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Apparatus and methods for filtering emboli during percutaneous aortic valve replacement and repair procedures with filtration system coupled in-situ to distal end of sheath

A technology of aortic valve and aortic arch, applied in the direction of filters in blood vessels, heart valves, etc.

Inactive Publication Date: 2015-04-22
NEXEON MEDSYST INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As with product failure, this type of interaction can cause the device to bind together with catastrophic consequences if it collapses during cannula exchange

Method used

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  • Apparatus and methods for filtering emboli during percutaneous aortic valve replacement and repair procedures with filtration system coupled in-situ to distal end of sheath
  • Apparatus and methods for filtering emboli during percutaneous aortic valve replacement and repair procedures with filtration system coupled in-situ to distal end of sheath
  • Apparatus and methods for filtering emboli during percutaneous aortic valve replacement and repair procedures with filtration system coupled in-situ to distal end of sheath

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Embodiment Construction

[0027] Embodiments of the present invention provide an embolic filter that can be readily used during percutaneous aortic valve replacement and repair procedures and overcomes the above-mentioned disadvantages of previously known systems. The inventive filter can be compressed to a size suitable for percutaneous delivery into the aorta using a relatively small diameter sheath, such as an 18Fr sheath, mounted on an introducer with tapered protrusions, and The filter is disposed at the distal end of the sheath. The sheath containing the introducer and compressed filter is then introduced to the aortic arch via the peripheral arterial system (eg, femoral artery) and ascending aorta. The filter is then deployed from the distal end of the sheath by retracting the sheath relative to the introducer so that the filter expands to the deployed configuration at a location upstream of the aorta, and the introducer is then removed. The filter is configured to rest firmly against the dista...

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Abstract

Embodiments of the present invention provide apparatus and methods for embolic filtering during percutaneous valve replacement and repair procedures. Under one aspect, an apparatus comprises a sheath and a filter. The sheath has proximal and distal ends and a lumen therebetween. The distal end may be introduced into the aortic arch via the peripheral arteries and ascending aorta, while the proximal end may be disposed outside of the body. The lumen permits percutaneous aortic valve replacement or repair therethrough. The filter has a frame with an inlet and an outlet and an emboli-filtering mesh attached to the frame. The inlet is substantially spans the aortic arch in a region between the aortic valve and the great arteries. The outlet couples to the distal end of the sheath without leaving any gaps through which emboli could pass and without obstructing the lumen at the distal end of the sheath.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application Serial No. 61 / 613890, filed March 21, 2012. technical field [0003] The present application generally relates to filtering emboli during interventional procedures, in particular, percutaneous aortic valve replacement and repair procedures. Background technique [0004] The recent development of prosthetic valves, which can be placed in the heart by cannulation without the need for thoracotomy, represents a huge advance in the field of cardiovascular medicine. Preliminary results were very promising and an overall reduction in mortality was achieved using transcatheter aortic valve implantation (TAVI) in surgically high-risk patients compared with medical therapy. One of the limitations of the widespread acceptance of this technique is the inherent risk of embolic complications during valve entry, expansion, and implantation. For example, each lead, intro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/01
CPCA61F2/013A61F2/2427
Inventor M·C·贝茨
Owner NEXEON MEDSYST INC
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