Rotating Cannula Motor with Bypass Flow Path
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Solution Overview
Problem
Existing power-assisted lipoplasty devices face issues with axial movement, leading to potential tissue damage and premature motor failure due to autoclaving, necessitating a device with angular rotation and a durable design for repeated use.
Innovation Solution
A device with a motor that rotates a cannula mechanically, providing a direct flow path for adipose tissue aspiration without passing through the motor, using a removable coupler and gears to facilitate rotation while ensuring the motor can withstand autoclaving multiple times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cannula moves axially during aspiration, then adipose tissue removal efficiency is improved, but tissue damage risk increases
Solution Approach 1:
The patent changes the movement dimension from axial (linear back-and-forth) to angular (rotational). The cannula rotates about its longitudinal axis during aspiration, allowing efficient tissue removal while eliminating the risk of puncturing skin or muscle tissue that occurs with axial movement. The rotational motion provides mechanical assistance for adipose tissue emulsification and removal without compromising safety.
2Device complexity
If the flow path passes through the motor, then device simplicity is improved, but motor durability decreases
Solution Approach 1:
The patent segments the device into distinct functional zones: the motor assembly and the flow path. The flow path for adipose tissue aspiration is designed to bypass the motor entirely, passing through a separate channel that does not intersect with the motor. This segmentation allows the motor to be sterilized multiple times without degradation while maintaining a relatively simple overall device structure. The motor and flow path are separated into independent functional regions.
3Object-affected harmful factors
If the cannula rotates angularly, then safety is improved, but device complexity increases
Solution Approach 1:
The patent merges the motor function with the cannula rotation function. The motor is directly coupled to the cannula assembly, providing angular rotation of the cannula during aspiration. This integration achieves safety improvement through rotational movement while minimizing the increase in device complexity by combining multiple functions into a unified assembly rather than adding separate independent systems.
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 solution enhances the safety and efficiency of adipose tissue removal by preventing tissue damage and extending the device's lifespan through mechanical rotation and a sealed flow path, reducing the risk of motor degradation and leaks.
Implementation Method 1
A device with a motor that rotates a cannula mechanically, providing a direct flow path for adipose tissue aspiration without passing through the motor
Implementation Method 2
removing adipose tissue from a surgical site by aspiration
Data Source
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AI summary
Devices with a motor that, when connected to a cannula, rotates the cannula while removing adipose tissue from a surgical site. The device provides a direct pathway, for aspirated adipose tissue, from a tip of the cannula to a location where tubing is attached to the device. The pathway does not pass through the motor that provides the angular rotation of the cannula. Instead, the path for the adipose tissue passes through a removable coupler that is connected to the cannula. The cannula may also have a direct flow path for adipose tissue that does not pass through the motor.