WO2022117000A1 - 内窥镜系统 - Google Patents

内窥镜系统 Download PDF

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Publication number
WO2022117000A1
WO2022117000A1 PCT/CN2021/134814 CN2021134814W WO2022117000A1 WO 2022117000 A1 WO2022117000 A1 WO 2022117000A1 CN 2021134814 W CN2021134814 W CN 2021134814W WO 2022117000 A1 WO2022117000 A1 WO 2022117000A1
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WO
WIPO (PCT)
Prior art keywords
lens group
endoscope
objective lens
connection housing
endoscope system
Prior art date
Application number
PCT/CN2021/134814
Other languages
English (en)
French (fr)
Inventor
刘小华
王夏天
Original Assignee
北京威斯顿亚太光电仪器有限公司
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Application filed by 北京威斯顿亚太光电仪器有限公司 filed Critical 北京威斯顿亚太光电仪器有限公司
Priority to US18/255,331 priority Critical patent/US20240023788A1/en
Priority to DE112021005258.6T priority patent/DE112021005258T5/de
Publication of WO2022117000A1 publication Critical patent/WO2022117000A1/zh

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    • 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
    • A61B1/00105—Constructional details of the endoscope body characterised by modular construction
    • 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
    • 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
    • A61B1/00002—Operational features of endoscopes
    • A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
    • A61B1/00009—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope
    • 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
    • A61B1/00002—Operational features of endoscopes
    • A61B1/00011—Operational features of endoscopes characterised by signal transmission
    • A61B1/00018—Operational features of endoscopes characterised by signal transmission using electrical cables
    • 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
    • A61B1/00096—Optical elements
    • 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
    • A61B1/00112—Connection or coupling means
    • A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
    • A61B1/00124—Connectors, fasteners and adapters, e.g. on the endoscope handle electrical, e.g. electrical plug-and-socket connection
    • 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
    • A61B1/00112—Connection or coupling means
    • A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
    • A61B1/00126—Connectors, fasteners and adapters, e.g. on the endoscope handle optical, e.g. for light supply cables
    • 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
    • A61B1/00112—Connection or coupling means
    • A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
    • A61B1/00128—Connectors, fasteners and adapters, e.g. on the endoscope handle mechanical, e.g. for tubes or pipes
    • 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
    • A61B1/00188—Optical arrangements with focusing or zooming features
    • 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
    • A61B1/002—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 having rod-lens arrangements
    • 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
    • A61B1/042—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 a proximal camera, e.g. a CCD camera
    • 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
    • A61B1/0661—Endoscope light sources
    • A61B1/0669—Endoscope light sources at proximal end of an endoscope
    • 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
    • A61B1/0661—Endoscope light sources
    • A61B1/0676—Endoscope light sources at distal tip of an endoscope
    • 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
    • A61B1/07—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 using light-conductive means, e.g. optical fibres
    • 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
    • A61B1/00078—Insertion part of the endoscope body with stiffening means

Definitions

  • Embodiments of the present disclosure relate to an endoscope system.
  • endoscope As a medical optical instrument, endoscope has a history of more than 200 years. It has gradually developed from a classic rigid endoscope composed of optical lenses in the initial stage to a new type of endoscope integrating modern technology, such as fiber endoscope and electronic endoscope. endoscopy, capsule endoscopy and ultrasound endoscopy.
  • Embodiments of the present disclosure provide an endoscope system, which includes a rigid endoscope and a camera system;
  • the rigid endoscope includes an outer scope tube and a connection housing;
  • the camera system includes a photographic objective lens group and an image sensor;
  • the outer scope tube includes a first One end and the second end, the connection housing is directly connected with the second end of the external mirror tube, the photographic objective lens group is arranged on the side of the connection housing away from the external mirror tube, and the image sensor is arranged on a side of the photographic objective lens group away from the connection housing.
  • the camera system is detachably connected to the connection housing, the photographic objective lens group is configured to directly magnify the image transmitted by the rigid endoscope, and the image sensor is configured to convert the magnified image into an electrical signal.
  • the endoscope system removes the eyepiece group in the optical path of the rigid endoscope and the mechanical structures such as the matching eyecup and connection port, and gathers the photographic objective lens into the eyepiece group.
  • the imaging mode of the outgoing beam is adjusted to the imaging mode in which the magnifying objective lens performs secondary magnification on the relay image of the rod lens group.
  • At least one embodiment of the present disclosure provides an endoscope system including a rigid endoscope including an outer scope tube and a connection housing; and a camera system including a photographic objective lens group and an image sensor; wherein the outer scope tube includes a first end and a second end, the connecting housing is directly connected with the second end of the outer mirror tube, the photographic objective lens group is arranged on the side of the connecting housing away from the outer mirror tube, The image sensor is arranged on a side of the photographic objective lens group away from the connection housing, the camera system is detachably connected to the connection housing, and the photographic objective lens group is configured to directly face the rigid endoscope The image transmitted by the mirror is enlarged for imaging, and the image sensor is configured to convert the enlarged image into an electrical signal.
