Percutaneous double catheterization cannula used for kidney puncturing

Abstract

The aim is to avoid that under guiding of B-mode ultrasounds, after percutaneous kidney puncture catheterization, repeated puncturing catheterization caused by blocking of a drainage tube causes injuries, and decreases the occurrence rate of kidney bleeding after catheterization. The invention provides a percutaneous double catheterization cannula used for kidney puncturing catheterization. The cannula is mainly composed of a double catheterization cannula outer tube and a double catheterization cannula inner tube, and a renal cortex airbag is arranged at the front segment of the double catheterization cannula outer tube and is charged with air to press the renal cortex for stopping bleeding; the outer diameter of the double catheterization cannula inner tube is slightly smaller than the inner diameter of the outer tube, and the double catheterization cannula inner tube can be fixedly connected with the outer tube through a fixing device. In this way, under the condition that the innertube is blocked, the inner tube can be replaced without pulling out the outer tube, and it is avoided that repeated puncturing injures a patient.

Description

Technical field [0001] The patent of the invention relates to a double cannula used for percutaneous renal puncture catheter placement. technical background [0002] With the development of minimally invasive surgery, percutaneous renal catheter placement under ultrasound guidance has become one of the main treatment options for ureteral stones with pyelonephritis and septic shock. It can be operated at the bedside, does not require general anesthesia, and has low operational risk. The advantages of small incision and quick recovery are considered to be one of the ideal methods for infection control in patients with ureteral stones and septic shock. However, compared with percutaneous nephroscope catheterization, the puncture catheter under the guidance of B-ultrasound has a smaller diameter, and it is often used to drain the infected lesions that the drainage catheter is obstructed and needs to be re-punctured. In addition, renal cortex bleeding is also one of the common compli...

AI Technical Summary

Problems solved by technology

At present, the methods for treating bleeding after percutaneous nephroscopic surgery mainly include the following: 1. For patients with less bleeding and stable vital signs, try to clamp the drainage tube to stop the intrarenal bleeding by increasing the internal pressure of the renal collecting system. For patients with ureteral calculus with pyelonephritis and septic shock, clamping the drainage tube will lead to an increase in the pressure in the renal pelvis, and bacteria will enter the blood and aggravate the septic shock

2. Renal arteriography and high-selective arterial embolization can be performed for patients with a lot of bleeding. Nephrectomy can be performed for those who cannot stop bleeding due to arterial embolism. very high

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