What Are the Principles Behind Saline Drip Package Design?

[hanson]

Design of saline drip package??

Hi all.
I am studying the principle of the saline drip package in order to modify it to suit my slow-flow-rate delivery system.
But I can hardly find any explanation of the principles involved.
Do anyone have such links? or could you explain the principles of such a drip package?
What's so special with such a design? Especially the thing encircled.
It is said that the volume of each droplet remains the same all the time. But, so what?

 

[FredGarvin]

I always thought that, whatever that part is called, is used to set a constant flow rate. Since most medicines I have seen are based on volume, it makes sense to me. I would imagine it is simply an orifice that sets the flow. I'll join the hunt and see if I can find anything.

 

[stewartcs]

Well here's what I could find on it. Apparently the typical setup is a gravity feed system.

Infusion equipment
A standard IV infusion set consists of a pre-filled, sterile container (glass bottle, plastic bottle or plastic bag) of fluids with an attached drip chamber which allows the fluid to flow one drop at a time, making it easy to see the flow rate (and also reducing air bubbles); a long sterile tube with a clamp to regulate or stop the flow; a connector to attach to the access device; and connectors to allow "piggybacking" of another infusion set onto the same line, e.g., adding a dose of antibiotics to a continuous fluid drip.

An infusion pump allows precise control over the flow rate and total amount delivered, but in cases where a change in the flow rate would not have serious consequences, or if pumps are not available, the drip is often left to flow simply by placing the bag above the level of the patient and using the clamp to regulate the rate; this is a gravity drip.

A rapid infuser can be used if the patient requires a high flow rate and the IV access device is of a large enough diameter to accommodate it. This is either an inflatable cuff placed around the fluid bag to force the fluid into the patient or a similar electrical device that may also heat the fluid being infused.

Source: http://en.wikipedia.org/wiki/Intravenous

Hope this helps...

CS

 

[hanson]

I always thought that, whatever that part is called, is used to set a constant flow rate. Since most medicines I have seen are based on volume, it makes sense to me. I would imagine it is simply an orifice that sets the flow. I'll join the hunt and see if I can find anything.

Thanks. Such a device can produce a constant flow rate as the amount of saline consumes?

 

[hanson]

Well here's what I could find on it. Apparently the typical setup is a gravity feed system.



Source: http://en.wikipedia.org/wiki/Intravenous

Hope this helps...

CS

Thanks. Let me have a look first.

 

[dental guy]

well the drip package has a controller by which you can adjust the frequency and flow rate of the medicine that has to be administered.