3D Surgical Guide for Internal Tumor Resection via Slanted Entry
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Solution Overview
Problem
Conventional surgical guides are limited in guiding surgical instruments to tumors located inside organs without exposure on the surface, risking damage to normal tissues during partial resection procedures like renal cell carcinoma, where excessive tissue damage can impair organ function.
Innovation Solution
A customized surgical guide apparatus that models a 3D image of the organ using external imaging, determines the cutting line and entry angle for the surgical instrument, and manufactures a slanted guide to accurately direct the instrument to the tumor's location, minimizing tissue damage and facilitating safer resection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional surgical guide is used that only guides the treatment portion exposed on the outer surface, then the guide structure is simple, but the tumor location inside the organ cannot be accurately guided
Solution Approach 1:
The surgical guide transitions from surface-level 2D guidance to 3D internal guidance by incorporating a guide hole that penetrates through the organ model, enabling the surgical instrument to access and guide to internal tumor locations that are not visible on the outer surface
Solution Approach 2:
The guide hole acts as an intermediary structure that connects the external surgical instrument with the internal tumor location, allowing indirect guidance to deep-seated tumors while maintaining a relatively simple overall guide structure
2Measurement precision
If the surgical guide does not account for entry angle, then the guide structure is simpler, but the surgical instrument cannot accurately reach the tumor location
Solution Approach 1:
The guide hole is designed with a specific slanted shape that provides localized angular guidance at the entry point, enabling the surgical instrument to approach the tumor at the correct angle while the rest of the guide structure remains relatively simple
Solution Approach 2:
The guide hole geometry is specifically designed with slanted walls that change the directional parameter of the surgical instrument, transforming the entry angle from an uncontrolled variable to a precisely controlled parameter that ensures accurate tumor targeting
3Ease of operation
If the surgical guide is not customized to the organ shape, then the manufacturing process is simpler, but the guide cannot be properly mounted on the organ
Solution Approach 1:
The outer surface of the surgical guide is customized to match the specific local geometry of the target organ, ensuring proper fit and mounting stability, while other portions of the guide can be manufactured using standardized processes
Solution Approach 2:
The organ surface is pre-scaned and modeled to create a customized guide structure that fits the specific patient anatomy, allowing the guide to be mounted directly on the organ surface without requiring complex adjustment mechanisms during surgery
Data Source
AI summary
Provided is an apparatus for manufacturing a surgical guide that guides a cutting line formed to surround a tumor of an organ, the apparatus including: an organ modeling unit configured to model a 3-dimensional (3D) image of the organ, based on an image of a patient captured by an external imaging apparatus; a cutting line determining unit configured to determine, in the 3D image of the organ, the cutting line to correspond to a location of the tumor and an entry angle of a surgical instrument to the cutting line; and a guide manufacturing unit configured to manufacture a surgical guide that guides the surgical instrument to the cutting line in a slanting manner corresponding to the entry angle, based on the 3D image of the organ.