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WO1998044841A1 - Dispositif de reperage visuel de vaisseaux sanguins - Google Patents

Dispositif de reperage visuel de vaisseaux sanguins Download PDF

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Publication number
WO1998044841A1
WO1998044841A1 PCT/SE1998/000672 SE9800672W WO9844841A1 WO 1998044841 A1 WO1998044841 A1 WO 1998044841A1 SE 9800672 W SE9800672 W SE 9800672W WO 9844841 A1 WO9844841 A1 WO 9844841A1
Authority
WO
WIPO (PCT)
Prior art keywords
photodetector
light source
skin
organ
vessel
Prior art date
Application number
PCT/SE1998/000672
Other languages
English (en)
Inventor
Håkan UGNELL
Lars-Göran LINDBERG
Ivo Fridolin
Åke ÖBERG
Original Assignee
Ugnell Haakan
Lindberg Lars Goeran
Ivo Fridolin
Oeberg Aake
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 Ugnell Haakan, Lindberg Lars Goeran, Ivo Fridolin, Oeberg Aake filed Critical Ugnell Haakan
Priority to AU70929/98A priority Critical patent/AU7092998A/en
Publication of WO1998044841A1 publication Critical patent/WO1998044841A1/fr

Links

Classifications

    • 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
    • A61B5/4887—Locating particular structures in or on the body
    • A61B5/489—Blood vessels

Definitions

  • the present invention relates to a device with a light source, photodetector and two motors, by which reflected light can be recorded on a number of spots on the skin or on an organ.
  • the reflected radient power from each spot varies depending on how much light is absorbed in different structures of the tissue, like e.g. vessels and the walls of the blood vessels.
  • the spots where the registration occurs are searched out with the aid of the two motors which move the light source and the photodetector in two or more longitudinal directions, whereby a colourcoded picture of vessel structures can be built up to be presented on a screen or a paper.
  • Ultrasound examinations of the arterial system plays an important role in non-invasive examination of patients with vascular diseases. Ultrasound examinations may also give information about the state of the blood vessel wall and the position and size of stenoses. New possibilities for studies within the cardiovascular system arouse when the magnetic resonance (MR) scanning technique was introduced.
  • MRI magnetic resonance imaging
  • MRA magnetic resonance angiography
  • the purpose of the invention is to:
  • identify blood vessels och subsequently record different physiological parameters locally on the skin or on organs, which gives unique possibilities that the above described methods do not possess. identify blood vessels with the aid of light on a vascular level, where existing ultrasound methods and laser-doppler technique have difficulties. This means that blood vessels with other dimensions and on other vascular depths than earlier, can be visualized. identify vessels on deeper levels in the tissue (>3mm), meaning a technically easier and above all a cheaper alternative compared to ultrasound methods in many clinical applications.
  • the technique may give rise to new possibilities for vessel diagnosing and vessel identification in a tissue bed which is not vascularly anatomically known.
  • a sensor which can sense reflected light in a number of spots which are distributed across a skin section, the vascular system under the sensor can be mapped and a "vascular map" can be plotted on a computer screen or a monitor.
  • CVC central vein catheter
  • the catheter is placed in vena jugularis interna above the right atrium.
  • the depth of the vein is approximately 10-12 mm.
  • the catheter makes nutrient supply and central pressure measurement possible. The latter is important for monitoring the blood volume of the patient, which in turn indicates how much liquid the patient needs.
  • vascular bed artery, vein or smaller vessel
  • the possibilities are given for local monitoring of different parameters in the vessel or the vascular area which has been identified.
  • the type of the vessel you may with the help of the light source-photodetector pairs which are situated above the veins or arteries, record the parameter which is of interest, e.g. pulsatile blood flow.
  • the technique may be used in order to guide the surgeon when it comes to separate damaged tissue from healthy, through monitoring of local pulsatile blood flow (PPG).
  • PPG local pulsatile blood flow
  • stenosis in the vascular tree you want to identify the vascular bed which is subjected to impaired blod supply.
  • the device is used in order to localize where on the foot, the arm or the organ where the reduced blood flow is. In that way you may also identify where the stenosis is located.
  • the device may be used for monitoring of the circulation over the specific artery.
  • Fig. 1 An example of equipment for optic identification
  • designation 1 is a light source
  • 2 is a photodetector
  • 3 is a PC (personal computer)
  • 4 is a monitor (computer screen etc)
  • 5 are motors and a holder for optical fibres which is movable in two directions perpendicular to each other
  • 6 are optical fibres which are mounted to 5
  • 7 is tissue in the form of skin or an organ
  • 8 is the distance between the light source and the photodetector
  • 9 is a blood vessel
  • 10 is the distance between the skin surface/organ surface and the blood vessel, that is depth
  • 11 are fibre characteristics concerning fibre diameter and fibre tip geometry which decide which distribution and capture angle the fibres possess.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Vascular Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

