Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/07—Endoradiosondes
  • A61B5/076—Permanent implantation
• • 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
  • A61B5/06—Devices, other than using radiation, for detecting or locating foreign bodies ; Determining position of diagnostic devices within or on the body of the patient
  • A61B5/061—Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/06—Devices, other than using radiation, for detecting or locating foreign bodies ; Determining position of diagnostic devices within or on the body of the patient
  • A61B5/061—Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body
  • A61B5/062—Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body using magnetic field
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/48—Other medical applications
  • A61B5/4836—Diagnosis combined with treatment in closed-loop systems or methods
  • A61B5/4839—Diagnosis combined with treatment in closed-loop systems or methods combined with drug delivery
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
  • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
  • A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
  • A61B5/6862—Stents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
  • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
  • A61B5/6847—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive mounted on an invasive device
  • A61B5/6865—Access ports
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
  • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
  • A61B5/6867—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive specially adapted to be attached or implanted in a specific body part
  • A61B5/6876—Blood vessel
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
  • A61B5/6846—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be brought in contact with an internal body part, i.e. invasive
  • A61B5/6879—Means for maintaining contact with the body
  • A61B5/6882—Anchoring means
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
  • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
  • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
  • A61B1/00147—Holding or positioning arrangements
  • A61B1/00158—Holding or positioning arrangements using magnetic field
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods
  • A61B2017/00017—Electrical control of surgical instruments
  • A61B2017/00022—Sensing or detecting at the treatment site
  • A61B2017/00039—Electric or electromagnetic phenomena other than conductivity, e.g. capacity, inductivity, Hall effect
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
  • A61B90/06—Measuring instruments not otherwise provided for
  • A61B2090/061—Measuring instruments not otherwise provided for for measuring dimensions, e.g. length

