Ergonomic Electronic Thermometer Inverted Layout

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Solution Overview

Problem

Conventional hand-held electronic thermometers are difficult to hold and operate with one hand due to their top-heavy design, with the LCD screen positioned above the buttons, making them awkward to use.

Innovation Solution

The design features a housing with a control panel above the display screen, allowing for one-handed operation, a probe well on the backside for secure probe storage, and an ergonomic shape that accommodates the natural position of the thumb, ensuring easy access to buttons without blocking the screen.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the LCD screen is positioned above the buttons, then the display is easily visible, but the thermometer becomes top-heavy and awkward to hold

Engineering Contradiction:
Improvedisplay visibilityVSAvoidone-handed operation
Core Design Contradiction:
Illumination intensityVSEase of operation

Solution Approach 1:

The patent inverts the conventional arrangement by positioning the control panel above the display screen instead of below. This inversion repositions the heavy components (buttons and control panel) toward the top, balancing the weight distribution and allowing the user to operate the device comfortably with one hand while keeping the display visible below.

Inventive Principle:
Principle #13The other way round (Inversion)

2Illumination intensity

If the control panel is positioned below the display screen, then the display is easily viewed, but the user cannot access the buttons without blocking the screen

Engineering Contradiction:
Improvedisplay visibilityVSAvoidbutton accessibility
Core Design Contradiction:
Illumination intensityVSEase of operation

Solution Approach 1:

The patent reverses the conventional layout by placing the control panel above the display screen. This allows the user's thumb to naturally access the buttons without obstructing the display, as the thumb operates from the top while the display is positioned below for clear viewing.

Inventive Principle:
Principle #13The other way round (Inversion)

3Volume of moving object

If the probe is stored in the probe well, then the thermometer is compact, but the probe can be unintentionally removed

Engineering Contradiction:
Improvedevice compactnessVSAvoidprobe retention
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The patent incorporates a latch mechanism that automatically engages when the probe is inserted into the probe well. This preliminary anti-action prevents unintentional removal by requiring a deliberate unlatching action, thus maintaining both compact storage and reliable probe retention.

Inventive Principle:
Principle #9Preliminary anti-action

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 comfortable, balanced, and efficient one-handed use of the thermometer, with the control panel and display screen positioned for optimal accessibility, reducing muscle exertion and preventing accidental probe removal.

Implementation Method 1

Electronic temperature sensors such as thermistors or other temperature sensitive elements are contained within a tip of the probe. When the tip is placed, for example, in a patient's mouth, the tip is heated up by the patient's body and the thermistor measures the temperature of the tip

Methodology Applied
Scientific EffectThermal energy measurement: Thermistor

Data Source

PatentEP1909085B1Electronic thermometer
Publication Date: 2010.12.08 COVIDIEN AG
  • EP1909085B1 patent drawingFigure 1
  • EP1909085B1 patent drawingFigure 2
  • EP1909085B1 patent drawingFigure 3

AI summary

An electronic thermometer having ergonomic and efficiency features. The thermometer includes a display and a control panel, defined by at least one button, disposed above the display. The thermometer is easy and comfortable to hold and allows the user to operate the thermometer with one hand The thermometer holds a probe and a container of probe covers in a convenient and compact configuration A battery door is particularly constructed to avoid accidental opening A bottom of the thermometer is formed to hold the housing in an upright position when the bottom is placed one a horizontal surface