EP2352455A1 - Procede et dispositif de marquage d'un milieu, et marqueur utilisable dans un tel procede - Google Patents
Procede et dispositif de marquage d'un milieu, et marqueur utilisable dans un tel procedeInfo
- Publication number
- EP2352455A1 EP2352455A1 EP09741386A EP09741386A EP2352455A1 EP 2352455 A1 EP2352455 A1 EP 2352455A1 EP 09741386 A EP09741386 A EP 09741386A EP 09741386 A EP09741386 A EP 09741386A EP 2352455 A1 EP2352455 A1 EP 2352455A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- marker
- interest
- medium
- activation
- ultrasonic
- 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.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K41/00—Medicinal preparations obtained by treating materials with wave energy or particle radiation ; Therapies using these preparations
- A61K41/0028—Disruption, e.g. by heat or ultrasounds, sonophysical or sonochemical activation, e.g. thermosensitive or heat-sensitive liposomes, disruption of calculi with a medicinal preparation and ultrasounds
-
- 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
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K49/00—Preparations for testing in vivo
- A61K49/001—Preparation for luminescence or biological staining
- A61K49/0013—Luminescence
- A61K49/0017—Fluorescence in vivo
- A61K49/0019—Fluorescence in vivo characterised by the fluorescent group, e.g. oligomeric, polymeric or dendritic molecules
- A61K49/0021—Fluorescence in vivo characterised by the fluorescent group, e.g. oligomeric, polymeric or dendritic molecules the fluorescent group being a small organic molecule
- A61K49/0041—Xanthene dyes, used in vivo, e.g. administered to a mice, e.g. rhodamines, rose Bengal
- A61K49/0043—Fluorescein, used in vivo
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K49/00—Preparations for testing in vivo
- A61K49/001—Preparation for luminescence or biological staining
- A61K49/0063—Preparation for luminescence or biological staining characterised by a special physical or galenical form, e.g. emulsions, microspheres
- A61K49/0069—Preparation for luminescence or biological staining characterised by a special physical or galenical form, e.g. emulsions, microspheres the agent being in a particular physical galenical form
- A61K49/0089—Particulate, powder, adsorbate, bead, sphere
- A61K49/0091—Microparticle, microcapsule, microbubble, microsphere, microbead, i.e. having a size or diameter higher or equal to 1 micrometer
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K49/00—Preparations for testing in vivo
- A61K49/22—Echographic preparations; Ultrasonic imaging preparations
- A61K49/222—Echographic preparations; Ultrasonic imaging preparations characterised by a special physical form, e.g. emulsions, liposomes
- A61K49/223—Microbubbles, hollow microspheres, free gas bubbles, gas microspheres
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K49/00—Preparations for testing in vivo
- A61K49/22—Echographic preparations; Ultrasonic imaging preparations
- A61K49/222—Echographic preparations; Ultrasonic imaging preparations characterised by a special physical form, e.g. emulsions, liposomes
- A61K49/225—Microparticles, microcapsules
-
- 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
- A61B90/36—Image-producing devices or illumination devices not otherwise provided for
- A61B90/37—Surgical systems with images on a monitor during operation
- A61B2090/378—Surgical systems with images on a monitor during operation using ultrasound
-
- 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
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
- A61B2090/3904—Markers, e.g. radio-opaque or breast lesions markers specially adapted for marking specified tissue
- A61B2090/3908—Soft tissue, e.g. breast tissue
-
- 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
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
- A61B2090/3937—Visible markers
- A61B2090/3945—Active visible markers, e.g. light emitting diodes
-
- 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
- A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
- A61B2090/3937—Visible markers
- A61B2090/395—Visible markers with marking agent for marking skin or other tissue
Definitions
- the present invention relates to methods and devices for marking a medium.
- a solid target medium eg, biological tissue
- these methods are used in particular in the medical field, to mark a lesion previously identified by medical imaging so that this area of interest can then be easily and precisely accessible during a surgical operation, for example for a biopsy or resection.
