Medical treatment device for holding, coagulating, and cutting living tissue

摘要

In order to reliably cut off a living tissue by using a microwave in a surgical operation without causing excessive damage to the living tissue or without bleeding, it is necessary to suppress energy attenuation until the microwave reaches electrode blades for nipping, coagulating, and cutting off a tissue. However, it is difficult to suppress the energy attenuation. The present invention relates to a medical treatment device capable of reliably cutting off a living tissue by using a microwave while sealing vasculature by coagulating the living tissue without excessively damaging the living tissue. Specifically, the present invention relates to a medical treatment device including a movable first electrode blade connected to an external conductor and a fixed second electrode blade connected directly to a central electrode. The medical treatment device has a function of holding a living tissue between the movable first electrode blade and the fixed second electrode blade, coagulating the living tissue by supplying a microwave from the fixed second electrode blade, and cutting off the living tissue by turning the movable first electrode blade. In the medical treatment device, a turning mechanism for the movable first electrode blade is arranged at a certain clearance from the central electrode.

主权项

1. A medical treatment device, comprising:
a coaxial cable for transmitting a microwave, wherein said coaxial cable comprises a central electrode and an external conductor; a fixed second electrode blade provided on a front side of a distal end of said coaxial cable and connected to said central electrode, wherein said fixed second electrode blade comprises an electrode open/close rod connecting point; a movable first electrode blade connected to said external conductor, wherein said movable first electrode blade comprises a turning shaft, and wherein said movable first electrode blade is configured to be turnable about said turning shaft and facing said fixed second electrode blade, and wherein manipulation of said movable first electrode blade is achieved at least in part by movement of said electrode open/close rod connecting point; and a coupling rod for coupling said turning shaft and said electrode open/close rod connecting point to each other;wherein said turning shaft of said movable first electrode blade is located on said movable first electrode blade side with respect to a center line of an edge line of said movable first electrode blade and an edge line of said fixed second electrode blade,and wherein said electrode open/close rod connecting point is set on said fixed second electrode blade side with respect to the center line of the edge line of said movable first electrode blade and the edge line of said fixed second electrode blade; and
wherein said medical treatment device is configured to:
hold a living tissue between said movable first electrode blade and said fixed second electrode blade;coagulate the living tissue by supplying a microwave; andcut off the living tissue by turning said movable first electrode blade.