Methods and systems for testing Cannabis vaping liquid for liquid vaporizers and vaporizer devices to ensure compliance with product quality are disclosed. The methods and systems allow Cannabis extractors to test Cannabis vaping liquids produced with the Cannabis extract by using a universal attachment couplable with a vaporizer device at various settings of the vaporizer device. The test results can be stored in the cloud accessible by Cannabis extractors, Cannabis-infused product producers, vaporizer device manufacturers, and end users so that the quality data of the vaping liquid and optimum vaporizer settings are easily determined.

A nasal interface apparatus is provided for delivering a gas to a human via a gas supply tube and a pair of tubular nasal inserts. The apparatus includes a manifold hollow body defining an internal chamber, an inlet for fluid communication from the gas supply tube into the internal chamber, an outlet for fluid communication between the internal chamber and the pair of nasal inserts, and an air entrainment port for fluid communication between the internal chamber and a space external to the hollow body. The apparatus also includes a valve member movable relative to the hollow body for varying the size of the open area of the air entrainment port. The open area of the air entrainment port may be varied to regulate a pressure signal detected by a pulse-flow oxygen concentrator (POC).

A dialysis machine (e.g., a peritoneal dialysis (PD) machine) can include a pressure sensor mounted at a proximal end of a patient line made of a distensible material that provides PD solution to a patient through a catheter. During treatment, an occlusion can occur at different locations in the patient line and/or the catheter. When an incremental volume of additional solution is provided to the patient line while the occlusion is present, a change in pressure results. The change in pressure depends on the dimensions and the distensibility of the non-occluded portion of the patient line. If the change in pressure, the incremental volume, the properties related to the distensibility of the patient line, and some of the dimensions of the patient line are known, the location of the occlusion can be inferred. The occlusion type can be inferred based on the determined location.

A method and apparatus are disclosed for determining status of a canister of a topical negative pressure (TNP) system. The method includes the steps of monitoring pressure provided by a pump element of the TNP system, determining at least one characteristic associated with the monitored pressure and determining status of at least one parameter associated with a canister of the TNP system responsive to the determined characteristics.

A catheter (20), which can be part of an intravascular blood pump, possesses a kink sensor which extends over the total length of the catheter and comprises an optical fiber (28A). The optical fiber is attached to an evaluation device (100) which evaluates a preset light quantity transmitted through the optical fiber as to whether a part of the light quantity is coupled out of the optical fiber along the length of the optical fiber. This is interpreted as a kink event and displayed. The optical fiber preferably utilized for the kink sensor is the optical fiber of an optical pressure sensor.

Embodiments of the disclosure provide a method for evaluating dialyzers used in different medical applications (e.g., hemodialysis). Red blood cell volume lost in a dialyzer is monitored by obtaining blood flowrate measurements and hematocrit measurements at input ports and output ports of the dialyzer. The flowrate and hematocrit measurements are used to determine an accumulation of red cell blood volume in the dialyzer. The measurements may be obtained in a lab environment with an in-vitro blood source or may be obtained in a clinical setting with an in-vivo blood source from a patient.

Vapor data repositories and methods for providing vapor data are disclosed herein. An embodiment of a vapor data repository (VDR) may include memory for vapor production data (VPD) from a vaporizer device and memory for vapor content data (VCD). The VPD may include a sample identifier associated with material having an active ingredient and vaping parameters. The VCD may include concentration of active ingredient data captured by a vapor sample collection apparatus. Another embodiment of a VDR may include memory for vapor correlation data having relationships between VPD and VCD, in which the VPD has production parameters from a vape session, in which the VCD is generated from analysis of captured vaporized material from the vape session on the vaporizer device, and a processor processes requests for the vapor correlation data from users. Methods for providing vapor data are also provided.

A vaporizer device and method for accurate dosing includes a receptacle for holding material having an active ingredient and a heating element for heating the receptacle or air flowing through the receptacle. A controller is configured to receive vapor production information from sensors inside the vaporizer device and generates vapor production data having a sample identifier associated with the material. The vapor production data may also include receptacle temperature, vapor temperature, vapor flow rate, vapor pressure, vapor flow duration, vapor density, heating duration, material pack density, material age, and heating power. The device also has an electronic memory to store the vapor production data.

A vaporizer device and method for delivering an accurate dose. The vaporizer device has a receptacle for holding material having an active ingredient, a heating element for heating either the receptacle or air as it flows to the receptacle, an electronic storage memory for storing vapor correlation data, and a controller configured to control a vaporizer parameter according to instructions in the vapor correlation data and a requested dose of active ingredient, where the vaporizer parameter includes at least one of temperature, air flow rate, pressure drop, pressure differential, and duration per use. The method of using a vaporizer device includes providing material having an active ingredient, receiving a requested dose of active ingredient from a user, determining a vaporizer parameter to satisfy the requested dose according to instructions in vapor correlation data, and controlling the vaporizer parameter to provide the requested dose.