Medical Insertion Device Guiding Mechanism

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Solution Overview

Problem

Existing medical insertion devices cause physiological and psychological distress, risk contamination, and may lead to inappropriate or incomplete administration of medical treatments due to manual force requirements and exposure of penetrating members during insertion.

Innovation Solution

A medical insertion device with a penetrating member connected to transformation means, guided by moving and stationary housing components, ensuring linear and controlled movement perpendicular to the skin surface, minimizing user interaction during insertion and reducing exposure risks through a mechanism that keeps the penetrating member hidden and secure before insertion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual force is applied towards the skin surface during insertion, then the medical device can be inserted, but physiological and psychological distress and discomfort occur

Engineering Contradiction:

Improveease of insertionVSAvoidphysiological and psychological distress

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The insertion device is designed to automatically perform the insertion action without requiring the user to apply manual force towards the skin. The device self-activates through a trigger mechanism that releases a spring-loaded or motor-driven insertion mechanism, eliminating the need for the user to physically push or press the device against the skin surface.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The manual mechanical force application is replaced by an automated mechanical system. Instead of the user directly applying force, a spring mechanism or motor system provides the insertion force, transforming the operation from manual force application to automated mechanical actuation.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If the penetrating member is exposed during insertion, then the insertion can be performed, but the risk of contamination increases

Engineering Contradiction:

Improveinsertion speedVSAvoidcontamination risk

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The penetrating member (needle) is nested within a protective sheath or housing that covers it throughout the insertion process. The needle remains enclosed within the device body until the moment of skin penetration, at which point it may extend or be deployed in a controlled manner, minimizing exposure to the external environment and reducing contamination risk.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The protective covering is already in place on the penetrating member before insertion begins. The device is prepared in advance with the needle shielded by a protective sheath or housing, ensuring that the penetrating member is protected from contamination throughout the insertion process rather than requiring post-insertion protection.

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If the penetrating member is exposed during insertion, then the insertion can be performed, but the risk of accidental exposure to contaminated material increases

Engineering Contradiction:

Improveinsertion controlVSAvoidrisk of accidental exposure

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The penetrating member is nested within a protective housing that remains closed during insertion. After insertion is complete, the housing can be opened or the needle retracted in a controlled manner, ensuring that the contaminated or used needle is not accidentally exposed to the user or environment during the procedure.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

A protective housing or sheath acts as an intermediary between the penetrating member and the external environment. This intermediate structure shields the needle during insertion and can be controlled to open or retract only after the insertion is complete, preventing accidental exposure to contaminated material.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Object-affected harmful factors

If automated insertion mechanism is used, then user distress is reduced, but device complexity increases

Engineering Contradiction:

Improveuser distressVSAvoiddevice structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The automated insertion device is segmented into distinct functional modules: a trigger activation mechanism, a spring-loaded or motor-driven insertion mechanism, a protective housing, and a needle retraction system. This segmentation allows each component to perform its specific function independently, making the overall complex system manageable through modular design and simplifying manufacturing and assembly.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS10806856B2Insertion device with horizontally moving part

Publication Date: 2020.10.20 UNOMEDICAL AS

AI summary

The invention relates to an insertion device comprising—a penetrating member (50) connected to transformation means (52), —a moving part (38) comprising guiding means (39) which guiding means (39) restrict the movement of the transformation means (52) and guide the penetrating member (50) from a first to a second position in a first direction, i.e. the direction of insertion, towards the injection site, and—a stationary housing (30) comprising guiding means (32) which guiding means (32) restrict the movement of the moving part (38). The guiding means (32) guide the moving part (38) in a second direction which is linear and different from the first direction i.e. the direction of insertion.