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Tip configuration for a ligating clip applier

  • US 4,480,641 A
  • Filed: 02/05/1982
  • Issued: 11/06/1984
  • Est. Priority Date: 02/05/1982
  • Status: Expired due to Term
First Claim
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1. Jaw tips for a medical instrument for applying ligating clips comprising:

  • a right and left jaw disposed in confronting relationship and adapted to move together to close a clip about a vessel to be ligated, each of said jaws including;

    a generally U-shaped channel having a first and second side wall and a base, the base of each jaw tapering toward the other as one advances in a direction toward the jaw tips from the body of said instrument when said jaws are in the fully opened position to partially close a clip as it is delivered to the jaw tips to assist in maintaining the clip within said U-shaped channels;

    the distal end of each jaw tip including a recess for receiving a projecting portion of said clip and for retaining said clip projection therein during closing, thereby preventing said clip from receding into said U-shaped channels as it is closed about a vessel;

    said recess including a first portion which undercuts the base of each said U-shaped channel, the base and the edge of the recess forming an acute angle to provide a stop for preventing the clip from receding from the jaws while it is being closed about a vessel to be ligated, the bottom of said recess extending longitudinally of its jaw a distance greater than the projecting portion of said clip to facilitate the entry of the projecting portion on said clip into said recess;

    each said jaw tip further includes a planar exit portion stepped down below the plane of said U-shaped channel bases and extending from the distal end of each said recess to the distal end of each said jaw tip;

    the inwardly facing, upper portion of each side wall of each said U-shaped channel includes a convex, curved portion extending longitudinally along said U-shaped channel from a point rearward of said recess to the end of each jaw tip to facilitate proper closure of the ligating clip despite misalignment of said jaw tips.

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