Extendible stent apparatus

• US 7,678,142 B2
• Filed: 08/04/2004
• Issued: 03/16/2010
• Est. Priority Date: 11/04/1996
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Elam, Eric, Lin, Stuart, Vardi, Gil M., Davidson, Charles J.
• Primary Examiner(s): SWEET, THOMAS
• Application Number:
  US10/910,598
• Publication Number:
  US 20050010278A1
• Time in Patent Office: 2,050 Days
• Field of Search: 623/1.35
• US Class Current: 623/1.35
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/852 Two or more distinct overlapping stents
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• 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 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/067 modular
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91516 the meander having a change in frequency 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 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/9155 Adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2002/91583 by a bridge, whereby at least one of its ends is connected along the length of a strut between two consecutive apices within a band
• CPC Class Codes: A61F 2250/006 modular
• CPC Class Codes: A61F 2250/0098 : radio-opaque, e.g. radio-opaque markers

Abstract

The bifurcating double stent apparatus (10) of the present invention comprises a generally cylindrical main stent (12), a generally cylindrical branch stent (15), which are shown as fully dilated in a subject main vessel (8), and a subject branch vessel (7). The main stent (12) is deployed prior to the branch stent (15) which is then aligned with the side opening (16) of the main stent (12), and attached at that location.

Claims

1. A stent for placement in a bifurcated body lumen, said stent comprising:

a main tubular body comprised of serpentine rings of joined struts and hinges, the body having a first end, a second end, and a side opening between said ends, wherein the struts and hinges of the serpentine rings of a first portion of the main tubular body between the first end and the side hole define a repeating geometric pattern, the struts and hinges of the serpentine rings of a second portion of the main tubular body between the side hole and the second end define a repeating geometric pattern, the repeating geometric pattern of the first portion being different than the repeating geometric pattern of the second portion,

wherein the first portion is expanded by a first radially outward pressure in the range from 1 atmospheres to 10 atmospheres and the second portion is expanded by a second radially outward pressure in the range from 2 atmospheres to 18 atmospheres.

3. A stent as in claim 1, wherein the struts of the serpentine rings of the first portion have a first strut length and the struts of the serpentine rings of the second portion have a second strut length, wherein the first strut length is greater than the second strut length.

2. A stent for placement in a bifurcated body lumen, said stent comprising:

a main tubular body comprised of serpentine rings of joined struts and hinges, the body having a first end, a second end, and a side opening between said ends, wherein the struts and hinges of the serpentine rings of a first portion of the main tubular body between the first end and the side hole define a repeating geometric pattern, the struts and hinges of the serpentine rings of a second portion of the main tubular body between the side hole and the second end define a repeating geometric pattern, the repeating geometric pattern of the first portion being different than the repeating geometric pattern of the second portion,

wherein the first portion has a first axial spine and the second portion has a second axial spine, wherein the first axial spine opens circumferentially to a first force and the second axial spine opens circumferentially in response to a second force, wherein the first force is less than the second force.

4. A stent as in claim 2, wherein the repeating geometric pattern of the first portion is interrupted by the first axial spine, and the repeating geometric pattern of the second portion is interrupted by the second axial spine.

5. A stent for placement in a bifurcated body lumen, said stent comprising:

a main tubular body comprised of serpentine rings of joined struts and hinges, the body having a first end, a second end, and a side opening between said ends, wherein the struts and hinges of the serpentine rings of a first portion of the main tubular body between the first end and the side hole define a repeating geometric pattern, the struts and hinges of the serpentine rings of a second portion of the main tubular body between the side hole and the second end define a repeating geometric pattern, the repeating geometric pattern of the first portion being different than the repeating geometric pattern of the second portion,

wherein the main tubular body comprises a circumferential envelope and further comprises a plurality of laterally deployable elements, the laterally deployable elements engaged to the main tubular body immediately adjacent the side opening, in a reduced diameter configuration the laterally deployable elements positioned within the circumferential envelope, in a greater diameter configuration at least a portion of each of the laterally deployable elements extending out of the circumferential envelope.

6. A stent as in claim 5 wherein the side hole is defined by a continuous serpentine band.

7. A stent as in claim 6 wherein each of the laterally deployable elements are loops of the continuous serpentine band.