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TRANSLATABLE OUTER TUBE FOR SEALING USING SHIELDED LAP CHOLE DISSECTOR
TRANSLATABLE OUTER TUBE FOR SEALING USING SHIELDED LAP CHOLE DISSECTOR
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机译:可屏蔽的外管,用于使用带屏蔽的搭扣孔解剖器进行密封
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摘要
Aspects of the present disclosure are presented for a surgical instrument for cutting and sealing tissue. In some embodiments, the surgical instrument includes a handle assembly, a shaft, and an end effector. The end effector may include: a blade that vibrates at an ultrasonic frequency, a shielded portion enclosing a back edge of the blade, a high-friction surface coupled to the shielded portion and positioned between the shielded portion and the back edge of the blade. A space is defined between the high-friction surface and the back edge of the blade when the end effector is in a cutting configuration. In a sealing configuration, the high-friction surface contacts the back edge of the blade, which generates heat based on ultrasonic vibrations of the blade rubbing against the high-friction surface. The shielded portion can coagulate bleeding tissue based on heat transfer from the high-friction surface to the shielded portion.
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