Electronic Pills: Advantages and Disadvantages

This page explores the pros and cons of electronic pills, outlining their benefits and drawbacks.

What is an Electronic Pill?

Introduction:

After years of research, wireless devices have been developed in capsule form for various disease analysis and treatment applications. These electronic pills aim to replace invasive methods like catheters, endoscopic instruments, or radioisotopes when collecting information about the digestive tract. Drug delivery via electronic pills can be precisely controlled with onboard electronics, enabling adaptable delivery patterns not achievable through other methods.

Image Courtesy: MEEE Services

As shown in the image, an electronic pill typically consists of a drug reservoir, delivery pump, Microcontroller Unit (MCU), wireless transmitter/receiver, sensors, and other components. Electronic pills are either swallowed and pass through the gastrointestinal tract, or they are implanted under the skin.

Electronic pills can be classified into two main types:

• Data Collection Pills: These pills house a camera and other parts that collect data from disease-infected areas and transmit it to an external system for further analysis.
• Sensor Pills: These pills contain only sensors used to measure pH levels, temperature, oxygen levels, and other relevant parameters.

Benefits or Advantages of Electronic Pills

The following are the main benefits of using electronic pills:

• Disease Detection: They can be used for early disease detection and to identify abnormalities within the body.
• Small Size: Their small size allows them to easily move through the digestive system.
• Accuracy and Effectiveness: They offer a high degree of accuracy, precision, and effectiveness in their intended function.
• Sensitivity and Reliability: They offer high sensitivity, good reliability, and long lifetimes.
• Energy Efficiency: They have a long cell life (around 40 hours) with low power consumption (approximately 12.1 mWatt), low current (about 3.9 mA), and low voltage (about 3.1V) requirements.
• Biocompatibility: They are made of biocompatible materials that don’t cause harm to the body.

Drawbacks or Disadvantages of Electronic Pills

Here are the main challenges and disadvantages associated with electronic pills:

• Risk of Obstruction: Patients with gastrointestinal structures or narrowing are not ideal candidates due to the risk of obstruction. However, nanotechnology-based motors, about the size of a grain of rice, are being developed to help overcome this issue.
• Limited Camera Control: For camera-type electronic pills, controlling the camera’s behavior can be challenging. Bi-directional telemetry cameras are helping to address this limitation.
• Potential for Getting Stuck: The electronic pill can get stuck if there’s a partial obstruction in the small intestine.
• High Cost: They can be very expensive, making them unaffordable for some patients.
• Single Use: They are generally not reusable.