Abstract: A suction device comprising a suction tube configured to fluidly couple to a vacuum source and to provide suction at its distal end, an illumination assembly comprising at least one direct light source for emitting light to a target area, an elongated heat sink thermally coupled to the at least one light source and extending along a portion of the suction tube, and a spine extending along the suction tube and overlapping with the elongated heat sink, the spine including an integrated lens, wherein the at least one direct light source and the elongated heat sink are enclosed within a space formed between the spine and a side of the suction tube.

Abstract: A surgical retractor comprising a blade having first and second opposing surfaces, and a handle extending from a proximal end of the blade, wherein the first surface of the blade includes a non-slip texture having a preferential grip in a first direction corresponding to direction of extraction of the surgical retractor from an incision and having a minimal or no grip in a second direction opposite to the first direction and in a third direction transverse to the first and second directions.

Abstract: A surgical retractor comprising a blade having first and second opposing surfaces, and a handle extending from a proximal end of the blade, wherein the first surface of the blade includes a non-slip texture having a preferential grip in a first direction corresponding to direction of extraction of the surgical retractor from an incision and having a minimal or no grip in a second direction opposite to the first direction and in a third direction transverse to the first and second directions.

Abstract: A suction device comprising a suction tube configured to fluidly couple to a vacuum source and to provide suction at its distal end, an illumination assembly comprising at least one direct light source for emitting light to a target area, an elongated heat sink thermally coupled to the at least one light source and extending along a portion of the suction tube, and a spine extending along the suction tube and overlapping with the elongated heat sink, the spine including an integrated lens, wherein the at least one direct light source and the elongated heat sink are enclosed within a space formed between the spine and a side of the suction tube.

Abstract: A surgical retractor comprising a blade having first and second opposing surfaces, and a handle extending from a proximal end of the blade, wherein the first surface of the blade includes a non-slip texture having a preferential grip in a first direction corresponding to direction of extraction of the surgical retractor from an incision and having a minimal or no grip in a second direction opposite to the first direction and in a third direction transverse to the first and second directions.

Abstract: A method is for producing a master template with variable height features for imprint lithography on a device substrate includes providing a layer stack comprising a substrate, an etch stop layer on the substrate, and a pattern layer on the etch stop layer. The method involves creating height gradation in the pattern layer to obtain a height graded pattern layer, forming the master template by providing a pattern comprising a plurality of features into the height graded pattern layer. This method enables the production of features with varying heights, which can be particularly useful in applications such as optical devices where such features may influence the functionality and efficiency of the device.

Abstract: A surgical retractor comprising a blade having first and second opposing surfaces, and a handle extending from a proximal end of the blade, wherein the first surface of the blade includes a non-slip texture having a preferential grip in a first direction corresponding to direction of extraction of the surgical retractor from an incision and having a minimal or no grip in a second direction opposite to the first direction and in a third direction transverse to the first and second directions.

Abstract: This disclosure generally describes methods and systems for fabrication of high-quality surface relief waveguides for eyepieces. In particular, this disclosure describes techniques for manufacturing waveguides having surface relief features, such as diffractive gratings to achieve various optical effects, using nanolithographic imprinting techniques that reduce or eliminate the presence of gaps in the imprinted features through use of optimized drop patterns for dispensing photoresist. Moreover, the disclosure also describes techniques for manufacturing surface relief waveguides having a gradation, e.g., a substantially continuous grade or slope, between zones that have different residual layer thicknesses of the dispensed photoresist, and/or between zones having surface features of different height (or depth). Such gradation can reduce or eliminate adverse optical effects that may be caused by a more abrupt transition between zones, and increase the optical efficiency of the completed waveguide.

Abstract: A surgical retractor comprising a blade having first and second opposing surfaces, and a handle extending from a proximal end of the blade, wherein the first surface of the blade includes a non-slip texture having a preferential grip in a first direction corresponding to direction of extraction of the surgical retractor from an incision and having a minimal or no grip in a second direction opposite to the first direction and in a third direction transverse to the first and second directions.

Abstract: An illuminated suction device comprising a suction tube having a proximal end and a distal tip at a distal end thereof, an illumination assembly comprising at least one direct light source mounted on a flexible circuit and configured to emit light toward a target area external to the distal tip of the suction tube, and at least one heat sinking member extending along a portion of the suction tube, wherein the at least one light source mounted on the flexible circuit is mechanically and thermally connected to the at least one heat sinking member.

