EP2908714A1 - Endoscope à caméras multiples - Google Patents

Endoscope à caméras multiples

Info

Publication number
EP2908714A1
EP2908714A1 EP13847670.0A EP13847670A EP2908714A1 EP 2908714 A1 EP2908714 A1 EP 2908714A1 EP 13847670 A EP13847670 A EP 13847670A EP 2908714 A1 EP2908714 A1 EP 2908714A1
Authority
EP
European Patent Office
Prior art keywords
tip section
pointing
endoscope
discrete
camera
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Withdrawn
Application number
EP13847670.0A
Other languages
German (de)
English (en)
Other versions
EP2908714A4 (fr
Inventor
Avi Levy
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.)
EndoChoice Innovation Center Ltd
Original Assignee
EndoChoice Innovation Center Ltd
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 US13/655,120 external-priority patent/US9872609B2/en
Application filed by EndoChoice Innovation Center Ltd filed Critical EndoChoice Innovation Center Ltd
Publication of EP2908714A1 publication Critical patent/EP2908714A1/fr
Publication of EP2908714A4 publication Critical patent/EP2908714A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00091—Nozzles
    • 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
    • A61B1/00163—Optical arrangements
    • A61B1/00174—Optical arrangements characterised by the viewing angles
    • A61B1/00177—Optical arrangements characterised by the viewing angles for 90 degrees side-viewing
    • 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
    • A61B1/00163—Optical arrangements
    • A61B1/00174—Optical arrangements characterised by the viewing angles
    • A61B1/00181—Optical arrangements characterised by the viewing angles for multiple fixed viewing angles
    • 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
    • A61B1/012—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 characterised by internal passages or accessories therefor
    • A61B1/015—Control of fluid supply or evacuation
    • 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
    • A61B1/04—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 combined with photographic or television appliances
    • A61B1/05—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 combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
    • 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
    • A61B1/06—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 with illuminating arrangements
    • A61B1/0615—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 with illuminating arrangements for radial illumination
    • 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
    • A61B1/06—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 with illuminating arrangements
    • A61B1/0625—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 with illuminating arrangements for multiple fixed illumination angles
    • 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
    • A61B1/12—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 with cooling or rinsing arrangements
    • A61B1/126—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 with cooling or rinsing arrangements provided with means for cleaning in-use
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2407—Optical details
    • G02B23/2423—Optical details of the distal end

Definitions

  • Embodiments of the disclosure relate to a multi-camera endoscope.
  • Endoscopes have attained great acceptance within the medical community, since they provide a means for performing procedures with minimal patient trauma, while enabling the physician to view the internal anatomy of the patient.
  • numerous endoscopes have been developed and categorized according to specific applications, such as cystoscopy, colonoscopy, laparoscope upper GI endoscopy and others. Endoscopes may be inserted into the body's natural orifices or through an incision in the skin.
  • An endoscope is usually an elongated tubular shaft, rigid or flexible, having a video camera or a fiber optic lens assembly at its distal end.
  • the shaft is connected to a handle, which sometimes includes an ocular for direct viewing. Viewing is also usually possible via an external screen.
  • Various surgical tools may be inserted through a working channel in the endoscope for performing different surgical procedures.
  • a tip section of a multi-camera endoscope comprising a front-pointing camera and a discrete front illuminator associated therewith, two or more side-pointing cameras positioned at or in proximity to a distal end of the tip section, wherein each of the two or more side-pointing cameras having a discrete side illuminator associated therewith; and a working channel configured for insertion of a surgical tool.
  • a multi-camera endoscope comprising an elongated shaft terminating with a tip section turnable by way of a bending section, wherein the tip section comprises a front-pointing camera and a discrete front illuminator associated therewith, two or more side-pointing cameras positioned at or in proximity to a distal end of the tip section, wherein each of the two or more side-pointing cameras having a discrete side illuminator associated therewith, and a working channel configured for insertion of a surgical tool.
  • the tip section may further include a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted.
  • the tip section may further include a fluid injector configured for cleaning the front- pointing camera and/or the discrete front illuminator.
  • the tip section may further include two or more side fluid injectors configured for cleaning the two or more side -pointing cameras and/or the discrete side illuminators.
  • the tip section may include two side -pointing cameras.
  • the tip section may further include two side-pointing cameras pointing at directions essentially opposing to one another.
  • the tip section may further include three or more (for example, three, four, five, six or more) side-pointing cameras positioned essentially at equal distances from each other along the perimeter of the tip section.
  • the discrete front illuminator may include a light- emitting diode (LED).
  • each of the discrete side illuminators may include a light-emitting diode (LED).
