Automated Needle Insertion Device with Vibration for CVC Placement
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Solution Overview
Problem
Current methods for central venous catheter (CVC) placement face high failure rates and complications due to tissue and vessel deformity, which are exacerbated by the reliance on surface anatomy for needle placement, leading to issues like arterial puncture, pneumothorax, and vein collapse.
Innovation Solution
An automated insertion device that uses actuated positional guidance and vibration of a penetrating member, such as a needle, to mitigate tissue and vessel wall deformity, employing mechanical actuators directed by a processor for precise needle placement, and incorporating a vibrating needle to reduce tissue deformation and friction during insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual needle insertion guided by surface anatomy is used, then the procedure is simple and quick, but the failure rate and complication rate increase significantly
Solution Approach 1:
The patent applies mechanical vibration to the needle during insertion to reduce tissue deformation and friction. The vibrating needle mitigates the pushing force that causes tissue and vessel wall deformity, thereby improving placement accuracy while maintaining procedural simplicity
Solution Approach 2:
The patent replaces manual mechanical insertion with an automated system that combines imaging guidance, computer-controlled needle positioning, and vibration delivery. This substitution of manual mechanics with automated mechanical systems resolves the contradiction between operational simplicity and placement reliability
2Manufacturing precision
If ultrasound guidance with manual control is used, then placement accuracy improves, but the complexity of the procedure and training requirements increase
Solution Approach 1:
The patent merges ultrasound imaging, computer processing, automated positioning, and vibration delivery into an integrated automated insertion device. This consolidation of multiple functions into a single automated system improves needle placement precision while reducing the perceived complexity for the operator
Solution Approach 2:
The automated system performs self-positioning and self-insertion based on pre-acquired imaging data and computer calculations. The system automatically determines the insertion path, calculates the required vibration parameters, and executes the procedure with minimal human intervention, thereby improving precision without proportionally increasing operational complexity
3Speed
If high insertion force is applied to penetrate tissue quickly, then insertion speed increases, but tissue deformation and vein collapse increase
Solution Approach 1:
The vibrating needle reduces the force required for tissue penetration by minimizing friction and tissue deformation. The vibration allows the needle to cut through tissue more efficiently without applying excessive pushing force, thereby maintaining insertion speed while reducing harmful tissue deformation and vein collapse
Solution Approach 2:
The patent changes the physical state of the needle by introducing vibration as a new parameter. This parameter change transforms the insertion process from a purely force-driven mechanical penetration to a vibration-assisted process that reduces friction and tissue deformation, allowing for faster insertion with less harmful force
4Object-affected harmful factors
If automated insertion with vibration is used, then tissue trauma is reduced, but the device complexity and cost increase
Solution Approach 1:
The automated insertion device is designed to perform multiple functions: imaging acquisition, image processing, needle positioning, vibration delivery, and insertion execution. By consolidating these functions into a single multi-functional platform, the device reduces tissue trauma while the shared components and integrated design help manage overall device complexity
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 automated system significantly reduces tissue deformation and friction, enhancing the accuracy and safety of CVC placement by minimizing the risk of complications such as arterial puncture and pneumothorax, allowing for more reliable and faster placement with reduced tissue trauma.
Implementation Method 1
The vibrational actuator generates vibrations that, when transmitted to the needle, mitigate the force of puncture and friction as the needle is inserted into the tissue
Data Source
AI summary
An automatic insertion device and method of using the same is provided. A vibrator and an extender are connected to a penetrating member and are both in electrical communication with a controller. A detector identifies a subcutaneous target for insertion and the insertion angle, distance and trajectory for the penetrating member are calculated. The vibrator provides vibrations to the penetrating member and the extender advances the penetrating member for insertion. The vibrator and extender are in electrical communication with one another during the insertion process and adjustments to the insertion speed are made based on feedback of vibrational load encountered by the vibrator during insertion, and adjustments to the vibrations are made based on feedback of insertion load encountered by the extender during insertion. Iterative samples are taken to constantly adjust the operation of one motor based on the operations and feedback from the other motor.