  • the magnification of the photographic objective lens group ranges from 100 to 300 times.
  • an optical component for magnifying an image is not disposed inside the connection housing.
  • the camera system includes a camera system housing, the photographic objective lens group and the image sensor are arranged in the camera system housing, and the camera system
  • the system housing is detachably connected to the connection housing.
  • the photographic objective lens group is a focusing lens group.
  • the rigid endoscope further includes: at least one light-emitting element located at the first end of the outer scope tube; an objective lens group located at the The outer mirror tube is located inside the light-emitting element and is located at one end of the light-emitting element close to the connection housing; and a rod lens group is located inside the outer mirror tube and is located at an end of the objective lens group close to the connection housing.
  • a portion of the rod lens group extends into the connection housing.
  • connection housing includes a power supply interface, and the power supply interface is configured to be connected to the at least one light-emitting element.
  • the radial dimension of the connection housing is larger than the radial dimension of the outer scope tube.
  • connection housing and the camera system are connected in a screw connection manner.
  • connection housing is connected to the camera system by means of snaps.
  • the material of the connection housing includes medical polymer plastic.
  • the material of the outer scope tube includes medical stainless steel.
  • connection housing and the external scope tube are connected by colloid.
  • FIG. 1 is a schematic structural diagram of an endoscope system
  • FIG. 2 is a schematic structural diagram of another endoscope system
  • FIG. 3 is a schematic structural diagram of an endoscope system according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of an optical path of an endoscope system including an eyepiece group.
  • FIG. 5 is a schematic diagram of an optical path of an endoscope system according to an embodiment of the present disclosure.
  • the new endoscope can overcome the technical defects of the classic rigid endoscope in some aspects and has high application value, the rigid endoscope has unique advantages in terms of image quality and cost-effectiveness, and is currently used in clinical diagnosis and treatment. The field still has a very high application penetration rate and market share. In order to further demonstrate the unique advantages of rigid endoscopes, it is of great significance to carry out technical research and development.
  • FIG. 1 is a schematic structural diagram of an endoscope system.
  • the endoscope system 30 includes an outer mirror tube 1 , an inner mirror tube 3 , a main mirror body 6 , a light guide port 12 , an illumination fiber bundle 5 , an objective lens group 2 , a rod lens group 4 , and an eyepiece group 7 and the eyecup 16; the objective lens group 2 and the rod lens group 4 are arranged in the outer mirror tube 5; the eyepiece group 7 is arranged in the main mirror body 6, and the light guide port 12 is arranged on the main mirror body 6, and is configured with The light sources are connected; the illumination fiber bundle 5 can be extended from the light guide port 12 to one end of the external mirror tube 5, so that the illumination function can be realized.
  • the endoscope system 30 further includes an electronic camera system 31 , and the electronic camera system 31 includes a camera system housing 10 and a photographic objective lens group 8 and an image sensor 9 disposed within the camera system housing 10 .
  • the electronic camera system 31 can be connected to the eyecup 16 through the connection port 11 .
  • FIG. 2 is a schematic structural diagram of another endoscope system.
  • the endoscope system 30 includes an external mirror tube 1, a main mirror body 6, a power supply interface 15, a light-emitting chip 14, an objective lens group 2, a rod lens group 4, an eyepiece group 7 and an eyecup 16; an objective lens group 2 and the rod lens group 4 are arranged in the outer mirror tube 5; the eyepiece group 7 is arranged in the main mirror body 6, the power supply interface 15 is arranged on the main mirror body 6; the light-emitting chip 14 is arranged at one end of the outer mirror tube 1, It can be connected to the power supply interface 15 through wires, so that power can be supplied to the light-emitting chip 14 through the power supply interface 15 .
  • the endoscope system 30 further includes an electronic camera system 31 , and the electronic camera system 31 includes a camera system housing 10 and a photographic objective lens group 8 and an image sensor 9 disposed within the camera system housing 10 .
  • the electronic camera system 31 can be connected to the eyecup 16 through the connection port 11 .
  • the endoscope system shown in Figure 2 uses a light-emitting chip to replace the illuminating light beam, simplifies the structure of the inner and outer double mirror tubes of the rigid endoscope, and installs the optical components and the light-emitting chip in the outer mirror tube uniformly.
  • the aspherical lens manufactured by the molding process is used as the optical element of the endoscope.
  • the above design scheme improves the imaging quality with the dual physical mechanism of expanding the aperture of the optical system and using the aspheric imaging system to correct aberrations, replacing the optical fiber bundle with the light-emitting chip and using the molding process instead of the classical grinding and polishing process to manufacture the lens. cost.
  • the functions of the eyepiece group and the eyecup in the above-mentioned endoscope system are to amplify the relay image transmitted by the rod lens group and image it at an infinite distance for the human eye to observe.
