Snap-On Needle Stop and Anchor Sleeve for Migration Control
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Solution Overview
Problem
Current medical procedures face challenges in accurately positioning needles and securing leads or catheters due to issues like needle migration and dislodgement, which can lead to injuries and require improvements in safety and stability.
Innovation Solution
A deployable needle stop device and anchor sleeve are designed to prevent needle migration and secure leads or catheters by gripping them in place, using biocompatible materials and snap-on mechanisms to enhance safety and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If visual observation is used to position the needle, then the procedure is simple and quick, but accurate positioning is compromised and needle migration risk increases
Solution Approach 1:
The patent introduces a needle stop device as an intermediary mechanical component that physically limits needle movement. This mediator provides tactile and visual confirmation of needle position without requiring complex imaging systems, thus improving positioning accuracy while maintaining procedural simplicity.
Solution Approach 2:
The needle stop device is pre-positioned at the target depth before needle insertion. This preliminary action establishes a physical barrier that automatically stops the needle at the correct position, eliminating the need for continuous visual monitoring and complex positioning systems during the procedure.
2Reliability
If the needle is left unsecured after insertion, then the procedure is simple, but needle migration occurs causing injury risk and procedure failure
Solution Approach 1:
The needle stop device serves as a mediator between the needle and the surrounding tissue. It provides a mechanical barrier that prevents needle migration without requiring complex securing mechanisms or additional anchoring systems, thus improving reliability while maintaining simplicity.
Solution Approach 2:
The needle stop device is designed to preemptively counteract needle migration forces. By establishing a physical stop at the target position before migration can occur, it prevents the harmful action of needle movement without requiring active monitoring or complex restraining mechanisms.
3Reliability
If leads are secured with traditional methods, then the procedure is straightforward, but lead dislodgement and damage still occur
Solution Approach 1:
The anchor sleeve is designed with dynamic characteristics that allow it to adapt to the lead and surrounding tissue. The sleeve can be compressed during installation and then expands to provide a secure fit, maintaining reliability while accommodating variations in lead size and tissue density without requiring overly complex mechanisms.
Solution Approach 2:
The anchor sleeve employs a nested structure where the sleeve fits over the lead like a protective casing. This nested design provides multiple layers of security, with the sleeve itself acting as a protective barrier between the lead and external forces that could cause dislodgement or damage.
4Reliability
If the anchor sleeve uses encircling suture, then the lead is secured, but the suture causes circumferential deformation and lead damage
Solution Approach 1:
The patent extracts the harmful encircling suture from the anchoring mechanism. Instead of using a suture that wraps around and constricts the lead, the design uses a sleeve-based system that secures the lead through friction and mechanical interlocking without circumferential compression, thus maintaining anchoring strength while eliminating lead deformation.
Solution Approach 2:
The anchor sleeve acts as an intermediary between the anchoring mechanism and the lead. It provides a protective interface that distributes securing forces evenly along the lead surface without creating localized stress points or circumferential deformation, thus preventing lead damage while maintaining secure attachment.
Data Source
AI summary
Provided herein are devices attachable to medical devices. In some embodiments, these devices are used to guide positioning of needles and/or limit migration of needles. In some embodiments, these devices are used to improve pull out strength by being snapped into place. The device includes a first body, a second body, and a bridge connecting the first and second bodies. A gap is formed on top of the bridge and in-between the first body and the second body. The device further includes a first slit formed at the first body and a second slit formed at the second body. A first canal including portions of the gap, first slit, and second slit, and passing centrally through the device is formed. A second canal is formed on top of the bridge and at a bottom portion of the gap, the second canal passing centrally through the device.