Sensors have significant importance in the biomedical field as these devices help to access some unreachable regions of our body. A significant application of biomedical sensors is that this device is useful in cryo cancer treatment in order to eliminate tumors. Considering the useful applications of sensors, manufacturers are now focusing on technological development for the preparation of ultra-fine wires and micro-coils.
However, the physical size of these medical invasive devices creates the main challenge for the designers of these devices. As the main purpose of the medical sensors is to reach some difficult regions of our body that were previously unapproachable, therefore, the sensors have to be very tiny. To enter these devices into the human body, medical professionals make use of temporary or permanent implants, catheters, and minimally inversive methods. For sending the sensors into inaccessible regions, constant focus on the miniaturization process is very important. It is also important to focus on minimizing disruption of the functions of the body, lessen the consumption of energy by the devices, and improve the devices’ lifetime.
Why Sensors are Important in Biomedical Field?
Sensors are critical in the biomedical field to fulfil different purposes, such as-
- For monitoring, controlling, and logging data with the help of miniature implantation.
- For the transfer of energy to the miniature implants to fulfil the battery charging requirement.
- In several diagnostics treatments including electromagnetic radiation-based treatments, heat treatments, and RF treatments, medical sensors are necessary for the radiation of energy.
- In the case of in-vivo magnetic 3D navigation, sensors help to employ a local or external magnetic field.
Sensors consist of electromagnetic coils or micro-coils. Therefore, the production process of the sensors involves a micro-coil winding process. Designers of the sensors also need to accomplish the geometric and electromagnetic requirements of the clients. To fulfil these requirements and maintain the miniaturized size, modern manufacturers use ultra-fine copper wire of 59 AWG (0.009 mm or 9 microns) for producing the micro-coils. An efficient micro-coil may consist of 1000 winding and even after these windings, the coil will have the size of a cross-sectional area of a pin.
A crucial part of the micro-coil production process is building a connection between two ultra-fine wires of similar or different thicknesses. For building an efficient connection between the wires, Thermo-compression bonding technology is useful. This method is not only useful for connecting wires of similar diameter and material but also efficient for different diameters and materials. With the help of this method, manufacturers can build corrosion-free, strain-free, highly durable, and reliable connections.
Applications of the Sensors:
- Diagnostics: Physical, flow and glycemic sensors have a critical role in wireless communication.
- Therapeutic Applications: Sensors are necessary for electrophysiological treatments, electricity-based ablations, and other therapeutic applications.
- Navigation and Orientation: For the detection of inter-body tagging, targeted radiation catheters, stent positioning, targeted drug delivery, and implanted markers, sensors have critical applications. Apart from that, sensors are also useful in endoscopic, colonoscopy, gastroscopic, and laparoscopic treatments. Sensors have also many other critical applications in the biomedical field including dental and orthopedic treatments.