Abstract: A waterproof physiological signal detection device includes at least one electrode pad, a waterproof base layer, at least one water absorption unit, and a waterproof top layer. The electrode pad is positioned on a top surface of the waterproof base layer, and a first receiving compartment formed therebetween. The water absorption unit is positioned in the first receiving compartment. The water absorption unit has a top engaging the electrode pad and s a bottom engaging the waterproof base layer. The waterproof top layer overlaps the waterproof base layer and forms at least one top layer opening that corresponds to and exposes the at least one electrode pad. An undersurface of a circumference of the top layer opening overlaps a circumference of a top surface of the electrode pad with a central portion of the electrode pad projecting through the top layer opening.

Abstract: A garment is provided with an electrode and indicia to facilitate placement of the garment. The indicia is used to orient the garment such that the electrode is placed in precise orientation with respect to a stimulation site to facilitate intraoperative monitoring during surgical procedures.

Abstract: A biosensor is described which can obtain physiological data from an individual. The biosensor may collect electrodermal activity, skin temperature, and other information. The biosensor may be attached to the body through the use of a garment which may be fastened in multiple locations on the human body. The biosensor has replaceable electrodes which may be interchanged. The electrodes contact the body without having any wires or leads external to the sensor.

Abstract: Specified information can be provided to a user, to a machine, or to an automated process using a specified configuration of a plurality of radiopaque rings about at least a portion of an implantable lead.

Abstract: An electrophysiology catheter includes an elongate catheter body having an elastically-deformable distal region predisposed to assume a spiral shape and a first plurality of electrodes disposed thereon. Each of the first plurality of electrodes includes an electrically active region limited to the inner surface of the spiral shape for use in non-contact electrophysiology studies. A second plurality of electrodes may also be disposed on the distal region interspersed (e.g., alternating) with the first plurality of electrodes, with each of the second plurality of electrodes having an electrically active region extending into the outer surface of the spiral shape for use in contact electrophysiology studies. The distal region may be deformed into a straight configuration for insertion into and navigation through the patient's vasculature, for example via use of a tubular introducer. As the distal region deploys beyond the distal end of the introducer, it resumes the spiral shape.

Abstract: Garments having one or more stretchable conductive ink patterns thereon. Described herein are garments (including compression garments) having one or more highly stretchable conductive ink pattern formed of a composite of an insulative adhesive, a conductive ink, and an intermediate gradient zone between the adhesive and conductive ink. The conductive ink typically includes between about 40-60% conductive particles, between about 30-50% binder; between about 3-7% solvent; and between about 3-7% thickener. The stretchable conductive ink patterns may be stretched more than twice their length without breaking or rupturing.

Abstract: Provided are methods and devices for interfacing with brain tissue, specifically for monitoring and/or actuation of spatio-temporal electrical waveforms. The device is conformable having a high electrode density and high spatial and temporal resolution. A conformable substrate supports a conformable electronic circuit and a barrier layer. Electrodes are positioned to provide electrical contact with a brain tissue. A controller monitors or actuates the electrodes, thereby interfacing with the brain tissue. In an aspect, methods are provided to monitor or actuate spatio-temporal electrical waveform over large brain surface areas by any of the devices disclosed herein.

Abstract: An intravascular electrode device for use in neuromodulation includes an anchor expandable from a radially compressed position to a radially expanded position. A lead extends from the anchor and has at least one conductor extending through it. A flex circuit is coupled to the anchor and comprises a flexible insulative substrate, a plurality of electrodes carried by the substrate, and a plurality of conductive traces carried by the substrate, each trace electrically coupled to an electrode and a conductor. Expansion of the anchor within a blood vessel biases the electrodes into contact with the surrounding blood vessel wall. An exemplary anchor includes a first portion having expansion forces sufficient to bias the electrodes against the vessel wall for mapping and chronic stimulation, and a second portion having greater radial expansion forces sufficient to chronically engage the vessel wall once an optimal electrode location has been selected.

Abstract: A catheter assembly for use in an anatomy can include an elongated body, which can have a proximal end and a distal end. The body can also define a lumen from the proximal end to the distal end. The assembly can include at least one electrode, which can be coupled to the distal end to sense an electrical activity within the anatomy. The assembly can include a core wire, which can be received within the lumen from the proximal end to the distal end. The core wire can be configured to move the distal end from a first configuration to a second configuration. The assembly can also include a necked portion, which can be formed between the proximal end and the distal end to provide increased stiffness to the distal end of the body.

Abstract: A medical implantable lead comprises a conduction controlling means, which at least during an initial stage after implantation is capable of rendering a first contact surface electrically inactive and which is capable of rendering the first contact surface electrically active after the initial stage. By means of the inventive lead it is possible to detect whether the helix is sufficiently screwed into the tissue or not.

