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Intravascular pressure measuring catheter with developing ring

A technology for measuring catheters and developing rings, applied in catheters, cardiac catheters, pressure sensors, etc., can solve problems affecting accuracy or precision, and achieve the effect of improving measurement accuracy or precision

Inactive Publication Date: 2019-01-04
SHENZHEN INSIGHT MED CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For existing pressure-sensing catheters, in order to facilitate the location of the catheter, a developing material is usually provided on the distal or proximal part of the catheter. Therefore, it is difficult for the doctor to accurately locate the position of the pressure sensor according to the position of the imaging material during the operation, and there is a certain deviation between the recorded blood pressure at the distal end of the stenosis and the blood pressure at the proximal end of the stenosis, which affects the measured FFR Accuracy or precision of the value

Method used

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  • Intravascular pressure measuring catheter with developing ring
  • Intravascular pressure measuring catheter with developing ring
  • Intravascular pressure measuring catheter with developing ring

Examples

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Effect test

no. 1 Embodiment approach

[0032] figure 1 A schematic perspective view showing the three-dimensional structure of the catheter for measuring intravascular pressure with a developing ring according to the first embodiment of the present invention. figure 2 show figure 1 Schematic diagram of the three-dimensional structure of the intravascular pressure measuring catheter with a developing ring at another angle as shown. image 3 It is a schematic diagram showing the heart part where the intravascular pressure measuring catheter according to the embodiment of the first invention of the present invention is inserted into the human body. exist figure 1 and figure 2 In the illustration, the proximal part 20 of the intravascular pressure measuring catheter 1 with a developing ring only shows a part close to the distal cannula 10 for illustration.

[0033] Such as figure 1 and figure 2As shown, the intravascular pressure measurement catheter with a developing ring (hereinafter, sometimes referred ...

no. 2 Embodiment approach

[0093] Figure 8 A schematic three-dimensional structure diagram of an intravascular pressure measuring catheter with a developing ring according to a second embodiment of the present invention is shown.

[0094] Such as Figure 8 As shown, the difference between the present embodiment and the first embodiment is that the position of the developing ring 30 is provided on the proximal portion 20. Thus, the position of the pressure sensor 40 can be determined by locating the position of the developing ring 30 . In this case, the doctor can determine the position of the pressure sensor 40 through the position of the developing ring 30 determined by methods such as X-ray irradiation during the surgical operation, so that the pressure sensing part can be more accurately located To improve the measurement accuracy or precision of the intravascular pressure measurement catheter, the effects described in the first embodiment can also be achieved.

[0095] In this embodiment, the Yo...

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Abstract

The invention provides an intravascular pressure measuring catheter with a developing ring, comprising a distal cannula having a guide wire cavity slidably receiving a separate medical guide wire; a developing ring disposed at a front end of the distal cannula, the developing ring having a step portion; a pressure sensor disposed on the step portion of the developing ring for measuring blood pressure in a blood vessel and generating a blood pressure signal; and a proximal portion coupled to the distal cannula and including a signal path for transmitting the blood pressure signal from the pressure sensor and a connecting catheter for supporting the signal path and moving the distal cannula. In the present invention, the position of the pressure sensor can be accurately positioned. In addition, the adverse effect of the distal cannula or the proximal portion on the pressure sensor measurement when the distal cannula or the proximal portion moves in the blood vessel can be suppressed, andthe measurement accuracy or precision of the intravascular pressure measuring catheter can be improved.

Description

[0001] This application is filed on October 21, 2017 , the application number is 201710987577.X , the name of the invention is with display Shadow Ring's Intravascular Pressure Measurement Catheter divisional application of the patent application. technical field [0002] The invention relates to an intravascular pressure measuring catheter with a developing ring. Background technique [0003] For many cardiovascular diseases such as coronary heart disease, percutaneous coronary intervention (PCI) is currently a relatively effective treatment. In recent years, in order to more accurately judge whether a patient really needs interventional therapy, the use of Fractional Flow Reverse (FFR for short), which evaluates the extent to which stenotic lesions block blood flow through blood vessels, has been increasingly used and promoted. FFR is defined as the ratio of the maximum blood flow in the stenotic artery to the normal maximum blood flow. In order to calculate the FFR...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0215A61B5/00
CPCA61B5/02141A61B5/0215A61B5/6852A61B2562/0247A61M2025/0002A61M2025/0008
Inventor 宋亮陈丽丽王宇翔胡文城
Owner SHENZHEN INSIGHT MED CO LTD