Abstract: Techniques and systems are provided for attention evaluation by an extended reality system. In some examples, the system determines one or more regions of interest (ROI) for an image displayed to a user. The system may also receive eye tracking information indicating an area of the image that the user is looking at. The system may further generate focus statistics based on the area of the image at which the user is looking at and the one or more ROI; and output the generated focus statistics.

Abstract: Pump systems are described. An example pump system may include a processing unit and a recess configured to receive a pump cartridge. The recess can include a plurality of cartridge engagement slots. The cartridge engagement slots can be configured for removably coupling the pump cartridge. The recess can also include a cartridge-facing surface with a positioning feature slot extending orthogonal to a general plane of the cartridge-facing surface.

Abstract: Pump systems are described. An example pump system may include a processing unit and a recess configured to receive a pump cartridge. The recess can include a plurality of cartridge engagement slots. The cartridge engagement slots can be configured for removably coupling the pump cartridge. The recess can also include a cartridge-facing surface with a positioning feature slot extending orthogonal to a general plane of the cartridge-facing surface.

Abstract: Examples are described of marking specified regions of stored image frame buffer data in an image frame buffer. An imaging system can read the specified regions of the image frame buffer to identify whether the marking has been overwritten or not. The imaging system can thus efficiently identify how much of the image frame buffer has been overwritten with data from a new image frame. Based on this, the imaging system can retrieve partial image frame data from the image frame buffer and can process the partial image frame data, for instance to composite the partial image frame data with virtual content and/or to perform distortion compensation. The processed partial image frame data can be uploaded to a display buffer and displayed by a display, either as-is or once more of the frame is captured and processed. The imaging system can also perform auto-exposure using the partial image frame data.

Abstract: Examples are described of marking specified regions of stored image frame buffer data in an image frame buffer. An imaging system can read the specified regions of the image frame buffer to identify whether the marking has been overwritten or not. The imaging system can thus efficiently identify how much of the image frame buffer has been overwritten with data from a new image frame. Based on this, the imaging system can retrieve partial image frame data from the image frame buffer and can process the partial image frame data, for instance to composite the partial image frame data with virtual content and/or to perform distortion compensation. The processed partial image frame data can be uploaded to a display buffer and displayed by a display, either as-is or once more of the frame is captured and processed. The imaging system can also perform auto-exposure using the partial image frame data.

Abstract: Examples are described of marking specified regions of stored image frame buffer data in an image frame buffer. An imaging system can read the specified regions of the image frame buffer to identify whether the marking has been overwritten or not. The imaging system can thus efficiently identify how much of the image frame buffer has been overwritten with data from a new image frame. Based on this, the imaging system can retrieve partial image frame data from the image frame buffer and can process the partial image frame data, for instance to composite the partial image frame data with virtual content and/or to perform distortion compensation. The processed partial image frame data can be uploaded to a display buffer and displayed by a display, either as-is or once more of the frame is captured and processed. The imaging system can also perform auto-exposure using the partial image frame data.

Abstract: Pump systems are described. An example pump system may include a processing unit and a recess configured to receive a pump cartridge. The recess can include a plurality of cartridge engagement slots. The cartridge engagement slots can be configured for removably coupling the pump cartridge. The recess can also include a cartridge-facing surface with a positioning feature slot extending orthogonal to a general plane of the cartridge-facing surface.

Abstract: Pump cassettes, infusion systems, and methods are described. An example infusion pump system may include a cassette recess with one or more valve actuators that extend through a surface of the cassette recess to operate a corresponding valve in a fluid passageway of a pump cassette mounted in the cassette recess. The valve actuator may include a base portion, a shaft extending from the base portion through the surface, and a spring disposed on the shaft and extending along a portion of the shaft. The spring may be disposed interior to the back surface. The system may include first and second valve actuators configured to operate corresponding first and second valves located on opposing sides of a pump chamber of the fluid passageway. A piston may be configured to cooperate with the first and second valve actuators to pump a fluid through the fluid passageway.

Abstract: Pump cassettes, infusion systems, and methods are described. An example pump cassette may include a rigid body comprising a frame portion, a base portion, a compliant membrane disposed substantially therebetween, and two opposing longitudinal edge sections. The rigid body may include a controllable fluid pathway defined in part by the compliant membrane and extending from an inlet port to an outlet port. The pump cassette may include a slider coupled to the two opposing longitudinal edge sections and longitudinally articulable with respect to the rigid body.

Abstract: Pump cassettes, infusion systems, and methods are described. An example pump cassette may include a rigid body including two opposing edge sections, an inlet port, an outlet port, and a controllable fluid pathway extending from the inlet port to the outlet port. The pump may include a slider coupled to the two opposing edge sections and articulable with respect to the rigid body; and a flow stop valve operably coupled to the controllable fluid pathway.

Abstract: Pump cassettes, infusion systems, and methods are described. An example pump cassette may include a rigid body comprising a frame portion, a base portion, a compliant membrane disposed substantially therebetween, and two opposing longitudinal edge sections. The rigid body may include a controllable fluid pathway defined in part by the compliant membrane and extending from an inlet port to an outlet port. The pump cassette may include a piston disposed at least partially within the rigid body such that movement of the piston varies a volume of a pump chamber defined within the controllable fluid pathway.

