Reusable Safety Syringe Training Device Mechanism
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Solution Overview
Problem
Current prefilled syringes with safety devices are expensive and not reusable, making them unsuitable for training and practice due to their single-use nature, which is a barrier for effective needle stick protection education and training.
Innovation Solution
A reusable safety syringe device designed for training and practice, comprising a first tubular member with a spring housing, a second tubular member, a syringe, and a plunger, featuring release latches and visual cues for proper operation, allowing for simulated injections and safe needle containment, enabling multiple uses without the need for costly placebo syringes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If prefilled syringes with safety devices are used for training, then training realism and safety protection are improved, but cost increases and reusability is lost
Solution Approach 1:
The patent creates a simplified copy of the safety syringe mechanism using inexpensive materials. The training device replicates the essential safety function (needle containment) and operational steps (injection simulation, safety deployment) without using actual drugs or expensive components, making it suitable for repeated training use.
Solution Approach 2:
The patent designs a training device that intentionally uses cheap, disposable-like components (plastic tubular members, spring, latches) that can be easily replaced. This allows the training device to be used once and discarded, or reused multiple times at low cost, eliminating the need to preserve expensive medicinal syringes for training purposes.
2Reliability
If prefilled syringes with safety devices are used for training, then training realism is improved, but reusability deteriorates
Solution Approach 1:
The patent creates a simplified copy of the safety syringe mechanism using inexpensive materials. The training device replicates the essential safety function (needle containment) and operational steps (injection simulation, safety deployment) without using actual drugs or expensive components, making it suitable for repeated training use.
Solution Approach 2:
The training device incorporates dynamic elements including a movable plunger, spring-loaded safety mechanism, and movable latches that engage and disengage. These dynamic components allow the device to be reset and reused multiple times, unlike static single-use syringes, while maintaining training realism through realistic movement and feedback.
3Reliability
If expensive placebo syringes are used for training, then training quality is improved, but cost decreases slightly (compared to real syringes) but reusability is still lost
Solution Approach 1:
The patent creates a simplified copy of the safety syringe mechanism using inexpensive materials. The training device replicates the essential safety function (needle containment) and operational steps (injection simulation, safety deployment) without using actual drugs or expensive components, making it suitable for repeated training use.
Solution Approach 2:
The training device is designed to be easily disassembled and reassembled. Components such as the plunger, spring, and latches can be recovered and reused, and if damage occurs, individual parts can be replaced rather than discarding the entire device, thereby extending the usable life and improving reusability.
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
The device provides a cost-effective, reusable training tool that mimics the operation of a safety syringe, allowing for safe and repeated practice of needle insertion and withdrawal, enhancing training efficacy while preventing needle exposure.
Implementation Method 1
a spring sufficient to push the second tubular member upward to a position that contains the needle within the body portion
Data Source
AI summary
A reusable safety syringe training device is provided. The device comprises a syringe contained within a syringe protective member. The syringe protective member is movable vertically within an outer protective sheath from a first position to a second position and back to the first position. In the first position, the device is in an injection-ready position with the needle exposed and the syringe protective member in a locked vertical position with respect to the outer protective sheath. In the second position, the device is in a post-injection position such that the syringe protective member is no longer vertically locked with respect to the outer protective sheath and has moved vertically upward thereby rendering the needle within the outer protective sheath. The plunger carries a release flange sufficient to engage release latches that otherwise retain the syringe protective member in the first position. The release flange engages that release latches when the user pushes the plunger down to effectuate the injection. Once pressure is removed from the plunger after the injection has concluded, a springe mechanism drives the syringe protective member upwards to the second position. The user can then turn the plunger such that the release flange is no longer able to engage the release latches and push the plunger back down to lock the syringe protective member in its first position. The user is then able to pull the plunger back up while the syringe protective member remains locked, turn the plunger back to a position where the release flange is in a position to engage the release latches again, and perform another injection.