Fluorescent Indwelling Clip for Stable Hollow-Organ Attachment
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Solution Overview
Problem
Existing surgical markers for hollow organs face challenges in providing stable attachment and effective visual recognition of light emission due to complexity, power requirements, and fluorescence attenuation, particularly when using LED illuminants or fluorescent luminescent substances.
Innovation Solution
An indwelling clip with a pair of arm plate portions, claw portions, and a fastening ring, where at least one arm plate portion contains a fluorescent pigment that emits red or near-infrared light, allowing for stable attachment to the hollow organ inner wall and minimizing fluorescence attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a resin material containing a fluorescent pigment is used for the tubular member, then fluorescence emission is achieved, but fastening stability deteriorates and attachment reliability decreases
Solution Approach 1:
The clip is divided into distinct functional components: the arm plate portions (made of resin with fluorescent pigment for visibility) and the fastening ring (made of metal for secure attachment). This segmentation allows each component to optimize its material properties for its specific function without compromise.
Solution Approach 2:
The invention merges two different material systems (resin with fluorescent pigment and metal) into a single integrated clip structure. The resin arm plates provide fluorescence while the metal fastening ring provides secure attachment, combining the benefits of both materials in one device.
2Illumination intensity
If an LED is used as an illuminant, then bright light emission is achieved, but device complexity increases and compactness deteriorates
Solution Approach 1:
The fluorescent pigment in the resin arm plates serves its own function of light emission without requiring external power sources, control circuits, or additional components. The material itself generates the necessary illumination through fluorescence when excited by external light sources.
Solution Approach 2:
The invention uses passive fluorescent materials that do not require complex electronic components, power supplies, or active control systems. This simplifies the device to its essential function of light emission through material properties rather than complex systems.
3Use of energy by moving object
If fluorescence emission is used for marker visibility, then power supply is eliminated, but fluorescence intensity to the outside becomes too weak for practical recognition
Solution Approach 1:
The fluorescent pigment is concentrated in the arm plate portions that are in direct contact with or near the hollow organ inner wall. This local concentration of fluorescent material at the critical interface maximizes the efficiency of light conversion and ensures sufficient emission intensity where it is most needed for external observation.
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 clip enables easy visual recognition of light emission from the outside of the hollow organ, with improved attachment stability and reduced fluorescence attenuation, facilitating accurate lesion identification during surgeries.
Implementation Method 1
at least one of the arm plate portions is provided with a fluorescent body containing a fluorescent pigment emitting red or near infrared light by being irradiated with excitation light
Data Source
AI summary
An indwelling clip includes a pair of arm plate portions that can be opened in a substantially V shape with an elastic force and claw portions formed on respective tip portions of the arm plate portions. The indwelling clip also includes a fastening ring attached to the arm plate portions so as to be movable along a longitudinal direction of the pair of arm plate portions and be able to close the pair of arm plate portions by moving in a direction toward the claw portions. The arm plate portion is provided with a fluorescent body containing a fluorescent pigment emitting red or near infrared light by being irradiated with excitation light. According to some embodiments, the indwelling clip allows easy visual recognition of light emission of a fluorescent body from the outside of a hollow organ and enables excellent attachment stability to the inner wall of the hollow organ.