Self-locking Blood Pressure Cuff with Segmented Buckle Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing blood pressure cuffs are inconvenient for one-handed operation, making self-measurement difficult for users.
Innovation Solution
A self-locking blood pressure cuff design featuring a cuff belt with a self-locking structure, including a core shaft, locking assemblies, pressing assemblies, and a loosening assembly, which allows for secure wrapping and easy release around the body, enabling one-handed operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a Velcro tape fixing mechanism is used in the blood pressure cuff, then the cuff can be secured around the body, but one-handed operation becomes inconvenient or difficult
Solution Approach 1:
The fixing mechanism is divided into separate components: a buckle assembly with a hook structure and a strap with a loop structure. This segmentation allows the user to easily engage the buckle with one hand while the strap can be adjusted and secured independently, solving the difficulty of one-handed operation while maintaining secure fixation.
Solution Approach 2:
Instead of using a traditional Velcro tape where both ends need to be manipulated simultaneously, the invention inverts the approach by using a buckle-strap system where the buckle remains fixed and the strap is inserted through and secured. This inversion simplifies the operation to a single-handed action of inserting and buckling the strap.
2Adaptability or versatility
If a traditional Velcro tape mechanism is used, then the cuff can be adjusted to fit, but the adjustment and securing process requires two hands
Solution Approach 1:
The adjustment mechanism is segmented into a fixed buckle and a movable strap with multiple adjustment holes. The user can easily adjust the strap length by inserting it through different holes and buckling, providing size adaptability while requiring minimal hand coordination - essentially one-handed operation.
Solution Approach 2:
The buckle-strap mechanism is designed to be self-adjusting. Once the strap is inserted through the buckle, it automatically secures itself without requiring the user to manually fasten both ends simultaneously. The strap's own structure enables the adjustment and securing function with minimal user intervention.
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
Enables secure and convenient one-handed operation of the cuff for blood pressure measurement without affecting the accuracy of the readings.
Implementation Method 1
a first torsion spring disposed between the gear and the second casing, the first torsion spring applying a force on the gear
Implementation Method 2
a second torsion spring applied a force on the pressing assembly to rotate the pressing assembly in the second direction
Data Source
AI summary
A convenient self-locking blood pressure cuff facilitating one-handed use by a user taking his own blood pressure includes a cuff belt, a casing assembly, and a self-locking structure. The self-locking structure is received in the casing assembly. The self-locking structure includes a core shaft, a locking assembly, and a pressing assembly. The core shaft is slidably connected to the casing assembly. The locking assembly and the pressing assembly are wrapped around the core shaft. The locking assembly can rotate when a free end of the cuff belt moves with respect to the casing assembly. The locking assembly can further press against the cuff belt when the core shaft slides in the casing assembly. The pressing assembly presses against the locking assembly to prevent the locking assembly from rotating back.