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Surgical instrument to apply a hemostatic clip to a vessel and method of using the same

  • US 4,246,903 A
  • Filed: 04/02/1979
  • Issued: 01/27/1981
  • Est. Priority Date: 04/02/1979
  • Status: Expired due to Term
First Claim
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1. A surgical instrument to apply a single hemostatic clip to a vessel comprising:

  • a housing having a barrel and a handle;

    jaws attached to the distal end of said barrel containing means to receive and maintain a hemostatic clip;

    jaw cams attached to the proximal end of said jaws;

    spring means to hold said jaws in separation;

    a jaw wedge mounted adjacent to one side of said barrel, the distal end of said wedge having a rounded leading member and a slot, and the proximal end of said wedge adjacent to the proximal end of said barrel;

    a feed bar mounted adjacent to the opposite side of said barrel, the distal end of said bar having feed pawls and tabs, and the proximal end of said bar adjacent to the proximal end of said barrel;

    a tape guide attached to said barrel between said wedge and said bar, each side containing longitudinal recess, the distal end of said guide adjacent to said jaws and the proximal end adjacent to the proximal end of said barrel;

    a freely turning roller attached to the distal end of said guide;

    a magazine tape integrally contained in the said tape guide longitudinal recess adjacent said jaw wedge, the initial end of said tape wrapped around said roller and contained by said feed pawls in said tape guide longitudinal recess adjacent said feed bar, said tape containing a plurality of hemostatic clips;

    an end cover adjacent to the distal end of said guide, containing a J-shaped leading member which protrudes over said roller, and a guiderail adjacent to the distal end of said feed bar;

    a trigger pivotally mounted to said handle;

    spring means to hold said trigger in separation from said handle;

    whereby on completely squeezing said trigger, said rounded jaw wedge leading member advances into said jaw cams, said jaws are joined and said clip is compressed;

    and on releasing said trigger, said jaws are open and then said jaw wedge slot coordinates with said feed bar tab to advance said tape one pitch so that the next clip in said tape is delivered to said jaws.

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