Protective angioplasty device
First Claim
1. A device for the implantation of expandable stents in a vascular vessel, allowing for temporary protection of downstream organs, comprising:
- a central stent pusher part surrounded by a stent-releasing part, said central stent pusher part being provided with an axial lumen bearing at its distal end an atraumatic tip,a stent loading cavity designed to contain a stent in a radially contracted state extending near the distal end of the stent pusher part,whereinsaid atraumatic tip is prolonged by a tip balloon part comprising an inflatable occlusive balloon hermetically connected via the axial lumen to an injector adapted to feed said balloon with a physiologically acceptable fluid at predetermined rates, anda fluid-releasing section extends at a proximal side of the occlusive balloon, said releasing section being able to release the fluid from the balloon into an upstream section of the vessel when the pressure of said fluid reaches a predetermined level.
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Accused Products
Abstract
The present invention relates to a device for protected angioplasty, intended for the implantation of luminal endoprosthesis (or stent) in critical areas such as carotid or vertebral arteries, where protection of downstream-situated organs is highly desirable. The device comprises a central stent pusher part comprising a microcatheter bearing at its distal end an atraumatic tip, the atraumatic tip being prolonged by a tip balloon part comprising an inflatable occlusive balloon which may be inflated with a physiologically acceptable fluid at predetermined rates, a fluid-releasing section extending at the proximal the of the occlusive balloon, said releasing section being able to release the fluid from the balloon into an upstream section of the vessel when the pressure of the fluid reaches a predetermined level.
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Citations
20 Claims
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1. A device for the implantation of expandable stents in a vascular vessel, allowing for temporary protection of downstream organs, comprising:
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a central stent pusher part surrounded by a stent-releasing part, said central stent pusher part being provided with an axial lumen bearing at its distal end an atraumatic tip, a stent loading cavity designed to contain a stent in a radially contracted state extending near the distal end of the stent pusher part, wherein said atraumatic tip is prolonged by a tip balloon part comprising an inflatable occlusive balloon hermetically connected via the axial lumen to an injector adapted to feed said balloon with a physiologically acceptable fluid at predetermined rates, and a fluid-releasing section extends at a proximal side of the occlusive balloon, said releasing section being able to release the fluid from the balloon into an upstream section of the vessel when the pressure of said fluid reaches a predetermined level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 19)
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12. A device for the implantation of expandable stents in a vascular vessel, allowing for temporary protection of downstream organs, comprising:
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a central stent pusher part surrounded by a stent-releasing part, said central pusher part being provided with an axial lumen bearing at its distal end an atraumatic tip, a stent loading cavity designed to contain a stent in a radially contracted state extending near the distal end of the stent pusher part, and a microguide wires, wherein the atraumatic tip is prolonged by a tip balloon part comprising an inflatable occlusive balloon hermetically connected via the axial lumen to an injector adapted to feed said balloon with a physiologically acceptable fluid at predetermined rates, a fluid-releasing section extends at the proximal side of the occlusive balloon, said releasing section being able to release the fluid from the balloon into an upstream section of the vessel when the pressure of said fluid reaches a predetermined level, and the microguide wire is anchored at a distal side of the occlusive balloon. - View Dependent Claims (13)
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14. A device for performing angioplasty in a vascular vessel, allowing for temporary protection of downstream organs, comprising:
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a central pusher part provided with an axial lumen, bearing at its distal end a tip balloon part comprising an inflatable occlusive balloon hermetically connected via the axial lumen to an injector adapted to feed said balloon with a physiologically acceptable fluid at predetermined rates, a fluid-releasing section extending at a proximal side of the occlusive balloon, said releasing section being able to release the fluid from the balloon into an upstream section of the vessel when the pressure of said fluid reaches a predetermined level, and a dilatation balloon axially displaceable relative to the tip balloon. - View Dependent Claims (15, 16, 17, 18, 20)
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Specification