Modular vascular prosthesis and methods of use

• US 8,603,154 B2
• Filed: 09/23/2011
• Issued: 12/10/2013
• Est. Priority Date: 02/25/2005
• Status: Active Grant

• Current Assignee: Abbott Laboratories Limited (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Laboratories Limited (Abbott Laboratories Incorporated)
• Inventors: Strauss, David P., Bialas, Michael R., DeMore, Duane, Barbier, Robert, Bregulla, Rainer
• Primary Examiner(s): SEVERSON, RYAN J
• Application Number:
  US13/243,884
• Publication Number:
  US 20120102708A1
• Time in Patent Office: 809 Days
• Field of Search: 623 115- 118, 623/1.38
• US Class Current: 623/1.16
• CPC Class Codes: A61F 2/852 Two or more distinct overlapping stents
• 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 2002/30019 differing in mechanical expandability, e.g. in mechanical, self- or balloon expandability
• CPC Class Codes: A61F 2002/30428 made by inserting a protrusion into a slot
• CPC Class Codes: A61F 2002/30604 modular
• CPC Class Codes: A61F 2002/30677 Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
• 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 2002/91566 connected trough to trough
• CPC Class Codes: A61F 2002/91591 Locking connectors, e.g. using male-female connections
• CPC Class Codes: A61F 2220/0025 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2250/0048 differing in mechanical expandability, e.g. in mechanical, self- or balloon expandability
• CPC Class Codes: A61F 2250/0063 Nested prosthetic parts
• CPC Class Codes: A61F 2250/0067 Means for introducing or releasing pharmaceutical products into the body
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

The present invention relates a vascular prosthesis and related assembly methods that includes a plurality of modular segments inter-engaged by flexible, and preferably lockable, inter-engageable elements forming joints or other connector areas. The segments may have a number of different mechanical properties and may be assembled by the clinician, through mechanical or chemical joining, to customize the prosthesis for a specific patient or application.

Claims

1. A method of assembling a modular prosthesis comprising:

providing one or more interlocking modular segments, wherein each interlocking modular segment has a proximal and a distal end, a plurality of struts and a plurality of bends disposed between the proximal and distal ends, a ring shaped male interface element at the proximal end of a first modular segment, and a rounded female interface element at the distal end of a second modular segment,

the ring shaped male interface element comprising a disk shaped element having a circumferentially projecting peripheral flange extending about a periphery of the disk shaped interface element, the disk shaped interface element having a thickness approximately equal to a first thickness and the circumferentially projecting flange having a thickness that is less than the first thickness, and

the rounded female interface element comprising a socket element configured to accept the disk shaped element and overlie the flange of the ring shaped male interface element, the socket element having a thickness that is less than the first thickness;

joining the one or more interlocking modular segments by inserting the ring shaped male interface element at the proximal end of a first interlocking modular segment into the rounded female interface element at the distal end of a second interlocking modular segment

providing a plurality of interlocking modular segments in addition to the first and second interlocking modular segments; and

joining the additional interlocking modular segments by inserting the ring shaped male interface element at the proximal end of one or more interlocking modular segments into the rounded female interface element at the distal end of another one or more interlocking modular segments,

thereby causing a plurality of interlocking modular segments to extend from the proximal end of the first interlocking modular segment, and a plurality of interlocking modular segments to extend from the distal end of the second interlocking modular segment.

2. A method for assembling a vascular prosthesis comprising:

providing at least a first modular segment and a second modular segment wherein each modular segment has a proximal and a distal end,

wherein each modular segment further has a plurality of struts and a plurality of bends, wherein the first modular segment has at least one welding zone comprising a rounded protrusion formed on at least one selected bend, the rounded protrusion including a disk shaped element having a circumferentially projecting peripheral flange extending about a periphery of the disk shaped element, the disk shaped element having a thickness approximately equal to a first thickness and the circumferentially projecting flange having a thickness that is less than the first thickness, and

wherein the second modular segment has at least one welding zone comprising tongs formed on at least one selected bend, the tongs comprising a socket element configured to accept the disk shaped element and overlie the flange of the rounded protrusion, the socket element having a thickness that is less than the first thickness, and

welding the at least one welding zone of the first modular segment to the at least one welding zone of the second modular segment to form at least one connector area where the first modular segment and the second modular inter-engage.

3. The method of claim 2, further comprising:

forming a welding zone at every third bend of the first modular segment and forming a welding zone at every third bend of the second modular segment; and

welding the welding zone at every third bend of the first modular segment to the welding zone at every third bend of the second modular segment to form a connector area where every third bend of each of the first modular segment and the second modular segment inter-engage.

4. The method of claim 2, wherein the first modular segment further comprises at least one welding zone comprising tongs formed on at least one selected bend, and

wherein the second modular segment further has at least one welding zone comprising a rounded protrusion formed on at least one selected bend.