The Current METHOD

Liquid pharmaceuticals, such as the small selection shown below, are stored in sealed glass ampules or other storage devices that require filtration. To use pharmaceuticals, healthcare workers must open the glass ampule by snapping the glass neck. As a result, glass shards may be produced. These shards must be removed from the pharmaceuticals before injection.






Vitamin K

The process of filtering pharmaceuticals is a multi-step process requiring a filter needle or filter straw, in addition to a hypodermic needle. The glass shards are removed by drawing up the solution through a filtered needle or straw secured to the end of a syringe. Once the solution is in the syringe, the filter needle is removed from the syringe. Finally, a new needle is attached to the syringe to administer the pharmaceuticals.

Problems with the Multi-Step Process

The multi-step process is fraught with risks, including the following. A single needle solution would decrease the risk of needle sticks and errors by healthcare providers who don’t have readily available filter needles or those trying to cut corners by not complying with safe practice measures.

Contamination from handling creates a risk of sepsis

Changing the needle delays treatment in time-sensitive situations

Extra packaging for two needles is wasteful


CarrTech has developed and patented a safer, cheaper, greener solution: The FROG™ filter. It is a single in-line filter and needle all-in-one package. The FROG™ is comprised of an outer cap, an inner filter cover (hermetically sealed according to ISO certified and FDA guidelines),  an inner hypodermic needle, and a filter located at the tip of the needle.

Pharmacist Testimonials

The FROG™ represents a novel, one-step process that decreases the risk of errors, sepsis, and waste. See what other medical experts had to say about the work CarrTech is doing!

"Most importantly, something--this is very simple, very simple to do. And most important is it saves time. In emergency situations, or anywhere with any doctor, it saves time. The second thing is it prevents needle sticks that, you know, that you don't have to change from one needle to another needle. So it prevents needle sticks for the physicians, nurses, and the staff."

Infectious Disease Specialist

"So to me, every single thing I mentioned a couple of seconds ago is pretty much eliminated with the frog needle. You're not having to transfer from one needle to another. It's already on there. You're not having really to manipulate the ampule much more than the first time that you're doing it. And you're not having to take one needle, open it up to set it down, taking one-off, set it down, and put the other one on. So to me, it solves all the problems that exist within the aspects of sterile compounding or sterile IDs."

Dr. John Kutzko, PharmD
Compound Pharmacy Owner

FRequently asked questions

Answers to common questions about CarrTech and the FROG™ filter needle.


Looking for more resources?

Check out our YouTube channel to see more in-depth videos and demos, read our founder's article in the WMSHP, or contact us for more info!