Abstract: A method of endovenous laser treatment in disclosed. An introducer sheath 40 is introduced into a vein and an optical fiber 12 is introduced through the introducer sheath until a first marking 45 on the optical fiber 12 indicates that the distal end of the optical fiber 12 is substantially in alignment with the distal end of the introducer sheath 40. The introducer sheath 40 is then withdrawn relative to the optical fiber 12 until a second marking 46 on the optical fiber 12 indicates that the distal end of the optical fiber 12 extends a predetermined distance beyond the distal end of said introducer sheath 40. Laser radiation is passed down the optical fiber 12 so that laser radiation is delivered to the inner wall of the vein and the introducer sheath 40 together with the optical fiber 12 are withdrawn a certain distance along the vein.

Abstract: A medical laser device is disclosed comprising an optical fiber 12 having markings 45, 46 which enable the optical fiber 12 to be accurately positioned relative to an introducer sheath 40. The introducer sheath 40 may also have graduated markings to enable the sheath 40 to be withdrawn at a controlled rate. A pulsed or continuous laser source may be provided.

Abstract: A method of endovenous laser treatment is disclosed. An introducer sheath 40 is introduced into a vein and an optical fibre 12 is introduced through the introducer sheath until a first marking 45 on the optical fibre 12 indicates that the distal end of the optical fibre 12 is substantially in alignment with the distal end of the introducer sheath 40. The introducer sheath 40 is then withdrawn relative to the optical fibre 12 until a second marking 46 on the optical fibre 12 indicates that the distal end of the optical fibre 12 extends a predetermined distance beyond the distal end of said introducer sheath 40. Laser radiation is passed down the optical fibre 12 so that laser radiation is delivered to the inner wall of the vein and the introducer sheath 40 together with the optical fibre 12 are withdrawn a certain distance along the vein.

Abstract: A medical laser device is disclosed comprising an optical fibre 12 having markings 45,46 which enable the optical fibre 12 to be accurately positioned relative to an introducer sheath 40. The introducer sheath 40 may also have graduated markings to enable the sheath 40 to be withdrawn at a controlled rate. A pulsed or continuous laser source may be provided.