  • each of the discrete front and side illuminators may include a light-emitting diode (LED).
  • a tip section of a multi-camera endoscope comprising: two or more side -pointing cameras positioned at or in proximity to a distal end of the tip section, wherein the field of view provided by the two or more side-pointing cameras covers a front and side views; one or more discrete illuminator; a working channel configured for insertion of a surgical tool; and a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted.
  • a tip section of a multi-camera endoscope comprising: three side-pointing cameras positioned at or in proximity to a distal end of the tip section, wherein the field of view provided by the three side-pointing cameras covers a front and side views; one or more discrete illuminator; a working channel configured for insertion of a surgical tool; and a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted.
  • a tip section of a multi-camera endoscope comprising: three side-pointing cameras positioned at or in proximity to a distal end of the tip section, wherein the field of view provided by the three side-pointing cameras covers a front and side views; three discrete illuminators (such as LEDs), each associated with each one of the three side -pointing cameras; and a working channel configured for insertion of a surgical tool.
  • a tip section of a multi-camera endoscope comprising: three side-pointing cameras positioned at or in proximity to a distal end of the tip section, wherein the field of view provided by the three side-pointing cameras covers a front and side views; one front discrete illuminator (such as a LED), and a working channel configured for insertion of a surgical tool.
  • the tip section may further include a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted.
  • a multi-camera endoscope comprising: an elongated shaft terminating with a tip section turnable by way of a bending section, wherein the tip section comprises: two or more side -pointing cameras positioned at or in proximity to a distal end of the tip section, wherein the field of view provided by the two or more side-pointing cameras covers a front and side views; one or more discrete illuminator; a working channel configured for insertion of a surgical tool; and a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted.
  • a multi-camera endoscope comprising: an elongated shaft terminating with a tip section turnable by way of a bending section, wherein the tip section comprises: three side-pointing cameras positioned at or in proximity to a distal end of the tip section, wherein the field of view provided by the three side-pointing cameras covers a front and side views; three discrete illuminators (such as LEDs), each associated with each one of the three side -pointing cameras, and a working channel configured for insertion of a surgical tool.
  • a multi-camera endoscope comprising: an elongated shaft terminating with a tip section turnable by way of a bending section, wherein the tip section comprises: three side-pointing cameras positioned at or in proximity to a distal end of the tip section, wherein the field of view provided by the three side-pointing cameras covers a front and side views; one front discrete illuminator (such as a LED), and a working channel configured for insertion of a surgical tool.
  • the multi-camera endoscope may further include a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted.
  • a tip section of a multi-camera endoscope comprising: two or more side -pointing cameras positioned at or in proximity to a distal end of the tip section, wherein each of the two or more side-pointing cameras having a discrete illuminator associated therewith, wherein the field of view provided by the two or more side-pointing cameras covers a front and side views; a working channel configured for insertion of a surgical tool; and a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted.
  • a multi-camera endoscope comprising: an elongated shaft terminating with a tip section turnable by way of a bending section, wherein the tip section comprises: two or more side -pointing cameras positioned at or in proximity to a distal end of the tip section, wherein each of the two or more side- pointing cameras having a discrete illuminator associated therewith, wherein the field of view provided by the two or more side-pointing cameras covers a front and side views; a working channel configured for insertion of a surgical tool; and a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted.
  • the tip section may further include two or more side fluid injectors configured for cleaning the two or more side-pointing cameras and/or the discrete side illuminators.
  • the two or more side-pointing cameras may point at directions essentially opposing to one another.
  • the tip section may include three or more side -pointing cameras. According to some embodiments, the three or more side -pointing cameras may be positioned essentially at equal distances from each other along the perimeter of the tip section.
  • a tip section of a multi-camera endoscope comprising: a front-pointing camera and a discrete front illuminator associated therewith; a front fluid injector configured for cleaning at least one of the front-pointing camera and the discrete front illuminator; a side-pointing camera; a working channel configured for insertion of a surgical tool; and a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted.
  • a multi-camera endoscope comprising: an elongated shaft terminating with a tip section turnable by way of a bending section, wherein the tip section comprises: two or more side -pointing cameras positioned at or in proximity to a distal end of the tip section, wherein each of the two or more side- pointing cameras having a discrete illuminator associated therewith, wherein the field of view provided by the two or more side-pointing cameras covers a front and side views; a working channel configured for insertion of a surgical tool; and a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted.
  • the tip section may further include a discrete side illuminator associated with side-pointing camera.
  • the tip section may further include a side fluid injector configured for cleaning the side-pointing camera and/or the discrete side illuminator.
