Planar Ferromagnetic Coated Surgical Tip
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current surgical tools, particularly those with tungsten wire substrates, face limitations such as stiffness, difficulty in plating, thermal stress issues, high cost, and limited malleability, making them challenging to use for customized shapes and efficient tissue cutting or dissection.
Innovation Solution
The development of surgical tips with beryllium copper substrates and ferromagnetic coatings, where the substrate is formed into planar extension strips and coated with nickel-iron or nickel-chromium alloys, allowing for improved thermal conductivity, stiffness, and electrical conductivity, enabling precise control over thermal energy delivery for tissue manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If tungsten wire substrate is used, then thermal conductivity is improved, but malleability deteriorates
Solution Approach 1:
The patent uses a composite structure combining copper substrate with ferromagnetic coating. The copper substrate provides excellent thermal conductivity and electrical conductivity, while the ferromagnetic coating provides the necessary magnetic properties for electromagnetic induction heating. This composite approach allows the surgical tip to achieve both good thermal performance and electromagnetic functionality without the brittleness issues of tungsten.
Solution Approach 2:
The patent changes the material parameters by selecting copper-based alloys (such as copper-beryllium, copper-tungsten, or copper-molybdenum) that offer a balanced combination of thermal conductivity, strength, and ductility. These material parameter changes enable the substrate to be more malleable for custom shaping while maintaining adequate thermal performance.
2Use of energy by moving object
If tungsten wire substrate is used, then thermal conductivity is improved, but ease of manufacture deteriorates
Solution Approach 1:
The patent employs a copper substrate with ferromagnetic coating composite structure. The copper substrate serves as an excellent base material for plating processes, offering better surface preparation and coating adhesion compared to tungsten. This makes the manufacturing process, particularly the plating steps, significantly easier and more reliable.
Solution Approach 2:
The patent adopts a multi-layered structure where the base copper substrate can be easily replaced or regenerated if needed, while the ferromagnetic coating is applied as a functional layer. This approach simplifies manufacturing by allowing the use of more affordable, easier-to-process copper materials instead of expensive tungsten, with the ferromagnetic properties added through coating.
3Use of energy by moving object
If tungsten wire substrate is used, then thermal conductivity is improved, but cost deteriorates
Solution Approach 1:
The patent uses a composite structure where the bulk of the surgical tip is made from copper-based material (which is abundant and inexpensive), with only a thin ferromagnetic coating applied to the surface where electromagnetic induction is needed. This dramatically reduces the overall material cost compared to using tungsten throughout, while maintaining the necessary thermal and magnetic performance.
Solution Approach 2:
The patent changes the material selection from rare and expensive tungsten to abundant copper-based alloys, achieving significant cost reduction. The ferromagnetic coating is applied only where needed for electromagnetic function, rather than requiring the entire substrate to be expensive ferromagnetic material, thus optimizing cost efficiency.
4Use of energy by moving object
If tungsten wire substrate is used, then thermal conductivity is improved, but device complexity deteriorates
Solution Approach 1:
The patent simplifies the manufacturing process by using a copper substrate that is easier to work with, bend, and plate compared to tungsten. The ferromagnetic coating is applied as a standard plating process on the copper substrate, which streamlines the overall manufacturing sequence and reduces the complexity associated with tungsten processing.
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 solution provides a cost-effective, thermally adjustable surgical tool with precise control over tissue effects, reducing accidental damage and overcoming limitations of monopolar and bipolar systems by localizing heat and minimizing thermal damage, while being easier to manufacture and less prone to stress fractures.
Implementation Method 1
a ferromagnetic layer coating at least a portion of the substrate... enabling precise control over thermal energy delivery for tissue manipulation
Implementation Method 2
localizing heat and minimizing thermal damage... precise control over tissue effects
Implementation Method 3
improved thermal conductivity... substrate comprising beryllium copper
Data Source
AI summary
The present invention relates to surgical dissection tips comprising a substrate comprising beryllium copper and a ferromagnetic layer coating at least a portion of the substrate, and methods of making such surgical dissection tips.