Strain Sensors for Medical Industry

//Strain Sensors for Medical Industry

Strain Sensors for Medical Industry

How Strain Gauges Benefit the Medical Industry

Strain gauges are arguably one of the most important sensors that implement electrical measuring techniques when applied to the measurement of mechanical applications. As their name suggests, strain gauges measure strain. Strain sensors convert force, pressure, tension or weight into a measurable electrical resistance. Technical definitions explain strain as consisting of tensile and compressive strain. The strain gauge then registers these readings as  either a positive or negative symbol. This ability means strain sensors can detect expansion and contraction on the mechanical objects they are measuring. This is useful since strain gauges can be used to deduce the external forces applied to any stationary object and define the amount of displacement and deformation that occurs.


The versatility of strain gauges has led to their implementation in several fields. Aside from the aerospace and automotive industries, the medical industry is now increasingly relying on the use of strain gauges. Strain may be the result of forces, pressures, moments, heat, structural material changes etc. The ability of the strain sensor to measure the ratio of resistance change of a material body dependent upon the force put onto it has prevalence in the medical field. Important hospital equipment, like syringe pumps and kidney dialysis machines, rely on wireless strain gauges to discover optimum fluid flow rates. Larger objects, like CT scan machines and mammography machines also implement wireless strain gauges. The information that the devices gather translate into providing patients with smooth, safe and accurate readings. Strain sensors are used heavily in the medical industry, in both small and large applications. At times, strain sensors can mean the difference between life and death.

Purchasing Strain Sensors

With designs becoming increasingly more complex, most wireless strain gauges are produced by single entities. These businesses develop their sensors according to unique registered patents, which can make replacing parts fairly simple. Original equipment manufacturers, or “OEMs,” have seen the practical applications of wireless force transducers aid increased sales. The contribution of this technology has seen a reduction of man hours required for maintenance due to its precision and effectiveness. The majority of original equipment manufacturers produce strain sensors that are interchangeable with product lines. Other OEMs are devoted to custom solutions as provided through extensive research and development and trial periods.  Although medical device OEMs must comply with federal regulations, their in-house expertise allows them to expedite the building of samples and performance tests. A reliable supplier of these items knows the impact strain gauges have in the field and are committed to quality assurance.

Wireless Strain Gauge Uses

Along with mammography machines and CT scan machines, wireless strain gauges have been implemented in many other medical devices. Minimally invasive remote robotic surgeries have strain sensors that precisely measure the depth of force and rotational force during hip surgeries. Patient lify systems are another area in which strain gauges have been applied. Improved movement rates enacted by strain gauges means easier transitions from beds, gurneys and wheelchairs, as well as the reduction of bed sores thanks to easier turning. Wireless transducers work in this regard by monitoring the precise movement and force applied to the patient. This in turn leads to more accurate readings, a great advancement in this technology. Strain gauges are also used in insulin pumps. The sensors help regulate the flow of fluid the patient receives, ultimately achieving more accuracy in dosages and reducing wait times. All these applications have made the strain gauge a top requirement for newer medical devices, as it is clearly proven in the field that they’re effective.

Strain gauges have seen such a boost because of their relatively low cost and simple construction. OEMs have been including them in their products. They understand the market for medical devices is very competitive and, therefore, must provide the best devices that release the full potential of medical technology.

By |2018-07-27T14:15:20-04:00July 26th, 2018|Categories: True Sensors|Comments Off on Strain Sensors for Medical Industry

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