Patents by Inventor Aleksandr P. Korshok
Aleksandr P. Korshok has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 6814750Abstract: A prosthetic device for sustaining a vessel or hollow organ lumen (a stent) having a tubular wire frame (1) with rows of elongate cells (2) each having a larger axis and a smaller axis. The cells are arranged with the larger axis in the circumferential direction of the frame (2) and the smaller axis parallel to the axial direction thereof. Each cell is formed by two U-shaped wire sections, and in a plane perpendicular to the longitudinal axis one of the branches of the U-shaped wire sections in one row form together a closed ring shape (4) which provides the frame (1) with large radial stiffness. In the axial direction the frame (1) has only low stiffness so that it easily conforms to the vascular wall even if this deforms due to external loads. The interconnection between the cells (2) may be flexible.Type: GrantFiled: May 7, 2002Date of Patent: November 9, 2004Assignees: William Cook Europe A/S, Cook IncorporatedInventors: Zaza A. Kavteladze, Aleksandr P. Korshok, Andrej A. Kadnikov, Palle Hansen, Beth Ann Kirts
-
Publication number: 20020128707Abstract: A prosthetic device for sustaining a vessel or hollow organ lumen (a stent) has a tubular wire frame (1) with rows of elongate cells (2) having a larger axis and a smaller axis. The cells are arranged with the larger axis in the circumferential direction of the frame (2) and the smaller axis parallel to the axial direction thereof. Each cell is formed by two U-shaped wire sections, and in a plane perpendicular to the longitudinal axis one of the branches of the U-shaped wire sections in one row form together a closed ring shape (4) which provides the frame (1) with large radial stiffness. In the axial direction the frame (1) has only low stiffness so that it easily conforms to the vascular wall even if this deforms due to external loads. The interconnection between the cells (2) may be flexible.Type: ApplicationFiled: May 7, 2002Publication date: September 12, 2002Inventors: Zaza A. Kavteladze, Aleksandr P. Korshok, Andrej A. Kadnikov, Palle Hansen, Beth Ann Kirts
-
Patent number: 6383216Abstract: A prosthetic device for sustaining a vessel or hollow organ lumen (a stent) have a tubular wire frame (1) with rows of elongate cells (2) each having a larger axis and a smaller axis. The cells are arranged with the larger axis in the circumferential direction of the frame (2) and the smaller axis parallel to the axial direction thereof. Each cell is formed by two U-shaped wire sections, and in a plane perpendicular to the longitudinal axis one of the branches of the U-shaped wire sections in one row form together a closed ring shape (4) which provides the frame (1) with large radial stiffness. In the axial direction the frame (1) has only low stiffness so that it easily conforms to the vascular wall even if this deforms due to external loads. The interconnection between the cells (2) may be flexible.Type: GrantFiled: August 24, 2000Date of Patent: May 7, 2002Assignees: William Cook Europe A/S, Cook IncorporatedInventors: Zaza A. Kavteladze, Aleksandr P. Korshok, Andrej A. Kadnikov, Palle Hansen, Beth Ann Kirts
-
Patent number: 6336938Abstract: A prosthetic device for sustaining a vessel or hollow organ lumen (a stent) has a tubular wire frame (1) with rows of elongate cells (2) having a larger axis and a smaller axis. The cells are arranged with the larger axis in the circumferential direction of the frame (2) and the smaller axis parallel to the axial direction thereof. Each cell is formed by two U-shaped wire sections, and in a plane perpendicular to the longitudinal axis one of the branches of the U-shaped wire sections in one row form together a closed ring shape (4) which provides the frame (1) with large radial stiffness. In the axial direction the frame (1) has only low stiffness so that it easily conforms to the vascular wall even if this deforms due to external loads. The interconnection between the cells (2) may be flexible.Type: GrantFiled: May 25, 1995Date of Patent: January 8, 2002Assignees: William Cook Europe A/S, Cook IncorporatedInventors: Zaza A. Kavteladze, Aleksandr P. Korshok, Andrej A. Kadnikov, Palle Hansen, Beth Ann Kirts
-
Patent number: 5707376Abstract: An introducer (10) method of percutaneously deploying a self-expanding stent (14) in a body vessel or duct (43). The stent introducer includes an outer elongated member tube (11) having a passage (12) extending longitudinally therein and operable in a first direction (13) for deploying the self-expanding stent in a collapsed condition from the outer member passage. An inner elongated member (15) is positioned in the outer member passage and is operable in a second direction (16) for deploying the stent from the outer member passage. An interconnection mechanism (17) is connected to the outer and inner members for operation thereof, whereby a stent in a collapsed condition is deployed from the outer member passage to an expanded condition. When deployed, the expanded portion of the stent remains fixedly positioned longitudinally in the body vessel or duct as the remaining portion is deployed from the outer member passage.Type: GrantFiled: June 7, 1995Date of Patent: January 13, 1998Assignees: William Cook Europe A/S, Cook IncorporatedInventors: Zaza A. Kavteladze, Aleksandr P. Korshok, Scott E. Boatman
-
Patent number: 5683411Abstract: A medical article for implantation into the vascular system of a patient comprises a self expanding body shaped substantially into the form of a body (1; 2) of revolution, at least part of the surface of which is defined by wire members (3) forming cells of a generally polygonal shape. The body of revolution has a diameter increasing continuously in an axial direction of the body from one end forming an apex (4) towards the opposite end forming a base (5). In a preferred embodiment, the body (1; 2) of revolution is defined by a generatrix forming n-th order curve. The article may comprise two bodies (1; 2) of revolution joined at their apices (4). The article may be used, in particular as an intravenous filter for the capture of thrombi or in combination with an elastic blood impermeable membrane flexibly linked to the apex of the body of revolution as an occlusion device for closing a vessel lumen or defects such as ASD or PDA in vascular walls.Type: GrantFiled: June 7, 1995Date of Patent: November 4, 1997Assignee: William Cook Europe A/SInventors: Zaza A. Kavteladze, Aleksandr P. Korshok
-
Patent number: 5643339Abstract: A prosthetic device for sustaining a vessel or hollow organ lumen (a stent) has a tubular wire frame (1) with rows of elongate cells (2) having a larger axis and a smaller axis. The cells are arranged with the larger axis in the circumferential direction of the frame (2) and the smaller axis parallel to the axial direction thereof. Each cell is formed by two U-shaped wire sections, and in a plane perpendicular to the longitudinal axis one of the branches of the U-shaped wire sections in one row form together a closed ring-shape (4) which provides the frame (1) with large radial stiffness. In the axial direction the frame (1) has only low stiffness so that it easily conforms to the vascular wall even if this deforms due to external loads. The interconnection between the cells (2) may be flexible.Type: GrantFiled: February 1, 1995Date of Patent: July 1, 1997Assignee: William Cook Europe A/SInventors: Zaza A. Kavteladze, Aleksandr P. Korshok, Andrej A. Kadnikov
-
Patent number: D380831Type: GrantFiled: February 2, 1995Date of Patent: July 8, 1997Assignee: William Cook Europe A/SInventors: Zaza A. Kavteladze, Aleksandr P. Korshok, Andrej A. Kadnikov, Palle Hansen, Beth Ann Kirts