A microcirculation imaging device with high imaging contrast

Abstract

The present invention relates to the field of medical device technology, and in particular to a microcirculation imaging device with high imaging contrast, comprising a microcirculation imaging device body and an imaging receiving assembly, wherein the imaging receiving assembly comprises a first lens barrel and a light source irradiation module installed at the end of the first lens barrel, the inner cavity of the first lens barrel is connected to the image sensor module inside the microcirculation imaging device body and a plurality of lenses are installed in the inner cavity, and the light source irradiation module comprises an annular LED light group arranged at a certain tilt angle and surrounding the light entrance of the first lens barrel. The present invention realizes that LEDs can be compactly arranged in a narrow space, realizes annular dark field illumination, and improves the illumination uniformity of the surface of the tissue to be measured, the annular LED light group can irradiate the surface of the tissue to be measured at a certain tilt angle, and most of the reflections occurring on the surface of the tissue to be measured are emitted from the other side, reducing the light directly reflected from the surface of the tissue to be measured from entering the imaging light path, thereby improving the imaging contrast.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a microcirculation imaging device with high imaging contrast. Background Art

[0002] Microcirculation refers to the blood circulation between arterioles and venules. It is the place where blood and tissue cells exchange substances. Its basic function is to achieve substance replacement, deliver nutrients to various tissue cells, and transport metabolic products. Microcirculation imaging devices can be used to observe the morphology of microvessels in microcirculation and measure the physiological parameters of microvessels, so as to understand the incidence of diseases and facilitate the prevention, diagnosis and treatment of diseases.

[0003] The main lighting methods for observing sublingual microcirculation currently include OPS (orthogonal polarization imaging) technology, fiber optic light guide technology, and lighting technology that places LEDs at the front end of the lens. Among them, the technology of placing LEDs at the front end of the lens is the mainstream trend, but due to the small size of the lens, it is difficult to place LEDs in a narrow space and the installation angle of the LED is difficult to control. When the LED is irradiated vertically, it will affect the lighting effect, resulting in bright angles at the edges of the collected images, thereby affecting the imaging contrast. Summary of the invention

[0004] The object of the present invention is to provide a microcirculation imaging device with high imaging contrast to solve one of the problems raised in the background technology. To achieve the object of the present invention, the following technical solutions are adopted:

[0005] A microcirculation imaging device with high imaging contrast comprises a microcirculation imaging device body and an imaging receiving assembly, wherein the imaging receiving assembly comprises a first lens barrel and a light source irradiation module installed at the end of the first lens barrel, the inner cavity of the first lens barrel is connected to an image sensor module inside the microcirculation imaging device body and a plurality of lenses are installed in the inner cavity, and the light source irradiation module comprises an annular LED light group arranged at a certain inclination angle and surrounding a light inlet of the first lens barrel.

[0006] A further improvement is that the annular LED lamp group includes an annular circuit board, on which a plurality of LED lamps are installed at intervals, and the light source illumination module includes an annular lamp holder which is sleeved on the end of the first lens barrel, and the annular lamp holder is provided with a mounting surface for mounting the annular circuit board, and the mounting surface is a conical structure.

[0007] A further improvement is that the annular circuit board is a flexible circuit board, and the back side of the flexible circuit board is adhered to the mounting surface so that the LED light illuminates the surface of the tissue to be tested at a certain tilt angle.

[0008] A further improvement is that the horizontal angle between the illumination optical axis of the LED lamp and the surface of the tissue to be measured is 60 degrees.

[0009] A further improvement is that a power line is connected to the annular circuit board, and the power line extends along the outer surface of the first lens barrel to the inside of the microcirculation imaging device body and is connected to the main circuit board inside the microcirculation imaging device body.

[0010] A further improvement is that the imaging receiving assembly further includes a focusing module located between the microcirculation imaging device body and the first lens barrel.

[0011] A further improvement is that the focusing module includes an adapter, one side of the adapter is connected to the main body of the microcirculation imaging device, and the other side of the adapter extends outward to form a first sleeve, the first lens barrel is connected to the side of the first sleeve, a focusing sleeve is installed on the outer surface of the first sleeve through two left and right bearings, a straight slide groove extending along the length direction of the first sleeve is provided on the wall of the first sleeve, an inclined slide groove is provided on the wall of the focusing sleeve, an inner focusing barrel is movably installed in the inner cavity of the first sleeve and a focusing lens is installed in the inner cavity of the inner focusing barrel, a sliding member is installed on the outer side of the inner focusing barrel, the sliding member passes through the straight slide groove and is inserted into the inclined slide groove, when the focusing sleeve rotates, the sliding member is driven to move in the straight slide groove through the inclined slide groove, thereby driving the inner focusing barrel to move forward and backward.

[0012] A further improvement is that the imaging receiving assembly also includes an outer lens barrel, which is sleeved outside the first lens barrel, one end of the outer lens barrel is connected to the side surface of the first sleeve, and the other end of the outer lens barrel is a closed surface.

