[go: up one dir, main page]

WO2008145329A1 - Dispositif et procédé de détection d'un paramètre dépendant de la pression - Google Patents

Dispositif et procédé de détection d'un paramètre dépendant de la pression Download PDF

Info

Publication number
WO2008145329A1
WO2008145329A1 PCT/EP2008/004182 EP2008004182W WO2008145329A1 WO 2008145329 A1 WO2008145329 A1 WO 2008145329A1 EP 2008004182 W EP2008004182 W EP 2008004182W WO 2008145329 A1 WO2008145329 A1 WO 2008145329A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
dependent parameter
sensor element
medium
wall structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2008/004182
Other languages
German (de)
English (en)
Inventor
Anton Grabmaier
Thomas Van Den Boom
Uta Dahmen
Olaf Dirsch
Gudrun Stockmanns
Reinhard Viga
Daniel Balzani
Dominik Brands
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Universitaet Duisburg Essen
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Universitaet Duisburg Essen
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universitaet Duisburg Essen, Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Universitaet Duisburg Essen
Publication of WO2008145329A1 publication Critical patent/WO2008145329A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08—Means for indicating or recording, e.g. for remote indication
    • G01L19/086—Means for indicating or recording, e.g. for remote indication for remote indication
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0031—Implanted circuitry
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording for evaluating the cardiovascular system, e.g. pulse, heart rate, blood pressure or blood flow
    • A61B5/021—Measuring pressure in heart or blood vessels
    • A61B5/0215—Measuring pressure in heart or blood vessels by means inserted into the body
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0001—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means
    • G01L9/0002—Transmitting or indicating the displacement of elastically deformable gauges by electric, electro-mechanical, magnetic or electro-magnetic means using variations in ohmic resistance

