The Structure and Specification

The filiform needles are widely used at present in clinic. It is made of gold, silver, alloy, etc., but most of them are made of stainless steel. A filiform needle may be divided into five parts :

• Handle the part webbed with filigree either of copper or stainless steel
• Tail the part at the end of the handle
• Tip the sharp point of the needle
• Body the part between the handle and the tip
• Root the demarcation line between the body and the handle

The length and gauge refer to the dimension of the needle body.

The common filiform needles vary in length and diameter.

Needles from Nos. 26 - 32 in diameter and 1 - 3 cun in length are most frequently used in clinic. The needle tip, in general, should be as sharp as a pine needle, the body is round and smooth, flexible and resilient, which is valued as the best quality. The filiform needles should be well stored to avoid damage. On manipulation, insertion of the needle should be neither too forceful nor too fast to prevent it from getting bent. If the needle tip touches the bones, the needle should be withdrawn a little to avoid bending.

Length cun mm

• 0.5 15
• 1.0 25
• 1.5 40
• 2.0 50
• 2.5 65
• 3.0 75
• 3.5 90
• 4.0 100
• 4.5 115
• 5.0 125

Gauge No Dia. ( cm )

• 26 0.45
• 28 0.38
• 30 0.32
• 32 0.26
• 34 0.22