Balloon filling device

Abstract

A balloon inflation device includes an injection pump (11), a sensor (12) and an electronic display device (13). An end of the injection pump (11) is connected to the balloon (10) for injecting liquid to inflate the balloon. The sensor (12) is in fluid communication with the injection pump (11) to sense the inflation pressure of the balloon (10) and generate the electrical signal of the inflation pressure to be transmitted to the electronic display device (13). The electronic display device (13) includes an analog-digital conversion portion (131) for converting the received electrical signal of the inflation pressure to the digital signals, a memory portion (132) for storing the inflation pressure during the inflation operation based on the digital signals and a display portion (133) for displaying curve of inflation pressure-time based on the inflation pressure stored in the memory portion (132). The electronic display device (13) also includes an analysis portion (134) for real time analysis of the digital signals such that the maximum inflation pressure can be gained, the real time diameter of the balloon can be calculated based on the relationship of inflation pressure-diameter of the balloon of corresponding balloon (10) and the diameter of the balloon and the maximum inflation pressure can be real time displayed on the display portion (133).

Description

technical field [0001] The invention relates to a balloon filling device, in particular to a balloon filling device used in cooperation with a balloon expansion stent. Background technique [0002] At present, balloon-expandable stents are widely used in the treatment of vascular stenosis in the cardiovascular system, usually through percutaneous arterial intervention, such as percutaneous coronary intervention, percutaneous renal artery intervention, etc. The stent on the deflated balloon is delivered to the vascular lesion site, and after positioning, a contrast agent is injected through the balloon inflator to expand the balloon, and then the stent is expanded to achieve the purpose of dilating the blood vessel. [0003] Usually, a balloon-expandable stent with a nominal diameter slightly larger than the diameter of the blood vessel at the lesion site is selected to ensure that the stent can fully expand and adhere tightly to the wall despite the retraction of the balloon...

AI Technical Summary

Problems solved by technology

This type of device has the following defects: during the percutaneous surgery, the operator needs to operate the balloon inflator to align the balloon while maintaining monitoring of the stent implanted in the blood vessel by IVUS (intravascular contrast-enhanced ultrasound) and other means. While the balloon is inflated, frequently shift the line of sight to check the meter head of the balloon filler, and adjust the follow-up operation of the balloon filler based on the real-time readings of the meter head filling and compaction

This type of device needs to be viewed at both ends, which is inconvenient and largely depends on the experience of the operator, and the subsequent accurate operation of the balloon inflator cannot be realized only by real-time readings and experience of filling and pressing. For example, the performance of the balloon near the nominal diameter Low compliance, with only a small change in outer diameter over a wide range of inflation pressure increases, the balloon inflation pressure may be too high before a significant change in the expanded diameter of the stent is observed on the screen

[0005] Some researchers have also tried to use electronic devices to display various parameters of the filling process through various means, but the designed products are bulky, not comprehensive enough, and lack a friendly man-machine interface. described in US Patent or US Patent Grant No. US5171299A

Although this type of device eliminates the trouble for the operator to read the meter reading, it still has the following defects: it can only directly display the parameters of the filling process, such as pressure, etc., and cannot further process these parameters such as continuous recording, curve display and printing, etc. , the operator still needs to judge the corresponding balloon diameter based on experience based on the filling pressure, which cannot provide the operator with an intuitive reference for operating the balloon inflator; cannot monitor the peak value of the filling pressure, and cannot issue an alarm for excessively high filling pressure. Ensure that the operation is correct; it cannot be applied to the modern hospital information system to establish a database for different types of balloon-expandable stents, so that the operator can accurately obtain from it without high experience. Depressed balloon diameter for more accurate inflation

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