Abstract: Methods and apparatus for making an anastomotic connection between an opening at an end of a graft conduit and an aperture in a side wall of a body tissue conduit using a hollow connector assembly are provided, wherein the cross-sectional area of the anastomotic connection is larger than that of the graft conduit. The tissue about the opening is introduced about and retained by first members of a distal portion of the connector assembly held by a loading tool. A delivery tool then collapses a proximal portion defined by second members of the connector assembly and delivers the second members into the lumen of the body tissue conduit via the aperture. Upon inserting the second members into the body tissue conduit, the delivery tool is disemployed and the second members expand such that they press against the interior wall of the body tissue conduit and such that the first members are held within the aperture against a medial wall of the body tissue conduit.

Abstract: An eyelet terminal comprises a ring with a plurality of tabs formed around the inner circumference thereof, the tabs projecting out of the plane of the ring and adapted to interlockingly engage tabs of identical terminals to secure the terminals to one another in a stacked, coaxial configuration prior to the terminals being bolted to a surface. A terminal may be secured to an adjacent terminal in any of several alternative relative angular positions. In one embodiment, the tabs are canted about a radially extending line to lie in a plane oblique to the plane of the ring and project below a lower surface of the ring such that sharp edges of the tabs are urged into contact with the surface to which the terminal stack is bolted. In another embodiment, the tabs are stair-step shaped and extend only above an upper surface of the ring.

Abstract: A fiber optical probe for colorimetric measurement of chemical properties suitable for the insertion into living tissue. A chemical to be colorimetrically measured is introduced into a sample chamber on the side of the probe near the probe tip. A colorimetric substance contained in the sample chamber changes colors in response to chemical properties of the chemical to be colorimetrically measured, thereby changing the amount of light transmitted through the sample chamber by the optical fibers.