You do not meet all the criteria to be eligible for IDET (such as the criteria listed in the column to the left). 1  You have severe disc degeneration. 2  You have spinal stenosis. 3  You have a spondylolisthesis. 4  You have had back surgery or IDET before.
the most common lenght is 190 cm   several width size   90 cm for one person   140 or 160 are the most common for two persons   but there are also 190 cm or â¦ 200 cm. 2 people found this useful. Answered. In Bed and Breakfasts Boutique Hotels.
The French size is a measure of the external diameter of a catheter (not internal drainage channel). So, for example, if a two-way catheter of 20 Fr is compared to a 20 Fr three-way catheter, they both have the same external diameter but the two-way catheter will have a larger drainage channel than the three-way.Three-way catheters accommodate an extra channel for irrigation within a similar external diameter. round catheter of 1 French has an external diameter of 1â3 mm, and therefore the diameter of a round catheter in millimetres can be determined by dividing the French size by 3: D (mm) = Fr / 3. or. Fr = D (mm) * 3. For example, if the French size is 9, the diameter is 3 mm.