Medical Dissection Lab

Experiment-6

Product Name: Syringe Pump

Team 4

Chaitanya kumar D (ED11B045)

Abstract:

To disassemble the Syringe Pump and study its different Parts and the mechanisms involved.

To reassemble the product.

We performed a step-by-step dissection of the product and analyzed the design principles and working mechanisms of all the parts involved.

Introduction:

A syringe pump is a small infusion pump used to gradually administer small amounts of fluid to a patient or for use in chemical and biomedical research. The most popular use of syringe drivers is in palliative care ,to continuously administer analgesics (painkillers), antiemetic’s (medi

cation to suppress nausea and vomiting) and other drugs .This prevents periods during which medication levels in the blood are too high or too low, and avoids the use of multiple tablets. Syringe pumps are also useful in microfluidic applications, such as micro reactor design and testing, and also in chemistry for slow incorporation of a fixed volume of fluid into a solution.

Tools Used: Screw Drivers of appropriate sizes.

Specifications:

Flow Rate: 0.5-200 mL/hr.

Volume Accuracy: ±5 %.

Weight: 15 lbs (7 kg).

Battery: 8VDC, 2.5Ah lead acid Battery (4 hours of run time).

4line LCD and 4 digit LED display.

Dissection Procedure:

Task Tools used

Remove the Case Screw Driver

Remove the cables Hand

Remove the PCB Screw Driver

Functional Decomposition:

Component Sub part Sub-Function Power Supply PWA

Motor

circuitry

Battery

charger

Control the number of

steps to be taken by

the stepper motor

Door and

syringe

position

sensor

motor driver

Printer and

audio driver

Check whether the

door was locked.

Provide power supply

to motor ,printer and

alarm

User interface LCD Display

LED Display

Alarms

Multipurpose

buttons

Display dosage and

flow rate values

Display stored data of

previous use

To signal end to

process

Display whether the

device is

charging ,running on

battery

CPU PWA CPU

RAM

EPROM

A/D

Convertor

RTC clock

Process the values

entered by the user

Stores and values and

settings

Serve as internal clock

for the device

Convert analog to

digital

Calculate the amount

of steps to be taken

by motor

Pump Stepper

motor

Lead screw

Syringe

holder

Push the fluid down

the syringe and into

the patient

Hold the syringe

Product Architecture:

Syringe Pump

Power supply

PWA

CPU PWA Pump Display/user

Interface

Motor circuitry

Syringe sensor

Motor driver

Printer and

audio driver

EPROM

A/D Convertor

RTC Clock

RAM

Syringe

holder

Stepper

motor

Lead screw

LCD Display

LED Display

Buttons

Alarms

Geometric Layout:

Over all Function Structure:

Air

power supply

heat

Fluid Fluid Syringe Pump

Function Structure:

Suggested Improvements:

We can make it more compactable.

Try to make as touch screen display.

A servo motor can be used for smoothing

functioning and better feedback.

Conclusion:

In this experiment, we first disassembled the

product in order to perform product analysis by

reverse engineering process. The tool used for

disassembling was screwdriver. Based on this

exercise we made part-list of the product

comprising of part name and material. We also

listed the function of each part and prepared the

function structure of the product. We had a group

discussion on the product in order to increase our

understanding of it. From this experiment we learnt

to use various tools. This exercise was a good

example of product analysis by reverse

engineering process. We also learnt the

manufacturing and production of these

components.

Reference: http://en.wikipedia.org/wiki/syringepump