Anastomotic device
AssigneeEthicon Endo-Surgery, Inc.
InventorFederico Bilotti
Life of this patent
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Abstract
The present invention relates to an anastomotic device (10) comprising a first ring (20) having a first contact surface (21) and a second ring (30) having a second contact surface (31). The rings (20, 30) are suitable to be approached in the axial direction (X) such as to move said contact surfaces (21; 31) towards each other. The anastomotic device is characterized in that the contact surfaces (21, 31) have an undulated shape relative to a plane (π) perpendicular to the axis (X) of the rings (20, 30). According to another aspect thereof, the invention also relates to an apparatus (60) for the implantation of the anastomotic device (10). According to a further aspect thereof, the invention relates to a kit comprising an anastomotic device (10) and an apparatus (60) for the implantation of the same.
Claims29
An anastomotic device (10) comprising:
- a first ring (20) having a first contact surface (21);
- and
- a second ring (30) having a second contact surface (31);
- said rings (20, 30) being suitable to be approached in the axial direction (X) such as to move said contact surfaces (21, 31) towards each other;
- characterized in that said contact surfaces (21, 31) have an undulated shape relative to a plane (π) perpendicular to the axis (X) of said rings (20, 30).
The anastomotic device (10) according to the preceding claim, wherein the contact surfaces (21, 31) of the rings (20, 30) lay on a curved surface.
The anastomotic device (10) according to any preceding claim, wherein the contact surfaces (21, 31) comprise inner edges (22, 32) that are defined by three-dimensional loops having a greater length than the plane curve (32′), which represents the projection thereof in the direction of the axis X.
The anastomotic device (10) according to any preceding claim, wherein the contact surfaces (21, 31) comprise knurlings (33) to increase friction.
The anastomotic device (10) according to any preceding claim further comprising coupling means (40) suitable to generate and maintain a clamping force in the axial direction between the first ring (20) and the second ring (30).
The anastomotic device (10) according to the preceding claim, wherein the coupling means (40) are of a snap type.
The anastomotic device (10) according to the preceding claim, wherein the coupling means (40) comprise at least one seat (42) that is formed on the first ring (20), having an axial development and being suitable to accommodate said at least one pin (43).
The anastomotic device (10) according to the preceding claim, wherein the seat (42) comprises elastic tabs (45) that are suitable to engage the teeth (44) and slide along the operating coupling tract (46) only in one direction.
The anastomotic device (10) according to any preceding claim, further comprising holes (52, 53) suitable for the guide wire to pass therethrough, which are required for carrying out the operation of endoluminal or laparoscopic implantation.
The anastomotic device (10) according to the preceding claim, wherein the holes (52, 53) are formed on both rings (20, 30) such that the rings (20, 30) are allowed to be properly approached to each other simply by sliding along the guide wires.
The anastomotic device (10) according to any preceding claim, wherein the contact surfaces (21, 31) of the two rings (20 and 30) are mutually inclined.
The anastomotic device (10) according to the preceding claim, wherein the mutual inclination of the contact surfaces (21, 31) is such that a spacing is provided between the contact surfaces (21, 31), which is variable in the radial direction.
The anastomotic device (10) according to any preceding claim, wherein on one of the rings (20, 30) there is arranged a knife (50).
The anastomotic device (10) according to the preceding claim, wherein the knife (50) is arranged at the inner edge (22, 32) of the contact surface (21, 31).
The anastomotic device (10) according to the preceding claim, wherein the knife (50) that is placed on one of the rings (20, 30) and the inner edge (32, 22) of the contact surface (31, 21) of the other ring (30, 20) act as an annular shear.
The anastomotic device (10) according to any preceding claim, which is at least partially made of a bio-absorbable or biofragmentable material.
The apparatus (60) for implanting an anastomotic device (10) according to any preceding claim.
The implant apparatus (60) according to the preceding claim, which is suitable to provide an even thrust to the ring (20, 30) of the anastomotic device (10) that is placed in the proximal position.
The implant apparatus (60) according to the preceding claim comprising a thrust surface (61) that is totally complementary to a service surface (23) opposite the support surface (21) of the proximal ring (20).
The implant apparatus (60) according to the preceding claim further comprising holes (63) for guide wires to be passed therethrough.
Dependencies are inferred from the claim text.