Definitions

  • the present invention relates to an apparatus and method for detecting a pressure-dependent parameter, and more particularly to a method for locally determining pressure and pressure gradients in embedded, flexible, small-diameter, fluid-carrying conduits.
  • a tube-bound pressure measuring system (catheter) is hydrostatically coupled to the arterial vascular system via an arterial approach.
  • a wall penetration takes place and a line is embedded, for example, in a blood vessel in a body - a so-called catheter endometer.
  • the puncture site in the skin is a permanent and clinically relevant source of infection.
  • Hose and cable systems between the transducer and the pressure transducer affect the patient and may cause injury, for example, by "getting stuck.” The patient is mobilizing significantly reduced with the help of nursing staff and in his later independent mobility. Measuring errors caused by a dislocation of the pressure catheter make the method moreover susceptible to interference.
  • blood pressure parameters are typically determined indirectly by means of an inflatable pressure cuff with a manometer placed around the upper arm.
  • This is a standard method in medicine for extraluminal (non-vascular-invasive) blood pressure measurement and is also known as the Riva-Rocci method, and thus constitutes an indirect method of measuring blood pressure. It is disadvantageous in that it has a low accuracy, an integral value Provides large time ranges and no permanent measurement (long-term measurement) time-resolved allows.
  • Mobile device embodiments of the method in a long-term monitoring also have the serious disadvantage that the inflation of the cuff is perceived as annoying, especially during resting phases.
  • the method is susceptible to interference, for example as a result of a slipped-over arm sleeve, and the measurement is intermittent, so that it does not permit continuous pressure value detection.
  • the present invention has the object to provide a device and a method for pressure measurement by means of a sensor element in a medium, wherein the sensor element is separated from the medium and thus the pressure measurement is easy to handle and low in risk.
  • the present invention is based on the finding that the pressure in a medium can be determined by a pressure-dependent parameter of a conduit wall structure surrounding the medium when a sensor element is embedded in the conduit wall structure.
  • the pressure-dependent parameter is detected by the sensor element and provided wirelessly by a transmission device.
  • Embodiments of the present invention relate to medical applications and in particular to a blood pressure measurement in a vessel or blood vessel having a vessel wall (conduit wall structure), wherein the sensor element is designed as a pressure measuring implant and is applied in a vessel wall.
  • the pressure measuring implant detects pressure-sensor-based mechanical stress in the vessel wall, or a change in wall properties of the pipe or the vessel.
  • the wall tension is functionally related to the blood pressure prevailing in the vessel. Namely, when the blood pressure within the vessel increases, he also exerts an increased pressure on the vessel wall, which then forms an increased mechanical stress.
  • the blood pressure can be determined from the acquired measured variable (vascular tension) and then transmitted wirelessly.
  • the transmission can be RFID-based, for example happen. There are various possibilities for this, which will be discussed in more detail below.
  • One possibility is to utilize an inductive coupling of the transmission device to an extracorporeal receiving station (eg on the belt of a patient).
  • the RFID technology is currently used in particular in the areas of automatic identification of goods, persons, goods and animals.
  • the RFID technology is a radio-based, contactless identification method, which originally used radio frequencies in the radio frequency range (100 kH to some 10 MHz), but now also frequencies up to the microwave range are used.
  • the RFID systems are advantageous in that they have high transmission capacities, are insensitive to environmental influences and soiling, and provide the possibility of reading out many transponders simultaneously in the case of a long range.
  • this technology allows, for example, to carry out a blood pressure measurement at different points of the body or a vessel in parallel.
  • a transponder In RFID technology, a transponder is the actual label, which carries information and communicates with a stationary or mobile reader or a transceiver or generally communication device. Depending on the system configuration, this communication allows the transponder to be read and written, which gives the system additional flexibility. A subsequent change of stored data is thus easily possible.
  • a particular advantage of RFID systems is the ability to use passive transponders that do not require their own power supply and therefore can be built compactly. This option makes RFID technology particularly attractive for medical applications. Before the medical applications are described, the RFID technology will be discussed in more detail.
  • An RFID system typically has at least one reader or communication device and one or more transponders. Both the reader and the transponder each have an antenna that significantly affects a range of communication between the reader and transponder.
  • the transponder is in the vicinity of the antenna of the reader, both can exchange data (transponder and reader).
  • the reader also transmits energy to the transponder in addition to the data.
  • Inside the transponder there is an antenna coil for this purpose, which can be designed, for example, as a frame or ferrite antenna.
  • the reader To operate the transponder, the reader first generates a high-frequency alternating magnetic field by means of its antenna.
  • the antenna also includes a multi-turn coil.
  • the field of the reader generates an induction voltage in the coil of the transponder. This induction voltage is rectified and is ready to power the transponder.
  • a capacitance is generally connected, so that a parallel resonant circuit is formed.
  • the resonant frequency of this resonant circuit corresponds to the transmission frequency of the RFID system.
  • the antenna coil of the reader is brought into resonance by an additional capacitor in series or parallel connection.
  • a clock frequency is derived, which is a memory chip or a microprocessor of the transponder as a system clock available.
  • the data transmission from the reading device to the transponder is effected by a so-called amplitude sampling, in which the high-frequency alternating magnetic field is switched on and off.
  • the reverse data transfer from the transponder to the reader uses the characteristic of the transformer coupling between the reader antenna and the transponder antenna.
  • the reader antenna is a primary coil
  • the transponder antenna is a secondary coil of a transformer formed by reader antenna and transponder antenna. This transfor- mation coupling between the primary coil and the secondary coil can now be exploited to transmit information from the transponder (for example by changing its inductance) to the primary coil of the reader.
