WO2021097547A1 - Appareil de visualisation de veines superficielles au moyen d'un procédé d'analyse et de traitement d'images par calcul embarqué et accessoire de renfort - Google Patents

Appareil de visualisation de veines superficielles au moyen d'un procédé d'analyse et de traitement d'images par calcul embarqué et accessoire de renfort Download PDF

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Publication number
WO2021097547A1
WO2021097547A1 PCT/BR2020/050497 BR2020050497W WO2021097547A1 WO 2021097547 A1 WO2021097547 A1 WO 2021097547A1 BR 2020050497 W BR2020050497 W BR 2020050497W WO 2021097547 A1 WO2021097547 A1 WO 2021097547A1
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WO
WIPO (PCT)
Prior art keywords
image
processing
veins
accessory
board
Prior art date
Application number
PCT/BR2020/050497
Other languages
English (en)
Portuguese (pt)
Inventor
Jose Humberto YATSUDA MOROMIZATO
Vanderlei SALVADOR BAGNATO
Original Assignee
Yatsuda Moromizato Jose Humberto
Salvador Bagnato Vanderlei
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
Priority claimed from BR102019024668-5A external-priority patent/BR102019024668A2/pt
Priority claimed from BR102020023676-8A external-priority patent/BR102020023676A2/pt
Application filed by Yatsuda Moromizato Jose Humberto, Salvador Bagnato Vanderlei filed Critical Yatsuda Moromizato Jose Humberto
Publication of WO2021097547A1 publication Critical patent/WO2021097547A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/42—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for desensitising skin, for protruding skin to facilitate piercing, or for locating point where body is to be pierced

