Catheter with a vascular support

• US 5,405,380 A
• Filed: 07/27/1993
• Issued: 04/11/1995
• Est. Priority Date: 10/12/1992
• Status: Expired due to Term

• Current Assignee: Schneider (Europe) GmbH (Boston Scientific Corporation)
• Original Assignee: Schneider (Europe) GmbH (Boston Scientific Corporation)
• Inventors: Gianotti, Marc, Lehmann, Paul
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): BRITTINGHAM, DEBRA
• Application Number:
  US08/097,799
• Time in Patent Office: 623 Days
• Field of Search: 604/93, 604/95, 604/96, 604/104, 606/191-200, 623/1, 623/11, 623/12
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of 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 2230/0076 ellipsoidal or ovoid
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers

Abstract

A catheter with a radially self-expanding cylindrical vascular support made of a permeable mesh of crossed stiff fibers is disclosed. The catheter has a tubular outer catheter shaft and an inner catheter to which the vascular support is fixed. The tubular outer catheter shaft is axially movable with respect to the inner catheter.

Claims

1. A catheter comprising:

a tubular outer catheter having a proximal end and a distal end defining a first lumen with a distal opening;

an inner catheter having a proximal end and a distal end defining a second guidewire receiving lumen and coaxially disposed in the first lumen of the tubular outer catheter and axially movable with respect to the tubular outer catheter; and

a vascular support means formed from a radially expandable permeable mesh of braided fibers and having a proximal end and a distal end, and being fixedly connected to the inner catheter so as to form a proximal mesh cone at the proximal end of the vascular support means and a distal mesh cone, which constitutes a mirror image of the proximal mesh cone, at the distal end of the vascular support means;

wherein the inner catheter has a distal tapered tip with a proximal portion adapted to close and seal the distal opening of the outer catheter when the distal opening of the outer catheter is adjacent to the proximal portion of the tip.

2. The catheter of claim 1 wherein the proximal end of the vascular support means is fixedly connected to the distal end of the inner catheter and the distal end of the vascular support means is fixedly connected to the proximal portion of the tip.

3. The catheter of either claim 2 wherein the tip has a shoulder dimensioned to abut the distal end of the outer catheter.

4. The catheter of claim 3 wherein the tip is radiologically detectable.

5. The catheter of claim 4, wherein a radio-opaque ring is attached to the tip with the distal end of the vascular support means anchored to the radio-opaque ring.