Abstract:
A guide wire for measuring physiological characteristics inside a body includes a sensor (14) for monitoring the physical variable and for forming an output signal characteristic for the value of the physical variable. The sensor is connected to a first electrical potential of an electronic unit (22) via an electrical wire (11) extending along the guide wire. An internal body electrode (17) is connected to the sensor (14) and is in contact with body fluids surrounding the sensor circuit. The guide wire (10) is inserted into a vessel of the body (25), and a second electrode (21) is applied near the internal body electrode, and the sensor circuit is powered by a second potential of the electronic unit (22) via a part of the body.
Abstract:
The invention relates to a device for measuring pressure, temperature and/or flow velocity. It includes a sensor (6) with a sensor support body (13) provided with a diaphragm (15) covering a cavity (14) formed in the support body (13). A pressure sensitive element (41) is mounted on the diaphragm, for recording pressure. Furthermore, a temperature sensitive resistor (42) is mounted in the vicinity of the pressure sensitive resistor and has a known temperature dependence, for recording temperature. It also includes an electrical circuit (43, 44, 45, 46) selectively outputting signals from either of the pressure sensitive element and the temperature sensitive resistor.
Abstract:
A method and apparatus of creating a miniaturized source of radiation and delivering radiation to a location such as therapy location. The radiation source comprises a member made of a material emitting electrons when energy is supplied to the member. There is an electron retarding member disposed opposite the electron emitting member, and the electron retarding member is made of a material emitting ionizing radiation when electrons are retarded therein. The radiation source is further provided on an elongated member in the distal region thereof, and the elongated member is insertable into the body.
Abstract:
The invention relates to a sensor and guide wire assembly (21) for intravascular measurements of physiological variables in a living body, comprising a core wire (22), a first coil (23), a jacket (24), and a second coil (25). The jacket (24) comprises a first end portion (24a), which is crimped onto the core wire (22) and over which a portion of the first coil (23) is threaded, and a second end portion (24b), which is crimped onto the core wire (22) and over which a portion of the second coil (25) is threaded.
Abstract:
The present invention provides methods for adding functional hydrophobic, charge, polar, and other structural groups on antimicrobial compounds for enhancing the physicochemical properties of the antimicrobial compounds, thereby creating novel antimicrobial analogs with enhanced functions.
Abstract:
A transmitter unit with an attachable energy source is provided for a sensor guidewire. The transmitter unit is adapted to be connected to a proximal end of a sensor guidewire provided, at its distal end, with a sensor to measure a physiological parameter inside a patient. In some embodiments, the transmitter unit is adapted to wirelessly communicate by a communication signal with a communication unit, arranged in connection with an external device, in order to transfer measured physiological data to the external device. The attachable energy source can be a battery pack or battery holder provided with connecting electrical connecting surfaces. Preferably, the connection is protected from penetrating fluids by a protective seal.
Abstract:
There is a sensor guide wire (1) for intravascular measurements of physiological variables in a living body. The sensor guide wire (1) comprises at least two elongate sections, a first tubular elongate section (2) being tubular in the longitudinal direction of the sensor guide wire (1), and a second elongate section (3) that is adapted to be inserted a predetermined distance (5) into said first tubular section (2), a sensor element (10) provided in the distal part of said sensor guide wire (1), for measuring the physiological variable and to generate a sensor signal in response to said variable, at least one signal transmitting cable connected to the sensor element (10) to transmit sensor signals to a male connector provided in the proximal part of said sensor guide wire (1). The tubular section (2) is provided with at least one through-going opening (4) in a direction perpendicular to the longitudinal direction of the guide wire (1) and positioned a second predetermined distance (6) from one end of the tubular section (2), wherein the guide wire (1) comprises a locking member (7) to be fitted into the opening (4) in order to join the sections (2, 3) together when the second elongate section (3) is inserted into the tubular section (2).
Abstract:
Rapid exchange guide unit comprising an elongated support member 3, and a guide wire member (11) provided with a guide wire lumen (13) having a distal guide wire opening (15) and a proximal guide wire opening (17), the guide wire lumen is arranged close to the distal end of said elongated support member, and is adapted to receive a guide wire. The rapid exchange guide unit further comprises at least one sensor (19) arranged close to the distal end of the elongated support member, and being adapted to measure a parameter in a living body, and to generate a sensor signal in dependence of the measured parameter. The sensor signal is applied to a signal processing unit adapted to process the sensor signal and to generate a processed sensor signal.
Abstract:
A sensor and guide wire assembly (21; 41; 61; 81) for intravascular measurements of a physiological variable in a living body includes a sensor element (22; 42; 62; 82) mounted at a distal sensor portion (23; 43; 63; 83) of a guide wire (24; 44; 64; 84), wherein the sensor portion exhibits a maximal cross-sectional dimension which is larger than a maximal cross-sectional dimension of guide wire portions (28, 30; 48, 50; 68, 70) located proximally of the sensor portion.
Abstract:
The invention relates to a sensor (23) adapted for a sensor and guide wire assembly for intravascular measurements in a living body, wherein the sensor (23) comprises a pressure sensitive part (24) and an electronic part (25), said pressure sensitive part (24) comprising a first chip (26) provided with at least one pressure sensitive device (27) and at least one piezoelectric element (35), and said electronic part (25) comprising a second chip (28) provided with at least one electric circuit, and wherein said pressure sensitive part (24) and electronic part (25) are spatially separated from each other and are electrically connected with at least one electrical lead (29).