Compression anastomosis system, and use thereof
A compression anastomosis system comprises matching first and second compression ring devices ( 1, 40, 50, 60, 70, 80, 90 ), each compression ring device configured for adjustment from an elongated delivery configuration suitable for passing through a minimally invasive surgical instrument to a deployed radially expanded configuration dimensioned to circumferentially abut an inner wall of a body lumen. The compression rings comprise coupling elements ( 20, 41, 56, 57 ) for coupling the rings together in a face-to-face compression anastomosis configuration, and each compression ring device has a radially outward facing surface ( 10 ) comprising tissue anchors ( 12, 58 ) configured to anchor the ring to the wall of the body lumen when the ring is deployed in the body lumen. A method of forming a compression anastomosis in a body lumen such as a colon is also described.
1 . A compression anastomosis system comprising matching first and second compression ring devices ( 1 , 40 , 50 , 60 , 70 , 80 , 90 ), each compression ring device configured for adjustment from an elongated delivery closed ring configuration suitable for passing through a lumen of a minimally invasive surgical instrument to a deployed radially expanded closed ring configuration,
wherein the first and second compression ring devices comprise magnetic coupling elements ( 20 , 41 , 56 , 57 ) configured to couple the rings together in a face-to-face compression anastomosis configuration in which configuration a first side face of the first compression ring device faces and is coupled to a second side face of the second compression ring device to compress tissue between the first side face and second side face, and
wherein the first side face of the first compression ring device and the second side face of the second compression ring device each comprise a plurality of tissue anchors
configured to anchor the first and second the compression ring devices to a wall of a body lumen when each ring is deployed in the body lumen.
2 . The compression anastomosis system according to claim 1 , in which all or part of each compression ring device is configured to biodegrade in-vivo.
3 . The compression anastomosis system according to claim 1 , in which one or more parts of the or each compression ring device is configured to biodegrade in-vivo to break the or each compression ring device into a plurality of smaller parts.
4 . The compression anastomosis system according to claim 1 , in which the compression ring is dimensioned in the elongated delivery closed ring configuration to pass through a lumen having a diameter of no greater than 15 mm and dimensioned in the deployed closed ring configuration to circumferentially abut an inner wall of a body lumen.
5 . The compression anastomosis system according to claim 1 , in which each compression ring device comprises a central spoke element configured to assist in the deployment of the compression ring device, and fold when the compression ring device is compressed into a delivery configuration.
6 . The compression anastomosis system according to claim 1 , in which the first and second compression ring devices each comprise an inflatable ring ( 2 ) whereby inflation of the inflatable annular ring deploys the compression ring device into the radially expanded deployed configuration to circumferentially abut an inner wall of a body lumen.
7 . The compression anastomosis system according to claim 1 , in which the coupling elements comprise a series of latching arms ( 20 ) mounted to and extending axially from the first compression ring device, and a formation ( 22 , 60 ) on the second compression ring device configured to receive an end ( 21 ) of the latching arm to lock the first and second compression ring devices together in a compression anastomosis configuration.
8 . The compression anastomosis system according to claim 1 , in which the coupling elements comprise magnets of one polarity ( 56 ) disposed on a side of the first compression ring device and corresponding magnets of a second polarity ( 57 ) disposed on a side of the second compression ring device.
9 . The compression anastomosis system according to claim 1 , in which the or each anastomosis ring comprises:
an annular hollow tube that is biased into a ring shape and resiliently deformable; and
a plurality of ring segments disposed within the annular hollow tube,
wherein the anastomosis ring is configured to be resiliently deformed into an elongated delivery configuration suitable for delivery in a minimally invasive surgical instrument and to self-deploy into a radially expanded configuration suitable to fully or at least partially circumferentially abut an inner wall of a body lumen upon release from the surgical instrument.
10 . The compression anastomosis system according to claim 9 , in which one or more of the ring segments comprise a magnetic or magnetisable material to provide the coupling element for coupling two rings together.
