Pathological image scanning device

Abstract

The utility model discloses a pathological image scanning device, which comprises a scanning platform, a scanning head, a grating ruler movement mechanism, a first driving device, a second driving device, a PID (Proportion Integration Differentiation) controller, an imaging system, an imaging system light source and an image acquisition device. According to the utility model, the PID controller is applied to the pathology scanning device, so that the scanning speed and position of the pathology scanning device are accurately controlled, and the scanning quality and efficiency of a pathology sample image are improved; the scanning speed and position are accurately controlled through a PID control algorithm, and errors and deviation possibly occurring in a traditional scanner are avoided; and the high-performance PID controller and the scanning head are adopted, so that the scanning speed is increased, and the diagnosis time is shortened. And a friendly user interface and an operating system are arranged, so that a user can conveniently set parameters and operate and control. And the expandability is high, and the modular design is adopted, so that function expansion and upgrading are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, especially pathological image scanning device. BACKGROUND

[0002] With the progress of medical technology and the growth of pathological diagnosis demand, pathological image scanner has become an indispensable tool in modern medical diagnosis. However, the existing pathological image scanner has problems such as slow scanning speed, poor scanning accuracy and stability in scanning speed, scanning accuracy and stability. SUMMARY

[0003] In order to solve one or more problems of slow scanning speed and poor scanning accuracy of the existing pathological image scanning device. The utility model provides a pathological image scanning device, which comprises:

[0004] The scanning platform is used for placing and fixing the pathological sample slide to be scanned, and the scanning platform can move the pathological sample slide in a preset direction to facilitate scanning the images of different positions of the pathological sample.

[0005] The scanning head is located above the scanning platform and is used for collecting the pathological sample on the slide and imaging in the imaging system.

[0006] The grating motion mechanism is fixedly connected with the scanning head and is used for monitoring the scanning speed and position of the scanning head in real time and feeding back the speed and position data of the scanning head to the PID controller.

[0007] The first driving device is connected with the scanning head and is used for driving the scanning head to move back and forth along the first direction.

[0008] The second driving device is connected with the scanning platform and is used for driving the scanning platform to move back and forth along the second direction.

[0009] The image acquisition device is arranged on the right side of the imaging system and is fixedly connected with the imaging system, and is used for scanning the image of the case sample.

[0010] Further, the grating motion mechanism comprises a driving motor, a guide rail and a position feedback grating, the driving motor is fixedly installed in parallel with the guide rail, and the position feedback grating is fixedly installed on the guide rail, so that the driving motor drives the guide rail to move the position grating.

[0011] Further, the scanning head is an achromatic parallel objective.

[0012] Preferably, the scanning head comprises a 20x achromatic parallel objective and a 40x achromatic parallel objective.

[0013] Further, an electric converter 9 is further included, which is fixedly connected with the scanning head, and is used for controlling the switching of scanning heads with different magnifications.

[0014] Preferably, the image acquisition device is a digital camera.

[0015] Preferably, the digital camera is configured with a USB3.0 high-speed data transmission interface.

[0016] Compared with the prior art, the technical scheme provided by the utility model has the following advantages and beneficial effects:

[0017] (1) The PID controller is applied to the pathological scanning device, the scanning speed and position of the case scanning device are accurately controlled, and the scanning quality and efficiency of the case sample image are improved.

[0018] (2) The scanning speed and position are accurately controlled through the PID control algorithm, and errors and deviations that may occur in the traditional scanner are avoided.

[0019] (3) The high-performance PID controller and scanning head are adopted, the scanning speed is improved, and the diagnosis time is shortened.

[0020] (4) Simple operation: equipped with a friendly user interface and operating system, facilitating parameter setting and operation control of users.

[0021] (5) Strong expandability: modular design is adopted, facilitating function expansion and upgrading. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 Fig. 2 is a right view structural schematic diagram of the case scanning device of the utility model;

[0024] Figure 2 Fig. 3 is a left view structural schematic diagram of the case scanning device of the utility model.

[0025] In the figure: 100-case scanning device; 1-scanning platform; 2-scanning head; 3-imaging system; 4-grating ruler motion mechanism; 41-driving motor; 42-guiding guide rail; 43-position feedback grating ruler; 5-PID controller; 7-image acquisition device; 8-imaging system light source; 9-electric converter. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0027] In the description of the present application, it should be noted that the terms "upper", "lower", "horizontal", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connection", "installation" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] Embodiments

[0030] As shown in Figure 1 and Figure 2 The present embodiment provides a pathological image scanning device 100, which comprises a scanning platform 1 for placing and fixing a pathological sample slide to be scanned, and the scanning platform 1 can move the pathological sample slide in a predetermined direction to facilitate scanning of images of different positions of the pathological sample.

[0031] A scanning head 2 above the scanning platform 1 is used to collect the pathological sample on the slide and image it in an imaging system 3. The scanning head 2 has multiple objective lenses to choose from, such as achromatic objective lenses, semi-complex achromatic objective lenses, complex achromatic objective lenses, flat field achromatic objective lenses, flat field complex achromatic objective lenses, monochromatic objective lenses, achromatic parallel objective lenses, etc. In the present embodiment, 20x achromatic parallel objective lenses and 40x achromatic parallel objective lenses are preferred.

[0032] The grating ruler movement mechanism 4 is fixedly connected with the scanning head 2, is used for monitoring the scanning speed and position of the scanning head 2 in real time, and feeds back the speed and position data of the scanning head 2 to the PID controller 5; the grating ruler movement mechanism 4 comprises a driving motor 41, a guide rail 42 and a position feedback grating ruler 43, the driving motor 41 is fixedly installed in parallel with the guide rail 42, and the position feedback grating ruler 43 is fixedly installed on the guide rail 42, so that the driving motor 41 drives the guide rail 42 to drive the position feedback grating ruler 43 to move.

