A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 17/32 (2006.01) A61B 17/04 (2006.01) A61B 17/28 (2006.01) A61B 17/30 (2006.01) B25B 7/12 (2006.01) B25B 7/14 (2006.01) A61B 17/11 (2006.01)
Patent
CA 2103507
A surgical instrument according to an embodiment of the present invention includes a housing portion and an endoscopic portion having a proximal end and a distal end, the endoscopic portion including a pair of coaxial membersattached at the proximal end to the housing portion. The endoscopic portion alsoincludes an inner rod member slidable within an outer tube member. The endoscopic portion terminates at the distal end in a pair of jaw members disposed in opposing relation and relatively pivotal about a common point between at least an open position and a closed position. A jaw control mechanism is associated with the housing portion, and includes at least one actuating member movably mounted in the housing portion. The actuation member has at least one gripping portion thereon such that an operator of the instrument can better manipulate the actuating member with a single hand. A linking member is pivotally connected to the actuating member and the inner rod member. A notch portion is disposed on the rod member such that when the actuating member is moved in relation to the housing portion in a first direction to a first position the engaging portion engages the notch, locking the jaws in a closed position. The surgical instrument also includes means for preventing the inner rod member from moving from the first position whereby coaxial reciprocating forces are created in the inner rod member when the locking means are moved to the first position.
Instrument chirurgical composé d'une portion boîtier et d'une portion endoscopique ayant une extrémité proximale et une extrémité distale. La portion endoscopique comprend deux membres coaxiaux fixés à l'extrémité proximale de la portion boîtier. Elle comprend aussi une tige interne coulissante placée à l'intérieur d'un tube, et se termine à l'extrémité distale par deux mâchoires opposées pivotant relativement autour d'un point commun situé entre au moins une position ouverte et une position fermée. Le mécanisme de commande des mâchoires, monté sur la portion boîtier, comprend au moins un membre de commande mobile monté dans le boîtier. Ce membre de commande est muni d'au moins une portion préhensive qui permet à l'opérateur de mieux manipuler l'instrument d'une seule main. Un membre de liaison est relié au membre de commande et à la tige interne de façon à pouvoir pivoter. La tige est munie d'une encoche qui fait en sorte que, lorsque le membre de commande est déplacé dans une première direction par rapport à la portion boîtier jusque dans une première position, la portion mobile s'y engage, verrouillant les mâchoires en position fermée. L'instrument chirurgical comprend également un dispositif qui empêche la tige interne de quitter sa position initiale, ce qui crée des forces alternatives coaxiales dans la tige interne lorsque le dispositif de verrouillage est déplacé vers la première position.
Bolanos Henry
Green David T.
Nicholas David A.
Rawson Paul O.
Tovey H. Jonathan
Mcfadden Fincham
United States Surgical Corporation
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