11 . The compression anastomosis system according to claim 9 , in which one side of the or each ring segment comprises a magnetic or magnetisable material of a first polarity and an opposite side of the ring segments comprises a magnetic or magnetisable material of a second polarity.
12 . The compression anastomosis system according to claim 9 , in which the annular hollow tube comprises a resiliently deformable polymeric material.
13 . The compression anastomosis system according to claim 9 , in which one or more of the ring segments comprise an inner core and an outer sheath, in which the inner core comprises the magnetic or magnetisable material.
14 . The compression anastomosis system according to claim 13 , in which the outer sheath comprises the tissue anchors and in which the tissue anchors and annular hollow tube are configured such that upon assembly of the anastomosis ring the tissue anchors project through the annular hollow tube to provide tissue anchors on a side face of the ring.
15 . The compression anastomosis system according to claim 1 , in which the tissue anchors comprise:
anchors disposed on the first side face of the first compression ring device; and
anchors disposed on the second side face of the second compression ring device.
16 . The compression anastomosis system according to claim 13 , in which the outer sheath is configured to shield a magnetic force on one side of the inner core.
17 . The compression anastomosis system according to claim 1 , in which the or each anastomosis ring is configured to be adjustable from an open ring formation and a closed ring formation.
18 . The compression anastomosis system according to claim 9 , comprising a coupling insert configured to couple to the coupling elements of matching first and second compression ring devices to couple the rings together.
19 . The compression anastomosis system according to claim 15 , in which the outer anchors of one ring are configured to interdigitate with the outer anchors of a matching ring when the two rings couple together to form a compression anastomosis.
20 . A compression anastomosis system comprising matching first and second compression ring devices ( 1 , 40 , 50 , 60 , 70 , 80 , 90 ), each compression ring device configured for adjustment from an elongated delivery configuration suitable for passing through a lumen of a minimally invasive surgical instrument to a deployed radially expanded configuration,
wherein the compression rings comprise coupling elements ( 20 , 41 , 56 , 57 ) for coupling the rings together in a face-to-face compression anastomosis configuration, and
wherein each compression ring device comprising tissue anchors ( 12 , 58 ) configured to anchor the ring to a wall of a body lumen when the ring is deployed in the body lumen,
in which the or each anastomosis ring in the deployed radially expanded configuration comprises:
an annular tube that is biased into a ring shape and resiliently deformable; and
a plurality of ring segments disposed within the annular tube.
21 . A compression anastomosis system comprising matching first and second compression ring devices ( 1 , 40 , 50 , 60 , 70 , 80 , 90 ),
wherein each anastomosis ring is configured to self-deploy from an elongated delivery configuration suitable for delivery in a minimally invasive surgical instrument to a radially expanded configuration,
wherein each anastomosis ring in the radially expanded configuration comprises:
an annular tube that is biased into a ring shape and resiliently deformable; and
a plurality of unconnected ring segments disposed within the annular tube.
22 . A compression anastomosis system comprising matching first and second compression ring devices ( 1 , 40 , 50 , 60 , 70 , 80 , 90 ),
wherein each anastomosis ring is configured to self-deploy from an elongated delivery configuration suitable for delivery in a minimally invasive surgical instrument to a radially expanded configuration,
wherein the or each anastomosis ring in the radially expanded configuration comprises:
an annular tube that is biased into a ring shape and resiliently deformable; and
a plurality of unconnected ring segments disposed within the annular tube,
wherein each ring segment is magnetic.
23 . A compression anastomosis system comprising matching first and second compression ring devices ( 1 , 40 , 50 , 60 , 70 , 80 , 90 ),
wherein each anastomosis ring is configured to self-deploy from an elongated delivery configuration suitable for delivery in a minimally invasive surgical instrument to a radially expanded configuration,
wherein the or each anastomosis ring in the radially expanded configuration comprises:
an annular tube that is biased into a ring shape and resiliently deformable; and
a plurality of unconnected ring segments disposed within the annular tube,
wherein each segment is mounted in a sheath, wherein the sheath comprises tissue anchors that extend through the annular tube to present the tissue anchors on the surface of the or each anastomosis ring.