  • the inventor of the present application noticed that the function of the eyepiece group and the eyecup in the above-mentioned endoscope system is to amplify the relay image transmitted by the rod lens group and image it at an infinite distance for the human eye to observe;
  • the rigid endoscope is usually used together with the electronic camera system, and there is almost no operation link in which the human eye directly observes the image behind the eyepiece. Therefore, the inventors of the present application believe that the eyepiece group in the rigid endoscope is a redundant component in the imaging optical system, and it is possible to optimize the design of the photographic objective lens, and directly perform secondary magnification and imaging on the relay image through the photographic objective lens.
  • components such as an eyecup and a connection port matched with the eyepiece group in the rigid endoscope can also be removed, thereby further reducing the cost of the rigid endoscope.
  • Embodiments of the present disclosure provide an endoscope system, which includes a rigid endoscope and a camera system;
  • the rigid endoscope includes an outer scope tube and a connection housing;
  • the camera system includes a photographic objective lens group and an image sensor;
  • the outer scope tube includes a first One end and the second end, the connection housing is directly connected with the second end of the external mirror tube, the photographic objective lens group is arranged on the side of the connection housing away from the external mirror tube, and the image sensor is arranged on a side of the photographic objective lens group away from the connection housing.
  • the camera system is detachably connected to the connection housing, the photographic objective lens group is configured to directly magnify the image transmitted by the rigid endoscope, and the image sensor is configured to convert the magnified image into an electrical signal.
  • the endoscope system By co-designing the imaging optical path of the rigid endoscope and the camera system, the endoscope system removes the mechanical structures such as the eyepiece group, the matching eye mask, and the connection port in the rigid endoscope, which effectively reduces the processing and assembly costs. Therefore, the cost performance of the instrument is improved, and the unique advantages of rigid endoscopes are fully demonstrated.
  • FIG. 3 is a schematic structural diagram of an endoscope system according to an embodiment of the present disclosure.
  • the endoscope system 30 includes a rigid endoscope 31 and a camera system 32;
  • the rigid endoscope 31 includes an external mirror tube 1 and a connecting housing 6;
  • the camera system 32 includes a photographic objective lens group 13 and an image sensor 9;
  • the external mirror tube 1 includes a first end 1A and a second end 1B, the connecting housing 6 is directly connected with the second end 1B of the external mirror tube 1, and the photographic objective lens group 13 is arranged on the connecting housing 6 away from the external mirror tube 1.
  • the image sensor 9 is disposed on the side of the photographic objective lens group 13 away from the connection housing 6 , the camera system 32 is detachably connected to the connection housing 6 , and the photographic objective lens group 13 is configured to directly transmit the image to the rigid endoscope 31
  • the image sensor 9 is configured to convert the magnified image into an electrical signal.
  • the camera system is detachably connected to the connection housing, no eyecup, connection port and other components are provided between the camera system and the connection housing, and the photographic objective lens group is configured to directly face the rigid
  • the image transmitted by the endoscope is magnified for imaging, and there is no need to additionally set an eyepiece group for magnifying the image transmitted by the rigid endoscope. Therefore, the endoscope system can at least omit components such as the eyepiece group, eyecup, connection port, etc., thereby greatly reducing the cost of the rigid endoscope, thereby reducing the cost of the entire endoscope system.
  • the rigid endoscope can be disposable and needs to be replaced frequently; therefore, reducing the cost of the rigid endoscope can greatly reduce the use cost of the entire product, with Strong product competitiveness.
  • the magnification of photographic objective 13 ranges from 100-300 times. Therefore, the endoscope system can magnify the image transmitted by the rigid endoscope to a required multiple only through the photographic objective lens group, and there is no need to additionally provide an eyepiece group for magnifying the image transmitted by the rigid endoscope. Therefore, the endoscope system adjusts the focal length and working distance by optimizing the design of the photographic objective lens, and can achieve the same magnification as the eyepiece when directly performing secondary magnification imaging on the relay image. Therefore, for the current use of endoscopes, the photographic objective lens group can fully realize the function of the eyepiece group, so that redundant components such as the existing rigid endoscope retaining the eyepiece group, eyecups, and connection ports can be eliminated.
  • the magnification of photographic objective 13 ranges from 180-220 times; for example, the magnification of photographic objective 13 may be 200 times.
  • connection housing 6 no optical components for magnification are provided inside the connection housing 6 .
  • the camera system 32 includes a camera system housing 10 in which the photographic objective lens group 13 and the image sensor 9 are disposed, and the camera system housing 10 is detachably connected to the connection housing 6 .
  • the camera system housing 10 is directly and detachably connected to the connection housing 6 without passing through other components.
  • the photographic objective lens group 13 is a focusing lens group.
  • the embodiments of the present disclosure include, but are not limited to, the photographic objective lens group may also be a fixed-focus lens group.
  • the rigid endoscope 31 further includes at least one light-emitting element 14, an objective lens group 2 and a rod lens group 4; the at least one light-emitting element 14 is located at the first end 1A of the outer mirror tube 1; the objective lens The group 2 is located inside the outer mirror tube 1 and is located at the end of the light-emitting element 14 close to the connection housing 6 ;
  • FIG. 4 is a schematic diagram of an optical path of an endoscope system including an eyepiece group
  • FIG. 5 is a schematic diagram of an optical path of an endoscope system according to an embodiment of the present disclosure.
