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Balloon catheter, delivery system and stent system

A balloon catheter and delivery system technology, applied in the field of medical devices, can solve the problems of easy thrombosis, non-adjustment, and vascular structure adjustment.

Pending Publication Date: 2021-08-31
SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Clinically, some doctors also use the method of implanting two stents of different specifications to solve this kind of problem, but the overlap between the two stents is prone to complications such as thrombosis, and it will also increase the cost and complexity of the operation
[0004] There is also a tapered balloon in the prior art, but the balloon is one-piece and made of the same material. Its overall outer diameter and taper angle are preset and cannot be adjusted, and cannot be adjusted according to the blood vessel structure. Different catheters are replaced with different vessel configurations, and the expansion of the stent is insufficient, so it is also necessary to use a high-pressure balloon to post-expand the stent
In particular, the lesions in blood vessels are complex, with different proximal and distal sizes of blood vessels, different taper angles, bifurcation lesions, and long lesions. At present, there is no case of tapered stents used in blood vessels, especially graded adjustable taper bracket system

Method used

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  • Balloon catheter, delivery system and stent system
  • Balloon catheter, delivery system and stent system
  • Balloon catheter, delivery system and stent system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] figure 1 Schematic diagram of the structure of the stent system provided for the preferred embodiment of the present invention, figure 2 yes figure 1 A partial schematic view of the distal end of the stent system shown. Such as Figure 1~2 As shown, the present embodiment provides a stent system 100, including a balloon catheter 110 and a stent 120, the balloon catheter 110 includes a catheter body 111 and a balloon 112; the balloon 112 is arranged at the distal end of the catheter body 111, and is used for loading The stent 120 ; the stent 120 is used to be pressed and held on the balloon 112 , and then the expansion of the stent 120 is realized by filling and expanding the balloon 112 . The expanded balloon 112 can be a straight balloon (ie, the expanded shape is cylindrical), or a conical balloon (ie, the expanded shape is truncated conical or nearly conical). Straight balloons can match blood vessels with uniform inner diameter; tapered balloons can better matc...

Embodiment 2

[0053] image 3 Schematic diagram of the structure of the stent system provided by the second preferred embodiment of the present invention, Figure 4 yes image 3 A partial schematic view of the distal end of the stent system shown. The structure of the stent system provided in this embodiment is basically the same as that of the stent system in Embodiment 1, and only the differences will be described below.

[0054] Such as Figure 3-4As shown, this embodiment provides a balloon catheter 110', including a catheter body 111 and a balloon 112', wherein the expanded balloon 112' is also a tapered balloon. The difference from the balloon 112 in Embodiment 1 is that the expanded balloon 112' includes two conical sections connected in succession in the axial direction, namely the first conical section 1131 and the second conical section 1132. The diameters of each tapered segment gradually increase from the distal end to the proximal end. The diameter of the wide end of the f...

Embodiment 3

[0060] Figure 5 It is an enlarged view of the distal end of the balloon catheter provided by the third preferred embodiment of the present invention. The structure of the balloon catheter 110 ″ provided in this embodiment is basically the same as that of the balloon catheter 110 in Embodiment 1, and only the differences will be described below.

[0061] Such as Figure 5 As shown, the balloon catheter 110" of this embodiment includes a catheter body 111 and a balloon 112" located at the distal end of the catheter body 111. The balloon 112" includes an inner balloon 112a and an outer balloon 112b. An inner balloon 112a is nested, and the outer balloon 112b and the inner balloon 112a are inflated and expanded respectively to form different stent configurations, thereby adapting to different vascular structures. Wherein, the inner balloon 112a can adopt the ball in the first embodiment The balloon 112 or the balloon 112' in the second embodiment are not further described here....

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Abstract

The invention relates to a balloon catheter, a delivery system and a stent system. The stent system comprises a stent and the delivery system, wherein the delivery system comprises the balloon catheter, the balloon catheter comprises a catheter body and a balloon, the balloon is arranged at the far end of the catheter body, and the stent is pressed and held on the balloon. The balloon comprises one or more first balloons, and the first balloons have different compliance in the axial direction, so that the taper of the expanded first balloons can be changed along with the change of the pressure of a filling medium.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a balloon catheter, a delivery system and a stent system. Background technique [0002] With the continuous development and improvement of my country's economy and medical level, the average life expectancy of the people and the aggravation of aging, bad living habits lead to an increase in the number of patients with coronary heart disease year by year, and the rate of patients seeking medical treatment and surgery is also increasing year by year. Percutaneous coronary intervention (PCI) has become the most important interventional therapy for coronary artery disease due to its advantages of high efficiency, minimal trauma, low medical expenses, low risk, and length of hospital stay. In recent years, the number of PCI operations in my country has also maintained a growth rate of more than 10%, and since 2014 there has been a trend of increasing growth rate. According to...

Claims

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Application Information

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IPC IPC(8): A61F2/958A61M29/04A61F2/82
CPCA61F2/82A61F2/958A61F2210/0061A61F2250/0098A61M29/02
Inventor 季晓飞姚映忠岳斌
Owner SHANGHAI MICROPORT MEDICAL (GROUP) CO LTD
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