How medical delivery devices actually work.

An insulin syringe is graduated in units, not millilitres, and its needle is fixed to the barrel rather than screwed on. A 1 mL barrel carries 100 units; a 0.5 mL barrel carries 50 units across the same length of barrel, so the markings sit further apart and small doses are easier to read accurately.

The general-purpose syringe, made from 1 mL up to 60 mL. Two things vary and both appear on every tender document: the capacity, and the tip type. A luer slip tip pushes on by friction; a luer lock tip threads on and cannot separate under pressure. The 60 mL is different again — it takes a catheter tip for irrigation and feeding, and no needle at all.

Every syringe holds a little medication in the hub after the plunger has bottomed out. It was drawn from the vial, it was paid for, and it goes in the sharps bin. A low dead space design shapes the plunger tip to occupy that cavity, so almost nothing remains. Across a vaccination programme, those fractions add up to whole extra doses from the same stock.

An insulin pen carries its own cartridge; the needle is the part the patient replaces at every injection. Insulin is meant for the subcutaneous layer — the fat beneath the skin. Too long a needle can pass through it into muscle, where insulin is absorbed faster and less predictably.

K-Pick supplies pen needles from two Korean manufacturers, Sungshim and Insufine. The selector below is drawn from the Sungshim range; the Insufine range is listed on its own page.

A needle size combines gauge, which describes shaft diameter, and length, which describes how far the shaft extends beyond the hub. The numbering runs opposite to width: a lower gauge number indicates a wider shaft.

Sungshim single-use needles use color-coded hubs and are available in multiple gauge-and-length combinations. The explorer compares published sizes only; clinical selection depends on the medication, route, patient, and facility protocol.

Sungshim Nano Needles combine fine 30G–34G shafts with a micro-polished needle point. Gauge still describes shaft diameter, while length remains a separate measurement selected from the manufacturer’s available combinations.

The magnified view explains the shape and finish of the bevel without claiming a measured pain reduction. It is a product-design comparison, not a recommendation for a particular injection or patient.

Opening a glass ampoule sheds microscopic glass fragments into the medication inside it. Drawing that medication up with an ordinary needle carries those fragments into the patient. A filter syringe and a filter needle both solve this with a 5 micron membrane that traps glass, rubber and other particulates on the way in.

The difference between the two is workflow. A filter syringe filters as you draw and then injects. A filter needle is a draw-up device only — it is removed and swapped for a normal needle before the injection is given.

Note: filter syringes and filter needles are manufactured by Sungshim but are not yet part of the K-Pick range. Contact us if you would like them included in a quotation.

An infusion set creates a fluid path through the spike, drip chamber, tubing, roller clamp or regulator, and patient connector. Each part supports controlled delivery while allowing the line and chamber to be observed.

Before connection, a trained healthcare professional primes the chamber and tubing to remove air, then sets and monitors the prescribed flow according to the product instructions and facility protocol. The interactive clamp shows relative visual states only.