Wound closure device including direct-driven needle
A suturing device includes a housing, a rod, a ferrule assembly, and a needle. The housing defines a guide lumen extending longitudinally therethrough. The rod is engaged with the housing and extends distally therefrom. The ferrule assembly is disposed at a distal end of the rod and is configured to releasably retain a ferrule therein. The ferrule is adapted to retain of a portion of a suture therein. The needle is configured for translation through the guide lumen defined within the housing. A distal end of the needle is configured to engage the ferrule within the ferrule assembly for removal of the ferrule from the ferrule assembly.
1. A suturing device, comprising:
a housing;
an elongate member extending from the housing and being selectively movable relative thereto;
a lock mounted with respect to the housing and configured to selectively secure the elongate member at a predetermined position relative to the housing;
a ferrule assembly fixedly supported at a distal end portion of the elongate member;
a ferrule releasably coupled to the ferrule assembly;
a suture engaged with the ferrule; and
a needle at least partially disposed within the housing and having a needle tip segment, the needle configured for movement relative to the elongate member between a spaced position where the needle tip segment and the ferrule are in spaced relation to receive tissue therebetween and an approximated position where the needle tip segment passes through the tissue and engages the ferrule, whereby upon return of the needle toward the spaced position, the ferrule is released from the ferrule assembly and is drawn along with at least a portion of the suture through the tissue and toward the housing.
2. The suturing device according to claim 1 , wherein the housing includes a lumen configured to receive the elongate member.
3. The suturing device according to claim 2 , wherein the lock is movably mounted to the housing between an open condition where the elongate member is translatable through the lumen of the housing and a closed condition where the elongate member is secured at the predetermined position relative to the housing.
4. The suturing device according to claim 3 , wherein the ferrule assembly includes a ferrule holder, the ferrule being releasably disposed within the ferrule holder in opposition to the needle tip segment.
5. The suturing device according to claim 4 , wherein the housing includes a guide lumen for receiving the needle, the needle configured to be removed from the guide lumen to release the ferrule from the ferrule holder.
6. The suturing device according to claim 4 , further comprising a tissue stop disposed on at least one of the ferrule holder or the housing.
7. The suturing device according to claim 3 , wherein the elongate member is selectively translatable relative to the housing between a first position where the elongate member extends a minimum distance beyond the housing, and a second position where the elongate member extends a maximum distance beyond the housing.
8. The suturing device according to claim 1 , wherein the needle tip segment includes a needle lumen configured to at least partially receive the ferrule upon movement of the needle to the approximated position.
9. The suturing device according to claim 8 , wherein the needle tip segment and the ferrule are correspondingly dimensioned to establish a friction fit upon movement of the needle to the approximated position.
10. The suturing device according to claim 1 , wherein the suture is coupled to the ferrule and extends through the housing for engagement by a clinician.
11. The suturing device according to claim 10 , wherein the suture includes a loop configured for engagement by the clinician.