Definitions

• the invention relates to a measuring device for recording medical parameters, which can be accommodated in a body cavity, in particular a blood vessel, with at least one sensor and a holding device.
• sensors that directly obtain measured values from relevant parameters in the human body and can analyze them immediately as required are becoming increasingly important.
• the main area of application of such sensors is in the analysis of blood values or blood vessels (values for glucose, blood pressure, temperature, pH, blood analysis in general, etc.), which means that the sensor must have direct contact with the medium to be analyzed.
• blood values or blood vessels values for glucose, blood pressure, temperature, pH, blood analysis in general, etc.
• the problem here is that the sensors available per se can be inserted into the respective vessels, but are difficult to anchor there, in particular if they are blood vessels, without interrupting or substantially impairing the blood flow, and that after the measurement or Series of measurements the sensor should be removed frequently. There is therefore the task of providing a measuring device which can be temporarily or permanently fixed within vessels and can easily be re-explanted if necessary.
• the holding device has at least a first and a second magnetic element, of which 'is at least one of a magnet and of which respectively one inside and one is arranged outside of the body cavity, and that the measuring device can be fixed in the body cavity by the holding device.
• this fixation can simply be removed by removing the magnetic element arranged on the outer vessel wall and the measuring device can then be explanted again.
• either one of the two is magnetic
• Elements a magnet and the other a part made of a ferromagnetic material or both magnetic elements are designed as a magnet.
• the sensor is fixed with the magnetic element arranged inside the body cavity connected is.
• the magnetic element arranged outside the body cavity is expediently the magnet. From the outer wall of the vessel, the latter is able to fix the sensor provided with the other magnetic element.
• This outer magnet can, for example, both be applied to the surface of the body and, in particular, first be implanted and fixed subcutaneously, whereupon the sensor with the magnetic
• the measuring device can be moved by rearranging or shifting the magnet.
• the sensor with the magnetic element can be shifted and moved to a new one in a simple manner by moving the magnet along the outer vessel wall
• the measuring device according to the invention is expediently insertable into the body cavity or attachable to the outer wall thereof, both with regard to the sensors with the magnetic elements and with regard to the magnets, by means of an implantation set, a catheter or the like.
• the magnetic element arranged outside the body cavity is moreover particularly preferably applicable to the surface of the body itself or subcutaneously.
• the measuring device can therefore advantageously be at least partially encased or cast in a flexible, biocompatible material, in particular in silicone. As a result, the measuring device can also adapt particularly well to the respective vessel wall.
• the electronic components arranged on it can be provided with an additional coating.
• This coating can also contribute to an increased compatibility of the foreign body located in the body cavity.
• a voltage supply in particular a battery or an accumulator.
• the measuring device can be provided in the area of the sensor or one of the magnetic elements with an electronic memory element for the intermediate storage of the sensor-recorded data, so that the recorded values are only in more or can be fed from this storage element to an external storage and evaluation unit at regular intervals.
• the measuring device can be provided in the area of the sensor or one of the magnetic elements with an electronic memory element for the intermediate storage of the sensor-recorded data, so that the recorded values are only in more or can be fed from this storage element to an external storage and evaluation unit at regular intervals.
• the measuring device can be provided in the area of the sensor or one of the magnetic elements with an electronic memory element for the intermediate storage of the sensor-recorded data, so that the recorded values are only in more or can be fed from this storage element to an external storage and evaluation unit at regular intervals.
• Area of the sensor or one of the magnetic elements can also be provided with its own evaluation unit, so that when the data correspondingly already processed in this evaluation unit is called up, the prepared results of the respective measurements are already available, which then permit rapid evaluation and diagnosis.
• sensors are used to record values of the pressure, the sugar level, the hemoglobin content, the oxygen and
• the measuring device is provided with at least one storage device for accommodating a substance to be introduced into the body cavity, in particular a medicament.
• the contents of the storage device can then be emptied into the body cavity at a desired point in time.
• several storage devices can also be used simultaneously and one or more sensors can be assigned to them when they are used.
• An advantageous further development can consist in that a dosing element for the controlled delivery of the substance is provided on the storage device, so that it can be released for example at regular intervals and uniform doses.
• the measuring device is particularly preferred, in which it is part of a control circuit and the dosing element releases the substance in response to a measured value detected by a sensor, so that, for example, only a short time passes in an emergency before the administration of a counteractive medication ,
• a transmission device for the further processing and evaluation of the data of the measured values that are recorded and possibly buffered or already evaluated by the sensors, by means of which the measuring device can be connected to a transmitting, receiving and evaluating unit arranged outside the body is.
• the transmission device can be designed both as an interface at which data is passed on or as a separate transmission unit.
