CN115844311A

CN115844311A - Medical endoscope camera and endoscope fluorescence imaging system

Info

Publication number: CN115844311A
Application number: CN202111549982.6A
Authority: CN
Inventors: 刘闯; 王龙; 胡莲; 石强勇
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2021-09-24
Filing date: 2021-12-17
Publication date: 2023-03-28
Also published as: CN115886687A; WO2023045146A1

Abstract

A medical endoscope camera comprises an optical lens group, a lens base, a first sensor plate, a second sensor plate, an image signal processing plate and a shell; the components are all arranged in the shell; the medical endoscope camera comprises an endoscope base, an optical lens group, a first sensor plate, a second sensor plate and a board card support, wherein the optical lens group is arranged in the endoscope base and used for acquiring image light transmitted by an endoscope, the first sensor plate is provided with a first image sensor and used for acquiring optical signals of a first type and converting the optical signals of the first type into first electric signals, the second sensor plate is provided with a second image sensor and used for acquiring optical signals of a second type and converting the optical signals of the second type into second electric signals, the image signal processing plate is provided with an image signal processing chip and used for processing the electric signals to obtain the image signals, the sensor plate can be directly arranged or arranged on the endoscope base through a switching piece, the medical endoscope camera further comprises the board card support, the image signal processing plate is arranged on the board card support, and one end of the board card support is arranged on the endoscope base.

Description

Medical endoscope camera and endoscope fluorescence imaging system

Technical Field

The invention relates to the field of medical endoscopes, in particular to a medical endoscope camera and an endoscope fluorescence imaging system.

Background

The medical endoscope camera is used for acquiring optical signals transmitted by an endoscope, converting the optical signals into electric signals through an internal image sensor, and outputting the electric signals after processing the electric signals through an image processor. At present, in order to improve the holding feeling of an endoscope camera and solve the client complaints, manufacturers tend to adopt a design of reducing the size of the camera, so that the size of the camera is smaller and smaller, and the space allowing the layout of board cards inside the camera is also smaller and smaller.

For example, US10980408B2 discloses a medical camera and a medical imaging apparatus, and referring to fig. 2, a signal processing element is connected with an electronic element and fixed at a rear end portion of the camera, and an imaging element is fixed at a front end portion of the camera. The front end and the rear end of the camera are not integrated, when the camera is assembled and disassembled, the imaging element moves along with the front end part, and the signal processing element and the electronic element move along with the rear end part. The split camera designed in this way can enable the soft board connecting the imaging element and the electronic element to reach a certain length, so that the size of the camera cannot be reduced. Due to the split design, the parts of the imaging element and the electronic element which are respectively connected with the soft board may generate displacement, so that the soft and hard connection parts generate stress, and data transmission is influenced.

Summary of the invention (technical problem, technical solution, beneficial effects)

The application provides a medical endoscope camera has solved the camera because of inside integrated circuit board overall arrangement is difficult to miniaturized problem.

In one embodiment of the present application, a medical endoscope camera includes an optical lens group, a lens holder, a first sensor plate, a second sensor plate, an image signal processing plate, and a housing; the optical lens group, the lens base, the first sensor plate, the second sensor plate and the image signal processing plate are all arranged inside the shell; the optical lens group is arranged in the lens base and used for acquiring image light transmitted by the endoscope; the image light includes at least a first kind of light signal and a second kind of light signal; the first sensor board is directly provided with or fixed with a first image sensor through a switching piece and used for acquiring the first kind of optical signals and converting the first kind of optical signals into first electric signals; a second image sensor is directly arranged on the second sensor board or fixed on the second sensor board through a switching piece and used for acquiring the second type of optical signals and converting the second type of optical signals into second electric signals; the image signal processing board is provided with an image signal processing chip, and the image signal processing chip is used for processing the first electric signal and the second electric signal to obtain an image signal; the first sensor plate and the second sensor plate are arranged on the mirror base; the medical endoscope camera further comprises a board card support, the image signal processing board is arranged on the board card support, and one end of the board card support is arranged on the microscope base.

In one embodiment, the optical lens group includes a common optical path lens group and a split optical path lens group, the lens holder includes a common optical path lens holder and a split optical path lens holder, one end of the common optical path lens holder is connected with one end of the split optical path lens holder, the common optical path lens group is disposed on the common optical path lens holder, and the split optical path lens group is disposed on the split optical path lens holder.

