Mechanism for the deployment of endovascular implants

A technology for deploying mechanisms and blood vessels, applied in the field of vascular aneurysm embolization and similar vascular abnormalities, can solve problems such as limitations, and achieve the effects of convenience and application, increased cost, and easy relocation

Inactive Publication Date: 2005-08-10
MICROVENTION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a conventional microcoil technique, the successful application of the GDC approach has been largely limited to small aneurysms with narrow necks.

Method used

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  • Mechanism for the deployment of endovascular implants
  • Mechanism for the deployment of endovascular implants
  • Mechanism for the deployment of endovascular implants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] First refer to figure 1 , according to the present invention, a deployment mechanism for an intravascular device comprises an open proximal end 11 (see Figure 11 ), an extended flexible hollow deployment tube 10, and a distal portion terminating in an open distal end 13, and a continuous liquid passage cavity 15 formed between the proximal end and the distal end. A fixation sleeve 12 is secured around the distal portion of the deployment tube 10 and includes a distal extension 17 extending a short distance beyond the distal end 13 of the deployment tube. The deployment mechanism further comprises a coupling element 14 secured to the proximal end (only the proximal end of which is shown) of a filamentary intravascular device 16, which may be, for example, an embolic implant.

[0046] Deployment tube 10 is fabricated from stainless steel and is preferably formed in three sections, each sized to pass through a typical microcatheter. The proximal or main portion 10a is t...

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PUM

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Abstract

The invention discloses a mechanism used for the expansion of the implant (20) in the filamentous blood vessel, comprising a flexible expanding tube (10), an intracavity which extends between the proximal end and the distal end (11, 13) of the opening and a coupling element (14) connected with the proximal end of the implant. The tube is provided with a fixed bushing (12) which extends to the distal end and passes over the distal end. The coupling element is fixed in the bushing and can be released. The expanding tube and the connected implant pass through the blood vessel through the miniature pipe until the implant is positioned into the target blood vessel site. In order to separate the implant with the tube, liquid is injected through the cavity to put pressure on the coupling element so that the implant can be pushed out by the flowing pressure from the fixed bushing. The coupling element can comprise a purifying channel, which is used for air elimination from the miniature pipe before the implant passes through.

Description

[0001] Refer to related applications [0002] This application is a continuation-in-part of Application No. 09 / 692,248 filed October 18,2000. [0003] Federally funded research or development [0004] Not applicable Background of the invention [0005] The present invention relates to the field of methods and devices for embolization of vascular aneurysms and similar vascular abnormalities. More specifically, the present invention relates to mechanisms for deploying intravascular implants, such as microcoils, within targeted vascular sites, and releasing or disengaging the implants at the sites. [0006] Vascular embolism is desirable in many clinical situations. For example, vascular embolization has been used to control bleeding from blood vessels, shut off the blood supply to tumors, and plug vascular aneurysms, especially intracranial aneurysms. In recent years, vascular embolization for the treatment of aneurysms has received extensive attention. Several different tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00A61B17/12A61F2/06
CPCA61B17/12022A61B17/12163A61B2017/00539A61B2017/00867A61B2017/00535A61B17/1215A61B2017/12054A61B2017/1205A61B17/1214A61B2017/00477A61B17/1219
Inventor 戴维·A·费雷拉乔治·R·小格林布赖恩·科克斯罗伯特·F·罗森鲍库特
Owner MICROVENTION INC
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