URINARY CATHETER, FOLEY 2 way, balloon, sterile, s.u., CH12
Valid Article
URINARY CATHETER, FOLEY
Definition
Foley urinary catheters are sterile, flexible tubes with an inflatable balloon at the distal tip intended to be inserted through the urethra and retained in the urinary bladder to function as an indwelling therapeutic device: they drain the bladder but block the urethra.
They have double lumens, or separate channels, running down it lengthwise = two-way catheters.
They are used in case of urinary incontinence (e.g., following a urological surgery procedure), or to void for non-ambulatory patients.
Synonym
Foley catheter, urethral catheter with balloon
Specifications
Quality standards
Technical specifications
- Silicone coated latex
- The colour of the connecting piece or the filling opening of the balloon in Foley-type catheters represents a colour-code and designates the external diameter of the catheter.
| size | ext diam mm | colour |
| CH6 | 2.0 mm | light green |
| CH8 | 2.7 mm | blue |
| CH10 | 3.3 mm | black |
| CH12 | 4.0 mm | white |
| CH14 | 4.7 mm | green |
| CH16 | 5.3 mm | orange |
| CH18 | 6.0 mm | red |
| CH20 | 6.7 mm | yellow |
- Two-way catheter:
- central channel for urinary drainage:
- straight distal end with side eyes
- proximal end with funnel shape connector
- side channel for balloon inflation ending in a non-return valve with Luer connection
- Balloon capacity: the amount of sterile water to be inserted into the balloon is usually printed on the side of the nozzle end.
- 3 - 5 ml paediatric balloon
- 5 - 10 ml balloon for routine drainage in adults
- CH 6, CH 8, CH 10 size has a guide to facilitate catheterization
- Length: 30 to 45 cm
- Sterile, for single use
Packaging & Labelling
Double sterile packaging per unit in peel-open pack
Supplied with the Article
The Foley Catheters CH6, CH8, and CH10 are supplied with an introduction stylet
From a practical and clinical standpoint, the inclusion of a stylet is both logical and beneficial:
- It facilitates a smoother and more controlled insertion, particularly in pediatric patients where urethral anatomy can make placement more challenging.
- It helps prevent kinking or bending of the catheter during insertion, ensuring that the catheter reaches the bladder correctly before balloon inflation.
- The IFU highlights that the stylet must always be removed before inflating the balloon, and that it should be withdrawn smoothly once correct placement is confirmed, thereby maintaining patient safety and minimizing the risk of urethral trauma.
Instructions for use
Please consult the “Manual of nursing Care Procedures, MSF, 2020” available online via the Nursing care working Group sharepoint page.
Precautions for Use
- Do not use in case of allergy to latex: use the silicone ones
- If clamping is required, clamp only the drainage channel. Clamping the whole catheter could obliterate the balloon channel causing difficulties with deflating the balloon.
- The balloon should be inflated with sterile water, never with air. Physiological saline (NaCl 0.9%) is not recommended as it may degrade the balloon.
- Do not inflate the balloon over the indicated maximum capacity.
- Never inflate the balloon without visualisation of urine drainage and advancing the catheter as this can cause urethral damage and pain.
- Consider a skin protection device and the type of tape to use for patients with a high-risk of developing a pressure ulcer or being injured by tape