• the transmission device has a radiation output for introducing electromagnetic radiation of different frequencies, in particular visible light, into the interior of the body cavity.
• the measuring device can be particularly advantageously coupled to the transmitting, receiving and evaluating unit via at least one glass fiber cable.
• a further embodiment of the measuring device can be secured with an additional safeguard against unwanted displacement within the body cavity.
• the measuring device is provided with at least one additional fastening means, in particular a thread holder.
• the measuring device is arranged on a stent cage and can thus be used in combination with this vessel-expanding or stabilizing element, which in any case requires implantation at the corresponding point.
• the measuring device is expediently integrated into the lattice structure of the stent cage.
• the measuring device has several sensors connected with magnetic elements, which are arranged, in particular evenly distributed, in one plane of the stent cage.
• the measuring device according to the invention described above can be used for analysis in many places in the human body and application of medication or, for example, heat.
• the locations of use include the stomach, intestine and esophagus, the urological and gynecological area, but also the brain.
• 2a, 2b show a longitudinal and a cross section through a body cavity in the interior of which there is a stent cage with a measuring device arranged thereon.
• the measuring device 1 has a sensor 3 for detecting a parameter and is fixed on the vessel wall 6 by means of a holding device 4.
• the holding device 4 is formed by a first and a second magnetic element 5, here in each case a magnet, which are located on both sides of the vessel wall 6.
• the part of the measuring device 1 located on the inside of the vessel wall 6 consists of a sensor 3 cast in a flexible, flat, boat-like shape and a likewise cast-in magnet which is connected to it. Due to its shape, the sensor 3 with its magnetic element 5 does not represent any mechanical hindrance to the blood flowing in the artery.
• On the outside of the vessel wall 6 there is also in approximately the same longitudinal extent a holding magnet is attached as a magnetic element 5, which holds the sensor 3 with the magnetic element on the other side of the vessel wall 6 in position.
• both the part of the measuring device 1 located on the inside and on the outside of the vessel wall 6 are each provided with a thread holder 7 as additional security.
• the threads of the thread holder 7, each guided through an eyelet of the corresponding part, are connected to the outside of the vessel by knotting.
• the measuring device 1 shown in FIG. 1c only has a thread holder with its part arranged on the inside of the vessel, the thread of which in turn is guided through an eyelet on the part.
• the end of the thread facing away from the part is provided with an anchor-like piece, which fixes the thread there by its position on the outside of the vessel wall 6.
• FIG. 1 shows that in the measuring device 1 shown there there is a storage device 8 between the magnetic element 5 and the sensor 3, which is provided for receiving a medicament which is to be released into the bloodstream.
• FIG. 1 shows that in the measuring device 1 there, an electronic memory element 9 is arranged in the area of the magnetic element 5 on the outer wall of the vessel as a buffer for the sensor-acquired data.
• the measuring device 1 has on its part located in the interior of the body cavity 2 a transmission device 10, from which the interface for coupling visible light through fiber optic cable 11 can be seen in FIG. 2a shows the longitudinal section of a blood vessel as body cavity 2, which is widened by a stent cage 12 stretched therein.
• a measuring device 1 with two opposing sensors 3 and magnetic elements 5 is integrated into the lattice structure of the stent cage 12 in that they are attached to the struts of the lattice structure.
• a magnet is arranged on the outside of the vessel wall 6 and, through its interaction with the magnetic elements 5 of the measuring device 1, fixes this and the stent cage within the vessel.
• 2b shows a representation of the same arrangement in a cross section through the body cavity 2.
• the invention thus consists of a measuring device 1 for recording medical parameters in the human body, which can be accommodated in a body cavity 2, in particular a blood vessel, with at least one sensor 3 and a holding device 4.
• the measuring device is characterized in that the holding device 4 has at least a first and a second magnetic element 5, at least one of which is a magnet, and one of which is arranged inside and one outside the body cavity 2 and that the measuring device 1 can be fixed in the body cavity 2 by the holding device 4.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Biomedical Technology (AREA)
• Animal Behavior & Ethology (AREA)
• Veterinary Medicine (AREA)
• Public Health (AREA)
• General Health & Medical Sciences (AREA)
• Heart & Thoracic Surgery (AREA)
• Pathology (AREA)
• Molecular Biology (AREA)
• Surgery (AREA)
• Medical Informatics (AREA)
• Biophysics (AREA)
• Physics & Mathematics (AREA)
• Vascular Medicine (AREA)
• Human Computer Interaction (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Cardiology (AREA)
• Transplantation (AREA)
• Chemical & Material Sciences (AREA)
• Bioinformatics & Cheminformatics (AREA)
• Medicinal Chemistry (AREA)
• Pharmacology & Pharmacy (AREA)
• Computer Networks & Wireless Communication (AREA)
• Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Applications Claiming Priority (2)

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• 2004
  • 2004-05-13 DE DE102004023527A patent/DE102004023527A1/de not_active Withdrawn
• 2005
  • 2005-04-06 EP EP05739503A patent/EP1641387A1/de not_active Withdrawn
  • 2005-04-06 US US10/578,135 patent/US20070244373A1/en not_active Abandoned
  • 2005-04-06 JP JP2007511900A patent/JP2007536957A/ja active Pending
  • 2005-04-06 WO PCT/EP2005/003594 patent/WO2005110205A1/de not_active Ceased

Non-Patent Citations (1)

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