  • the reflected light of the object to be imaged is transmitted to the eyepiece group 7 through the objective lens group 1 and the rod lens group 4 .
  • the image of the object to be imaged is enlarged and focused again through the photographic objective lens group 8 . are converted into electrical signals on the image sensor 9 .
  • FIG. 4 is a schematic diagram of an optical path of an endoscope system including an eyepiece group
  • FIG. 5 is a schematic diagram of an optical path of an endoscope system according to an embodiment of the present disclosure.
  • the reflected light of the object to be imaged is directly transmitted to the photographic objective lens group 13 through the objective lens group 1 and the rod lens group 4 , and the image of the object to be imaged directly passes through the photographic objective lens group 13 for magnification and focusing, and then is displayed on the image sensor 9 are converted into electrical signals.
  • the function played by the photographic objective lens group 13 shown in FIG. 5 is equivalent to the common function of the eyepiece group 7 and the photographic objective lens group 8 shown in FIG. 4 .
  • the rod lens assembly 4 partially extends into the connection housing 6 for better coupling with the photographic objective lens assembly 13 .
  • connection housing 6 includes a power supply interface 15 configured to connect with the at least one light emitting element 14 .
  • the radial dimension of the connection housing 6 is larger than the radial dimension of the outer mirror tube 1 .
  • connection housing 6 is connected to the camera system 32 (eg, the camera system housing 10 ) using a threaded connection.
  • connection housing 6 is snap-connected to the camera system 32 (eg, the camera system housing 10 ).
  • the embodiments of the present disclosure include, but are not limited to, the connection housing and the camera system may also be connected in other detachable manners.
  • the material of the connection housing 6 includes a medical polymer plastic.
  • the embodiments of the present disclosure include but are not limited thereto, and the material of the connection housing may also be a suitable material.
  • the material of the outer scope 1 includes medical stainless steel.
  • connection housing 6 and the outer mirror tube 1 are connected by glue.
  • An endoscope system described in the present invention includes an external mirror tube 1, an objective lens group 2, a rod lens group 4, a main mirror body 6, an image sensor 9, a camera system housing 10, and a matching camera.
  • the chip 14, the objective lens group 2 and the rod lens group 4 are installed together in the external mirror tube 1, the rear end of the external mirror tube 1 is connected to the main mirror body 6, the main mirror body 6 is provided with a power supply interface 15, and the rear end of the main mirror body 6 is connected
  • the camera system housing 10 , the image sensor 9 and the matching photographic objective lens group 13 are installed in the camera system housing 10 , and the inner installation wire of the power supply interface 15 extends from the main mirror body 6 and the outer mirror tube 1 to the area of the light-emitting chip 14 , the wires are electrically connected with the light-emitting chip 14 to transmit power for the light-emitting chip 14 .
  • the number of the light-emitting chips 14 is determined by
  • the main lens body 6 is made of a one-time die-casting molding material, and all the lenses constituting the objective lens group 2, the rod lens group 4 and the matching photographic objective lens group 13 are made by a molding process.
  • the material of the external mirror tube 1 is medical stainless steel.
  • the material of the main mirror body 6 is medical polymer plastic.
  • the material of the objective lens group 2, the rod lens group 4 and the matching photographic objective lens group 13 is optical glass or optical plastic.
  • the rod lens group 4 may include a plurality of rod lenses arranged in sequence, and the length (dimension in the axial direction of the mirror tube) of each rod lens may be greater than its radial dimension.
  • the role of the rod lens group is mainly to transmit the image light without magnifying the image.
  • the outer mirror tube 1 and the main mirror body 6 are connected by gluing.
  • the main mirror body 6 is connected with the camera system housing 10 in a screw-fastening manner.
  • the main mirror body 6 is connected with the camera system housing 10 in a manner of fastening and snapping.

