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Medical equipment and nested balloon catheter thereof

A balloon catheter and balloon technology, applied in the field of drug-coated balloons for the treatment of vascular stenosis, can solve the problems of toxic reaction distal capillaries, embolism, and decreased drug utilization

Pending Publication Date: 2022-03-25
DK MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the delivery process, due to the washing of the blood, the drug coating of DCB will have particles that fall off and disperse into the blood, reducing the utilization of the drug. At the same time, the drug particles dispersed in the blood flow with the blood, which may affect normal Adverse effects such as vascular toxicity and embolism of distal capillaries

Method used

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  • Medical equipment and nested balloon catheter thereof
  • Medical equipment and nested balloon catheter thereof
  • Medical equipment and nested balloon catheter thereof

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0072] This embodiment is an OTW type coronary drug nested balloon catheter, and the outer diameter of the matching guide wire is 0.014 inches.

[0073] Specifically, such as figure 1 and Figure 4 As shown, the outer balloon P2 is made of nylon 12 balloon tube blow-molded, its diameter can be 4mm-5mm, the length is 10mm-40mm, the double wall thickness is 0.0010inch-0.0014inch, and the round hole K1 on its surface The diameter is 0.1mm-0.5mm, and they are evenly distributed along the radial and circumferential directions of the outer balloon P2. The inner balloon P3 is blow-molded by Pebax7233 balloon tube, with a diameter of 2mm-4.5mm, an effective length of 8mm-35mm, and a double wall thickness of 0.0009inch-0.0015inch. The first balloon gap T1 between the outer balloon P2 and the inner balloon P3 is connected to the third Luer connector P8 through the second filling lumen T4 of the double lumen tube P6. Through the third Luer connector P8, the drug can be injected into t...

specific Embodiment 2

[0076] This embodiment is an OTW type peripheral drug nested balloon catheter, and the outer diameter of the matching guide wire is 0.035 inches.

[0077] Specifically, such as figure 1 and Figure 5As shown, the outer balloon P2 is blow-molded from a double-layer material balloon tube, its diameter can be 3mm-7mm, the length is 10mm-200mm, the thickness of the double-layer wall is 0.0010inch-0.0018inch, and the strip groove on its surface The diameter is 0.1mm-0.5mm, the length is 1mm-3mm, and they are evenly distributed along the radial and circumferential directions of the outer balloon P2. The inner balloon P3 is blow-molded by nylon 11 balloon tube, with a diameter of 2mm-7mm, an effective length of 10mm-200mm, and a double wall thickness of 0.0013inch-0.0020inch. The first balloon gap T1 between the outer balloon P2 and the inner balloon P3 is connected to the third Luer connector P8 through the second filling lumen T4 of the double lumen tube P6. Through the third Lu...

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Abstract

According to the nested balloon catheter, in the using process, a doctor can convey the nested inner balloon and outer balloon to a focus according to a balloon plasty, the gap of the second balloon can be filled with a medium through the second catheter, and dilatation can be conducted according to a standard balloon dilatation. After expansion is completed, medicine can be injected into the gap of the first balloon through the third catheter. The medicine is released to the surface of the blood vessel through the through holes in the surface of the outer balloon or through rupture of the outer balloon. After the release is completed, the balloon is recovered according to a standard balloon dilatation. According to the arrangement, the surface of the balloon is not provided with a medicine coating, so that the risk of medicine falling does not exist in the operation process, the conveying loss and medicine particles can be eliminated, and the medicine utilization rate is improved; meanwhile, the adverse effects of toxic reaction on normal blood vessels, embolism of far-end capillary vessels and the like caused by drug particles dispersed in the blood along with flowing of the blood are reduced. The invention further provides medical equipment with the nested balloon catheter.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a drug-coated balloon for treating blood vessel stenosis. Background technique [0002] In the prior art, percutaneous coronary intervention, whether it is ordinary balloon angioplasty (POBA) or stent implantation, continues to benefit from technological progress. Early POBA techniques, once widely available, had limitations related to elastic recoil and restrictive dissections. The invention of the stent overcomes this. For stents, excessive intimal hyperplasia after bare metal stent implantation will lead to a higher restenosis rate, and new technologies have driven the birth of drug-eluting stents. It can elute antiproliferative drugs (such as paclitaxel, sirolimus, etc.) to the inner wall of blood vessels for a long time and slowly, thereby reducing the rate of restenosis. However, the nearly 2% annual risk of late stent thrombosis and restenosis after drug-eluting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/10
CPCA61M25/1011A61M25/10181A61M25/10183A61M25/1025A61M25/1029A61M25/104A61M25/0023A61M2025/1013A61M2025/105A61M2025/1079
Inventor 石全曹苹王书晗翁玉麟牛冬子
Owner DK MEDICAL TECH CO LTD
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