Table 2.
The volt-ampere characteristics of the impulses generated by the URIS® and UROstim2® generators when the human volunteer was included in the circuit as a load.
| Device | UROstim2® | UROstim2® | URIS® | URIS® |
|---|---|---|---|---|
| Electrodes | URIS® | URIS® | URIS® | URIS® |
| Impulse width (ms) | 0.2 | 0.4 | 0.2 | 2.0 |
| Voltage (V) | 30.3 | 42.0 | 18.9 | 15.0 |
| Current (mA) | 10.0 | 9.6 | 11.9 | 4.3 |
| Energy (mJ) | 0.066 | 0.161 | 0.044 | 0.130 |
| Charge (µC) | 2.0 | 3.8 | 2.4 | 8.6 |
The voltage and current are presented as RMS values. The data demonstrate that extending the impulse width using the UROstim2® device led to a significant increase in voltage, while extending the impulse width using the URIS® device led to a reduction of the voltage and current required for effective nerve stimulation. This results in a significant reduction in exposure to the patient.