In one embodiment, the power supply board is arranged on the board card support.

In one embodiment, the power board and the image signal processing board are electrically connected through a flexible circuit board, or the power board and the image signal processing board are integrated boards.

In one embodiment, the first sensor board, the power board and the image signal processing board are sequentially and longitudinally arranged along the length direction of the endoscope camera.

In one embodiment, the first sensor board, the power board and the image signal processing board are sequentially arranged in parallel and longitudinally along the length direction of the endoscope camera.

In one embodiment, the first sensor plate and the second sensor plate are arranged at an angle.

In one embodiment, the first sensor board and the second sensor board are arranged at a 90 degree angle.

In one embodiment, the first image sensor is a fluorescence image sensor and the second image sensor is a white light image sensor.

In one embodiment, a signal shield is further included, the signal shield being disposed between the power strip and the first sensor strip.

In one embodiment, the signal shielding case is disposed on the board card support.

In one embodiment, the image signal processing device further comprises a heat conducting pad and a heat dissipation bracket, wherein the heat conducting pad is arranged between the image signal processing board and the heat dissipation bracket and is respectively contacted with the image signal processing board and the heat dissipation bracket; the radiating bracket extends to be connected with the lens base.

In one embodiment, the first sensor board and the second sensor board are electrically connected to the image signal processing board through flexible connecting lines, respectively, so as to transmit the first electrical signal and the second electrical signal, respectively.

In one embodiment, the flexible connection line comprises a coaxial line.

In one embodiment, the image signal processing device further comprises a signal output connection board electrically connected to the image signal processing board to acquire the image signal from the image signal processing chip and output the image signal.

In one embodiment, the board holder connects the image signal processing board and the first sensor board to the lens holder, so that the board holder, the image signal processing board, the first sensor board, the second sensor board and the lens holder constitute an integral component which can be integrally disassembled and assembled. In another embodiment, the assembling step of the medical endoscope camera comprises: assembling the board card support, the image signal processing board, the first sensor board, the second sensor board and the lens base to obtain the integral component; assembling the integral component into the housing to obtain the endoscope camera.

In one embodiment, the medical endoscope camera comprises an optical lens group, a lens base, a first sensor plate, a second sensor plate, an image signal processing plate and a shell; the optical lens group, the lens base, the first sensor plate, the second sensor plate and the image signal processing plate are all arranged inside the shell; the optical lens group is arranged in the lens base and used for acquiring image light transmitted by the endoscope; the image light includes at least a first kind of light signal and a second kind of light signal; the first sensor board is directly provided with or fixed with a first image sensor through a switching piece and used for acquiring the first kind of optical signals and converting the first kind of optical signals into first electric signals; a second image sensor is directly arranged on the second sensor board or fixed on the second sensor board through a switching piece and used for acquiring the second type of optical signals and converting the second type of optical signals into second electrical signals; the image signal processing board is provided with an image signal processing chip, and the image signal processing chip is used for processing the first electric signal and the second electric signal to obtain an image signal; the first sensor plate and the second sensor plate are arranged on the mirror base; the medical endoscope camera further comprises a board card support, the image signal processing board is arranged on the board card support, and one end of the board card support is arranged on the shell. According to the medical endoscope camera and the medical endoscope camera system, the board card support is additionally arranged on the medical endoscope camera system, and the image signal processing board is arranged on the shell through the board card support, so that the image signal processing board and the shell form an integral part, the internal layout of the medical endoscope is more compact, and the size can be effectively reduced.

In an embodiment, the board holder connects the image signal processing board and the first sensor board to the housing, so that the board holder, the image signal processing board, the first sensor board, the second sensor board and the housing form an integral component which can be integrally assembled and disassembled, thereby effectively reducing the volume of the endoscope camera.

In one embodiment, the fluorescence endoscope imaging system comprises a light source, a light guide beam, a medical endoscope, a cable, a camera host and the medical endoscope camera, wherein the light source is connected with the medical endoscope through the light guide beam, one end of the medical endoscope camera is connected with the medical endoscope, and the other end of the medical endoscope camera is connected with the camera host through the cable.

