Flexible ureteroscope sheath and continuous circulation type perfusion and suction system

Abstract

The invention discloses a flexible ureteroscope sheath and a continuous circulation type perfusion and suction system. The flexible ureteroscope sheath comprises a flexible catheter sheath and a ureter, the ureter is sleeved with the catheter sheath, a circle of infusion tube adheres to the periphery of the catheter sheath, and a circle of annular capillary tube adheres to the tail end of the catheter sheath along the circumference; the annular capillary tube is adhered to the tail end of the infusion tube and communicated through a needle hole; the periphery of the ureter is sleeved with a slidable sliding sleeve, an annular rotary knob is arranged at the tail end of the sliding sleeve, the outer surface of the sliding sleeve is provided with crescent protrusions extending in the circumferential direction of the sliding sleeve, the ureter penetrates through the two ends of the catheter sheath, the head ends of the ureter and the catheter sheath are connected, and the remaining sections of the ureter and the catheter sheath are in clearance fit. The protrusions on the surface of the sliding sleeve can be inserted between the two and pulled out, and the sliding sleeve can rotate between the two. The continuous circulation type perfusion and suction system comprises a flushing loop formed by connecting a perfusion pump in series between a sterile sealed liquid tank and the ureter, and a water return loop formed by connecting a precipitation container and a suction and discharge pump in series between the catheter sheath and the sterile sealed liquid tank.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a flexible ureteroscope sheath and a continuous circulation perfusion and suction system. Background technique [0002] At present, kidney stone is a common disease in urology, with a high incidence rate, which can be secondary to: hematuria, low back pain, urinary tract obstruction and even urinary tract tumors, which seriously endanger people's health. The usual treatment is lithotripsy under flexible ureteroscopy. Due to its powerful minimally invasive or even non-invasive technology, lithotripsy under flexible ureteroscope has quickly been recognized by everyone in the treatment of kidney stones and has been widely used. [0003] With the wide application of flexible ureteroscopy. At present, it is found that there are the following problems: 1. The soft mirror itself is not equipped with a negative pressure suction device, and it only relies on the gyra...

AI Technical Summary

Problems solved by technology

At present, it is found that there are the following problems: 1. The soft mirror itself is not equipped with a negative pressure suction device, and it only relies on the gyration and outflow of water to bring out the stones, making it difficult to remove large stones; 2. The bending of the hose depends on silk thread traction Device and serpentine joint, it is difficult to observe the bending direction during operation, which is not conducive to suction and discharge of crushed stones

3. The mirror needs to be withdrawn when clearing the stone, because the water inlet channel is connected to the flexible ureteroscope, which makes it impossible to continue perfusion when withdrawing the mirror, resulting in emptiness in the renal pelvis, which is not conducive to clearing the stone

4. The water inlet device is connected to the flexible ureteroscope, which causes stones to drift easily during the lithotripsy process of the flexible ureteroscope

5. During the operation, the pressure in the renal pelvis may be too high due to too fast perfusion, causing corresponding complications, and the heat of the body is taken away during the water circulation process, causing hypothermia

6. The structure of the existing sedimentation container is relatively simple. When filtering, because the stone powder is too small, the formed suspension takes a long time in conventional sedimentation, is not easy to filter, and is prone to blockage of stone fragments and blood clots Filtration structure, resulting in low filtration efficiency, affecting the normal circulation of the circuit

[0004] These disadvantages lead to: 1. The stones are pulverized after kidney stone surgery, but the stones are not discharged, and the patient still needs to combine diet, exercise and medicine to assist stone removal, which increases the treatment cycle and treatment costs.

Even in some cases, the patient’s stone removal is not ideal, forming a stone street, which greatly reduces the effect of the operation; 2. Due to the drift of the stone, unnecessary waste of operation time is caused

3. The existing sedimentation container is inconvenient for the medical staff to take out and collect the stone fragments after the operation is completed

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