  • the RFID technology is thus ideally suited for interrogating a measured value (for example blood pressure or a pressure-dependent parameter) from an implant with a sensor element or regularly (wirelessly) detecting it and optionally transmitting it regularly to a communication device.
  • a measured value for example blood pressure or a pressure-dependent parameter
  • the pressure in conduits is measured without penetrating a conduit wall (medically extraluminal).
  • a pressure-dependent parameter of the conduit wall which can be, for example, a wall tension or another wall property and can be measured by a pressure sensor applied to the wall ⁇ medically: intraluminally).
  • Information of the measured quantity (for example of the pressure) can be modulated onto a transport medium that penetrates the embedding medium of the conduit (the human body, for example).
  • an RFID-based system with an inductive transmission of measured variables can be used for this purpose.
  • the measured quantity is derived from the transport medium and scaled to a print size. This can be, for example, by an inductive derivative of the measured variable impressed by laser modulation. This allows an intelligent transfer in a pressure reading.
  • embodiments of the present invention comprise a sensor element which is inserted into a conduit wall is embedded structure and is separated from the guided in the conduit medium and detects a pressure-dependent parameter. Furthermore, a transmission device for the wireless provision of the pressure-dependent parameter detected in the sensor element is coupled to the sensor element. In further embodiments, the sensor element detects a mechanical pressure, a mechanical stress or an expansion in the conduit wall structure as a pressure-dependent parameter. Furthermore, it is possible to detect a temperature (for example by means of a temperature sensor) and thus to detect or detect and interrogate fever or fever courses.
  • the transmission device can have, for example, a transponder for transmitting the pressure-dependent parameter, wherein the transponder can either be read out inductively or is specifically queried by an interrogation signal, so that the transponder transmits the pressure-dependent parameter in a response signal.
  • the transmission device has a transmission device, wherein the transmission device transmits the pressure-dependent parameter.
  • a device according to the invention can have an energy storage medium, wherein the energy storage medium provides an energy supply to the sensor element and / or the transmission device.
  • the energy storage medium may have, for example, a battery or a rechargeable battery.
  • Embodiments of the present invention are particularly applicable to conduit wall structures that include a flexible material and are embedded in a surrounding material.
  • the conduit wall structure may further comprise a layer structure having a plurality of layers, wherein the pressure dependent parameter in different layers may have different dependencies of pressure so that measurements in different layers may be made.
  • the flexible medium can be Ways a blood vessel in an organism, wherein the sensor element is implanted in the wall structure of the blood vessel.
  • Embodiments of the present invention further comprise a monitoring system for a medium-carrying line having a conduit wall structure, wherein the monitoring system comprises a device according to the invention for detecting a pressure-dependent parameter and further comprises a communication device which is designed to provide the information provided by the transmission device of the device according to the invention receive pressure-dependent parameters.
  • the communication device has a transmission unit for transmitting an interrogation signal, and the interrogation signal can be detected and answered by a transponder, the response signal having the pressure-dependent parameter.
  • the communication device can also transmit the interrogation signal at prescribed time intervals (fixed or variable) so that the pressure-dependent parameter can be transmitted by the transponder at the predetermined time intervals.
  • the pressure-dependent parameter is in a certain relationship to the pressure, wherein the particular relationship, for example, depends on the material of the sidewall structure and can be determined experimentally.
  • the parameters also include individual measured values recorded by the sensor or a series of measured values or also already prepared measured values.
  • the specific relationship can be exploited by an evaluation unit in order to determine the pressure therefrom.
  • the evaluation unit can furthermore be assigned to or arranged in a transponder or a communication device.
  • a sensor system as components to be implanted a pressure sensor, an evaluation and an RFID telemetry unit (one of the RFID systems described above) with receiving coil on.
  • a reading station (reading device) with Meßußkonstruktions-, evaluation and recording unit may be present.
  • Embodiments of the present invention also include a method of detecting a pressure dependent parameter in a conduit wall structure of a conduit carrying a medium, the method comprising disposing a sensor element in the conduit wall structure, and the sensor element being disposed separate from the medium pressure-dependent parameter and provision of the pressure-dependent parameter for a wireless transmission.
  • the inventive method may further comprise arranging a sensor element in the wall structure of a blood vessel of an organism, and the pressure-dependent parameter may be transmitted in response to an interrogation signal.
  • embodiments of the present invention have a number of advantages.
  • Significant therapeutic advances include the use of a blood pressure measurement system that eliminates the risk of catheter infection, blood pressure cuff (dislocation risk), and tubing (immobility, risk of injury).
  • This allows, for example, differentiated radiovascular therapies to be performed outside of the expensive intensive care unit under "normal conditions" and longer term, in particular the need for a blood pressure transducer connected to a portable monitoring device, which can be attached to a patient's belt, for example
  • a once-implanted system unlike external measurement methods such as the automatically-actuated blood pressure cuff, does not make a noticeable difference in quality of life and mobility the long-term use is not affected.
  • the present invention provides a method and apparatus for a sensor system that allows for non-vasospasm (extraluminal) detection of instantaneous blood pressure even in long-term mobile use, and thus allows long-term measurement of cardiovascular parameters - such as blood pressure measurement for intermittent detection and / or spontaneous hypertension.
  • Fig. Ia, b are two schematic sectional views of a
  • FIG. 2 shows a schematic illustration of a pressure measuring system according to an embodiment
  • FIG 3 is a detailed cross-sectional view of a pressure measuring system.
  • FIG. Ia and Ib show cross-sectional views of a medium-carrying line.
  • 1 a shows a cross-sectional view perpendicular to a flow direction of the medium 19 in the line
  • FIG. 1 b shows a cross-sectional view with a sectional plane in the direction of flow of the medium in the line.
