Importance

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Abstract

A microsurgical clip for clamping of small blood vessels formed of a hollow shell having openings top and bottom with an integral duck bill extending forwardly from the lower edge of its front wall. A cooperating insert of inverted 'U' shape is nested in the housing to define a central pocket and terminates in a duck bill which cooperates with the duck bill of the shell. The shell and the insert have their back walls hinged together, and an expansible spring is seated in the pocket with one end coupled to the shell and the other end coupled to the insert for urging the insert upwardly into the shell to bias the duck bills together. The insert has a crown which projects upwardly through the opening at the top of the shell so that upon application of pinching pressure the insert is pressed downwardly with respect to the shell to compress the spring and to spread the duck bills for clamping engagement of a blood vessel therebetween. In one embodiment of the invention the spring is retained in the pocket by a trap door which encloses the bottom of the shell. The shell, insert and trap door are preferably molded of plastic integrally with one another.

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First Claim