VALVULOTOME GUIDED BY A GUIDE WIRE/CATHETER

• US 20130116500A1
• Filed: 03/01/2011
• Published: 05/09/2013
• Est. Priority Date: 03/01/2010
• Status: Active Grant

• Current Assignee: Andramed GmbH
• Original Assignee: Andramed GmbH
• Inventors: Schade, Heinz, Kohl, Gunter, Tenholt, Matthias, Kennel, Stefan
• Granted Patent: US 9,387,064 B2
• Time in Patent Office: Days
• US Class Current: 600/36
• CPC Class Codes: A61B 17/22 Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for dilators A61M29/00
• CPC Class Codes: A61B 17/320725 with radially expandable cutting or abrading elements A61B17/32075 takes precedence
• CPC Class Codes: A61B 17/32075 Pullback cutting; combined forward and pullback cutting, e.g. with cutters at both sides of the plaque
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22097 Valve removal in veins
• CPC Class Codes: A61F 2/062 Apparatus for the production of blood vessels made from natural tissue or with layers of living cells prostheses made from natural tissue or living cells A61L27/507

Abstract

The invention relates to a valvulotome (1) guided by guidewire/catheter comprising

• • a guidewire (2),
  • a first inner tube (3) accommodating the guidewire (2),
  • an expandable basket (5) with cutting elements (7), with said basket (5) being the distal end of a second tube (4) through which the first inner tube (3) extends,
  • a catheter tube (8) through which the second inner tube (4) extends, said catheter tube being suited to accommodate and guide the expandable basket (5) in non-expanded state,
  • a sleeve (6) that forms the distal end of the first tube (3) and functions as limiting element for the distal end of the basket (5) and through which the guidewire (2) has been passed.

Claims

1. Valvulotom (1) guided by guidewire/catheter comprising

a guidewire (2),

a first inner tube (3) accommodating the guidewire (2),

an expandable basket (5) with cutting elements (7), with said basket (5) being the distal end of a second tube (4) through which the first inner tube (3) extends,

a catheter tube (8) through which the second inner tube (4) extends, said catheter tube being suited to accommodate and guide the expandable basket (5) in non-expanded state,

a sleeve (6) that forms the distal end of the first tube (3) and functions as limiting element for the distal end of the basket (5) and through which the guidewire (2) has been passed.

2. Valvulotome according to claim 1, characterized in that the basket (5) has been provided with several braces (5a, 5b, 5c), said braces carrying the cutting elements (7).

3. Valvulotome according to claim 2, characterized in that the basket (5) has been provided with three braces (5a, 5b, 5c).

4. Valvulotome according to claim 2, characterized in that the braces (5a, 5b, 5c) are brought together distally in sleeve (6).

5. Valvulotome according to claim 2, characterized in that the cutting elements (7) are provided with hook-shaped cutters (9) pointing to the proximal side and extending along the plane of the braces (5a, 5b, 5c).

6. Valvulotome according to claim 5, characterized in that the cutters (9) are arranged on the braces (5a, 5b, 5c) with offset portions (10a, 10b) adjacent to them.

7. Valvulotome according to claim 1, characterized in that the guidewire (2) is movably guided in respect of the inner tube (3).

8. Valvulotome according to claim 1, characterized in that the second tube (4) is movably guided in respect of the first inner tube (3).

9. Valvulotome according to claim 1, characterized in that the sleeve (6) is designed as atraumatic tip.

10. Valvulotome according to claim 1, characterized in that the basket (5) consists of a self-expanding material.

11. Valvulotome according to claim 9, characterized in that the self-expanding material is nitinol.

12. Valvulotome according to claim 1, characterized in that it has radiopaque marker elements arranged in the area of the sleeve (6) and/or the tip of catheter (8).

13. Valvulotome according to claim 12, characterized in that the sleeve (6) consists of radiopaque material.