Implant with attached element and method of making such an implant

• US 9,480,587 B2
• Filed: 09/24/2014
• Issued: 11/01/2016
• Est. Priority Date: 08/18/2000
• Status: Expired due to Term

• Current Assignee: Angiomed GmbH & Co. Medizintechnik KG
• Original Assignee: Angiomed GmbH & Co. Medizintechnik KG
• Inventors: Supper, Wolfgang, Gamer, Walter
• Primary Examiner(s): Prone, Christopher D
• Application Number:
  US14/495,820
• Publication Number:
  US 20150073532A1
• Time in Patent Office: 769 Days
• US Class Current: 1/1
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• 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 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61L 31/022 Metals or alloys
• CPC Class Codes: A61L 31/18 Materials at least partially X-ray or laser opaque

Abstract

A stent having an axial end to which is attached a ring of spoons of a material different from that of the stent. In one aspect, the ring of spoons is connected to the axial end through a plurality of complementary male-female form-fitting portions. In one aspect, the ring of spoons include parallel straight side edges. In one aspect, each of the side edges lies within a first distance from a facing side edge of an adjacent spoon in a stent delivery configuration, and each of the side edges lies within a second distance, greater than the first distance, from the facing side edge of an adjacent spoon in a stent deployed configuration.

Claims

1. A stent, having:

an axial end; and

a ring of spoons connected to the axial end through a plurality of complementary male-female form-fitting portions, the ring of spoons comprising;

parallel straight side edges; and

a material different from a material composing the stent, wherein;

the stent expands from a delivery configuration to a deployed configuration and the diameter of the deployed configuration is greater than the diameter of the delivery configuration; and

each of the side edges lies within a first distance from a facing side edge of an adjacent spoon in the delivery configuration, and each of the side edges lies within a second distance, greater than the first distance, from the facing side edge of an adjacent spoon in the deployed configuration.

2. The stent according to claim 1, wherein the material of the ring of spoons is tantalum.

3. The stent according to claim 2, wherein the material composing the stent is either stainless steel or a nickel-titanium shape memory alloy.

4. The stent according to claim 1, wherein the ring of spoons is attached to the stent via laser-welding.

5. The stent according to claim 1, wherein each spoon of the ring of spoons has an axial length between a first end and a second end, the first end having the form-fitting portion and the second end having a convex shape.

6. The stent according to claim 1, wherein each spoon of the ring of spoons has a luminal major surface and an abluminal major surface, each of the major surfaces being arcuate and within a cylindrical envelope which corresponds to the delivery configuration.

7. The stent according to claim 6, wherein each spoon of the ring of spoons extends around about one quarter of a circumference of the stent.

8. The stent according to claim 1, wherein the ring of spoons are radiopaque markers.

9. The stent according to claim 1, wherein the complementary male-female formfitting portions have complementary tapered mating surfaces lying in a plane that intersects a longitudinal axis of the stent.

10. The stent according to claim 9, wherein the tapered mating surfaces constitute the female portion of the male-female form-fitting portions.

11. The stent according to claim 10, wherein each of the tapered mating surfaces has a barbed, arrowhead shape.

12. The stent according to claim 11, wherein the ring of spoons is attached to the stent via laser-welding.