[0033] The first driving device (not shown in the figure) is connected with the scanning head 2, and is used for driving the scanning head 2 to reciprocate along the first direction, and the first direction can be the length direction of the scanning head 2.

[0034] The second driving device (not shown in the figure) is connected with the scanning platform 1, and is used for driving the scanning platform 1 to reciprocate along the second direction, and the second direction is the front-back and left-right direction of the plane where the scanning platform is located.

[0035] The PID controller 5 is arranged below the scanning platform 1, is electrically connected with the grating ruler movement mechanism 4, receives the control instruction of the upper computer (not shown in the figure), realizes the closed-loop control of the grating ruler movement mechanism 4, adjusts the output of the first driving device and the second driving device according to the difference between the preset scanning speed and position and the actual scanning speed and position, and realizes the accurate control of the scanning head 2 and the scanning platform 1.

[0036] The imaging system 3 is arranged above the scanning platform 1, and is used for feeding back the imaging of the scanning head 2 to the optical imaging module of the image acquisition device 7.

[0037] The imaging system light source 8 is arranged between the imaging system 3 and the scanning platform 1, and is used for providing a light source for the imaging system 3.

[0038] The image acquisition device 7 is arranged on the right side of the imaging system 3, is fixedly connected with the imaging system 3, is used for scanning the image of the case sample, and the image acquisition device 7 can adopt various forms, and the embodiment preferably adopts a digital camera configured with a USB3.0 high-speed data interface.

[0039] In order to further improve the automation degree and operation convenience of the image scanning system, the pathological image scanning device 100 further comprises an electric converter 9, the electric converter 9 is fixedly connected with the scanning head 2, and is used for controlling the switching of the scanning head 2 with different magnifications.

[0040] When scanning the slide case sample, the user sets the scanning speed and position parameters on the host computer, and places the pathological sample on the scanning platform 1; the imaging system light source 8 is turned on, the scanning head 2 on the electric converter 9 is switched to the appropriate magnification, and the case sample on the slide is passed through the imaging system 3 into the image acquisition device 7, and the host computer, the PID controller 5 and the driving device are linked to move the grating ruler motion mechanism 4 to make the imaging clear.

[0041] The linkage control process of the host computer, the PID controller 5 and the driving device is as follows: the host computer sends a control instruction to the first driving device and the second driving device, the first driving device drives the scanning head 2 to reciprocate along the length direction of the scanning head 2 to move close to or away from the case sample to realize clear scanning of the case sample, and the second driving device drives the scanning platform 1 to move the slide case sample forward, backward, left and right along the plane where the scanning platform 1 is located to realize full coverage scanning of the case sample. The grating ruler motion mechanism 4 feeds back the position data of the scanning head 2 to the PID controller 5 in real time, the speed sensor of the scanning platform 1 feeds back the speed data of the scanning platform 1 to the PID controller 5 in real time, the PID controller 5 calculates the control amount according to the difference between the set parameters and the actual scanning speed and position, and feeds back the control amount to the host computer, and the host computer outputs a driving instruction to the first driving device and the second driving device, and the first driving device and the second driving device respectively adjust the movement speed and position of the scanning head 2 and the scanning platform 1 in real time until the scanning speed and position reach the set value, and clear and fast scanning of the case sample is realized.

[0042] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pathological image scanning apparatus characterized by comprising: The utility model relates to a pathological sample scanning device, including: a scanning platform for placing and fixing a pathological sample slide to be scanned, which can move the pathological sample slide in a preset direction to facilitate scanning of images of different positions of the pathological sample; a scanning head located above the scanning platform for collecting the pathological sample on the slide and imaging in an imaging system; a grating ruler motion mechanism fixedly connected with the scanning head for real-time monitoring of the scanning speed and position of the scanning head and feeding back the speed and position data to a PID controller; a first driving device connected with the scanning head for driving the scanning head to reciprocally move in a first direction; a second driving device connected with the scanning platform for driving the scanning platform to reciprocally move in a second direction; a PID controller arranged below the scanning platform and electrically connected with the grating ruler motion mechanism, which receives a control instruction from an upper computer to realize closed-loop control of the grating ruler motion mechanism and realizes accurate control of the scanning head and the scanning platform by adjusting the output of the first driving device and the second driving device according to the difference between the preset scanning speed and position and the actual scanning speed and position; an imaging system arranged above the scanning platform for feeding back the imaging of the scanning head to an optical imaging module of an image acquisition device; an imaging system light source arranged between the imaging system and the scanning platform for providing a light source for the imaging system, an image acquisition device arranged on the right side of the imaging system and fixedly connected with the imaging system for scanning the image of the case sample.

2. The pathological image scanning apparatus according to claim 1, characterized by The grating ruler motion mechanism includes a driving motor, a guide rail and a position feedback grating ruler, the driving motor is fixedly installed in parallel with the guide rail, and the position feedback grating ruler is fixedly installed on the guide rail to realize driving of the driving motor to drive the guide rail to move the position grating ruler.

3. The pathological image scanning apparatus according to claim 1, characterized by, The scanning head is an achromatic parallel objective.

4. The pathological image scanning apparatus according to claim 3, characterized by The scanning head includes a 20x achromatic parallel objective and a 40x achromatic parallel objective.

5. The pathological image scanning apparatus according to claim 4, characterized in that, It also includes an electric converter fixedly connected with the scanning head for controlling switching of scanning heads with different magnifications.

6. The pathological image scanning apparatus according to claim 5, characterized in that, The image acquisition device is a digital camera.

7. The pathological image scanning apparatus according to claim 6, characterized in that, The image acquisition device is provided with a USB3.0 high-speed data transmission interface.

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