Device for creating openings in pressurized vessels with deformable walls
Inventors
Assignees
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Publication Number
US-8273078-B2
Publication Date
2012-09-25
Expiration Date
Abstract
The catheter (1) has a fastener (10) for firmly holding the wall (19) of vessel (18) when it is cut by optical fibers (3). The fastener (10) has an engaging element which can be a pin (20), roughened surface (23), spiral grooves (27), dendritic grooves (31), adhesive surface (34) or pointed pins (38).
Core Innovation
The invention relates to a catheter for performing arteriotomies on intracorporeal vessels. A ring shaped cutting device is positioned at the distal end of a tubular body for cutting a hole in a wall of a vessel to be treated, and vacuum suction is applied through a bore inside the tubular body and the cutting device to draw and firmly hold a portion of the wall of the vessel that forms the hole while the hole is cut by the cutting device.
The catheter includes a fastener positioned in the bore at the distal end of the bore, adapted to firmly hold the portion of the vessel wall that forms the hole when vacuum suction is applied. The fastener is a porous member mounted in the bore, and a protrusion extends outward from the member towards the distal end of the bore.
The protrusion and the porous-member configuration are used to firmly hold the vessel wall so that a hole can be cut while the vacuum suction is applied through the bore. Example forms include porous fabric, perforated plate, and a non-porous rim combined with a porous central portion, as well as grooves or roughened/adhesive surfaces and pointed pins that extend outward.
Claims Coverage
The independent claim is directed to an arteriotomy catheter that uses vacuum suction through a bore together with a ring shaped cutting device and a porous-member fastener with an outward protrusion. The dependent claims recite refinements to the cutting device structure and to the fastener geometry and surface features, including specific porous and non-porous rim configurations and protrusion positioning relationships.
Catheter for arteriotomy with vacuum suction and ring shaped cutting device
A catheter comprising a tubular body, a ring shaped cutting device positioned at the distal end for cutting a hole in a wall of an intracorporal vessel, a bore inside the tubular body and the cutting device, and a vacuum suction applied through the bore so that the hole is cut by the cutting device while vacuum suction is applied through the bore.
Porous member fastener firmly holding the vessel wall portion during cutting
A fastener positioned in the bore at the distal end of the bore, adapted to firmly hold a portion of the wall of the vessel that forms the hole when vacuum suction is applied through the bore and the hole is cut by the cutting device.
Porous member with outward protrusion toward the distal end of the bore
The fastener is a porous member mounted in the bore, wherein a protrusion extends outward from the member towards the distal end of the bore.
Across the claim set, the inventive concept is anchored by combining vacuum suction through the bore, a ring shaped distal cutting device, and a porous-member fastener that includes an outwardly extending protrusion to firmly hold the vessel wall portion that forms the hole during cutting.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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