摘要:
The present invention relates to the measurement of forces on the tip of a jet injector drug ampoule. A force sensor is provided that includes full bridge strain gauge configurations mounted on three flexural spokes. The flexural spokes connect an outer fixed portion of the sensor to an inner sensing portion of the sensor. The spokes are formed such that they exhibit fixed/quasi-free bending behavior, as opposed to fixed/fixed bending behavior, when a loading force is applied along the central axis of the ampoule. This increases the area of fully compressive zones and tensile zones on the top and bottom (or vice versa) of the flexure. Larger compressive/tensile zones allow for larger area deformation sensing elements to be employed and subsequently larger signals to be acquired for the same flexure size in a quasi- free/fixed versus fixed/fixed configuration, whereby the same larger sized sensing elements suitable for use on a quasi -free/fixed flexural spoke would span both compressive and tensile zones on a fixed-fixed flexural spoke and produce muted strain signals. Additionally, in an embodiment where customized resistive strain gauge arrays are employed for the sensing elements, for example by mounting custom flex-PCBs or building the entire assembly out of one or more parts of FR-4 PCB, the strain gauges can be designed to fill the entire area of the compressive and tensile zones. Because of the full bridge configuration of the strain gauges, vertical forces applied to each flexural spoke are the only forces that are outputted. Lateral forces and twisting on individual flexures are rejected due to the full-bridge configuration detailed within the disclosure. By using the output of all three full bridges in parallel, it is possible to discriminate between lateral forces and axial forces directed collinear with the center axis of the ampoule applied to the tip of the nozzle. This information can be relayed to the user to attain, for example, a pre-determined contact force between the nozzle and an area receiving an injection.
摘要:
Disclosed is a method for controlling an auto injector and an auto injector for administering a medicament from a cartridge having a first cartridge end and a second cartridge end and having a cartridge outlet at the first cartridge end, the cartridge comprising a cartridge compartment with a first cartridge subcompartment containing a first medicament component of the medicament and a second cartridge subcompartment containing a second medicament component of the medicament. The auto injector comprises: a housing; a cartridge receiver; a cartridge sensor; a drive module; an orientation sensor; and a processing unit.
摘要:
A smart injection system that promotes patient safety includes, among other things, a smart stem that allows for measuring the location of the injection relative to the patient's face and/or the amount of medication injected into the patient. In addition, the smart stem has medication cartridge verification and injector verification features. The smart stem wirelessly transmits the measure data to a processing system.
摘要:
Disclosed is an adherence monitor for a medicament inhaler and methods for detecting cap removal. Two sensors 16, 16' are provided for cap removal / presence, in order to minimise the risk of inadvertent sensing of cap removal.
摘要:
A wearable health and lifestyle device comprising at least a measurement module (12) configured to be worn by a user in at least a first wearing position, the measurement module comprising a 3-axis accelerometer unit (13b) configured to provide acceleration data and inclination data, a temperature measurement unit (13a) configured to provide temperature data, and a light radiation measurement unit (13d) configured to provide light radiation data, said light radiation measurement unit comprising at least one multi-spectral sensor configured to measure wavelength bands over the range 290 nm to 1150 nm said device further comprising a storage module (14) configured to receive and store said acceleration data, said inclination data, said temperature data and said light radiation data, and an analysis module (16) configured to analyse a data set comprising acceleration data, inclination data, temperature data and light radiation data acquired all along a period of time greater than 24 hours and stored in the storage module, so as to provide information regarding a user physical activity, and a wake/sleep state, the temperature measurement unit being configured to measure the user body temperature in the first wearing position.
摘要:
An infusion device (1) for acting onto a tube set (2) to transport a medical fluid through the tube set (2) comprises a first housing element (10) constituted to receive a tube section (200, 201) of the tube set (2) and a second housing element (11) being movable with respect to the first housing element (10) such that, in a closed position of the second housing element (11), the first housing element (10) and the second housing element (11) are constituted to receive the tube section (200, 201) in between each other. A sensor device (3) is arranged on the first housing element (10) and having a sensor element (30) for measuring a force on the tube section (200, 201) of the tube set (2). Herein it is provided that the sensor device (3) is arranged on the first housing element (10) in an elastically displaceable manner, wherein the sensor device (3) is supported on the first housing element (10) via at least one spring element (33). In this way an infusion device is obtained which may be less prone to variations in the squeezing of a tube section in between the sensor element and a movable housing element, potentially reducing the effort for calibrating infusion devices and increasing the reliability of pressure measurements on a tube section.
摘要:
A mechanical fluid pressure modification valve, or "MFLP-valve", is set forth. The MFLP-valve can be actuated upon movement of a movable pressure system member of a medical pressure system reaching a selected position. Additionally, the MFLP-valve can be actuated based on a pressure condition of the system. When the MFLP-valve unseals, a pressure differential between a pressure chamber and a volume outside of the chamber can be relieved. Disengagement of the movable pressure system member from the MFLP-valve can enable the MFLP-valve to re-seal. The MFLP-valve may include a flag that indicates the position of the movable pressure system member. The MFLP-valve may be provided in a diaphragm-type pressure source.
摘要:
The invention refers to a drug delivery device (1) with a piston rod (6) which extends along a longitudinal axis of the drug delivery device (1), wherein the piston rod (6) is adapted to apply an axial load in the distal direction to a cartridge bung (27) in order to dispense a medicament contained in the cartridge (25). In order to improve the convenience of the injection process and to mitigate the risk of underdosing due to a blocked needle a cartridge bung load indicator (40, 60, 70) is provided, located at the distal end of the piston rod (6) and adapted to abut against the cartridge bung (27), wherein the cartridge bung load indicator (40, 60, 70) comprises an indicator element (53, 62, 71) that audibly, tangibly and/or visually indicates a load state of the piston rod (6) to the user.
摘要:
Methods, systems, and devices are provided for generating a mist. In one embodiment, a fluid delivery device (1) is provided that includes a housing (10), a fluid vaporizer (30) disposed within the housing and configured to receive fluid and to produce an aerosol mist of liquid particles from the fluid, and a pump (40) configured to accelerate the aerosol mist produced by the fluid vaporizer. Methods are provided for producing a mist, and the methods can include delivering a fluid to a fluid vaporizer that generates a first mist. The fluid vaporizer delivers the mist to a pump that generates a second mist from the first mist.