Syringe Pump With Oscillating Carriage for Filling and Emptying
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Solution Overview
Problem
Existing dosing systems are designed exclusively for emptying syringes but not for filling them, requiring separate filling aids for syringes to be used with syringe pumps.
Innovation Solution
The syringe plunger is designed to oscillate at a predetermined angle with a limited rotary movement, forming a detachable positive fit with the slide, allowing automated filling and emptying of the syringe using a single device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the syringe pump is designed exclusively for emptying syringes with a fixed slide mechanism, then the structure is simple and reliable, but the system cannot perform automated filling operations
Solution Approach 1:
The slide is designed to perform oscillating movements between two extreme positions rather than remaining fixed. This dynamic capability allows the same slide mechanism to enable both filling (when oscillating in one direction) and emptying (when oscillating in the opposite direction) operations, achieving functional versatility without adding separate mechanisms for each function
Solution Approach 2:
The oscillating slide mechanism serves multiple functions: it acts as a filling mechanism when oscillating in one direction, an emptying mechanism when oscillating in the opposite direction, and provides positioning control through its two extreme positions. This multi-functionality eliminates the need for separate filling aids and emptying mechanisms
2Ease of operation
If separate filling aids are used for syringe filling, then the filling function can be achieved, but the handling complexity increases and requires additional devices
Solution Approach 1:
The filling function and emptying function are merged into a single integrated syringe pump system. The oscillating slide mechanism combines both functions in one device, eliminating the need for separate filling aids and reducing the number of components the operator must handle
Solution Approach 2:
The syringe pump performs both filling and emptying operations automatically through the oscillating slide mechanism, eliminating the need for manual filling aids and reducing operational complexity. The system serves itself by integrating all necessary functions
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
Enables automated filling and emptying of syringes with a syringe pump without the need for additional devices, facilitating easy handling and efficient medication supply.
Implementation Method 1
the threaded rod has a slide screwing with the threaded rod and acting on the syringe plunger
Implementation Method 2
This limited rotary movement, which cannot cause the fluid picked up by the syringe to be conveyed, is used to form a detachable positive fit between the slide and the syringe plunger
Data Source
AI summary
The dosing system has a syringe with a syringe body having a nozzle, and a syringe plunger movably arranged in the syringe body and having a piston head; the dosing system also has a syringe pump that has a pump body, a syringe holder arranged on the pump body for mounting the syringe on the syringe pump, and a motor driving a threaded rod for driving the syringe plunger of the syringe, wherein the syringe plunger has a receptacle designed to receive at least one portion of the threaded rod and the threaded rod has a carriage which turns on the threaded rod and acts on the syringe plunger, characterized in that the carriage is designed to co-rotate with the threaded rod within a predetermined angular extent delimited respectively by a stop, and to be rotationally fixed when the carriage rests against the stop arranged in the rotational direction travelled by the threaded rod; and the syringe plunger and the carriage each have a connection means for forming a form fit connecting the syringe plunger and the carriage to each other, wherein the syringe plunger and the carriage are connected to each other when the carriage rests against the one stop, forming the form fit of the syringe plunger and the carriage, and are separated from each other when the carriage rests against the other stop.