Placing sutures
A suturing instrument is configured for to apply sutures to approximate, ligate, or fixate tissue in, for example, open, mini incision, trans-vaginal, or endoscopic surgical procedures. The suturing instrument includes an elongate body member, a needle exit port, a needle receiving port, and a needle deployment mechanism. The suturing instrument eliminates the need for a preassembled needle and suture and reduces or eliminates the possibility of needle loss during suturing.
1. A suturing instrument, comprising:
an elongate body member including a distal portion defining a first opening and a second opening that opposes the first opening, the second opening having a centerline axis;
a tubular suture holder having a longitudinal axis and defining a lumen, the tubular suture holder configured to hold at least one suture within the lumen and to allow movement of the at least one suture through and out of the lumen, the longitudinal axis of the tubular suture holder being perpendicular to the centerline axis of the second opening, the tubular suture holder being partially disposed within the second opening; and
a needle deployment mechanism disposed at least partially within the elongate body member for moving a needle between the first and second openings, the needle configured for capturing the at least one suture from the second opening and pulling at least a portion of the at least one suture through and out of the lumen of the tubular suture holder.
2. The suturing instrument of claim 1 wherein the tubular suture holder comprises a flexible tubular structure.
3. The suturing instrument of claim 2 wherein the flexible tubular structure comprises a spring.
4. The suturing instrument of claim 2 wherein the flexible tubular structure comprises a nickel-titanium alloy tube.
5. The suturing instrument of claim 1 wherein the needle includes a hook-shaped distal portion.
6. The suturing instrument of claim 5 wherein the needle further includes a tissue-penetrating tip distal of the hook-shaped distal portion.
7. The suturing instrument of claim 5 wherein the needle further includes a latch adapted to retain the at least one suture, the latch movable between a first position in which the hook-shaped distal portion is open and a second position in which the hook-shaped distal portion is closed.
8. The suturing instrument of claim 7 wherein the latch is pivotably coupled to the needle.
9. The suturing instrument of claim 7 wherein the latch is slidably disposed on the needle.
10. The suturing instrument of claim 1 wherein the needle is substantially straight.
11. The suturing instrument of claim 1 wherein the needle is curved.
12. The suturing instrument of claim 1 wherein the elongate body member is substantially straight.
13. The suturing instrument of claim 1 wherein the elongate body member includes one or more bends.
14. The suturing instrument of claim 1 further comprising a handle disposed opposite the distal portion of the elongate body member, the handle at least partially housing the needle deployment mechanism.
15. The suturing instrument of claim 1 wherein the distal portion of the elongate body member can rotate relative to a remainder of the elongate body member.
16. A suturing instrument, comprising:
an elongate body member including a distal portion defining a first opening and a second opening that opposes the first opening, the second opening having a centerline axis;
a tubular suture holder having a longitudinal axis and defining a lumen, the tubular suture holder configured to hold at least one suture within the lumen and to allow movement of the at least one suture through and out of the lumen, the longitudinal axis of the tubular suture holder being perpendicular to the centerline axis of the second opening, the tubular suture holder being partially disposed within the second opening; and
a needle deployment mechanism disposed at least partially within the elongate body member for moving a needle between the first and second openings, the needle comprising a hooked-shaped distal portion defining a space within the needle for capturing the at least one suture from the second opening, the hook-shaped distal portion including a tissue-penetrating distal tip.
17. The suturing instrument of claim 16 wherein the needle further includes a latch adapted to retain the at least one suture within the space defined by the hooked-shaped distal portion, the latch movable between a first position in which the hook-shaped distal portion is open to expose the space of the hooked-shaped distal portion and a second position in which the hook-shaped distal portion is closed to enclose the space of the hooked-shaped distal portion.
18. The suturing instrument of claim 17 wherein the latch is pivotably coupled to the needle.
19. The suturing instrument of claim 17 wherein the latch is slidably disposed on the needle.
20. The suturing instrument of claim 16 wherein a portion of the needle is curved.