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US 2026/0060520 A1Published application
Trocar with cleaning and smoke evacuation
AssigneeCovidien LP
InventorsTingting Jin, Chengjun Sun
Life of this patent
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Abstract
A trocar with cleaning and smoke evacuation functions is provided for use during endoscopic surgical procedures. The trocar includes a housing and an elongated shaft with channels and an access valve at the distal tip. The trocar is fitted with a multiport valve that alternates between an inlet for cleaning and an outlet for smoke filtering.
Claims15
A surgical access device comprising:
- a trocar comprising:
- a proximal housing comprising a first port and a second port;
- an elongated shaft extending from the proximal housing to a distal end;
- a first channel and a second channel formed in the elongated shaft;
- and
- an access valve at the distal end of the elongated shaft;
- and
- a multiport valve fitted to the first port, where the multiport valve comprises an inlet, an outlet, a central branch, and a valve stem rotatable between a first position exposing the central branch to the inlet and blocking the outlet, and a second position exposing the central branch to the outlet and blocking the inlet,
- wherein the access valve comprises a flexible face comprising four petals divided by a first slit and a second slit intersecting the first slit, wherein the first slit is positioned in a first recess in the face and the second slit is positioned in a second recess in the face, the first and second recesses forming openings when the access valve is flexed open.
6 more elements
A surgical access device comprising:
- a trocar comprising:
- a proximal housing comprising a valve port and a suction port;
- an elongated shaft extending from the proximal housing to a distal end;
- a cannula fitted over the elongated shaft;
- a central lumen passing through the elongated shaft;
- a first channel and a second channel between the elongated shaft and the cannula;
- and
- an access valve at the distal end of the elongated shaft;
- a multiport valve fitted to the valve port, where the multiport valve comprises an inlet, an outlet, a central branch, and a valve stem rotatable between a first position exposing the central branch to the inlet and blocking the outlet, and a second position exposing the central branch to the outlet and blocking the inlet;
- and
- a filter mated with the outlet of the multiport valve,
- wherein the access valve comprises a face comprising petals divided by a first slit and a second slit intersecting the first slit, and wherein the petals flex to form gas pathway chutes in response to passage of a medical instrument through the access valve in a distal direction.
9 more elements
Dependencies are inferred from the claim text.