Rigid Needle Insertion Mechanism for Drug Delivery Pump
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Solution Overview
Problem
Current ambulatory infusion devices for parenteral drug delivery are expensive, cumbersome, difficult to program, and require specialized maintenance, limiting their accessibility and cost-effectiveness for both users and healthcare providers, while manually operated syringes and injection pens lack precision and universality.
Innovation Solution
The development of drug delivery pumps with integrated safety mechanisms that automatically retract the needle and provide sterile fluid pathways, ensuring safe and precise delivery of medications through a user-friendly, programmable, and cost-effective system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ambulatory infusion devices are used for precise programmable drug delivery, then delivery precision and automation are improved, but device complexity, cost, and maintenance requirements increase
Solution Approach 1:
The device is divided into distinct functional modules: a pump module for fluid delivery, a needle assembly for insertion, and a housing for integration. This segmentation allows each component to be optimized independently while maintaining overall system precision and programmability.
Solution Approach 2:
The pump module is designed to perform multiple functions including precise fluid metering, automated needle control, and programmable delivery profiles. This multi-functionality reduces the need for separate specialized components, thereby reducing overall device complexity while maintaining delivery precision.
2Measurement precision
If traditional infusion devices are used for automated drug delivery, then delivery precision is improved, but ease of operation and accessibility deteriorate
Solution Approach 1:
The needle assembly is integrated directly with the pump module, combining the fluid delivery mechanism and needle insertion function into a single unified component. This integration simplifies the user interface and operation sequence, making the device more accessible while maintaining precise delivery control through the pump's programmable features.
3Ease of operation
If manually operated syringes are used for drug delivery, then ease of operation is improved, but delivery precision and automation capability deteriorate
Solution Approach 1:
The pump module is designed to automatically control needle insertion, fluid delivery, and retraction without requiring manual manipulation by the user. The system self-regulates the delivery rate and timing based on programmed parameters, maintaining high precision while requiring minimal user intervention beyond initial setup.
4Reliability
If infusion devices with integrated safety mechanisms are used, then safety and reliability are improved, but device complexity increases
Solution Approach 1:
The needle assembly includes pre-integrated safety features such as automatic retraction capability and protective shielding that are built into the design from the outset. These safety mechanisms are activated automatically through the pump's control system, ensuring reliable operation without requiring additional complex safety subsystems.
Data Source
AI summary
An insertion mechanism and methods of assembly and operation of a drug pump may include an insertion mechanism housing; a housing cap; a manifold guide; an insertion biasing member initially held in an energized state; a retraction biasing member connected to a hub connected to a proximal end of a needle; and, optionally, a clip retainer. The retraction biasing member is held initially in an energized state between the hub and manifold guide. A manifold has a manifold body and one or more septa defining a manifold header. The retraction biasing member may be held initially energized between the hub and the clip retainer. The needle is advanced by the insertion biasing member(s) from the initial configuration to an administration configuration, opening a fluid pathway from the manifold header to the target. The pump may include an activation mechanism, a drive mechanism, a fluid pathway connection, and the insertion mechanism.