Safety Needle Housing With Flap Securing Element
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Solution Overview
Problem
Existing safety needle systems are not cost-efficient in production and do not provide secure protection against needle tip injuries for healthcare staff, especially after use when the needle is blood contaminated.
Innovation Solution
A safety device comprising a housing with a channel for the needle stem and a closing device that includes a protection flap and a securing element. The protection flap moves into a first position to close the distal opening of the housing when the needle tip is inside the channel, and the securing element prevents unintentional movement or deformation of the protection flap, ensuring the needle tip remains protected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protection flap is used to close the distal opening, then protection against needle tip injuries is improved, but the device complexity increases
Solution Approach 1:
The protection flap is implemented as a flexible, thin-walled component that can elastically deform to cover the distal opening of the housing. This flexible structure provides reliable protection while maintaining simplicity in design and manufacturing, avoiding the need for complex rigid mechanisms.
2Reliability
If a securing element is added to block movement of the protection flap, then reliability of protection is improved, but manufacturing cost increases
Solution Approach 1:
The closing device is segmented into two functional components: a protection flap for covering the opening and a securing element for preventing unintended movement. This segmentation allows each component to be optimized independently and manufactured separately using simple, cost-effective processes, while together they provide reliable protection.
3Ease of operation
If the housing is designed to slide over the needle stem, then ease of operation is improved, but the device complexity increases
Solution Approach 1:
The housing is designed with a sliding mechanism that allows it to move dynamically along the needle stem during use. This dynamic design enables easy operation - the housing can be positioned over the needle before use and locked in place, providing user-friendly operation without requiring complex locking mechanisms or multiple components.
Data Source
AI summary
A safety needle system includes a needle and a safety device. The safety device includes a housing having a channel. A stem of the needle can pass through the channel. The housing can slide over the stem such that the needle is moveable relative to the housing between a first position, in which the needle tip protrudes from the housing, and a second position, in which the needle tip is inside the channel. A closing device can close a distal opening of the housing when the needle is in the second position. The closing device includes a protection flap that closes the distal opening when the protection flap is in a first flap position. The closing device also includes a securing element configured to block movement or deformation of the protection flap out of the first flap position towards the inside of the channel.