Intravascular ultrasound catheter injection device

Abstract

The present disclosure provides an intravascular ultrasound catheter injection device. The ultrasound catheter injection device comprises a sheath pipe and a transmission shaft movable in the sheath pipe. The ultrasound catheter injection device is characterized by comprising a pipe body and a movable part; one end of the pipe body is connected with the sheath pipe, the other end is open, besides,the transmission shaft passes through the pipe body along a length direction of the pipe body, the pipe body is internally provided with a sealing ring having an inner diameter matching an outer diameter of the transmission shaft, and besides, the transmission shaft can move relatively to the sealing ring; and the movable part comprises a sleeve pipe for accommodating the transmission shaft, thesleeve pipe can move relatively to the pipe body, a scale is further arranged on the sleeve pipe, and wherein an injection port is arranged in the pipe body between the sealing ring and sheath pipe. The disclosed intravascular ultrasound catheter injection device can reduce injection risks during an interventional operation process.

Description

technical field [0001] The present disclosure relates to the field of intravascular ultrasonic catheters, in particular to an injection device for intravascular ultrasonic catheters. Background technique [0002] The full name of IVUS system is Intravascular Ultrasound Imaging System. Through radial or femoral artery puncture, the IVUS catheter is pushed to the vascular lesion area. During the retraction process, the stylet of the IVUS catheter will perform ultrasonic imaging of the structural information of the vessel lumen and the wall section through the micro-ultrasound transducer at the front end of the stylet. Before the IVUS catheter enters the human body, it is necessary to use a syringe to inject physiological saline into the catheter through the water hole, and to discharge the air bubbles in the IVUS catheter, so that the micro-ultrasound transducer is completely in the environment covered by the liquid, which is conducive to improving the measurement. the accur...

AI Technical Summary

Problems solved by technology

[0003] However, the existing IVUS injection device has high requirements for the ink used as a scale, because the injected saline needs to pass through the catheter with the scale printed on it, and the saline is directly connected to the internal environment of the human body

In addition, in the existing design, the movable part will generate partial pressure when moving, which increases the risk during the operation

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