Description of the drawings:

FIG. 1 is a schematic diagram of an endoscopic camera system according to an embodiment;

FIG. 2 is a schematic view of a medical endoscope camera according to an embodiment;

FIG. 3 is a schematic view of a medical endoscope camera according to an embodiment;

FIG. 4 is a schematic view of a medical endoscope camera according to an embodiment;

FIG. 5 is a schematic diagram of a power board and an image signal processing board according to an embodiment;

FIG. 6 is a schematic view of a medical endoscope camera according to an embodiment;

FIG. 7 is a schematic view of a medical endoscope camera according to an embodiment;

in the figure, 1-lens holder, 11-common optical path lens holder, 12-split optical path lens holder, 2-sensor board, 21-second sensor board, 22-first sensor board, 3-signal shield, 4-power board, 5-board card support, 6-image signal processing board, 7-image signal processing chip, 8-heat conduction pad, 9-heat dissipation support, 13-signal output connection board, 14-flexible circuit board, 15-optical lens group, 151-common optical path lens group, 152-split optical path lens group, 16-shell, 10-light source, 20-light guide beam, 30-endoscope, 40-endoscope camera, 50-camera host, 60-display, 71-cable, 72-video connection line, 100-part to be observed, 1000-endoscope camera system.

The specific implementation mode is as follows:

the present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

As shown in fig. 1, an endoscopic fluorescence imaging system 1000 provided in the embodiment of the present application includes a light source 10, a light guide bundle 20, an endoscope 30, an endoscope camera 40, a cable 71, a camera host 50, a display 60, and a video connection line 72. The endoscope 30 includes an illumination optical path interfacing with the light guide 20 for irradiating light transmitted from the light source 10 to a specific portion of the inspection object, and an imaging optical path interfacing with the endoscope camera 40 to acquire an optical signal reflected or excited by the specific portion of the inspection object and transmit to the endoscope camera 40.

The camera main unit 50 is connected with the endoscope camera 40 through a cable 71, and the white light signal and the fluorescence signal generated by the endoscope camera 40 are transmitted to the camera main unit 50 through the cable 71 for processing. In certain embodiments, cable 71 may be an optical communication cable, such as an optical fiber; the endoscope camera 40 converts an image signal (electrical signal) into an optical signal, and transmits the optical signal to the main camera 50 via the cable 71, and the main camera 50 converts the optical signal into an electrical signal (image signal). The camera host 50 is connected to the display 60 via a video connection line 72, and transmits the image signal to the display 60 for display.

In some embodiments, the endoscope camera head 40 may also transmit image signals to the camera host 50 by wireless transmission.

It should be understood by those skilled in the art that fig. 1 is merely an example of an endoscopic camera system 1000 and does not constitute a limitation of the endoscopic camera system 1000, and that the endoscopic camera system 1000 may include more or less components than shown in fig. 1, or some components in combination, or different components.

In an embodiment, the light source 10 is used to provide an illumination source and to excite fluorescence imaging to the site to be observed 100. The light source 10 includes a white light source (visible light source) and an excitation light source (laser illumination light source, for example, near infrared light) corresponding to a fluorescent reagent.

In one embodiment, the camera host 50 is provided with a processor, the processor is connected with the endoscope camera 40 through a cable 71, and the processor acquires an image signal output by the camera and processes the image signal to output a white light image or a fluorescence image of the observed tissue. The acquired image signal may be a single white light signal and a fluorescence signal, or an image signal combining the white light signal and the fluorescence signal.

The embodiment of the application also provides a medical endoscope camera which can be applied to the endoscope fluorescence imaging system provided by any one of the embodiments.

As shown in fig. 2 and 3, the medical endoscope camera head includes an optical lens group 15, a lens holder 1, a first sensor plate 22, a second sensor plate 21, an image signal processing plate 6, and a housing 16; the optical lens group 15, the lens holder 1, the first sensor plate 22, the second sensor plate 21 and the image signal processing plate 6 are all arranged inside the shell 16; the optical lens group 15 is arranged in the lens base 1 and used for acquiring image light transmitted by the endoscope; the image light includes at least a first kind of light signal and a second kind of light signal; the first sensor board 22 is provided with a first image sensor for acquiring a first kind of optical signal and converting the first kind of optical signal into a first electrical signal; the second sensor board 21 is provided with a second image sensor for acquiring a second kind of optical signal and converting the second kind of optical signal into a second electrical signal; the image signal processing board 6 is provided with an image signal processing chip 7, and the image signal processing chip 7 is used for processing the first electric signal and the second electric signal to obtain an image signal; a first sensor plate 22 and a second sensor plate 21 are arranged on the mirror base 1.

