US 11,751,876 B2
Apparatuses for anastomosis of tubular vessels and related methods
Thomas Edward Jo Hayakawa, Winnipeg (CA); and Daniel William Rickey, Winnipeg (CA)
Assigned to EasyfloMicro Inc., Winnipeg (CA)
Filed by EasyfloMicro Inc., Winnipeg (CA)
Filed on May 19, 2022, as Appl. No. 17/748,968.
Application 17/748,968 is a continuation of application No. 17/291,554, previously published as PCT/IB2020/000358, filed on May 5, 2020.
Claims priority of provisional application 62/844,396, filed on May 7, 2019.
Prior Publication US 2022/0273311 A1, Sep. 1, 2022
Int. Cl. A61B 17/11 (2006.01)
CPC A61B 17/11 (2013.01) [A61B 2017/1107 (2013.01); A61B 2017/1132 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An apparatus for anastomosis of tubular structures comprising two implantable annular bodies, each of the annular bodies comprising:
a first side;
a second side, wherein a central axis extends between the first and second sides;
an inner wall defining a passageway for passing a tubular structure therethrough, wherein the passageway extends along the central axis and is open to the first and second sides;
a plurality of spikes each comprising a base and a pointed free end configured to pierce the tubular structure; and
a plurality of receptacles formed into the second side of the annular body, each of the receptacles being elongate in shape with an axis of extension of the elongate shape extending radially relative to the central axis;
wherein when the annular bodies are assembled together, at least part of one of the annular bodies extends past the second side of the other annular body and engages the other annular body to hold the annular bodies together, the second sides of each of the annular bodies face one another, the central axes of the annular bodies are coaxial, respective bases of each of the spikes of the annular bodies extend from the second side of the annular body towards the opposing annular body with longitudinal axes that are angled relative to the central axis when the spikes are unbiased such that for each of the spikes, the free end is positioned farther from the central axis in a radial direction than the base is to the central axis, and each of the receptacles is configured to receive a corresponding one of the plurality of spikes of the opposing annular body when the annular bodies are assembled together.