Endoscope Positioning via Coordinate System Mapping
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Solution Overview
Problem
Current medical apparatuses face challenges in accurately positioning endoscopes within luminal organs, such as bronchia, due to inconsistencies between coordinate systems, leading to difficulties in displaying consistent and accurate surgical support images during procedures.
Innovation Solution
A medical apparatus that includes a storage section for three-dimensional image information, an image pickup unit, a luminal organ extracting section, a position correspondence control section, a feature information acquisition section, an associated image generating section, and a control section to ensure accurate positioning and display of feature information relative to the endoscope's position within the bronchia, using coordinate system correspondence and image processing techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If coordinate system correspondence is implemented between 3D image data and endoscope position data, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent introduces a position correspondence control section as an intermediary component that establishes coordinate system correspondence between the 3D image data and endoscope position data. This mediator converts position information from different coordinate systems into a unified reference frame, enabling accurate positioning without requiring direct complex integration between imaging and navigation systems.
Solution Approach 2:
The patent replaces complex mechanical positioning systems with computational coordinate transformation. Instead of using sophisticated mechanical mechanisms to physically align reference frames, the system uses software-based coordinate system correspondence to achieve the same positioning accuracy, thereby reducing mechanical complexity.
2Measurement precision
If position estimation is performed continuously during endoscope insertion, then positioning accuracy is improved, but processing time increases
Solution Approach 1:
The patent performs preliminary actions by pre-establishing the coordinate system correspondence relationship before actual endoscope insertion. The position correspondence control section is configured in advance with the transformation parameters, so that during the procedure, only simple position look-up and display operations are needed, rather than performing complex real-time calculations.
3Ease of operation
If feature information is displayed in the vicinity of endoscope position, then ease of operation is improved, but information accuracy may deteriorate if position correspondence is incorrect
Solution Approach 1:
The patent implements a feedback mechanism where the displayed feature information serves as visual feedback to the operator about the endoscope's position within the luminal organ. The position correspondence control section continuously monitors position data and updates the displayed information accordingly, allowing the operator to verify positioning accuracy and make adjustments based on the visual feedback from the 3D image data.
Data Source
AI summary
A medical apparatus includes: a storage section that stores three-dimensional image information in a subject, the three-dimensional image information being acquired in advance; an image pickup unit that acquires an optical image in the subject; a luminal organ extracting section that extracts image information of a three-dimensional shape of a specific luminal organ in the subject; a position correspondence control section that sets correspondence between two coordinate systems; a feature information acquisition section that acquires feature information in the image information of the extracted three-dimensional shape of the specific luminal organ; an associated image generating section that generates an image in which the feature information is associated with the image information of the three-dimensional shape of the specific luminal organ; a control section that performs control to display a piece of the feature information in the vicinity of the position information of the image pickup unit, etc.