Abstract:
Drug delivery device comprising expelling means allowing a user to set a dose corresponding to a number of increments from an initial state, an indication member adapted to rotate in a first direction corresponding to the set dose, and rotate in an opposed second direction corresponding to an expelled dose, the indication member having an initial rotational position corresponding to both the initial state and the fully expelled dose state. Sensor means having an incremental counter synchronized with the rotational position of the indication member and having a reference point corresponding to the initial rotational position of the indication member. After detecting an error state the sensor means is adapted to re-synchronize by detecting the number of rotational increments for a set dose and for a subsequent expelled dose. If the numbers are identical the reference point is reset corresponding to the current rotational position of the indication member.
Abstract:
A drug delivery device comprising; a housing; a cylindrical member configured to be rotatably supported inside the housing, wherein the outer surface of the cylindrical member is provided with at least first and second tracks together forming an encoder, each track comprising conductive segments and non-conductive segments; and at least first and second groups of contacts configured to engage the first and second tracks respectively at predetermined intervals along the length of the track.
Abstract:
A position sensor generates a signal representative of the angular position and, if desired, angular velocity of a rotating object using only a single circular track and plural brushes that ride on the track when the object rotates. The single circular track can have plural segments, and the sensor can generate more than one signal cycle per revolution.
Abstract:
A medication injector apparatus such as an injection pen. The injection pen includes a resettable, cartridge plunger drive assembly including an axially floating nut, a cartridge plunger engaging screw, and a drive clutch movable with the nut and which when rotated causes the screw to screw through the nut. When a cartridge assembly is mounted to the pen base, the floating nut and drive clutch are shifted proximally such that the drive clutch is in torque transmitting engagement with a rotatable drive member of the pen, such that rotation of that drive member results in drive screw advancement through the nut in the distal direction. When the cartridge assembly is not mounted to the pen base, the floating nut and drive clutch are biased distally to disengage the drive clutch from torque transmitting engagement with the rotatable drive member and to thereby allow the drive screw to be reset proximally through the nut to a position more retracted within the pen base. The injection pen also may include an injection clicker assembly having a collar arranged coaxially on a drive sleeve and which oscillates axially on the drive sleeve that rotates during medication dispensing to provide an audible clicking sound that indicates injecting use of the pen. The injection pen also may include a doseable quantity identifier that uses a rotational matrix and a sensor for electrically sensing the arrangement of the dose setting mechanism of the pen, which identifier may be part of a therapeutic dose indicating system that utilizes a cartridge recognizer to recognize a concentration of medication so as to allow an automatic determination of a therapeutic dose. The injection pen further may include an assembly for selectively rotating a drive sleeve of the pen, which assembly has a dial that rotates out during dose setting and which translates in without rotation during dose injecting.
Abstract:
The device comprises a coding disc (10) mounted on a rotary axis and including an electroconductor track (12) with branches (13), materialized on an electro-insulating support (14) and collectors arms (21a, 23a, 23b) associated to said track and united to terminals (22, 24a, 24b) which bear elastically on various points of the track and branches according to the rotation position of said coder disc. The collector arms (21a, 23a, 23b) and said terminals (22, 24a, 24b) are made of various materials. The material of the arms is elastic and thin and the material of the terminals is ductile and thick; said arms and terminals are joined by welding. The process proposes to obtain the terminals by die-cutting a first metal strip; the formation of segments and at least one appendix on a second metal strip; and the superposition and linking of said strips by welding.
Abstract:
A drug delivery device comprising: • a housing (404); • a plurality of contacts (212); • a rod (414) disposed within the housing; and • an encoded member (410) configured: • to be rotatably supported inside the housing; • to engage with the rod and to be rotatable with respect to the rod; and • to be axially constrained with respect to the housing such that axial advancement of the rod in a first direction relative to the housing causes rotation of the encoded member, wherein the outer surface of the encoded member is provided with a plurality of tracks together forming an encoder, each track comprising conductive segments and non-conductive segments and wherein the encoded member is supported in the housing such that each track is engaged by a respective one of the plurality of contacts.
Abstract:
An encoder assembly is disclosed which comprises a drum-like rotor having an outer circumference and a central bore with at least one slot, and a plurality of encoder elements arrayed around the outer circumference of the drum-like rotor. The assembly further comprises a shaft having a diameter sized to fit into the central bore, and having a flattened key which is configured to fit into the at least one slot. The rotor and shaft fit into a housing having an inner section sized to receive the drum-like rotor and encoder elements. The inner section has an opening along one side such that the inner section incompletely encloses the circumference of the rotor. There is also at least one spring contact locatable within the housing such that it can make contact with the encoder elements through the opening in the inner section of the housing.
Abstract:
The present invention relates to a digital slider which mechanically generates a digital signal or a digital code. A plurality of parallel slide rails (2) is arranged on a substrate for generating said digital code. Said rails (2) are composed of conductive (5) and non-conductive (6) sections. The conductive sections (5) are electrically connected to one another. The number of the slide rails (2) which are arranged in parallel determines how exact the position of the gliding element (4) can be detected. The aim of the invention is to constantly and evenly guide the gliding elements (4, 4'). To this end, the yoke (9, 9') is guided on two opposite sides in a rotationally fixed manner.