- These known methods consist in particular in implanting in said area of interest a registration member made for example of metal or other identifiable material (see for example the document US-B-6 758 855).
- Known methods of this type have the particular disadvantage of being invasive and not be usable in all cases, especially when it is necessary to mark a large number of areas of interest and / or areas of interest. interest of very small size or complex shape.
- these methods also have the disadvantage of then requiring resection of the tissue around the marking member, whereas such a resection may finally prove to be useless.
- the present invention is intended to overcome these disadvantages.
- the invention proposes a marking method for marking at least one zone of interest in a solid target medium, said method comprising at least the following steps: a marker addition step in which an optical tag initially inactivated and ultrasonically activatable is added to the medium, followed by an activation step in which an ultrasound beam is emitted. activation, focused on said area of interest and having a duration and power dimensioned to activate the marker, said marker being adapted to bind to the medium to color locally after activation.
- the optical marker can thus exclusively color the area or areas of interest in the medium, so that they are easily and accurately identifiable to the eye, in natural light or otherwise. For example, one can stain lesions in human or animal tissue after spotting these lesions by imaging. It is then possible for a surgeon to have precise access to these lesions, especially in view of a biopsy or a resection. This method makes it possible to easily and quickly mark areas of interest of all shapes, even if they are very numerous or if they are of small size or if they have complex shapes. This marking is non-invasive, and without prejudging the treatment subsequently applied to the marked areas.
- the optical marker in question may for example initially be inactivated by encapsulation in microcapsules, the microcapsules being broken during the emission of focused ultrasound.
- the marker in question may also be of thermosensitive type, initially intrinsically unfit to bind to the medium, then made able to bind to the medium during its interaction with ultrasound.
- the area of interest is previously identified by ultrasound imaging by an ultrasound system and during the activation step, the ultrasound beam focused by said ultrasound system is emitted; during the activation step, the ultrasonic activation beam is emitted for a duration of 1 to
- the optical marker added to the medium during the marker addition step comprises a dye encapsulated in microcapsules, the microcapsules being broken to release the dye during the ultrasonic activation step; the microcapsules are filled with gas or vaporizable liquid; during the activation step, the actual labeling of the zone of interest is followed by identifying breaks in microcapsules by ultrasound; the optical marker added to the medium during the marker addition step, contains a dye selected from vital dyes for use in clinical practice; said dye comprises fluorescein.
- the invention also relates to a marking device for implementing the above method, comprising an ultrasonic transducer array, and a control device adapted to emit an ultrasonic activation beam, focused in at least one zone of interest of a solid target medium, characterized in that the control device is adapted to emit the ultrasonic activation beam for a period of 1 to 1000 ⁇ s, said control device and the control network.
- transducers being designed so that said ultrasonic activation beam has a power such that it exerts in the medium a pressure of less than 8 MPa.
- the ultrasonic transducer array is adapted to transmit and receive ultrasonic waves
- the control device is adapted to perform an image of the target medium by ultrasound by means of said array of transducers, the marking device further comprising a user interface to show said image to an operator and to enable said operator to delimit the area of interest, the control device being adapted to emit said ultrasonic activation beam in the area of interest delimited with the user interface;
- the control device is further adapted to follow the effective marking of the area of interest by locating in the medium, by ultrasound, breaks of marker microcapsules filled with gas or vaporizable liquid.
- the subject of the invention is also an optical marker that can be used in a method as defined above, said marker being inactivated and ultrasonically activatable, said marker being adapted to bind to a target medium to color it locally after activation by ultrasound.
- the optical marker comprises microcapsules retaining a dye, the microcapsules being adapted to be broken by ultrasound; the microcapsules contain gas or vaporizable liquid; the optical marker contains a dye selected from vital dyes for use in clinical practice; said dye comprises fluorescein.
- FIG. 1 is a block diagram showing a marking device according to one embodiment of the invention, in use;
- FIG. 2 is a block diagram of the marking device of FIG. 1, and
- FIG. 3 is an enlarged view of the screen of the marking device of FIG.
