joint revision surgery methods are invasive, time-consuming, and often result in significant blood loss, lengthy operating room times, and increased complications due to the complexity of removing and replacing hip, shoulder, and knee prostheses, with existing tools requiring multiple instruments and causing bone instability and infection risks.
Innovation Solution
The Joint Revision Surgery Apparatus features a blade guide block frame with multiple blade guide slots and a central cavity to securely position and remove prostheses using straight, curved, and compound curved knife blades, facilitated by a T-handle screw, reducing the need for extensive instrumentation and allowing for quicker extraction with less bone damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional joint revision surgery methods are used, then complete removal of existing prosthesis can be achieved, but the procedure is time-consuming and results in significant blood loss
Solution Approach 1:
The blade guide block is divided into multiple sections with separate guide slots for different knife blades (osteotomes). Each slot can accommodate a specific blade type for different cutting tasks, allowing simultaneous or sequential cutting operations on multiple prosthesis surfaces without repositioning the guide block, thereby reducing operating time and blood loss.
Solution Approach 2:
The blade guide block frame serves multiple functions: it guides multiple different knife blades, provides structural support during prosthesis removal, and can be positioned on different surfaces of the prosthesis. This multi-functionality eliminates the need for multiple separate instruments, streamlining the surgical procedure.
2Reliability
If multiple instruments are used for prosthesis removal, then complete extraction can be achieved, but device complexity increases and bone stability is compromised
Solution Approach 1:
Multiple guide slots for different knife blades are integrated into a single blade guide block frame. This consolidation allows multiple cutting functions to be performed with one instrument rather than requiring multiple separate guide blocks and instruments, reducing overall device complexity while maintaining complete prosthesis removal capability.
Solution Approach 2:
The blade guide block acts as an intermediary device that coordinates the action of multiple knife blades. Instead of using multiple complex instruments directly on the prosthesis, the guide block mediates their positioning and movement, simplifying the surgical workflow and reducing the number of instruments needed.
3Productivity
If invasive tools are used extensively, then prosthesis removal can be completed, but blood loss increases and complications arise
Solution Approach 1:
The blade guide block is pre-positioned on the prosthesis surface before cutting begins. The guide slots are pre-configured to receive specific knife blades, allowing the surgeon to start cutting immediately without repeated instrument changes or repositioning. This preliminary setup reduces the overall invasiveness of the procedure and minimizes blood loss.
Data Source
AI summary
The present application is directed a Joint Revision Surgery Apparatus which includes a blade guide block which has a plurality of blade guide slots and a central cavity. The blade guide block central cavity is positioned over the trunnion end of the existing prosthesis to be removed and secured to the prothesis. Straight, curved and compound curved knife blades are guided by the blade guide slots to cut the prothesis free. The securing of the guide blade block support apparatus against the femur is accomplished by the means of a male threaded T handle screw or male threaded eyebolt threading into one of the female threaded orifices in the blade guide block frame. The guide blocks in varying sizes and configurations, straight and curved knifes blades and related accessories may be sold as a complete kit. The Joint Revision Surgery Apparatus facilitates rapid, efficient and complete removal of an existing prosthesis during joint revision surgery.