Methods and devices for providing surgical access through tissue to a surgical site
First Claim
Patent Images
1. A modular access device, comprising:
- a housing having a cannula extending distally therefrom, the housing and the cannula defining a working channel extending therethrough for receiving an instrument;
at least one seal element disposed within the working channel and configured to form at least one of a seal around an instrument disposed through the working channel and a seal across the working channel when no instrument is disposed therethrough; and
an anchor segment removably coupled to a distal end of the cannula, the anchor segment having a plurality of flexible wires extending between a proximal portion of the anchor segment and a distal portion of the anchor segment, the plurality of flexible wires being spaced longitudinally apart from one another and extending along a spiral between the proximal portion and the distal portion.
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Abstract
Methods and devices are provided for providing surgical access into a body cavity. A surgical access port is provided that has an adjustable longitudinal length, such as by being formed from multiple segments configured to move relative to one another. An anchor can be coupled to a distal end of the surgical access port to help secure the surgical access port within a tissue opening by engaging a distal side of the tissue. Optionally, the anchor can be removably coupled to the distal end of the surgical access port, thereby allowing any one of a plurality of anchors to be selectively coupled thereto.
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Citations
16 Claims
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1. A modular access device, comprising:
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a housing having a cannula extending distally therefrom, the housing and the cannula defining a working channel extending therethrough for receiving an instrument; at least one seal element disposed within the working channel and configured to form at least one of a seal around an instrument disposed through the working channel and a seal across the working channel when no instrument is disposed therethrough; and an anchor segment removably coupled to a distal end of the cannula, the anchor segment having a plurality of flexible wires extending between a proximal portion of the anchor segment and a distal portion of the anchor segment, the plurality of flexible wires being spaced longitudinally apart from one another and extending along a spiral between the proximal portion and the distal portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A modular access system, comprising:
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a housing configured to be positioned above an outer surface of a tissue; a cannula extending distally from the housing and configured to extend through an opening in the tissue; a plurality of anchors of differing configurations, each anchor being removably matable to a distal end of the cannula, and each anchor being movable between a first configuration in which the anchor has a first outer diameter and a second configuration in which the anchor has a second outer diameter that is greater than the first outer diameter; and an obturator that is disposable through the housing and the cannula, the obturator having a first engagement feature formed on an outer sidewall thereof that is configured to engage a second engagement feature formed on an inner surface of one of the plurality of anchors such that when the first engagement feature engages the second engagement feature and the obturator is rotated about a longitudinal axis of the obturator, the rotation causes the anchor to move from the first configuration to the second configuration. - View Dependent Claims (13, 14, 15, 16)
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Specification