Methods and devices for providing access through tissue to a surgical site
First Claim
Patent Images
1. A surgical 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, the cannula being movable between an expanded configuration and a compressed configuration, and the cannula including a plurality of segments with a fluid-tight seal formed between adjacent ones of the segments such that the working channel is fluid tight when the cannula is in the expanded configuration and when the cannula is in the compressed configuration, wherein a biasing force biases the cannula to the compressed configuration;
an adjustment mechanism coupled to the housing and configured to adjust the biasing force; and
a biasing element coupled to the cannula and configured to apply the biasing force to the cannula;
wherein the biasing element comprises at least one cable extending through the cannula.
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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.
123 Citations
19 Claims
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1. A surgical 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, the cannula being movable between an expanded configuration and a compressed configuration, and the cannula including a plurality of segments with a fluid-tight seal formed between adjacent ones of the segments such that the working channel is fluid tight when the cannula is in the expanded configuration and when the cannula is in the compressed configuration, wherein a biasing force biases the cannula to the compressed configuration; an adjustment mechanism coupled to the housing and configured to adjust the biasing force; and a biasing element coupled to the cannula and configured to apply the biasing force to the cannula; wherein the biasing element comprises at least one cable extending through the cannula. - View Dependent Claims (2, 4)
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3. A surgical 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, the cannula being movable between an expanded configuration and a compressed configuration, and the cannula including a plurality of segments with a fluid-tight seal formed between adjacent ones of the segments such that the working channel is fluid tight when the cannula is in the expanded configuration and when the cannula is in the compressed configuration, wherein a biasing force biases the cannula to the compressed configuration; and an adjustment mechanism coupled to the housing and configured to adjust the biasing force; wherein the cannula has a length in the expanded configuration that is greater than a length of the cannula in the compressed configuration. - View Dependent Claims (5, 6)
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7. A surgical 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, the cannula being movable between an expanded configuration and a compressed configuration, and the cannula including a plurality of segments with a fluid-tight seal formed between adjacent ones of the segments such that the working channel is fluid tight when the cannula is in the expanded configuration and when the cannula is in the compressed configuration, wherein a biasing force biases the cannula to the compressed configuration; and an adjustment mechanism coupled to the housing and configured to adjust the biasing force; wherein the adjustment mechanism is selectively rotatable relative to the housing to adjust the biasing force. - View Dependent Claims (8, 9)
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10. A surgical 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,; and a plurality of biasing elements coupled to the cannula and configured to apply a biasing force to the cannula to bias the cannula to a compressed configuration, wherein less than a total number of the biasing elements are configured to be manipulated at a time to cause the cannula to bend and to cause adjustment of the biasing force. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification