NPWT Pump Assembly Automatic Dressing Detection

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Solution Overview

Problem

Existing medical devices, particularly those used for negative pressure wound therapy (NPWT), have complex user interfaces that make it difficult for users to set or control the operation of the devices effectively.

Innovation Solution

The development of a negative pressure wound therapy system that includes a pump assembly adaptable for use in both canister and canisterless modes, with a user interface that automatically adjusts operational parameters based on the type of wound dressing connected, simplifying the activation and operation of the medical device.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a complex user interface is provided to allow users to set or control the operation of the medical device, then the device can provide customized therapy settings, but the ease of operation deteriorates making it difficult for users to select the correct settings

Engineering Contradiction:

Improvecustomized therapy settingsVSAvoidease of operation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The pump assembly automatically detects the type of wound dressing connected (canister-mode or canisterless-mode) and autonomously selects the appropriate operational parameters without requiring user intervention. The system serves itself by using the physical connection state to trigger automatic configuration, eliminating the need for users to navigate complex interfaces.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The system performs preliminary detection of the wound dressing type upon connection and pre-configures the operational parameters before therapy begins. This advance preparation ensures that the correct settings are automatically in place, eliminating the need for users to manually select from multiple options.

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If the pump assembly is designed to work with both canister-mode and canisterless-mode wound dressings, then the adaptability improves, but the device complexity increases due to multiple flowpaths and modes

Engineering Contradiction:

ImproveadaptabilityVSAvoiddevice complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The pump assembly is designed as a universal device that can operate with two different types of wound dressings (canister-mode and canisterless-mode) using the same pump mechanism. The single pump assembly performs multiple functions by switching between different flowpaths based on the connected dressing type, eliminating the need for separate pump assemblies for each mode.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system segments the flowpath into distinct routes (first flowpath for canister-mode, second flowpath for canisterless-mode) that are selectively activated based on the connected dressing type. This segmentation allows the complex multi-mode functionality to be managed through clear, separate pathways rather than a single complex integrated system.

Inventive Principle:

Principle #1Segmentation

3Ease of operation

If automatic detection of wound dressing type is implemented, then the ease of operation improves, but the device complexity increases due to additional sensors and control logic

Engineering Contradiction:

Improveease of operationVSAvoiddevice complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The connector serves as an intermediary element that physically indicates the wound dressing type to the pump assembly. Instead of requiring complex electronic sensors, the mechanical connector configuration acts as a mediator that translates the physical connection state into operational mode selection, simplifying the detection mechanism.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system uses feedback from the physical connection state of the wound dressing to automatically adjust the pump assembly's operational parameters. The detection of the dressing type provides feedback that triggers the appropriate flowpath activation and parameter configuration, creating a closed-loop system that self-adjusts without user input.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250152800A1Negative pressure wound therapy apparatuses and methods for using the same

Publication Date: 2025.05.15 T J SMITH & NEPHEW

AI summary

Embodiments of negative pressure wound therapy systems, apparatuses, and methods for operating the systems and apparatuses are disclosed. In some embodiments, a medical device is configured to detect an identity of a patient-contacting disposable connected to the medical device. The medical device automatically modifies one or more operational parameters of the medical device based on the identity of the patient-contacting disposable connected to the medical device. The medical device can include a user interface and modify automatically available selections in the user interface based on the identity of the patient-contacting disposable connected to the medical device.