Surgical articles for placing an implant about a tubular tissue structure and methods
View Patent ↗A minimally invasive surgical instrument for placing an implantable article about a tubular tissue structure is disclosed. The surgical instrument is particularly useful for treating urological disorders such as incontinence. Surgical methods using the novel instrument are also described.
1. A surgical device for placing an implantable article about a tubular tissue structure comprising:
an elongate tubular tissue structure immobilizer sized and shaped to be placed within the tubular tissue structure,
an implantable article deployment member movable about the immobilizer between a retracted position and an extended position;
an actuator for moving the implantable article deployment member between the retracted and extended positions, wherein the retracted position of the implantable article deployment member is situated within the tubular tissue structure and the extended position is located external to the tubular tissue structure;
a holder for leaving the implantable article in the patient once the implantable article deployment member moves to the extended position; and
a separator for extricating the implantable article from the surgical device.
2. A surgical device according to claim 1 wherein the implantable article deployment member is capable of moving along a substantially helical path.
3. A surgical device according to claim 1 further including a means for collapsing the tubular tissue structure about the immobilizer.
4. A surgical device according to claim 1 further including an inflatable member for positioning the device relative to the tubular tissue structure.
5. A surgical device according to claim 1 wherein the actuator comprises a rotatable member.
6. A surgical device according to claim 1 wherein the actuator comprises a slidable guide member with a helical cam groove and a cam follower associated with the implantable article deployment member.
7. A surgical device according to claim 1 wherein the immobilizer has an axis and the path of the implantable article deployment member is substantially semi-circular about the axis of the immobilizer.
8. A surgical device according to claim 7 wherein the implantable article deployment member includes a semi-circular portion having a radius approximately the radius of the path about the axis of the immobilizer, the semi-circular portion having a leading end and a trailing end,
an elongate member projecting substantially perpendicular to the semi-circular portion from the trailing end, the elongate member having an axis, and
the actuator comprises a mechanical linkage comprised of a series of gears for affording rotation about two distinct axes.
9. A surgical device according to claim 1 wherein the implantable article deployment member is composed of a shape memory material capable of resiliently deflecting into a predetermined shape during movement from the retracted toward the extended position.
10. A surgical device according to claim 1 wherein the tubular tissue structure comprises the urethra of a female, the immobilizer is sized and shaped to be placed within the interior of the urethra,
the surgical instrument further comprises a stabilizer sized and shaped to be inserted in the vagina.
11. A surgical device according to claim 1 wherein the actuator comprises gears, detents and grooves.
12. A surgical device according to claim 1 wherein the actuator comprises a gear and a predetermined shaped gear track.
13. A surgical device according to claim 1 wherein the implantable article comprises a suture having a dart associated with a leading end thereof, the dart having a shoulder surface,
the implantable article deployment member having an internal passageway affording passage of the suture, a distal end sized and shaped to engage the shoulder surface of the dart to drive the dart along the path of the implantable article deployment member.
14. A surgical device according to claim 13 wherein the holder includes dart receiving surfaces for engaging surfaces of the dart to hold the dart and suture in the extended position while the implantable article deployment member retracts to the retracted position leaving the suture in the extended position.
15. A surgical device according to claim 1 wherein the separator includes means for cutting the implantable article in situ after the implantable article deployment member moves from the retracted to the extended position.
16. A surgical device for placing an implantable article about a tubular tissue structure comprising:
an elongate tubular tissue structure immobilizer sized and shaped to be placed within the tubular tissue structure,
an implantable article deployment member movable about the immobilizer between a retracted position and an extended position, wherein the implantable article deployment member is composed of a shape memory material capable of resiliently deflecting into a predetermined shape during movement from the retracted toward the extended position;
an actuator for moving the implantable article deployment member between the retracted and extended positions;
a holder for leaving the implantable article in the patient once the implantable article deployment member moves to the extended position; and
a separator for extricating the implantable article from the surgical device.
17. A surgical device according to claim 16 wherein the implantable article deployment member is capable of moving along a substantially helical path.
18. A surgical device according to claim 16 further including a means for collapsing the tubular tissue structure about the immobilizer.
19. A surgical device for placing an implantable article about a tubular tissue structure comprising:
an elongate tubular tissue structure immobilizer sized and shaped to be placed within the tubular tissue structure,
an implantable article deployment member movable about the immobilizer between a retracted position and an extended position;
an actuator for moving the implantable article deployment member between the retracted and extended positions;
a holder for leaving the implantable article in the patient once the implantable article deployment member moves to the extended position; and
a separator for extricating the implantable article from the surgical device, the separator including means for cutting the implantable article in situ after the implantable article deployment member moves from the retracted to the extended position.
20. A surgical device according to claim 19 wherein the implantable article deployment member is capable of moving along a substantially helical path.