Lumbosacral puncture and drainage device with controllable flow of air bag

Abstract

The invention relates to a lumbosacral puncture and drainage device with a controllable flow rate of an air bag, which comprises a trocar with an outer needle and a needle core, a three-way valve, a sample collection tube and a sample collection bag, the needle core is located inside the outer needle, and the three-way One port of the valve is connected to the sample collection tube through the diversion tube, and the sample collection tube and the sample collection bag are connected through the diversion tube. After the trocar punctures into the spinal cavity, it exits the needle core, and the trocar is inserted into the soft tube with the guide wire inside. Catheter, the thickness of the guide wire matches the inner diameter of the soft catheter. After the guide wire enters the spinal cord cavity, it exits the outer needle. After the guide wire guides the soft catheter into the spinal cord cavity, it exits the guide wire. Connection, the end of the soft catheter inserted into the spinal cavity is provided with an inflatable air bag, and a flow control valve is provided between the three-way valve and the sample collection tube. The soft catheter of the lumbosacral puncture and drainage device is easier to insert into the spinal cavity without breaking and slipping off, and can accurately control the flow of spinal fluid.

Description

technical field [0001] The invention relates to a puncture and drainage device, in particular to a lumbosacral puncture and drainage device with an air bag and controllable flow. Background technique [0002] The lumbosacral puncture and drainage device is a device that can extract spinal fluid. The common lumbosacral puncture and drainage device in the prior art usually includes a trocar, a sample collection tube and a sample collection bag, wherein the connection between the trocar and the sample collection tube is The room is connected through a three-way valve, and the sample collection bag is connected to the downstream of the sample collection pipe. Commonly used trocars are composed of a trocar and a needle core. During use, the trocar is inserted into the space of the spinal cord cavity, withdraws from the needle core, enters the catheter, and exits the trocar. The end of the catheter remains in the spinal cavity to play a role in drainage. However, in actual use, d...

AI Technical Summary

Problems solved by technology

However, in actual use, due to the patient's own movement and other reasons, the catheter may slip out of the patient's spinal cord cavity; in addition, during the puncture process, the catheter is not easy to insert into the human spinal cord cavity, and it is easy to adjust the catheter after the puncture. The catheter is cut off by the sharp puncture needle, causing the catheter to break and stay in the patient's spinal cavity; in addition, the commonly used lumbosacral puncture and drainage device does not have the function of regulating the flow

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