Device for aquapuncture, injecting water under pressure into acupuncture points on the body to relieve pain. The oldest jet injector was devised by the French physician Jean Sales Girons (1808-1879) in 1866. Notice sur quelques nouveaux instruments et appareils de chirurgie fabriqués par H. Galante (Paris: H. Galante & Cie, 1866), 43. Fig. 33.