Surgical Cement Removal Tool with 360-Degree Cutting Edge
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Solution Overview
Problem
Current surgical cement removal tools are inadequate for efficiently scraping and removing surgical cement from the inner walls of bone cannulas during implant revision surgeries, especially when the cement is firmly adhered or located in hard-to-reach areas.
Innovation Solution
A surgical cement removal tool featuring an elongated shaft with a bowl-shaped scoop having a 360-degree cutting edge and a handle attachment structure, allowing for effective scraping and collection of cement, and optionally utilizing a slotted hammer for enhanced force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional cement removal tools are used, then the structure is simple, but the ability to remove firmly adhered cement from hard-to-reach areas is insufficient
Solution Approach 1:
The tool is segmented into distinct functional components: an elongated shaft for reach, a bowl-shaped scoop for collection, and a 360-degree cutting edge for comprehensive cement removal. This segmentation allows each component to be optimized for its specific function while working together to solve the overall problem of removing firmly adhered cement from hard-to-reach areas.
Solution Approach 2:
The cutting edge extends 360 degrees around the perimeter of the scoop, adding a rotational dimension to the scraping action. This allows the cutting edge to contact cement from all directions simultaneously, dramatically improving the ability to remove firmly adhered cement from the inner walls of bone canals compared to conventional linear scraping tools.
2Force
If a slotted hammer is used to apply additional force, then firmly adhered cement can be removed, but the risk of damaging surrounding bone tissue increases
Solution Approach 1:
The bowl-shaped scoop acts as an intermediary between the hammer strikes and the cement. The scoop's curved surface distributes the impact force evenly across the cement mass, allowing effective removal of firmly adhered cement while preventing concentrated forces that could damage surrounding bone tissue. The 360-degree cutting edge further distributes force around the entire circumference of the canal.
Solution Approach 2:
The tool allows dynamic application of force through optional hammer attachment. The surgeon can apply gentle manual pressure for loosely adhered cement or attach the slotted hammer for firmly adhered cement, adjusting the force level dynamically based on the specific surgical situation and cement adhesion strength.
3Productivity
If the cutting edge contacts all inner walls of the bone canal, then complete cement removal is achieved, but the tool becomes harder to maneuver in limited visibility areas
Solution Approach 1:
The bowl-shaped scoop with its curved, spherical geometry naturally conforms to the cylindrical shape of bone canals. This curvature allows the 360-degree cutting edge to contact all inner walls of the canal simultaneously while the rounded form facilitates easy insertion and maneuvering, even in areas of limited visibility. The curved surface guides the tool through tight spaces without requiring precise visual feedback.
Data Source
AI summary
A surgical cement removal tool including an elongated shaft having a proximal end and a distal end, and a bowl-shaped scoop affixed to the distal end. Handle attachment structure can be provided adjacent the proximal end of the elongated shaft to permit releasable attachment of the surgical cement removal tool to a handle. Alternatively, the proximal end of the elongated shaft may be permanently affixed to a suitable handle.