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Auxiliary catheter for guiding delivery of endovascula stent

An inner stent and catheter technology, applied in the field of medical devices, to achieve the effect of efficient puncture and strong penetration

Active Publication Date: 2014-10-01
ORBUSNEICH MEDICAL SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to open up a smooth delivery channel for the whole balloon catheter delivery system and protect the stent from the influence of advancing resistance, there is still no effective solution

Method used

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  • Auxiliary catheter for guiding delivery of endovascula stent
  • Auxiliary catheter for guiding delivery of endovascula stent
  • Auxiliary catheter for guiding delivery of endovascula stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 As shown, the auxiliary catheter (catheter) for guiding intravascular stent delivery of the present invention is composed of a catheter adapter 1, a pushing section 3, a passing section 4 and a guide wire 5 sequentially connected from the proximal end to the distal end, and the length is 1400 ~ 1800mm. The guide wire 5 of the catheter and a section of the passing section 4 connected to the guide wire 5 are coated with a hydrophilic coating, and the length A of the hydrophilic coating area is 50-500 mm from the distal end of the guide wire 5 to the proximal end. The hydrophilic coating A has a double-layer structure on the bottom and the surface, and the bottom layer is made of polyester polymer material, polyether polymer material or a block of polyester polymer material and polyether polymer material. The polyester p...

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Abstract

The invention discloses an auxiliary catheter for guiding the delivery of an endovascula stent to provide a safe channel free of propelling resistance for stent delivery in interventional therapy. The auxiliary catheter for guiding the delivery of the endovascula stent is provided with a tubular catheter body, wherein the hardness of the catheter body becomes smaller gradually from the near end to the far end, the far end of the catheter body is an oblique incision, the far end of the oblique incision is connected with the near end of a guide wire which is a stainless steel wire or a nitinol wire and is 2 mm - 12 mm long, and the diameter of the guide wire is 0.2 mm - 0.4 mm. Compared with the prior art, the auxiliary catheter has the advantages that the far end of the guide wire is filiform, has high penetrating power and can efficiently puncture and pass through a severe narrow tortuous, or calcified or CTO diseased region, the far end of a passing section connected with the guide wire is an oblique incision so that a hemadostenosis region can be passed through conveniently and cutting of a diseased region can be achieved, and cut-down thrombi or plaques are sucked to provide the safe channel free of propelling resistance for stent delivery.

Description

technical field [0001] The invention relates to a medical device, in particular to a catheter for interventional treatment. Background technique [0002] Intravascular stent implantation in interventional therapy refers to placing an internal stent in the diseased segment on the basis of lumen balloon expansion to support the stenotic and occluded segment of the vessel and reduce the elastic retraction and reshaping of the vessel. The purpose of maintaining smooth blood flow in the lumen. Whether the stent can be delivered and released to the lesion smoothly and safely has become a common concern of medical workers. According to the release method of the stent, stents used in blood vessels can be divided into balloon-expandable stents and self-expandable stents. The self-expandable stent has good flexibility, which is beneficial to distorting blood vessels and calcified lesions, can conform to the natural curvature of the blood vessel wall, and is not easy to be deformed u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/95
Inventor 修建成董元利
Owner ORBUSNEICH MEDICAL SHENZHEN CO LTD
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