Stent set

• US 5,518,498 A
• Filed: 10/07/1993
• Issued: 05/21/1996
• Est. Priority Date: 10/09/1992
• Status: Expired due to Fees

• Current Assignee: Angiomed GmbH & Co. Medizintechnik KG
• Original Assignee: Angiomed AG (Becton, Dickinson & Co)
• Inventors: Lindenberg, Josef, Schnepp-Pesch, Wolfram
• Primary Examiner(s): Sykes, Angela D.
• Assistant Examiner(s): Lacyk, John P.
• Application Number:
  US08/132,929
• Time in Patent Office: 957 Days
• Field of Search: 128/DIG. 25, 600/29, 600/30, 606/191, 606/193, 606/194-199, 606/108, 604/104-105, 604/280-281
• US Class Current: 600/30
• CPC Class Codes: A61F 2/94 Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0076 ellipsoidal or ovoid
• CPC Class Codes: A61M 2025/0233 specifically adapted for attaching to a body wall by means which are on both sides of the wall, e.g. for attaching to an abdominal wall
• CPC Class Codes: A61M 25/04 in the body, e.g. expansible A61M25/10, A61M16/0488 take precedence
• CPC Class Codes: A61M 27/008 pre-shaped, for use in the urethral or ureteral tract
• CPC Class Codes: Y10S 128/25 Artificial sphincters and devices for controlling urinary incontinence

Abstract

A stent set for keeping a urethral stenoses open, particularly in the vesical neck, for bladder drainage with an intraurethral catheter having a largely cylindrical basic body, with small baskets or cages at respective ends of the basic end an intraurethral insertion rail and a slide. At a rounded tip with at least one initial opening is provided at a proximal end of the intraurethral catheter.

Claims

1. A stent set for keeping a urethral stenoses open in a region of a vesical neck for bladder drainage, the stent set comprising an intraurethral catheter having a substantially cylindrical main body with first and second baskets at respective opposite ends thereof, an entry urethral catheter insertion rail, and slide for pushing the intraurethral catheter out of the insertion rail, wherein the intraurethral terminates in a rounded tip at a proximal end thereof, at least one initial opening is formed at end face of said rounded tip, said insertion rail has an internal diameter for accommodating an external diameter of a guide part for the slide which can be located in said insertion rail, and wherein a diameter of the slide is greater than a diameter of the at least one initial opening.

2. A stent set according to claim 1, wherein the intraurethral catheter is provided with at least one further initial opening disposed at a lateral position of the proximal end.

3. A stent set according to claim 1, wherein the first basket is provided at the a proximal end of the intraurethral catheter at a position below the rounded tip, the second basket is provided at a distal end of the intraurethral catheter above a cylindrical end part thereof, and wherein a diameter of said first basket is larger than a diameter of said second basket.

4. A stent set according to claim 3, wherein said first and second baskets are constructed in one piece with the cylindrical end part, and wherein said cylindrical end part and said rounded tip of the intraurethral catheter are connected in one piece.

5. A stent set according to claim 1, wherein the intraurethral catheter has, on a cylindrical end part thereof remote from the rounded tip, an opening for receiving a thread.

6. A stent set according to claim 1, wherein the intraurethral catheter is provide with flat edges on an end face of a cylindrical end part thereof remote from said rounded tip.

7. A stent set according to claim 1, wherein the insertion rail is bent slightly with respect to a direction of the main body at a front end thereof.

8. A stent set according to claim 7, wherein a front end region of the insertion rail is bent by 10°

-50°

from the a direction of the main body of the insertion rail.

9. A stent set according to claim 7, wherein a front end region of the insertion rail forms an angle of between 130°

-170°

with respect to the main body.

10. A stent set according to claim 7, wherein a short curvature region is connected to the main body, and wherein the short curvature region is connected to said front end which is in the form of an extended short end region.

11. A stent set according to claim 10, wherein the short end region is cylindrical.

12. A stent set according to claim 1, wherein the slide includes two axially spaced marks respectively fashioned as indentation, and wherein the marks are provided with a different reflecting power as compared with a reflecting power of a remainder of the slide.

13. A stent set according to claim 1, wherein the slide is at least 11/2 time a length of the insertion rail.

14. A stent set according to claim 1, wherein the slide has a smaller external diameter than an internal diameter of the intraurethral catheter.

15. A stent set according to claim 1, wherein the slide has a smaller external diameter than an internal diameter of the guidepart.

16. A stent set according to claim 1, wherein the insertion rail is fashioned of a stiff material.

17. A stent set according to claim 1, wherein the intraurethral catheter is fashioned of a flexible material.

18. A stent set according to claim 1, wherein the slide is fashioned of a flexible axially stiff material.

19. A stent set according to claim 17, wherein the flexible material is one of polyethylene and polyurethane.

20. A stent set for keeping a urethral stenoses open in a region of a vesical neck for bladder drainage, the stent set comprising an intraurethral catheter having a substantially cylindrical main body with first and second baskets at respective opposite ends thereof, an intraurethral catheter insertion rail, and a slide for pushing the intraurethral catheter out of the insertion rail, wherein the intraurethral catheter terminates in a rounded tip at a proximal end thereof, at least one initial opening is formed at an end face of said rounded tip, and wherein the insertion rail has an internal diameter corresponding to an external diameter of a guide part for the slide.

21. A stent set for keeping a urethral stenoses open in a region of a vesical neck for bladder drainage the stent set comprising an intraurethral catheter having a substantially cylindrical main body with first and second baskets at respective opposite ends thereof, an intraurethral catheter insertion rail, and a slide for pushing the intraurethral catheter out of the insertion rail, wherein the intraurethral catheter terminates in a rounded tip at a proximal end thereof, at least one initial opening is formed at an end face of said rounded tip, and wherein the intraurethral catheter is introduced into the insertion rail such that a distal end of said catheter abuts against a proximal end of the insertion rail and the rounded tip projects from said proximal end of the insertion rail.

22. A stent set according to claim 21, wherein the intraurethral catheter has an external diameter corresponding to an internal diameter of the insertion rail.