Abstract: Pump cassettes, infusion systems, and methods are described. An example pump cassette may include a rigid body comprising a frame portion, a base portion, a compliant membrane disposed substantially therebetween, two opposing edge sections, and an interface-facing surface. The rigid body may include a positioning feature arranged substantially orthogonal to a general plane of the interface-facing surface. The pump cassette may include a slider coupled to the two opposing edge sections and longitudinally articulable with respect to the rigid body.

Abstract: A syringe adapter for holding various sizes of syringes. A syringe includes a tip, a barrel, a plunger, a flange, and a syringe axis extending from the tip to the plunger. An example syringe holder attaches to a fluid delivery system and includes a syringe clamp. The syringe holder holds a syringe stationary in the syringe clamp. The syringe clamp is offset from the fluid delivery system such that the syringe, or connections to the syringe, does not interfere with other components of the fluid delivery system. The syringe holder may include a support bar, which the syringe clamp can slide along. Alternatively, the syringe clamp may be rotatable.

Abstract: A connector valve for use with an infusion set. The connector valve includes a body defining a chamber. The body includes a primary inlet, a secondary inlet, and an outlet. The connector valve includes a compressible member within the chamber that compresses from an uncompressed state to a compressed state. The connector valve includes a resilient member within the chamber that engages with the compressible member. The resilient member moves from an open configuration when the compressible member is in the uncompressed state to an occluding configuration when the compressible member is in the compressed state. The resilient member in the open configuration permits a bidirectional primary fluid flow between the primary inlet and the outlet, and the resilient member in the occluding configuration permits a bidirectional secondary fluid flow between the secondary inlet and the outlet, and unidirectional primary fluid flow from the primary inlet to the outlet.

Abstract: A syringe adapter for holding various sizes of syringes. A syringe includes a tip, a barrel, a plunger, a flange, and a syringe axis extending from the tip to the plunger. An example syringe holder attaches to a fluid delivery system and includes a syringe clamp. The syringe holder holds a syringe stationary in the syringe clamp. The syringe clamp is offset from the fluid delivery system such that the syringe, or connections to the syringe, does not interfere with other components of the fluid delivery system. The syringe holder may include a support bar, which the syringe clamp can slide along. Alternatively, the syringe clamp may be rotatable.

Abstract: A connector valve for use with an infusion set. The connector valve includes a body defining a chamber. The body includes a primary inlet, a secondary inlet, and an outlet. The connector valve includes a compressible member within the chamber that compresses from an uncompressed state to a compressed state. The connector valve includes a resilient member within the chamber that engages with the compressible member. The resilient member moves from an open configuration when the compressible member is in the uncompressed state to an occluding configuration when the compressible member is in the compressed state. The resilient member in the open configuration permits a bidirectional primary fluid flow between the primary inlet and the outlet, and the resilient member in the occluding configuration permits a bidirectional secondary fluid flow between the secondary inlet and the outlet, and unidirectional primary fluid flow from the primary inlet to the outlet.

Abstract: Pump cassettes, infusion systems, and methods are described. An example pump cassette may include a rigid body comprising a frame portion, a base portion, a compliant membrane disposed substantially therebetween, and two opposing longitudinal edge sections. The rigid body may include a controllable fluid pathway defined in part by the compliant membrane and extending from an inlet port to an outlet port. The pump cassette may include a slider coupled to the two opposing longitudinal edge sections and longitudinally articulable with respect to the rigid body.

Abstract: Pump cassettes, infusion systems, and methods are described. An example infusion pump system may include a cassette recess with one or more valve actuators that extend through a surface of the cassette recess to operate a corresponding valve in a fluid passageway of a pump cassette mounted in the cassette recess. The valve actuator may include a base portion, a shaft extending from the base portion through the surface, and a spring disposed on the shaft and extending along a portion of the shaft. The spring may be disposed interior to the back surface. The system may include first and second valve actuators configured to operate corresponding first and second valves located on opposing sides of a pump chamber of the fluid passageway. A piston may be configured to cooperate with the first and second valve actuators to pump a fluid through the fluid passageway.

Abstract: Pump cassettes, infusion systems, and methods are described. An example pump cassette may include a rigid body comprising a frame portion, a base portion, a compliant membrane disposed substantially therebetween, and two opposing longitudinal edge sections. The rigid body may include a controllable fluid pathway defined in part by the compliant membrane and extending from an inlet port to an outlet port. The pump cassette may include a piston disposed at least partially within the rigid body such that movement of the piston varies a volume of a pump chamber defined within the controllable fluid pathway.

Abstract: Pump cassettes, infusion systems, and methods are described. An example pump cassette may include a rigid body comprising a frame portion, a base portion, a compliant membrane disposed substantially therebetween, two opposing edge sections, and an interface-facing surface. The rigid body may include a positioning feature arranged substantially orthogonal to a general plane of the interface-facing surface. The pump cassette may include a slider coupled to the two opposing edge sections and longitudinally articulable with respect to the rigid body.