IEEE PROJECT BIOMEDICAL

APPLICATION-Automatic Anesthesia

Controller using Heart Beat Sensor

At the present time anesthetics, drugs which

induce loss of awareness, are often used for surgical

operations. A general anesthetic should cause a

progressive depression of the central nervous system

and cause the patient to lose consciousness. In

contrast, a local anesthetic will affect sensation at the

region to which it is applied.

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To maintain an adequate depth of anesthesia

without compromising patient's health, an

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anesthesiologist usually works as a multi-task

feedback controller to roughly regulate the drugs

titration while observing a variety of patient outcomes.

Automatic anesthesia controller design aims to

automatically regulate anesthesia levels by taking

account on several physiological measurements and

then frees up anesthesiologists for more important

tasks in operation.

This project designed using the PIC

Microcontroller aids in the control of feeding

Anesthesia for patients during Surgery times. This

project Consists of a Heart Beat sensor to detect the

Heart beat rate and a Mechanical Arrangement with

syringe for feeding anesthesia to the patients.

Operation:

First the Syringe is filled with anesthesia

liquid and kept in the mechanical arrangement. And

the Heart beat rate is calculated. Then the Liquid is

slowly injected into patients body and the changes in

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the Heartbeat rate is observed. Then according to the

Heart beat rate the Liquid is injected into the body.

The injecting process is controlled by the

movement of the Stepper Motor.

The Complete Status is Indicated in LCD with

online Updations.

Hardware Requirements

1. PIC microcontroller PIC16F877

2. Heart beat Sensor

3. Power supply circuits

4. Stepper Motor Driver Circuits

5. Stepper Motor

6. Mechanical model constructed with syringe

Software:

1. Hitech C compiler

2. MPLAB IDE V6.0

Application:

1. Clinical applications

2. Operation Theaters

Advantages:

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1. PIC Microcontroller based operation

2. Syringe can be pre adjusted to fill the anesthetic

fluid

3. Stepper motor is used for taking accurate ml of the

fluid

4. better than human control

5. Controlling Analgesia Level through Heart beat rate

Analysis

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Mehanical Arrangment (Model)

BLOCK DIAGRAM

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MicrocontrollerBoard

PIC16F877

SignalConditioning

Board (Amplifier)

LCD Display

Steppermotor Driver

Stepper Motor

Heart Beat Sensor

+5VPower Supply

+12VPower Supply

+12V POWER SOURCE

GND

Emitter

Detector

Patients Finger