Flow Path Plate Assembly With Notched Adhesive for Thin BP Monitors

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Solution Overview

Problem

Existing blood pressure measurement devices face challenges in reducing size due to the increased thickness direction caused by the spacer plate and attachment layers, leading to a larger overall device size.

Innovation Solution

A flow path plate unit is designed with integrally formed first and second flow path plates attached by an attachment member, such as double-sided tape, which forms the flow path through a notch, eliminating the need for recesses and allowing for reduced thickness and size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a spacer plate is used to form the flow path pattern, then the flow path can be formed, but the dimension in the thickness direction increases

Engineering Contradiction:

Improveflow path formationVSAvoidthickness dimension

Core Design Contradiction:

Ease of manufactureVSLength of stationary object

Solution Approach 1:

The flow path plate and attachment member are merged into a single integrated component. The attachment member includes a notch that directly forms the flow path pattern, eliminating the need for a separate spacer plate. This merging reduces the number of parts and decreases the overall thickness dimension while maintaining flow path formation capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The flow path formation function is extracted from the spacer plate and transferred to the attachment member. The notch in the attachment member serves as the flow path, separating the attachment function and flow path formation function into a single integrated structure, thereby reducing thickness.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If attachment layers are added to seal the flow path, then sealing is achieved, but the dimension in the thickness direction increases

Engineering Contradiction:

Improveflow path sealingVSAvoidthickness dimension

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The sealing function is merged with the attachment member itself. The attachment member includes sealing portions that directly seal the flow path at the interface between the flow path plate and the plate-like member. This eliminates the need for separate attachment layers, achieving sealing while reducing thickness dimension.

Inventive Principle:

Principle #5Merging (Combining)

3Strength

If the thickness direction dimension increases, then structural integrity is maintained, but the overall device size increases

Engineering Contradiction:

Improvestructural integrityVSAvoiddevice size

Core Design Contradiction:

StrengthVSVolume of stationary object

Solution Approach 1:

The flow path plate and plate-like member are designed as thin planar structures with high structural efficiency. The integrated attachment member provides sufficient structural support and sealing in a thin profile, enabling the use of thin-film structures that maintain integrity while minimizing thickness and overall device volume.

Inventive Principle:

Principle #30Flexible shells and thin films

Data Source

PatentUS12533039B2Flow path plate unit and blood pressure measurement device

Publication Date: 2026.01.27 OMRON HEALTHCARE CO LTD

AI summary

A flow path plate unit includes a first flow path plate with at least one surface being formed in a planar shape; a second flow path plate with one surface, which is opposed to the surface of the planar shape of the first flow path plate, being formed in a planar shape; and an attachment member including a notch formed in a shape of a flow path, and being configured to attach the first flow path plate and the second flow path plate.