Inflatable Vest Stethoscope Layout for Remote Respiratory Assessment

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Solution Overview

Problem

Challenges exist in performing accurate respiratory assessments during telehealth visits due to the lack of conventional stethoscope technology in remote diagnostic systems, making it difficult for physicians to listen to lung sounds and heart sounds of home patients.

Innovation Solution

An inflatable vest equipped with stethoscope listening devices and microphones that amplify sound, connected via tubing to a USB port or wireless transmission, allowing for remote respiratory assessments using a smartphone application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional stethoscope technology is used during telehealth visits, then physicians can accurately listen to lung sounds and heart sounds, but the device complexity and manufacturing cost increase

Engineering Contradiction:
Improverespiratory assessment accuracyVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The stethoscope bell is nested within a recess in the inflatable liner, allowing the listening device to be integrated into the vest structure. This nesting approach enables accurate sound collection while maintaining a compact, wearable design that reduces overall device complexity

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent combines multiple functions into a single integrated vest system: the inflatable liner provides both patient comfort/positioning and houses the stethoscope recess, while the microphone captures sounds from the stethoscope. This merging of functions reduces the number of separate components needed

Inventive Principle:
Principle #5Merging (Combining)

2Measurement precision

If conventional stethoscope technology is used during telehealth visits, then physicians can perform accurate respiratory assessments, but manufacturing cost increases

Engineering Contradiction:
Improverespiratory assessment accuracyVSAvoidmanufacturing cost
Core Design Contradiction:
Measurement precisionVSEase of manufacture

Solution Approach 1:

The inflatable liner acts as a flexible shell that integrates the stethoscope recess and provides a compliant interface with the patient's back. This flexible membrane approach is simpler and more cost-effective to manufacture than rigid stethoscope mounting structures, while still enabling accurate sound transmission

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent uses a simplified digital copy approach by capturing acoustic signals through microphones and transmitting them electronically to remote physicians. This digital signal copying eliminates the need for complex analog stethoscope mechanisms at the remote end, reducing manufacturing costs

Inventive Principle:
Principle #26Copying

3Adaptability or versatility

If multiple stethoscopes are positioned at different locations on the vest, then comprehensive respiratory assessment is enabled, but device complexity increases

Engineering Contradiction:
Improverespiratory assessment coverageVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The vest is segmented into multiple zones with stethoscope recesses positioned at different locations (e.g., upper back, lower back, sides) to capture sounds from different lung and heart regions. This segmentation enables comprehensive assessment while keeping each individual recess simple in structure

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The inflatable liner serves multiple functions: it provides patient comfort through gentle inflation, positions the stethoscope bells correctly against the body, and houses the recesses for multiple listening positions. This multi-functionality reduces the need for separate positioning mechanisms

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 accurate respiratory assessments by pressing stethoscopes against the patient's back, amplifying sounds, and transmitting them remotely for diagnosis, facilitating easy use and low-cost manufacturing.

Implementation Method 1

when the at least one stethoscope is recessed into the at least one stethoscope recess, and the inflatable vest is worn by a patient, and the inflatable bladder is inflated, the diaphragm of the at least one stethoscope is pressed against the back of the patient

Methodology Applied
Scientific EffectPressure: Pressure Increase

Implementation Method 2

Tubing near the stethoscope device or devices can contain small microphones to amplify sound to conductor relays

Methodology Applied
Scientific EffectSound amplification: Sound

Data Source

PatentEP4192356B1Inflatable vest for respiratory assessment
Publication Date: 2026.02.18 FRESENIUS MEDICAL CARE HOLDINGS INC
  • EP4192356B1 patent drawingFigure 1
  • EP4192356B1 patent drawingFigure 2~3
  • EP4192356B1 patent drawingFigure 4A

AI summary

A lightweight inflatable vest is provided with embedded listening devices. Once inflated, the vest enables a physician to hear amplified lung sounds and heart beats and rhythms of a patient wearing the vest, via connection to a smart phone application, through a patient portal, or the like. By using the device on a patient, a physician is provided with an accurate way to perform a respiratory and heart health assessment of the patient during a telehealth visit.