Double-blind evaluation of acupuncture treatment has not previously been reported. We investigated the possible advantage of analgesic effects of needle penetration compared with skin pressure using non-penetrating needles in a double-blind study. We conducted a double-blind crossover study of penetrating and non-penetrating placebo acupuncture trials. We recruited 56 healthy volunteers. After each application of electrical stimulation, the subjects rated the pain intensity using a numeric rating scale 0— comparing it with the baseline pain intensity before the needle was applied. We found no significant difference in analgesic effects between the penetrating and non-penetrating needle trials.
A double-blind placebo needle for acupuncture research
Acupuncture Just As Effective Without Needle Puncture, Study Shows -- ScienceDaily
Acupuncture [a] is a form of alternative medicine  and a key component of traditional Chinese medicine TCM in which thin needles are inserted into the body. Acupuncture is generally used only in combination with other forms of treatment. The conclusions of numerous trials and systematic reviews of acupuncture are inconsistent, which suggests that it is not effective. Acupuncture is generally safe when done by appropriately trained practitioners using clean needle technique and single-use needles. Scientific investigation has not found any histological or physiological evidence for traditional Chinese concepts such as qi , meridians , and acupuncture points, [n 1]  and many modern practitioners no longer support the existence of life force energy qi or meridians, which was a major part of early belief systems. Acupuncture is a form of alternative medicine. Acupuncture is generally only used in combination with other forms of treatment.
Acupuncture no better for menopause than 'fake' method, says researchers
Traditional Chinese acupuncture is no better than a fake version for treating menopause symptoms, says a new study. The University of Melbourne study involved Australian women aged over 40 who had at least seven moderate hot flushes a day. Half were given 10 sessions of standard Chinese medicine acupuncture in which thin needles were inserted into the body at specific points. The others had their skin stimulated with blunt-tipped needles, which has a milder effect without penetrating the skin. Lead author Dr Carolyn Ee said both groups may have improved due to the placebo effect or because attending a clinic to talk about symptoms could help.
Hari is the Japanese word for Acupuncture. Ironically this form of acupuncture has no penetration with the needles. The channel flow is regulated by "contact" needling which means a needle is held on the acupuncture point, which must be located very precisely by palpating the channel very lightly, and the Ki is sent through the acupuncturist to balance the yin and yang of the channels.