  • FIG. 1 a shows the medium-carrying line with a line wall structure 18, in which a sensor element 10 is implanted and a transmission device 14 is arranged on the line wall structure 18.
  • the sensor element 10 is connected to the transmission device 14 (connection is not shown in this cross-sectional view).
  • FIG. 1b shows a further cross-sectional view, wherein the cross-sectional plane is perpendicular to the cross-sectional plane of FIG. 1a.
  • This cross-sectional view in turn shows the medium-carrying line with the conduit wall structure 18 and a medium 19 within the conduit wall structure 18.
  • the sensor element 10 is implanted, which is connected to the transmission device 14, wherein the transmission means 14 on a surface of the conduit wall structure 18 is arranged.
  • the sensor element 10 is separated from the medium 19 within the conduit wall structure 18 and, if the conduit wall structure 18 consists of a layer sequence, can be implanted in one or more of the layers of the layer sequence.
  • the sensor element 10 is designed to detect a mechanical stress in the conduit wall structure 18, wherein the mechanical stress in the conduit wall structure
  • the transmission unit may include a transponder having a coil and an antenna, and the coil and antenna may be disposed on an outer wall of the line structure 18, for example.
  • the monitoring system 30 has a communication device 1, a sensor device 10, which is located in a side wall structure 18 of a line which is a medium
  • a pressure measurement of the medium 19 within the conduit wall structure 18 takes place, for example, by means of a measurement of a mechanical tension of the conduit wall structure 18 by the sensor belt 10.
  • the sensor element 10 is coupled to the transmission device 14, which controls the pressure-dependent parameter exemplary stress of the conduit wall structure 18 - provides.
  • the transmission of the pressure-dependent parameter from the transmission device 14 to the communication device 1 can take place, for example, by means of a wireless transmission, wherein an electromagnetic signal can be taken as the propagation medium. There are various possibilities for this.
  • the transmission of the pressure-dependent parameter can take place by means of an inductive coupling in which, for example, a coil of the transmission device 14 is inductively coupled to a coil in the communication device 1 and in which the inductance of the coil in the transmission device 14 can be changed in accordance with the pressure-dependent parameter is.
  • the inductive coupling of the coil in the transmission device 14 to the coil in the communication device 1 now causes that in the communication device 1, the pressure-dependent parameter can be detected.
  • a further possibility consists in that the transmission device 14 has a transponder, so that upon interrogation of the communication device 1, the transponder transmits a signal, wherein the signal can contain the pressure-dependent parameter.
  • the interrogation signal of the communication device 1 can be taken simultaneously to the current or voltage supply of the transmission device 14 as well as to an electrical detection of the pressure-dependent parameter in the sensor element 10.
  • the transmission device 14 has a power supply and an active transmitter, so that the pressure-dependent parameter can be transmitted in the presence of an interrogation pulse or interrogation signal from the transmission device 14 or independently of it, for example, at predetermined intervals / intervals, so that the communication device 1 only needs to have a receiving part which detects the pressure-dependent parameter.
  • the power supply of the transmission device 14 may, for example, by means of done by a battery or by means of an energy generation, eg from the environment (as a result of temperature, movement, etc.).
  • Fig. 3 shows a detailed cross-sectional view with the same cross-sectional plane as in Fig. Ia, i. the cross section is executed perpendicular to a direction of movement of the medium 19.
  • the exemplary embodiment from FIG. 3 shows, on the one hand, remote “outer” system components (communication device 1) and “inner” system components 9 near the line.
  • the remote “outer” system components 1 have a control unit 2 for all system components, a measurement signal demodulation / reception unit 3, a measuring signal propagation unit 4, an interface to the operating and display unit 5, an output unit 6 (for the pressure measurement values) and optionally or optionally a power supply unit 7.
  • the line-related "inner” system components 9 have a sensor 10 or sensor element, or identical or different sensors, measuring electronics 11, central electronics 12, a transmission unit 13 and an energy storage / reception / generator unit 14.
  • the "internal" system components 9 close to the line are embedded in the conduit wall (conduit wall structure) 18 and / or in a conduit embedding material 20.
  • the line wall 18 may, for example, have a layer sequence with a first layer 15 with a first material, a second layer 16 with a second material up to a last layer 17 with a last material.
  • the conduit wall 18 has n layers, wherein the n layers can have materials with different or the same material parameters.
  • the medium 19 includes a lumen of pressurized fluid, and the embedding material 20 may be, for example, biological material in which a blood vessel is embedded.
  • the communication between the remote "outer" system component 1 and the "inner” system component 9 close to the line takes place, for example, by a transport medium 8 which is used for energy and / or measured variable transmission.
  • the pressure dependent parameter may also be another physical parameter (e.g., a temperature), chemical (e.g., pH), or medical parameter (e.g., oxygen saturation in tissue or other cardiovascular parameter).
  • the pressure can also be measured absolutely or relatively - for example as pressure changes as a function of time (at regular time intervals or continuously borrowed).
  • the pressure may also be detected as a function of location, e.g. using multiple sensor elements. According to embodiments of the present invention, this is easy to realize because a communication device 1 can query several transponders simultaneously or one after the other. Thus, the blood pressure in different blood vessels can be detected or along a blood vessel.
  • the transponders can be operated passively or actively and, alternatively, the transmission device 14 can have a transmitter, so that information can be transmitted continuously or at intervals of time (without the need for an interrogation signal).
  • the transmitter can be operated, for example, pulsed, so that a transmission at certain times (time intervals) takes place.
  • a detection of the blood pressure is controlled by a threshold value, ie only when a threshold value (upper or lower) is violated is a transmission of a warning signal and as long as the pressure-dependent parameter within a tolerance range is, can be dispensed with the transmission of the pressure-dependent parameter.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • General Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Cardiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Vascular Medicine (AREA)
  • Physiology (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

