Self-anchoring Catheter with Actuator for Tissue Security
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Solution Overview
Problem
Catheters often dislodge due to inadequate anchoring, leading to serious complications and increased economic burden, particularly for long-term use catheters like CVCs, which require secure anchoring without sutures or elaborate taping.
Innovation Solution
A self-anchoring catheter design featuring an axially rigid body with a movable anchoring section, such as a helical jacket or stiffened member, that can be actuated to secure itself to tissue using a control interface like a wheel, allowing for adjustable anchoring without external anchoring devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional catheter anchoring methods (sutures, taping, external anchoring devices) are used, then catheter security can be achieved, but device complexity and ease of operation deteriorate
Solution Approach 1:
The catheter incorporates a self-anchoring mechanism where the anchor portion is integrated into the catheter body and can be deployed without external assistance. The actuator allows the catheter to anchor itself to tissue, eliminating the need for sutures, tapes, or external anchoring devices, thereby reducing device complexity while maintaining security
Solution Approach 2:
The anchor portion is merged with the catheter body as an integrated component rather than a separate external device. This combination allows the anchoring function to be built into the catheter structure, reducing the number of separate components needed and simplifying the overall system
2Reliability
If traditional catheter anchoring methods are used, then catheter security can be achieved, but ease of operation deteriorates
Solution Approach 1:
The catheter anchors itself through the integrated actuator mechanism, eliminating the need for complex manual suturing or taping procedures. The operator simply activates the actuator, and the catheter autonomously deploys the anchor portion to secure itself to tissue, significantly improving ease of operation
Solution Approach 2:
The manual mechanical processes of suturing or taping are replaced with a controlled mechanical actuation system. The actuator provides precise control over anchor deployment, transforming a complex manual operation into a simple button-press or knob-turn action
3Manufacturing precision
If fixed anchoring sections are used, then manufacturing precision can be maintained, but adaptability deteriorates
Solution Approach 1:
The anchoring system transitions from a fixed geometry to a dynamic, adjustable configuration. The actuator allows the anchor portion to be deployed at different positions and angles, enabling adaptation to various patient anatomies while maintaining precise manufacturing of the anchor's geometric features
4Adaptability or versatility
If adjustable anchoring sections are added, then adaptability improves, but device complexity worsens
Solution Approach 1:
The adjustment mechanism is merged with the anchor deployment system. The actuator serves dual purposes: it controls both the deployment of the anchor portion and the adjustment of its position and orientation. This integration minimizes additional complexity compared to having separate adjustment and anchoring mechanisms
Data Source
AI summary
A self-anchoring catheter is provided that includes a body, an anchor portion, and an actuator. The body having a proximal end and a distal end, and defining a pathway therebetween, the body being axially rigid. The anchor portion can be imparted on the body to secure the body to surrounding tissue. The actuator can be disposed adjacent the proximal end of the body to positionally control movement of the anchor portion and its position relative to the actuator.