Blood tubing sealing unit

Details Blood tubing sealing unit Blood tubing sealing unit

1983-12-02

1985-07-16

Envall, Jr., Roy N.

Electric heating

Metal heating

Of cylinders

219 1053, 219 1075, 156358, 1563801, H05B 606

Patent

active

045298599

ABSTRACT:
A solenoid operated moveable jaw cooperates with a fixed jaw protruding from a blood tubing sealing unit and formed as part of a relatively massive heat sink to effect seals on liquid filled plastic tubing upon transmission of RF energy timed to coincide with a degree of initial mechanical compression of the tubing by the jaws after the movement of the moveable jaw has been triggered by the tubing intercepting and reflecting a beam of light. Dissipation of heat from the exposed part of the fixed jaw is by convection. Dissipation of heat from the enclosed part of the fixed and moveable jaws and that produced by the circuitry generating the RF energy internal to the sealer unit is effected by channeling the heat by conduction from all internal heat sources to the bottom and rear plates of the unit and dissipating the heat from the bottom and rear plates to the atmosphere by convection.

REFERENCES:
patent: 4013860 (1977-03-01), Hosterman et al.
patent: 4186292 (1980-01-01), Acker

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