Guiding Device for Adipose Tissue Harvesting Cannula
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Solution Overview
Problem
Current methods for harvesting adipose-derived stem cells (ADSCs) require skilled professionals to insert and maneuver cannulas correctly, posing risks of injury to deeper tissues or organs and limiting accessibility to less qualified personnel.
Innovation Solution
A guiding device that holds a syringe equipped with a harvesting cannula, allowing for precise insertion and movement of the cannula at the correct depth within the subcutaneous adipose tissue, thereby minimizing the risk of injury and enabling safer, more accessible harvesting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a long cannula is used for harvesting adipose tissue, then the harvesting effectiveness is improved, but the risk of injuring deeper tissues or organs increases
Solution Approach 1:
The patent introduces a guide needle as an intermediary tool that is inserted first to establish a safe trajectory through the subcutaneous tissue. The harvesting cannula then follows this pre-established path, ensuring it reaches the adipose tissue layer without deviating and risking injury to deeper structures. This mediator approach allows effective harvesting while maintaining safety.
Solution Approach 2:
The guide needle is inserted and positioned in advance before the harvesting cannula is introduced. This preliminary action creates a predetermined safe pathway through the tissue layers, allowing the subsequent cannula insertion to follow the same controlled trajectory and avoid harmful deviations.
2Adaptability or versatility
If manual insertion of the cannula is performed, then flexibility in harvesting is improved, but the precision of insertion depth and angle deteriorates
Solution Approach 1:
The guide needle serves as a mediator that provides precise angular and depth control during insertion. By following the guide needle's established trajectory, the harvesting cannula achieves both precision in placement and flexibility in harvesting different adipose tissue locations.
3Area of stationary object
If the cannula is moved back and forth manually, then the harvesting coverage is improved, but the risk of uncontrolled movement and injury increases
Solution Approach 1:
The guide needle is inserted first to establish a controlled pathway. The harvesting cannula then moves back and forth within this predetermined trajectory, allowing extensive harvesting coverage while the guide needle prevents uncontrolled lateral movements that could cause injury to deeper tissues.
4Reliability
If a guiding device is introduced to control cannula insertion, then the safety is improved, but the device complexity increases
Solution Approach 1:
The harvesting system is divided into two separate components: a guide needle for establishing the safe trajectory, and a harvesting cannula for tissue collection. This segmentation allows each component to be optimized independently while maintaining overall safety and simplicity.
Solution Approach 2:
The guide needle acts as a simple intermediary device that provides safety control without adding significant complexity. It establishes the safe pathway and can be removed after the cannula is in place, maintaining procedural safety while keeping the overall system relatively simple.
Data Source
Figure 1
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AI summary
This disclosure provides a guiding device shaped so as to hold a syringe equipped with a harvesting cannula and to allow to insert the harvesting cannula at the exact depth below the skin of the patient to attain the subcutaneous adipose tissue. The cannula may be moved move back and forth in a driven manner immersed in the subcutaneous adipose tissue without any risk of wounding inner organs of the patient and in the proper layer. This disclosure provides also a syringe holder in the form of a hollow box with circular openings on a top surface. The circular openings are shaped so as to let a barrel of a syringe enter therein and a barrel flange not pass therethrough, in order to keep harvesting syringes hung with their barrel flanges abutted against the top surface of the syringe holder and their barrels protected into the hollow box.