Surgical clip applier
First Claim
Patent Images
1. A surgical clip applier comprising:
- a housing;
a pair of handles pivotably connected to opposite sides of said housing;
a body portion extending from said housing;
a plurality of clips;
a jaw assembly including a pair of jaw members extending from an end of said body portion opposite said housing, said jaw assembly adapted to accommodate a clip therein and being operable to effect closure of a clip in response to movement of at least one of the handles;
a clip pusher member slidably positioned in at least one of said body portion and said housing, said pusher member being operatively connected to at least one of said handles at a first end and having a nose portion terminating adjacent said jaw members at a second end, said pusher member being moved towards said housing as said handles are moved in a first direction to move said nose portion behind a distalmost clip in said plurality of clips, said pusher member being moved towards said jaw assembly as said handles are moved in a second direction to move said distalmost clip between said jaw members;
a resilient member connected to the pusher member for biasing the pusher member towards the jaw members; and
a damping member for decelerating the advancement of the pusher member in the distal direction towards the jaw members.
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Accused Products
Abstract
A surgical clip applier includes a housing, a pair of handles pivotably connected to opposite sides of the housing, a channel assembly extending from the housing and a jaw assembly. A pusher bar assembly is provided to feed clips from a series of clips to the jaw mechanism under the influence of a spring, and a damping mechanism is provided to generate a force on the pusher member to counteract the spring force and decelerate the distal advancement of the pusher member as a clip is fed to the jaw assembly.
351 Citations
16 Claims
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1. A surgical clip applier comprising:
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a housing; a pair of handles pivotably connected to opposite sides of said housing; a body portion extending from said housing; a plurality of clips; a jaw assembly including a pair of jaw members extending from an end of said body portion opposite said housing, said jaw assembly adapted to accommodate a clip therein and being operable to effect closure of a clip in response to movement of at least one of the handles; a clip pusher member slidably positioned in at least one of said body portion and said housing, said pusher member being operatively connected to at least one of said handles at a first end and having a nose portion terminating adjacent said jaw members at a second end, said pusher member being moved towards said housing as said handles are moved in a first direction to move said nose portion behind a distalmost clip in said plurality of clips, said pusher member being moved towards said jaw assembly as said handles are moved in a second direction to move said distalmost clip between said jaw members; a resilient member connected to the pusher member for biasing the pusher member towards the jaw members; and a damping member for decelerating the advancement of the pusher member in the distal direction towards the jaw members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. In a surgical clip applier having a housing, at least one handle pivotably connected to the housing, a channel assembly extending from the housing, a series of clips carried by the channel assembly, a pair of jaw members extending from an end of the channel assembly opposite the housing, a clip follower for urging the series of clips towards the jaw members, a spring biased clip pusher member slidably disposed in the channel assembly for advancing a distalmost clip from the series of clips under the influence of the biasing spring to a position between the jaw members in response to movement of the handle, and a jaw closure mechanism to effect closure of the jaw members to deform a clip positioned therebetween in response to movement of the handle, the improvement which comprises:
a damping mechanism for decelerating the distal advancement of the pusher member, the damping mechanism creating a force on the pusher member to counteract an advancing force on the pusher member generated by the biasing spring. - View Dependent Claims (11, 12, 13, 14, 15)
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16. In a surgical clip applier having a housing, at least one handle pivotably connected to the housing, a channel assembly extending from the housing, a series of clips carried by the channel assembly, a pair of jaw members extending from an end of the channel assembly opposite the housing, a clip follower for urging the series of clips towards the jaw members, a spring biased clip pusher member slidably disposed in the channel assembly for advancing a distalmost clip from the series of clips under the influence of the biasing spring to a position between the jaw members in response to movement of the handle, and a jaw closure mechanism to effect closure of the jaw members to deform a clip positioned therebetween in response to movement of the handle, the improvement which comprises:
a damping mechanism operatively associated with the clip pusher member for retarding the distal advancement of the clip pusher member during advancement of a clip from the series to the jaw members, the damping mechanism applying a force on the clip pusher member to counteract a force on the clip pusher member generated by the biasing spring.
Specification