Medical Probe Electrode Recesses for Secure Adhesive Retention
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Solution Overview
Problem
Existing medical probes face challenges in securely attaching electrodes to spines using adhesive due to inadequate bonding, leading to electrodes becoming loose and sliding out of place during procedures.
Innovation Solution
The electrodes feature recesses in their body design that allow adhesive to be securely received, preventing its removal once hardened, ensuring a stable attachment to the spine.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive is used to attach electrodes to spines, then the attachment process becomes easier and more cost-effective, but the adhesive does not sufficiently adhere to the electrode or delaminates from the electrode, causing the electrode to become loose and slide out of place
Solution Approach 1:
The electrode body is designed with a recess that receives the adhesive, creating a nested structure where the adhesive is contained within the recess. This nesting ensures the adhesive remains in place and maintains reliable bonding between the electrode and spine throughout the procedure.
Solution Approach 2:
The recess creates a third dimension in the electrode structure, providing depth and volume for adhesive containment. This dimensional addition transforms the two-dimensional adhesive application into a three-dimensional bonded structure, preventing delamination and ensuring stable attachment.
2Strength
If electrodes are attached using soldering or welding, then the bonding strength is improved, but it becomes difficult to attach electrodes to spines due to their small size
Solution Approach 1:
The patent replaces the mechanical/thermal processes of soldering or welding with a chemical bonding process using adhesive. This substitution eliminates the difficulty of applying heat or mechanical force to small electrodes while achieving sufficient bonding strength through the adhesive's chemical properties.
Solution Approach 2:
The adhesive serves as an intermediary material between the electrode and spine, facilitating the attachment process. This intermediary enables bonding without requiring direct mechanical or thermal contact between the electrode and spine, making the process easier to perform on small components.
3Ease of operation
If adhesive is applied to attach electrodes to spines, then the attachment process is simplified, but the adhesive may delaminate from the electrode, causing the electrode to slide out of place
Solution Approach 1:
The recess nested within the electrode body provides a contained space for the adhesive, preventing delamination by physically enclosing the adhesive between the electrode body walls and the spine interface.
Solution Approach 2:
The recess is pre-formed in the electrode body during manufacturing, creating a ready-made adhesive containment structure before the electrode is assembled to the spine. This preliminary structural preparation ensures stable adhesive bonding is built-in from the start.
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 recessed design effectively secures electrodes to spines, preventing delamination and ensuring they remain in place during medical procedures, enhancing the reliability of cardiac tissue mapping and ablation processes.
Implementation Method 1
The electrodes are generally attached to the spines and secured in place by soldering, welding, or using an adhesive
Data Source
AI summary
The disclosed technology includes an electrode comprising a body extending along a longitudinal axis from a proximal end to a distal end. The body defines a tissue-facing surface, a lumen extending along the longitudinal axis through the body from the proximal end to the distal end, and one or more recesses extending through the body transverse to the longitudinal axis of the body. The one or more recesses are disposed between the tissue-facing surface and the lumen and define a first portion extending into the body a first depth and a second portion extending from the first portion a second depth into the body. The first portion comprises a first gap distance and the second portion comprises a second gap distance. The second gap distance can be greater than the first gap distance.