Blood Pressure Cuff Hook-and-Loop Fastening Segmentation
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Solution Overview
Problem
Conventional blood pressure measuring cuffs using the linear inflating scheme experience loosening due to shearing forces, leading to noise interference in measurements and reduced accuracy, and are cumbersome to attach and detach, especially in emergency situations.
Innovation Solution
A blood pressure measuring cuff with a belt-like body featuring a first hook surface and a second hook surface on opposite sides, which mutually fix each other when wrapped around the patient, providing enhanced resistance to shearing forces and simplifying attachment and detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a linear inflating scheme is used to reduce maximum cuff pressure, then the load on the patient's arm is reduced, but the cuff loosens due to shearing forces acting on the hook-and-loop fastener
Solution Approach 1:
The single fastening system is segmented into multiple independent hook-and-loop fastener sections arranged circumferentially around the cuff. This segmentation distributes the shearing force across multiple attachment points, preventing the cumulative loosening effect that occurs with a single fastening point under linear inflation pressure.
Solution Approach 2:
Multiple hook-and-loop fastener sections are combined to work together as a unified fastening system. The cumulative effect of multiple attachment points creates a more robust fixation that resists the shearing forces generated during linear cuff inflation, while still allowing the cuff to maintain reduced pressure on the patient's arm.
2Reliability
If conventional fastening mechanisms are used, then the cuff can be secured, but the cuff becomes tangled with wirings and is difficult to attach and detach quickly
Solution Approach 1:
The fastening system is divided into multiple modular hook-and-loop sections that can be independently engaged and disengaged. This allows the cuff to be quickly attached by simply wrapping it around the arm and pressing the fasteners together, and equally quickly detached by pulling apart, without the complexity of threading belts through bases or manipulating single-point fasteners.
Solution Approach 2:
The hook-and-loop fastener design allows the cuff to self-fasten through a simple pressing motion without requiring threading, tying, or complex manipulation. The self-adhering nature of the fasteners enables rapid attachment and detachment by anyone, even under emergency conditions, eliminating the need for specialized fastening procedures.
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 cuff effectively prevents loosening, maintains measurement accuracy, and reduces the physical burden on patients by minimizing unnecessary cuff pressure and allowing for quicker blood pressure measurements.
Implementation Method 1
The first hook surface is provided on one surface of the body and has a hook structure. The second hook surface is provided on another surface of the body and has a hook structure. When the body is configured to wrap around the blood pressure measuring site of the patient, the first hook surface and the second hook surface mutually fix each other.
Data Source
AI summary
A blood pressure measuring cuff includes: a belt-like body wrapped around a blood pressure measuring site of a patient; a hook surface provided on one surface of the body and having a hook structure; and a hook surface provided on the other surface of the body and having a hook structure. When the body is wrapped around the blood pressure measuring site of the patient, the hook surface and the hook surface mutually fix each other.