This relates to one or more integrated photodiodes on a back surface of a PPG device. The one or more integrated photodiodes can reduce the gap between one or more windows and the active area of the photodiode(s) to increase the PPG signal strength without affecting the depth of light penetration into skin tissue. In some examples, the photodiode stackup can contact the surface of the windows. In some examples, the photodiode stackups can exclude a separate substrate. In some examples, the photodiode stackup can be deposited on the inner surface of the windows opposite the outer surface of the device. In some examples, the photodiode stackup can be deposited on the back surface and/or outer surface of the device. In this manner, PPG sensors can be included in the device without the need for extra layers and measurement accuracy can be improved due to lower light loss.

A device including a magnetoresistance sensor for detecting a magnetic field from an ear cavity is disclosed. Methods for detecting a magnetic field from an ear cavity with a magnetoresistance sensor are also disclosed.

A signal measurement circuit comprises: a sensor electrode layer connected via a sensor cable to a measurement amplifier circuit; an active shielding layer, which runs along a side of the sensor electrode layer that faces away from the patient; and a first insulating layer that runs between the sensor electrode layer and the active shielding layer. The sensor electrode layer and the active shielding layer are embodied to be electrically conductive.

A multi-line electrical assembly that includes a multi-line cable (14), including a multiplicity of insulated conductive wires (59); and a multi-line electrical plug (16), physically connected to the cable. The plug has a housing (56) and a plurality of spaced-apart printed circuit hoards (PCBs, 48), housed in the housing and having a first end (47) that is connected to the cable and having a second end (46), separated from the first end. Further, the PCBs bear a plurality of conductive traces (50), at least some of the traces being electrically connected to the wires proximal to the first end. The traces terminate proximal to the second end.

A flexible sensor is provided which has a flexible substrate of polymeric material, a bottom electrode layer arranged on the flexible substrate and configured to be a reference electrode, an active layer of piezoelectric material arranged on the bottom electrode layer, a top electrode layer arranged on the active layer and configured to be connected to a signal conductor, and a flexible coating layer of polymeric material that cooperates with the flexible substrate to encapsulate the bottom electrode layer, the active layer, and the top electrode layer. The flexible sensor has an additional layer of metal material arranged on the flexible coating layer and short-circuited to the bottom electrode layer, the additional layer and the bottom electrode layer acting as an electromagnetic shield for the flexible sensor.

A human body sensing mat for sensing the movement of a human body, comprises: a substrate; a sensor array including a plurality of fiber sensors for generating signals according to a distance to a specific object, and disposed on the substrate; and a driving unit for applying a voltage to the sensor array, wherein the sensor array includes a plurality of sensing lines arranged in parallel in a first direction, and regarding the plurality of sensing lines, a first distance between neighboring sensing lines connected to different electrodes is greater than a second distance between neighboring sensing lines connected to the same electrode. The human body sensing mat can analyze user's movements and biometric signals regardless of the user's posture.

Medical devices that include a medical tool, a handle and a flexible cable bundle passing through the handle. The handles and cable routing therethrough are adapted to reduce noise within the cable.

A medical device capable of transmitting a radiofrequency signal to and/or receiving a radiofrequency signal from an external device is provided. The medical device comprises at least one component that contains a polymer composition that exhibits a dielectric constant of about 6 or less at a frequency of 2 GHz, wherein the polymer composition includes a liquid crystalline polymer.

The invention provides a magnetic inductive sensing device (30) comprising a loop antenna (10) for inductively coupling with electromagnetic (EM) signals emitted from a medium in response to stimulation of the medium with electromagnetic excitation signals. The device includes an electromagnetic shield (36) element which is arranged such as to intercept electromagnetic signals travelling to or from the antenna. The shield element is formed of conductive material such as to block electrical field components of incident signals but further incorporates a non-conductive gap in the material so as to prevent the formation of eddy currents. A loop of the antenna is broken by an opening, the opening being bridged by a capacitor, and the device comprises a signal processing means which is electrically coupled to the antenna via only a single point of the antenna, located to one side of the opening.

A detection apparatus is for detecting interference on signal paths in a differential voltage measuring system with a signal measuring circuit for measuring bioelectric signals with a number of useful signal paths having at least one shield. In an embodiment, the detection apparatus includes at least one analysis unit, connected to the shield and embodied to detect interference in a useful signal path of the voltage measuring system via a signal measured at the shield in the case of interference.