Spring Contact Power Source Compartment for Medical Infusion Pumps
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Administering devices for infusions or injections, such as insulin pumps, face the risk of power source disconnection due to mechanical stress, which can lead to unintended device resets and potential health risks if the battery terminal separates from its contact.
Innovation Solution
The solution involves using resilient spring contacts for both terminals of the power source, with a cover having a connecting element that ensures a reliable contact through radial pre-tensioning and a mispoling protector to prevent incorrect insertion, ensuring a secure electrical connection even under stress conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a battery is used as power source with rigid contacts, then the device structure is simple, but the connection reliability deteriorates under mechanical stress
Solution Approach 1:
The patent applies the dynamics principle by replacing rigid contacts with spring-based contacts that can dynamically adapt to mechanical stress. The first contact spring (15) is disposed in the compartment interior and the second contact spring (16) on the cover, both capable of elastic deformation to maintain reliable electrical connection during device movement, shaking, or impact.
Solution Approach 2:
The contact system is segmented into two separate contact springs positioned at different locations (one in the compartment interior, one on the cover). This segmentation allows each spring to independently compensate for different types of mechanical stress and movement, enhancing overall connection reliability.
2Reliability
If spring contacts are used to improve connection reliability, then the connection stability improves under stress, but the device complexity increases
Solution Approach 1:
The contact springs are designed to be self-adjusting through their elastic properties. The springs automatically compensate for positional variations and mechanical stress without requiring external control mechanisms, reducing the overall system complexity while maintaining high reliability.
Solution Approach 2:
The patent utilizes the elastic parameter of the contact springs to enable dynamic adjustment of contact pressure and position. By changing the physical state of the contacts from rigid to elastic, the system achieves reliable connection under varying mechanical conditions without adding complex control systems.
3Reliability
If the power source is secured firmly in the compartment, then the connection reliability improves, but the device adaptability to movement decreases
Solution Approach 1:
The contact springs provide dynamic adaptability to device movement while maintaining reliable connection. The springs can compress and extend in response to acceleration, deceleration, and impact forces, allowing the power source to remain firmly connected during normal operation but accommodating movement during shocks or impacts.
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 design provides a reliable and secure connection between the power source and the device's terminals, preventing unintended resets and ensuring consistent operation under various mechanical conditions.
Implementation Method 1
The contacts to the terminals of the power source are provided in the form of contact springs, preferably compression springs, which means that the contacts possess a pre-defined amount of spring force due to their shape and their material
Implementation Method 2
Consequently, in the event of movements of the power source caused by shaking, impact or vibration, for example, they can follow this movement away from the contact, so that the contact of the terminal of the power source does not migrate relative to the contact spring
Data Source
AI summary
Administering device for infusing or injecting a product, comprising a housing (1, 2) with a receiver (3) for the product, a compartment (7) for a power source in order to supply the conveying mechanism (4) with electrical energy, a first contact spring (15) which is disposed in the compartment and places a terminal of the power source in an electrically conducting contact by means of a spring force when the power source is disposed in the compartment (7), and a second contact spring (16) for establishing an electrically conducting contact for an opposite terminal of the power source, likewise by means of spring force.