Surgical Broach Extraction Device with Non-Planar Engagement
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Solution Overview
Problem
Existing surgical instruments for extracting prosthetic components, such as broaches, often face difficulties in removal due to sub-optimal engagement and alignment, especially in cases where the broach becomes stuck, requiring additional devices and increasing surgical time and complexity.
Innovation Solution
A surgical instrument extraction device with a unique engagement element featuring non-planar surfaces, including part-spherical sections, allows for optimized engagement and alignment by transitioning through various orientations to securely attach and detach from the broach, minimizing space requirements and simplifying the extraction process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional engagement elements with planar surfaces are used, then the device structure is simple, but the engagement reliability is insufficient and broaches may become stuck
Solution Approach 1:
The engagement element incorporates non-planar surfaces including part-spherical sections that transition between different orientations. This curvature allows the engagement element to rotate and adapt to the broach geometry, providing reliable engagement without requiring complex multi-component structures. The spherical sections enable smooth transitions between engagement states.
2Adaptability or versatility
If additional extraction devices are used to remove stuck broaches, then the extraction capability is enhanced, but the surgical time and complexity increase
Solution Approach 1:
The engagement element is designed to handle multiple extraction scenarios with a single structure. It can engage broaches in various orientations and configurations, providing universal extraction capability. The non-planar surfaces allow the same engagement element to adapt to different broach geometries without requiring additional specialized devices.
Solution Approach 2:
The engagement element can transition dynamically between different orientations and engagement states. This dynamic capability allows it to adapt during the extraction process, maintaining effective engagement even when broaches become stuck or are positioned at unusual angles, eliminating the need for additional extraction devices.
3Strength
If the engagement element has large dimensions for secure engagement, then the engagement strength is improved, but the space requirements increase
Solution Approach 1:
The part-spherical surfaces of the engagement element provide increased surface area for engagement without requiring larger overall dimensions. The curved surfaces distribute contact forces more effectively, maintaining high engagement strength while minimizing the volume occupied by the engagement element during insertion and extraction.
Data Source
Figure 1
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Figure 3a~3b
AI summary
A surgical instrument extraction device, kit incorporating the same and a method of using the extraction device are provided. The device comprises a body which has a first mounting location provided at the proximal end of the body and a second mounting location provided at the distal end of the body, wherein the second mounting location includes an engagement element for the surgical instrument to be extracted in use, the engagement element having a first extent between a first pair of points on opposite sides of the engagement element and having a second extent between a second different pair of points on opposite sides of the engagement element, wherein the first extent is greater than the second extent, the engagement element further including one or more non-planar surfaces.