Customized 3D Printed Locating Structure for Pulmonary Nodule Localization
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Solution Overview
Problem
Current methods for localizing pulmonary nodules during thoracoscopic pulmonary surgery are challenging due to issues like small or deep nodule size, low density, radiation exposure from repeated CT scans, and the need for multiple trained medical staff, making them inefficient and burdensome for patients and healthcare resources.
Innovation Solution
A method using computer-aided design software to create a digital model of a patient's anatomy for precise localization, followed by 3D printing of a customized target site locating structure with an angle locating auxiliary unit, which assists in accurately positioning treatment devices like biopsy guns or needles, reducing the need for repeated CT scans and minimizing radiation exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If hook-wire locating needle or micro-coil is used for puncture localization under CT guidance, then localization precision is improved, but radiation exposure increases due to repeated CT scans
Solution Approach 1:
The patent applies preliminary action by performing the localization procedure before surgery using a customized positioning plate that fits the patient's anatomy. The plate is designed based on preoperative imaging data, and the localization is completed in advance, eliminating the need for repeated CT scans during the procedure while maintaining high localization precision.
2Measurement precision
If hook-wire locating needle or micro-coil is used for puncture localization, then localization precision is improved, but device complexity and staffing requirements increase
Solution Approach 1:
The patent uses copying by creating a customized positioning plate that replicates the patient's specific anatomical surface features based on preoperative imaging data. This custom-made template serves as a physical copy of the patient's anatomy, enabling precise localization without requiring complex imaging equipment or multiple trained operators during the procedure.
3Ease of operation
If palpation method is used for locating pulmonary nodule during surgery, then operation simplicity is improved, but measurement precision deteriorates for small or deep nodules
Solution Approach 1:
The patent applies preliminary action by performing the localization procedure before surgery using a customized positioning plate that fits the patient's anatomy. The plate is designed based on preoperative imaging data, and the localization is completed in advance, eliminating the need for repeated CT scans during the procedure while maintaining high localization precision.
4Measurement precision
If customized 3D printed locating structure is used, then localization precision and operation efficiency are improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies parameter changes by utilizing 3D printing technology to manufacture the customized positioning plate. This manufacturing method transforms the production process from traditional complex fabrication to a more straightforward digital-to-physical conversion, where the plate's geometry is defined by digital models derived from patient imaging data, simplifying the manufacturing process while enabling high customization.
Data Source
AI summary
The present invention discloses a method for precise localization and treatment of a target site, which builds a 3D digital model of an anatomical structure of a patient in accordance with tomographic image data of the patient; a structure model for locating a target site which comprises a template model for locating a target site and an angle locating auxiliary unit model is customized, and a position and an angle for loading and treating a target site are designed according to 3D position of the target site; then a target site locating structure is printed by 3D printing technology, and the target site locating structure is utilized to treat the target site.