Body Compression Device With Spiral Adjustment for Constant Pressure
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Solution Overview
Problem
Existing devices for compressing body parts, such as the upper arm during venous blood collection, fail to maintain a constant pressure due to changes in the body's circumference, and require complex structures and additional sensors, which increase cost and complicate component replacement.
Innovation Solution
A device with a compression unit, power transmission unit, and connection unit, utilizing an elastic member and spiral-shaped power transmission module to apply a constant pressure regardless of circumference changes, without the need for sensors, and allows easy component replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a band-type device is used to compress the body part, then the device structure remains simple, but the pressure cannot remain constant when the circumference of the body part changes
Solution Approach 1:
The patent employs a dynamic adjustment mechanism where the band length is automatically adjusted in response to changes in body part circumference. The band includes a movable connection structure that allows the band to extend or contract, maintaining constant pressure despite circumference variations without requiring complex sensor systems.
Solution Approach 2:
The patent changes the physical parameter of the band (its length) dynamically to compensate for circumference changes. By allowing the band length to vary while maintaining tension, the system preserves constant pressure application without needing additional sensors or complex control mechanisms.
2Stress or pressure
If pressure sensors and adjustment mechanisms are added to maintain constant pressure, then the pressure can remain constant, but the device structure becomes complicated and component replacement becomes difficult
Solution Approach 1:
The patent extracts the pressure sensing and adjustment functions from separate components and integrates them into the band structure itself. The band's movable connection elements inherently provide both pressure application and automatic adjustment, eliminating the need for separate sensors and complex mechanisms, thereby simplifying repair and replacement.
Solution Approach 2:
The band structure performs self-adjustment through its inherent movable connection design. When the body part circumference changes, the band automatically extends or contracts through its connection mechanisms, maintaining constant pressure without external sensing or control systems, thus simplifying the overall device and easing maintenance.
3Stress or pressure
If additional sensors and adjustment mechanisms are incorporated, then constant pressure can be maintained, but the device cost increases significantly
Solution Approach 1:
The band structure serves multiple functions simultaneously: it applies compression pressure, automatically adjusts to circumference changes, and maintains constant force application. This multi-functionality is achieved through the band's integrated movable connection design, eliminating the need for separate expensive components like sensors and motors.
Solution Approach 2:
The patent employs simple, inexpensive band materials and connection elements that can be easily manufactured and replaced. The movable connection structure uses basic mechanical elements rather than expensive electronic components, reducing manufacturing costs while achieving the desired constant pressure function.
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 device maintains a constant pressure on body parts by adjusting to circumference changes using a spiral power transmission module, reducing complexity and cost, and enabling easy component replacement during procedures like blood collection.
Implementation Method 1
a compression unit (100) including an elastic member (110) configured to come into contact along a circumference of a body part
Data Source
AI summary
Disclosed herein is a device for compressing a body part according to one embodiment of the present disclosure. The device may include: a compression unit including an elastic member configured to come into contact along the circumference of a body part; a power transmission unit including a first power transmission module coupled with an actuator and configured to perform rotational movement; and a connection unit provided at one end of the power transmission unit and configured to enable the attachment and detachment of the elastic member. In this case, the compression unit may apply a constant pressure along the circumference of the body part by the first power transmission module designed in a spiral shape even when the circumference of the body part changes during a process of compressing the body part.