Tear Delivery for an ICU settingTear Delivery for an ICU settingSenthil PremrajSenthil Premraj

Kelly clauseKelly clauseBrad LomagoBrad Lomago

Dr. Puwat CharukamnoetkanokDr. Puwat CharukamnoetkanokDr.Mingui SunDr.Mingui Sun

Jan 18,2005Jan 18,2005

Project and Personal OverviewProject and Personal Overview• Target: Patients in ICU suffering from dry eyes require artificial tear at Target: Patients in ICU suffering from dry eyes require artificial tear at

regular intervalsregular intervals

• A device which can be easily positioned around the eye socket and will A device which can be easily positioned around the eye socket and will release drops in a dispersed manner at regular time intervalsrelease drops in a dispersed manner at regular time intervals

• Personal Task : Personal Task : – Device a circuit which will allow the user to control the time Device a circuit which will allow the user to control the time

intervals for deliveryintervals for delivery– Research various ways to establish a link between the circuit and Research various ways to establish a link between the circuit and

the delivery component along with the other members the delivery component along with the other members – Calibrate different values of the circuit to make the control user Calibrate different values of the circuit to make the control user

friendly friendly – Model the control component so that it can be directly used by the Model the control component so that it can be directly used by the

user user

Acheivements and GoalsAcheivements and GoalsAcheivements : The principle behind the circuit Acheivements : The principle behind the circuit

has been designed and testedhas been designed and testedUsing any timer chip in astable mode of operation Using any timer chip in astable mode of operation

and using a potentiometer to control the interval of and using a potentiometer to control the interval of delivery delivery

• Information on electronic injectors for Information on electronic injectors for engines and electronic valves are gatheredengines and electronic valves are gathered - - ClippardClippard– The electronic valve mechanism can be either The electronic valve mechanism can be either

charge induced or through on and off mode.charge induced or through on and off mode.• Goals : Calibrate different values for Goals : Calibrate different values for

potentiometers and resistors to make it user potentiometers and resistors to make it user friendly. friendly.

• The model should be built around the circuit The model should be built around the circuit and needs to be sturdyand needs to be sturdy – Practical building problems like linking the Practical building problems like linking the

potentiometer to the knob potentiometer to the knob • Milestone: 2/1/05 – Decipher and order partsMilestone: 2/1/05 – Decipher and order parts

– 3/1/05 – working circuit and valve- 3/1/05 – working circuit and valve- CalibratedCalibrated

– 3/15/05 – fully developed control and link3/15/05 – fully developed control and link