Surgical Rongeur Interchangeable Amorphous Metal Tip
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Solution Overview
Problem
Conventional surgical rongeur devices, such as the Kerrison rongeur, face challenges with blade sharpness and sterility, leading to increased costs and maintenance cycles, as they require frequent sharpening and sterilization, which can compromise their precision and longevity.
Innovation Solution
A surgical cutting apparatus with an interchangeable, detachable tip made from amorphous metal, allowing for easy replacement and sharpening or sterilization, reducing the need for multiple reusable devices and minimizing the costs associated with cleaning and re-sterilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple reusable rongeur devices are used to maintain sharpness and sterility, then blade precision is improved, but device complexity and sterilization costs increase
Solution Approach 1:
The rongeur device is divided into two segments: a reusable handle and an interchangeable tip containing the blade. This segmentation allows the blade-containing tip to be easily replaced when dull or contaminated, while the expensive handle portion is reused. The tip can be quickly detached and replaced without affecting the handle, enabling multiple tips to serve a single handle throughout the surgical procedure.
Solution Approach 2:
The blade tip is designed to be disposable or easily replaceable. When the blade becomes dull or contaminated beyond acceptable limits, the entire tip is discarded or set aside for sterilization while the handle is recovered and reused. This approach eliminates the need to sterilize the entire device and allows rapid replacement of compromised blades.
2Reliability
If multiple reusable rongeur devices are used to maintain sterility, then infection risk is reduced, but cleaning and sterilization time increase
Solution Approach 1:
The device is segmented into a handle and tip, allowing the tip to be separately sterilized or replaced. This reduces sterilization time by isolating the contamination-prone blade area from the handle, enabling parallel processing where tips are sterilized while handles are prepared for use.
Solution Approach 2:
Multiple sterile tips can be prepared in advance and stored ready for use. If a blade becomes contaminated or dull during surgery, a pre-prepared sterile tip can be immediately swapped in without interrupting the surgical flow for sterilization procedures.
3Strength
If rigid metal construction is used for cutting ability, then strength is improved, but cleaning and sterilization difficulty increase
Solution Approach 1:
The rigid metal construction is confined to only the tip portion that requires cutting strength, while the handle can use different materials optimized for ergonomics and sterilization. This segmentation allows the metal tip to be easily detached and sterilized independently without complicating the overall device sterilization process.
Data Source
AI summary
A surgical rongeur device has an interchangeable, locking tip at a cutting end for engageable replacement with a variety of cutting tips for facilitating sterilization and blade changes. A detachable linkage between a handle portion and an interchangeable cutting tip (tip) provides a strong connection for actuation by the handle end but allowing for tip replacement via slidable, lateral displacement of the tip. The tip includes a blade and footplate formed from an amorphous metal for longevity and strength advantages. A handle provides a lever to actuate the tip from slidable communication via the detachable linkage. An interlocking member extends longitudinally from the handle into an internal slot on the tip for locking the tip by preventing lateral movement out of alignment with the handle. The aligned tip is responsive to actuation from the handle via a rail for disposing the blade longitudinally against the footplate.