Integrated Cuff Unit for Blood Pressure Measurement Alignment

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Solution Overview

Problem

Blood pressure measuring devices with a configuration where a pressing cuff and a sensing cuff are layered and disposed on a curler often experience positional deviation, leading to decreased accuracy in blood pressure measurements due to misalignment.

Innovation Solution

A cuff unit is designed with a pressing cuff and a sensing cuff, where the sensing cuff includes a joining margin that integrates with the pressing cuff, allowing them to be fixed as a single unit to the curler, reducing positional deviation and preventing wrinkles that inhibit inflation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If the pressing cuff and sensing cuff are separately joined to the curler, then the device complexity is reduced, but positional deviation occurs in each cuff with respect to the curler

Engineering Contradiction:

Improvejoining process complexityVSAvoidpositional alignment precision

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The pressing cuff and sensing cuff are merged into a single integrated cuff unit where the pressing cuff is joined to the inner circumferential surface of the curler and the sensing cuff is joined to the outer circumferential surface of the curler as one assembly. This merging ensures that both cuffs maintain fixed relative positions to each other and to the curler, eliminating positional deviation that would occur if they were joined separately.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If the pressing cuff and sensing cuff are layered and disposed on the curler, then the blood pressure measurement function is achieved, but positional deviation increases the possibility of misalignment

Engineering Contradiction:

Improveblood pressure measurement reliabilityVSAvoidcuff positioning precision

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The pressing cuff and sensing cuff are combined into an integrated cuff unit with the curler, where the pressing cuff is joined to the inner circumferential surface and the sensing cuff is joined to the outer circumferential surface. This integration ensures fixed relative positioning and eliminates misalignment, directly improving measurement reliability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The cuff unit is pre-assembled and pre-positioned on the curler during manufacturing, with the pressing cuff and sensing cuff joined in a predetermined configuration. This preliminary assembly ensures that when the device is used, the cuffs are already in the correct relative positions, eliminating positioning errors during actual measurement.

Inventive Principle:

Principle #10Preliminary action

3Ease of manufacture

If the pressing cuff and sensing cuff are joined separately to the curler, then the manufacturing process is simpler, but wrinkles may form inhibiting inflation

Engineering Contradiction:

Improvejoining process simplicityVSAvoidwrinkles inhibiting inflation

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The pressing cuff and sensing cuff are merged into a single integrated cuff unit that is joined to the curler as one assembly. This merging eliminates wrinkles that would form between separately joined cuffs, ensuring smooth surfaces that allow proper inflation of both the pressing cuff and sensing cuff.

Inventive Principle:

Principle #5Merging (Combining)

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 integrated cuff unit minimizes positional deviation and wrinkles, enhancing the accuracy of blood pressure measurements by ensuring proper alignment and inflation of the cuffs.

Implementation Method 1

The pressing cuff includes a plurality of first bag-like structures. The plurality of first bag-like structures are layered and each inflated by a fluid.

Methodology Applied

Scientific EffectInflation by fluid:

Implementation Method 2

a sensing cuff is inflated in a direction in which blood vessels are occluded

Methodology Applied

Scientific EffectCompression: Compression

Implementation Method 3

a sensing cuff is inflated in a direction in which blood vessels are occluded

Methodology Applied

Scientific EffectCompression: Compression

Data Source

PatentUS20220000379A1Cuff unit, method for manufacturing cuff unit, and blood pressure measuring device

Publication Date: 2022.01.06 OMRON HEALTHCARE CO LTD

AI summary

A cuff unit, a method for manufacturing the cuff unit, and a blood pressure measuring device that allow suppressing a positional deviation in each of a pressing cuff and a sensing cuff with respect to a curler are provided. A cuff unit includes a pressing cuff joined to a curler and including a plurality of air bags that are layered and each inflated by a fluid, and a sensing cuff that includes one air bag inflated by a fluid and a joining margin formed on the air bag and joined to the air bag 81 adjacent to the air bag.