  • a multi-camera endoscope comprising: an elongated shaft terminating with a tip section turnable by way of a bending section, wherein the tip section comprises: a front-pointing camera and a discrete front illuminator associated therewith; a front fluid injector configured for cleaning at least one of the front- pointing camera and the discrete front illuminator; a side-pointing camera and a discrete side illuminator associated therewith; a side fluid injector configured for cleaning at least one of the side-pointing camera and the discrete side illuminator; a working channel configured for insertion of a surgical tool; and a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted.
  • a multi-camera endoscopy system comprising: an endoscope comprising a handle and an elongated shaft terminating with a tip section turnable by way of a bending section, wherein the tip section comprises: a front-pointing camera and a discrete front illuminator associated therewith, a front fluid injector configured for cleaning at least one of the front-pointing camera and the discrete front illuminator, a side-pointing camera and a discrete side illuminator associated therewith, a side fluid injector configured for cleaning at least one of the side-pointing camera and the discrete side illuminator, a working channel configured for insertion of a surgical tool, and a pathway fluid injector for inflating and/or cleaning a body cavity into which the endoscope is inserted; a controller connected to the handle of the endoscope by way of a utility cable; and a display connected to the controller and configured to display video streams received from the front and side-pointing cameras.
  • the front-pointing camera and the side -pointing camera are pointing approximately 100 to 145 degrees relative to one another.
  • a center of the side -pointing camera is positioned approximately 7 to 11 millimeters from a distal end of the tip section.
  • each of the discrete front and side illuminators comprises a light- emitting diode (LED).
  • LED light- emitting diode
  • At least one of the discrete front and side illuminators is configured to emit white light. In some embodiments, at least one of the discrete front and side illuminators is configured to emit ultraviolet light.
  • At least one of the discrete front and side illuminators is configured to emit infrared light. In some embodiments, at least one of the discrete front and side illuminators is configured to emit near-infrared light.
  • the discrete front and side illuminators are configured to emit light in different wavelengths.
  • the tip section further comprises an additional discrete front illuminator configured to emit light having a different wavelength than the discrete front illuminator.
  • the additional discrete front illuminator and the discrete front illuminator are configured to simultaneously emit light, each at a different wavelength.
  • the tip section further comprises an additional discrete side illuminator configured to emit light having a different wavelength than the discrete side illuminator.
  • each of the front-pointing camera and the side-pointing camera comprises a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS) image sensor.
  • CCD Charge Coupled Device
  • CMOS Complementary Metal Oxide Semiconductor
  • the front and side fluid injectors are connected to a same fluid supply channel.
  • the pathway fluid injector is connected to the fluid supply channel, together with the front and side fluid injectors.
  • At least one of the front and side-pointing cameras comprises a lens assembly providing a field of view of 90 degrees or more.
  • At least one of the front and side-pointing cameras comprises a lens assembly providing a field of view of 120 degrees or more. In some embodiments, at least one of the front and side-pointing cameras comprises a lens assembly providing a field of view of 150 degrees or more.
  • the front-pointing camera comprises a lens assembly providing a focal length of approximately 3-100 millimeters.
  • the side -pointing camera comprises a lens assembly providing a focal length of approximately 2-33 millimeters.
  • the tip section further comprises an opposite side-pointing camera pointing at a direction essentially opposite to the side-pointing camera.
  • the tip section further comprises a perpendicular side-pointing camera pointing at a direction essentially perpendicular to the side-pointing camera.
  • the endoscope is a colonoscope.
  • fields of view of the front-pointing camera and side-pointing camera are at least partially overlapping, such that an object of interest viewed via the side- pointing camera remains in the field of view of the side-pointing camera while the tip section is being turned towards the object, and at least until the object becomes visible through the front-pointing camera.
  • the utility cable comprises: a fluid channel for providing a fluid to at least one of the injectors; a data cable for receiving video signals from the front and side-pointing cameras; and a power cable for providing electrical power to the front and side- pointing cameras and to the discrete front and side illuminators.
  • the controller is configured to process and combine video signals received from the front and side-pointing cameras into a single panoramic video view.
  • Fig. 1 shows a cross sectional view of a prior art endoscope
  • Fig. 2 shows a cross section of a multi-camera endoscope, according to some embodiments
  • Fig. 3 shows a perspective view of a multi-camera endoscope, according to some embodiments
  • Fig. 4 shows a cross-sectional view of a bending section of a multi-camera endoscope, according to some embodiments
  • Figs. 5 A-B show a cross-sectional views of tip sections of multi-camera endoscopes, according to some embodiments
  • Fig. 6 shows a semi-pictorial view of a multi-camera endoscopy system, according to some embodiments
  • Figs. 7A-D show perspective views of multiple tip section configurations, according to some embodiments
  • Fig. 8 shows a perspective view of a multi-camera endoscope, according to some embodiments.
