| abstract |
Provided according to embodiments of the invention are photoplethysmography (PPG) sensors, systems and accessories, and methods of making and using the same. In some embodiments of the invention, the PPG sensors include a clip body that includes a first end portion and a second end portion; a flex circuit attached or adjacent to the clip body, and an elastomeric sleeve that envelops ( 1 ) at least part of the first end portion and at least part of the flex circuit attached or adjacent thereto; or ( 2 ) at least part of the second end portion and at least part of the flex circuit attached or adjacent thereto. |