Symmetrical Reversal System for Surgical Endoscopes
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Solution Overview
Problem
Existing surgical instruments, such as endoscopes, face challenges in achieving high resolution, brightness, and contrast while maintaining a small diameter and short length, particularly for bariatric surgical instruments.
Innovation Solution
A reversal system for surgical instruments, comprising two outer achromats and two inner achromats, arranged symmetrically to enhance optical quality, resolution, and brightness, while meeting specific diameter and length criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a small diameter and short length are used for bariatric surgical instruments, then the instrument is more suitable for minimal invasive surgery, but the optical quality and resolution deteriorate
Solution Approach 1:
The reversal system is divided into multiple discrete lens elements (first reversal lens, second reversal lens, third reversal lens, fourth reversal lens) arranged in sequence. Each lens element is optimized independently to contribute to the overall optical performance, allowing the system to achieve high resolution and brightness within a compact length constraint.
Solution Approach 2:
The patent specifies precise parameters for each lens element including focal lengths (f1, f2, f3, f4), diameters (D1, D2, D3, D4), and positions along the optical axis. By optimizing these parameters, the system achieves the desired balance between compact size and optical quality, with the reversal system length satisfying L < 15mm while maintaining resolution and brightness.
2Length of moving object
If a small diameter is used for bariatric surgical instruments, then the instrument can pass through smaller incisions, but the brightness and contrast of the image deteriorate
Solution Approach 1:
The reversal system uses multiple lens elements (first, second, third, and fourth reversal lenses) arranged in sequence along the optical axis. Each lens contributes to the light transmission path, and their combined effect restores brightness and contrast while maintaining a small overall diameter suitable for minimal invasive surgery.
Solution Approach 2:
The patent specifies precise parameters for each lens element including focal lengths (f1, f2, f3, f4), diameters (D1, D2, D3, D4), and positions along the optical axis. By optimizing these parameters, the system achieves the desired balance between compact size and optical quality, with the reversal system length satisfying L < 15mm while maintaining resolution and brightness.
3Length of moving object
If a short length is used for bariatric surgical instruments, then the instrument is more compact, but the resolution and optical performance deteriorate
Solution Approach 1:
The reversal system is divided into multiple discrete lens elements (first reversal lens, second reversal lens, third reversal lens, fourth reversal lens) arranged in sequence. Each lens element is optimized independently to contribute to the overall optical performance, allowing the system to achieve high resolution and brightness within a compact length constraint.
Solution Approach 2:
The patent specifies precise parameters for each lens element including focal lengths (f1, f2, f3, f4), diameters (D1, D2, D3, D4), and positions along the optical axis. By optimizing these parameters, the system achieves the desired balance between compact size and optical quality, with the reversal system length satisfying L < 15mm while maintaining resolution and brightness.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed reversal system significantly improves optical quality and resolution, especially at the edges, while maintaining high brightness and contrast, thus addressing the limitations of existing bariatric surgical instruments.
Implementation Method 1
a reversal system for a surgical instrument, such as an endoscope, with two outer achromats, which can be exclusive, each having, two lenses, which can be exclusive, and with two inner achromats, which can be exclusive
Implementation Method 2
the pairs with one outer achromat and one inner achromat each being arranged symmetrically with respect to one another, wherein the reversal system satisfies the following condition: L is a length of the reversal system/mm, NA is a numerical aperture, D is an (outer) diameter of the reversal system/mm, ΦRMS is the minimum RMS (Root Mean Square) spot diameter at the center/mm, which can be polychromatic
Data Source
AI summary
A reversal system for a surgical instrument including: first and second outer achromats each having, first and second lenses, and first and second inner achromats arranged between the first and second outer achromats. Each of the first and second inner achromats having first and second lenses. A first pair of the first outer achromat and the first inner achromat being arranged symmetrically with respect to a second pair of the second outer achromat and the second inner achromat.