Surgery – Instruments
Patent
1999-05-06
2000-05-30
Dvorak, Linda C. M.
Surgery
Instruments
600104, 600101, 600130, 600143, A61B 100, A61B 1700
Patent
active
060686243
ABSTRACT:
A stemmed endoscopic instrument has a distal operational tool, a proximal drive unit and a stem containing a force transmitting element extending through and displaceably received in the stem. A distal end of the force transmitting element acts on the operational tool and a proximal end engages the drive unit so that the force transmitting element drives the operational tool when the drive unit is actuated. An overload protection device limiting the traction force transmissible from the drive unit to the tool has a coupling with two mutually detachably connected coupling elements, the coupling being adjusted so that when a defined tension or force threshold is exceeded, the coupling elements separate from each other and force transmission is interrupted. The overload protection device has two coupling elements (18, 19; 20, 200/290, 280; 300) movable into a mutually geometrically locked position, at least one of the coupling elements being elastically deformable to release, by being reversibly deformed, the other element when the threshold force is exceeded.
REFERENCES:
patent: 5299559 (1994-04-01), Bruce et al.
patent: 5349942 (1994-09-01), Heimberger
patent: 5643248 (1997-07-01), Yoon
Benecke Rainer
Moeller Manfred
Dvorak Linda C. M.
Olympus Winter & Ibe GmbH
Ram Jocelyn Debra
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