Radiopaque marker for intraluminal medical device

• US 20070266542A1
• Filed: 05/04/2007
• Published: 11/22/2007
• Est. Priority Date: 05/08/2006
• Status: Abandoned Application

• Current Assignee: Cook Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Incorporated (Cook Group Incorporated)
• Inventors: Melsheimer, Jeffry
• Application Number:
  US11/800,218
• Publication Number:
  US 20070266542A1
• Time in Patent Office: Days
• US Class Current: 29/522.100
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61F 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2240/00 Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/49908 Joining by deforming
• CPC Class Codes: Y10T 29/49938 Radially expanding part in cavity, aperture, or hollow body

Abstract

An intraluminal medical device including at least one radiopaque marker is described. The radiopaque marker includes an eyelet having a thickness and an opening extending through the thickness from a first side to a second side. The opening is defined by at least an inclined surface generally facing toward the first side and a recessed region generally facing toward the second side. The recessed region is disposed about only a portion of a perimeter of the opening. A radiopaque rivet is disposed within the opening. The radiopaque rivet includes a first portion engaging the inclined surface and a second portion engaging the recessed region.

Claims

1. An intraluminal medical device comprising at least one radiopaque marker, the radiopaque marker comprising:

an eyelet comprising a thickness and an opening extending therethrough from a first side to a second side, the opening being defined by at least an inclined surface generally facing toward the first side and a recessed region generally facing toward the second side, the recessed region being disposed about only a portion of a perimeter of the opening; and

a radiopaque rivet disposed within the opening, the radiopaque rivet comprising a first portion engaging the inclined surface and a second portion engaging the recessed region.

2. The intraluminal medical device according to claim 1, wherein at least a portion of the first surface extends entirely through the thickness of the eyelet from the first side to the second side.

3. The intraluminal medical device according to claim 1, wherein the recessed region extends only partially through the thickness of the eyelet from the second side to a position between the second side and the first side.

4. The intraluminal medical device according to claim 1, wherein the recessed region extends entirely through the thickness of the eyelet from the second side to the first side.

5. The intraluminal medical device according to claim 1, comprising two recessed regions positioned opposite of each other about the perimeter of the opening.

6. The intraluminal medical device according to claim 1, wherein the recessed region comprises a curved cross-section.

7. The intraluminal medical device according to claim 6, wherein the recessed region comprises a curved cross-section along a first plane passing through the thickness of the eyelet and bisecting the recessed region.

8. The intraluminal medical device according to claim 7, wherein the recessed region comprises a curved cross-section along a second plane, the second plane passing through the thickness of the eyelet and disposed perpendicular to the first plane.

9. The intraluminal medical device according to claim 1, wherein the eyelet further comprises an exterior surface at one of the first side and the second side and an interior surface at the other of the first side and the second side, the exterior surface comprising a first radius of curvature and the interior surface comprising a second radius of curvature.

10. The intraluminal medical device according to claim 9, wherein the exterior surface is substantially flush with an exterior surface of the radiopaque rivet, and the interior surface is substantially flush with an interior surface of the radiopaque rivet.

11. The intraluminal medical device according to claim 10, further comprising a generally tubular structure, the radiopaque marker being disposed at an end of the generally tubular structure.

12. The intraluminal medical device according to claim 11, wherein the the first radius of curvature is substantially the same as an inner radius of the generally tubular structure in a compressed state, and the second radius of curvature is substantially the same as an outer radius of the generally tubular structure in a compressed state.

13. The intraluminal medical device according to claim 11, wherein the tubular structure and the eyelet are integrally formed.

14. An intraluminal medical device comprising at least one radiopaque marker, the radiopaque marker comprising:

an eyelet comprising a thickness and an opening extending therethrough from a first side to a second side, the opening being defined by at least an inclined surface generally facing toward the first side and two recessed regions disposed opposite of each other about a perimeter of the opening and generally facing toward the second side, wherein each recessed region is disposed about only a portion of the perimeter; and

a radiopaque rivet disposed within the opening, the radiopaque rivet comprising a first portion engaging the inclined surface and a second portion engaging the two recessed regions;

wherein the eyelet further comprises an exterior surface comprising a first radius of curvature and an interior surface comprising a second radius of curvature, the exterior surface being substantially flush with an exterior surface of the radiopaque rivet and the interior surface being substantially flush with an interior surface of the radiopaque rivet.

15. The intraluminal medical device according to claim 14, further comprising a generally tubular structure, the radiopaque marker being disposed at an end of the generally tubular structure,

wherein the first radius of curvature is substantially the same as an inner radius of the generally tubular structure in a compressed state, and the second radius of curvature is substantially the same as an outer radius of the generally tubular structure in a compressed state,

wherein the eyelet and the tubular structure are integrally formed, and wherein the intraluminal medical device is a stent.

16. A method of making an intraluminal medical device including at least one radiopaque marker, comprising:

providing a thin-walled tube;

forming a generally tubular structure and an eyelet from the thin-walled tube, the forming of the eyelet comprising forming an opening extending through a thickness of the eyelet from a first end to a second end, the forming of the opening comprising at least forming an inclined surface generally facing toward the first end and forming a recessed region generally facing toward the second end of the eyelet;

inserting a radiopaque rivet into the opening of the eyelet; and

securing the radiopaque rivet within the opening of the eyelet, a first portion of the radiopaque rivet engaging the inclined surface and a second portion of the radiopaque rivet engaging the recessed region.

17. The method of claim 16, wherein the forming of the generally tubular structure and the eyelet and the forming of the surface of the opening comprise laser cutting.

18. The method of claim 16, wherein the forming of the recessed region of the opening comprises grinding.

19. The method of claim 16, wherein the forming of the recessed region of the opening comprises laser cutting.

20. The method of claim 16, wherein the securing of the radiopaque rivet in the opening of the eyelet comprises swaging, the swaging comprising compressing and deforming the radiopaque rivet between a die and a mandrel.