Modular Tibia Preparation Instrument Assembly
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Solution Overview
Problem
Current orthopaedic surgical instruments lack an efficient method for preparing the proximal end of the tibia for prosthetic implantation, particularly in aligning and securing surgical drills and keel punches during joint arthroplasty procedures, which can lead to inaccuracies and complications.
Innovation Solution
The orthopaedic surgical instrument assembly includes a base trial, a guide tower, and a detachable alignment handle, which are used to position and secure fixation pins, guide surgical drills, and impact keel punches into the tibia, ensuring precise alignment and preparation for prosthetic implantation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional surgical instruments are used for tibial preparation, then the surgical procedure can be completed, but alignment accuracy and positioning precision deteriorate
Solution Approach 1:
The surgical instrument is divided into distinct modular components: a base trial component, a guide tower component, and a keel punch component. Each module performs a specific function and can be independently positioned and secured, allowing for precise alignment while maintaining manageable complexity through functional segmentation.
Solution Approach 2:
The guide tower serves as an intermediary component that bridges the base trial and the keel punch. It provides a structured interface for securing instruments and guiding their positioning, thereby improving alignment accuracy without requiring the entire system to be overly complex.
2Productivity
If multiple separate instruments are used for reaming and keel punch insertion, then flexibility is maintained, but surgical time and procedural efficiency worsen
Solution Approach 1:
Multiple functional capabilities (base trial positioning, guide tower securing, keel punch insertion) are merged into a single integrated instrument system. This consolidation allows the surgeon to perform multiple operations with one instrument rather than switching between multiple separate instruments, thereby improving surgical efficiency.
Solution Approach 2:
The integrated instrument system performs multiple functions: the base trial component provides positioning, the guide tower component provides securing and guidance, and the keel punch component provides insertion capability. This multi-functionality eliminates the need for multiple separate instruments while maintaining procedural flexibility.
3Stability of the object's composition
If fixation pins are used to secure the guide tower, then stability is improved, but the time required for pin insertion and removal worsens
Solution Approach 1:
The fixation pins are pre-positioned in the guide tower component before the surgical procedure begins. This preliminary preparation allows for rapid insertion and securing of the guide tower during surgery, improving stability while minimizing the time required for setup and instrument changes.
Data Source
AI summary
An orthopaedic surgical instrument assembly that includes a handle and a keel punch configured to be inserted into a proximal end of a surgically-prepared tibia of a patient. The handle includes a lever configured to secure the keel punch to the handle.