  • Fig. 9 shows a perspective view of a multi-camera endoscope, according to some embodiments.
  • An aspect of some embodiments relates to an endoscope having a tip section equipped with two or more cameras.
  • one of the cameras is positioned at a distal end of the tip section and points forward, and the remaining camera(s) is positioned further back in the tip section, and points sideways.
  • one of the cameras is positioned at a distal (front) end surface of the tip section and points forward, and the remaining camera(s) is positioned further back in the tip section, and points sideways.
  • two or more cameras are positioned in proximity to or at the distal end of the tip section and point sideways such that the field of view provided by the cameras covers a front and side views.
  • no camera is positioned at the distal (front) end surface of the tip section (or in other words, no camera is pointing directly forward), still the field of view of the side cameras allows view of the front direction of the tip and accordingly of the endoscope.
  • This configuration advantageously, may allow for a higher rate of detection, compared to conventional configurations, of pathological objects that exist in the body cavity in which the endoscope operates.
  • Fig. 1 shows a cross sectional view of a prior art endoscope, in this example a colonoscope 100, used within a colon 120 of a patient.
  • the human colon includes a series of annular muscles which appear in this figure as folds 122 protruding from an inner surface 124 of the colon.
  • Endoscope 100 includes a front-pointing camera 104 positioned at a distal end 102 of the colonoscope.
  • Camera 104 typically has a wide field of view 106.
  • the operator advances the endoscope 100 while viewing images (commonly a video feed) transmitted by camera 104.
  • a polyp such as polyp 110 or 112
  • the operator may insert a surgical tool (not shown) through a working channel 105 to remove, treat and/or extract a sample of the polyp or its entirety for biopsy.
  • a polyp such as polyp 114 may be located on an inner side of a fold 126, such that it is hidden from the field of view 106 of camera 104. This phenomena greatly contributes to the common statistics, according to which as many as 12-24% of polyps are missed during colonoscopy. Missing polyps, or a "false negative" diagnosis, may result in late discovery of cancer.
  • Endoscope 200 may include an elongated shaft 203 (not fully shown) terminating with a tip section 202 which is turnable by way of a bending section 204.
  • tip section may include a front-pointing camera 206 as well as a side-pointing camera 210. While front-pointing camera 206 may be able to detect, based on its field of view 208, polyps such as polyps 218 and 220, side-pointing camera 210 may be further able to detect polyps which are normally hidden from the front-pointing camera, such as polyp 216.
  • side -pointing camera 210 may detect polyps circumferentially, 360 degrees around the endoscope. This may enable the detection of polyps such as a polyp 222, which is, similar to polyp 216, located on an inner side of a fold. In other configurations (not shown), two or more side- pointing cameras may exist in the tip section, each having a different (or an overlapping, to some degree) field of view.
  • the fields of view of front-pointing camera 206 and side-pointing camera 210 are at least partially overlapping, such that an object of interest (such as a polyp or another pathology) viewed via the side-pointing camera remains in the field of view of this camera while the tip section is being turned towards the object, and at least until the object becomes visible through the front-pointing camera.
  • an object of interest such as a polyp or another pathology
  • This may be beneficial when a polyp is discovered by side-pointing camera 210, and the operator desires to perform a surgical operation on that polyp using a surgical tool inserted through a working channel (not shown in the figure) which has an opening in a distal end surface of tip section 202, next to front- pointing camera 206.
  • tip section 202 may need to be turned towards the polyp. It may greatly assist the operator if the fields of view of front- pointing camera 206 and side-pointing camera 210 have some overlap, so that the polyp remains in sight throughout the turning of the tip section and the operator does not get disoriented.
  • Endoscope 300 may include an elongated shaft (not shown), a bending section (partially shown) 302 and a tip section 304 which terminates the endoscope.
  • Bending section 302 may include a plurality of links, such as links 302a-c, which enable the turning of tip section 304 in different directions. In a different configuration (not shown), a bending section may be constructed differently, as long as it enables the turning of the tip section in different directions. Bending section 302 may be covered with an elastic sheath (not shown), which may also extend to cover the elongated shaft.
  • Tip section 304 may include therein a front-pointing camera 304 which may capture images through a hole in a distal end surface 306 of the tip section.
  • a discrete front illuminator 308, which is optionally a light-emitting diode (LED), may be associated with front-pointing camera 304 and used for illuminating its field of view through another hole in distal end surface 306.
  • the LED may be a while light LED, an infrared light LED, a near infrared light LED or an ultraviolet light LED.
