ZK 566 EN Resectoscopy

29 RUDOLF Medical ZK 566 EN_Rev. 05.2022 Resectoscopy Bipolar Accessories Bipolar Accessories Side notes Charrière After Joseph-Frédéric-Benoît Charrière (1803 - 1876) His name became the unit of measurement Charrière for the outer circumference and thus indirectly for the diameter of urological instruments, endoscopes and catheters for various purposes. However, since his name was unpronoun- ceable for many people in the English-speaking world, an alternative name was quickly found, namely „French“ for French. This „alternative name“ is used today as a unit of measurement for catheters and medical insertion devices. Abbreviation: Charr., Ch Synonym: french gauge, Fg, Fr, F Conversion 1 Charrière = 1/3 mm. The measurement in Charrière divided by 3 corresponds approximately to the outer diameter in millimetres. For an exact calculation, you have to divide the Charrière value by π (Pi). The simple calculation by dividing by three results in a positive deviation of about 5 %. Ordering no. Description 90-0221 HF bipolar connecting cable for RUDOLF resectoscopes, SDS plug, max. 0.8 kVp, 4.5 m 8mm 8mm 2.5mm 2.5mm Ordering no. Description HF310-183 HF bipolar connecting cable for RUDOLF resectoscopes, 2-Pin flat plug, max. 0.8 kVp, 4.5 m 8mm 8mm 2.5mm 2.5mm Wikipedia