Frictional Retaining Means for Implant Injection Precision
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Solution Overview
Problem
Existing implant injection devices struggle to easily inject very long implants or multiple implants due to limited actuation stroke and reduced injection accuracy over long distances, increasing the risk of unwanted movement and potential harm.
Innovation Solution
The implant injection device employs a pushing rod with frictional retaining means and a thrust spring, allowing for controlled displacement with reduced user effort, enabling easier injection of long or multiple implants by minimizing the amplitude of user movement and maintaining precision through adjustable frictional forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user actuates the pushing rod by slidably pressing a button over a long distance, then the implant can be injected, but the injection accuracy deteriorates and unwanted movement increases
Solution Approach 1:
A frictional retaining means is introduced as an intermediary mechanism between the user's actuation and the pushing rod. The user actuates the retaining means (e.g., by pressing a button laterally or longitudinally), which modifies frictional forces to release or engage the pushing rod. This intermediary mechanism allows precise control with minimal user movement while maintaining injection accuracy, resolving the contradiction between ease of operation and measurement precision.
2Length of moving object
If the actuation stroke is extended to inject very long implants, then the implant can be fully injected, but the risk of unwanted movement and injury increases
Solution Approach 1:
The frictional retaining means acts as a safety intermediary that provides controlled engagement and disengagement of the pushing rod. By actuating the retaining means rather than directly moving the pushing rod over long distances, the system maintains precise control even when injecting very long implants, thereby reducing the risk of unwanted movement and potential injury to the patient.
3Ease of operation
If the user's thumb actuation stroke is used, then the device is simple to operate, but very long implants or multiple implants cannot be easily injected
Solution Approach 1:
The frictional retaining means serves as a mechanical intermediary that amplifies the user's limited thumb stroke into sufficient pushing rod displacement. By actuating the retaining means (e.g., pressing a button laterally to overcome friction), the user can control the pushing rod's movement indirectly, enabling injection of very long implants or multiple implants while maintaining operational simplicity.
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
This solution allows for the efficient and precise injection of long or multiple implants by simplifying the actuation process, reducing the risk of errors and improving handling safety, while maintaining hygiene standards.
Implementation Method 1
means for retaining the pushing rod by friction relative to the injection needle, opposing the displacement of the pushing rod to its final position
Data Source
AI summary
An implant injection device, includes an injection needle, a receiver housing for receiving at least one implant, injection device, including a pushing rod, arranged upstream from the implant housed in the receiver housing, and configured to push the implant through the injection needle between an initial position and a final position, a pushing member for pushing the pushing rod between the initial position and the final position, a retaining member for retaining the pushing rod by friction relative to the injection needle, opposing the displacement of the pushing rod to its final position, it being possible for a user to actuate the retaining member.