  • discrete in regard to front illuminator 308, may refer to an illumination source which generates light internally - in contrast to a non-discrete illuminator which may be, for example, a fiber optic merely transmitting light generated remotely.
  • a non-discrete illuminator which may be, for example, a fiber optic merely transmitting light generated remotely.
  • two or more discrete front illuminators may be present in the tip section, such as for supplying overall stronger illumination and/or for increasing the angular coverage of the illumination. These two or more discrete front illuminators may be located next to one another so that they share a same protective window on the distal end surface of the tip section.
  • a front fluid injector 310 may be used for cleaning at least one of front-pointing camera
  • Front fluid injector 310 may be slightly elevated from distal end surface 306, to enable it to inject fluid, from its side 310a, onto front-pointing camera 304 and discrete front illuminator 308. Front fluid injector 310 may be configured to inject fluids such as water, air and/or the like. Distal end surface 306 may further include a hole defining a working channel 312. Working channel 312 may be a hollow tube configured for insertion of a surgical tool to operate on various tissues. For example, miniature forceps may be inserted through working channel 312 in order to remove a polyp or sample of which for biopsy.
  • a pathway fluid injector 314, defined by another hole in distal end surface 306, may be used for inflating and/or cleaning the body cavity into which endoscope 300 is inserted. Inflation may be performed by flowing air or another gas through pathway fluid injector 314, and may be beneficial for cases in which the body cavity, such as the colon, is shriveled or otherwise does not allow for efficient inspection. Cleaning may be achieved, for example, by injecting a liquid, such as water or saline, on an unclean area of the body cavity. Furthermore, pathway fluid injector 314 (or a different tube, not shown) may be used for applying suction, in order to evacuate various liquids and/or solids which exist in the body cavity and interfere with the inspection.
  • Tip section 304 may further include therein a side-pointing camera 316 which may capture images through a hole in a cylindrical surface 305 of the tip section.
  • a discrete side illuminator 322 which is optionally similar to discrete front illuminator 308, may be associated with front-pointing camera 304 and used for illuminating its field of view through another hole in cylindrical surface 305.
  • two or more discrete side illuminators may be present in the tip section, such as for supplying overall stronger illumination and/or for increasing the angular coverage of the illumination. These two or more discrete side illuminators may be located next to one another so that they share a same protective window on the cylindrical surface of the tip section.
  • a side fluid injector 320 may be used for cleaning at least one of side-pointing camera 304 and discrete side illuminator 322.
  • side fluid injector 320 and side -pointing camera 316 may be located in a depression 318 in the cylindrical surface. This way, side fluid injector 320 may be elevated from depression 318 but still not significantly protrude from the level of cylindrical surface 305. The elevation of side fluid injector 320 may enable it to inject fluid, from its side 320a, onto side -pointing camera 316.
  • one or more discrete side illuminators may also be included in the depression, so that fluid injected from the side fluid injector may reach them.
  • a side-pointing camera, one or more side illuminators and a side fluid injector may not be located in a depression, but rather be on essentially the same level as the cylindrical surface of the tip section.
  • FIG. 4 shows a cross-sectional view of a bending section 400 of a multi-camera endoscope, such as multi-camera endoscope 300 of Fig. 3.
  • a plurality of steering cable eyes such as four eyes 408, are positioned on the internal walls of bending section 400. Through these eyes 408, steering cables are threaded, to enable the maneuvering of bending section 400.
  • Bending section 400 may also include a working channel 402, through which surgical tools may be inserted, a fluid channel 406, through which fluids and/or liquids may be infused, and an electrical channel 404, through which a plurality of electrical cables may be threaded, for transmitting video signals from the cameras and for supplying power to the cameras and the discrete illuminators.
  • Fig. 4 only shows a single working channel 402, although in a different configuration (not shown), more than one working channel may exist, to enable the insertion of multiple surgical tools simultaneously.
  • only one fluid channel 406 is shown, although in a different configuration (not shown) more than one fluid channel may be used, such as for separately feeding at least one of a front fluid injector, a side fluid injector and/or a pathway fluid injector, as well as for separately providing suction through the pathway fluid injector.
  • Fig. 4 only shows a single working channel 402, although in a different configuration (not shown), more than one working channel may exist, to enable the insertion of multiple surgical tools simultaneously.
  • only one fluid channel 406 is shown, although in a different configuration (not shown) more than one fluid channel may be used, such as for separately feeding at least one of a front fluid injector, a side fluid injector and/or a pathway fluid injector, as well as for separately providing suction through the pathway fluid injector.
  • one or more of the electrical cables threaded through the elongated shaft and/or the bending section may be separated into a plurality of tubes, for example in order to distance cables causing magnetic induction from cables which may be influenced by this phenomena.
