💢➖Urology Instrumentation: (منظار المسالك البولية ) ♻️➖cystoscope sheath الشيث A Comprehensive Guide All cystoscopes are made of stainless steel alloy. ♻️➖The cystoscope sheath is calibrated in French (Fr), this is considered to be the outer circumference of the instrument in millimeters (mm). Fr is same as Charriere (Ch). @operationtechinical ➖This method of calibration was described by Joseph Frederic Benoit Charriere. Fr takes into consideration the diameter of the instrument. One mm is equal to three French. It is also written as F, Fr or Ch. the cystoscope sheath The cystoscope sheath will be discussed under the following headings:👇👇 1-Ocular funnel 2. Ocular window 3. Light pillar 4. Number denoting the sheath size 1 5. Irrigation inlet and outlet 6. Number denoting the size of ureteric catheter that can be passed through the sheet 7. Stop cock of working channel 8. Working channel #تقنيات_العمليات_الجراحية 9. Color code disk 10. Objective window 11. Beak 12. Marking on the sheath (1 cm apart) figure 1: parts of a cystoscope 💠➖تمنياتنا لكم طيب المتابعة والأستفادة __________________________ حقوق النشر محفوظه لقناة تقنيات العمليات الجراحية ❌يمنع نسخ المنشورات ولصقها بدون اسم ورابط القناة ___________________________ 💢 تقنيات العمليات الجراحية 💢 ___________________________ للأشتراك في صفحتنا على التلجرام اصغط الرابط التالي 👇👇 @operationtechinical