Access is provided to certain pulse oximetry systems utilizing a keyed sensor and a corresponding locked sensor port of a restricted access monitor. In such systems, the keyed sensor has a key comprising a memory element, and the monitor has a memory reader associated with the sensor port. The monitor is configured to function only when the key is in communications with the locked sensor port, and the memory reader is able to retrieve predetermined data from the memory element. The monitor is accessed by providing the key separate from the keyed sensor, integrating the key into an adapter cable, and connecting the adapter cable between the sensor port and an unkeyed sensor so that the monitor functions with the unkeyed sensor.

A wearable medical device is provided for monitoring a cardiac condition of a patient, where the device is releasably mounted to the patient's chest and includes at least two skin-facing electrodes forming a first one or more ECG leads for ongoing monitoring of heart functioning and at least one touch electrode for intermittently obtaining additional circuit vectors for deriving additional metrics regarding the functioning of the patient's heart. Each touch electrode is configured to form an additional lead/vector that is a larger vector and/or separated by at least 15 from a corresponding first lead/vector formed from the first one or more ECG leads in a vector cardiogram representation of the first one or more ECG leads and the additional lead/vector.

The present invention provides a sensor garment including a harness. In one exemplary embodiment, the sensor garment includes a textile portion, a device-retention element coupled to the textile portion, and a stretchable harness coupled to the textile portion. The harness includes a conductive element disposed between layers of film. The conductive element includes a first termination point at the device retention element, configured to connect to a monitor device. The conductive element includes a second termination point configured to connect to a sensor or transceiver.

A catheter includes a braid assembly having a dual-laminate coating. The braid assembly includes a plurality of braid members interwoven to provide for interstices between the braid members, each braid member having an electrically conductive element, a flexible non-electrically-conductive polymer coating that insulates the electrically conductive element and a thermoplastic bonding adhesive coating. The braid assembly is formed between an inner polymer layer and an outer polymer layer. One or more of the braid members may be coupled to an energy delivery element.

A method and apparatus for the quantitative determination of an individual's risk for sudden cardiac death (SCD) is described. Risk stratification is accomplished (and may have a sensitivity and specificity of greater than about 90%) by determining the presence in any individual being tested for SCD risk of sequences identified herein to correlate quantitatively with SCD risk. Both the number of such sequences present and their alignment scores (similarity) with the SCD risk sequence ensemble are used to calculate quantitative SCD risk.

A system for controlling reperfusion in a blood vessel of a patient including a flexible elongated member configured and dimensioned for insertion in the vessel of the patient, the elongated member having a proximal portion and a distal portion, the elongated member configured for insertion so the distal portion extends distal of a clot in the blood vessel. A sensor is positioned at the distal portion of the elongated member for positioning distal of the blood clot, the sensor measuring a parameter of blood downstream of the clot. An indicator communicates with the sensor, the indicator indicating a measured parameter for insertion of an instrument for controlling blood flow.

A connection unit (1) connects an impedance tomograph (3) electrically to first and second skin electrodes (6, 8). The skin electrodes (6, 8) are arranged on an electrode carrier (4) spaced from one another in a longitudinal direction L. First and second opposite contact devices (24, 26) are arranged on the electrode carrier (4) and are respectively connected to associated electrodes (6, 8). First and second contact devices (16, 18) are configured for respective detachable connection to the associated first and second opposite contact devices (24, 26). Each contact device (16, 18) has an electric protective circuit (10, 12). A system is provided for an electrical impedance tomograph (3), which system has the connection unit (1).

Disclosed is an optoacoustic probe with a coated transducer assembly. The probe includes a transducer assembly with a multi-layer coating on the active end thereof. The multi-layer coating includes a layer of parylene and at least two layers of metal. In an embodiment, the multi-layer coating includes a layer of nickel, at least one layer of parylene, and a layer of gold.

A wearable medical device is provided for monitoring a cardiac condition of a patient, where the device is releasably mounted to the patient's chest and includes at least two skin-facing electrodes forming a first one or more ECG leads for ongoing monitoring of heart functioning and at least one touch electrode for intermittently obtaining additional circuit vectors for deriving additional metrics regarding the functioning of the patient's heart. Each touch electrode is configured to form an additional lead/vector that is a larger vector and/or separated by at least 15 from a corresponding first lead/vector formed from the first one or more ECG leads in a vector cardiogram representation of the first one or more ECG leads and the additional lead/vector.

Methods, apparatus, and systems to non-invasively determine intra-luminal placement and patency of a vascular access device. Patency and/or placement are estimated indirectly by measuring a physiological parameter which is indicative of proper patency and/or placement of the vascular access device in a patient. The measurement is compared to a reference value or calibration. If the comparison indicates indication of proper patency and/or placement, a signal is generated. The signal can be used in a number of ways. One example is to give a user-perceivable alarm or indication of proper patency and/or placement. Non-limiting examples include activating a light, an audible buzzer, a vibration, readable displayed text or graphics, or some combination of the same. The user can then have an indirect and at least semi-automatic way of estimating proper patency and/or placement of a vascular access device.