  • Tip section 500a may include a front-pointing image sensor 502, such as Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS) image sensor.
  • Front-pointing image sensor 502 may be mounted on an integrated circuit board 506, which may be rigid or flexible.
  • Integrated circuit board 506 may supply front-pointing image sensor 502 with the necessary electrical power, and may derive still images and/or video feeds captured by the image sensor.
  • Integrated circuit board 506 may be connected to a set of electrical cables (not shown) which may be threaded through an electrical channel running through the elongated shaft of the endoscope.
  • Front-pointing image sensor 502 may have a lens assembly 504 mounted on top of it and providing the necessary optics for receiving images.
  • Lens assembly 504 may include a plurality of lenses, static or movable, which may provide a field of view of at least 90 degrees and up to essentially 180 degrees.
  • Lens assembly 504 may provide a focal length of about 3 to 100 millimeters.
  • Front-pointing image sensor 502 and lens assembly 504, with or without integrated circuit board 506, may be jointly referred to as a "front pointing camera".
  • One or more discrete front illuminators 508 may be placed next to lens assembly 504, for illuminating its field of view.
  • discrete front illuminators 508 may be attached to the same integrated circuit board 506 on which front-pointing image sensor 502 is mounted (this configuration is not shown).
  • Tip section 500a may include a side-pointing image sensor 512, such as Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS) image sensor.
  • Front-pointing image sensor 512 may be mounted on an integrated circuit board 516, which may be rigid or flexible.
  • Integrated circuit board 516 may supply side-pointing image sensor 512 with the necessary electrical power, and may derive still images and/or video feeds captured by the image sensor.
  • Integrated circuit board 516 may be connected to a set of electrical cables (not shown) which may be threaded through an electrical channel running through the elongated shaft of the endoscope.
  • Side -pointing image sensor 512 may have a lens assembly 514 mounted on top of it and providing the necessary optics for receiving images.
  • Lens assembly 514 may include a plurality of lenses, static or movable, which may provide a field of view of at least 90 degrees and up to essentially 180 degrees.
  • Lens assembly 514 may provide a focal length of about 2 to 33 millimeters.
  • Side -pointing image sensor 512 and lens assembly 514, with or without integrated circuit board 516, may be jointly referred to as a "side pointing camera".
  • One or more discrete side illuminators 518 may be placed next to lens assembly 514, for illuminating its field of view.
  • discrete side illuminators 518 may be attached to the same integrated circuit board 516 on which side-pointing image sensor 512 is mounted (this configuration is not shown).
  • integrated circuit boards 506 and 516 may be a single integrated circuit board on which both front and side-pointing image sensors 502 and 512 are mounted.
  • the integrated circuit board may be essentially L-shaped.
  • Front and side -pointing image sensors 502 and 512 may be similar or identical in terms of, for example, field of view, resolution, light sensitivity, pixel size, focal length, focal distance and/or the like.
  • side -pointing image sensor 512 and lens assembly 514 are advantageously positioned relatively close to the distal end surface of tip section 500a.
  • a center of the side-pointing camera (which is the center axis of side-pointing image sensor 512 and lens assembly 514) is positioned approximately 7 to 11 millimeters from the distal end of the tip section. This is enabled by an advantageous miniaturizing of the front and side-pointing cameras, which allows for enough internal space in the tip section for angular positioning of the cameras without colliding.
  • Tip section 500b may include a front-pointing image sensor 502, such as Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS) image sensor.
  • Front-pointing image sensor 502 may be mounted on an integrated circuit board 506, which may be rigid or flexible.
  • Integrated circuit board 506 may supply front-pointing image sensor 502 with the necessary electrical power, and may derive still images and/or video feeds captured by the image sensor.
  • Integrated circuit board 506 may be connected to a set of electrical cables (not shown) which may be threaded through an electrical channel running through the elongated shaft of the endoscope.
  • Front- pointing image sensor 502 may have a lens assembly 504 mounted on top of it and providing the necessary optics for receiving images.
  • Lens assembly 504 may include a plurality of lenses, static or movable, which may provide a field of view of at least 90 degrees and up to essentially 180 degrees.
  • Lens assembly 504 may provide a focal length of about 3 to 100 millimeters.
  • Front-pointing image sensor 502 and lens assembly 504, with or without integrated circuit board 506, may be jointly referred to as a "front pointing camera".
  • One or more discrete front illuminators 508 may be placed next to lens assembly 504, for illuminating its field of view.
  • discrete front illuminators 508 may be attached to the same integrated circuit board 506 on which front-pointing image sensor 502 is mounted (this configuration is not shown).
