Needle Insertion Device With Motor Depth Control

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Solution Overview

Problem

Existing devices for inserting cannulas lack the ability to adjust insertion depth, which can result in undesired medication delivery due to varying body morphologies and are limited in their application for different types of injections such as subcutaneous and intramuscular injections.

Innovation Solution

A device with a movable needle support driven by an electric motor, equipped with detection means to control the depth of insertion, allowing for precise adjustment of insertion positions based on user requirements and morphological variations, using both speed and load parameters for accurate needle placement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed-depth cannula insertion device is used, then the device structure is simple, but the insertion depth cannot be adjusted for different body morphologies and injection types

Engineering Contradiction:

Improveinsertion depth adjustmentVSAvoiddevice structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The needle support is made movable relative to the bearing wall, transitioning between retracted, insertion, and post-insertion positions. This dynamic structure allows the needle insertion depth to be adjusted according to different body morphologies and injection types, resolving the contradiction between adaptability and structural simplicity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The device is designed to perform multiple functions: it can adjust insertion depth for different injection types (subcutaneous, intramuscular), and the needle support can be repositioned between retracted, insertion, and post-insertion states. This multi-functionality achieves adaptability without proportionally increasing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Manufacturing precision

If detection means and electronic control are added to control needle insertion depth, then insertion precision is improved, but device complexity increases

Engineering Contradiction:

Improveneedle insertion depth controlVSAvoidcontrol system

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

Detection means are configured to detect the position of the needle support relative to the bearing wall and provide signals to electronic means. The electronic means process these signals and control the needle support's movement, creating a feedback control loop that achieves precise insertion depth control while managing system complexity through automated control.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent replaces purely mechanical depth control mechanisms with an electronic control system that uses detection means and electronic means to manage needle insertion depth. This substitution allows for more precise control while reducing the complexity of mechanical linkages and adjustment mechanisms.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 precise control over needle insertion depth, accommodating different injection types and body morphologies, ensuring accurate medication delivery and reducing the complexity and cost of the device by utilizing a single electric motor for both insertion and product dispensing.

Implementation Method 1

an electric motor configured to move the needle support between a pre-insertion position in which the needle is retracted with respect to the bearing wall, at least one insertion position in which the needle protrudes with respect to the bearing wall, and a post-insertion position in which the needle is once again retracted with respect to the bearing wall

Methodology Applied

Scientific EffectElectromagnetic conversion: Electromagnetic Induction

Implementation Method 2

detection means configured to detect at least one parameter of the electric motor

Methodology Applied

Scientific EffectElectrical parameter detection: Ohmmeter

Data Source

PatentUS20220409810A1Device For Inserting A Needle

Publication Date: 2022.12.29 NEMERA LA VERPILLIERE SAS

AI summary

The insertion device for inserting a needle into a site having a body provided with a bearing wall for resting on the site, a needle support on which a needle is mounted, the needle support being mounted so as to be able to move relative to the bearing wall between a position before insertion, at least one insertion position, and at least one retracted position, an electric motor comprising a rotation shaft, the electric motor being intended to move the needle support in translation between the different positions of the needle support, a detection unit configured to provide a value relative to the operation of the electric motor, and an electronic unit configured to cooperate with the detection unit in order to control the depth of insertion of the needle.