Neurostimulation Arrangement With Insertion Aid Lumen

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Solution Overview

Problem

Existing medical arrangements for electrical neurostimulation are complex and lack versatility, as they often require separate devices for neurostimulation and local anaesthetic delivery.

Innovation Solution

A medical arrangement comprising an insertion aid with a lumen and a stimulator with a distal electrode, allowing for transfer between configurations for neurostimulation and local anaesthetic delivery, thereby simplifying the design and enhancing functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single device is used for both neurostimulation and local anaesthetic delivery, then device versatility is improved, but device complexity increases

Engineering Contradiction:
Improvedevice versatilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The insertion aid is designed with a lumen that can accommodate both a stimulator shaft for neurostimulation and a catheter for local anaesthetic delivery. This multi-functional design allows a single device to serve multiple purposes, improving versatility while managing complexity through shared structural components.

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

Solution Approach 2:

The system is divided into separable components: the insertion aid acts as a separate insertion tool that can be removed after use, while the stimulator and catheter are distinct functional elements that can be independently selected and inserted. This segmentation allows for simplified design of individual components while maintaining overall system versatility.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If the stimulator shaft is inserted through the insertion aid lumen, then ease of insertion is improved, but the insertion aid structure becomes more complex

Engineering Contradiction:
Improveease of insertionVSAvoidinsertion aid structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The stimulator shaft is designed to be inserted nested within the lumen of the insertion aid, similar to a doll inside a larger doll. This nesting arrangement allows the insertion aid to guide and protect the stimulator during insertion while maintaining a relatively simple overall structure, as the insertion aid serves as a reusable guide rather than an integrated complex assembly.

Inventive Principle:
Principle #7Nested doll (Nesting)

3Adaptability or versatility

If the insertion aid is used as a capillary for local anaesthetic delivery, then functional versatility is improved, but device complexity increases

Engineering Contradiction:
Improvefunctional versatilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The insertion aid's lumen is designed to serve dual purposes: guiding the stimulator shaft during neurostimulation procedures and delivering local anaesthetic when a catheter is inserted. This universal design approach improves functional versatility by allowing one device to perform multiple functions, while the complexity increase is managed through a simple tubular structure that accommodates different functional elements.

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

Data Source

PatentUS20250144428A1Medical arrangement for electrical neurostimulation
Publication Date: 2025.05.08 B BRAUN MELSUNGEN AG
  • US20250144428A1 patent drawing
  • US20250144428A1 patent drawing
  • US20250144428A1 patent drawing

AI summary

A medical arrangement for electrical neurostimulation includes an insertion aid with an insertion shaft which has a proximal end, a distal end and a lumen longitudinally extended between the proximal end and the distal end, a stimulator with a stimulator shaft which has a distal stimulator end with a stimulation electrode designed to deliver electric current pulses, and which has an electrical conductor, the distal end of which forms the stimulation electrode or is connected to the stimulation electrode. The arrangement is transferable between first and second configurations. In the first configuration, the stimulator shaft is inserted into the lumen via the proximal end of the insertion shaft and the distal stimulator end protrudes beyond the distal end. In the second configuration, the stimulator shaft is proximally pulled out of the lumen of the insertion shaft and the insertion aid and the stimulator are separated from one another.