A dose control device adapted to be removably mounted onto an exterior peripheral surface of an injectable drug delivery device, the drug delivery device including a substantially elongate drug delivery body, at least one injectable drug held by the body, the body having a distal and proximal extremity. The dose control device includes a first component configured to fit and substantially encase at least a portion of an exterior peripheral surface of the drug delivery device, and located at a proximal extremity of the drug delivery device; a second component configured to fit and substantially encase a corresponding remaining unencased portion of the exterior peripheral surface of the drug delivery device, and also located at a proximal extremity of the drug delivery device. The first component and the second component removably engage with each other to form a unit having a longitudinal bore that extends along a longitudinal axis of the drug delivery device, and in which bore the drug delivery device is encased between the first component and the second component.

Magnetic coupling devices are disclosed having magnetic field sensors. The magnetic coupling device may include degaussing coils wrapped about pole extension shoes of the magnetic coupling device.

Magnetic coupling devices are disclosed having magnetic field sensors. The magnetic coupling device may include degaussing coils wrapped about pole extension shoes of the magnetic coupling device.

During both invasive and non-invasive treatments and therapies, inaccuracies in locating the areas of interest mean that not all the area is treated, or the treatment is incomplete. A magnetic field probe 100, 1010, 102, 103 is provided that improves determination of a disposition of an implantable magnetic marker 200, the probe comprising a first 110, 120 and second 110, 120 magnetic sensor, substantially disposed along a transverse axis intersecting the longitudinal axis of the probe 150. The first 110, 120 and second 110, 120 magnetic sensors are close to the distal end 160 of the probe, and are separated by a minor sensor separation. A third 120, 130 magnetic sensor is provided close to the proximal end 165, separated by a major sensor separation from the second magnetic sensor 110, 120 close to the distal end 160, the major sensor separation being larger than the minor sensor separation; and the ratio of the major sensor separation to the minor sensor separation is in the range 1.25 to 40, preferably in the range 1.6 to 7.6. In this example, the second magnetic sensor is functionally configured and arranged to co-operate with both the first magnetic sensor and the third magnetic sensor. This may be implemented using three or more magnetic sensors. This provides a probe capable of accurately determining one or more dispositions of the implantable magnetic marker when the distal end of the probe is close to the marker and also when it is further away. In particular, including the pair of sensors close to the distal end may increase the sensitivity and accuracy of the probe.

During both invasive and non-invasive treatments and therapies, inaccuracies in locating the areas of interest mean that not all the area is treated, or the treatment is incomplete. A magnetic field probe 100, 1010, 102, 103 is provided that improves determination of a disposition of an implantable magnetic marker 200, the probe comprising a first 110, 120 and second 110, 120 magnetic sensor, substantially disposed along a transverse axis intersecting the longitudinal axis of the probe 150. The first 110, 120 and second 110, 120 magnetic sensors are close to the distal end 160 of the probe, and are separated by a minor sensor separation. A third 120, 130 magnetic sensor is provided close to the proximal end 165, separated by a major sensor separation from the second magnetic sensor 110, 120 close to the distal end 160, the major sensor separation being larger than the minor sensor separation; and the ratio of the major sensor separation to the minor sensor separation is in the range 1.25 to 40, preferably in the range 1.6 to 7.6. In this example, the second magnetic sensor is functionally configured and arranged to co-operate with both the first magnetic sensor and the third magnetic sensor. This may be implemented using three or more magnetic sensors. This provides a probe capable of accurately determining one or more dispositions of the implantable magnetic marker when the distal end of the probe is close to the marker and also when it is further away. In particular, including the pair of sensors close to the distal end may increase the sensitivity and accuracy of the probe.

Disclosed is a magnetometer architecture that couples one or more coils to a magnetic yoke to allow the reset of the magnetic yoke and one or more magnetic field sensors simultaneously after, for example, exposure to a large stray magnetic field. Also, disclosed is a magnetometer architecture that integrates separate magnetic pole pieces offset from the yoke that are each wound by a reset coil to allow reset of the one or more magnetic field sensors.

A measuring method is provided. A probe and a first sensor are disposed over a jig including a bar protruding from the jig. The probe is moved until a first surface of the probe is laterally aligned with a second surface of the bar facing the jig. A first distance between the second surface of the bar and the first sensor is obtained by the first sensor. The probe and the first sensor are disposed over a magnetron. Magnetic field intensities at different elevations above the magnetron are measured by the probe. A method for forming a semiconductor structure is also provided.

The present invention relates to a magnet unit including: a tubular holder having a central axis; and a magnet formed inner region of one end side of the tubular holder, in which the magnet includes a protruding portion at a corner portion where an end surface of the magnet in a central axis direction intersects with an outer peripheral surface of the magnet, which is provided along an inner peripheral surface of the tubular holder, and the protruding portion protrudes in the central axial direction.

An embodiment of a magnetic-field sensor includes a magnetic-field sensor arrangement and a magnetic body which has, for example, an inhomogeneous magnetization. The magnetic body has a recess facing the magnetic-field sensor arrangement and resulting in a non-convex cross-sectional area, the magnetic body is annular or comprises an annular section, and the magnetic body is fixedly arranged with respect to the magnetic-field sensor arrangement and forms a back-bias magnet for the magnetic-field sensor arrangement.

An embodiment of a magnetic-field sensor includes a magnetic-field sensor arrangement and a magnetic body which has, for example, an inhomogeneous magnetization. The magnetic body has a recess facing the magnetic-field sensor arrangement and resulting in a non-convex cross-sectional area, the magnetic body is annular or comprises an annular section, and the magnetic body is fixedly arranged with respect to the magnetic-field sensor arrangement and forms a back-bias magnet for the magnetic-field sensor arrangement.