Arcuate apparatus for applying two-part surgical fasteners
First Claim
1. Apparatus for applying a plurality of rows of fasteners to body tissue which comprises a first member having a fastener cartridge for supporting at least two rows of fasteners and a second member disposed opposite said first member, said first and second members adapted to be assembled in a manner to position body tissue between said cartridge and said second member, means adapted to be advanced distally to sequentially drive said fasteners into the body tissue toward said second member, knife means including a knife bar and a cutting edge at a distal end thereof and movable between a proximal position and a distal position to cut body tissue between said at least two rows of fasteners when said fasteners are driven into the body tissue, and means for contacting said knife bar to block movement thereof to said distal position after advancement of said knife bar to cut tissue and subsequent retraction to said proximal position.
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Accused Products
Abstract
Apparatus is disclosed for applying surgical fasteners to body tissue along an arcuate path. Each surgical fastener may be in the form of a two-part fastener having a pronged fastener portion for piercing body tissue, and an apertured retainer dimensioned and configured for engaged reception of the pronged fastener portion in interference fit therewith for gripping the body tissue therebetween. Alternatively, the fasteners may be in the form of deformable staples. The apparatus preferably includes arcuately shaped means for holding a plurality of the fastener portions in generally aligned relation, correspondingly arcuately shaped means spaced from the fastener portion holding means for gripping body tissue therebetween and for releasably holding a plurality of the retainers in generally aligned relation and positioned opposite the fasteners when the body tissue is positioned therebetween. Means is provided for sequentially advancing the pronged fastener portions toward the apertured retainers to cause the fastener portions to pierce the body tissue and to be received within the apertures of the retainers in engaged interference relation so as to cause the fastener portions and the retainers to be engaged while gripping the body tissue therebetween. A knife may be provided to cut the body tissue adjacent the fasteners as the fasteners are applied. A method for applying fasteners to body tissue on the apparatus of the invention along an arcuate path is also disclosed.
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Citations
23 Claims
- 1. Apparatus for applying a plurality of rows of fasteners to body tissue which comprises a first member having a fastener cartridge for supporting at least two rows of fasteners and a second member disposed opposite said first member, said first and second members adapted to be assembled in a manner to position body tissue between said cartridge and said second member, means adapted to be advanced distally to sequentially drive said fasteners into the body tissue toward said second member, knife means including a knife bar and a cutting edge at a distal end thereof and movable between a proximal position and a distal position to cut body tissue between said at least two rows of fasteners when said fasteners are driven into the body tissue, and means for contacting said knife bar to block movement thereof to said distal position after advancement of said knife bar to cut tissue and subsequent retraction to said proximal position.
- 10. Apparatus for applying a plurality of rows of fasteners to body tissue which comprises a first member having a fastener cartridge for supporting at least two rows of fasteners and a second member disposed opposite said first member, said first and second members adapted to be assembled in a manner to position body tissue between said cartridge and said second member, a pair of bars movable between proximal positions and distal positions to sequentially drive said fasteners into the body tissue toward said second member a knife bar movable between a first position and a second position for cutting body tissue between said at least two rows of fasteners when said fasteners are advanced into the body tissue and toward said second member, and means for engaging said knife bar to prevent movement of said knife bar to said second position after said fasteners are advanced and said knife bar is retracted to said first position.
- 14. In an apparatus for applying a plurality of rows of fasteners to body tissue, the apparatus comprising a first member having a fastener cartridge adapted for supporting a plurality of fasteners and a second member disposed opposite said first member, said first and second members being adapted to be assembled in a manner to permit positioning of body tissue between said cartridge and said second member, means adapted to be advanced distally to drive said fasteners into the body tissue toward said second member, means to cut body tissue generally between at least two pairs of rows of said fasteners when said fasteners are advanced into the body tissue and toward said second member, and means for engaging said tissue cutting means to prevent distal movement thereof after said fasteners are advanced and said driving means is retracted to a proximal position.
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21. A surgical fastening apparatus adapted for single use application of at least four rows of fasteners to body tissue which comprises:
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a) a first channel member adapted to support a single use fastener cartridge, said fastener cartridge supporting at least two pairs of rows of fasteners positioned in staggered relation; b) a second channel member adapted to be assembled with said first channel member; c) pivotally mounted locking means to securely attach said first and second channel members together in a manner to grip body tissue between said fastener cartridge and said second channel member; d) knife means positioned between said two pairs of rows of fasteners to cut body tissue generally medially of said rows of fasteners while said fasteners are applied to the body tissue; e) a pusher assembly comprising at least two cam bars dimensioned and configured to effect sequential movement of said fasteners toward said fastener closure means in directions generally transverse to the direction of movement of said cam bars, said pusher assembly being attached to said knife means and adapted to be slidably advanced in the distal direction to simultaneously advance said cam bars and said knife means; f) a hook member disposed on the proximal end portion of said knife means; g) a resilient locking clip fixed to at least one of said channel members and having a hook member biased, dimensioned and arranged to engage and hook said knife means hook to prevent distal advancement of said knife means after retraction of said pusher assembly after firing the fasteners; and h) blocking means adapted to prevent said resilient locking hook from engagably hooking said knife means hook prior to advancing said fasteners toward said second channel member whereby advancing said knife means and said fasteners toward the distalmost portion to apply said fasteners to body tissue and to cut the body tissue is permitted and advancement of said knife means and pusher assembly in a distal direction is prevented after withdrawal thereof to a proximal position after applying said fasteners to body tissue. - View Dependent Claims (22, 23)
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Specification