Intravascular devices, systems, and methods are disclosed. In some embodiments, the intravascular devices include at least one pressure sensing component within a distal portion of the device. In that regard, one or more electrical, electronic, optical, and/or electro-optical pressure-sensing components is secured to an elongated member and the system includes components to process the output signals according to various calibration parameters.

A method of authorizing a limited use intravascular device can include determining if the intravascular device is in communication with a clinical system; determining if the intravascular device is authorized for clinical operation without providing the clinical system access to intravascular device data stored on the intravascular device; and providing an authorization signal to the clinical system. An intravascular device can include a flexible elongate member including a sensing component at a distal portion and a connector at a proximal portion, the connector including: a memory component configured to store a parameter value; a processing component; and a charge storage component configured to power the memory component and/or the processing component; wherein the processing component is configured to determine if the flexible elongate member is authorized for clinical operation using the parameter value without providing the parameter value to a clinical system.

In the present invention, a medical device authorization system is employed to associate software contained on a medical computing system/computer, such as an EP mapping and recording system, that pertains to a specific medical device, e.g., a catheter, connected to the computer such that the software is only utilized by the computer in conjunction with a catheter that is authorized for use with the computer. The authorization system utilizes an analog authorization waveform/signal that is mixed with the analog device/catheter measured signals transmitted to the computer. The authorization waveform distorts the measured signals in a manner that renders the signals able to be displayed by the system but unusable, unless the computer includes a signal filter operably connected to the device/catheter interface that is configured to remove the interfering authorization waveform from the measured signal.

A user verification system verifies that a user taking a remote medical test, such as a home sleep study, is the actual user that is supposed to be taking the test. One issue in home sleep studies is that it can be difficult to confirm that the user that wore the home sleep monitor is actually the user that was supposed to take the test. The user verification system includes a wrist strap that, once attached to the user, cannot be removed without being noted in the home sleep study results. A probe connector can connect to the wrist strap in such a manner that removal of the probe connector from the wrist strap is noted in the home sleep study results. The probe connector can connect to a probe, such as a pulse oximeter, and can connect to a recording device that logs the data received from the probe.

Provided is an ultrasound diagnostic apparatus capable of synchronizing emission of light from a light source device emitting light for generating a photoacoustic wave and reception in an ultrasound probe with high accuracy. The ultrasound diagnostic apparatus includes a sub-controller that has a synchronization signal generation unit and controls an ultrasound probe based on a first synchronization signal generated by the synchronization signal generation unit, an image generation unit that generates an ultrasound image based on a signal detected by the ultrasound probe, and a connector that has a synchronization signal line for transmitting a second synchronization signal generated in the synchronization signal generation unit and outputs the second synchronization signal to the outside through the synchronization signal line. The connector is configured such that a photoacoustic wave light source unit emitting light incident on a puncture needle having a photoacoustic wave generation unit is connectable.

Systems, devices and methods for advanced electrode management in neurological monitoring applications include receiving sockets configured to receive connectors having groups of electrodes. The physician is not required to manually map each electrode with its corresponding input channel. Electrodes are coupled to the corresponding input channels in groups through connectors having a unique identification (ID). The system is configured to read the unique ID of each connector and establish its identity. Based on the ID, the system configures itself to automatically correlate or associate each electrode with its corresponding input channel when the connectors are first inserted into the receiving sockets, and again if the connectors are removed and re-inserted into different positions in the receiving sockets, to insure the electrodes are always mapped to the same input channels.

A gatekeeper electronic signal can be generated by a patient sensor and/or in an intermediate device, such as an electrical cable, that is separate from a patient's physiological information electronic signal. The gatekeeper signal can be generated to indicate to a computer monitor that the sensor and/or cable is of the type that is compatible with, and/or usable with, such computer monitor, and/or that the sensor and/or cable is properly attached to the computer monitor. The gatekeeper signal can be created by an ambient temperature sensor on, or in electrical communication with, the patient monitor, and/or the gatekeeper signal can be created by a gatekeeper electronic signal generator to simulate an ambient temperature value. The gatekeeper signal can be separate from an electronic signal or plurality of signals that include patient physiological information, and the gatekeeper signal may not include any patient physiological information.

A system and method to help maintain quality control and reduce cannibalization of accessories and attached probes in a highly sensitive patient monitor, such as a pulse oximetry system. One or more attached components may have information elements designed to designate what quality control mechanisms a patient monitor should look to find on that or another component or designate other components with which the one component may properly work. In a further embodiment, such information elements may also include data indicating the appropriate life of the component.

A gatekeeper electronic signal can be generated by a patient sensor and/or in an intermediate device, such as an electrical cable, that is separate from a patient's physiological information electronic signal. The gatekeeper signal can be generated to indicate to a computer monitor that the sensor and/or cable is of the type that is compatible with, and/or usable with, such computer monitor, and/or that the sensor and/or cable is properly attached to the computer monitor. The gatekeeper signal can be created by an ambient temperature sensor on, or in electrical communication with, the patient monitor, and/or the gatekeeper signal can be created by a gatekeeper electronic signal generator to simulate an ambient temperature value. The gatekeeper signal can be separate from an electronic signal or plurality of signals that include patient physiological information, and the gatekeeper signal may not include any patient physiological information.

The present invention discloses a holder carrying thereon a sensor to measure a physiological signal of an analyte in a biological fluid, wherein the sensor has a signal detection end and a signal output end, and the holder includes an implantation hole being a channel for implanting the sensor and containing a part of the sensor, a fixing indentation containing the sensor, a filler disposed in the fixing indentation to retain the sensor in the holder, and a blocking element disposed between the implantation hole and the fixing indentation to hold the sensor in the holder and restrict the filler in the fixing indentation.