Clinical Study on Disposable Sterile Urinary Catheter

Exclusion Criteria

• •Pregnant and lactating female patients;
• •Diabetes patients;
• •Patients allergic to sulfadiazine, silica gel and stainless steel;
• •Urethral malformation, acute urethral injury, prostate disease, intermittent catheterization, suprapubic cystostomy and other patients who are not suitable for catheterization;
• •Patients who have used urinary catheters for a long time or had catheters retained within one week;
• •Patients who are participating in other clinical trials that interfere with this trial.