Mono-body Defibrillation Probe Continuous Sheath Core Design
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Solution Overview
Problem
The manufacturing of mono-body defibrillation probes with windings and electric connections is complex and prone to weaknesses and short-circuits at connection zones, leading to potential ruptures and inefficiencies in delivering high-energy shocks for treating tachyarrhythmia.
Innovation Solution
A mono-body defibrillation probe design featuring a continuous sheath core with cavities and inserts for secure electrical connections, allowing for elastic strain and mechanical and electrical solidarization through junction rings and polymeric resin sealing, ensuring a homogeneous electric field and preventing weaknesses at winding areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple tubular sections are connected progressively to manufacture the probe, then the probe can accommodate windings and electric connections, but zones of weakness and short-circuits are created at connection places
Solution Approach 1:
The probe is divided into multiple tubular sections that are connected progressively during manufacturing. Each section can be prepared separately with windings and electric connections, then assembled into the final probe structure. This segmentation allows for modular manufacturing while maintaining functional integrity through proper connection techniques.
Solution Approach 2:
Insulating layers and protective coatings are applied beforehand at connection zones to prevent short-circuits and strengthen these vulnerable areas. The manufacturing process includes pre-treatment of connection surfaces and application of protective materials before final assembly, cushioning against potential failures at these critical junctions.
2Ease of manufacture
If multiple tubular sections are connected progressively, then electric connections can be established, but the manufacturing process becomes complex and time-consuming
Solution Approach 1:
Electric connections, windings, and insulating layers are established in advance during the preparation of individual tubular sections before final assembly. This preliminary action allows each section to be pre-configured with its electrical components, reducing the complexity and time required during the final assembly process.
Solution Approach 2:
Multiple operations are combined into integrated manufacturing steps. For example, applying insulating layers, establishing electric connections, and preparing connection surfaces are performed in sequence during section preparation rather than as separate post-assembly operations, streamlining the overall manufacturing process.
3Productivity
If the probe uses a continuous sheath core without interruptions, then manufacturing is simplified, but accommodating windings and internal conductors becomes more difficult
Solution Approach 1:
The probe structure employs a nested configuration where windings are wrapped around the sheath core, and internal conductors are positioned within the sheath lumen. This nesting allows the continuous sheath to accommodate multiple functional elements without interruptions or breaks in the sheath structure itself.
Solution Approach 2:
The windings and internal conductors are arranged in different spatial dimensions relative to the sheath core. Windings are positioned radially outward on the sheath surface, while conductors are placed axially within the sheath lumen, allowing all components to coexist in a continuous sheath structure without interference.
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
This design simplifies and quickens the manufacturing process while eliminating zones of weakness, ensuring reliable and efficient delivery of defibrillation or cardioversion energy with reduced risk of tissue burning and improved probe durability.
Implementation Method 1
so as to allow, by elastic strain of the material of the sheath core on both sides of the slit, the introduction into the cavities and the internal lumen of the unit formed by the final extremity of the electrical conductor provided beforehand with the two inserts
Implementation Method 2
with this insert being electrically connected, on the interior side, with the electrical conductor and, on the external side, with the corresponding extremity of the winding
Data Source
AI summary
A probe including at its distal extremity a tubular flexible sheath core supporting at least a winding forming a shock electrode and connected to a electrical conductor of connection extending in a internal lumen of the sheath core. The sheath core extends axially without a solution of continuity in the area supporting the winding. In particular, the sheath core comprises cavities to receive and hold conducting inserts, of homologous size with cavities formed locally close to the ends of the winding, the insert being connected to the interior side to the electrical conductor, and on the external side to the corresponding extremity of winding. A longitudinal slit connects the two cavities and allows, by elastic deformation of the sheath core, the introduction into the cavities and in the internal lumen of the unit formed by the final extremity of the electrical conductor beforehand equipped with its two inserts.