Tissue shredding device and tissue shredding method
AssigneeOlympus Medical Systems Corp.
InventorsNobuko Kondoh, Kiyotaka Matsuno
Life of this patent
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Abstract
A tissue shredding device is provided which includes a shredding pipe which is inserted into a patient body in which a plurality of opening portions is formed in a longitudinal direction; and a plurality of wires which is withdrawn from the opening portion, bent back outside the shredding pipe, and drawn into the shredding pipe. Here, the tissue shredding device may be changed to one of a first arrangement in which the wires are withdrawn from the shredding pipe so that a tissue can be introduced toward top portions corresponding to bent-back parts of the plurality of wires, a second arrangement in which the top portions are arranged opposite to the shredding pipe, and a third arrangement in which the wires are drawn into the opening portion.
Claims20
A tissue cutting device comprising:
- a shredding pipe in which a plurality of opening portions is formed in a longitudinal direction of the shredding pipe;
- a plurality of wires which form a plurality of loop portions, respectively, each of the plurality of loop portions being extended from a corresponding one of the plurality of opening portions;
- and
- an operating section which gives a drawing force to the elongated member, the drawing force applying a reverse-direction tensile force on a tissue which is housed inside a space defined by the plurality of loop portions and comes into contact with at least two adjacent loop portions of the plurality of loop portions so that pulling directions of the at least two adjacent loop portions are opposite to each other.
Dependencies are inferred from the claim text.