Electric or manual geared suturing device
A suturing system for a scope having a scope shaft comprises a drive shaft to extend along the scope shaft, a mounting ring to mount to a distal end of the scope shaft to receive the drive shaft, a pinion gear mounted to a distal end of the drive shaft, a ring gear rotatably mounted to the mounting ring in engagement with the pinion gear, and a needle mounted to the ring gear.
1 . A suturing system for coupling to a scope having a scope shaft, the suturing system comprising:
a drive shaft configured to extend along the scope shaft, the drive shaft configured to rotate;
a mounting ring configured to mount to a distal end of the scope shaft to receive the drive shaft, the mounting ring comprising:
an annular body defining an opening to allow features of an end face of an endoscope access through the mounting ring; and
a socket configured to receive a stop from a working channel of the scope shaft when the suturing system is coupled to the scope shaft;
a pinion gear mounted to a distal end of the drive shaft;
a ring gear rotatably mounted to the mounting ring in engagement with the pinion gear, wherein the pinion gear is configured to rotate the ring gear about the mounting ring when the drive shaft is rotated; and
a needle mounted to the ring gear, the needle shaped to receive the stop from the socket.
2 . The suturing system of claim 1 , further comprising an electric motor connected to a proximal end of the drive shaft.
3 . The suturing system of claim 1 , further comprising a hand crank connected to a proximal end of the drive shaft.
4 . The suturing system of claim 1 , further comprising the scope shaft, wherein the scope shaft comprises a first working channel.
5 . The suturing system of claim 4 , further comprising a suction device connected to the first working channel.
6 . The suturing system of claim 5 , further comprising a tube defining a second working channel for the drive shaft, the tube extending alongside an exterior of the scope shaft.
7 . The suturing system of claim 6 , wherein the pinion gear is mounted outside the mounting ring.
8 . The suturing system of claim 4 , further comprising a forceps positioned within the first working channel.
9 . The suturing system of claim 4 , further comprising a second working channel extending through the scope shaft through which the drive shaft extends.
10 . The suturing system of claim 4 , wherein the mounting ring further comprises an end plate having an opening configured to align with the first working channel to rotationally align the scope shaft and the mounting ring.
11 . The suturing system of claim 1 , wherein:
the drive shaft is configured to extend along an exterior of the scope shaft; and
the pinion gear is mounted within the mounting ring.
12 . The suturing system of claim 1 , wherein the socket comprises a cylindrical body having an upper portion and a lower portion configured to hold a stop and between which is disposed a pathway for the needle.
13 . The suturing system of claim 1 , wherein the needle comprises an anchor socket configured to receive the stop from the socket of the mounting ring.
14 . The suturing system of claim 13 , wherein the needle comprises a curved needle body extending along a helical path from the ring gear toward a center of the scope shaft to align with the socket in the circumferential direction relative to a central axis of the mounting ring.
15 . The suturing system of claim 13 , further comprising a suture tube extendable from the scope shaft.
16 . The suturing system of claim 15 , further comprising:
a stop configured to seat in the socket and the anchor socket, the stop connected to a strand of suture material extending from the suture tube.
17 . The suturing system of claim 15 , wherein the suture tube comprises an anchor holder configured to be inserted into the socket of the mounting ring.
18 . The suturing system of claim 1 , further comprising a retaining ring to hold the ring gear with the mounting ring, wherein the mounting ring comprises a seat upon which the mounting ring mounts to trap the ring gear between the retaining ring and the mounting ring.
19 . A system for endoscopic suturing comprising:
a scope shaft extending along a central longitudinal axis, the scope shaft comprising a proximal end portion and a distal end face, wherein the distal end face comprises a working channel and an imaging lens;
an electric motor coupled to the scope shaft at the proximal end portion;
a drive shaft extending along an exterior of the scope shaft from the electric motor to proximate the distal end face;
a mounting ring configured to attach to the distal end face of the scope shaft, the mounting ring comprising:
an opening to allow the imaging lens to view through the mounting ring; and
a socket for receiving a suture stop from the working channel of the scope shaft;
a suturing element movably mounted to the mounting ring to move distal of the distal end face, the suturing element comprising a helically shaped needle having a tip socket configured to hold a suture stop; and
a gear system connecting the drive shaft and the suturing element;
wherein the gear system is configured to convert rotational movement of the drive shaft into a rotational suturing stroke of the suturing element so that the suturing element can receive the suture stop from the socket.