This device is designed and sold for use only as indicated
This product is intended for use by or on the order of a physician. It is to be used by individuals who are
properly trained in medical suctioning procedures. Please read these instructions carefully.
A High Flow Bubble Barb fitting is provided to connect the regulator to a central suction source. Braid
reinforced tubing must be used to preclude the possibility of suction tubing collapse during extended
periods of use. The hose supplying suction to the regulator should have a vertical orientation to reduce
the possibility of kinking over time. Any deformation of this tubing may be indicative of a reduction in
flow to the suction regulator and accompanying patient circuit.
Always verify the regulator is attached to an appropriate source of suction, and that suction is present,
before attaching a patient collection circuit. This can be verified by turning the control valve to REG, and
adjusting the control knob to increase suction. The presence of suction can be audibly heard from at the
patient port of the regulator.
Suction regulators must only be attached to vacuum systems. Do not attach to compressed air,
nitrogen, or oxygen sources.
Do not cover, obstruct, or occlude the inlet of the interrupter where it is labeled ‘Do Not Occlude Vent’.
Do not attempt to calibrate this safety device. Return to the factory for appropriate service.
When used in conjunction with a venous return reservoir for cardiac bypass surgery: ensure that all air
detection and control devices are in proper working order, have all field suction pumps clear and
operating and monitor and control the fluid levels in the reservoir to prescribed limits.
When used for the purpose of vacuum assisted venous drainage for cardiac surgery, ensure proper
placement of cannulae and verify that venous drainage is properly occurring.
Suction catheters, collection canisters and suction tubing must be carefully evaluated and selected to
ensure adequate function for the specific clinical environment and intended field of use.
Always verify regulator operation (Spike, see page 4 for details) before use on a patient. Verify
operation by establishing the desired vacuum level with the collection circuit and suction catheter
attached to the regulator. Occlude the suction catheter and note that the indicated vacuum does not
rise by more than 10% of the original setting.
The Suction Flowmeter of the 3930 uses the facility’s medical-surgical vacuum source for Waste
Anesthetic Gas Disposal (WAGD). As such, flammable anesthetics or other flammable vapors are
required to be diluted below the lower flammable limit prior to disposal into the medical-surgical vacuum
system per NFPA 99-2012 (5.1.3.8)
3930.003 Rev C P/N 34031 4 of 9
Released July 2014 User Manual VAVD Controller
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