Needle and snare guide apparatus for passing suture
A trocar wound closure system includes a suture passing needle and a guide for directing the needle through the wound site. A distal portion of the needle includes a capture rod with a slot. An obturator tube with a cutout section can be axially actuated to align the cutout section with the slot, and then moved out of alignment so as to capture the suture. The guide includes at least two tracks for directing the needle through the tissue track. A snare loop is located adjacent to the exit of each track, and configured to be actuated from a radially extended configuration to a retracted configuration so as to capture the suture section inserted through each loop. Radially expandable arms at distal section are movable between an expanded configuration and a slender configuration.
1. A surgical guide device to be placed through a tissue track, comprising:
a barrel defining a first channel and a second channel, the first channel comprising a first exit for directing a first suture portion into a body cavity, the second channel comprising a second exit for directing a second suture portion into the body cavity;
a distal tip comprising radially expandable arms;
a first snare cord positioned adjacent to the first exit;
a second snare cord positioned adjacent to the second exit; and
an actuator coupled to the first and second snare cords, the actuator being configured to move the first and second snare cords in unison between a radially extended configuration and a retracted configuration,
wherein the first snare cord in the radially extended configuration comprises a first self-supported snare loop extending generally perpendicular to a long axis of the guide, and
wherein the second snare cord in the radially extended configuration comprises a second self-supported snare loop extending generally perpendicular to a long axis of the guide.
2. The device of claim 1 , further comprising a plunger coupled to the distal tip, and wherein:
the plunger is slidable with respect to the barrel to move the radially expandable arms between a slender configuration and the flared-out configuration; and
the plunger and radially expandable arms are biased to a flared-out configuration.
3. The device of claim 1 , wherein the first snare cord and the second snare cord are detached and separate from any sharp needles.
4. The device of claim 1 , wherein the actuator comprises a slider axially movable with respect to the barrel.
5. The device of claim 1 , wherein the first channel is diagonal to the second channel.
6. The device of claim 1 , wherein:
the actuator moves proximally with respect to the barrel to move the first and second snare cords in unison to the retracted configuration; and
the actuator moves distally with respect to the barrel to move the first and second snare cords in unison to the radially extended configuration.
7. The device of claim 1 , wherein:
the first snare cord comprises a first mono-filament wire; and
the second snare cord comprises a second mono-filament wire.
8. The device of claim 1 , wherein:
the first snare cord comprises a first multi-filament wire; and
the second snare cord comprises a second multi-filament wire.
9. A surgical guide device to be placed through a tissue track, comprising:
a barrel defining a first channel and a second channel, the first channel comprising a first exit for directing a first suture portion into a body cavity, the second channel comprising a second exit for directing a second suture portion into the body cavity;
a distal tip comprising radially expandable arms;
a first snare cord positioned adjacent to the first exit and protruding radially outward from the distal tip in a first direction;
a second snare cord positioned adjacent to the second exit and protruding radially outward from the distal tip in a second direction; and
an actuator coupled to the first and second snare cords, the actuator being movable with respect to the barrel so as to move the first and second snare cords in unison between a radially extended configuration and a retracted configuration,
wherein the first snare cord and the second snare cord are detached and separate from any sharp needles, and
wherein the first snare cord in the radially extended configuration comprises a first self-supported snare loop extending generally perpendicular to a long axis of the guide, and
wherein the second snare cord in the radially extended configuration comprises a second self-supported snare loop extending generally perpendicular to a long axis of the guide.
10. The device of claim 9 , further comprising a plunger coupled to the distal tip, and wherein:
the plunger is slidable with respect to the barrel to move the radially expandable arms between a slender configuration and the flared-out configuration; and
the plunger and radially expandable arms are biased to a flared out configuration.
11. The device of claim 9 , wherein:
the actuator moves proximally with respect to the barrel to move the first and second snare cords in unison to the retracted configuration; and
the actuator moves distally with respect to the barrel to move the first and second snare cords in unison to the radially extended configuration.
12. The device of claim 9 , wherein the first channel is diagonal to the second channel.
13. The device of claim 9 , wherein:
the first snare cord comprises a first mono-filament wire; and
the second snare cord comprises a second mono-filament wire.
14. The device of claim 9 , wherein:
the first snare cord comprises a first multi-filament wire; and
the second snare cord comprises a second multi-filament wire.