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  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
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  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)

Abstract

一种内窥镜系统（30），其包括硬性内窥镜（31）和摄像系统（32）；硬性内窥镜（31）包括外部镜管（1）和连接壳体（6）；摄像系统（32）包括照相物镜组（13）和图像传感器（9）；外部镜管（1）包括第一端（1A）和第二端（1B），连接壳体（6）与外部镜管（1）的第二端（1B）直接相连，照相物镜组（13）设置在连接壳体（6）远离外部镜管（1）的一侧，图像传感器（9）设置在照相物镜组（13）远离连接壳体（6）的一侧，摄像系统（32）与连接壳体（6）可拆卸连接，照相物镜组（13）被配置为直接对硬性内窥镜（31）传递的图像进行放大成像，图像传感器（9）被配置为将放大后图像转换为电信号。内窥镜系统（30）通过对硬性内窥镜（31）与摄像系统（32）成像光路的协同设计，移除了硬性内窥镜（31）中的目镜组（7）及配套的眼罩（16）、连接口（11）等机械结构，有效降低了加工及装配成本，因而提高了仪器的性价比，充分展现了硬性内窥镜（31）的特有优势。

Description

内窥镜系统
本申请要求于2020年12月2日递交的中国专利申请202011385460.2号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开实施例涉及一种内窥镜系统。
背景技术
内窥镜作为医用光学仪器已经有两百多年的历史，已经从初期阶段由光学透镜构成的经典硬性内窥镜，逐渐发展成为融合现代技术的新式内窥镜，如纤维内镜、电子内镜、胶囊内镜和超声内镜等。
发明内容
本公开实施例提供一种内窥镜系统，其包括硬性内窥镜和摄像系统；硬性内窥镜包括外部镜管和连接壳体；摄像系统包括照相物镜组和图像传感器；外部镜管包括第一端和第二端，连接壳体与外部镜管的第二端直接相连，照相物镜组设置在连接壳体远离外部镜管的一侧，图像传感器设置在照相物镜组远离连接壳体的一侧，摄像系统与连接壳体可拆卸连接，照相物镜组被配置为直接对硬性内窥镜传递的图像进行放大成像，图像传感器被配置为将放大后图像转换为电信号。该内窥镜系统通过对硬性内窥镜与电子摄像系统成像光路的协同设计，移除了硬性内窥镜光路中的目镜组及配套的眼罩、连接口等机械结构，将照相物镜汇聚目镜组出射光束的成像方式，调整为放大物镜对棒镜组的中继图像进行二次放大的成像方式。以精简优化成像光路的方式，有效降低了加工及装配成本，因而提高了仪器的性价比，充分展现了硬性内窥镜的特有优势。
本公开至少一个实施例提供一种内窥镜系统，其包括硬性内窥镜，包括外部镜管和连接壳体；以及摄像系统，包括照相物镜组和图像传感器；其中，所述外部镜管包括第一端和第二端，所述连接壳体与所述外部镜管的所述第二端直接相连，所述照相物镜组设置在所述连接壳体远离所述外部镜管的一侧，所述图像传感器设置在所述照相物镜组远离所述连接壳体的一侧，所述摄像系统与所述连接壳体可拆卸连接，所述照相物镜组被配置为直接对所述硬性内窥镜 传递的图像进行放大成像，所述图像传感器被配置为将放大后的图像转换为电信号。
例如，在本公开一实施例提供的一种内窥镜系统中，所述照相物镜组的放大倍数的范围为100-300倍。
例如，在本公开一实施例提供的一种内窥镜系统中，所述连接壳体内部不设置用于放大图像的光学组件。
例如，在本公开一实施例提供的一种内窥镜系统中，所述摄像系统包括摄像系统外壳，所述照相物镜组和所述图像传感器设置在所述摄像系统外壳之中，所述摄像系统外壳与所述连接壳体可拆卸连接。
例如，在本公开一实施例提供的一种内窥镜系统中，所述照相物镜组为调焦透镜组。
例如，在本公开一实施例提供的一种内窥镜系统中，所述硬性内窥镜还包括：至少一个发光元件，位于所述外部镜管的所述第一端；物镜组，位于所述外部镜管内部，且位于所述发光元件靠近所述连接壳体的一端；以及棒镜组，位于所述外部镜管内部，且位于所述物镜组靠近所述连接壳体的一端。
例如，在本公开一实施例提供的一种内窥镜系统中，所述棒镜组部分延伸至所述连接壳体之中。
例如，在本公开一实施例提供的一种内窥镜系统中，所述连接壳体包括供电接口，所述供电接口被配置为与所述至少一个发光元件相连。
例如，在本公开一实施例提供的一种内窥镜系统中，所述连接壳体的径向尺寸大于所述外部镜管的径向尺寸。
例如，在本公开一实施例提供的一种内窥镜系统中，所述连接壳体与所述摄像系统采用螺纹连接方式相连。
例如，在本公开一实施例提供的一种内窥镜系统中，所述连接壳体与所述摄像系统采用卡扣相连。
