SAS 7 Flashcards
An aerosol valve consists of many different parts and is assembled USING HIGH-SPEED PRODUCTION techniques.
Continuous spray valve
is used to attach the valve proper to the container
Mounting cup
- made from Nylon or Delrin
- contains opening at the point of the attachment of the dip tube
Housing
- Made from Buna-N and Neoprene rubber
Gasket
- Made from polyethylene and polypropylene
Dip tube
is applicable in dispensing potent medication
Metering valves
allows for easy opening and closing of the valve
Actuators
these actuators are capable of “MECHANICALLY” breaking a stream into fine particles by causing the stream to swirl through various channels built into the actuator
Spray actuators
this actuators dispenses semisolid products like ointments
Solid-stream actuators
This system is also referred as a two-phase system which consist of a vapor and liquid phase
Solution phase
This involves dispersion of active ingredient in the propellant or mixture of propellants
Suspension/Dispersion system
- Propellant is in the external phase
- emits foam then quickly collapses into liquid
Quick-breaking foams
Used to produce warm foam for shaving
Thermal foams
It consists of a pressure burette capable of metering small volumes of liquefied gas into the aerosol container under pressure
pressure filling apparatus
It consist of an insulated box fitted with copper tubings and the tubings are coiled to increase the area exposed to cooling.
Cold-filling apparatus
these systems are those that use repetitive intermittent dosing
Delayed release
these systems designed to achieve prolonged therapeutic effect
sustained release
these system achieves slow release of drug over an extended period of time
Controlled release
these system is slower than normal manner at predetermined rate
extended release
targets diseased organ or tissue
site-specific targeting
targets particular receptor for a drug within an organ or tissue
receptor targeting
these system provides a continuous supply of drug over an extended period of time
Prolonged release system
it shows the movement of drug molecules from a region of a HIGHER CONCENTRATION TO LOWER CONCENTRATION.
Diffusion sustained system
In this system, water insoluble polymeric material encases a CORE of drug.
Reservoir type
