Disposable endoscopic catheters are sterile, single-use medical catheters specifically designed to assist in the manipulation of endoscopic devices such as ureteroscopes and cystoscopes within the urinary system. Their design aims to provide a stable operating channel for the endoscope while protecting the urinary tract mucosa, reducing mechanical damage, and lowering the risk of infection. Compared to reusable catheters, disposable catheters have become an indispensable core tool in urological surgery due to their high safety and convenience.

I. The Role and Significance of Disposable Catheters 1. Protecting the Urinary Tract Mucosa

Repeated insertion and manipulation of the endoscope can cause frictional damage to the urinary tract wall, leading to tissue inflammation or bleeding. Disposable catheters significantly reduce the risk of mechanical damage to the urinary tract by providing a smooth operating channel for the endoscope.

2. Reducing the Risk of Infection
In patients with urinary tract infections or immunocompromised patients, controlling the risk of infection is paramount in urological surgery.

Disposable catheters, due to their single-use nature, avoid the possibility of cross-infection, which is especially important when dealing with complex infectious diseases. 3. Improved Surgical Efficiency The pre-sterilization and ready-to-use nature of disposable catheters reduces preoperative preparation time and provides a smoother operating path, making the surgical process more efficient and successful. 4. Applicable to Complex Anatomical Structures In handling complex cases such as ureteral stricture and urethral stricture, disposable catheters can help endoscopic equipment pass through the narrowed area more easily, ensuring equipment stability and increasing the success rate of the surgery.

II. Clinical Applications of Disposable Catheters 1. Ureteroscopy and Treatment During ureteroscopic examinations and treatments (such as lithotripsy, polyp removal, or biopsy), disposable catheters are used to protect the ureteral wall and avoid direct contact with the endoscope, preventing tissue damage.

2. Cystoscopy
Disposable catheters provide a sterile and stable channel in cystoscopic procedures (such as bladder tumor resection and stone removal), ensuring smooth operation of surgical instruments.

3. Extracorporeal Shock Wave Lithotripsy (ESWL) Assistance
In some cases requiring lithotripsy assistance, the catheter can serve as an operating channel, ensuring that the ureter and bladder are not interfered with or damaged by the lithotripsy equipment.

4. Complex Urinary Tract Diseases
For cases involving ureteral dilation and surgical stent placement, disposable catheters provide precise and safe assistance.

III. Design Features of Disposable Endoscopic Catheters

1. Material Selection o Commonly used materials include PTFE (polytetrafluoroethylene) and PEBAX. These materials have advantages such as strong biocompatibility, smooth surface, and low friction, which can reduce tissue damage during surgical procedures.

2. Balance of Flexibility and Rigidity: The insertion tube needs sufficient flexibility to adapt to the anatomical curves of the urinary tract, while also requiring a certain degree of rigidity to prevent folding or collapse during operation. 3. Lubricating Coating: The surface of the insertion tube is usually covered with a hydrophilic coating, which becomes smoother upon contact with body fluids, further reducing friction between the tube and tissues. 4. Radiopaque Function: Many disposable insertion tubes have radiopaque markers, providing real-time and accurate feedback in surgeries requiring X-ray-assisted positioning. 5. Diverse Specifications: Insertion tubes are available in various diameters and lengths to suit the anatomical characteristics of different patients and the needs of different types of surgery. IV. Surgical Procedures for Disposable Insertion Tubes 1. Preoperative Preparation: The physician selects the appropriate insertion tube size and prepares instruments in advance according to the patient's condition and the type of surgery. Thorough communication with the patient is conducted preoperatively to ensure a sterile surgical environment. 2. Insertion of the catheter: With the aid of lubricant, slowly insert the catheter along the urethra to the target site (such as the ureter or bladder inlet). Ensure the catheter is securely placed before proceeding with subsequent procedures. 3. Endoscopic procedure: The physician inserts the ureteroscope or cystoscope into the urinary tract through the catheter to complete the examination, treatment, or sampling procedure. 4. Postoperative removal: After the procedure, the physician removes the endoscope and catheter together, ensuring no residual tissue or equipment remains. Disposable endoscopic catheters are important tools in the field of urology, and their design and application have solved many problems in complex surgeries. Due to their high safety and ease of operation, disposable catheters are widely used in urological surgeries such as ureteroscopy and cystoscopy. With continuous advancements in materials science and technology, this medical device will be further optimized, bringing higher quality medical services to patients.

In the future, we will continue to focus on technological innovation and manufacturing process optimization to provide customers with customized, high-performance catheter solutions.