As shown in fig. 3, in the medical endoscope camera provided by the embodiment, a board card support 5 is added, an image signal processing board 6 is arranged on the board card support 5, and one end of the board card support 5 is arranged on the lens holder 1 at the front end, so that the image signal processing board 6 and the front end assembly form an integral component, the internal layout of the medical endoscope is more compact, and the volume can be effectively reduced. Specifically, the front end module may include the optical lens group 15, the first sensor plate 22, the second sensor plate 21, the mirror base 1, and the like as shown in fig. 2.

With reference to fig. 2 and fig. 3, in an embodiment, the optical lens assembly 15 includes a common optical path lens assembly 151 and a split optical path lens assembly 152, the lens holder 1 includes a common optical path lens holder 11 and a split optical path lens holder 12, one end of the common optical path lens holder 11 is connected to one end of the split optical path lens holder 12, the common optical path lens assembly 151 is disposed on the common optical path lens holder 11, and the split optical path lens assembly 152 is disposed on the split optical path lens holder 12. The particular medical videoscopic camera head also includes a housing 16, and the various components described above are disposed within the housing 16.

The common optical path lens group 151 and the spectroscopic optical path lens group 152 may respectively include a plurality of optical lenses, and the common optical path lens group 151 is configured to acquire image light transmitted from the endoscope and transmit the image light to the spectroscopic optical path lens group 152. In one embodiment, the image light captured by the common optical path lens set 151 includes mixed white light and fluorescence. The split optical path lens group 152 is configured to obtain the image light transmitted by the common optical path lens group 151, and then separate the white light from the fluorescence, for example, transmit the white light to a first image sensor on the first sensor plate 22, and transmit the fluorescence to a second image sensor on the second sensor plate 21; alternatively, the fluorescence is transmitted to the first image sensor on the first sensor board 22, and the white light is transmitted to the second image sensor on the second sensor board 21. In one embodiment, the beam splitting optical path assembly 152 includes at least one beam splitter for separating the mixed white light and the fluorescence. For example, the beam splitter is a dichroic beam splitter.

As shown in fig. 3, in an embodiment, the medical endoscope camera further includes a power board 4, and the power board 4 is disposed on the board support 5. In this embodiment, since the power board 4 and the image signal processing board 6 are both disposed on the board support 5, so that the power board 4, the image signal processing board 6 and the front end assembly form an integral component, and the internal layout of the medical endoscope is more compact, and the volume can be effectively reduced, for example, as disclosed in patent US10980408B2, the signal processing element and the electronic element are fixed at the rear end of the camera, and the pixel element is fixed at the front end of the camera, when the camera is assembled and disassembled, the parts of the imaging element and the electronic element respectively connected with the soft board may be displaced, and the joints of the soft board respectively connected with the imaging element and the electronic element generate stress. In the embodiment, the power panel 4, the image signal processing board 6 and the front end component form an integral component by using the board card support 5, so that the phenomenon that the internal board card displaces is avoided, and the accuracy and the stability of signal transmission are improved.

As shown in fig. 5, in an embodiment, the power board 4 and the image signal processing board 6 are electrically connected through the flexible circuit board 14, or the power board 4 and the image signal processing board 6 are integrated boards.

As shown in fig. 2, in an embodiment, the first sensor board 22, the power board 4, and the image signal processing board 6 are sequentially and longitudinally arranged along the length direction of the endoscope camera. In another embodiment, the first sensor board 22, the power board 4 and the image signal processing board 6 are sequentially arranged in parallel and longitudinally along the length direction of the endoscope camera. It should be noted that the term "parallel" in the present embodiment includes a strict parallel, and also includes a case where the first sensor board 22, the power supply board 4, and the image signal processing board 6 have a certain angle due to a process error.

