Instrument seal with inverting shroud
First Claim
Patent Images
1. A surgical access device comprising a proximal end;
- a distal end;
an instrument access channel extending through the access device from the proximal end to the distal end;
a seal housing having a cap providing entry to the access channel at the proximal end;
an instrument seal comprising an opening substantially aligned with the instrument access channel and a sealing portion configured to seal against an instrument inserted into the opening; and
a shroud substantially aligned with the instrument access channel, an inverting portion thereof disposed distally of the opening in the instrument seal, the shroud comprising an aperture through the inverting portion;
the instrument seal being located between the seal housing cap and the shroud, whereinthe access device is convertible between a first state and a second state;
in the first state, the inverting portion of the shroud is not inverted;
in the second state, the inverting portion of the shroud is inverted and contacts the instrument seal, thereby protecting the instrument seal from damage by an instrument; and
moving an instrument proximally in the access channel converts the access device from the first state to the second state.
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Abstract
A surgical access device comprising an instrument access channel extending through an instrument seal and a shroud comprising an inverting region disposed distally of the instrument seal exhibits improved tear-resistance of the instrument seal from instrument manipulation, for example, instrument withdrawals. Some embodiments of the inverting region invert through the instrument seal on instrument withdrawal. Some embodiments of the inverting region induce at least a portion of the instrument seal itself to invert on instrument withdrawal.
78 Citations
17 Claims
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1. A surgical access device comprising a proximal end;
- a distal end;
an instrument access channel extending through the access device from the proximal end to the distal end;
a seal housing having a cap providing entry to the access channel at the proximal end;
an instrument seal comprising an opening substantially aligned with the instrument access channel and a sealing portion configured to seal against an instrument inserted into the opening; and
a shroud substantially aligned with the instrument access channel, an inverting portion thereof disposed distally of the opening in the instrument seal, the shroud comprising an aperture through the inverting portion;
the instrument seal being located between the seal housing cap and the shroud, whereinthe access device is convertible between a first state and a second state; in the first state, the inverting portion of the shroud is not inverted; in the second state, the inverting portion of the shroud is inverted and contacts the instrument seal, thereby protecting the instrument seal from damage by an instrument; and moving an instrument proximally in the access channel converts the access device from the first state to the second state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
- a distal end;
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17. A surgical access device comprising a proximal end;
- a distal end;
an instrument access channel extending through the access device from the proximal end to the distal end;
a seal housing having a cap providing entry to the access channel at the proximal end;
an instrument seal substantially aligned with the instrument access channel and having a sealing portion configured to seal against an instrument inserted into the opening; and
a means for protecting the instrument seal from damage on withdrawing an instrument from the instrument access channel by contact with the instrument seal the instrument seal being located between the seal housing cap and said means for protecting the instrument seal.
- a distal end;
Specification