Apparatus and methods for deployment of multiple custom-length prostheses

• US 8,157,851 B2
• Filed: 06/08/2005
• Issued: 04/17/2012
• Est. Priority Date: 06/08/2005
• Status: Active Grant

• Current Assignee: JW Medical Systems Ltd
• Original Assignee: XTENT, Inc.
• Inventors: Andreas, Bernard H.
• Primary Examiner(s): Nguyen, Tuan
• Assistant Examiner(s): MCEVOY, THOMAS M
• Application Number:
  US11/148,545
• Publication Number:
  US 20060282147A1
• Time in Patent Office: 2,505 Days
• Field of Search: 623/1.11, 623/1.12, 606/108, 604/93.01, 604/250, 604/43
• US Class Current: 623/1.11
• CPC Class Codes: A61B 2017/00309 Cut-outs or slits
• 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 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/826 more than one stent being applied sequentially
• 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 2002/9583 Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• 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 2220/005 using adhesives
• CPC Class Codes: A61F 2250/0007 for adjusting length
• CPC Class Codes: A61F 2250/0032 differing in radiographic density
• CPC Class Codes: A61F 2250/007 O-rings
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers

Abstract

Apparatus for delivering stents to body lumens include one or more tubular prostheses carried at the distal end of a catheter shaft, a sheath slidably disposed over the prostheses, and a guidewire tube extending from within the sheath to the exterior of the sheath through an exit port in a sidewall thereof. A guidewire extends slidably through the guidewire tube. The sheath can be moved relative to the catheter shaft and the guidewire tube to expose the prostheses for deployment. Methods of delivering stents are also provided.

Claims

1. Apparatus for performing an interventional procedure, comprising:

a flexible catheter shaft having proximal and distal ends;

a guidewire extending through a lumen in the distal end of said catheter shaft; and

a sealing member having a first passage adapted to slidably receive the catheter shaft entirely through the sealing member in a fluid-tight sealed manner, and a second passage adapted to slidably receive the guidewire entirely through the sealing member in a fluid-tight sealed manner, the first and second passages being separate and spaced apart entirely through the sealing member, the sealing member being non-separable and comprised at least in part of a compliant elastomeric material forming the first and second passages which each maintain through-hole openings sized to receive the respective catheter shaft and guidewire,

wherein the sealing member is adapted to be retained temporarily in a stationary position while the catheter shaft and guidewire remain freely slidable relative to the sealing member through each respective passage while remaining in sealing engagement therewith.

2. The apparatus of claim 1, further comprising a hemostatic valve adapted to receive and seal the sealing member.

3. The apparatus of claim 1, wherein said sealing member further comprises:

an elongated slider tube;

a slider body having a first recess at a first end and a second recess at a second end, said first recess adapted to fixedly engage an end portion of the slider tube;

a slider seal adapted to be received and retained within the second recess of said slider body, said slider seal having a first through-hole adapted to slidably receive the catheter shaft in a substantially fluidly sealed manner, and a second through-hole adapted to slidably receive the guidewire in a substantially fluidly sealed manner; and

a slider cap adapted to fixedly engage the second recess of the slider body such that said slider seal is retained within said second recess.

4. The apparatus of claim 3, wherein said slider tube includes a first through-hole adapted to slidably receive the catheter shaft and a second through-hole adapted to slidably receive the guidewire.

5. The apparatus of claim 3, wherein said slider body includes a first through-hole adapted to slidably receive the catheter shaft and a second through-hole adapted to slidably receive the guidewire.

6. The apparatus of claim 3, wherein said slider seal comprises a silicone compound.

7. The apparatus of claim 1, wherein at least a portion of the sealing member comprises a substantially incompressible material.

8. The apparatus of claim 2, wherein the hemostatic valve is sealed against an external surface of the sealing member.

9. The apparatus of claim 1, further comprising:

a tubular prosthesis releasably carried near the distal end of the catheter shaft, the tubular prosthesis being expandable to a shape suitable for engaging a target vessel;

a sheath disposed over the catheter shaft and the tubular prosthesis and being axially movable relative thereto, the sheath having proximal and distal ends and an exit port between the proximal and distal ends; and

a guidewire tube extending through the exit port and having a distal extremity disposed within the sheath and a proximal extremity disposed outside of the sheath, the guidewire tube being adapted for slidably receiving the guidewire therethrough.