Sterile Touchscreen Cover Assembly for Accurate Multi-Touch Input

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Solution Overview

Problem

Existing reusable medical devices, such as touchscreens, pose a challenge in maintaining a sterile environment due to loose-fitting drapes that hinder multi-touch inputs, making it difficult to provide necessary commands during medical procedures.

Innovation Solution

A touchscreen cover assembly comprising a sterile frame and cover member that securely fits over the touchscreen, creating a sterile interface by covering the user interface and housing, allowing for multi-touch inputs while maintaining sterility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a drape is used to shield the touchscreen, then sterility is improved, but user interface interaction deteriorates

Engineering Contradiction:
ImprovesterilityVSAvoiduser interface interaction
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The drape is segmented into multiple sections: a first section covering the touchscreen display area with a cutout for the user interface, and a second section covering the housing. This segmentation allows the drape to simultaneously maintain sterility over the touchscreen while preserving access to the user interface through the strategic placement of the cutout.

Inventive Principle:
Principle #1Segmentation

2Reliability

If a loose fitting drape is used, then sterility is improved, but multi-touch input capability deteriorates

Engineering Contradiction:
ImprovesterilityVSAvoidmulti-touch input capability
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The drape exhibits different properties in different regions: the first section over the touchscreen is designed with specific tension and fit characteristics to allow multi-touch gestures, while the second section over the housing provides different coverage. The cutout in the first section is strategically positioned to maintain both sterility and touch input capability by allowing finger access while preventing contamination.

Inventive Principle:
Principle #3Local quality

3Reliability

If the drape is positioned to cover the user interface, then sterility is improved, but input accuracy deteriorates

Engineering Contradiction:
ImprovesterilityVSAvoidinput accuracy
Core Design Contradiction:
ReliabilityVSMeasurement precision

Solution Approach 1:

The drape is divided into a first section and a second section, with the first section specifically designed to cover the touchscreen display while incorporating a cutout for the user interface. This segmentation allows the drape to maintain sterility over the display area while preserving accurate touch input capability through the cutout configuration.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS12622763B2Sterile cover assembly
Publication Date: 2026.05.12 ACIST MEDICAL SYSTEMS INC
  • US12622763B2 patent drawing
  • US12622763B2 patent drawing
  • US12622763B2 patent drawing

AI summary

A touchscreen cover assembly embodiment is configured to create a sterile interface between a touchscreen and a user and includes a sterile frame and a sterile cover member. The sterile frame includes a forward frame surface and a rearward frame surface opposite the forward frame surface. The sterile frame defines an interior opening, and the sterile frame is configured to be secured to the touchscreen such that the rearward frame surface faces the touchscreen and the interior opening is aligned with a user interface of the touchscreen. The sterile cover member includes a forward cover portion and a rearward cover portion. The sterile cover member is configured to be secured to the touchscreen by the sterile frame such that the forward cover portion is positioned between the interior opening and the user interface of the touchscreen and the rearward cover portion is positioned over a housing of the touchscreen.