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US 10,420,585 B2Granted
Laparoscopic cannula with suturing passage cutoff
OwnerReza Mohajer-Shojaeeinventor
Life of this patent
Estimating the term…
Abstract
A cannula for use in laparoscopic surgery has a central passage which may accept a trocar to create a laparoscopic incision in a body wall to an inner body cavity. A tubular section of the cannula is then pressed into the incision to form a port. The tubular section has passages through its walls for suturing needles and a source for insufflating gas. A tubular sleeve is slidably supported on the exterior surface of the tubular cannula for movement between a raised position clear of the needle passage exit ports and a lowered or rotated position blocking the exit ports to prevent insufflation gases from passing into the body wall.
Claims20
A cannula for use in laparoscopic surgery performed through a wall of a body cavity, the cannula comprising:
- an elongated tubular section having a tubular section proximal end, a tubular section distal end, and a wall, the wall having an interior surface defining an interior of the tubular section and an exterior surface, the tubular section open at both the proximal and distal ends and having a central axis;
- a first passage through the wall of the tubular section and inclined with respect to the central axis, the first passage comprising a first opening through the wall of the tubular section at a position adjacent the proximal end of the tubular section, and a second opening through the wall of the tubular section adjacent to the distal end of the tubular section at a position on the wall circumferentially and distally offset compared to the position of the first opening, the first and second openings being aligned so that a first straight suture needle having a proximal end and a distal end may be passed through both the first and second openings with a section of the first straight suture needle intermediate the first and second openings transversing the interior of the tubular section at an angle of inclination to said central axis, and with the distal end of the first straight suture needle projecting out of the second opening and into a body cavity;
- a first suture needle guide disposed at or near the tubular section proximal end of the elongated tubular section on the exterior surface of the wall at an external periphery of the tubular section proximal end such that the first suture needle guide laterally and externally extends from the exterior surface of the wall and is spaced away from the interior surface of the wall, where the first suture needle guide is a ring, the first suture needle guide being aligned so that the first straight suture needle may be passed through the first suture needle guide and both the first and second openings with the section of the first straight suture needle intermediate the first and second openings transversing the interior of the tubular section at an angle to said central axis, and with the distal end of the first straight suture needle projecting out of the second opening and into the body cavity;
- and
- a blocking member slidably supported on the elongated tubular section for motion along or around the central axis on said exterior surface of the wall between a first position in which the blocking member blocks flow of gases through said first and second openings and a second position clear of said first and second openings for allowing passage of said first straight suture needle through said first and second openings.
2 more elements
A cannula for use in laparoscopic surgery performed through a wall of a body cavity, the cannula comprising:
- an elongated tubular section having a tubular section proximal end, a tubular section distal end, and a wall, the wall having an interior surface defining an interior of the tubular section and an exterior surface, the tubular section open at both the proximal and distal ends and having a central axis;
- a first passage through the wall of the tubular section and inclined with respect to the central axis, the first passage comprising a first opening through the wall of the tubular section at a position adjacent the proximal end of the tubular section, and a second opening through the wall of the tubular section adjacent to the distal end of the tubular section at a position on the wall circumferentially and distally offset compared to the position of the first opening, the first and second openings being aligned so that a first straight suture needle having a proximal end and a distal end may be passed through both the first and second openings with a section of the first straight suture needle intermediate the first and second openings transversing the interior of the tubular section at an angle of inclination to said central axis, and with the distal end of the first straight suture needle projecting out of the second opening and into a body cavity;
- a first suture needle guide disposed at or near the tubular section proximal end of the elongated tubular section on the exterior surface of the wall at an external periphery of the tubular section proximal end such that the first suture needle guide laterally and externally extends from the exterior surface of the wall and is spaced away from the interior surface of the wall, where the first suture needle guide comprises a tube, the first suture needle guide being aligned so that the first straight suture needle may be passed through the first suture needle guide and both the first and second openings with the section of the first straight suture needle intermediate the first and second openings transversing the interior of the tubular section at an angle to said central axis, and with the distal end of the first straight suture needle projecting out of the second opening and into the body cavity;
- and
- a blocking member slidably supported on the elongated tubular section for motion along or around the central axis on said exterior surface of the wall between a first position in which the blocking member blocks flow of gases through said first and second openings and a second position clear of said first and second openings for allowing passage of said first straight suture needle through said first and second openings.
2 more elements
A cannula for use in laparoscopic surgery performed through a wall of a body cavity, the cannula comprising:
- an elongated tubular section having a tubular section proximal end, a tubular section distal end, and a wall, the wall having an interior surface defining an interior of the tubular section and an exterior surface, the tubular section open at both the proximal and distal ends and having a central axis;
- a first passage through the wall of the tubular section and inclined with respect to the central axis, the first passage comprising a first opening through the wall of the tubular section at a position adjacent the proximal end of the tubular section, and a second opening through the wall of the tubular section adjacent to the distal end of the tubular section at a position on the wall circumferentially and distally offset compared to the position of the first opening, the first and second openings being aligned so that a first straight suture needle having a proximal end and a distal end may be passed through both the first and second openings with a section of the first straight suture needle intermediate the first and second openings transversing the interior of the tubular section at an angle of inclination to said central axis, and with the distal end of the first straight suture needle projecting out of the second opening and into a body cavity;
- a first suture needle guide disposed at or near the tubular section proximal end of the elongated tubular section on the exterior surface of the wall at an external periphery of the tubular section proximal end such that the first suture needle guide laterally and externally extends from the exterior surface of the wall and is spaced away from the interior surface of the wall, the first suture needle guide being aligned so that the first straight suture needle may be passed through the first suture needle guide and both the first and second openings with the section of the first straight suture needle intermediate the first and second openings transversing the interior of the tubular section at an angle to said central axis, and with the distal end of the first straight suture needle projecting out of the second opening and into the body cavity;
- a blocking member slidably supported on the elongated tubular section for motion along or around the central axis on said exterior surface of the wall between a first position in which the blocking member blocks flow of gases through said first and second openings and a second position clear of said first and second openings for allowing passage of said first straight suture needle through said first and second openings;
- and
- a protruding portion, the protruding portion extending outward relative to the central axis from the distal end of the tubular section for preventing the blocking member from fully entering the body cavity.
3 more elements
Dependencies are inferred from the claim text.