Device for minimally invasive intravascular aortic valve extraction
First Claim
1. A device for minimally invasive, intravascular aortic valve extraction inside the aorta comprising:
- a perfusion catheter having at least one perfusion channel designed as a hollow channel; and
at least two dilation units disposed at a distance from each other at the distal catheter region in the longitudinal extension of said catheter, both said dilation units being projected through by said perfusion catheter and forming, in an inflated state, an at least practically fluid-tight occlusion with the aortic wall,wherein at least a dilation unit disposed on the proximal side comprises an elastic, inflatable material and is provided with at least one passage outside of said perfusion catheter,wherein said at least one passage projects through said dilation unit disposed on the proximal side and is completely surrounded by said dilation unit disposed on the proximal side and through which at least one auxiliary catheter can be introduced for aortic valve ablation in a fluid-tight manner, andwherein the elastic, inflatable material of the dilation unit disposed on the proximal side seals said at least one passage fluid-tight without the provision of an auxiliary catheter when the dilation unit disposed on the proximal side is in an inflated state.
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Accused Products
Abstract
A perfusion catheter includes at least one perfusion channel and at least two dilation units disposed at a distance from each other at the distal catheter region in the longitudinal extension of the catheter. Both of the at least two dilation units are projected through by the perfusion catheter and form, in an inflated state, an at least practically fluid-tight occlusion with the aortic wall. At least the dilation unit disposed on the proximal side has at least one passage through which an auxiliary catheter can be introduced in a fluid-tight manner. The perfusion catheter may have a working channel with an outlet opening in the region between the two dilation units and through which at least one auxiliary catheter can be introduced for aortic valve ablation.
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Citations
17 Claims
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1. A device for minimally invasive, intravascular aortic valve extraction inside the aorta comprising:
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a perfusion catheter having at least one perfusion channel designed as a hollow channel; and at least two dilation units disposed at a distance from each other at the distal catheter region in the longitudinal extension of said catheter, both said dilation units being projected through by said perfusion catheter and forming, in an inflated state, an at least practically fluid-tight occlusion with the aortic wall, wherein at least a dilation unit disposed on the proximal side comprises an elastic, inflatable material and is provided with at least one passage outside of said perfusion catheter, wherein said at least one passage projects through said dilation unit disposed on the proximal side and is completely surrounded by said dilation unit disposed on the proximal side and through which at least one auxiliary catheter can be introduced for aortic valve ablation in a fluid-tight manner, and wherein the elastic, inflatable material of the dilation unit disposed on the proximal side seals said at least one passage fluid-tight without the provision of an auxiliary catheter when the dilation unit disposed on the proximal side is in an inflated state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for minimal-invasive, intravascular aortic valve extraction inside the human aorta comprising:
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introducing a coronary artery perfusion catheter having a perfusion channel into the right coronary artery and another perfusion catheter into the left coronary artery and inflating a cuff provided at each coronary artery perfusion catheter respectively, with a blood flow being ensured through said coronary artery perfusion catheters into the coronary arteries, intravascular introducing a perfusion catheter which is provided near its distal end with two dilation units disposed at a distance from each other, positioning said perfusion catheter inside the aorta in such a manner that the aortic valve is surrounded on both sides inside the aorta by said dilation units, inflating both of said dilation units in such a manner that said dilation units lie close to the aortic wall in a fluid-tight manner, emptying the blood volume inside said two dilation units by introducing at least one auxiliary catheter outside of the perfusion catheter and projecting through said dilation unit disposed on the proximal side to create a working volume, and severing the aortic valve inside said working volume by introducing at least one cutting instrument projecting through said dilation unit disposed on the proximal side, wherein the dilation unit disposed on the proximal side is provided with at least one passage outside of said perfusion catheter, wherein said at least one passage projects through said dilation unit disposed on the proximal side and is completely surrounded by said dilation unit disposed on the proximal side and through which the at least one cutting instrument is introduced in a fluid-tight manner, wherein an elastic, inflatable material of the dilation unit disposed on the proximal side seals said at least one passage fluid-tight without the provision of the at least one cutting instrument when the dilation unit disposed on the proximal side is in an inflated state. - View Dependent Claims (17)
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Specification