microneedle

The answer lies in the length of each microneedle.

So how are microneedle arrays able to inject drugs without causing pain?

A microneedle had squeezed out all the genetic material from a freshly harvested human egg.

The microneedle, which is "pointed projections fabricated into arrays that can create vaccine delivery pathways through the skin".

The efficiency of microneedle drug delivery remains a challenge because it is difficult to ascertain if the microneedles effectively penetrated the skin.

Intraocular pressure measurement IOPs were measured using a microneedle system as previously described [ 11, 54].

One microneedle alone could deliver only a small dosage of medication, but the whole array of microneedles could dispense a considerable amount.

"If we had proper medical facilities we could treat him and get his pressure down to normal," Marguerite was muttering as she pressed the microneedle syringe home.

PZD uses a glass microneedle to cut the zona pellucida which makes it a mechanical dissection method that typically needs skilled hands to perform the procedure.

Each microneedle is thinner than the diameter of a human hair and less than 0.1 millimeters in length - just long enough to break through the outer layer of your skin.

Because each microneedle is so short, it penetrates through the outermost layer of your skin, called the stratum corneum, but doesn't reach your skin's pain receptors (located slightly deeper).

He said he hoped one product in that market would be what his group was developing at Georgia Tech: a microneedle patch for delivering vaccines, DNA drugs and other large, unwieldy molecules.