Moisture Protected Photoplethysmographic Laser Housing

A photoplethysmographic device, comprising:

• a photoplethysmographic monitor;
• at least two laser housings electronically coupled to the photoplethysmographic monitor;
• at least one diode laser, which generates laser light, positioned within each of the at least two laser housings;
• the photoplethysmographic monitor providing electronic control of each of the diode lasers;
• a desiccant fully enclosed within each of the at least two laser housings;
• each desiccant positioned within each of the at least two laser housings such that each desiccant does not make physical contact with the diode lasers and/or interfere with the laser light;
• and
• a sensor in communication with the photoplethysmographic monitor and adapted to output the laser light from the diode lasers;
• the sensor comprising a photodetector, wherein the photoplethysmographic monitor receives and processes photoplethysmographic data from the sensor.

A method of manufacturing a photoplethysmographic device, comprising the steps of:

• providing a photoplethysmographic monitor;
• providing at least two diode lasers that each generate laser light;
• positioning each diode laser within a laser housing, wherein one or more diode lasers are contained within one or more laser housings;
• electronically coupling each diode laser to the photoplethysmographic monitor;
• positioning a desiccant within each of the one or more laser housings, wherein the desiccant is positioned such that the desiccant does not interfere with the laser light;
• and
• coupling a sensor to the photoplethysmographic monitor, wherein the sensor is in communication with the photoplethysmographic monitor and is adapted to guide the laser light from the diode lasers into a tissue-under-test, and wherein the photoplethysmographic monitor receives and processes photoplethysmographic data from the sensor.