例如，在本公开一实施例提供的一种内窥镜系统中，所述连接壳体的材料包括医用高分子塑料。
例如，在本公开一实施例提供的一种内窥镜系统中，所述外部镜管的材料包括医用不锈钢。
例如，在本公开一实施例提供的一种内窥镜系统中，所述连接壳体和所述外部镜管采用胶体相连。
附图说明
为了更清楚地说明本公开实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本公开的一些实施例，而非对本公开的限制。
图1为一种内窥镜系统的结构示意图；
图2为另一种内窥镜系统的结构示意图；
图3为本公开一实施例提供的一种内窥镜系统的结构示意图；
图4为包含目镜组的内窥镜系统的光路示意图；以及
图5为本公开一实施例提供的一种内窥镜系统的光路示意图。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本公开保护的范围。
除非另外定义，本公开使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“连接”或者“相连”等类似的词语并非限定于物理的或者机械的连接，而是可以包括电性的连接，不管是直接的还是间接的。
虽然新式内窥镜能够克服经典硬性内窥镜在某些方面存在的技术缺陷，具备较高的应用价值，但是硬性内窥镜以其像质和性价比等方面具备的独特优势，目前在临床诊疗领域仍然具有极高的应用普及率以及市场份额。为了进一步展现硬性内窥镜的独有优势，对其开展技术研发工作具有重要的意义。
目前，为了便于医师进行实时操作以及影像学分析，硬性内窥镜通常与电子摄像系统配套使用，从而构成一套完整的内窥镜系统。图1为一种内窥镜系统的结构示意图。如图1所示，该内窥镜系统30包括外部镜管1、内部镜管3、 主镜体6、导光口12、照明光纤束5、物镜组2、棒镜组4、目镜组7和眼罩16；物镜组2和棒镜组4设置在外部镜管5之内；目镜组7设置在主镜体6之内，导光口12设置在主镜体6上，并被配置为与光源相连；照明光纤束5可从导光口12延伸至外部镜管5的一端，从而可实现照明功能。该内窥镜系统30还包括电子摄像系统31，电子摄像系统31包括摄像系统外壳10和设置在摄像系统外壳10之内的照相物镜组8和图像传感器9。电子摄像系统31可通过连接口11与眼罩16相连。
图2为另一种内窥镜系统的结构示意图。如图2所示，，该内窥镜系统30包括外部镜管1、主镜体6、供电接口15、发光芯片14、物镜组2、棒镜组4、目镜组7和眼罩16；物镜组2和棒镜组4设置在外部镜管5之内；目镜组7设置在主镜体6之内，供电接口15设置在主镜体6上；发光芯片14设置在外部镜管1的一端，并可通过导线连接至供电接口15，从而可通过供电接口15向发光芯片14进行供电。该内窥镜系统30还包括电子摄像系统31，电子摄像系统31包括摄像系统外壳10和设置在摄像系统外壳10之内的照相物镜组8和图像传感器9。电子摄像系统31可通过连接口11与眼罩16相连。图2所示的内窥镜系统使用发光芯片替代了照明光线束，精简了硬性内窥镜的内部、外部双重镜管的结构，将光学元件和发光芯片统一安装于外部镜管中，并且以模压工艺制造的非球面透镜作为内窥镜的光学元件。因此，上述设计方案以扩大了光学系统口径以及采用非球面成像系统校正像差的双重物理机制提高了成像质量，以发光芯片代替光纤束以及采取模压工艺代替古典磨抛工艺制造透镜的方式降低了成本。需要说明的是，上述的内窥镜系统中的目镜组和眼罩的作用是将棒镜组传递的中继图像进行放大并成像于无穷远的位置便于人眼观察。
在研究中，本申请的发明人注意到，上述的内窥镜系统中的目镜组和眼罩的作用是将棒镜组传递的中继图像进行放大并成像于无穷远的位置便于人眼观察；然而，在实际应用的过程中，硬性内窥镜通常与电子摄像系统配套使用，几乎不存在人眼在目镜后方直接观察图像的操作环节。因此，本申请的发明人认为硬性内窥镜中的目镜组属于成像光学系统中的冗余成分，可通过对照相物镜进行优化设计，直接通过对照相物镜对中继图像进行二次放大成像，来取消掉目镜组，从而可降低硬性内窥镜的成本。另外，还可去除硬性内窥镜中与目镜组配套的眼罩和连接口等组件，从而进一步降低硬性内窥镜的成本。
本公开实施例提供一种内窥镜系统，其包括硬性内窥镜和摄像系统；硬性 内窥镜包括外部镜管和连接壳体；摄像系统包括照相物镜组和图像传感器；外部镜管包括第一端和第二端，连接壳体与外部镜管的第二端直接相连，照相物镜组设置在连接壳体远离外部镜管的一侧，图像传感器设置在照相物镜组远离连接壳体的一侧，摄像系统与连接壳体可拆卸连接，照相物镜组被配置为直接对硬性内窥镜传递的图像进行放大成像，图像传感器被配置为将放大后图像转换为电信号。该内窥镜系统通过对硬性内窥镜与摄像系统成像光路的协同设计，移除了硬性内窥镜中的目镜组及配套的眼罩、连接口等机械结构，有效降低了加工及装配成本，因而提高了仪器的性价比，充分展现了硬性内窥镜的特有优势。
