Surgery – Instruments – Means for concretion removal
Reexamination Certificate
2006-05-30
2006-05-30
Lucchesi, Nicholas D. (Department: 3763)
Surgery
Instruments
Means for concretion removal
C606S114000, C606S108000
Reexamination Certificate
active
07052502
ABSTRACT:
The invention relates to a medical instrument for creating a cavity for an endoscopic intervention in a human or animal body, comprising a hollow cylindrical encasing trocar tube which can be inserted into an artificial body opening and an expander which can be extracted from and retracted into said tube. The above-mentioned medical instrument consists of a small number of parts and is easy to handle. It is characterized in that the expander comprises a retaining element which is arranged outside the trocar tube in addition to at least two spring blades which are made of a flexible material and form an arc in the respective median sections thereof, whereby the two ends thereof are respectively fixed to the retaining element, extending through the tube of the trocar. The invention also relates to a method for the use of said medical instrument.
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Lafond Christophe
Le Huec Jean Charles
Karl Storz GmbH & Co. KG
Lucchesi Nicholas D.
Maiorino Roz
St. Onge Steward Johnston & Reens LLC
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