|PalJet Venturi Vacuum Technology
The PalJet EKG electrode uses a vacuum created by air pumped to it in place of conductive gels and creams and the sticky contact adhesive of disposable electrodes.
In the same way that a passing breeze draws smoke up a chimney or intake air draws fuel through an automobile carburetorthe Venturi principlethe PalJet Patient Cable-Electrode System uses a stream of air to create a vacuum in a small chamber surrounding its EKG electrode.
The vacuum draws the patient's skin into contact with the electrode and holds it there with a constant force while the EKG recording is taken. The stream of air creating the vacuum is supplied to the each electrode housing by flexible tubing connected to a small DC-powered air pump.
The EKG lead wires are built into the air pressure tubing connected to each electrode. This cable assembly plugs into the PalJet connection box that in turn is connected to the EKG recorder and the air pressure pump.
When the EKG exam is completed, the electrodes are released by turning off the air pressure pump. When air flow stops, the vacuum inside each electrode subsides and the electrodes fall off the patient within one second.
More convenient & cost-effective than existing electrodes
Conventional "Welsh Cup" EKG electrodes also use vacuum to hold the electrode to the skin. These electrode assemblies have a rubber bulb that's squeezed to create vacuum in a metal hemisphere that's pressed to the skin. In use, this vacuum gradually decreases as air leaks into the hemisphere and the grip of the electrode on the skin decreases over time. As this happens, electrical continuity with the skin can change, and sometimes electrodes detach prematurely.
The air stream-powered Venturi vacuum maintains a constant, intimate contact between the electrode and the skin that is equal in quality or better than the contact that is possible with conductive creams, gels, and the adhesives of disposable electrodes.
The constant suction maintains a seal around surface irregularities, including hair. This allows optimal skin continuity to be maintained without shaving contact patches, where this would be customary and necessary practice with conventional electrodes.
No conductivity creams or gels are used with PalJet electrodes because they are generally not needed and could clog the air jet passages. A water-based conductivity-enhancing fluid may be used optionally with PalJet electrodes, where indicated.
If an electrode needs to be repositioned, its suction can be neutralized temporarily by holding a finger over its air exit port. This causes the air stream to spill into the suction chamber, lifting the electrode off the skin.
Eliminating time spent shaving, re-attaching slipped electrodes, and assisting patients with clean-up after measurement significantly reduces the time needed to examine each patient.
These time savings, along with the elimination of expendable supplies used for connecting patients and reduction of lead wire replacement costs, contribute to notable savings for EKG operations. One hospital reports savings greater than $6000 (US) in the first year of PalJet use.
Patients report favorable impressions of the quicker, less messy and less intrusive procedure the PalJet system allows.