Abstract: Embodiments of a micro-vitreoretinal trocar blade may have a top surface and a bottom surface that converge to form cutting edges. Each of the top surface and bottom surface have a large rounded apex to maximize the area of the blade. Each surface also has concave regions that may form the cutting edges. Advancing the MVR trocar blade into tissue causes the tissue to contact the apexes of the top and bottom surfaces. The apexes draw the tissue into contact with the cutting edges. The cutting edges incise the tissue such that the incision is sized to accommodate a trocar cannula. The geometry of the top surface and bottom surface ensure that the features of the blade do not protrude radially outside of the diametral envelope of the shaft.

Abstract: A counter pressure device for ophthalmic drug delivery. The device includes a handle and a head coupled to a distal end of the handle. The head comprises a curved, concave surface for contacting the conjunctiva and having a notch for removably receiving a cannula. The device minimizes or prevents drug reflux and facilitates drug placement during ophthalmic drug delivery.

Abstract: A support for establishing the sealing length of kinescopes includes a pivotable support. The support is contoured to conform with a contoured neck area of the kinescope whereby the contour references the envelope to a seal plane.

Abstract: An abstract for aligning a CRT envelope and the electron gun mount to be inserted into the envelope neck includes fixed members to which the gun mount and envelope are referenced. The envelope is supported at a desired location and in a particular orientation with respect to the reference members. The envelope is rotated to bring the panel sides into a particular position with respect to the reference members. The envelope and gun mount are thus properly aligned.