L'invention concerne un dispositif de détection d'un paramètre dépendant de la pression, d'une structure de paroi (18) d'une conduite de transport de fluide. Le dispositif comporte un élément de détection (10) destiné à être intégré dans la structure de paroi (18) de façon séparée du fluide (19) transporté dans la conduite, et un dispositif de transmission (14). L'élément de détection (10) est conçu pour détecter le paramètre dépendant de la pression et le dispositif de transmission (14) fournit sans-fil le paramètre dépendant de la pression, détecté, le dispositif de transmission (14) étant couplé à l'élément de détection (10).
PCT/EP2008/004182 2007-05-31 2008-05-26 Dispositif et procédé de détection d'un paramètre dépendant de la pression Ceased WO2008145329A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007025237 2007-05-31
DE102007025237.6 2007-05-31
DE102007038402A DE102007038402A1 (de) 2007-05-31 2007-08-14 Vorrichtung und Verfahren zum Erfassen eines druckabhängigen Parameters
DE102007038402.7 2007-08-14

Publications (1)

Publication Number Publication Date
WO2008145329A1 true WO2008145329A1 (fr) 2008-12-04

Family

ID=40030876

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/004182 Ceased WO2008145329A1 (fr) 2007-05-31 2008-05-26 Dispositif et procédé de détection d'un paramètre dépendant de la pression

Country Status (2)

Country Link
DE (1) DE102007038402A1 (fr)
WO (1) WO2008145329A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105188798A (zh) * 2013-04-03 2015-12-23 B·布莱恩·阿维图姆股份公司 用于识别透析器设备或其部件的装置和可用于此目的的传感器装置
CN106885648A (zh) * 2015-12-16 2017-06-23 宏光空降装备有限公司 气压记录仪