- the marking device 1 shown in FIG. 1 is an ultrasound system comprising: a network 2 of ultrasound transducers, for example a linear array of the type commonly used in ultrasound, comprising a number n of ultrasonic transducers 2a (for example, order of 100 to 300 transducers), an electronic rack 3 controlling the network 2 of transmitting transducers and able to acquire signals picked up by this network,
- a network 2 of ultrasound transducers for example a linear array of the type commonly used in ultrasound, comprising a number n of ultrasonic transducers 2a (for example, order of 100 to 300 transducers)
- an electronic rack 3 controlling the network 2 of transmitting transducers and able to acquire signals picked up by this network
- a microcomputer 4 for controlling the electronic rack 3 comprising a user interface that includes a screen 5 on which ultrasound images taken can be viewed; by means of the network 2 of transducers, and said user interface also comprising for example a keyboard 6 associated with a mouse or the like (not shown) and if necessary a pointing device 7 such as an optical pen or the like, which allows by for example an operator 8 delimit an area on the screen 5, as will be explained later.
- the transducer array 2 is adapted to be contacted with a solid target medium 9, for example a portion of a human or animal body, so as to locate and mark one or more areas of interest in that medium, such as it will be explained later.
- the zone of interest 10 may be, for example, a lesion, in particular a tumor.
- the electronic rack 3 and the microcomputer 4 together form a control device adapted to control the network 2 of transducers and acquire and process signals from this network.
- a control device adapted to control the network 2 of transducers and acquire and process signals from this network.
- the electronic rack 3 may comprise, for example: n analog / digital converters 11 (AZO 1 -A / O n ) individually connected (for example by a cable) to the n transducers (T 1 -T n ) the network 2 of transducers; n buffers 12 (Bi-B n ) respectively connected to the analog / digital converters 11, an electronic central unit 13 (CPU) communicating with the buffer memories 12 and the microcomputer 4, a central memory 14 (MEM) connected to the CPU 13,
- the marking device 1 which has just been described can be used by successively following steps of adding marker, locating the area of interest and marking the area of interest.
- an initially inactivated and ultrasonically activatable optical marker is added to the medium.
- This marker addition is carried out for example by injection, the marker then diffusing into the medium 9.
- the optical marker in question may for example comprise a dye encapsulated in microcapsules.
- This dye may be, for example, fluorescein or any other dye chosen from the vital dyes that can be used in clinical practice.
- microcapsules are in fact microbubbles which may, for example, have a diameter of the order of 1 to 10 ⁇ m and be filled with gas (in particular air or perfluorocarbon) or vaporizable liquid during the bursting of the microbubble; they may be provided with a thin external wall based on lipid, protein or polymer, adapted to break when it receives a sufficiently powerful ultrasonic beam.
- gas in particular air or perfluorocarbon
- vaporizable liquid during the bursting of the microbubble
- they may be provided with a thin external wall based on lipid, protein or polymer, adapted to break when it receives a sufficiently powerful ultrasonic beam.
- Microcapsules that can be used in the context of the present invention, and their method of production, are described in the state of the art, in particular by Dayton et al. [Molecular imaging using microbubble ultrasound contrast agent - Frontiers in Bioscience 12, 5124-5142, September 1, 2007], Hettiarachchi et al. [On-chip generation of microbubbles as a practical technology for manufacturing agents for ultrasonic imaging - Lab Chip 2007, 7, 463-468 - The Royal Society of Chemistry 2007], TaIu et al. [Maintaining monodispersity in a microbubble population formed by flow focussing-Langmuir 2008 - American Chemical Society] and in US-B-6 416 740. 2.
- Tracing step The device 1 is then conventionally used in ultrasound imaging mode, to display an image 10a of the area of interest 10 on the screen 5, as shown in FIG. 3.
- the operator 8 can delimit the area of interest 10 by drawing the limit 10b of the image 10a of this area on the screen 5, for example by the aforementioned optical pen 7 or any other user interface serving as a pointing device.
