Verscienta
PC9

Zhongchong

Star

中衝 (Zhōngchōng) — Central Hub

Pericardium channel · point 9

Not yet clinically reviewed

Jing-Well pointWood pointWood point of the Pericardium channelTonification (mother) point

Traditionally used for

  • Colds & fever
  • Nerves & recovery
  • Heart & circulation

Location

At the centre of the tip of the middle finger.

How to locate: The point is at the very tip of the middle finger, at its most distal point.

Distances are in cun, a proportional unit — how to measure.

Body map, front: PC9 · Hand
Fig. — PC9 · Hand After Albinus, 1747
Body map, front: PC9 · Hand

PC9 · Hand · Albinus, Tabulae sceleti et musculorum, 1747

Bones of the hand, dorsal — Gray's Anatomy plate
Bones of the hand, dorsal Gray's Anatomy, 1918
Bones of the hand, dorsal — Gray's Anatomy plate

Bones of the hand, dorsal · Gray's Anatomy, 1918

3D view

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.

Needle angle and depth
  1. Perpendicular — not drawn: WHO gives no proportional measurement for this part of the body.
  2. Oblique, directed proximally — not drawn: WHO gives no proportional measurement for this part of the body.
  3. Prick to bleed — not drawn: no cited depth in cun.

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:

  1. Perpendicular insertion
    Depth 0.1–0.2 cun
    skindeeper
  2. Oblique insertion — directed proximally
    Depth 0.1–0.2 cun
    skindeeper
  3. Prick to bleed

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)
  1. Deadman P, Al-Khafaji M, Baker K. A Manual of Acupuncture. Hove: Journal of Chinese Medicine Publications; 1998 — p. 382 Supports: techniques (names this point)

Site notes · not cited

Depth: 0.1 cun
Angle: Shallow perpendicular, or prick to bleed
Bleeding technique: Pricking PC9 to bleed is a standard first-aid measure in collapse, heatstroke and febrile convulsion.

Functions

  • Restores consciousness and rescues collapsed yang
  • Clears heat from the Heart and Pericardium
  • Settles internal wind

Indications

Loss of consciousness, collapse and heatstrokehigh feverchildhood convulsionscardiac painstiffness and swelling of the tongueshock

Balance Method partners

Under Dr. Tan's six systems, PC9 at the hand balances these channels at the regions its segment images.

Classical calendar method · 子午流注

When the tables open PC9

The hours Zi Wu Liu Zhu names this point at, by method. Times are the double-hour's start in UTC.

  • 癸酉 17:00–19:00 Na Jia Fa, 癸-day sequence · Na (納) point

    「癸酉中衝包絡連」

    Next: Sat 17 Oct, 17:00

  • 亥 21:00–23:00 Na Zi Fa, PC channel · reinforce (補)

    「補用亥時，中衝，為井木」

    Next: Wed 14 Oct, 21:00

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 →

Clinical Notes

One of the twelve Jing-Well points bled together (the Shi Xuan technique is related) in acute collapse and windstroke.

Combinations Using This Point

Resuscitation Points — GV26 and the Jing-Well Bleeding

GV26 with strong stimulation, and the Jing-Well points bled, for collapse, fainting and loss of consciousness.

Similar Points

Ranked by shared patterns and conditions

Laogong how are these connected? (Laogong) Shaochong how are these connected? (Shaochong) Zhaohai how are these connected? (Zhaohai) Zhongting how are these connected? (Zhongting)

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.)

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