Motor-Driven Insertion Device for Minimizing Needle Trauma
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Solution Overview
Problem
Existing insertion devices for delivering medication, such as insulin, can be traumatic for patients due to the rapid insertion of needles, and there is a need for a mechanism that minimizes trauma and allows for easy insertion and reuse of piercing members.
Innovation Solution
An insertion system comprising a base and two device housings with carrier bodies and a driver, allowing for controlled movement of a piercing member from a retracted to an advanced position, with a locking mechanism to prevent premature release and a compliant material for articulation, enabling minimal trauma and easy insertion of needles or cannulas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a needle is forced quickly from retracted to extended position by spring, then insertion speed is improved and trauma is reduced, but some patients may feel more trauma compared to slow steady insertion
Solution Approach 1:
The device transitions from a static spring-loaded mechanism to a dynamic system with variable insertion rates. The motor-driven carrier body can adjust insertion speed in real-time, allowing the system to optimize between quick insertion (for reduced trauma in some patients) and slow steady insertion (for patient comfort in other cases), thereby resolving the contradiction through adaptability.
Solution Approach 2:
The invention changes the physical parameter of insertion speed from fixed (spring-driven) to variable (motor-controlled). By enabling continuous adjustment of the insertion rate parameter, the system can adapt to different patient preferences and anatomical conditions, resolving the trauma contradiction through parameter optimization.
2Object-affected harmful factors
If manual insertion of needle is used, then patient trauma is reduced through slow steady pace, but insertion process becomes more time-consuming and less efficient
Solution Approach 1:
The device performs the insertion action automatically through motor-driven carrier body movement, eliminating the need for manual manipulation by the operator. The system self-regulates the insertion process, maintaining slow steady pace for patient comfort while automatically managing the time required, thus resolving the contradiction between trauma reduction and time efficiency.
Solution Approach 2:
The invention replaces the purely mechanical manual insertion process with an electromechanical system. The motor-driven mechanism substitutes human hand movements, providing controlled slow steady insertion without the time loss associated with manual positioning and manipulation, thereby resolving the time-trauma contradiction.
3Reliability
If piercing members are designed for single use, then patient safety is improved, but device complexity and waste increase
Solution Approach 1:
The device is segmented into reusable and disposable components. The carrier body with motor and control systems is reusable, while the piercing member (needle/cannula) is disposable. This segmentation allows the complex safe insertion mechanism to be reused while ensuring patient safety through single-use piercing members, resolving the contradiction between safety and complexity.
Solution Approach 2:
The invention implements a discard-recover strategy where the disposable piercing member is discarded after single use for patient safety, while the complex carrier body mechanism is recovered and reused. This approach maintains high patient safety standards while avoiding the need to redesign the entire complex system for each use, thereby resolving the safety-complexity contradiction.
Data Source
AI summary
A piercing member for piercing a membrane may be arranged within a housing and supported by a compliant that may be for allowing articulation of the piercing member relative to the housing in a case where the piercing member is in the membrane and moved relative to the housing.