Surgery – Diagnostic testing – Sampling nonliquid body material
Reexamination Certificate
2005-07-05
2005-07-05
Winakur, Eric F. (Department: 3736)
Surgery
Diagnostic testing
Sampling nonliquid body material
C606S039000, C606S048000
Reexamination Certificate
active
06913579
ABSTRACT:
An electrosurgical working end and method for obtaining a tissue sample for biopsy purposes, for example, from a patient's lung or a liver. The working end provides curved jaw members that are positioned on opposing sides of the targeted anatomic structure. The working end carries a slidable extension member that is laterally flexible with inner surfaced that slide over the jaw members to clamp tissue therebetween. As the extension member advances, the jaws compress the tissue just ahead of the advancing extension member to allow the laterally-outward portion of the extension member to ramp over the tissue while a cutting element contemporaneously cuts the tissue. By this means, the transected tissue margin is captured under high compression. The working end carries a bi-polar electrode arrangement that engages the just-transected medial tissue layers as well as surface layers to provides Rf current flow for tissue welding purposes that is described as a medial-to-surface bi-polar approach.
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Perkins Rodney
Shadduck John H.
Truckai Csaba
SurgRx Inc.
Townsend & Townsend & Crew LLP
Winakur Eric F.
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