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US 2003/0191465 A1Published application
Electrosurgicalscissors for endoscopic mucosal resection
AssigneePENTAX Corporation
InventorsNaohisa Yahagi, Satoshi Kidooka
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AssigneePENTAX Corporation
InventorsNaohisa Yahagi, Satoshi Kidooka
Estimating the term…
An electrosurgicalscissors for an endoscopic mucosal resection includes an flexible inserting portion that is to be inserted into a body cavity through an endoscope and first and second electrodes mounted to the distal end of the inserting portion so as to be movable between an open position and a closed position. The first and second electrodes are connected with conductive wires to be provided with high frequency voltage. Each of said first and second electrodes as a contact surface formed in a substantially straight shape. The first and second electrodes come into contact with each other at the contact surfaces when moved to the closed position and the contact surfaces are spaced apart from each other when the first and second electrodes are moved to the open position.
An electrosurgicalscissors for an endoscopic mucosal resection, comprising:
Dependencies are inferred from the claim text.
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No related US applications are recorded in the indexed filing history.
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Probes or electrodes therefor: probes having pivoting end effectors, e.g. forceps
Probes or electrodes therefor: having a flexible, catheter-like structure, e.g. for heart ablation
Probes having pivoting end effectors, e.g. forceps: scissors
Medical diagnosis and surgery
Term end not estimated
The present invention relates to an electrosurgicalscissors for an endoscopic mucosal resection that utilizes high frequency electric current.
The endoscopic mucosal resection is often performed instead of an abdominal operation for removing a lesion within a human cavity such as an early gastric cancer.
If the lesion to be removed is relatively small or is forming a polyp, a snare, which is a looped wire electrode, is inserted into the human cavity through an endoscope for carrying out the endoscopic mucosal resection
FIG. 1 schematically shows an electrosurgicalscissors according to a first embodiment of the invention connected to a high frequency power supply;
FIGS. 2A and 2B show partially sectional side views of the distal end portion of the electrosurgicalscissors shown in FIG. 1;
FIG. 2C is a sectional view of the electrosurgicalscissors shown in FIG. 2A observed from the direction indicated by the arrow A in FIG. 2A;
Hereinafter, an embodiment of the invention will be described with reference to the accompanying drawings.
FIG. 1 schematically shows an electrosurgicalscissors 100 according to a first embodiment of the invention connected to a high frequency power supply 200.
The electrosurgicalscissors 100 includes an operation portion 102 and an inserting portion 104 connected to the distal end of the operation portion 102.