Syringe

Details Syringe Syringe

1981-04-20

1983-01-11

Yasko, John D.

Surgery

Respiratory method or device

Ozone or ion generation

128218PA, A61M 100

Patent

active

043677398

ABSTRACT:
A syringe comprising a cylindrical barrel with a wall at one end with a nozzle and with a threaded actuating rod extending from its other end, the rod carrying a piston in fluid tight engagement with the inner wall of the barrel. The rod also carries a collar with threads which mate with the rod threads, and the collar has slots which engage projections on the barrel and prevent movement of the collar relative to the barrel but which permit the collar to be disengaged readily from the barrel. A manually engageable knob is rotatably mounted on the rod at its end remote from the piston and is interconnected with the rod by a compressible, spiral spring. A ratchet wheel is mounted on the rod so as to rotate therewith and is adjacent the knob. The knob carries a spring biased pawl in the form of a tooth which is engageable with the ratchet wheel teeth. As the pressure on the fluid in the barrel is increased, the spring is compressed and the knob rotates with respect to the rod causing the pawl to assume a position dependent on the pressure.

REFERENCES:
patent: 605386 (1898-06-01), Brown
patent: 4189065 (1980-02-01), Herold

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