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Surgical clip applier

  • US 10,004,502 B2
  • Filed: 10/14/2015
  • Issued: 06/26/2018
  • Est. Priority Date: 12/09/2009
  • Status: Active Grant
First Claim
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1. A surgical clip applier, comprising:

  • a housing;

    a drive channel translatably supported in the housing; and

    a counter mechanism supported in the housing and including;

    a counter dial rotatably supported in the housing, the counter dial including a first face and an opposing second face, the first face defining indicia visible through the housing and the second face defining a bore therein, the bore including a perimetrical array of uni-directional teeth;

    a counter clutch engagably nested in the bore defined in second face of the counter dial and operatively coupled to the drive channel, the counter clutch including at least one resilient finger extending tangentially therefrom and configured to rotatably engage the uni-directional teeth of the bore to rotate the counter dial in a single direction relative to the drive channel; and

    a ratchet mechanism including a rack member and a ratchet pawl, the rack member translatably supported in the housing, operatively coupled to the drive channel and including a plurality of ratchet teeth, the ratchet pawl supported in the housing and configured to engage the plurality of ratchet teeth to restrict translation of the rack member relative to the housing;

    a clip carrier; and

    a plurality of clips loaded in the clip carrier;

    wherein when the drive channel is translated in a first direction relative to the housing, the counter clutch is configured to rotate in a first direction relative to the drive channel such that the at least one resilient finger of the counter clutch engages the uni-directional teeth of the bore to rotate the counter dial in the first direction relative to the drive channel, and wherein when the drive channel is translated in a second direction relative to the housing, the counter clutch is configured to rotate in a second direction relative to the drive channel such that the at least one resilient finger of the counter clutch disengages from the uni-directional teeth of the bore and the counter dial is not rotated in the second direction relative to the drive channel.

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