Definitions

  • the present invention patent deals with the visualization device of superficial veins through the method of analysis and image processing through embedded computing, notably, said visualization device presents innovative characteristics through the illumination of the superficial tissue and reflection absorbed by a sensor that feeds the entrance of a system responsible for distinguishing veins, both from animals and humans, from other tissues and presents in full scale the image of the puncture site with a clear and precise definition of where the veins of the puncture are located. ensuring greater assertiveness of the puncture, as well as greater comfort for the patient.
  • This visualization device acts together with a reinforcing accessory equipped with 808 Nm infrared lasers, sinks and respective electronic devices that improve the image quality and contribute to the performance of the visualization device.
  • subcutaneous vein images are of great interest in a wide range of medical applications that can range from facilitating access to vein puncture to vascular surgery.
  • medical images in infrared IR have contributed to the visualization of subcutaneous structures (LIMA; BAKKER, 2011).
  • the band of the electromagnetic spectrum located in the infrared can offer a good solution for the visualization of veins, since it interacts with human tissue more deeply than the visible light.
  • blood absorbs IR energy to a greater degree than the surrounding tissue, through the absorption of hemoglobin (ZHAROV, 2004).
  • One of the existing devices allows the location of the vein through the juxtaposition of the over the vein, which points with a red light to the direction of its continuity, however it predicts flaws in bifurcations and the processing is hampered by the effect of the hair on the patient.
  • Some vein visualization devices have a light-emitting diode type of light source - LED - which, although efficient, may have limitations that make it difficult to distinguish deeper veins. To this end, some visualization devices work in conjunction with reinforcing accessories, whose lighting source is based on infrared lasers that intensify the distinction of the veins. ANALYSIS OF THE STATE OF THE TECHNIQUE
  • a vein visualization system for mobile devices defined by a sampling device specifically developed to obtain images of veins from their interaction with short infrared wavelengths.
  • a sampling device is characterized by being integrated with conventional mobile devices, through connection via cable and an auxiliary application that processes and displays images of subcutaneous veins on the smartphone or tablet screen, in real time.
  • the lighting system of the sampling device provides two wavelengths, 760nm and 850nm, alternately activated by a selector switch and attenuated by a potentiometer. Fixing the sampling device to the body of the conventional mobile device is performed through an adjustable base, which can be tilted to provide sampling perpendicular to the mobile device's screen, in addition to being connected to a flexible rod to support the complete system, freeing hands of user.
  • the document no. US2018015235 is a portable vein visualization device that can be battery powered and portable to reveal the patient's vasculature information to assist in venipuncture processes.
  • the device comprises a first laser diode emitting infrared light and a second laser diode emitting only visible wavelengths, in which the vasculature absorbs a portion of the infrared light causing reflection of a contrasted infrared image.
  • a pair of silicon PIN photodiodes responsive to the contrasted infrared image, causes the transmission of a corresponding signal.
  • the signal is processed through circuits to amplify, add and filter the emitted signals and, with the use of an image processing algorithm, the contrasted image is projected onto the surface of the patient's skin using the second laser diode.
  • the revealed information may include location, depth, diameter and degree of certainty of the locations of the veins.
  • the projection of vein images can be a positive or negative image. Venipuncture needles can be coated to provide visibility in projected images.
  • the document no. KR20150110362 deals with vein viewer using the infrared ray, comprising: a camera unit; an integrated IR-LED module with an IR-LED that generates near infrared light radiated on the skin, an energy unit that provides energy and an IR filter that allows an near infrared light to pass through and polarize; an IR-LED module controller to control each function of the IR-LED module; a display unit for displaying the blood vessels of a photographed body part; and a control unit to control the camera unit, the IR-LED module, the IR-LED module controller and the display unit to operate together.
  • JP2013240690 presents a micro vein image enhancer to visualize an image in the target region of a patient's blood vessel, that is, it is a compact laser enhancing the contrast of the vein image.
  • Said laser is comprised of a portable product and that includes a mast whose end is suitable to be fixed to the container of a vial.
  • the body part has a miniature projection head that comprises a first laser to generate images of a target region and a second laser to project an image along an optical path to the target region.
  • Said lasers are composed of a semiconductor red laser of 630 Nm, which is designed in the combiner and the semiconductor laser with a frequency of 700 Nm to 1000 Nm, with a preferred frequency of 740 Nm, is also designed in the combiner.
  • the objective of the present invention is to present a visualization device for superficial veins by means of a method of analysis and image processing through embedded computing and a reinforcing accessory, the said device providing for: i) ideal wavelength of illumination of the tissue of the patient; ii) sensors for capturing the image of the veins; iii) hardware for image processing of the veins and presentation to the puncture applicator; iv) embedded software system.
  • the objective of the present invention is to present a visualization apparatus for superficial veins by means of the analysis and image processing method through embedded computing that acts in conjunction with a reinforcing accessory provided with means of emission of infrared lasers of 808 Nm that intensifies the exposure of the veins captured by the visualization device.
  • the objective of this invention is to present a visualization device for superficial veins through analysis and image processing that through the illumination of the superficial tissue and reflection absorbed by a sensor that feeds the entrance of the system responsible for distinguishing the veins from the other tissues, it presents in real scale the image of the location of the puncture application with a clear and precise definition, thus guaranteeing greater assertiveness of the puncture, as well as greater comfort for the patient during the procedure.
  • Another objective of this invention is to present a visualization device for superficial veins through analysis and image processing through embedded computing whose system is located at a distance from the surface, avoiding focusing or optical adjustment steps that demand time and preparation operator.
  • Another objective is to present a device for visualizing superficial veins by means of image analysis and processing, whose developed system has embedded software, which allows for proper exploration of image processing, removing unnecessary emitters, concentrating on the veins.
  • Another objective is to present a visualization device for superficial veins that uses rechargeable batteries, being that when there is no need to use it it is manually connected to an electrical outlet for charging the batteries.