  • Tip section 500b may include, in addition to side -pointing image sensor 512a, another side-pointing image sensor 512b.
  • Side-pointing image sensors 512a and 512b may include Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS) image sensor.
  • Side-pointing image sensors 512a and 512b may be mounted on integrated circuit boards 516a and 516b, respectively, which may be rigid or flexible.
  • Integrated circuit boards 516a and 516b may supply side-pointing image sensors 512a and 512b with the necessary electrical power, and may derive still images and/or video feeds captured by the image sensor.
  • Integrated circuit boards 516a and 516b may be connected to a set of electrical cables (not shown) which may be threaded through an electrical channel running through the elongated shaft of the endoscope.
  • Side -pointing image sensors 512a and 512b may have lens assemblies 514a and 514b, respectively, mounted on top of them and providing the necessary optics for receiving images.
  • Lens assemblies 514a and 514b may include a plurality of lenses, static or movable, which may provide a field of view of at least 90 degrees and up to essentially 180 degrees.
  • Lens assemblies 514a and 514b may provide a focal length of about 2 to 33 millimeters.
  • Side -pointing image sensors 512a and 512b and lens assemblies 514a and 514b, with or without integrated circuit boards 516a and 516b, respectively, may be jointly referred to as a "side pointing cameras".
  • Discrete side illuminators 518a and 518b may be placed next to lens assemblies 514a and 514b, respectively, for illuminating its field of view.
  • discrete side illuminators 518a and 518b may be attached to the same integrated circuit boards 516a and 516b on which side -pointing image sensors 512a and 512 b are mounted (this configuration is not shown).
  • integrated circuit boards 506, 516a and 516b may be a single integrated circuit board on which front and side-pointing image sensors 502, 512a and 512b are mounted.
  • Front and side -pointing image sensors 502, 512a and 512b may be similar, identical or distinct in terms of, for example, field of view, resolution, light sensitivity, pixel size, focal length, focal distance and/or the like.
  • side -pointing image sensors 512a and 512b and lens assemblies 514a and 514b are advantageously positioned relatively close to the distal end surface of tip section 500b.
  • a center of the side -pointing cameras (which is the center axis of side- pointing image sensors 512a and 512b and lens assemblies 514a and 514b) is positioned approximately 7 to 11 millimeters from the distal end of the tip section. This is enabled by an advantageous miniaturizing of the front and side-pointing cameras, which allows for enough internal space in the tip section for angular positioning of the cameras without colliding.
  • the front and side-pointing cameras are all positioned on the same (imaginary) plain which "divides" tip section 500b into two equal parts along its length.
  • each of the side-pointing cameras is perpendicular to the front pointing camera.
  • Fig. 6 shows a semi-pictorial view multi-camera endoscopy system 600.
  • System 600 may include a multi-camera endoscope 602, such as the endoscope of Figs. 2, 3, 4 and/or 5.
  • Multi-camera endoscope 602 may include a handle 604, from which an elongated shaft 606 emerges. Elongated shaft 606 terminates with a tip section 608 which is turnable by way of a bending section 610.
  • Handle 604 may be used for maneuvering elongated shaft 606 within a body cavity; the handle may include one or more knobs and/or switches 605 which control bending section 610 as well as functions such as fluid injection and suction. Handle 604 may further include a working channel opening 612 through which surgical tools may be inserted.
  • a utility cable 614 may connect between handle 604 and a controller 616.
  • Utility cable 614 may include therein one or more fluid channels and one or more electrical channels.
  • the electrical channel(s) may include at least one data cable for receiving video signals from the front and side -pointing cameras, as well as at least one power cable for providing electrical power to the cameras and to the discrete illuminators.
  • Controller 616 may govern power transmission to the endoscope's 602 tip section 608, such as for the tip section's cameras and illuminators. Controller 616 may further control one or more fluid, liquid and/or suction pump which supply corresponding functionalities to endoscope 602.
  • One or more input devices such as a keyboard 618, may be connected to controller 616 for the purpose of human interaction with the controller.
  • an input device such as a keyboard, may be integrated with the controller in a same casing.
  • a display 620 may be connected to controller 616, and configured to display images and/or video streams received from the cameras of multi-camera endoscope 602.
  • Display 620 may further be operative to display a user interface for allowing a human operator to set various features of system 600.
  • the video streams received from the different cameras of multi-camera endoscope 602 may be displayed separately on display 620, either side-by-side or interchangeably (namely, the operator may switch between views from the different cameras manually).
  • these video streams may be processed by controller 616 to combine them into a single, panoramic video frame, based on an overlap between fields of view of the cameras.
