Core Wire Electrochemical Tapering for Continuous Precision Processing

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Solution Overview

Problem

Existing guide wire production methods involve mechanical grinding, which alters the core wire's properties, requires manual processing, and leads to inconsistent quality due to grinding wheel wear, making continuous processing impossible and demanding high skill levels.

Innovation Solution

A core wire processing system using electrochemical corrosion to form tapered sections, eliminating mechanical impact and enabling continuous processing without pre-cutting, with optimized subsequent processes to improve efficiency and consistency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If mechanical grinding is used to form tapered sections on core wires, then the tapered shape is achieved, but the core wire's original properties are altered and performance decreases

Engineering Contradiction:
Improvetapered section shapeVSAvoidcore wire performance
Core Design Contradiction:
ShapeVSReliability

Solution Approach 1:

The patent replaces the mechanical grinding system with an electrochemical corrosion system. Instead of using a grinding wheel to mechanically remove material, the invention uses electrochemical reactions to dissolve metal from the core wire surface, forming the tapered section. This substitution eliminates mechanical impact and heat generation, preserving the core wire's original properties while achieving the desired tapered shape.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the processing parameters from mechanical force and rotation to electrochemical parameters such as current density, voltage, and electrolyte composition. By controlling these electrochemical parameters, the tapered section is formed through controlled metal dissolution rather than mechanical removal, thereby maintaining core wire integrity and performance.

Inventive Principle:
Principle #35Parameter changes

2Ease of manufacture

If core wires are pre-cut into individual lengths before processing, then each core wire can be processed separately, but continuous processing of multiple core wires is impossible and productivity is reduced

Engineering Contradiction:
Improveindividual core wire processingVSAvoidproduction efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent applies segmentation by providing multiple electrochemical corrosion chambers arranged in series, with each chamber processing a specific section of the core wire to create different tapered profiles. This allows a single continuous core wire to undergo multiple processing stages simultaneously, achieving both individualized processing and continuous production.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent enables continuous processing by allowing multiple core wires to pass through the electrochemical corrosion chambers simultaneously in a continuous manner. The electrochemical process operates continuously without the need to stop for each individual wire, thereby maintaining high productivity while processing each wire separately through the multi-chamber system.

Inventive Principle:
Principle #20Continuity of useful action

3Shape

If grinding wheels are used for core wire processing, then tapered sections can be formed, but grinding wheel wear leads to inconsistent grinding precision and unstable processing quality

Engineering Contradiction:
Improvetapered section geometryVSAvoidgrinding precision consistency
Core Design Contradiction:
ShapeVSManufacturing precision

Solution Approach 1:

The patent replaces the mechanical grinding wheel with an electrochemical corrosion system where the 'tool' is the electrolyte solution. Unlike grinding wheels that wear down and require frequent replacement, the electrolyte can be continuously circulated and regenerated, maintaining consistent processing precision throughout operation without mechanical wear.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent transforms the processing mechanism from mechanical contact with a wearing tool to electrochemical dissolution with a regenerable electrolyte. By controlling electrochemical parameters (current density, temperature, electrolyte flow rate), consistent tapered section geometry can be maintained over extended periods without the precision degradation inherent in mechanical grinding wheel wear.

Inventive Principle:
Principle #35Parameter changes

4Ease of manufacture

If manual peeling is used to remove PU materials from core wires, then the core wire can be exposed for grinding, but the incisions are uneven and work efficiency is low

Engineering Contradiction:
Improvecore wire exposureVSAvoidincision uniformity
Core Design Contradiction:
Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent replaces manual mechanical peeling with electrochemical corrosion to remove the PU material coating. The electrochemical process uniformly dissolves the PU layer from the core wire surface, exposing the core wire evenly without the uneven incisions and variability associated with manual peeling operations.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 system maintains core wire properties, ensures high precision and stability, reduces manual intervention, and enhances production efficiency by eliminating inconsistent grinding and manual peeling issues.

Implementation Method 1

an electrochemical corrosion section arranged on the frame, wherein the electrochemical corrosion section comprises a core wire corrosion device

Methodology Applied
Scientific EffectElectrochemical corrosion: Electrolysis

Data Source

PatentUS20260078520A1Core wire processing system
Publication Date: 2026.03.19 ZHUZHOU MAOWU MEDICAL TREATMENT TECHNOLOGY CO LTD
  • US20260078520A1 patent drawing
  • US20260078520A1 patent drawing
  • US20260078520A1 patent drawing

AI summary

A core wire processing system includes a frame and an electrochemical corrosion section arranged on the frame, wherein the electrochemical corrosion section comprises a core wire corrosion device and the electrochemical corrosion section comprises an electrolytic tank, a cathode, and anodes; the cathode is connected to a negative pole of a DC power supply, and the anodes is connected to a positive pole of the DC power supply; an outer contour of the cathode is designed according to a design size of a core wire, and the anodes comprises a plurality of core wires; electrodes are placed in the electrolytic tank, with the cathode located above the anodes, and are not in direct contact each other; and inside the electrolytic tank is filled electrolyte.