Guide wire guided double-layer saccule catheter for chemical ablation of blood vessel
A double-layer balloon and catheter technology is applied in the field of medical equipment to achieve the effects of reducing normal blood components, improving delivery efficiency and reducing drug dosage
Pending Publication Date: 2020-01-03
王怀杰
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- Application Information
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Problems solved by technology
[0005] At present, there is no chemical ablation catheter to achieve precise destruction, such as precise ethanol ablation of the vessel wall through a balloon catheter
Method used
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[0025] The present invention will be described in further detail below in conjunction with specific examples, but not as a limitation of the present invention.
[0026] Such as figure 1 As shown, the guidewire-guided double-layer balloon catheter for vascular chemical ablation of the present invention includes a catheter 1 and a double-layer balloon 2 arranged axially along the outer wall of the catheter. The balloon is coated on the outside of the catheter 1 as a closed structure. After the air or liquid is injected, the balloon can expand and expand, and the stenotic part of the blood vessel will be opened. The diameter of the catheter is 5Fr-10Fr. The diameter of the double-layer balloon 2 is 0.5cm-3.0cm, and the length is 3cm-10cm. The balloon can be used according to the needs. Available in non-compliant, semi-compliant, compliant and super-compliant materials.
[0027] Such as figure 2 with image 3 As shown, the front end of the catheter 1 is a guide wire pulling he...
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Abstract
The invention discloses a guide wire guided double-layer saccule catheter for chemical ablation of a blood vessel. The catheter comprises a catheter body and a double-layer saccule arranged along theaxial direction of the external wall of the catheter body, wherein the internal cavity of the catheter body is separated into a guide wire guiding passage, a saccule filling passage and a drug administration passage, which are independent of one another, along a radial direction; and the double-layer saccule comprises an inner-layer saccule and an outer-layer saccule which coat each other, an external cavity is formed between the inner-layer saccule and the outer-layer saccule after the inner-layer saccule and the outer-layer saccule are dilated, and the outer-layer saccule is of a loose porous structure and is uniformly and densely covered with micropores. After saccule dilatation, drugs are fed to the external cavity through the drug administration passage, enter the surface of the saccule through the micropores, are in contact with an endothelium of a target blood vessel and accurately destroy the wall of the target blood vessel; and in case of treating the same target blood vessel,compared with the traditional chemical destruction or thermal ablation, the catheter has the advantages that normal blood ingredients can be greatly reduced, and the dosage of the drugs is lowered.
Description
technical field [0001] The invention relates to medical equipment, in particular to a guide wire-guided double-layer balloon catheter for chemical ablation of blood vessels. Background technique [0002] Existing interventional catheters are divided into two categories according to their purpose: vascular recanalization and blood flow occlusion. Vascular recanalization catheters are used to dilate stenotic vessels through mechanical expansion or micro-cutting, in which drug-coated stents or balloons can release drugs after dilation to prevent vascular restenosis. Thrombolytic catheters also belong to vascular recanalization catheters, which play a role in recanalization by introducing thrombolytic drugs. The blood flow blocking catheter is an interventional catheter that blocks the blood flow by expanding the balloon and adhering to the wall. [0003] Common interventional catheters are balloon catheters, whose basic structure is a double-lumen structure, the central chann...
Claims
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Patent Timeline
Login to View More IPC IPC(8): A61B18/06A61B18/00A61M25/00A61M25/10
CPCA61B18/00A61B18/06A61B2018/00404A61B2018/00577A61M25/0032A61M25/1002A61M2025/0037A61M2025/105A61M2025/1086
Inventor 王怀杰
Owner 王怀杰