  • Another objective of the present invention is to present a vein visualization device that works together with the reinforcing accessory provided with electronic devices that control the 808 Nm infrared lasers and dissipators, so that, when positioned close to the patient's skin, they are capable of to intensify the exposure of the deep veins projected on the visualization device
  • Another objective of the present invention is to present a device for visualizing superficial veins and reinforcing accessory that can be applied on the skin of humans and animals to distinguish deeper veins.
  • figure 1 represents a frontal view of the apparatus for visualizing superficial veins
  • figure 2 shows a rear view
  • figure 3 shows a block diagram of the operating system that makes up the device in question
  • figure 4 reveals a block diagram of the steps that make up the method of analysis and image processing
  • figure 6A shows a flow chart illustrating the components of the reinforcing accessory that works together with the vein visualization device
  • figure 6B shows an assembled perspective view of a constructive version of the reinforcing accessory
  • figures 7A and 7B show a cross-section AA indicated in figure 6B illustrating the rotation adjustment of the structural supports of the set of lasers and respective heatsinks;
  • figures 8A and 8B illustrate top views of the reinforcing accessory indicating minimum and maximum adjustable interstice for positioning the patient limb;
  • figures 9 and 9 A illustrate how to use the reinforcing accessory, revealing the set of lasers arranged close to the patient's skin and the device illustrating the image captured and processed by the embedded system.
  • the present invention patent refers to "SURFACE VEHICLE VIEWER APPLIANCE THROUGH THE METHOD OF ANALYSIS AND IMAGE PROCESSING THROUGH COMPUTED BOARD AND ENHANCED ACCESSORY", more precisely it is a visualization device. (10) of animal and human veins for the practice of venipuncture and its reinforcing accessory (90).
  • the apparatus (10) visualizes superficial veins through the method of analysis and image processing (11) by means of embedded computing and according to the parameters: i) ideal wavelength of illumination of the tissue of the patient; ii) sensors (20) for capturing the image of the veins; iii) hardware (30) for image processing of the veins and presentation to the puncture applicator; iv) operating software systems (40) embedded for image processing, and said device (10) can act together with a reinforcing accessory (90) provided with a set of lasers (92a) of 808 Nm and respective sinks (92b) in the which are coordinated by electronic devices (91) that intensify the exposure of the patient's veins and contribute to the performance of the visualization device (10)
  • Said device (10) provides (11A) capacitive touch, on / off switch (12) and button (13) to turn off the operating system (40), microprocessor board (31), infrared camera (50) connected the microprocessor plate (31) is responsible for acquiring the images of the irradiated tissue, plate (60) of infrared light emitting diodes with wavelength from 750 nm to 950 nm and radiometric power of 500 mW, attending to different skin tones and willing angled (a), preferably 45 degrees from the camera lens inlet (50), optical filters (70), batteries (80).
  • the operating system (40) includes a power switching circuit (Cl), a load protection circuit (C2), a voltage adaptation circuit (C3), a battery charging circuit (C4) and a power supply. source.
  • Said batteries (80) are connected in a charger module (81) formed by a board with an integrated circuit that connects to the external source through a mini USB connector, allowing the batteries to be recharged without the need to remove them from the device ( 10).
  • Said optical filters (70) used for infrared consists of a RG 715 glass with a thickness of 4mm and 10mm in diameter, designed to block all the light in the spectrum below 715nm, thus allowing only the infrared light to pass through the camera.
  • the LED light output is provided with a diffuser (70a) made of glass with a sandblasted surface and another smooth surface to spread the light more evenly over the patient's skin.
  • Said device (10) provides a voltage-boosting DC-DC voltage converter to adapt the input voltages (3.7 V batteries or 5 V source) to the microprocessor board power input (31) and the plate (60) of the infrared light emitting diodes, as well as a power switch module that consists of a static switch in which its input receives power from both the external source and the charger and its output takes this power to the converter of tension.
  • a power switch module that consists of a static switch in which its input receives power from both the external source and the charger and its output takes this power to the converter of tension.
  • Said device (10) provides a load protection circuit that consists of a voltage comparator circuit by an operational amplifier that monitors the voltage level of the batteries, if they are below an acceptable limit (3.3V) sends a TTL signal.
  • the processor board (GPIO 16) that allows the operating system to shut down the system as a safety method against low load.
  • Said reinforcement accessory (90) acts together with the visualization device (10) to enhance the quality of the image captured by the device (10) and provides for electronic devices (91) that coordinate the lasers (92a) and heatsinks (92b) composed by: i) source of direct voltage (91a); ii) P4 plug for panel (91b); iii) on / off switch (91c); iv) battery charger module (91d) interconnected with batteries (91d '); v) current and constant voltage driver modules (91e) each feeding the lasers (92a); and vi) battery voltage monitoring circuit (91f), with visual signal indicating the charging status.
  • electronic devices (91) that coordinate the lasers (92a) and heatsinks (92b) composed by: i) source of direct voltage (91a); ii) P4 plug for panel (91b); iii) on / off switch (91c); iv) battery charger module (91d) interconnected with batteries (91d '); v) current and constant voltage driver modules (91
  • Said reinforcement accessory (90) provides a structural support (92) of a structure (90A) that receives lasers (92a) and heatsinks (92b) installed in parallel in a fixed part (93a) and moving part (93b).
  • Said structural support (92) provides for rotation (AJ) and interstitial (IA) adjustment according to the minimum (al) and maximum (a2) spacing for the disposition of the patient's limb (PC).
  • the software (40) provides an algorithm that uses mathematical methods used in computer vision through the OpenCV library to process the images captured by the camera (50) from frame to frame. apparatus (10) together with the intensification of luminescence made possible by the accessory (90), presenting the following steps: a) The images are imported for application in the libraries necessary for the development of the program; b) Then the object for the camera (50) is created and the resolution is set, then the program enters an infinite loop to process frame by frame at a rate of 60fps (frames per second) image by image acquired by the camera (50) ; c) After the program separates the R, G and B channels of the image into specific images for each channel, it converts to shades of gray.
  • Said image converted to gray levels is the input image for the main processing operation, which is the adaptive histogram equalization; and d)
  • the processed image is converted back to a color image and added weight to the frame originally captured, thus being presented on the display to the user of the device (10).

