Segmented Imaging Module for Small-Diameter Catheters
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing imaging modules with solid-state image sensing devices are difficult to insert into medical instruments with small diameters due to the size of the substrate, making it challenging to accommodate them within the instrument's channel.
Innovation Solution
The imaging module design includes a first and second substrate with a signal cable in between, where the second substrate's diagonal length is less than or equal to the image-sensing device's diagonal length, allowing the module to be easily drawn into small-diameter medical instruments, with the signal cable arranged inside the second substrate's circumscribed circle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional imaging module with a large substrate is used, then the image-sensing device can be effectively incorporated, but it is difficult to smoothly insert the imaging module into the small-diameter medical instrument
Solution Approach 1:
The imaging module is divided into two separate substrates: a first substrate that holds the image-sensing device and electrical connections, and a second substrate that provides structural support and cable connections. This segmentation allows each substrate to be optimized independently, with the second substrate's diagonal length constrained to be less than or equal to the image-sensing device diagonal length to enable smooth insertion into small-diameter medical instruments.
2Ease of operation
If the substrate size is reduced to fit small-diameter instruments, then ease of insertion improves, but the electrical connection structure becomes more complex
Solution Approach 1:
A signal cable acts as an intermediary element connecting the first substrate (with image-sensing device) and the second substrate (with cable connections). The signal cable is arranged inside the circumscribed circle of the second substrate, and the second substrate's diagonal length is constrained to be less than or equal to the image-sensing device diagonal length. This intermediary approach simplifies the overall electrical connection structure while enabling easy insertion into small-diameter instruments.
Data Source
AI summary
An imaging module includes: an image-sensing device; a first substrate including a first insulating substrate main body; a second substrate including a second insulating substrate main body; and a signal cable disposed between the first substrate and the second substrate, that electrically connects a first cable terminal to a second cable terminal. In the imaging module, D1 is a length of a first diagonal line on a light-receiving face of the image-sensing device, D2 is a length of a second diagonal line on an end face of the second insulating substrate main body, and D2 is less than or equal to D1.