Optical Measuring System Arc Path Magnification
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Solution Overview
Problem
Conventional optical measuring systems struggle with accuracy when measuring small differences in distance, are cumbersome due to metal construction, and lack simplicity in operation, making them inconvenient for precise surgical procedures.
Innovation Solution
An optical measuring apparatus with a seat, movable abutting member, static and dynamic optical sensing elements, where the dynamic sensing element moves along an arc path to change the optical sensing distance, allowing for greater displacement measurement accuracy, and an optical tracker with an axial measuring device to measure both diameter and length, utilizing a lightweight medical material for reduced physician burden.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional optical measuring apparatus uses displacement of optical sensing elements to detect objects, then it can measure different specifications of surgical instruments, but the accuracy is not enough to obtain correct positions when small distance differences are measured
Solution Approach 1:
The patent transforms the one-dimensional linear displacement measurement into a two-dimensional arc path measurement. The dynamic optical sensing element moves along an arc path rather than a straight line, creating a magnified displacement effect where small changes in object diameter produce larger changes in optical sensing distance, thereby improving measurement accuracy without proportionally increasing device complexity
Solution Approach 2:
The patent changes the geometric parameter of the sensing element's motion path from linear to arc-shaped. By positioning the dynamic optical sensing element on a pivotally connected movable abutting member that rotates about a point, the sensing element traces an arc path, transforming the measurement parameter from direct linear displacement to magnified arc displacement, which enhances sensitivity to small diameter changes
2Ease of operation
If conventional optical measuring apparatus is made of metal with certain weight and volume, then it has structural strength, but this increases the difficulty and inconvenience of measurement in surgical procedure and operating burden on physician
Solution Approach 1:
The patent replaces traditional rigid metal construction with a lightweight structure that can be made from materials such as medical-grade polymers or composite materials. The movable abutting member and seat form a lightweight mechanical assembly that maintains sufficient structural strength while dramatically reducing weight, making the apparatus easier to handle and operate during surgical procedures
Solution Approach 2:
The patent introduces dynamic elements including the pivotally connected movable abutting member that can rotate to accommodate objects of different specifications. This dynamic mechanism allows the apparatus to adapt to various measurement scenarios without requiring heavy reinforcement, maintaining ease of operation while providing versatility for measuring different surgical instrument dimensions
3Measurement precision
If dynamic optical sensing element moves along arc path to magnify displacement, then measurement accuracy is improved, but device structure becomes more complex
Solution Approach 1:
The patent merges the functions of the movable abutting member and the dynamic optical sensing element into a single integrated assembly. The sensing element is positioned on the movable abutting member itself, so that the rotation of the abutting member directly drives the arc path motion of the sensing element. This integration simplifies the mechanical structure by eliminating separate actuation mechanisms while achieving the desired magnified displacement measurement
Data Source
AI summary
An optical measuring apparatus for magnifying displacement includes a seat, a movable abutting member, a plurality of static optical sensing elements and a dynamic optical sensing element. The seat includes a positioning groove. The movable abutting member is pivotally connected to the seat and corresponding to the positioning groove. An object is sandwiched between the movable abutting member and the positioning groove. The static optical sensing elements are disposed on the seat. The dynamic optical sensing element is disposed on the movable abutting member. There is an optical sensing distance between the dynamic optical sensing element and one of the static optical sensing elements. The dynamic optical sensing element is moved along an arc path by the movable abutting member so as to change the optical sensing distance, and a change of the optical sensing distance is greater than a change of a diameter of the object.