Endoscope for removal of tissue
OwnerHans E. Sachse, Rainer Sachseinventors
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Abstract
An endoscope which contains, in a housing, in parallel relationship, a light guide, at least one flushing duct, and a continuously driven shaft which carries at its end, protruding in operation from the tip of the endoscope, a cutting instrument having a plurality of cutting blades. This design makes it possible to remove pieces of tissue, for example, for laboratory tests in a more intact way than was possible with the endoscope according to the parent U.S. Pat. No. 4,756,309. The endoscope disclosed herein lends itself to a wide variety of medical fields.
Claims21
An endoscope having a front or tip end and a rear end, and comprising a tubular housing, a lens system with a light guide extending longitudinally in said housing and having its viewing aperture at the rear end of the endoscope, a continuously driven shaft also extending longitudinally in said housing in parallel relationship to said light guide and comprising at its front end, protruding in operation from the tip of the endoscope a rotating working head, and at least one flushing duct, and means for introducing flushing liquid into said flushing duct,
- wherein there are provided means for applying to said shaft independent axial and rotary movements, and
- wherein said working head is a cutting instrument having a plurality of cutting blades with cutting edges.
Dependencies are inferred from the claim text.