下面通过具体实施方式结合附图对本发明作进一步详细说明。本申请可以以多种不同的形式来实现，并不限于本实施例描述的实施方式。
然而，本领域的技术人员可能会意识到其中的一个或多个的具体细节描述可以被省略，或者还可以采用其他的方法、组件或材料。在一些例子中，一些实施方式并没有描述或没有详细的描述。
此外，本文中记载的技术特征、技术方案还可以在一个或多个实施例中以任意合适的方式组合。
本公开一实施例提供一种内窥镜系统。图3为本公开一实施例提供的一种内窥镜系统的结构示意图。如图3所示，该内窥镜系统30包括硬性内窥镜31和摄像系统32；硬性内窥镜31包括外部镜管1和连接壳体6；摄像系统32包括照相物镜组13和图像传感器9；外部镜管1包括第一端1A和第二端1B，连接壳体6与外部镜管1的第二端1B直接相连，照相物镜组13设置在连接壳体6远离外部镜管1的一侧，图像传感器9设置在照相物镜组13远离连接壳体6的一侧，摄像系统32与连接壳体6可拆卸连接，照相物镜组13被配置为直接对硬性内窥镜31传递的图像进行放大成像，图像传感器9被配置为将放大后图像转换为电信号。
在本公开实施例提供的内窥镜系统中，摄像系统与连接壳体可拆卸连接，摄像系统与连接壳体之间不设置眼罩、连接口等组件，并且照相物镜组被配置为直接对硬性内窥镜传递的图像进行放大成像，不用再额外设置对硬性内窥镜传递的图像进行放大的目镜组。因此，该内窥镜系统至少可以省略目镜组、眼罩、连接口等组件，从而可大大降低硬性内窥镜的成本，从而可降低整个内窥镜系统的成本。需要说明的是，在该内窥镜系统的使用过程中，硬性内窥镜可 为一次性的，需要经常进行更换；因此，降低硬性内窥镜的成本可大大降低整个产品的使用成本，具有较强的产品竞争力。
在一些示例中，照相物镜组13的放大倍数的范围为100-300倍。由此，该内窥镜系统仅通过照相物镜组就可将硬性内窥镜传递的图像放大到需要的倍数，无需额外设置对硬性内窥镜传递的图像进行放大的目镜组。由此，该内窥镜系统通过对照相物镜进行优化设计调整焦距及工作距离，在直接对中继图像进行二次放大成像时，也能够实现与目镜相同的放大倍数。因此，对于当前阶段的内窥镜使用方式，照相物镜组可以完全实现目镜组的功能，从而可取消现有硬性内窥镜保留目镜组以及眼罩、连接口这些冗余成分。
在一些示例中，照相物镜组13的放大倍数的范围为180-220倍；例如照相物镜组13的放大倍数可为200倍。
在一些示例中，连接壳体6内部不设置用于放大的光学组件。
在一些示例中，如图3所示，摄像系统32包括摄像系统外壳10，照相物镜组13和图像传感器9设置在摄像系统外壳10之中，摄像系统外壳10与连接壳体6可拆卸连接。
例如，如图3所示，摄像系统外壳10直接与连接壳体6可拆卸连接，而不通过其他部件。
在一些示例中，照相物镜组13为调焦透镜组。当然，本公开实施例包括但不限于此，照相物镜组也可为定焦透镜组。
在一些示例中，如图3所示，硬性内窥镜31还包括至少一个发光元件14、物镜组2和棒镜组4；至少一个发光元件14位于外部镜管1的第一端1A；物镜组2位于外部镜管1内部，且位于发光元件14靠近连接壳体6的一端；棒镜组4位于外部镜管1内部，且位于物镜组2靠近连接壳体6的一端。
图4为一种包含目镜组的内窥镜系统的光路示意图；图5为本公开一实施例提供的内窥镜系统的光路示意图。如图4所示，待成像物体的反射光通过物镜组1和棒镜组4传递至目镜组7，待成像物体的图像被目镜组7放大之后，经过照相物镜组8再次进行放大调焦后在图像传感器9上被转换为电信号。如图5所示，待成像物体的反射光通过物镜组1和棒镜组4直接传递至照相物镜组13，待成像物体的图像直接经过照相物镜组13进行放大调焦后在图像传感器9上被转换为电信号。可见，图5所示的照相物镜组13所起到的作用相当于图4所示的目镜组7和照相物镜组8两者共同的作用。
在一些示例中，如图3所示，棒镜组4部分延伸至连接壳体6之中，以更好地与照相物镜组13耦合。
在一些示例中，如图3所示，连接壳体6包括供电接口15，供电接口15被配置为与至少一个发光元件14相连。
在一些示例中，如图3所示，连接壳体6的径向尺寸大于外部镜管1的径向尺寸。
在一些示例中，连接壳体6与摄像系统32(例如摄像系统外壳10)采用螺纹连接方式相连。
在一些示例中，连接壳体6与摄像系统32(例如摄像系统外壳10)采用卡扣相连。当然，本公开实施例包括但不限于此，连接壳体与摄像系统也可采用其他可拆卸的方式相连。
在一些示例中，连接壳体6的材料包括医用高分子塑料。当然，本公开实施例包括但不限于此，连接壳体的材料也可为合适的材料。
在一些示例中，外部镜管1的材料包括医用不锈钢。
在一些示例中，连接壳体6和外部镜管1采用胶体相连。
