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Balloon catheter provided with a balloon with two asymmetric ends

A balloon catheter, asymmetric technology, applied in balloon catheters, catheters, hollow probes, etc., can solve the problems of insufficient expansion, affecting the life of patients, rupture of blood vessel walls, etc., saving balloons, avoiding Distal vascular injury, good safety effect

Pending Publication Date: 2018-02-06
孙英贤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Whether ordinary balloons are used to expand blood vessels or to implant stents, when the diameter difference between the two ends of the blood vessel is large, if the size of the distal blood vessel with a small diameter is expanded, the purpose of full expansion cannot be achieved. When the large proximal end is dilated, it is easy to break the wall of the vessel with a smaller diameter at the distal end, which poses risks to the operation and seriously affects the life of the patient

Method used

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  • Balloon catheter provided with a balloon with two asymmetric ends
  • Balloon catheter provided with a balloon with two asymmetric ends
  • Balloon catheter provided with a balloon with two asymmetric ends

Examples

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Embodiment 1

[0028] Such as figure 1 As shown, the balloon catheter of the present invention is a rapid exchange (RX) balloon catheter, including a balloon 1, an inner tube 3, an outer tube 2, a head end 4 and a joint 5, wherein the inner tube 3 is arranged in the outer tube 2 , the inside of the inner tube 3 runs through for the guide wire to pass through, and the balloon 1 is sheathed on the distal end of the inner tube 3 . The slope sections 102 at both ends of the balloon 1 have an asymmetric structure after pressurization and expansion, that is, the slope sections 102 at both ends of the balloon 1 contract radially from the inside to the outside after pressurization and expansion, and the slope of the distal slope section is less than The slope of the near slope segment. Because the gradient of the slope section at the far end becomes smaller, the length of the inner tube 3 will be extended accordingly.

[0029] The axial section of the ramp section 102 of the balloon 1 shrinks radi...

Embodiment 2

[0038] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that this embodiment is an over-the-wire (OTW) type balloon catheter, and the guide wire interface 6 is arranged on the joint 5 . Others are all the same as in Embodiment 1.

[0039] Working principle of the present invention is:

[0040]In the interventional operation, after the balloon catheter passes through the stenotic lesion, it pressurizes and dilates the stenotic lesion to achieve the purpose of dilating blood vessels to improve blood supply to the myocardium, and also prepares for the next step of stent implantation. At present, the columnar part of the balloon is mainly used to dilate blood vessels. When the diameter difference between the two ends of the blood vessel is large, the distal blood vessel is easy to be damaged. At present, the inclined slope at the distal end of the balloon cannot expand blood vessels because of its large slope and short longitudinal diameter....

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Abstract

The invention belongs to the field of medical instruments, and particularly relates to a balloon catheter provided with a balloon with two asymmetric ends. The balloon catheter comprises the balloon,an outer tube, an inner tube and a connector, wherein the inner tube is sleeved with the balloon, the slope sections at the two ends of the balloon are of an asymmetric structure after being pressurized and expanded, that is, the slope sections of the two ends of the balloon retract inwards in the radial direction from inside to outside after being pressurized and expanded, and the gradient of thefar-end slope section is smaller than that of the near-end slope section. The slope sections at the two ends of the balloon of the balloon catheter are designed to be of the asymmetric structure, theballoon is mainly used for a blood vessel large in far-end and near-end diameter difference, the portion, at the far end of the blood vessel is expanded by the slope sections, and the far end of theblood vessel is prevented from being injured.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a balloon catheter with asymmetrical balloons at both ends. Background technique [0002] Percutaneous Coronary Intervention (PCI) refers to the treatment method of dredging the narrowed or even occluded coronary artery lumen through cardiac catheterization, so as to improve the blood perfusion of the myocardium. This treatment method has the advantages of short course of treatment, less trauma, and remarkable curative effect, and has developed rapidly in recent years. According to different implementation techniques, PCI can be divided into percutaneous coronary angioplasty (PTCA), coronary stent implantation, coronary atherectomy, cutting balloon angioplasty, and intracoronary thrombus aspiration. [0003] During the operation, the balloon is pressurized and expanded to become a cylindrical shape, supporting the narrow blood vessel wall to expand the blood vessel and improve myo...

Claims

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Application Information

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IPC IPC(8): A61M25/10A61M29/04
CPCA61M25/0026A61M25/0043A61M25/1002A61M25/1018A61M29/00A61M2025/1086A61M2025/105A61M2025/0008A61F2/958A61M25/10
Inventor 孙英贤
Owner 孙英贤