  • two or more displays may be connected to controller 616, each for displaying a video stream from a different camera of the multi- camera endoscope.
  • FIG. 7A-D in which multiple configurations 700, 720, 740 and 760 of a tip section are shown.
  • a front-pointing camera 702 and a side-pointing camera 704 are essentially perpendicular to one another, and have, correspondingly, perpendicular fields of view.
  • a front -pointing camera 722 is essentially perpendicular to a first side-pointing camera 724 and a second side -pointing camera 726.
  • First and second side- pointing cameras 724-726 are pointing perpendicularly to one another, and are positioned essentially 90 degrees apart in the cylindrical surface of the tip section.
  • a first and a second side-pointing cameras may be positioned more than 90 degrees apart in the cylindrical surface of the tip section, such as 120-150 degrees apart or 150-180 degrees apart.
  • the first and second side-pointing cameras may be positioned in 180 degrees apart, in opposite sides of the cylindrical surface of the tip section, so that they point in opposite directions.
  • three or more side-pointing cameras may be positioned in the cylindrical surface of the tip section, for example, three cameras having 120 degrees in between them.
  • a side -pointing camera 744 is pointing slightly backwards, so that it forms an angle larger than 90 degrees relative to a front-pointing camera 742. As an example, an angle of 120 degrees is shown. In another configuration (not shown), the angle is 100-145 degrees. In configuration 760, two opposing side cameras, 764 and 766, are shown, which are pointing slightly backwards, so that they each form an angle larger than 90 degrees relative to a front-pointing camera 762. As an example, an angle of 120 degrees is shown. In another configuration (not shown), the angle is 100-145 degrees.
  • three or more side-pointing cameras may be positioned in the cylindrical surface of the tip section, each pointing slightly backwards and having an certain angle in between; in the case of three cameras, they may have an angle of 120 degrees in between them.
  • Endoscope 800 includes an elongated shaft 802 which typically includes a bending section (not shown) and a tip section 804 which terminates the endoscope.
  • Tip section 804 includes three side-pointing cameras 816a, 816b (not shown) and 816c (not shown).
  • Discrete side illuminators (for example LEDs), not shown, may be associated with the side-pointing cameras 816a-c for illuminating their respective fields of view 817a-c.
  • Tip section 804 includes further includes a working channel 812 which may be a hollow opening configured for insertion of a surgical tool to operate on various tissues. For example, miniature forceps may be inserted through working channel 812 in order to remove a polyp or sample of which for biopsy.
  • Tip 804 may further include other elements/components, (for example, as described herein according to various embodiments) such as fluid injector(s) for cleaning the cameras and/or there illuminators and pathway fluid injector(s) for inflating and/or cleaning the body cavity into which endoscope 800 is inserted.
  • fluid injector(s) for cleaning the cameras and/or there illuminators
  • pathway fluid injector(s) for inflating and/or cleaning the body cavity into which endoscope 800 is inserted.
  • Endoscope 900 is similar to endoscope 800 how ever does not include a working channel.
  • Elongated shaft 902, tip section 904, side -pointing cameras 916a, 916b (not shown) and 916c (not shown), and their respective fields of view 917a-c may be similar to elongated shaft 802, tip section 804, side -pointing cameras 816a, 816b (not shown) and 816c (not shown), and their respective fields of view 817a-c of endoscope 800.
  • each of the words “comprise” “include” and “have”, and forms thereof, are not necessarily limited to members in a list with which the words may be associated.

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  • Health & Medical Sciences (AREA)
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  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
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  • Heart & Thoracic Surgery (AREA)
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  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)

Abstract

L'invention concerne une section de pointe d'un endoscope à caméras multiples, la section de pointe comprenant une caméra à orientation avant et un dispositif d'éclairage avant distinct associé à celle-ci, au moins deux caméras à orientation latérale positionnées au niveau ou à proximité d'une extrémité distale de ladite section de pointe, chacune desdites au moins deux caméras à orientation latérale ayant un dispositif d'éclairage latéral distinct associé à celles-ci, et un canal de travail configuré pour introduire un outil chirurgical.
EP13847670.0A 2012-10-18 2013-10-17 Endoscope à caméras multiples Withdrawn EP2908714A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/655,120 US9872609B2 (en) 2009-06-18 2012-10-18 Multi-camera endoscope
PCT/IL2013/050840 WO2014061023A1 (fr) 2012-10-18 2013-10-17 Endoscope à caméras multiples

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EP2908714A1 true EP2908714A1 (fr) 2015-08-26
EP2908714A4 EP2908714A4 (fr) 2016-06-29

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JP (1) JP2015533300A (fr)
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CN104717916A (zh) 2015-06-17
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