Vessel sealing using microwave energy

摘要

An end effector assembly includes a pair of opposing jaw members movable from a first position in spaced relation relative to one another to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members includes a microwave antenna assembly and a shielding member including a metallic plate coupled to ground and a dielectric material. The end effector assembly also includes a splitter configured to receive an active signal from a source of microwave energy and split the active signal into a first signal transmitted to the microwave antenna assembly in one of the jaw members and a second signal transmitted in the microwave antenna assembly in the other jaw member.

主权项

1. An end effector assembly for a microwave forceps, comprising:
a pair of opposing jaw members, at least one jaw member is movable from a first position in spaced relation relative to the other jaw member to at least one subsequent position wherein the jaw members cooperate to grasp tissue therebetween, each of the jaw members including a microwave antenna assembly capable of generating an electromagnetic field and a shielding member including a metallic plate coupled to ground, a sealing surface, and a dielectric material, wherein the microwave antenna assembly is spaced apart from the sealing surface; and a splitter configured to receive an active signal from a source of microwave energy and split the active signal into a first signal transmitted to the microwave antenna assembly in one of the jaw members and a second signal transmitted in the microwave antenna assembly in the other jaw member.