Needle or catheter for the thermal coagulation of blood vessels

• US 20080215044A1
• Filed: 03/03/2008
• Published: 09/04/2008
• Est. Priority Date: 03/02/2007
• Status: Abandoned Application

• Current Assignee: F Care Systems Naamloze Vennootschap
• Original Assignee: F Care Systems Naamloze Vennootschap
• Inventors: Devers, Rudi
• Application Number:
  US12/073,187
• Publication Number:
  US 20080215044A1
• Time in Patent Office: Days
• US Class Current: 606/28
• CPC Class Codes: A61B 18/082 Probes or electrodes therefor

Abstract

Needle or catheter for thermally coagulating blood vessels, which mainly consists of an elongated body (2) with a proximal end (3) and a distal end (4), whereby a tip (6) in a conductive material is provided at the distal end (4), whereby a first conductor (7) which makes contact with the tip (6) extends between the distal end (4) and the proximal end (3), and whereby the outside of the elongated body (2) is provided over at least part of its length, but not at the tip (6), with an insulation (10), characterized in that the needle or the catheter (1) comprises a second conductor (8) which extends, isolated from the first conductor (7), as of the distal end (4) up to the proximal end (3) and which makes contact with the tip (6).

Claims

1. Needle or catheter for thermally coagulating blood vessels, comprising an elongated body with a proximal end and a distal end;

a tip in a conductive material provided at the distal end;

a first conductor which makes contact with the tip extends between the distal end and the proximal end; and

the outside of the elongated body is provided over at least part of its length, but not at the tip with an insulation;

wherein the needle or the catheter comprises a second conductor which extends, isolated from the first conductor from as the distal end up to the proximal end and which makes contact with the tip.

2. Needle or catheter according to claim 1, wherein the conductors are arranged to conduct radio-frequency waves and one of the conductors is connected to a generator of radio-frequency waves at its proximal end, and the other conductor is connected to a grounding at its proximal end.

3. Needle or catheter according to claim 1, wherein the second conductor is provided concentrically round the first conductor, and the first and second conductors are separated from one another by an insulating layer extending between both conductors and there is provided around the second conductor a second insulating layer.

4. Needle or catheter according to claim 1, wherein the first conductor forms a core of the elongated body.

5. Needle or catheter according to claim 1, wherein the conductors are made of nickel.

6. Needle or catheter according to claim 3, wherein at least the second insulating layer is made of Teflon or another insulating material.

7. Needle or catheter according to claim 1, wherein the proximal end of the elongated body is provided in a handle.

8. Needle or catheter according to claim 2 including means enabling activation and deactivation of the generator of radio-frequency waves.

9. Needle or catheter according to claim 8, said means comprising a foot pedal.

10. Needle or catheter according to claim 1, wherein the tip is sharp.