When you think of a medical device, what comes to mind?
You probably have a pair of disposable syringes that you can use to clean your teeth.
Or you might have a sterile, metal syringe that you keep on hand for emergencies.
Then there’s the sterile, disposable tube that’s used to insert a tube of blood into your arm.
Or a piece of plastic that’s just there to keep it safe from getting into your pocket or purse.
There are so many options.
But one thing you may not have thought about before, is how these devices work.
When you’re not using a syringe, you’re carrying a small device that you’re holding in your hand.
This device contains the blood vessels, nutrients and antibodies that are needed to help the body heal.
It’s the unit of blood that helps our body repair itself.
The plastic tube is then used to drain the blood.
When the blood is drained, it’s removed from the device and placed into a bag that is then kept at a safe temperature for several hours to help it stay healthy.
But what if you need a sterile and disposable tube of the same thing?
What if you’re a little concerned about the way it could get into your purse or pocket?
How long would you keep it in your pocket?
Or could it be left out in the sun for days or weeks at a time?
That’s what the researchers at the University of North Carolina at Chapel Hill are now investigating.
In their study, the team looked at the blood loss caused by the use of two types of syringing machines.
One was made of metal tubing that was placed in a tube that was heated and cooled by air and was kept at 60 degrees Fahrenheit for 30 minutes.
This is called a “pressure chamber.”
The other type of syringe used in the study was a plastic tube that had a metal frame on top that was attached to a pressure cooker.
This was an ideal device for patients who needed to get the blood to a lab in a matter of minutes.
But, it was not a good device for people who wanted to use the syringe for other purposes.
“When people were getting their blood into a pressure chamber, they didn’t feel as good as they should have when they got their blood out of the chamber,” says coauthor David O’Leary, an assistant professor in the Department of Surgery at UNC School of Medicine.
“So they thought, ‘What’s the point of having a pressure-controlled syringe?'”
When the researchers tested the safety of the pressure chamber-based syringe with the device-based model, they found that both syringers were safe for a range of purposes.
For example, the plastic syringe was used for about 5% of patients in the control group.
The metal syringer was used only about 8%.
But when patients were asked to use it more often, their blood loss rates went up.
In fact, it actually improved when the plastic tube was used more often.
The plastic tube had the advantage of being small and disposable, so it was a less expensive alternative to using the pressure-activated syringe.
“So, if you are a patient who has a medical condition that requires you to take care of a lot of blood loss, the metal syriing machine could be a better option than the pressure syringe,” O’Donnell says.
“But, if the patient needs to take the metal tube to a laboratory for a lot more blood loss to be detected, the pressure model could be more convenient.”
In addition to helping patients recover faster, the researchers also found that the plastic and metal syries had different ways of detecting the presence of different types of antibodies, which are the blood cells that are necessary to repair and grow new blood vessels in the body.
The researchers were able to find that the metal version of the syringy used by the control patients was more sensitive to antibodies than the plastic version.
This may be because the metal device has more surface area than the metal-tube syringe and therefore more blood cells are attracted to it.
“If the metal needle is a bit smaller than the needle on the pressure cooker, that’s going to have more of a chance of being able to detect antibodies, but the metal needles have a larger surface area,” O`Leary says.
“The smaller surface area means the more surface surface area that it has to move around to find its way in.”
If the researchers were to use a different pressure chamber model, the results would be different.
O’Leeson says that it would be important to test the difference in sensitivity with different types and sizes of needles.
“You might want to do some experiments with the pressure, pressure- and pressure-based models to see if the metal model has a lower chance of detecting antibodies,” he says.