The filiform needles are usually used in clinical treat-ment. Most of them are made of stainless steel. The com-mon filiform needles vary in length and diameter (Table 3-1. 3 2).
Table 3 – 1 Length of Different Filiform Needles
|
cun |
0.5 |
1.0 |
1.5 |
2.0 |
2.5 |
3.0 |
3.5 |
4.0 |
4.5 |
5.0 |
|
mm |
15 |
25 |
40 |
50 |
65 |
75 |
90 |
100 |
115 |
125 |
Table 3 – 2 Diameter of Different Filiform Needles
|
Gauge |
26 |
28 |
30 |
32 |
34 |
|
Dia.(cm) |
0.45 |
0.38 |
0.32 |
0.28 |
0.23 |
Clinically the needles ranging from gauges 28 - 32 in diameter and 1 - 3 cun in length are frequently used in clinical treatment. The needles are selected according to the patient's constitution, age, condition and regions to be punctured. The needles should be carefully examined before insertion. If the needle body gets rusty, crooked, or the area combined with the handle has become loose, or the needle tip is too blunt or hook-like, it will affect insertion, cause pain or even break the needle. These kinds of needles should not be used.
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