Transcatheter device for the ablation of calcified tissue at the flaps of an aortic valve

An aortic, device technology used in surgery and interventional cardiology to address issues such as implant movement, paravalvular leaks, etc.

Active Publication Date: 2017-05-24
奥蒂科勒勃(股份)责任有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, implantation of TAVI under these conditions has several major clinical drawbacks, such as the presence of paravalvular leaks (such leaks can be significant) or migration of the TAVI implant

Method used

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  • Transcatheter device for the ablation of calcified tissue at the flaps of an aortic valve
  • Transcatheter device for the ablation of calcified tissue at the flaps of an aortic valve
  • Transcatheter device for the ablation of calcified tissue at the flaps of an aortic valve

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Experimental program
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Effect test

Embodiment Construction

[0024] The ablation device consists directly of a catheter whose dimensions allow it to be used in this type of procedure, or inserted in any known and suitable type of introduction catheter.

[0025] Such as figure 1 As shown, in particular, the device comprises a soft body 1 that acts as a catheter and has a soft and flexible end piece 2 adapted to pass through the leaflets of the calcified native valve and positioned at the site where the calcified material is to be removed. Above the portion, the end piece is engageable with a guide wire g. The end piece 2 has at least one cutting system 3 installed in combination with a vacuum suction device 4 . The end piece 2 is additionally equipped with adjustable guide means 5 adapted to engage calcified tissue during an ablation operation performed by the cutting system 3 and to create a helical path effect on said end piece 2 .

[0026] As indicated in the following description, ablation of tissue is performed along a helical tra...

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Abstract

This transcatheter device for the ablation of calcified tissue at the flaps of an aortic valve, is characterised in that it comprises a flexible body (1) acting as a catheter and having a soft and flexible end piece (2) that engages with a previously inserted wire guide (g) suitable for passing through the flaps of the valve above the part where the calcified tissue needs to be removed, said end piece (2) having at least one cutting system (3) comprising two motorised rotating cutting heads (3a) and (3b) disposed coaxially one above the other, the head (3a) located at the end of the end piece and acting first to remove the calcified tissue, has arrangements suitable for making a rough cut by grinding, while the other head (3b) has arrangements suitable for making a fine cut by grinding, said cutting system being mounted in combination with a vacuum suction means (4), said end piece (2) being provided with an adjustable guide means (5) suitable for engaging with the calcified tissue over the course of the ablation operation performed by the cutting system (3) in combination with a spiral path effect applied to the end piece.

Description

technical field [0001] The present invention relates to surgery and interventional cardiology, and in particular, to transcatheter devices for ablation of calcified tissue, especially heart valves. Background technique [0002] It is well known that severe disease of the aortic valve is mainly due to degenerative calcification of the valve, which increases with age. Therefore, when the valve becomes extremely narrow and clinical symptoms appear, surgical intervention is required to replace the valve or to implant the valve by transcatheter approach, known by the acronym TAVI. [0003] It has been found that implantation of an aortic valve through TAVI through a calcified aortic valve often results in paravalvular leak when the concentration of calcium nuclei is too high and out of balance. These leaks can have an impact on the patient's life expectancy. Another complication due to the presence of calcium during TAVI is embolism, which can cause coronary embolism, infarctio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/3207A61F2/24
CPCA61F2/2496A61B2017/22071A61B2017/22098A61B17/320758A61B2017/320791A61B2017/22097A61B17/320783A61B2090/3966A61B17/2202A61B2017/22038A61B2017/22079
Inventor B·佩恩M·沃拉E·帕斯奎诺
Owner 奥蒂科勒勃(股份)责任有限公司
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