Two-Part Surgical Guide for Precise Osteotomy Through Smaller Incisions
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Solution Overview
Problem
Current patient-specific surgical guides for osteotomies are bulky, requiring large incisions and complicating surgeries due to their size, which affects precision and increases healing time and scarring.
Innovation Solution
A two-part surgical guide system is designed, where a first part with a low profile and registration surfaces conforms to the patient's anatomy for stability, and a second part with functional elements is positioned using guide wires for precise procedures, reducing bulk and incision size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-piece patient-specific surgical guide is used to ensure stability and precision during osteotomy, then the guide provides comprehensive functional elements (drill guides, cutting guides, registration features), but the guide becomes bulky requiring larger incisions and causing more soft tissue disruption
Solution Approach 1:
The surgical guide is divided into two separate parts: a registration guide that remains on the bone to provide stability and registration, and a functional guide that contains drill guides and cutting guides but is removed after positioning. This segmentation allows each component to be optimized for its specific function without the bulk of a single-piece design.
Solution Approach 2:
The functional elements (drill guides, cutting guides) are extracted from the registration guide and placed in a separate functional guide that is removed after use. This extraction eliminates the need for the registration guide to be bulky, reducing soft tissue disruption while maintaining surgical precision.
2Adaptability or versatility
If the surgical guide includes all necessary functional elements (drill guides, cutting guides, registration features) in a single piece, then comprehensive guidance is provided, but the guide requires larger incisions and makes the surgical site crowded
Solution Approach 1:
The guide system is segmented into two parts with distinct functions: the registration guide provides stable positioning and registration, while the functional guide provides drill and cut guidance. This segmentation allows the functional guide to be removed after positioning, reducing the required incision size while maintaining all necessary functional capabilities.
Solution Approach 2:
The registration guide is used first to establish precise positioning and insert reference pins. Once positioning is confirmed, the functional guide is used for drilling and cutting operations, then removed. This preliminary action sequence allows comprehensive guidance without requiring all elements to be present simultaneously, reducing incision size.
3Measurement precision
If extensive checking of surgical parameters is performed during the procedure to ensure accuracy, then precise osteotomy is achieved, but the procedure becomes more time-consuming and complicated
Solution Approach 1:
All measurements, planning, and parameter verification are performed preliminarily using 3D imaging and computer planning before surgery. The surgical guide is custom-designed based on pre-operative planning, incorporating all necessary alignment and positioning information. During surgery, the guide simply executes the pre-planned parameters without requiring extensive intraoperative checking, reducing procedure time while maintaining high precision.
Solution Approach 2:
The pre-operative 3D plan and measured parameters are copied into the custom-designed surgical guide, which physically embodies all the planning information. This copying process transfers the precision work to the manufacturing stage rather than the surgical stage, allowing accurate execution without time-consuming intraoperative measurements.
Data Source
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AI summary
Certain aspects relate to a two-part surgical guide system for use in surgical procedures such as osteotomies. Certain aspects provide a first part including a contact surface configured to conform to a portion of an anatomy of the patient to substantially restrict movement of the first part with respect to the anatomy of the patient. The first part further includes guiding elements configured to receive reference pins and guide placement of the reference pins in the anatomy of the patient. Certain aspects further provide a second part, separate from the first part. The second part includes apertures. Each aperture is configured to receive a reference pin and substantially restrict movement of the second part with respect to the anatomy of the patient. The second part further includes a functional element for guiding a procedure on the anatomy of the patient.