In one embodiment, the first sensor board 22 and the second sensor board 21 are disposed at an angle, so that the first sensor and the second sensor respectively acquire two kinds of transmitted optical signals, so as to simultaneously receive the two kinds of optical signals. Specifically, when the optical lens assembly 15 includes the common optical path lens assembly 151 and the split optical path lens assembly 152, the first sensor plate 22 and the second sensor plate 21 are disposed at an angle, so that the first sensor and the second sensor respectively obtain the white light and the fluorescence after the split optical path.

In one embodiment, the first sensor plate 22 and the second sensor plate 21 are arranged at a 90 degree angle therebetween. It should be noted that the "90 degrees" in the present embodiment includes 90 degrees in a strict sense, and also includes a case where the first sensor board 22 and the second sensor board 21 do not strictly satisfy the 90 degree setting due to a process error or a need to receive two kinds of optical signals.

In one embodiment, the first image sensor is a fluorescence image sensor and the second image sensor is a white light image sensor. Correspondingly, the first type of optical signal is a fluorescence signal, and the second type of optical signal is a white light signal.

In another embodiment, the first image sensor is a white light image sensor and the second image sensor is a fluorescence image sensor. Correspondingly, the first kind of optical signal is a white light signal, and the second kind of optical signal is a fluorescence signal.

In one embodiment, the medical endoscope camera comprises a signal shielding case 3, and the signal shielding case 3 is arranged between the power supply board 4 and the first sensor board 22. In this embodiment, increase signal shield 3 and can prevent effectively that power strip 4 from causing the influence to the first sensor on the first sensor board 22, guarantee the stable performance of this medical endoscope camera, the clear accuracy of formation of image.

In one embodiment, the signal shielding 3 is disposed on the board holder 5. In this embodiment, the signal shielding case 3, the image signal processing board 6 and the power board 4 are all arranged on the board card support 5, so that the signal shielding case 3, the image signal processing board 6 and the power board 4 form an integral part with the front end component through the board card support 5, the internal layout of the medical endoscope is more compact, and the volume can be effectively reduced.

In one embodiment, the medical endoscope camera comprises a heat conducting pad 8 and a heat radiating bracket 9. The heat conduction pad 8 is disposed between the image signal processing board 6 and the heat dissipation bracket 9, and is in contact with the image signal processing board 6 and the heat dissipation bracket 9, respectively, and as shown in fig. 2, the heat dissipation bracket 9 extends to be connected with the mirror base 1. Because image signal processing board 6 is one of the inside main devices that generate heat of camera, can lead microscope base 1 through heat conduction pad 8 and heat dissipation support 9 with the heat that image signal processing board 6 produced, be about to the heat that image signal processing board 6 produced leads the camera front end, avoids the heat focus to grip the position at the camera to comfort level when having promoted the user and holding.

In an embodiment, the first sensor board 22 and the second sensor board 21 are electrically connected to the image signal processing board 6 through flexible connection lines, respectively, so as to transmit the image signals acquired by the first sensor and the second sensor to the image signal processing chip 6 on the image signal processing board 6 for processing. The flexible connecting line described in this embodiment includes very thin coaxial lines. As in the camera disclosed in patent US10980408B2, the imaging element and the electronic element are rigidly connected to the flexible board, which results in stress at the joint when relative translation occurs between the rigid boards, which affects signal transmission between the boards, and in this embodiment, the first sensor board 22 and the second sensor board 21 are respectively connected to the image signal processing board 6 by using flexible connecting wires. Therefore, stress can be effectively avoided, signal stability and accuracy are guaranteed, and the two photosensitive plates can be independently placed in the connection mode without mutual interference. In addition, in the embodiment of the present application, since the image signal processing board 6 is formed as an integral component with the first sensor board 22 and the second sensor board 21 by the board holder 5, the displacement between the image signal processing board 6 and the first sensor board 22 and the second sensor board 21 is further avoided. In one embodiment, the board holder 5 connects the image signal processing board 6 and the first sensor board 22 to the mirror base 1, so that the board holder 5, the image signal processing board 6, the first sensor board 22, the second sensor board 21 and the mirror base 1 constitute an integral component which can be integrally detached. In another embodiment, the step of assembling a camera head of a medical endoscope comprises: the board holder 5, the image signal processing board 6, the first sensor board 22, the second sensor board 21, and the lens holder 1 are assembled into an integral component, and the integral component is assembled into the housing 16 to obtain an endoscope camera.

