Robotic Vascular Access Manipulator with Coaxial Cartridge
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Solution Overview
Problem
Current methods for gaining vascular access, such as the Seldinger technique, are prone to human errors leading to complications like vessel perforation, hemorrhage, and infection, requiring experienced operators and lacking guidance for safe and consistent insertion of needles and catheters.
Innovation Solution
A robotic system comprising a cart, a manipulation device, and a robotic arm with linear actuators to advance a needle, guidewire, and catheter coaxially, assisted by an imaging system for precise positioning and reduced operator error, enabling automated or semi-automated vascular access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the Seldinger technique is performed manually by an operator, then vascular access can be achieved, but human errors lead to complications such as vessel perforation, hemorrhage, and infection
Solution Approach 1:
The patent replaces the manual mechanical manipulation system with an automated robotic system. The robotic arm with multiple degrees of freedom performs the needle insertion and guidewire advancement automatically, eliminating human error in the mechanical manipulation phase while maintaining the Seldinger technique's safety benefits.
Solution Approach 2:
The robotic system incorporates image guidance and automated positioning capabilities that enable the system to self-align and self-position the needle and catheter. The image guidance system provides real-time feedback, allowing the robotic system to automatically adjust its position and orientation without requiring skilled manual manipulation.
2Manufacturing precision
If manual manipulation is used for needle and catheter insertion, then the procedure can be performed with simple equipment, but consistency and precision are compromised due to human error
Solution Approach 1:
The patent replaces imprecise manual mechanical manipulation with an automated robotic manipulation system. The robotic arm with multiple degrees of freedom provides precise and consistent needle insertion and catheter advancement, eliminating the variability introduced by human operators while achieving the required insertion precision.
Solution Approach 2:
The robotic system incorporates image guidance and sensing systems that provide real-time feedback on the position and orientation of the needle and catheter. This feedback enables the system to automatically adjust its manipulation to achieve precise insertion angles and depths, ensuring consistent results across multiple procedures.
3Reliability
If automated robotic manipulation is used, then human error is reduced and consistency is improved, but the device complexity increases
Solution Approach 1:
The robotic system is divided into modular components including a base station, robotic arm with multiple degrees of freedom, manipulation device, and image guidance system. Each module performs a specific function and can be independently controlled or maintained, reducing the overall complexity despite the automated nature of the system.
Solution Approach 2:
The robotic manipulation device is designed to perform multiple functions including needle insertion, guidewire advancement, and catheter placement through a single integrated system. This multi-functionality reduces the need for separate devices and procedures, thereby reducing overall system complexity while maintaining high reliability and consistency.
Data Source
AI summary
Manipulators and cartridges for robotic-assisted vascular access are described herein. In some embodiments, an apparatus includes a cartridge including a guidewire, a needle, and a catheter that are coaxially disposed with respect to each other; and a plurality of guides coupled to the guidewire, the needle, and the catheter; a manipulation device including a plurality of actuators each configured to couple to a different guide member of the plurality of guides, the plurality of actuators being configured to linearly advance and retract the plurality of guides to move the needle, the guidewire, and the catheter; and a control unit operatively coupled to the manipulation device, the control unit configured to control the plurality of actuators to selectively move the needle, the guidewire, and the catheter to gain access via the catheter to a target vessel of a patient.