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Intravascular plaque removal device

A technology for removing devices and plaques, applied in medical science, surgery, etc., to achieve the effect of avoiding excessive blood loss, maintaining stability, and good sealing

Active Publication Date: 2017-10-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diamond back The biggest feature is that the same catheter can achieve different rotary cutting radii through speed control, and only contact with part of the tube wall at the same time, effectively reducing heat generation, but while controlling the rotary cutting radius, it can damage the inner wall of the diseased blood vessel. potentially destructive

Method used

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  • Intravascular plaque removal device
  • Intravascular plaque removal device
  • Intravascular plaque removal device

Examples

Experimental program
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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Such as Figure 1 to Figure 8 As shown, the intravascular plaque removal device of the present invention includes a main shaft 14 and a cutting head 8 sheathed on the main shaft 14 . The right end of the main shaft 14 is sealed, and the inside of the main shaft 14 is provided with a suction pipe 4 , a delivery pipe 5 and a filling pipe 13 which are integrated with the main shaft 14 in parallel. The main shaft 14 is provided with a proximal expandable auxiliary isolation cavity 1 with a filling hole 3 and a distal expandable auxiliary isolation cavity 2 with a filling hole 3 arranged left and right, the proximal expandable auxiliary isolation cavity 1 and the distal Both end-expandable auxiliary isolation chambers 2 communicate with the filling pipe 13 through respective filling holes 3 . The outer wall of the main shaft 14 is provided with a suction hole 11 co...

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PUM

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Abstract

The invention discloses an intravascular plaque removal device and method. The intravascular plaque removal device comprises a main shaft and a resection knife head which sleeves the main shaft, wherein a suction pipeline, a conveying pipeline and a filling pipeline are arranged inside the main shaft; a near-end expandable auxiliary isolating cavity and a far-end expandable auxiliary isolating cavity sleeve the main shaft; a suction hole and a conveying hole are formed in the outer wall of the main shaft; the suction hole and the conveying hole are located between the near-end expandable auxiliary isolating cavity and the far-end expandable auxiliary isolating cavity; the resection knife head is arranged between the suction hole and the conveying hole; a sleeve is arranged between the resection knife head and the main shaft; and limiting pieces are arranged at the left and right ends of the sleeve. The plaque removal device disclosed by the invention can discharge removed parts out of a body while working effectively and can prevent potential small plaque chips from flowing to a far end, so that the operative success rate is guaranteed to the greatest extent and the occurrence of complications is relieved; and the intravascular plaque removal device and method are applicable to intravascular plaque resection operations.

Description

technical field [0001] The present invention relates to a medical device, and more particularly to a device for removing plaque in blood vessels. Background technique [0002] For diseases such as arterial embolism, venous thrombosis, and arteriosclerotic obliterans, with the development of science and technology in recent years, the treatment method of percutaneous transluminal atherectomy has been greatly developed. Currently more mature systems include SilverHawk of Covidien in the United States TM Peripheral atherectomy system, PeripheralRotablator from Boston Scientific, USA TM Rotational Atherectomy System and Jetstream TM Atherectomy System, Straub Medical, Switzerland S, American Volcano Atherectomy System and Diamondback of CSI in the United States Peripheral Orbital Atherectomy System, etc. Silver Hawk TM etc. is a directional resection system consisting of a cutting device and a tubular casing (nasal cavity) that collects cutting debris. This system i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/22
CPCA61B17/22A61B2017/00778A61B2017/22067A61B2017/22072A61B2017/22079A61B2017/22084
Inventor 房丰洲张皓洋宋乐
Owner TIANJIN UNIV