La présente invention concerne un dispositif de repérage visuel de vaisseaux sanguins. En effet, dans plusieurs cas où le diagnostic médical fait problème, il est intéressant d'être à même de repérer et de visualiser différents vaisseaux sanguins et les modifications les affectant, notamment au niveau des parois. On utilise à cet effet une source de lumière (1), un photodétecteur (2), ainsi qu'un système à moteur (5) de mesure de différents points et une combinaison spécifique de différentes géométries de mesure (8, 11, 11). On est ainsi capable d'enregistrer l'énergie de rayonnement réfléchie en provenance de différentes structures tissulaires (7), et par conséquent d'observer les vaisseaux sanguins (9) au moyen d'un écran de contrôle (4). Une fois que le repérage est fait, il est également possible d'utiliser cet équipement pour surveiller l'évolution de différents paramètres physiologiques.
PCT/SE1998/000672 1997-04-09 1998-04-09 Dispositif de reperage visuel de vaisseaux sanguins WO1998044841A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU70929/98A AU7092998A (en) 1997-04-09 1998-04-09 Device for optic identification of blood vessels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9701303A SE9701303L (sv) 1997-04-09 1997-04-09 Optisk teknik för identifiering av blodkärl på hud eller organ
SE9701303-1 1997-04-09

Publications (1)

Publication Number Publication Date
WO1998044841A1 true WO1998044841A1 (fr) 1998-10-15

Family

ID=20406498

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1998/000672 WO1998044841A1 (fr) 1997-04-09 1998-04-09 Dispositif de reperage visuel de vaisseaux sanguins

Country Status (3)

Country Link
AU (1) AU7092998A (fr)
SE (1) SE9701303L (fr)
WO (1) WO1998044841A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1013219A1 (fr) * 1998-12-24 2000-06-28 Matsushita Electric Industrial Co., Ltd. Dispositif et procédure de mesure de l'information du corps vivant et de la graisse corporelle et un support d'enregistrement de programme
WO2002030276A1 (fr) * 2000-10-07 2002-04-18 The Court Of Glasgow Caledonian University Dispositif et méthode de mesures de structures biologiques
US6377842B1 (en) 1998-09-22 2002-04-23 Aurora Optics, Inc. Method for quantitative measurement of fluorescent and phosphorescent drugs within tissue utilizing a fiber optic probe
CN113786168A (zh) * 2021-09-10 2021-12-14 复旦大学附属中山医院 一种术中可辨别脂肪组织中血管的光源系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817622A (en) * 1986-07-22 1989-04-04 Carl Pennypacker Infrared imager for viewing subcutaneous location of vascular structures and method of use
US5158090A (en) * 1989-11-16 1992-10-27 Chemnitz Technische Universitaet Method and arrangement for depicting structures
DE4130369A1 (de) * 1991-09-12 1993-03-25 Siemens Ag Vorrichtung zur medizinischen bildgebung mit licht
US5305759A (en) * 1990-09-26 1994-04-26 Olympus Optical Co., Ltd. Examined body interior information observing apparatus by using photo-pulses controlling gains for depths
WO1996039925A1 (fr) * 1995-06-07 1996-12-19 University Of Arkansas Procede et dispositif pour detecter une reflexion electromagnetique provenant de tissu biologique
US5610399A (en) * 1992-12-09 1997-03-11 Carl-Zeiss-Stiftung Apparatus and process for the spatially resolved optical determination of density distributions in biological tissues

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817622A (en) * 1986-07-22 1989-04-04 Carl Pennypacker Infrared imager for viewing subcutaneous location of vascular structures and method of use
US5158090A (en) * 1989-11-16 1992-10-27 Chemnitz Technische Universitaet Method and arrangement for depicting structures
US5305759A (en) * 1990-09-26 1994-04-26 Olympus Optical Co., Ltd. Examined body interior information observing apparatus by using photo-pulses controlling gains for depths
DE4130369A1 (de) * 1991-09-12 1993-03-25 Siemens Ag Vorrichtung zur medizinischen bildgebung mit licht
US5610399A (en) * 1992-12-09 1997-03-11 Carl-Zeiss-Stiftung Apparatus and process for the spatially resolved optical determination of density distributions in biological tissues
WO1996039925A1 (fr) * 1995-06-07 1996-12-19 University Of Arkansas Procede et dispositif pour detecter une reflexion electromagnetique provenant de tissu biologique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6377842B1 (en) 1998-09-22 2002-04-23 Aurora Optics, Inc. Method for quantitative measurement of fluorescent and phosphorescent drugs within tissue utilizing a fiber optic probe
EP1013219A1 (fr) * 1998-12-24 2000-06-28 Matsushita Electric Industrial Co., Ltd. Dispositif et procédure de mesure de l'information du corps vivant et de la graisse corporelle et un support d'enregistrement de programme
US6584340B1 (en) 1998-12-24 2003-06-24 Matsushita Electric Industrial Co., Ltd. Living body information measuring apparatus living body information measuring method body fat measuring apparatus body fat measuring method and program recording medium
US6985767B2 (en) 1998-12-24 2006-01-10 Matsushita Electric Industrial Co., Ltd. Living body information measuring apparatus, living body information measuring method, body fat measuring apparatus, body fat measuring method, and program recording medium
WO2002030276A1 (fr) * 2000-10-07 2002-04-18 The Court Of Glasgow Caledonian University Dispositif et méthode de mesures de structures biologiques
CN113786168A (zh) * 2021-09-10 2021-12-14 复旦大学附属中山医院 一种术中可辨别脂肪组织中血管的光源系统

Also Published As

Publication number Publication date
SE9701303L (sv) 1998-10-10
AU7092998A (en) 1998-10-30
SE9701303D0 (sv) 1997-04-09

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