本发明所描述的一种内窥镜系统，如附图3所示，包括外部镜管1、物镜组2、棒镜组4、主镜体6、图像传感器9、摄像系统外壳10、配套照相物镜组13，发光芯片14、供电接口15；发光芯片14安装于外部镜管1的前端，物镜组2设置在发光芯片14的后端，棒镜组4设置在物镜组2的后端，发光芯片14、物镜组2和棒镜组4共同安装于外部镜管1之中，外部镜管1的后端连接主镜体6，主镜体6设置供电接口15，主镜体6后端连接摄像系统外壳10，图像传感器9和配套照相物镜组13安装于摄像系统外壳10之中，供电接口15的内部安装导线，从主镜体6以及外部镜管1之内延伸至发光芯片14的区域，导线与发光芯片14进行电气连接，为发光芯片14传输电能，发光芯片14的数目由实际应用需求确定，至少为1颗。需要说明的是，上述的主镜体6即为上述的连接壳体6。
主镜体6采用一次性压铸成型材料制作，构成物镜组2、棒镜组4以及配套照相物镜组13的全部透镜采用模压工艺制作。
较佳的，外部镜管1的材质为医用不锈钢。
较佳的，主镜体6的材质为医用高分子塑料。
较佳的，物镜组2、棒镜组4以及配套照相物镜组13的材质为光学玻璃或 光学塑料。
例如，棒镜组4可以包括依次排列的多个棒镜，每个棒镜的长度(沿镜管的轴向方向的尺寸)可以大于其径向尺寸。例如，棒镜组的作用主要是传输图像光，而不会对图像进行放大。
较佳的，外部镜管1和主镜体6的以胶合方式连接。
较佳的，主镜体6与摄像系统外壳10以紧固螺旋的方式连接。
较佳的，主镜体6与摄像系统外壳10以紧固卡扣的方式连接。
综上，以上仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
有以下几点需要说明：
(1)本公开实施例附图中，只涉及到与本公开实施例涉及到的结构，其他结构可参考通常设计。
(2)在不冲突的情况下，本公开同一实施例及不同实施例中的特征可以相互组合。
以上，仅为本公开的具体实施方式，但本公开的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本公开揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本公开的保护范围之内。因此，本公开的保护范围应以权利要求的保护范围为准。

Claims (14)

  1. 一种内窥镜系统，包括：
    硬性内窥镜，包括外部镜管和连接壳体；以及
    摄像系统，包括照相物镜组和图像传感器；其中，所述外部镜管包括第一端和第二端，所述连接壳体与所述外部镜管的所述第二端直接相连，所述照相物镜组设置在所述连接壳体远离所述外部镜管的一侧，所述图像传感器设置在所述照相物镜组远离所述连接壳体的一侧，
    所述摄像系统与所述连接壳体可拆卸连接，所述照相物镜组被配置为直接对所述硬性内窥镜传递的图像进行放大成像，所述图像传感器被配置为将放大后的图像转换为电信号。
  2. 根据权利要求1所述的内窥镜系统，其中，所述照相物镜组的放大倍数的范围为100-300倍。
  3. 根据权利要求1所述的内窥镜系统，其中，所述连接壳体内部不设置用于放大图像的光学组件。
  4. 根据权利要求1-3中任一项所述内窥镜系统，其中，所述摄像系统包括摄像系统外壳，所述照相物镜组和所述图像传感器设置在所述摄像系统外壳之中，所述摄像系统外壳与所述连接壳体可拆卸连接。
  5. 根据权利要求1-3中任一项所述的内窥镜系统，其中，所述照相物镜组为调焦透镜组。
  6. 根据权利要求1-3中任一项所述的内窥镜系统，其中，所述硬性内窥镜还包括：
    至少一个发光元件，位于所述外部镜管的所述第一端；
    物镜组，位于所述外部镜管内部，且位于所述发光元件靠近所述连接壳体的一端；以及
    棒镜组，位于所述外部镜管内部，且位于所述物镜组靠近所述连接壳体的一端。
  7. 根据权利要求6所述的内窥镜系统，其中，所述棒镜组部分延伸至所述连接壳体之中。
  8. 根据权利要求6任一项所述的内窥镜系统，其中，所述连接壳体包括供电接口，所述供电接口被配置为与所述至少一个发光元件相连。
  9. 根据权利要求1-3中任一项所述的内窥镜系统，其中，所述连接壳体的径向尺寸大于所述外部镜管的径向尺寸。
  10. 根据权利要求1-3中任一项所述的内窥镜系统，其中，所述连接壳体与所述摄像系统采用螺纹连接方式相连。
  11. 根据权利要求1-3中任一项所述的内窥镜系统，其中，所述连接壳体与所述摄像系统采用卡扣相连。
  12. 根据权利要求1-3中任一项所述的内窥镜系统，其中，所述连接壳体的材料包括医用高分子塑料。
  13. 根据权利要求1-3中任一项所述的内窥镜系统，其中，所述外部镜管的材料包括医用不锈钢。
  14. 根据权利要求1-3中任一项所述的内窥镜系统，其中，所述连接壳体和所述外部镜管采用胶体相连。
PCT/CN2021/134814 2020-12-02 2021-12-01 内窥镜系统 WO2022117000A1 (zh)

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