Handheld Pulsatile Liposuction Device with Curved Cannula
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Solution Overview
Problem
Current liposuction machines lack pulsatile vacuum capabilities, which are necessary to effectively agitate and loosen fat cells for efficient removal, and there is a need for handheld, sterile devices that can both harvest and re-inject fat with precision.
Innovation Solution
The development of systems and devices that utilize fixed and variable pulsatile vacuums, including cordless, handheld, motorized micro-cannular suction devices, and curved cannulas designed to follow the body's curves, allowing for efficient fat aspiration and re-injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a vacuum pump generates constant negative pressure for fat aspiration, then fat cells can be drawn into the cannula, but the fat cells cannot be effectively agitated and loosened for efficient removal
Solution Approach 1:
The patent applies periodic action by using a pulsatile vacuum pump that delivers intermittent pulses of negative pressure rather than constant suction. This pulsing action agitates and loosens fat cells within the cannula, making them easier to remove while maintaining effective aspiration. The periodic pressure changes create mechanical disturbance that breaks up fat cell clumps.
Solution Approach 2:
The pulsatile vacuum pump generates mechanical vibrations through rapid pressure changes that propagate through the cannula and fat cells. This vibration mechanically agitates the fat cells, loosening their adhesion to surrounding tissues and to each other, thereby improving the ease of fat cell removal while maintaining aspiration efficiency.
2Ease of operation
If manual thumb pressure is applied to the syringe plunger for reinjection, then fat can be injected, but over-pressurization occurs causing sudden release of fat bolus and aesthetic problems
Solution Approach 1:
The patent replaces the manual mechanical plunger system with a motorized injection system. The motor provides precise, controlled force application to the plunger, eliminating the variability and loss of control inherent in manual thumb pressure. This substitution ensures smooth, consistent injection without sudden pressure spikes that cause fat bolus release.
Solution Approach 2:
The motorized injection system incorporates feedback control to monitor and adjust injection pressure in real-time. This feedback mechanism detects pressure changes and automatically modulates motor output to maintain optimal injection pressure, preventing over-pressurization and ensuring reliable, smooth fat delivery to the target area.
3Ease of manufacture
If straight suction cannulas are used for liposuction, then the cannula structure is simple, but the cannula cannot follow the curved planes of the body effectively
Solution Approach 1:
The patent applies curvature by designing the cannula with a bent or curved configuration instead of a straight shape. This curved geometry allows the cannula to follow the natural contours and curved planes of the body, improving adaptability to different anatomical regions while maintaining functional effectiveness for fat aspiration.
4Productivity
If a large suction machine is used for liposuction, then fat aspiration capability is strong, but the machine occupies floor space and requires tubing attachment from a remote location
Solution Approach 1:
The patent applies segmentation by dividing the liposuction system into separate modular components: a handheld device containing the vacuum pump and control systems, and a separate sterile cannula. This segmentation allows the aspiration function to be concentrated in a compact handheld unit while the cannula remains disposable and sterile, reducing overall system complexity and eliminating the need for extensive tubing and remote machine placement.
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
These solutions enable more efficient and effective liposuction procedures by agitating fat cells with pulsatile vacuum, allowing for sterile, handheld harvesting and re-injection of fat, and reducing the number of incisions required, thereby improving procedural efficiency and patient outcomes.
Implementation Method 1
pulsatile vacuum capabilities, which are necessary to effectively agitate and loosen fat cells for efficient removal
Implementation Method 2
a vacuum pump generates negative pressure up to a maximum pressure level and maintains the pressure level at a relatively constant level
Data Source
AI summary
Systems, devices and methods for use in liposuction and infusion medical procedures including handheld devices, micro-cannulas, curved cannulas vacuum pressure changing features.