- this tracking work can be performed successively in several parallel planes, so as to delimit the area of interest in three dimensions.
- Activation step of the marker When the area of interest 10 has been delimited by the operator, it triggers the step of activating the optical marker. During this step, the central unit 13 sends successively ultrasonic activation beams, focused at different points of said area of interest 10, so that the entire area of interest 10 receives ultrasounds to activate the optical marker by bursting the microcapsules that initially retain the dye.
- Each ultrasonic activation beam has a duration and power sized to activate the marker without damaging the medium.
- each activation ultrasonic beam has a duration of 1 to 1000 ⁇ s, in particular of 10 to 1000 ⁇ s (microseconds) and said ultrasonic activation beam has a power such that it exerts in the medium 9 a pressure lower than 8 MPa, especially less than 6 MPa (mega Pascals), which corresponds to conventional imaging powers.
- the dye initially retained by the microcapsules is then violently released and is housed locally in the cell walls of the tissue forming the medium 9, so that it remains bound to the medium for the stain locally after activation.
- This coloration may last from a few hours to a few days, depending on the nature and quantity of the dye used.
- the marker In the rest of the medium, the marker is not activated and is then eliminated naturally by the body, under the effect of blood circulation.
- the optical marker can thus exclusively stain the zone (s) of interest in the medium (9), so that they can then be easily and accurately identified with the eye, in natural light or otherwise, during a surgical procedure in order to in particular a biopsy or a resection of the area of interest 10.
- This method makes it possible to easily and quickly mark areas of interest of all shapes, even if they are very numerous or if they are of small size or if they have complex shapes. This marking is non-invasive, and without prejudging the treatment subsequently applied to the marked areas.
- the operator 8 can follow the actual marking of the zone of interest by identifying the microcapsule breaks by the sounds they emit by bursting, sounds that are picked up by the transducer array 2 and typically located by channel formation by the central unit 13, then for example presented on the screen in the form of dots or other symbols
- the process may comprise an activation step for each of these planes, the location in the following plane n ' only when the activation of the optical marker is complete in the current plane.
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Radiology & Medical Imaging (AREA)
- Acoustics & Sound (AREA)
- Physics & Mathematics (AREA)
- Surgery (AREA)
- Pathology (AREA)
- Pharmacology & Pharmacy (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Medicinal Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Surgical Instruments (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0856001A FR2935604B1 (fr) | 2008-09-08 | 2008-09-08 | Procede et dispositif de marquage d'un milieu, et marqueur utilisable dans un tel procede |
| PCT/FR2009/051692 WO2010026357A1 (fr) | 2008-09-08 | 2009-09-08 | Procede et dispositif de marquage d'un milieu, et marqueur utilisable dans un tel procede. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2352455A1 true EP2352455A1 (fr) | 2011-08-10 |
Family
ID=40512551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09741386A Withdrawn EP2352455A1 (fr) | 2008-09-08 | 2009-09-08 | Procede et dispositif de marquage d'un milieu, et marqueur utilisable dans un tel procede |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20110190627A1 (fr) |
| EP (1) | EP2352455A1 (fr) |
| JP (1) | JP2012501707A (fr) |
| CN (1) | CN102170836A (fr) |
| BR (1) | BRPI0918067A2 (fr) |
| CA (1) | CA2735966A1 (fr) |
