Lacrimal implant detection

An apparatus comprising:

• a lacrimal implant insertable at least partially into a lacrimal punctum, the lacrimal implant comprising:
• an implant body, wherein the implant body includes a detection device, and wherein the detection device comprises at least one of:
• a ferromagnetic material that is capable of retaining a ferromagnetic property after application and removal of an external magnetic field;
• an ultrasonically reflective material configured to allow automatic detection of the lacrimal implant with a separate ultrasonic detector device;
• and
• a radio frequency identifier (RFID) included in the implant body, wherein the RFID is configured to communicate with a lacrimal implant detector device.

A detection system comprising:

• a light emitting source to provide incident light to a lacrimal implant;
• an optical filter configured to pass light of a specified wavelength range reflected from a luminescent material of the lacrimal implant;
• a light detecting device configured to receive the light passed by the filter and to produce a responsive electrical signal when sufficient light is received to indicate proximity of the lacrimal implant;
• and
• an indicator, communicatively coupled to the light detecting device, to provide a user indication of plug detection upon receiving the electrical signal.

A detection system comprising:

• a lacrimal implant insertable at least in part into a lacrimal punctum, the lacrimal implant comprising an implant body of biocompatible material, wherein the implant body comprises a ferromagnetic material that is capable of retaining a ferromagnetic property after application and removal of an external magnetic field;
• and
• a lacrimal implant detector device comprising:
• a magnetic field detector circuit;
• and
• an indicator device, communicatively coupled to the magnetic field detector circuit, configured to provide an indication upon detection of a magnetic field of the lacrimal implant.

A detection system comprising:

• a lacrimal implant insertable into a lacrimal punctum, the lacrimal implant comprising:
• an implant body of biocompatible material;
• and
• an electrically conductive material within the implant body;
• and
• a lacrimal implant detector device including:
• a sensing circuit having a characteristic impedance;
• a detector circuit configured to detect a change in the characteristic impedance due to proximity of the lacrimal implant to the sensing circuit;
• and
• an indicator device, communicatively coupled to the detector circuit, configured to provide an indication upon detection of the change in the characteristic impedance.