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US 9,802,009 B2Granted
Needle magnetizing arrangement
AssigneeSanofi-Aventis Deutschland GmbH
InventorsChristian Nessel, Daniel Auernhammer
Life of this patent
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Abstract
A needle magnetizing arrangement (1) comprising a controller (4) adapted to generate a first magnetic field (F) for magnetizing a needle (2), and a magnetic field sensor (5) adapted to generate a signal based on a second magnetic field (FR) of the needle (2).
Claims18
A needle magnetizing system comprising:
- a processor configured to:
- permit an injection procedure in response to determining an absence of a magnetic field in a first needle, wherein the absence of the magnetic field indicates that the first needle is unused;
- and
- prevent an injection procedure in response to determining a presence of a magnetic field in the first needle, wherein the presence of the magnetic field indicates that the first needle is used;
- a controller coupled to the processor, wherein, in response to the processor permitting the injection procedure in response to determining an absence of a magnetic field in a second needle, the controller is adapted to generate a first magnetic field (F) for magnetizing the second needle, wherein the first magnetic field (F) magnetizes the second needle to have a second magnetic field (FR) during the injection procedure;
- a coil coupled to the controller, wherein the controller passes current (I) through the coil;
- a magnetic field sensor adapted to generate a signal based on the second magnetic field (FR) of the second needle after it is magnetized by the first magnetic Field (F), wherein the second needle is positioned at a first distance from the coil, the first distance sufficient to magnetize the second needle to have the second magnetic field (FR) and the magnetic field sensor is positioned at a second distance from the second needle, the second distance sufficient for the magnetic field sensor to sense the second magnetic field (FR).
4 more elements
An injection device comprising:
- an unmagnetized needle;
- and
- a needle magnetizing system comprising:
- a processor configured to:
- permit an injection procedure in response to determining an absence of a magnetic field in a first needle, wherein the absence of the magnetic field indicates that the first needle is unused;
- and
- prevent an injection procedure in response to determining a presence of a magnetic field in the first needle, wherein the presence of the magnetic field indicates that the first needle is used;
- a controller coupled to the processor, wherein, in response to the processor permitting the injection procedure in response to determining an absence of a magnetic field in the unmagnetized needle, the controller is adapted to generate a first magnetic field (F) for magnetizing the unmagnetized needle, wherein the first magnetic field (F) magnetizes the unmagnetized needle;
- and
- a magnetic field sensor adapted to generate a signal based on a second magnetic field (FR) of the needle magnetized by the first magnetic field (F), wherein the magnetic field sensor is positioned at a distance from the unmagnetized needle, the distance sufficient to sense the second magnetic field (FR).
7 more elements
A method comprising:
- prior to using a first needle in a medicament injection procedure, wherein an unmagnetized needle is an unused needle and a magnetized needle is a used needle:
- positioning the first needle at a distance from a magnetic field sensor, the distance sufficient to sense any magnetic field in the first needle;
- measuring, by the magnetic field sensor, a magnetic field in the first needle, the magnetic field showing that the needle is magnetized;
- and
- in response to measuring the magnetic field, executing, by a processor, a predetermined action comprising preventing the injection procedure;
- and
- in place of the first needle, positioning a second needle at the distance from the magnetic field sensor;
- measuring, by the magnetic field sensor, no magnetic field in the second needle showing that the second needle is unmagnetized;
- and
- in response to measuring no magnetic field in the second needle, executing, by the processor, the medicament injection procedure.
7 more elements
Dependencies are inferred from the claim text.