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AssigneeRaychem Corporation
InventorsLee M. Middleman, Walter R. Pyka, Michael Buhler, Philippe Poncet, Karl Van Dyk, James E. Jervis, Reza Zadno
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The present invention provides a device or apparatus for manipulating matter in a confined or inaccessible space, comprising manipulator means at least partly constructed of one or more bent or twisted elongate metallic members having pseudoelasticity at the intended manipulation temperature, and a hollow housing (preferably of elongate tubular form) or cannula capable of holding at least the metallic member(s) in a relatively straightened state, and actuating means for extending the metallic member(s) from the housing to manipulate matter within the said space and for withdrawing the metallic member(s) into the housing, the arrangement being such that the metallic member(s) bend(s) or twist(s) pseudoelastically in a lateral or helical sense to manipulate the matter on extending from the housing at the said manipulation temperature, and become(s) relatively straightened on withdrawal into the housing at the said temperature. Preferably the invention provides such a device or apparatus which is of elongate form for surgical manipulation of matter within a living body, and which has the manipulator means at its distal end with the metallic member(s) having pseudoelasticity at the temperature to be encountered within that body, and wherein the actuating means is operable from the proximal end of the device.
A surgical instrument apparatus comprising a ring clip elastic member which, i) has a piercing end portion and a non-piercing end portion and a transverse wire dimension, ii) has a first shape when not subject to mechanical stress, iii) has a second shape when subject to mechanical stress, and iv) returns toward said first shape upon at least partial relief of said mechanical stress;
Dependencies are inferred from the claim text.