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a technology of emboli and containment, applied in the field of medical devices, can solve the problems of limited application of medical procedures to certain blood vessels, permanent brain damage, and substantial risks of procedures
Inactive Publication Date: 2006-09-07
ZADNO AZIZI GHOLAM REZA
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[0029] Another object of the invention is to provide an apparatus and method of the above character in which the amount of material removed from the stenosis or atheroma can be precisely controlled.
[0030] Another object of the invention is to provide an apparatus and method of the above character which makes it possible to treat stenoses or occlusions in the vessel which are normally not accessible for surgical procedures.
Problems solved by technology
The application of such medical procedures to certain blood vessels, however, has been limited, due to the risks associated with creation of emboli during the procedure.
For example, angioplasty is not the currently preferred treatment for lesions in the carotid artery, because of the possibility of dislodging plaque from the lesion, which can enter the various arterial vessels of the brain and cause permanent brain damage.
Instead, surgical procedures are currently used, but these procedures present substantial risks.
However, the procedures require the complex coordination of multiple catheters.
Method used
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[0087] Referring to FIG. 1, there is depicted an embodiment of the balloon catheter of the present invention. Although illustrated and described below in the context of an emboli containment system featuring balloon dilatation treatment of a stenotic lesion, it is to be understood that the present invention can be easily adapted to a variety of emboli containment treatment applications. For example, the present inventors contemplate that the catheter of the present invention can be used in emboli containment treatment procedures which include atherectomy, stent implantation, drug delivery, as well as other applications. Furthermore, although depicted and described as a two lumen catheter, it should be appreciated that the present invention may also be adapted to catheters having more than two lumen. The manner of adapting the present invention to these various treatments and structures will become readily apparent to those of skill in the art in view of the description which follows...
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Abstract
Disclosed herein is a catheter for use in an emboli containment system. In one embodiment, the catheter includes a flexible elongate member having self-expanding sealing means mounted on its distal extremity. This self-expanding sealing means can take any suitable form, such as a braided structure formed of a suitable shape memory material such as a nickel titanium alloy. In order to prevent abrasion of a vessel, it is desirable to cover the braided structure with a covering of a suitable material such as a polymer which extends over the braided structure and which moves with the braided structure as it expands and contracts.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a divisional of application Ser. No. 10 / 427,000, filed Apr. 30, 2003, which is a continuation of application Ser. No. 10 / 011,583, filed Nov. 6, 2001, which is a continuation of application Ser. No. 09 / 790,220, filed on Feb. 21, 2001, which is a continuation of application Ser. No. 08 / 813,023, filed on Mar. 6, 1997, now U.S. Pat. No. 6,270,477, which is a continuation-in-part of application Ser. No. 08 / 650,464 filed on May 20, 1996, now abandoned, the entirety of which is incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention generally relates to medical devices, and in particular, to catheters which can be used in an emboli containment system. This invention also relates to an apparatus and method for treating occluded vessels in living bodies and more particularly balloon catheters and balloon guide wires for treating occlusions in vessels in human ...
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Application Information
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Patent Type & Authority Applications(United States)