Microcoil vaso-occlusive device with multi-axis secondary configuration

A technology of vascular occlusion and devices, which is applied in the field of vascular occlusion devices, and can solve problems such as unsatisfactory results

Inactive Publication Date: 2007-10-03
MICROVENTION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] While many prior art microcoil devices have had some success in treating small aneurysms with relatively narrow necks, it has been recognized that the most commonly used microcoil vaso-occlusive devices are in wide-necked aneurysms, especially In the brain, a satisfactory result has not yet been reached

Method used

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  • Microcoil vaso-occlusive device with multi-axis secondary configuration
  • Microcoil vaso-occlusive device with multi-axis secondary configuration
  • Microcoil vaso-occlusive device with multi-axis secondary configuration

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Embodiment Construction

[0025]Referring initially to Figures 1 to 4 and 8, there is shown a microcoil vaso-occlusive device 10 in accordance with a preferred embodiment of the present invention. Device 10 comprises a length of wire of suitable length forming a primary configuration of helical loop 12 (FIG. 2). Suitable materials for device 10 include platinum, rhodium, palladium, rhenium, tungsten, gold, silver, tantalum, and various alloys of these metals. Various surgical grades of stainless steel are also available. Preferred materials include a platinum / tungsten alloy known as Platinum 479 (92% Pt, 8% W, available from Sigmund Cohn, of Mount Vernon, NY) and a titanium / nickel alloy (such as "Nitinol" titanium / nickel alloy). Another potentially advantageous material is a bimetallic wire comprising a highly elastic metal and a highly radiopaque metal. This bimetallic wire is also resistant to permanent deformation. An example of such a bimetallic wire is a product comprising an outer layer of Ni...

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Abstract

A blood vessel blocking device with multi-axis two-class configuration for treating the aneurysm by arranging it in the aneurysm has the micro-coil for generating two-class configuration with minimal energy state. Said two-class configuration has multiple curved segments to respectively define multiple discrete axles. In a preferable scheme, said two-class configuration has multiple circular rings tangent mutually. Another scheme is also described.

Description

[0001] Cross References to Related Applications [0002] Not applicable. [0003] Federally funded research or development [0004] Not applicable. Background of the invention [0005] The present invention generally relates to the field of vascular occlusion devices and methods. More particularly, the present invention relates to devices and methods for occluding blood vessels by embolizing a target site in the blood vessel, such as an aneurysm. [0006] Vascular embolization is desired in many clinical situations. For example, vascular embolization has been used to control vascular bleeding, block blood supply to tumors, and occlude vascular aneurysms, especially intracranial aneurysms. Vascular embolization for the treatment of aneurysms has attracted much attention in recent years. Several different treatment modalities have been employed in the prior art. For example, US Patent 4,819,637 to Dormandy, Jr. et al. describes a vascular embolization system utilizing a de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12
Inventor 迪安・谢弗霍拉西奥・阿尔马桑大卫・A・费雷拉布赖恩・J・考克斯小乔治・R・格林
Owner MICROVENTION INC
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