Interchangeable Insulin Pump Cartridges With Collapsible Reservoir
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Solution Overview
Problem
Current infusion devices for delivering insulin, such as syringes and pumps, face challenges including patient compliance due to anxiety and discomfort, risk of infection, complexity in use, and inefficiencies in insulin delivery, particularly in varying insulin requirements and comfort during activities or sleep.
Innovation Solution
A portable infusion pump system with interchangeable cartridges that include a collapsible reservoir and a drive mechanism, allowing for flexible use between different pump devices with varying features, ensuring sterility and efficient insulin delivery while accommodating user interface needs for tailored insulin profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a portable infusion pump system with interchangeable cartridges is used, then adaptability and ease of operation are improved, but device complexity increases
Solution Approach 1:
The pump system is designed with a universal interface that accepts multiple types of cartridges (insulin cartridges, glucose monitoring cartridges, etc.). The pump controller can identify and adapt to different cartridge types through communication protocols, allowing a single pump device to perform multiple functions without requiring separate specialized devices for each function.
Solution Approach 2:
The cartridge design incorporates nested components where the cartridge itself contains sub-components such as the reservoir, delivery mechanism, and communication interface. The cartridge can be inserted into the pump housing, creating a compact integrated system during use, then separated when not needed, reducing the overall footprint and complexity of the portable device.
2Manufacturing precision
If a collapsible reservoir with drive mechanism is used, then manufacturing precision and reliability are improved, but device complexity increases
Solution Approach 1:
The drive mechanism uses a motorized spool system with a drive shaft and engagement features instead of complex mechanical linkages. The motor provides precise rotational control to wind or unwind the delivery mechanism, enabling accurate insulin delivery. The engagement features (protrusions and recesses) provide automatic alignment and secure coupling between the drive mechanism and cartridge components.
Solution Approach 2:
The reservoir is designed as a collapsible flexible container that can be compressed as insulin is delivered. This flexible reservoir design allows for compact packaging, reduces manufacturing complexity compared to rigid reservoirs, and maintains delivery precision through the motorized spool control system that compensates for the changing reservoir volume and pressure.
3Reliability
If pressure venting and pressure feedback systems are implemented, then reliability is improved, but device complexity increases
Solution Approach 1:
The cartridge includes self-sealing ports that automatically maintain sterility. The fill port can be opened for filling during manufacturing or initial use, then automatically seals itself. The vent port similarly maintains pressure equilibrium while preventing contamination. These self-sealing mechanisms eliminate the need for complex manual sealing systems or continuous monitoring, reducing overall system complexity while maintaining reliability.
Data Source
AI summary
Embodiments are directed to portable infusion devices, systems, and methods of using the same for dispensing materials. In some cases, the devices, systems and methods may be used for infusing a material such as medicament, e.g., insulin, into a body in need thereof.