A magnetic field generator assembly is configured to be associated with a table supporting a body. The magnetic field generator comprises magnetic field transmitters that are thin (of minimal height) and transparent, or substantially transparent, to x-ray radiation. The magnetic field transmitters are configured to minimally obstruct components of an imaging system and to minimally interfere with image quality.

An electrode connector adapted for attachment to a biomedical patient electrode by either pinch or snap connection includes a pair of pivotally connected members including a connector body and a jaw pivotally connected to said connector body, with the jaw defining a beveled lower surface that functions to urge the jaw open by engagement of the top surface of an ECG stud thereby allowing the connector to be attached by snap engagement. An electrically conducting plate is disposed at the bottom of the connector to maximize electrical contact with the electrode stud. The jaw member further includes a lip functioning to engage a lower portion of the head of the stud and urge the radially enlarged base of the stud into electrical contact with the bottom surface of said electrically conducting member. An ECG electrode connector in accordance with the present invention may further be fabricated of radiolucent materials.

According to at least one example, an ambulatory medical device is provided. The device includes a plurality of electrodes disposed at spaced apart positions about a patient's body and a control unit. The control unit includes a sensor interface, a memory and a processor. The sensor interface is coupled to the plurality of electrodes and configured to receive a first ECG signal from a first pairing of the plurality of electrodes and to receive a second ECG signal from a second pairing of the plurality of electrodes. The memory stores information indicating a preferred pairing, the preferred pairing being either the first pairing or the second pairing. The processor is coupled to the sensor interface and the memory and is configured to resolve conflicts between interpretations of first ECG signal and the second ECG signal in favor of the preferred pairing.

According to at least one example, an ambulatory medical device is provided. The device includes a plurality of electrodes disposed at spaced apart positions about a patient's body and a control unit. The control unit includes a sensor interface, a memory and a processor. The sensor interface is coupled to the plurality of electrodes and configured to receive a first ECG signal from a first pairing of the plurality of electrodes and to receive a second ECG signal from a second pairing of the plurality of electrodes. The memory stores information indicating a preferred pairing, the preferred pairing being either the first pairing or the second pairing. The processor is coupled to the sensor interface and the memory and is configured to resolve conflicts between interpretations of first ECG signal and the second ECG signal in favor of the preferred pairing.

A method of controlling discomfort of a patient during external pacing by an external medical device includes detecting a cardiac condition of the patient; receiving, via a user interface, discomfort information descriptive of the discomfort experienced by the patient; determining from the discomfort information whether the patient is conscious or unconscious; responsive to determining from the discomfort information that the patient is unconscious, executing, via at least one therapy electrode disposed on the patient, at least one pacing routine, the at least one pacing routine being associated with the cardiac condition; and responsive to determining from the discomfort information that the patient is conscious, adjusting at least one characteristic of the at least one pacing routine.

A field generator includes multiple planar coils that are arranged in a single plane. At least two of the coils are non-concentric and are wound around respective axes that are not parallel with one another, so as to generate respective magnetic fields that are not parallel with one another.

A disposable handle assembly may include a housing including an end wall at a distal end of the housing and first extension walls extending from the end wall, an end cap attached to a second extension wall on a proximal end of the housing, and a power source positioned within the housing between the distal end and the end cap. The disposable handle assembly may include a pin positioned within the housing, a circuit wire positioned within the housing, and a plate attachment positioned on the end wall between the first extension walls. The circuit wire may be in electrical contact with the contact plate and an end of the power source received by the end cap. The pin and the contact plate may be electrically connected outside of the housing and close an electrical circuit of the disposable handle assembly.

An electrode connector adapted for attachment to a biomedical patient electrode by either pinch or snap connection includes a pair of pivotally connected members including a connector body and a jaw pivotally connected to said connector body, with the jaw defining a beveled lower surface that functions to urge the jaw open by engagement of the top surface of an ECG stud thereby allowing the connector to be attached by snap engagement. An electrically conducting plate is disposed at the bottom of the connector to maximize electrical contact with the electrode stud. The jaw member further includes a lip functioning to engage a lower portion of the head of the stud and urge the radially enlarged base of the stud into electrical contact with the bottom surface of said electrically conducting member. An ECG electrode connector in accordance with the present invention may further be fabricated of radiolucent materials.

An external medical device includes a user interface; at least one therapy electrode configured to be disposed on a patient; and a processor operatively coupled to the at least one therapy electrode, the processor configured to cause a treatment manager to detect a cardiac condition of the patient; receive, via the user interface, discomfort information descriptive of the discomfort experienced by the patient; responsive to determining from the discomfort information that the patient is unconscious, execute at least one pacing routine, the at least one pacing routine being associated with the cardiac condition; and responsive to determining from the discomfort information that the patient is conscious, adjust at least one characteristic of the at least one pacing routine.

A pressure sensor configured for biological pressure measurement at a distal end portion of an elongated member comprises a dissolvable hydrophilic material coated on a surface of the pressure sensor. A guide wire for biological pressure measurement may include a tube extending along a longitudinal axis of the guide wire; and a pressure sensor for biological pressure measurement, at least a portion of the pressure sensor being mounted within the tube. The pressure sensor comprises a pressure sensor membrane facing a top side of the tube. A circumferential wall of the tube includes at least six openings: a first distal opening, a second distal opening located on a right side of the tube, a third distal opening located on a left side of the tube, a first proximal opening, a second proximal opening located on a right side of the tube, and a third proximal opening located on a left side of the tube. The first distal opening is larger than the second and third distal openings, and the first proximal opening is larger than the second and third proximal openings.