Biomedical Sesors Disadvantages

Biomedical Sensors- Advancing Medical and Biotechnology

Introduction to Sensors

Sensors are regarded as small, tiny and intelligent devices that are used to measure physical variable like Temperature, Humidity, Gas, Velocity, Flow Rate, pressure and many others. According to American National Standards Institute, “A Sensor is defined as device which provides a usable output in response to a specified measure.”

A Sensor acquires a physical quantity and converts it into a signal suitable for processing e.g. Optical, Electrical, Mechanical. In today’s world, the words “Sensor” and “Transducer” are used in abundance especially in the description of measurement systems. The word “Sensor” is derived from entire meaning ‘to perceive’ and “Transducer”

On the basis of Sensor Placement: Strip Sensors, Wearable Sensors, Implantable Sensors, Invasive/Non-Invasive sensors, Ingestible Sensors.

Biomedical Sensors Kits Available in Market for Patients Diagnostics

Biosensor is a kind of device which senses biomaterial and its concentration, and which converts the biosignal into electrical signal.

Special features of biosensor are the following:

1. Biological active material immobilized is used as catalyst, and expensive reagents could be repeatedly used to detect same biological parameters.

2. Biosensor has intensive specificity. Biomaterial only senses definitive ingredient and it is not affected by colour and concentration of measured material.

3. Biosensor could quickly analyse the result of the measurand.

4. Biosensor’s accuracy is very high; which relative error could reach one percent.

5. Biosensor’s analysing system is very simple.

6. The cost of biosensor is very low.

Top Next Generation Biomedical Sensors

A. DMI

DMI stands for DNA Medical Institute. It is a portable, compact device that uses a single drop of blood to perform hundreds of clinical lab tests, telling patients with gold-standard accuracy whether they have anything from the common cold to Ebola. DMI has a wide reach, focusing on global health, emergency and critical care, and space

Doctors have long associated the most severe, chronic forms of headache with the sphenopalatine ganglion (SPG), a facial nerve bundle, but haven 't yet found a treatment that works on the SPG long-term. A technology evolved named “Electronic Aspirin” which is a patient-powered tool for blocking SPG signals at the first sign of a headache. The system involves the permanent implant of a small nerve stimulating device in the upper gum on the side of the head normally affected by headache. The lead tip of the implant connects with the SPG bundle, and when a patient senses the onset of a headache, he or she places a handheld remote controller on the cheek nearest the implant. The resulting signals stimulate the SPG nerves and block the pain-causing