Surgical instrument with laser target

Details Surgical instrument with laser target Surgical instrument with laser target

A - Human Necessities

61

F

A61F 9/007 (2006.01) A61B 18/20 (2006.01) A61B 18/26 (2006.01) A61F 9/011 (2006.01) A61M 1/00 (2006.01)

Patent

CA 2297733

A surgical needle with an open distal port at which tissue to be fractured is positioned contains an optical fiber for providing pulses of laser energy and titanium target that receives these pulses. The target converts the energy in the electromagnetic pulses to shockwaves that impinge on the tissue at the port causing the tissue to fracture. The target has one or more steps such that vaporization of the target by the laser pulses leaves a surface which directly faces the port so that the continued conversion of laser energy to mechanical shockwaves will provide shockwaves that are not blocked in traveling to the port at which the tissue is located.

La présente invention a trait à une aiguille chirurgicale qui possède un orifice distal ouvert, dans lequel est posé le tissu à fracturer, et contient une fibre optique pour fournir des impulsions d'énergie laser ainsi qu'une cible en titane destinée à recevoir ces impulsions. La cible convertit l'énergie des impulsions électromagnétiques en ondes de choc qui heurtent le tissu dans l'orifice et fracturent le tissu. Comme la cible possède une ou plusieurs marches, la vaporisation de la cible par les impulsions laser laissent une surface directement opposée à l'orifice; de cette manière, la conversion continue de l'énergie laser en ondes de choc mécaniques fournit des ondes de choc qui ne sont pas bloquées dans leur course vers l'orifice dans lequel est disposé le tissu.

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