Suturing apparatus and method
View Patent ↗A suturing apparatus comprises a pair of jaws. A bendable needle housed in one of the jaws is adapted to carry a suture. An optional suture receiver may be disposed adjacent to the opposite jaw. A transition block curves the needle and directs it in a direction generally unparallel to an axis of the carrying jaw. The needle may also be configured to retrieve a suture. A retaining mechanism holds a suture in place to be engaged by the needle. The jaw housing the needle may include a lateral opening through which the suture may be inserted. The needle may also include a lateral notch which may be aligned with lateral opening to receive the suture. An actuator coupled to the needle enables the user to move the needle proximally to align the notch with the lateral slot.
1. A suturing apparatus for passing suture through tissue, comprising:
a bendable needle having a generally flat, narrow and elongate configuration, a distal needle tip, and a transverse open-sided needle notch located at or near the needle tip;
a first jaw defining an axis and having an axial channel for carrying the bendable needle, an axial through-slot that extends transversely through the jaw from top to bottom, runs axially along the first jaw at or near a distal end of the first jaw, and is in communication with the axial channel, and a transverse ingress defined by an opening that is located at an edge of the first jaw, extends through the first jaw from top to bottom, and is in communication with the axial through-slot;
the bendable needle reciprocally movable between a proximal position where the bendable needle is in a first substantially straight configuration with the needle tip and needle notch resting inside the first jaw and a distal position where the bendable needle is in a second curved configuration with the needle tip and needle notch protruding from the first jaw,
the needle notch aligning with the first jaw's transverse ingress when the bendable needle is moved to a particular position for transversely loading suture held across the first jaw into the needle notch and the first jaw's axial through-slot via the transverse ingress, and for temporarily capturing the suture within the needle notch with the suture extending above and below the first jaw's axial through slot and axially movable within the first jaw's axial through-slot;
a second jaw movable with respect to the first jaw for holding tissue to be sutured between the first and second jaws; and
an actuator that reciprocally moves the bendable needle between the proximal position and the distal position, the needle tip, needle notch, and temporarily captured suture moving axially forward within the first jaw's axial through-slot and through the tissue held between the first and second jaws when the bendable needle is moved to the distal position where the needle tip, needle notch, and temporarily captured suture are located beyond a distal side of the tissue with the suture in the needle notch forming a suture loop, the suture loop being released from the needle notch and remaining on the distal side of the tissue when the bendable needle is moved back to the proximal position.
2. The apparatus of claim 1 , wherein the actuator comprises a thumb lever.
3. The apparatus of claim 1 , wherein the second jaw comprises at least one hook.
4. The apparatus of claim 1 , wherein:
the needle notch is disposed on a first side of the bendable needle; and
the bendable needle further comprises a second side opposite to the first side.
5. The apparatus of claim 4 , wherein the bendable needle further comprises at least one crescent formed on the second side.
6. The apparatus of claim 4 , wherein:
the bendable needle defines a needle axis that extends generally parallel to the first side;
the bendable needle comprises a distal ledge disposed on the first side distally of the needle notch and a proximal ledge disposed on the first side proximally of the needle notch; and
the distal ledge defines a first transverse distance from the needle axis that is greater than a second transverse distance from the needle axis defined by the proximal ledge.
7. The apparatus of claim 4 , wherein the needle notch has an opening on the first side of the bendable needle and the needle notch extends proximally-therefrom.