摘要:
An eavesdropping arrangement for acquiring a measured physiological variable of an individual includes a receiver and a communication interface in a housing separate from the receiver. The communication interface is positioned along a communication link between a first sensor, which is configured to measure aortic blood pressure and to provide a signal representing measured aortic blood pressure, and a central monitoring device configured to monitor the measured aortic blood pressure. The communication interface includes a connection to the communication link that permits the communication interface to eavesdrop on the signal representing measured aortic blood pressure such that information representing measured aortic blood pressure is sent to the receiver while allowing the central monitoring device to receive and use the signal representing measured aortic blood pressure.
摘要:
A measurement system includes: a sensor wire comprising an insertable portion configured to be inserted in a blood vessel of a patient's body; a sensor disposed at the insertable portion at a distal end of the sensor wire, wherein the sensor is configured to provide an output indicative of a temperature in the blood vessel of the patient's body, when inserted inside the blood vessel of the patient's body; and a transceiver unit configured to transfer information related to the output of the sensor to an external communication module using a frequency hopping technique. The transceiver unit comprises a housing adapted to be connected to a proximal end of the sensor wire and configured to remain external to the patient's body.
摘要:
A guide wire for biological pressure measurement includes: a tube extending along an axial direction of the guide wire, wherein the tube includes a circumferential wall and defines a proximal-end opening and a distal-end opening; and a pressure sensor configured for biological pressure measurement, wherein at least a portion of the pressure sensor is mounted within the tube, and wherein the pressure sensor comprises a pressure sensor transducer. The circumferential wall of the tube includes exactly three openings configured for fluid and gas ingress and egress extending radially therethrough.
摘要:
Described herein are methods of forming hydrogels comprising combining (a) a water-soluble polymer comprising thiol groups, and (b) a water-soluble metal salt in an aqueous solution. The hydrogels form rapidly. Hydrogels and related methods, uses, and products also are described.
摘要:
An eavesdropping arrangement for acquiring a measured physiological variable of an individual includes a receiver and a communication interface in a housing separate from the receiver. The communication interface is positioned along a communication link between a first sensor, which is configured to measure aortic blood pressure and to provide a signal representing measured aortic blood pressure, and a central monitoring device configured to monitor the measured aortic blood pressure. The communication interface includes a connection to the communication link that permits the communication interface to eavesdrop on the signal representing measured aortic blood pressure such that information representing measured aortic blood pressure is sent to the receiver while allowing the central monitoring device to receive and use the signal representing measured aortic blood pressure.
摘要:
An interface to connect sensor equipment and a physiological monitor includes a first connector to receive power from a first channel of the monitor and a second connector to receive power from a second channel of the monitor. The power from each of the first and second channels of the monitor is combined within the interface. The interface further includes a third connector to provide the combined power to the sensor equipment; a voltage converter to rescale the voltage of the combined power that is provided to the sensor equipment; and a scaling circuit to reduce the voltage of a signal representing a measured physiological parameter. The signal representing the measured physiological parameter is sent from the sensor equipment to the monitor. The interface is advantageous to allow sensor equipment to be sufficiently powered by a monitor that would not typically provide enough power.
摘要:
A sensor element comprises a sensor section comprising a sensor unit configured to measure a physiological variable or any other signal in a living body and to generate a sensor signal in response to the variable or other signal, and a bond section comprising contact members configured to electrically connect at least one signal transmitting microcable. The bond section is coated with an electrically insulating material and the sensor unit is left uncoated. The sensor element may further comprise an intermediate section between the sensor section and the bond section. The intermediate section includes electric connection lines configured to connect the contact members to the sensor unit. The intermediate section is also coated with the electrically insulating material.
摘要:
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.
摘要:
A method of determining one or more diagnostic metrics to assess a blood vessel using intravascular data includes: sampling a sensor of an intravascular data collection probe disposed in the blood vessel during a pullback of the intravascular data collection probe through the blood vessel to obtain sampled distal pressure (Pd) values; receiving, at an intravascular data processing system, the sampled distal pressure (Pd) values and proximal pressure (Pa) values; determining sets of Pd/Pa ratios, each set including Pd/Pa ratios that are determined through an entirety of one heart cycle; determining minimum Pd/Pa ratios, each of which is a minimum within one of the sets of Pd/Pa ratios over the entirety of the corresponding heart cycle; and controlling a display system to generate a plot of a moving average of the minimum Pd/Pa ratios over time during the pullback.
摘要:
A system includes: an aortic pressure sensor configured to measure aortic blood pressure of an individual; a distal sensor configured to measure a parameter in a blood vessel; a receiver configured to receive both (i) a signal representing the measured aortic blood pressure value, and (ii) a signal representing the parameter, the receiver comprising a display configured to display data that is based on at least the measured aortic blood pressure value and the measured parameter; and a communication interface configured to (i) receive a signal representing the measured aortic blood pressure value from the aortic pressure sensor via a wired connection, (ii) provide a signal representing the measured aortic blood pressure value to a monitoring device via a wired connection, and (iii) send a signal representing the measured aortic blood pressure value to the receiver via a wireless connection.