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Hematology (AREA)
  • Dermatology (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

L'invention concerne un appareil de visualisation (10) et veines pour la pratique d'une ponction veineuse. Ledit appareil (10) permet de visualiser des veines superficielles au moyen d'un procédé d'analyse et de traitement d'images (11) par calcul embarqué et selon les paramètres suivants : (i) longueur d'onde idéale d'éclairage du tissu du patient ; (ii) capteurs (20) pour capter l'image des veines ; (iii) matériel (30) pour traitement d'image des veines et présentation pour l'applicateur de ponction ; (iv) systèmes d'exploitation de logiciel (40) embarqué pour le traitement des images ; ledit appareil (10) agissant conjointement avec un accessoire de renfort (90) pourvu d'un ensemble de lasers (92a) de 808 Nm et de dissipateurs (92b) respectifs dont la coordination est assurée par des dispositifs électroniques (91).
PCT/BR2020/050497 2019-11-22 2020-11-23 Appareil de visualisation de veines superficielles au moyen d'un procédé d'analyse et de traitement d'images par calcul embarqué et accessoire de renfort WO2021097547A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BR102019024668-5A BR102019024668A2 (pt) 2019-11-22 2019-11-22 aparelho visualizador de veias superficiais por meio de método de análise e processamento de imagens através de computação embarcada
BRBR1020190246685 2019-11-22
BR102020023676-8A BR102020023676A2 (pt) 2020-11-19 2020-11-19 Acessório reforçador para aparelho visualizador de veias
BRBR1020200236768 2020-11-19

Publications (1)

Publication Number Publication Date
WO2021097547A1 true WO2021097547A1 (fr) 2021-05-27

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140194751A1 (en) * 2006-06-29 2014-07-10 Ron Goldman Scanned Laser Vein Contrast Enhancer Using One Laser for a Detection Mode and a Display Mode
US20180015235A1 (en) * 2009-07-22 2018-01-18 Accuvein, Inc. Vein Scanner with User Interface
US20190117888A1 (en) * 2014-01-29 2019-04-25 Becton, Dickinson And Company System and Method for Assuring Patient Medication and Fluid Delivery at the Clinical Point of Use

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140194751A1 (en) * 2006-06-29 2014-07-10 Ron Goldman Scanned Laser Vein Contrast Enhancer Using One Laser for a Detection Mode and a Display Mode
US20180015235A1 (en) * 2009-07-22 2018-01-18 Accuvein, Inc. Vein Scanner with User Interface
US20190117888A1 (en) * 2014-01-29 2019-04-25 Becton, Dickinson And Company System and Method for Assuring Patient Medication and Fluid Delivery at the Clinical Point of Use

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