Table 1.

Summary of technical and experimental results (mean + −stddev) of the single use and reusable ureteroscopes.

		PU3022A Single-use	Video FURS Reusable	Fiberoptic FURS Reusable
Technical data
Platform		Digital	Digital	Fiberoptic
Reusable		No	Yes	Yes
Shaft diameter		9.5 F	8.4 F	7.5 F
Working channel		3.6 F	3.6 F	3.6 F
Optical characteristics
Resolution [lines/mm]
10 mm		6.72 ± 0.99	5.66	2.00
5 mm		12.02 ± 0.90	8.98	4.00
3 mm		16.39 ± 0.78	16.00	5.66
Distortion [%]
air	10 mm	−24.3 ± 0.3	−27.6 ± 0.2	−35.7 ± 0.4
	5 mm	−23.2 ± 0.6	−28.4 ± 0.1	−34.5 ± 0.4
water	10 mm	−8.6 ± 0.2	−15.2 ± 0.2	−20.2 ± 0.9
	5 mm	−8.9 ± 0.6	−15.4 ± 0.2	−20.8 ± 0.6
Deflection [°]
empty		316 ± 4	256	248
275 µm fibre		298 ± 10	242	223
wire basket		316 ± 6	245	245
Flow rate [ml/min]
1 m	empty	58.1 ± 2.7	40.5 ± 0.3	36.5 ± 1.1
	275 µm fibre	30.4 ± 1.5	20.3 ± 0.6	19.9 ± 0.5
	wire basket	24.7 ± 1.3	16.5 ± 0.8	14.9 ± 0.9
2 m	empty	91.9 ± 7.4	72.4 ± 1.6	67.9 ± 0.7
	275 µm fibre	50.4 ± 2.4	36.2 ± 0.6	34.9 ± 0.5
	wire basket	41.3 ± 1.5	28.2 ± 0.3	30.5 ± 0.7