Blood Pressure Cuff Connection Plate Design
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Solution Overview
Problem
Conventional blood pressure measuring devices have a thick connection structure due to protrusions, which increases the device size and makes maintenance and repair difficult.
Innovation Solution
A blood pressure measuring device with a cuff featuring a bag-shaped connection portion and a connection plate with a higher bending elastic modulus than the connection portion, bonded to the device main body, allowing for a thinner design and easier connection, maintenance, and repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a connection structure with protrusions is used to connect the device main body and cuff, then the connection strength is improved, but the thickness of the connected part is increased
Solution Approach 1:
The invention extracts the protrusion structure from the connection design and replaces it with a flat connection plate. The connection plate has a bonding surface that bonds to the cuff and a connection surface that connects to the device main body, eliminating the need for protrusions while maintaining connection strength.
Solution Approach 2:
The connection plate serves as an intermediary component between the cuff and the device main body. It has different surfaces optimized for different functions: a bonding surface for bonding to the cuff and a connection surface for connecting to the device main body, thereby resolving the contradiction between connection strength and thickness.
2Reliability
If a thick connection structure is used, then the connection reliability is improved, but the device size is increased
Solution Approach 1:
The protrusion structure that increased device volume is removed. The connection plate provides a flat, thin connection interface that maintains reliability without adding excessive volume to the device.
Solution Approach 2:
The connection plate is designed as a thin component with bonding surfaces that provide reliable connection without requiring significant thickness, thereby reducing overall device volume while maintaining connection reliability.
3Reliability
If a protrusion-based connection structure is used, then the fluid-tight sealing is improved, but the manufacturing complexity is increased
Solution Approach 1:
The complex protrusion structure is replaced with a simple flat connection plate. The sealing function is achieved through the bonding surface that bonds to the cuff and the connection surface that connects to the device main body, simplifying the manufacturing process.
Solution Approach 2:
The connection structure transitions from a three-dimensional protrusion form to a two-dimensional flat plate form. This parameter change simplifies manufacturing while maintaining sealing capability through the bonding and connection surfaces.
4Length of moving object
If the connection structure is made thinner, then the device size is reduced, but the resistance to deformation and peeling is decreased
Solution Approach 1:
The connection plate has different surfaces with different properties: a bonding surface optimized for bonding to the cuff and a connection surface optimized for connecting to the device main body. This local differentiation allows the thin plate to resist deformation and peeling while maintaining small device size.
Solution Approach 2:
The connection plate may be made of a material or composite structure that provides high strength-to-thickness ratio, enabling it to resist deformation and peeling forces while maintaining a thin profile that reduces device size.
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 solution reduces the thickness of the connected part, suppresses deformation and peeling, and facilitates easy repair by using a connection plate with high rigidity, enhancing maintainability and reducing the number of components.
Implementation Method 1
the connection plate having a bending elastic modulus higher than that of the connection portion
Data Source
AI summary
The blood pressure measuring device includes a device main body configured to form a flow path of a fluid and supply the fluid, and a cuff to be wound around a living body, the cuff provided with a bag-shaped connection portion with an opening and a connection plate with a hole communicating with the opening; the connection portion formed of a sheet member; the connection plate having a bending elastic modulus higher than that of the connection portion, bonded to the connection portion and adhered to the device main body; and the cuff configured to be inflated when the fluid is supplied to an internal space of the cuff.