Abstract: A device, system and method for obtaining a 12 lead electrocardiogram (ECG) from measurements obtained with 3 electrodes in some embodiments (it should be noted that some separate embodiments of the present invention relate to such measurements with 4 electrodes). Optionally and preferably, the device, system and method of the present invention may be easily and accurately operated by a layperson.

Abstract: Methods and devices for monitoring and/or treating patients comprise a switch to automatically start-up the device when the device contacts tissue. By automatically starting up the device, the device may be installed without the clinician and/or user turning on the device, such that the device can be easy to use. In many embodiments, the device comprises startup circuitry with very low current and/or power consumption, for example less than 100 pA. The startup circuitry can detect tissue contact and turn on circuitry that is used to monitor or treat the patient.

Abstract: A nerve monitoring device, including a cannula, a sensor for monitoring a nerve, and an optional support element, can be inserted into an anatomic space. The cannula, sensor and/or support element can automatically conform to and match the geometry of the anatomic space, which can enhance desired contact between the sensor and anatomic features, such as muscles, nerves or tissue in the space in an atraumatic manner. The sensor, cannula and/or support element can include one or more strips or other elements that convert from a retracted mode to an expanded mode in which the strips or elements expand, enlarge or otherwise move to match the geometry of the space and place the sensors in precise monitoring proximity relative to the target muscles, nerves or tissues. An exemplary application of the device is in the field of laryngeal monitoring, however, the device is well suited for other applications.

Abstract: A set of electrodes suitable for being attached to the skin of an animal or human being at locations normally used for attaching single-lead electrodes with a single sensor point. The electrodes of the set of electrodes have at least three sensors arranged to define two linearly independent directions, which allows sensing corresponding electrical potential differences in the two directions. Signals representing sensed potential differences can be transmitted wirelessly or via conductors to a processing apparatus for being transformed into electrical potentials that approximate traditional potentials obtained with wired single-sensor electrodes. A method is also presented.

Abstract: An electrode member for a body is provided. The electrode member includes a first sheet member having at least one hole formed therein, at least one second sheet member respectively disposed in the at least one hole, at least one metal contact point disposed on the first sheet member, and at least one electrode respectively disposed on the at least one second sheet member.

Abstract: Transcutaneous safety electrode assemblies are described that can include a conducting electrode having a sharp end to penetration of the skin of a patient, and a shielding member that is deployable by a user so as to shield the sharp end of the electrode after the electrode is removed from the skin. The shielding member can be deployed by retracting the sharp end of the electrode a protective housing, assisted by spring force provided by the electrode wire so as to self-retract into the protective housing. The deployment and disengagement can be via push button action, and the electrode assembly can be self-retaining on the patient's skin while deployed.

Abstract: Detects external noise using a motion sensor signal for example to increase the specificity of arrhythmia detections based on active muscle noise detection. Whenever a motion signal is present that is below or above a certain frequency, for example 5 Hz, or within a certain frequency range, for example 1 to 10 Hz, and/or above a certain amplitude, for example greater than 1 mg, or close to a known motion pattern, then the detection of fast ventricular arrhythmia is suspended. For the detection of slow arrhythmia, for example asystole or syncope, an episode is confirmed when a short lasting motion sensor signal occurs. Uses a motion sensor based signal, for example as obtained from an accelerometer on an implantable electrode lead and/or implantable device.

Abstract: An electrosurgical tool for cauterizing or ablating patient tissue, which tool includes a tubular shaft which defines therein a conduit in communication with a suction source and which mounts an electrode at the distal end thereof. An electrode support element is provided at the distal end of the shaft for mounting and insulating the electrode. The support element and the electrode together define a suction opening at the treating surface of the electrode which minimizes clogging of the tool.

Abstract: Apparatus for capturing EEG signals comprising an implantable signal capture unit (34) connected to a proximal end of at least one implantable electrode (32) is implanted by passing a tubular guide sheath (24,26) along a subcutaneous path from an implantation site, passing the distal end of a said electrode through said guide sheath to bring said signal capture unit to said implantation site, and withdrawing said guide sheath from the electrode while progressively axially splitting the guide sheath to enable its removal. The signal capture unit may have a housing having at least two electrode contacts on its for capturing EEG signals in operative connection with circuitry within said housing for receiving said EEG signals and for wireless transmission thereof for reception at a location exterior to the body of the patient.

Abstract: What is described are a signal detecting device for detecting a vital parameter of a living being, having a plurality of electrodes and an electrode selecting device for selecting a pair of electrodes from the plurality of electrodes such that a difference signal suitable for measuring the vital parameter is derivable, an electrode arrangement and a method.