Surgical Jig for Precise Axis Determination
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Solution Overview
Problem
Current surgical methods for determining the axis of a body part with complex geometry are limited in accuracy and often dependent on the surgeon's skill, leading to potential incorrect implant positioning, mechanical dysfunction, and tissue trauma.
Innovation Solution
A surgical jig with a handle, a mouth that engages the body part to define a flat plane, and a translatable guide with a channel perpendicular to the plane, allowing for precise alignment and minimization of tissue trauma, featuring auto-locating formations and a marker for image-guided surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual assessment (eye-balling) is used to determine the axis of a body part, then the surgical procedure is simple and quick, but the accuracy of axis determination is limited and highly dependent on surgeon skill
Solution Approach 1:
The surgical jig acts as an intermediary device between the surgeon and the body part. It includes a mouth that engages with anatomical landmarks on the body part, formations that mate with specific anatomical features to establish a reference frame, and a guide with a channel that defines the precise axis direction. This intermediary device translates the complex task of visual assessment into a mechanical positioning system that objectively determines the axis based on the engaged anatomical landmarks.
2Object-affected harmful factors
If a traditional surgical device with closed structure is used, then structural strength is maintained, but trauma to surrounding soft tissues is increased
Solution Approach 1:
The surgical jig is segmented into distinct functional components: a mouth portion that engages with the body part, formations that interface with anatomical landmarks, a guide with a channel for defining the axis, and a handle for manipulation. This segmentation allows each component to be optimized for its specific function - the mouth and formations can be designed to minimize tissue contact and trauma, while the guide and handle maintain the necessary structural strength for precise positioning and stability.
3Adaptability or versatility
If the guide is fixed relative to the mouth, then the device structure is simpler, but the adaptability to body part morphology variations is reduced
Solution Approach 1:
The connection between the guide and the mouth is made dynamic rather than fixed. The guide is mounted on the jig body in a manner that allows it to be adjusted and repositioned relative to the mouth. This dynamic mounting enables the surgeon to adapt the guide's position and orientation to match variations in body part morphology while maintaining precise axis determination. The formations that engage with anatomical landmarks provide stable reference points that guide this adjustment process.
Data Source
AI summary
A surgical jig and method of use in image guided and non-guided surgery are described. The jig is for use in determining an axis of a body part. The jig includes a handle at a proximal end and a mouth at a distal end. The mouth is engagable about the body part and defines a substantially flat plane. A guide has a channel with an axis substantially perpendicular to the plane and a support attaches the guide to the jig. The guide can be translatable relative to the mouth while maintaining the axis substantially perpendicular to the plane. The method determines an axis relative to a body part using the jig. The method comprises engaging the mouth about the body part and translating the guide relative to the mouth so as to align the axis of the channel with the axis of the body part.