In one embodiment, the medical endoscope camera includes a signal output connection board 13, and the connection board 13 is electrically connected to the image signal processing board 6 to acquire the image signal from the image signal processing board 6 and output the image signal. For example, the image signal processing board 6 transmits the processed image signal to the host computer 50 through the signal output connection board 13 and the transmission cable 71.

As shown in fig. 7, in one embodiment, the medical endoscope camera head includes an optical lens group 15, a lens holder 1, a first sensor plate 22, a second sensor plate 21, an image signal processing plate 6, and a housing 16; the optical lens group 15, the lens holder 1, the first sensor plate 22, the second sensor plate 21 and the image signal processing plate 6 are all arranged inside the shell 16; the optical lens group 15 is arranged in the lens base 1 and used for acquiring image light transmitted by the endoscope; the image light includes at least a first kind of light signal and a second kind of light signal; the first sensor board 22 is provided with a first image sensor for acquiring a first kind of optical signal and converting the first kind of optical signal into a first electrical signal; the second sensor board 21 is provided with a second image sensor for acquiring a second kind of optical signal and converting the second kind of optical signal into a second electrical signal; the image signal processing board 6 is provided with an image signal processing chip 7, and the image signal processing chip 7 is used for processing the first electric signal and the second electric signal to obtain an image signal; a first sensor board 22 and a second sensor board 21 are provided on the housing 16.

In one embodiment, the board holder 5 connects the image signal processing board 6 and the first sensor board 22 to the housing 16, so that the board holder 5, the image signal processing board 6, the first sensor board 22, the second sensor board 21 and the housing 16 constitute an integral unit that can be integrally detached.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.

Claims

1. The medical endoscope camera is characterized by comprising an optical lens group (15), a lens base (1), a first sensor plate (22), a second sensor plate (21), an image signal processing plate (6) and a shell (16); the optical lens group (15), the lens holder (1), the first sensor plate (22), the second sensor plate (21) and the image signal processing plate (6) are all arranged inside the housing (16); the optical lens group (15) is arranged in the lens base (1) and is used for acquiring image light transmitted by an endoscope; the image light includes at least a first kind of light signal and a second kind of light signal; the first sensor board (22) is provided with a first image sensor for acquiring the first kind of optical signals and converting the first kind of optical signals into first electric signals; the second sensor board (21) is provided with a second image sensor for acquiring the second kind of optical signals and converting the second kind of optical signals into second electric signals; an image signal processing chip (7) is arranged on the image signal processing board (6), and the image signal processing chip (7) is used for processing the first electric signal and the second electric signal to obtain an image signal; the first sensor plate (22) and the second sensor plate (21) are arranged on the mirror base (1); the medical endoscope camera further comprises a board card support (5), the image signal processing board (6) is arranged on the board card support (5), and one end of the board card support (5) is arranged on the microscope base (1).

2. The medical endoscope camera according to claim 1, characterized in that the optical lens group (15) includes a common optical path lens group (151) and a split optical path lens group (152), the lens holder (1) includes a common optical path lens holder (11) and a split optical path lens holder (12), one end of the common optical path lens holder (11) is connected with one end of the split optical path lens holder (12), the common optical path lens group (151) is disposed on the common optical path lens holder (11), and the split optical path lens group (152) is disposed on the split optical path lens holder (12).

3. The medical endoscope camera according to claim 1, characterized by further comprising a power supply board (4), the power supply board (4) being provided on the board holder (5).

4. The medical endoscope camera according to claim 3, characterized in that the power board (4) and the image signal processing board (6) are electrically connected by a flexible circuit board (14), or the power board (4) and the image signal processing board (6) are integrated boards.

5. The medical endoscope camera according to claim 3, characterized in that the first sensor board (22), the power board (4), the image signal processing board (6) are arranged longitudinally in sequence along the endoscope camera length direction.

6. The medical endoscope camera according to claim 5, characterized in that the first sensor board (22), the power supply board (4), and the image signal processing board (6) are arranged in parallel and longitudinally in sequence along the length direction of the endoscope camera.