| FR (1) | FR2935604B1 (fr) |
| WO (1) | WO2010026357A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8579922B2 (en) | 2009-10-05 | 2013-11-12 | Covidien Lp | Method of suture identification and mesh marking for orienting and locating a mesh during hernia repair |
| US20120289811A1 (en) * | 2011-05-13 | 2012-11-15 | Tyco Healthcare Group Lp | Mask on monitor hernia locator |
| US20130041266A1 (en) * | 2011-08-12 | 2013-02-14 | Tyco Healthcare Group Lp, | System and Method for Indicating Positioning of an Internal Anatomical Feature |
| US8971989B2 (en) | 2012-01-24 | 2015-03-03 | Covidien Lp | Magnetic field device for mapping and navigation in laparoscopic surgery |
| FR3000688B1 (fr) | 2013-01-08 | 2016-09-30 | Centre Nat De La Rech Scient - Cnrs - | Procede pour activer une reaction chimique, melange activable par ce procede et dispostiif pour la mise en oeuvre de ce procede |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6416740B1 (en) | 1997-05-13 | 2002-07-09 | Bristol-Myers Squibb Medical Imaging, Inc. | Acoustically active drug delivery systems |
| AU2001217746A1 (en) * | 1998-05-14 | 2002-05-27 | Calypso Medical, Inc. | Systems and methods for locating and defining a target location within a human body |
| US6179860B1 (en) | 1998-08-19 | 2001-01-30 | Artemis Medical, Inc. | Target tissue localization device and method |
| US6740039B1 (en) * | 1999-08-20 | 2004-05-25 | Koninklijke Philips Electronics N.V. | Methods and apparatus for displaying information relating to delivery and activation of a therapeutic agent using ultrasound energy |
| WO2002000298A1 (fr) * | 2000-06-28 | 2002-01-03 | Insightec - Image Guided Treatment, Ltd. | Utilisation de liposomes thermosensibles |
| US6475148B1 (en) * | 2000-10-25 | 2002-11-05 | Acuson Corporation | Medical diagnostic ultrasound-aided drug delivery system and method |
| US7160258B2 (en) * | 2001-06-26 | 2007-01-09 | Entrack, Inc. | Capsule and method for treating or diagnosing the intestinal tract |
| US7358226B2 (en) * | 2003-08-27 | 2008-04-15 | The Regents Of The University Of California | Ultrasonic concentration of drug delivery capsules |
| JP4521204B2 (ja) * | 2004-02-27 | 2010-08-11 | 株式会社東芝 | 超音波診断装置、画像処理装置及び超音波画像撮影方法 |
| US20050255044A1 (en) * | 2004-05-14 | 2005-11-17 | Lomnes Stephen J | Contrast agent for combined modality imaging and methods and systems thereof |
| WO2007010442A2 (fr) * | 2005-07-22 | 2007-01-25 | Koninklijke Philips Electronics, N.V. | Procede et systeme de diffusion de medicament in vivo |
| US20070025917A1 (en) * | 2005-07-26 | 2007-02-01 | General Electric Company | Optical imaging based on locally activated bioluminescence |
| EP1930045A1 (fr) * | 2006-12-08 | 2008-06-11 | BIOTRONIK CRM Patent AG | Système médical implantable avec un capteur acoustique pour la mesure du débit sanguin mitral |
-
2008
- 2008-09-08 FR FR0856001A patent/FR2935604B1/fr not_active Expired - Fee Related
-
2009
- 2009-09-08 EP EP09741386A patent/EP2352455A1/fr not_active Withdrawn
- 2009-09-08 BR BRPI0918067A patent/BRPI0918067A2/pt not_active IP Right Cessation
- 2009-09-08 CN CN2009801395903A patent/CN102170836A/zh active Pending
- 2009-09-08 WO PCT/FR2009/051692 patent/WO2010026357A1/fr not_active Ceased
- 2009-09-08 US US13/062,290 patent/US20110190627A1/en not_active Abandoned
- 2009-09-08 JP JP2011525605A patent/JP2012501707A/ja active Pending
- 2009-09-08 CA CA2735966A patent/CA2735966A1/fr not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010026357A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110190627A1 (en) | 2011-08-04 |
| FR2935604A1 (fr) | 2010-03-12 |
| FR2935604B1 (fr) | 2012-01-06 |
| CN102170836A (zh) | 2011-08-31 |
| JP2012501707A (ja) | 2012-01-26 |
| CA2735966A1 (fr) | 2010-03-11 |
| WO2010026357A1 (fr) | 2010-03-11 |
| BRPI0918067A2 (pt) | 2015-12-01 |
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