Surgical clip applier
AssigneeCovidien LP
InventorsJaroslaw T. Malkowski, Brian Rockrohr
Life of this patent
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Abstract
A surgical clip applier is provided and includes a ratchet mechanism having a rack member connected to a drive channel such that axial translation of the drive channel results in axial translation of the rack member, the rack member defining a first set of teeth along a first side thereof and a second set of teeth along a second side thereof. The ratchet mechanism including a first pawl and a second pawl each tiltably supported in the housing and disposed on respective opposed sides of the rack member; and a buckling spring interposed between the first pawl and the second pawl and constrained in a slot formed in the rack member, wherein the buckling spring is dimensioned so as to bow in one of a proximal direction and a distal direction.
Claims9
A surgical clip applier, comprising:
- a housing;
- a handle connected to the housing;
- a channel assembly extending from the housing;
- a clip carrier disposed within the channel assembly and defining a channel;
- a plurality of clips loaded in the channel of the clip carrier;
- a drive channel supported in the housing and the channel assembly;
- and
- a ratchet mechanism including:
- a rack member associated with the drive channel;
- a first pawl and a second pawl supported in the housing adjacent to the rack member;
- and
- a spring interposed between the first pawl and the second pawl, the spring coupled to the first pawl and to the second pawl, the spring configured to enable movement of the rack member and to approximate the first and second pawls toward the rack member.
Dependencies are inferred from the claim text.