Method of chirurgical treatment using a surgical anchor device
View Patent ↗A surgical anchor device for being anchored on the mucous membrane of the inner wall of the intestine, the device having a temporary anchor element presenting anchoring that can be modified in a controlled manner and having a first substantially cylindrical multiply-perforated wall presenting properties of radial elasticity whereby the first wall presents an outer diameter that can be varied in controlled manner, wherein a portion of the inner surface of the first wall is lined with an independent leakproof inner sheath having only its longitudinal ends fastened to the anchor element to define a suction chamber between the inner sheath and the first wall, the temporary anchor element being coupled to a flexible or semi-rigid tube extending outside the anchor element, an open end of the injection-suction tube opening out into the suction chamber enabling air to be injected into or sucked out from the suction chamber.
1. A method of protecting an anastomosis, the method comprising:
introducing an anchor device to a passage through an orifice of a subject, the anchor device comprising:
an anchor element comprising:
a first hollow longitudinal element including a perforated first cylindrical wall and comprising a material capable of being compressed radially into a radially retracted position and capable of adopting a radially expanded position upon release of radial compression,
a proximal leak tight fastener radially inward and outward of the first hollow longitudinal element;
a distal leak tight fastener radially inward and outward of the first hollow longitudinal element;
an inner sheath inside said perforated first cylindrical wall, said inner sheath being fastened to the proximal and the distal leak tight fasteners; and
a suction chamber at least partially defined by the proximal leak tight fastener, the distal leak tight fastener, said perforated first cylindrical wall and the inner sheath; and
an injection-suction tube comprising:
a first end in the suction chamber;
a segment extending through the proximal leak tight fastener; and
a second end configured to extend out of the orifice;
routing the anchor device to an anchor site upstream from the anastomosis in a gastrointestinal tract;
during the routing of the anchor device, holding the anchor element in the radially retracted position;
allowing the anchor element to expand from the radially retracted position towards the radially expanded position to adopt an anchor position against an intestinal wall of the gastrointestinal tract at the anchor site.
2. The method of claim 1 , further comprising applying negative pressure to the second end of the injection-suction tube.
3. The method of claim 1 , further comprising injecting fluid into the second end of the injection-suction tube.
4. The method of claim 1 , comprising slowing down or interrupting migration of the anchor element in an event of an anastomotic fistula appearing to allow the anastomotic fistula to heal before the anchor element migrates to a location of the anastomotic fistula.
5. The method of claim 1 , wherein the anchor device further comprises an outer sheath coupled to the anchor element extending outside the anchor element.
6. The method of claim 1 , wherein the anastomosis is in a large intestine, a colon, a rectum or an anal canal.
7. The method of claim 1 , wherein the first end of the injection-suction tube comprises a perforated tube portion.
8. The method of claim 1 , wherein the second end of the injection-suction tube is reversibly connectable to a fluid transfer device configured to inject or suck air or liquid into the injection-suction tube, the second end comprising:
a connection endpiece including a shutter device, and
a vacuum indicator device suitable for indicating a degree of vacuum in the suction chamber.
9. The method of claim 1 , wherein the anchor element comprises a stent-type enteral prosthesis comprising a mesh of spiral-wound metal, elastomer wires, or yarns.
10. The method of claim 1 , wherein radial expansion properties of the anchor element are controllable as a function of temperature.
11. The method of claim 1 , wherein radial expansion properties of the anchor element are controllable mechanically by an independent instrument.
12. The method of claim 1 , wherein the anchor element further comprises a yarn coupled to the first hollow longitudinal element.
13. The method of claim 1 , wherein said first hollow longitudinal element including the perforated first cylindrical wall comprises:
a stent having flared ends and comprising the material capable of being compressed radially into the radially retracted position and capable of adopting the radially expanded position upon release of the radial compression, wherein radial expansion properties of the anchor element are controllable as a function of temperature or mechanically by an independent instrument, wherein the proximal leak tight fastener is radially inward and outward of the stent, wherein the distal leak tight fastener is radially inward and outward of a porous stent, wherein the inner sheath is radially inward of the stent; and wherein the anchor device further comprises:
a yarn attached to at least one flared end of the stent, and
an outer sheath coupled to the anchor element, wherein the outer sheath has a length not less than a distance between the anchor site and the orifice, and
wherein the method comprises:
during the routing of the anchor device, holding the anchor element in the radially retracted position; and
allowing the anchor element to expand from the radially retracted position towards the radially expanded position to adopt an anchor position against the intestinal wall at the anchor site, and
further comprising sucking or injecting air in said suction chamber and between said stent and said intestinal wall, through said injection-suction tube and through a perforation of said stent so as to enable control of a position of said stent with respect to the intestinal wall without changing a radial extension of said stent, in attracting said intestinal wall against said stent by the sucking of air from said suction chamber and between said stent and said intestinal wall through said injection-suction tube and through the perforation of said stent, thereby creating a depression between said stent and said intestinal wall, and, respectively, in separating said intestinal wall from said stent by the injecting of air in said suction chamber and between said stent and said intestinal wall through said injection-suction tube and through the perforation of said stent.
14. A method of protecting an anastomosis, the method comprising:
introducing an anchor device to a passage through an orifice of a subject, the anchor device comprising:
an anchor element comprising:
a proximal leak tight fastener;
a distal leak tight fastener;
an inner sheath fastened to the proximal and the distal leak tight fasteners; and
a suction chamber at least partially defined by the proximal leak tight fastener, the distal leak tight fastener, and the inner sheath; and
an injection-suction tube comprising:
a first end in the suction chamber;
a segment extending through the proximal leak tight fastener; and
a second end configured to extend out of the orifice;
routing of the anchor device in a radially retracted position to an anchor site upstream of the anastomosis in a gastrointestinal tract; and
applying negative pressure to the second end of the injection-suction tube so as to attract the wall of the intestine against the anchor element in a radially expanded position to adopt the anchor position against the intestinal wall of the gastrointestinal tract at the anchor site.
15. The method of claim 14 , wherein the anchor device further comprises an outer sheath coupled to the anchor element extending outside the anchor element.
16. The method of claim 14 , wherein said anchor device comprises:
a stent having flared ends and comprising a material capable of being compressed radially into the radially retracted position and capable of adopting the radially expanded position upon release of radial compression, wherein radial expansion properties of the anchor element are controllable as a function of temperature or mechanically by an independent instrument, wherein the proximal leak tight fastener is radially inward and outward of the stent, wherein the distal leak tight fastener is radially inward and outward of a porous stent, wherein the inner sheath is radially inward of the stent; and wherein the anchor device further comprises:
a yarn coupled to the stent, and
an outer sheath coupled to the anchor element, wherein the outer sheath has a length not less than a distance between the anchor site and the orifice, and
wherein the method comprises:
during the routing of the anchor device, holding the anchor element in the radially retracted position; and
allowing the anchor element to expand from the radially retracted position towards the radially expanded position to adopt an anchor position against the intestinal wall at the anchor site, and
further comprising sucking or injecting air in said suction chamber and between said stent and said intestinal wall, through said injection-suction tube and through a perforation of said stent so as to enable control of a position of said stent with respect to the intestinal wall without changing the radial extension of said stent, in the attracting of said intestinal wall against a first wall by the sucking of air from said suction chamber and between said stent and said intestinal wall through said injection-suction tube and through the perforation of said stent, thereby creating a depression between said first wall and said intestinal wall, and, respectively, in the separating of said intestinal wall from said stent by the injecting of air in said suction chamber and between said stent and said intestinal wall through said injection-suction tube and through the perforation of said stent.