Liposuction Cannula Nutation Movement Reduces Tissue Trauma
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Solution Overview
Problem
Existing liposuction devices cause significant damage to vessels and nerves due to 'guillotine' or 'scrape' effects, require general anesthesia, and have inefficiencies in fat suction, especially when accessing restricted body areas, and are prone to blockages and scarring.
Innovation Solution
A liposuction device employing a nutation movement with a vibration component perpendicular to the cannula axis and a translation component along the axis, with an amplitude less than 1 cm, which reduces tissue trauma, allows efficient fat removal, and enables local anesthesia, using a mechanical drive member powered by compressed air for precise and controlled operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a translation movement is applied to the cannula with large amplitude, then fat suction efficiency is improved, but the risk of injuring vessels and nerves increases
Solution Approach 1:
The patent applies mechanical vibration to the cannula through a vibration element that generates oscillatory movements. This vibration facilitates fat cell disruption and suction while limiting the translation amplitude to less than 1 cm, thereby preventing the guillotine effect on vessels and nerves while maintaining effective fat removal
Solution Approach 2:
The patent changes the movement parameters by limiting the translation amplitude to less than 1 cm while introducing vibration frequency as a new parameter. This parameter modification allows the cannula to effectively disrupt and suction fat cells through vibrational energy without causing harmful cutting effects on surrounding tissues
2Ease of operation
If a double cannula structure is used, then mechanical assistance is provided, but the diameter of the cannula increases
Solution Approach 1:
The patent extracts the guiding function from a separate outer cannula and integrates it into the single cannula structure itself. The cannula is designed with an elongated body that provides inherent guidance while the vibration element is mounted directly on it, eliminating the need for a double cannula configuration
Solution Approach 2:
The patent merges the functions of the inner suction cannula and outer guiding cannula into a single integrated cannula structure. The vibration element is mounted directly on this unified cannula, combining mechanical assistance, guidance, and suction functions in one component, thereby reducing the overall diameter
3Object-affected harmful factors
If ultrasound frequency vibration is applied, then fat cells are disrupted, but the process becomes very slow and causes burns
Solution Approach 1:
The patent changes the vibration frequency parameter from ultrasound range to a lower frequency range that is mechanically more efficient for fat cell disruption. This parameter adjustment increases the speed of fat removal while avoiding the thermal effects and slowness associated with ultrasound frequencies
Solution Approach 2:
The patent uses mechanical vibration at optimized frequencies to directly disrupt fat cells through mechanical forces rather than thermal ultrasound energy. This approach achieves effective fat cell breakdown while maintaining faster processing speeds and avoiding burn risks associated with ultrasound heating
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
The device significantly minimizes vessel and nerve lesions, allows for more precise and efficient fat removal, reduces the risk of scarring, and enables access to previously difficult areas with reduced anesthesia requirements.
Implementation Method 1
the movement of the cannula is a nutation movement comprising vibration component perpendicular to the axis of the cannula and a translation component according to the axis of the cannula
Implementation Method 2
The suction of the fat itself is accompanied with a repeated backward and forward motion and with a depression created inside the cannula
Data Source
AI summary
This disclosure relates to an improved liposuction apparatus having a handpiece. The handpiece may have a handpiece suction pathway extending through the handpiece from a front end to a back end of the handpiece and a handpiece infiltration fluid pathway extending through the handpiece from the front end to the back end of the handpiece, the handpiece suction pathway and the handpiece infiltration fluid pathway being separate and distinct. The handpiece may be configured such that, when a suction cannula having a suction cannula pathway is attached to the front end of the handpiece, the suction cannula pathway and the handpiece suction pathway are in fluid communication with one another. And, when an infiltration fluid cannula having an infiltration cannula pathway is attached to the front end of the handpiece, the infiltration cannula pathway and the handpiece infiltration fluid pathway are in fluid communication with one another.