Bibliographic Details
| Title: |
Endovascular delivery system |
| Patent Number: |
6,143,014 |
| Publication Date: |
November 07, 2000 |
| Appl. No: |
09/364,430 |
| Application Filed: |
July 30, 1999 |
| Abstract: |
A system for delivering and implanting a radially expandable endoluminal prosthesis within a body lumen (e.g., blood vessel). The system comprises a) an introducer/dilator assembly, and b) a delivery catheter/loader assembly. The introducer/dilator assembly comprises an elongate tubular introducer sheath which may be provided with a valving assembly mounted on the proximal end thereof. Such valving assembly may incorporate i) a hemostatic valve, ii) a first sealing valve and iii) a second sealing valve, positioned in series, to prevent leakage of body fluid out of the proximal end of the introducer and to permit two or more elongate members (e.g., catheters, guidewires) having differing outer diameters to be inserted through the introducer without leakage of body fluid therefrom. A dilator, which has regionalized differences in stiffness, is initially deployable within the lumen of the introducer to facilitate advancement of the introducer to its desired location within the body. Thereafter, the dilator may be removed from the introducer sheath and the delivery catheter/loader assembly may be attached to the introducer, such that the delivery catheter having the prosthesis mounted thereon may advanced through the introducer, to a desired location within the body. Thereafter, the radial expandable endoluminal prosthesis mounted on the delivery catheter is deployed and implanted by an expansion device (e.g., balloon) formed on the delivery catheter. The delivery catheter may incorporate one or more outflow apertures at specific location(s) to facilitate injection of radiographic contrast medium in a manner which will check for leakage around the endoluminal prosthesis, after the endoluminal prosthesis has been radially expanded and implanted. |
| Inventors: |
Dehdashtian, Mark (Costa Mesa, CA); Yu, Weiyun (Five Dock, AUX); White, Geoffrey H. (East Balmain, AUX); Saravia, Maria Lilian (Garden Grove, CA) |
| Assignees: |
Baxter International, Inc. (Deerfield, IL) |
| Claim: |
What is claimed is |
| Claim: |
1. A delivery catheter for implanting a tubular endoluminal prosthesis within a body lumen of a mammal, said delivery catheter comprising |
| Claim: |
a) an elongate, pliable catheter body having a longitudinal axis projectable therethrough, a proximal end and a distal end; |
| Claim: |
b) an annular balloon for radially expanding said endoluminal prosthesis, said balloon having, in its de-pressurized state |
| Claim: |
i) a substantially cylindrical sidewall which is disposed coaxially about the longitudinal axis of said catheter body, said sidewall having a proximal end and a distal end; |
| Claim: |
ii) a proximal end wall which extends from the proximal end of said cylindrical sidewall to the catheter body; and |
| Claim: |
iii) a distal end wall which extends from the distal end of said cylindrical sidewall to the catheter body; |
| Claim: |
iv) said proximal end wall and said distal end wall being disposed at angles which are no more than ten degrees from an axis which is perpendicular to the longitudinal axis of the catheter body. |
| Claim: |
2. A delivery catheter for implanting a tubular endoluminal prosthesis within a body lumen of a mammal, said delivery catheter comprising |
| Claim: |
b) an annular balloon for radially expanding said endoluminal prosthesis, said balloon having, in its inflated state |
| Claim: |
ii) a proximal end wall extending proximally from said proximal end of said cylindrical sidewall; |
| Claim: |
iii) a proximal balloon end extending proximally from said proximal end wall and attaching to said catheter body; |
| Claim: |
iv) a distal end wall extending distally from said distal end of said cylindrical sidewall; and |
| Claim: |
v) a distal balloon end extending distally from said distal end wall and attaching to said catheter body; |
| Claim: |
vi) said proximal end wall being disposed from the proximal end of said sidewall at an angle which is no more than ten degrees from an axis which is perpendicular to the longitudinal axis of the catheter body and said proximal end wall being disposed from where said proximal balloon end attaches to said catheter body at an angle which is no more than ten degrees from an axis which is perpendicular to the longitudinal axis of the catheter body; |
| Claim: |
vii) said distal end wall being disposed from the distal end of said sidewall at an angle which is no more than ten degrees from an axis which is perpendicular to the longitudinal axis of the catheter body and said distal end wall being disposed from where said distal balloon end attaches to said catheter body at an angle which is no more than ten degrees from an axis which is perpendicular to the longitudinal axis of the catheter body. |
| Current U.S. Class: |
606/192; 606/194; 604/96 |
| Current International Class: |
A61M 2900 |
| Patent References Cited: |
5968068 October 1999 Dehdashtian et al. |
| Primary Examiner: |
Buiz, Michael |
| Assistant Examiner: |
Woo, Julian W. |
| Attorney, Agent or Firm: |
Baxter Healthcare Corp. |
| Accession Number: |
edspgr.06143014 |
| Database: |
USPTO Patent Grants |
