Apparatus and methods for delivery of braided prostheses

• US 20050049673A1
• Filed: 10/14/2004
• Published: 03/03/2005
• Est. Priority Date: 12/03/2001
• Status: Active Grant

• Current Assignee: JW Medical Systems Ltd
• Original Assignee: XTENT, Inc.
• Inventors: French, Ron, Andreas, Bernard, Gifford, Hanson S. III, Deem, Mark E.
• Granted Patent: US 7,357,812 B2
• Time in Patent Office: Days
• US Class Current: 623/1.120
• CPC Class Codes: A61B 1/00151 using everted tubes
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: Y10S 623/903 Blood vessel

Abstract

Blood vessels and other body lumens are expanded using an evertible braided prosthesis. The braided prosthesis is delivered to the blood vessel in a radially collapsed configuration. A leading edge of the braided prosthesis is then everted so that it expands as it is advanced through the blood vessel. Optionally, the prosthesis can be provided with a biologically active substance in order to inhibit hyperplasia or have other desired biological effects.

Claims

1. A method for delivering a prosthesis to a body lumen, said method comprising:

positioning a metallic tubular prosthesis at a target site within the body lumen; and

everting the tubular prosthesis so that an inside surface is exposed radially outwardly and advanced over a length of a wall of the body lumen.

2. A method for delivering a stent to a blood vessel, said method comprising:

positioning the stent at a target site within the blood vessel; and

everting the stent so that an inside surface is exposed radially outwardly and advanced over a length of a wall of the blood vessel;

wherein the stent inhibits restenosis in the blood vessel.

3. A method for delivering a prosthesis to a body lumen, said method comprising:

positioning a tubular prosthesis at a target site within the body lumen, the tubular prosthesis having a total length;

everting the tubular prosthesis so that an inside surface is exposed radially outwardly and a desired length of the tubular prosthesis is advanced over a length of a wall of the body lumen, the desired length being less than the total length; and

severing a portion of the tubular prosthesis having the desired length to allow the portion to remain in the body lumen.

4. A method for delivering a prosthesis to a body lumen, said method comprising:

positioning a delivery catheter carrying a tubular prosthesis at a target site within the body lumen;

everting the tubular prosthesis so that an inside surface is exposed radially outwardly and advanced over a desired length of a wall of the body lumen; and

deploying a portion of the tubular prosthesis having the desired length, wherein a second length of the tubular prosthesis remains carried within the delivery catheter.

5. Apparatus for delivering a prosthesis to a body lumen, said apparatus comprising:

a catheter having a passage;

a metallic tubular prosthesis carried in the passage at least partially in a radially collapsed configuration; and

a slidable member in the catheter for advancing the prosthesis from the passage so that said prosthesis everts and radially expands as it is advanced.

6. The apparatus of claim 5, wherein the metallic tubular prosthesis is a shape memory metal.

7. The apparatus of claim 5, wherein the metallic tubular prosthesis comprises a braided metal structure.

8. The apparatus of claim 5, wherein the metallic tubular prosthesis comprises an open lattice structure.

9. Apparatus for delivering a prosthesis to a blood vessel, said apparatus comprising:

a catheter having a passage;

a stent carried in the passage at least partially in a radially collapsed configuration; and

a slidable member in the catheter for advancing the prosthesis from the passage so that said prosthesis everts and radially expands as it is advanced;

wherein the stent is configured to inhibit restenosis in the blood vessel.

10. Apparatus for delivering a prosthesis to a body lumen, said apparatus comprising:

a catheter having a passage;

a tubular prosthesis carried in the passage at least partially in a radially collapsed configuration;

a slidable member in the catheter for advancing the prosthesis from the passage so that said prosthesis everts and radially expands as it is advanced; and

a severing member in the catheter for severing a portion of the prosthesis to allow the portion to remain in the body lumen while a second portion of the prosthesis remains carried in the catheter.