Blow probe with Tiemann tip for single use. Tip adapted to the anatomy of the man. To be used with lubricant to protect the urinary tract. The Tiemann catheter is a probe with a slightly curved tip that can facilitate catheterisation in patients with prostatic hypertrophy or a steep bladder neck. Closed tip, with two lateral eyes, colour coded funnel, 40 cm, PVC, sterile. This catheter is available in various charities. What is a career? Charrier (CH) is an international size that indicates the diameter of the catheter. One Charrier is 1/3 mm. Female catheters are usually prescribed in 12 or 14 CH. Male catheters are usually prescribed in 14 or 16 CH. The doctor or specialist nurse will determine which thickness catheter is most suitable for you.