Micro Coils have been quite profound in the growth of the non-invasive surgeries. Being an essential part of the micro devices, they have revolutionized medical device industry. Most copper coils used in the winding process have insulated wires. The procedure requires that the wire should not come into contact by itself while it is twisted all over a core. The wire is initially isolated or coated with insulation before being twisted over a core.
Thus, if you want to learn more about the way micro coils their application in the medical profession, keep reading!
How Are The Micro Coils Different From Each Other?
The primary distinction between coils is their shape, and hence their electrical properties too. It may be winded into the following shapes — round, elliptical, and rectangular.
Take note that the coil’s inner and outer sizes are critical!
How The Micro Coils Are Wound For Medical Devices?
The size is the most important factor to consider while winding medical-grade coils — to implant a coil into a vein, for instance, the coil must be less than 0.8 mm in size, along with the coating of the wire. Coils are constructed by looping the insulated copper wire around a core. However, these may also be coreless and self-bonded, or they can be wound around a pattern like a rectangle. The rectangular structure is eventually eliminated, yielding a rectangular-shaped coil.
Thus, this causes the employment of highly sophisticated apparatus which must be developed and manufactured throughout. Currently, several companies are still working on developing a winding coil with a wire that is finer than 8 microns, which will be the world’s first nano-coil.
Preparation Of Micro Coils: An Insight Into The Process
An in-depth knowledge of winding technology & machinery becomes integral – for the preparation of micro-coils. You can’t just go out and purchase a piece of equipment that can wind micro-coils, as it requires thorough engineering skills with such machinery that must be designed and built from the ground up. Everything that is linked to micro coils, may it be for wire terminals or soldering — it’s always requires the employment of custom-made machinery.
Professionals create inductive components and offer interconnection within micro medical devices using ultra-fine wires — and this entails the collaboration of different machining technologies. These technologies are customized for handling copper and certain other metal wires of any dimension, from the smallest sequentially produced size.
Winding wires 5 to 10 times finer than a hair is a difficult task. When the intended ultimate form of the coiled-coil is bound by a large range of physical and environmental parameters, the task gets tougher. The devices are used for the medical purposes, thus high quality standards are crucial. Leading technology like thermo-pressure bonding has improved the integration quality of micro coils. This has improved the durability of the devices and improved reliability. Owing to the technological complexity, only a few firms worldwide have the technological expertise to sequentially, fabricate coils that thin.
