| 摘要 |
An apparatus for detecting an injection port (12) subcutaneously implanted in a patient (13) comprises a magnetic device (15), such as a permanent magnet or a solenoid, that emits a local magnetic field, and a magnetic detector (17), preferably including at least one Hall element, that detects the local magnetic field. The magnetic device (15) is designed to be subcutaneously implanted in the patient at the implanted injection port (12), and the magnetic detector (17) is movable externally along the patient's body to establish an injection position at the patient's skin (16) in front of the implanted injection port where the local magnetic field emitted by the magnetic device is detected by the magnetic detector. As a result, an injection needle (14) can be placed in the established injection position, in order to insert the injection needle through the patient's skin (16) directly into the injection port substantially in the centre thereof. |
