經渠 (Jīngqú) — Channel Ditch
Lung channel · point 8
Traditionally used for
- Nose & throat
- Cough & breathing
- Colds & fever
- Heart & circulation
Cautions & contraindications
- No moxibustion
- Avoid blood vessels
Location
On the anterolateral aspect of the forearm, 1 cun proximal to the palmar wrist crease (1 cun above LU9), between the radial styloid process and the radial artery.
How to locate: One cun above the wrist crease, immediately lateral to the pulsation of the radial artery — the cun position of the pulse.
Distances are in cun, a proportional unit — how to measure.
3D view
The 3D view is not available on this device. The 2D maps above show the same point.
Drag, or focus the model and use the arrow keys, to rotate; + and − to zoom; 0 to reset; Esc to close.
Needle diagram for the marked point — a schematic section through the skin, not the model.
3D anatomy: BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (licence). Subset, simplified and recoloured by Verscienta — changes and licence details.
Approximate placement, carried over from our 2D body map onto a single adult male model (BodyParts3D) and checked against the point's location text. Shown on one side of the body. Locate the point on your patient by the location text and palpation, not by this model.
- Cun on this part of the body
- From the cubital crease to the wrist crease: 12 B-cun (WHO 2008, General Guidelines, Proportional Bone (Skeletal) Measurements, p. 12). On the model, the cubital crease = line between the humeral epicondyles. On the model, the wrist crease = line between the radial and ulnar styloid tips.
- Needle angle and depth
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- Oblique (45° to the skin), 0.3–0.5 cun, proximal, avoiding the radial artery. Deadman P, Al-Khafaji M, Baker K, p. 86
- Perpendicular (90° to the skin), 0.3–0.5 cun, avoiding the radial artery. The direction is given in the source's words only. Deadman P, Al-Khafaji M, Baker K, p. 86
3D anatomy: BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (licence). Subset, simplified and recoloured by Verscienta — changes and licence details.
Needling
Cited needling
Techniques — the source gives these as alternatives:
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Oblique insertion — proximal, avoiding the radial arteryDepth 0.3–0.5 cunskindeeper
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Perpendicular insertion — avoiding the radial arteryDepth 0.3–0.5 cunskindeeper
Depths describe average adult habitus in the cited population, never a single safe number for the patient in front of you. Palpate and adjust.
Sources (1)
- Deadman P, Al-Khafaji M, Baker K. A Manual of Acupuncture. Hove: Journal of Chinese Medicine Publications; 1998 — p. 86 Supports: techniques (names this point)
Site notes · not cited
- No moxibustion
- Avoid blood vessels
Functions
- Descends Lung qi and relieves cough and wheezing
- Opens the pores and expels wind
- Clears the Lung and benefits the throat
- Opens the channel
Indications
Balance Method partners
Under Dr. Tan's six systems, LU8 at the wrist balances these channels at the regions its segment images.
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1. Same Chinese nameSpleen channelAnkle, Heel · Mirror (arm ↔ leg)Hip & groin, Buttock · Reversed mirrorFront of neck, Nape of neck · Image, head at the hand/footLower abdomen, Sacrum · Image, head toward the elbow/kneeSolve for the Spleen channel →
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2. Branching (Bie Jing / Zang Fu Bie Tong)Bladder channelAnkle, Heel · Mirror (arm ↔ leg)Hip & groin, Buttock · Reversed mirrorFront of neck, Nape of neck · Image, head at the hand/footLower abdomen, Sacrum · Image, head toward the elbow/kneeSolve for the Bladder channel →
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3. Interior–exterior pairLarge Intestine channelWrist · Same segment, opposite sideFront of neck, Nape of neck · Image, head at the hand/footLower abdomen, Sacrum · Image, head toward the elbow/kneeSolve for the Large Intestine channel →
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4. Chinese clock oppositeBladder channelAnkle, Heel · Mirror (arm ↔ leg)Hip & groin, Buttock · Reversed mirrorFront of neck, Nape of neck · Image, head at the hand/footLower abdomen, Sacrum · Image, head toward the elbow/kneeSolve for the Bladder channel →
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5. Chinese clock neighbourLiver channelAnkle, Heel · Mirror (arm ↔ leg)Hip & groin, Buttock · Reversed mirrorFront of neck, Nape of neck · Image, head at the hand/footLower abdomen, Sacrum · Image, head toward the elbow/kneeSolve for the Liver channel →
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6. Same channelLung channelWrist · Same segment, opposite sideFront of neck, Nape of neck · Image, head at the hand/footLower abdomen, Sacrum · Image, head toward the elbow/kneeSolve for the Lung channel →
Classical calendar method · 子午流注
When the tables open LU8
The hours Zi Wu Liu Zhu names this point at, by method. Times are the double-hour's start in UTC.
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辛卯 05:00–07:00 Na Jia Fa, 乙-day sequence · Jing-River (經)
「辛卯經渠是肺經」
Next: Mon 19 Oct, 05:00
A classical reference, not a recommendation: the tables say when the method opens this point, not that it is the point to needle. Open points by the hour →
Sources
- World Health Organization. WHO Standard Acupuncture Point Locations in the Western Pacific Region. Manila: WHO Regional Office for the Western Pacific, 2008. (Location.)
- Focks C, ed. Atlas of Acupuncture. Edinburgh: Churchill Livingstone Elsevier, 2008. (Locating method and actions.)
📝 Notes
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