Injection device for intravascular ultrasound catheter

Abstract

The present disclosure provides an injection device for an intravascular ultrasonic catheter, which is an injection device for an ultrasonic catheter with a sheath tube and a transmission shaft movable in the sheath tube, and is characterized in that it includes: a tube body, one end of which is connected to the sheath tube, The other end is open, and the transmission shaft runs through the pipe body along the length direction of the pipe body. In the pipe body, a sealing ring with an inner diameter matching the outer diameter of the transmission shaft is provided, and the transmission shaft can move relative to the sealing ring; and the moving part, It has a casing for accommodating the transmission shaft, the casing can move relative to the tube body, and a scale is also set on the casing, wherein, the tube body between the sealing ring and the sheath tube is provided with an injection port. According to the present disclosure, the risk of injection during an interventional procedure can be reduced.

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

Images