Abstract: A surgical retractor, comprising a handle, a blade extending from the handle, wherein the handle has an ergonomic construction configured for hand-held use of the retractor, and wherein the handle is configured to attach to one or more of a fixed frame and a fixed arm of a surgical positioning device.

Abstract: In an example method for forming a variable optical viewing optics assembly (VOA) for a head mounted display, a prepolymer is deposited onto a substrate having a first optical element for the VOA. Further, a mold is applied to the prepolymer to conform the prepolymer to a curved surface of the mold on a first side of the prepolymer and to conform the prepolymer to a surface of the substrate on a second side of the prepolymer opposite the first side. Further, the prepolymer is exposed to actinic radiation sufficient to form a solid polymer from the prepolymer, such that the solid polymer forms an ophthalmic lens having a curved surface corresponding to the curved surface of the mold, and the substrate and the ophthalmic lens form an integrated optical component. The mold is released from the solid polymer, and the VOA is assembled using the integrated optical component.

Abstract: A suction device comprising a suction tube configured to fluidly couple to a vacuum source and to provide suction at its distal end, an illumination assembly comprising at least one direct light source for emitting light to a target area, an elongated heat sink thermally coupled to the at least one light source and extending along a portion of the suction tube, and a spine extending along the suction tube and overlapping with the elongated heat sink, the spine including an integrated lens, wherein the at least one direct light source and the elongated heat sink are enclosed within a space formed between the spine and a side of the suction tube.

Abstract: An illuminated suction device comprising a suction tube having a proximal end and a distal tip at a distal end thereof, an illumination assembly comprising at least one direct light source mounted on a flexible circuit and configured to emit light toward a target area external to the distal tip of the suction tube, and at least one heat sinking member extending along a portion of the suction tube, wherein the at least one light source mounted on the flexible circuit is mechanically and thermally connected to the at least one heat sinking member.

Abstract: A surgical retractor, comprising a handle, a blade extending from the handle, wherein the handle has an ergonomic construction configured for hand-held use of the retractor, and wherein the handle is configured to attach to one or more of a fixed frame and a fixed arm of a surgical positioning device.

Abstract: An illuminated surgical retractor including an outer housing forming a handle and a blade extending from the handle, an illumination assembly comprising at least one direct light source, wherein the outer housing houses therein one or more ferromagnetic components, and wherein the outer housing includes an exterior surface and an inner surface and wherein predetermined portions of one or more of the exterior surface and the inner surface of the outer housing have a shielding material applied thereto to prevent interference of the one or more ferromagnetic components housed within the outer housing with magnetic and electromagnetic signals.

Abstract: A surgical retractor comprising a blade having first and second opposing surfaces, and a handle extending from a proximal end of the blade, wherein the first surface of the blade includes a non-slip texture having a preferential grip in a first direction corresponding to direction of extraction of the surgical retractor from an incision and having a minimal or no grip in a second direction opposite to the first direction and in a third direction transverse to the first and second directions.

Abstract: A surgical retractor comprising a handle and a blade extending at an angle from the handle, an illumination assembly having a plurality of direct light sources provided on the blade, and a cover configured to enclose the illumination assembly, wherein the cover comprises a plurality of openings, each opening corresponding in position to a respective light source of the illumination assembly when the cover is attached to the blade.

Abstract: An illuminated suction device comprising a suction tube having a proximal end and a distal tip at a distal end thereof, an illumination assembly comprising at least one direct light source mounted on a flexible circuit and configured to emit light toward a target area external to the distal tip of the suction tube, and at least one heat sinking member extending along a portion of the suction tube, wherein the at least one light source mounted on the flexible circuit is mechanically and thermally connected to the at least one heat sinking member.

Abstract: An illuminated medical device including an outer housing including a handle, an operative portion extending from the outer housing, and an illumination assembly comprising at least one direct light source oriented to emit light radially away from the operative portion of the medical device at least one reflector configured to reflect light from the at least one direct light source toward a target area external to the outer housing, wherein the at least one direct light source is positioned so as to maintain an air gap between the operative portion and the at least one direct light source.