7. The medical endoscope camera according to claim 1, characterized in that the first sensor plate (22) and the second sensor plate (21) are arranged at an angle.

8. The medical endoscope camera according to claim 7, characterized in that the first sensor plate (22) and the second sensor plate (21) are arranged at an angle of 90 degrees.

9. The medical endoscope camera according to claim 1, wherein said first image sensor is a fluorescence image sensor and said second image sensor is a white light image sensor.

10. The medical endoscope camera according to claim 3, characterized by further comprising a signal shield (3), the signal shield (3) being disposed between the power supply board (4) and the first sensor board (22).

11. The medical endoscope camera according to claim 10, characterized in that the signal shield (3) is arranged on the board holder (5).

12. The medical endoscope camera according to claim 1, characterized by further comprising a heat conduction pad (8) and a heat dissipation bracket (9), the heat conduction pad (8) being disposed between the image signal processing board (6) and the heat dissipation bracket (9) and being in contact with the image signal processing board (6) and the heat dissipation bracket (9), respectively; the heat dissipation support (9) extends to be connected with the mirror base (1).

13. The medical endoscope camera according to claim 1, characterized by further comprising the first sensor board (22) and the second sensor board (21) electrically connected with the image signal processing board (6) by flexible connection lines, respectively, to transmit the first electric signal and the second electric signal, respectively.

14. The medical endoscope camera head of claim 13 wherein said flexible connecting wire comprises a coaxial wire.

15. The medical endoscope camera according to claim 1, further comprising a signal output connection board (13), the signal output connection board (13) being electrically connected to the image signal processing board (6) to acquire the image signal from the image signal processing chip (7) and output the image signal.

16. The medical endoscope camera according to claim 1, characterized in that the board holder (5) connects the image signal processing board (6) and the first sensor board (22) to the lens holder (1) so that the board holder (5), the image signal processing board (6), the first sensor board (22), the second sensor board (21) and the lens holder (1) constitute an integral part which is integrally detachable.

17. The medical videoscopic camera head of claim 16, which is assembled comprising:

assembling the board card support (5), the image signal processing board (6), the first sensor board (22), the second sensor board (21) and the lens holder (1) to obtain the integral component;

assembling the integral component into the housing (16) to obtain the endoscope camera.

18. A medical endoscope camera is characterized by comprising an optical lens group (15), a lens base (1), a first sensor plate (22), a second sensor plate (21), an image signal processing plate (6) and a shell (16); the optical lens group (15), the lens holder (1), the first sensor plate (22), the second sensor plate (21) and the image signal processing plate (6) are all arranged inside the housing (16); the optical lens group (15) is arranged in the lens base (1) and is used for acquiring image light transmitted by the endoscope; the image light includes at least a first kind of light signal and a second kind of light signal; the first sensor board (22) is provided with a first image sensor for acquiring the first kind of optical signals and converting the first kind of optical signals into first electric signals; the second sensor board (21) is provided with a second image sensor for acquiring the second kind of optical signals and converting the second kind of optical signals into second electric signals; an image signal processing chip (7) is arranged on the image signal processing board (6), and the image signal processing chip (7) is used for processing the first electric signal and the second electric signal to obtain an image signal; the first sensor plate (22) and the second sensor plate (21) are arranged on the mirror base (1); the medical endoscope camera further comprises a board card support (5), the image signal processing board (6) is arranged on the board card support (5), and one end of the board card support (5) is arranged on the shell (16).

19. The medical endoscope camera according to claim 18, characterized in that the board holder (5) connects the image signal processing board (6) and the first sensor board (22) to the housing (16) so that the board holder (5), the image signal processing board (6), the first sensor board (22), the second sensor board (21) and the housing (16) constitute an integrally detachable integral component.

20. An endoscopic fluorescence imaging system, comprising a light source (10), a light guide bundle (20), an endoscope (30), a cable (71), a camera (50) and the medical endoscope camera (40) according to any one of claims 1 to 19, wherein the light source (10) is connected with the endoscope (30) through the light guide bundle (20), one end of the medical endoscope camera (40) is connected with the endoscope (30), and the other end of the medical endoscope camera (40) is connected with the camera (50) through the cable (71).