Motor-Driven Injection Device for Precise Subcutaneous Fluid Distribution
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Solution Overview
Problem
Current injection devices are unable to accurately control needle penetration depth, speed, and fluid distribution, leading to uneven filler distribution, pain, and potential tissue damage during wrinkle treatment and other subcutaneous injections.
Innovation Solution
A device with a needle configured for precise injection into the skin, featuring a displacement mechanism for controlled penetration depth and speed, and a mechanism to manage fluid flow rate, allowing for series of injections along a predetermined path with uniform distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual injection methods are used for wrinkle treatment, then the procedure is simple and adaptable, but the needle penetration depth cannot be controlled accurately and fluid distribution is uneven
Solution Approach 1:
The patent replaces manual mechanical control with an automated injection device that uses a motor-driven syringe plunger mechanism. The motor controller automatically regulates the injection process, replacing manual operator skill with an automated system that provides precise depth control through programmed parameters.
Solution Approach 2:
The patent incorporates feedback mechanisms through sensors that detect skin surface position and needle penetration depth. The controller receives real-time feedback from these sensors and automatically adjusts injection parameters to maintain precise control over needle depth and fluid delivery, ensuring consistent treatment results.
2Productivity
If fast injection speed is used to improve productivity, then more injections can be performed in shorter time, but tissue damage and pain increase
Solution Approach 1:
The patent employs periodic or pulsed injection action rather than continuous rapid injection. The motor controller delivers fluid in controlled pulses or cycles, allowing the tissue to recover between injection bursts. This periodic delivery maintains productivity while reducing acute tissue damage and pain associated with continuous high-speed injection.
Solution Approach 2:
The patent uses dynamic control of injection parameters including variable speed, pressure, and flow rate during the injection process. The motor controller can adjust these parameters in real-time based on tissue response, transitioning between different injection modes to balance speed and tissue protection, thereby reducing pain and damage while maintaining efficiency.
3Productivity
If high fluid flow rate is injected to improve productivity, then treatment time is reduced, but uniform distribution of filler is compromised
Solution Approach 1:
The patent employs dynamic control of fluid delivery parameters through the motor controller. The system can vary flow rate, pressure, and injection speed during the treatment process to maintain uniform filler distribution. By dynamically adjusting these parameters based on real-time feedback, the system achieves both productivity and distribution uniformity.
Solution Approach 2:
The patent incorporates feedback sensors that monitor fluid delivery characteristics and tissue response in real-time. The controller uses this feedback to automatically adjust flow rate and injection parameters, ensuring uniform filler distribution even at high productivity levels. The feedback mechanism prevents excessive flow that would compromise distribution uniformity.
4Manufacturing precision
If needle penetration depth is increased to reach deeper tissue, then more effective treatment is achieved, but risk of hitting blood vessels and causing damage increases
Solution Approach 1:
The patent incorporates feedback sensors that detect tissue characteristics and needle position in real-time. When the needle approaches blood vessels or encounters resistant tissue at increased depth, the sensors provide feedback to the controller, which then adjusts injection parameters or alerts the operator. This feedback mechanism enables safe deep tissue treatment by preventing unintended blood vessel injury.
Solution Approach 2:
The patent employs preliminary scanning or imaging techniques before injection to identify blood vessel locations and tissue anatomy. The system pre-maps the treatment area and plans the injection path to avoid blood vessels. This preliminary action enables safe deep penetration by提前 identifying and avoiding dangerous zones.
Data Source
AI summary
A device for successively injecting material at predetermined distances between successive injections to body tissue along a desired path of skin surface includes an injector sub-assembly having a needle configured for injecting the material into body tissue, and a displacement sub-assembly configured to facilitate precise displacement of the needle or of the device along the path between successive injections.