Prefillable Injection Device Needle Guard Shielding

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Solution Overview

Problem

Current prefilled injection devices lack affordability, ease of use, and effective needle shielding, leading to patient anxiety and potential needle stick injuries.

Innovation Solution

Design of a prefillable injection device with a housing, drug reservoir, needle guard, and collapsible needle shield, which provides passive needle shielding and a breakable seal to prevent accidental exposure, ensuring safe and easy administration of medicaments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If traditional prefilled injection devices are used, then medicament delivery is efficient, but patient anxiety increases and needle stick injury risk remains due to visible needles

Engineering Contradiction:

Improvepatient anxiety and needle stick injury riskVSAvoiddevice structure

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The needle shield is nested within the needle guard, creating a layered protective structure. The needle guard forms an outer protective barrier while the needle shield provides an inner protective layer, both containing the needle in different states (extended and retracted) to eliminate visible needle exposure and prevent injuries

Inventive Principle:

Principle #7Nested doll (Nesting)

2Object-affected harmful factors

If needle caps are used for shielding, then needle protection is provided, but accidental finger pricks occur during cap replacement

Engineering Contradiction:

Improveaccidental finger pricksVSAvoidoperation safety

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The needle is extracted from direct exposure by being contained within the needle guard and needle shield structures. The needle guard acts as a permanent protective enclosure that is integrated into the device, eliminating the need for separate removable caps that require handling and replacement, thereby preventing accidental finger pricks during cap replacement operations

Inventive Principle:

Principle #2Taking out (Extraction)

3Reliability

If breakable seals are implemented, then single-use safety is ensured, but manufacturing complexity increases

Engineering Contradiction:

Improvesingle-use safetyVSAvoidmanufacturing process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The breakable seal is pre-installed and positioned between the needle guard and needle shield during manufacturing. This preliminary placement ensures that the seal is already in position before the device reaches the user, simplifying the manufacturing process while ensuring that the seal will break upon activation to confirm single-use safety

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS11771842B2Syringes, syringe containers, kits and methods of use

Publication Date: 2023.10.03 MEDICINES360

AI summary

An injection devices and methods of use are disclosed. The injection devices can be single use disposable injection devices. The injection devices can be pre-loaded with a medicament or be configured to receive a fluid delivery assembly within an aperture. The injection devices are also configurable to communicate with an electronic device and/or a central location.