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009001901A1 (de) 2009-03-26 2010-09-30 Robert Bosch Gmbh Blutbehandlungsvorrichtung
BR112013026733A2 (pt) 2011-04-18 2016-09-06 Noviosense B V biossensor
EP2653868A1 (fr) 2012-04-18 2013-10-23 NovioSense B.V. Procédé de fabrication d'un biocapteur
WO2015172891A1 (fr) 2014-05-15 2015-11-19 Novalung Gmbh Dispositif de mesure médicotechnique et procédé de mesure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19907673A1 (de) * 1999-02-23 2000-08-31 Klaus Dietzel Meßeinrichtung mit Smarttransponder an Schlauchleitungen
US20030136417A1 (en) * 2002-01-22 2003-07-24 Michael Fonseca Implantable wireless sensor
EP1759632A1 (fr) * 2005-08-31 2007-03-07 Peter Dr.-Ing. Osypka Dispositif implantable pour la mesure des paramètres biométriques du sang
US20070118038A1 (en) * 2005-11-23 2007-05-24 Vital Sensors Inc. Implantable device for telemetric measurement of blood pressure/temperature within the heart

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20103434U1 (de) * 2001-02-28 2001-08-02 Dipl.-Ing. K. Dietzel GmbH, 04626 Löbichau Vorrichtung zum Messen in oder an Schlauchleitungen
DE102005035022A1 (de) * 2005-05-19 2006-11-23 Universitätsklinikum Freiburg Implantierbarer Blutdrucksensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19907673A1 (de) * 1999-02-23 2000-08-31 Klaus Dietzel Meßeinrichtung mit Smarttransponder an Schlauchleitungen
US20030136417A1 (en) * 2002-01-22 2003-07-24 Michael Fonseca Implantable wireless sensor
EP1759632A1 (fr) * 2005-08-31 2007-03-07 Peter Dr.-Ing. Osypka Dispositif implantable pour la mesure des paramètres biométriques du sang
US20070118038A1 (en) * 2005-11-23 2007-05-24 Vital Sensors Inc. Implantable device for telemetric measurement of blood pressure/temperature within the heart

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105188798A (zh) * 2013-04-03 2015-12-23 B·布莱恩·阿维图姆股份公司 用于识别透析器设备或其部件的装置和可用于此目的的传感器装置
CN106885648A (zh) * 2015-12-16 2017-06-23 宏光空降装备有限公司 气压记录仪

Also Published As

Publication number Publication date
DE102007038402A1 (de) 2008-12-24

Similar Documents

Publication Publication Date Title
DE69724781T2 (de) Stent zur druckmessung
DE69731644T2 (de) Positionsbestätigungsvorrichtung mit lern und testfunktionen
DE60205535T2 (de) Verankerungsmechanismus für implantierbaren medizinischen Telemetriesensor
DE60117355T2 (de) Vorrichtung zur Messung des intrakardialen Druckes
Coosemans et al. An autonomous bladder pressure monitoring system
US9775698B2 (en) Urinary prosthesis systems
DE60115588T2 (de) Telemetrische Abfrage- und Aufladevorrichtung für medizinischen Sensor
DE60206837T2 (de) Implantierbare medizinische Vorrichtung mit Verankerungselementen
WO2008145329A1 (fr) Dispositif et procédé de détection d'un paramètre dépendant de la pression
EP2034879B1 (fr) Système de détermination de la position d'un instrument médical
US8126538B2 (en) Method and apparatus for introducing endolymphatic instrumentation
DE60314379T2 (de) Implantierbare und wiederherausziehbare Sensorvorrichtung
AU754027B2 (en) System including an implantable device and methods of use for determining blood pressure and other blood parameters of living being
US10675435B2 (en) Extended-use valved urinary catheter
DE102007038801A1 (de) Implantierbare Druckmesseinrichtung und Anordnung zur Innendruckmessung in einem Blutgefäß
Wang et al. A novel intracranial pressure readout circuit for passive wireless LC sensor
CN103442632A (zh) Ecg辅助导管末端放置的再确认
KR20050013980A (ko) 신체내의 디바이스들에 대한 에너지 전달 증폭
EP1882484A2 (fr) Agencement de transmission
EP2244652A1 (fr) Marqueur de tissu
RU2571527C2 (ru) Неинвазивные системы контроля кровяного давления
EP3171751A1 (fr) Dispositif à pompe
CN101744620B (zh) 一种植入式无线颅内压自动监测系统
WO2006114157A2 (fr) Tensiometre
WO2010034546A1 (fr) Module capteur destiné à collecter des données physiologiques

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08758769

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08758769

Country of ref document: EP

Kind code of ref document: A1