Tapered Attachment Tape for Pulse Photometry Probe Stability
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Solution Overview
Problem
Conventional pulse photometry probes, such as pulse oximetry probes, tend to detach from tissues like fingers due to a large contact area with lateral faces when objects like hands or feet collide, causing them to move or come off.
Innovation Solution
An attachment tape with a gradually narrowing width dimension along its longitudinal direction, featuring a light emitter and detector, is designed to securely wrap around tissues, incorporating a double-sided tape, hook-and-loop fastener, sponge layer, and anti-slip layer to prevent detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the width dimension of the sensor is constant along the longitudinal direction, then the sensor structure is simple and easy to manufacture, but the contact area with hitting objects is large causing the sensor to move or detach
Solution Approach 1:
The attachment tape employs an asymmetric width design where the width dimension gradually decreases from the base end toward the distal end. This asymmetric geometry creates a tapered profile that reduces the contact area at the distal end, minimizing the impact area when objects collide with the sensor, thereby preventing detachment while maintaining structural feasibility
Solution Approach 2:
Different sections of the attachment tape have different width dimensions to serve different functions. The base end has a larger width for secure attachment and structural support, while the distal end has a gradually reduced width to minimize contact area with hitting objects. This local variation in geometric quality optimizes both attachment stability and collision resistance
2Reliability
If the width dimension is gradually narrowed, then the contact area with hitting objects is reduced preventing detachment, but the sensor structure becomes more complex
Solution Approach 1:
The asymmetric tapered width design is implemented through standard manufacturing processes for flexible circuits and tapes. The gradual narrowing can be achieved through conventional cutting, molding, or lamination techniques, making the asymmetric geometry manufacturable without requiring complex multi-step processes or specialized equipment
Data Source
AI summary
An attachment tape is configured such that a light emitter and a light detector are mounted on the attachment tape and such that the attachment tape is wrapped around a tissue so as to be attached to the tissue. The light emitter is configured to emit light. The light detector is configured to detect the light emitted from the light emitter. A width dimension of the attachment tape is gradually narrowed from one point along a longitudinal direction of the attachment tape toward another point at a distal end of the attachment tape.