1. Tubing unsealing conditions

(1) Observe the smoothness of the hard mirror in the ureter. If the hard lens is relatively sturdy and the resistance is large, for the soft mirror, the ureteral sheath can be observed. For the soft and hard mirror, the medical staff may be informed. Putting in the soft mirror will be awkward.

(2) Observe the ureter condition of the internal view of the display screen. If the ureter has more or heavier distortion, overlap, and stenosis, inform the use of the risk and then unpack the catheter according to the actual situation;

(3) Observe whether there is backwater and exposed part length at the end of the inserted ureteral dilatation sheath. If the exposed part is ≥15cm, inform the use of the risk and unpack the catheter according to the actual situation.

2. Reasons for the limitation of backwater and solutions

(1) The upper ureter or UPJ is narrow and tortuous, which can be alleviated by placing a safety guidewire between the ureteral dilatation sheath and the catheter.

(2) The ureteral dilatation sheath is not placed in place, the position of the dilatation sheath is adjusted or the ureter dilatation sheath is restored.

(2) The surgeon operated improperly, the ureteral dilatation sheath external opening was vertical upward, changing the operating habits, and fixing the ureter dilatation sheath downward or parallel.

3. Bubbles appear in the field of view and solutions

(1) Mix air in the process of pumping water or hand water; pump water should be drained first, and water should be added in time during pumping to avoid air bubbles due to water cut; water should be even and slow, avoiding air when replacing syringes.

(2) The air in the soft-mesh catheter instrument channel is not exhausted and enters the patient's body; the soft mirror should be drained before entering the human body.

(3) If bubbles have been generated, it can be treated by flushing, gently shaking the mirror body, syringe to pump liquid from the inlet hole of the catheter, facing the bubble, and lightly rubbing the laser.

4. The field of view has a fixed foreign body

(1) Due to flushing, crushing stones, etc. during the operation, foreign matter may stick to the front end of the lens; it may be removed by gently shaking the mirror body, flushing water, and withdrawing the liquid from the catheter inlet hole; or removing the soft Mirror, wipe the lens. If it cannot be solved at all times, it means that the foreign matter enters the catheter and only the catheter can be replaced.

(2) Before the operation, check the objective end of the fiberscope, the end of the eyepiece, and the camera of the main unit. If there is any foreign matter, wipe it off. If there are no problems in the three places, foreign matter may exist in the catheter. It is recommended to replace the catheter.

5. Halo or crescent in the field of view

(1) The end of the fiberscope objective lens is not at the foremost end of the catheter; most of it is because the crystal head of the displacement compensator is not tightened, the fiberscope is retracted, or the soft-mirror catheter is passively extended after bending for a long time. Simply tighten the crystal head and adjust the compensator slightly.

6. 钬 laser fiber can not be worn out

(1) The front end of the catheter is in an active or passive bending state. It is recommended that the doctor return to the catheter before wearing the krypton laser.

(2) The holmium laser fiber piercing duct is pierced from the side, and the holmium laser fiber is not visible in the field of view; the duct needs to be replaced.

(3) If the catheter is returned straight and cannot be worn outside the body, the catheter should be replaced for the quality of the catheter.

7. The stone can't be seen.

(1) When the IPA angle is<30°, the bending angle of the soft mirror is not enough, and the squat stone is difficult to handle;

(2) The neck is too deep, too narrow, the soft mirror cannot enter or the flexible mirror can not be long enough to reach the stone;

(3) ureteral tortuosity, stenosis, ureteral dilatation sheath is not fully in place, affecting the operability of the soft mirror.

8. Postoperative product Q & A

(1) Advantages of the company's products

1 catheter can be used once to avoid cross infection;

2 fiber system and renal mirror catheter separation, reduce equipment vulnerability, reduce the cost of use, and good durability;

3 The lens body is slender, the back water is smooth, and the operation is safer;

4 unique stepless self-locking function, the lesion positioning is more accurate and reduces the operator's fatigue;

5 instrument channel has 4.2F, can be compatible with larger diameter gravel stone removal equipment;

6 adaptability, fiber optic endoscope is basically suitable for all mainframes, and can be adapted to all products of the company, not only can complete ureteroscopy, but also complete percutaneous nephrolithotomy;

7 The lens body is light and reduces the labor intensity of the operator.

(2) Causes of fiberscope damage

1钬When the laser fiber is working too close to the mirror body or accidentally stepping on the soft body;

2 wear and tear during storage, cleaning, disinfection, packaging and transportation;

3 fiber lens end ≤ 3cm turn;

4 fiber optic endoscope is folded into an acute angle at any part;

5 ureteral soft mirror did not return straight and forced to withdraw from the expansion sheath;

6 ureteroscopy without direct operation using a ureteral dilatation sheath;

7 Use brute force to passively bend the fiber optic lens end.

(3) Disposable use of the catheter

1 Our catheter is designed to be used once and is strictly prohibited to avoid cross infection.

2 There are repeated use cases in individual hospitals. We cannot control the secondary use of the hospital, but the second use will greatly increase the risk of infection, and our company is not responsible for this; secondary use may also damage the fiberscope.