[0013] A further improvement is that the focusing module also includes a manual focusing ring, which is sleeved on the outside of the focusing sleeve, and raised circular rings are respectively provided at the left and right ends of the outer surface of the focusing sleeve near the edge, and a circle of sealing grooves is provided on the circular surface of the raised circular rings, and a sealing rubber ring is placed in the sealing groove. The inner surface of the manual focusing ring squeezes the sealing rubber ring, and when the manual focusing ring rotates, it drives the focusing sleeve to rotate synchronously.

[0014] A further improvement is that the main body of the microcirculation imaging device includes a cylindrical shell, the outer ring surface on one side of the adapter is sleeved with an opening at one end of the cylindrical shell and a circle of first grooves is provided on the outer ring surface, and a sealing rubber ring is installed in the first groove for abutting against the inner surface of the cylindrical shell.

[0015] Beneficial effects of the present invention:

[0016] The present invention can improve the uniformity of illumination within the field of view by tilting the LED lamp at a certain angle. Since the front end space of the lens barrel of the microcirculation imaging device is very small, the present invention adopts an installation method in which a flexible circuit board with an LED lamp is pasted on the mounting surface of a conical structure, which can realize the rapid installation of the annular LED lamp group and realize the tilt angle, solving the problem that it is difficult to achieve tilted installation of LED lamps in a small space. The present invention can realize compact arrangement of LEDs in a narrow space, realize annular dark field illumination, and improve the uniformity of illumination of the surface of the tissue to be measured. The annular LED lamp group can illuminate the surface of the tissue to be measured at a certain tilt angle, and most of the reflections occurring on the surface of the tissue to be measured are emitted from the other side, reducing the light directly reflected from the surface of the tissue to be measured from entering the imaging light path, thereby improving the imaging contrast. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an appearance diagram of a microcirculation imaging device with high imaging contrast according to the present invention;

[0018] Figure 2 The invention discloses an explosion-proof device for microcirculation imaging with high imaging contrast. Figure 1 ;

[0019] Figure 3 The invention discloses an explosion-proof device for microcirculation imaging with high imaging contrast. Figure 2 ;

[0020] Figure 4 It is a structural schematic diagram of the annular lamp holder and the annular LED lamp group in the present invention;

[0021] Figure 5 is a cross-sectional view of the annular lamp holder of the present invention;

[0022] Figure 6 The invention discloses an explosion-proof device for microcirculation imaging with high imaging contrast. Figure 3 ;

[0023] Figure 7 for Figure 6 A schematic diagram of the structure enlargement in the middle;

[0024] Figure 8 An exploded diagram of the focusing module in the present invention;

[0025] Fig. 9 is a schematic diagram of the assembled focusing module structure;

[0026] Fig.10 It is a schematic diagram of the matching structure of the focusing sleeve and the manual focusing ring in the present invention;

[0027] Fig.11 It is a structural schematic diagram of the focusing sleeve in the present invention;

[0028] Fig.12 It is a schematic diagram of the structure of the outer lens barrel in the present invention;

[0029] Fig.13 This is a schematic diagram of the oblique illumination principle of the light source illumination module of the present invention.

[0030] Description of reference numerals:

[0031] 1. Microcirculation imaging device body; 2. Imaging receiving assembly; 3. First lens barrel; 4. Light source irradiation module; 5. Image sensor module; 6. Ring circuit board; 7. LED lamp; 8. Ring lamp holder; 9. Mounting surface; 10. Adapter seat; 11. First sleeve; 12. Bearing; 13. Focus sleeve; 14. Straight slide groove; 15. Inclined slide groove; 16. Inner focusing barrel; 17. Sliding part; 18. Power cord; 19. Main circuit board; 20. Wire hole; 21. First ring; 22 , second groove; 23, outer lens barrel; 24, upper lens barrel; 25, lower lens barrel; 26, glass sheet; 27, mounting plate; 28, screw hole; 29, bolt; 30, waterproof rubber ring; 31, second ring; 32, third groove; 33, mounting groove; 34, circular boss; 35, manual focus ring; 36, raised ring; 37, sealing groove; 38, sealing rubber ring; 39, cylinder shell; 40, outer ring surface; 41, first groove; 42, ring-shaped LED light group; 43, focusing lens. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0033] It should be noted that when an element is referred to as being "fixed to", "disposed on", "fixed on" or "installed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. Furthermore, when an element is considered to be "transmission-connected" to another element, the two can achieve power transmission, and its specific implementation method can be implemented using the existing technology, which will not be repeated here. When an element is perpendicular or approximately perpendicular to another element, it means that the ideal state of the two is vertical, but due to the influence of manufacturing and assembly, there may be a certain vertical error. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only and do not represent the only implementation method.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0035] The “first” and “second” involved in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0036] Please refer to the attached Figure 1 -Attached Fig.12 An embodiment of the present invention provides a microcirculation imaging device with high imaging contrast, comprising a microcirculation imaging device body 1 and an imaging receiving component 2, wherein the imaging receiving component 2 comprises a first lens barrel 3 and a light source irradiation module 4 installed at the end of the first lens barrel 3, the inner cavity of the first lens barrel 3 is connected to the image sensor module 5 inside the microcirculation imaging device body 1 and a plurality of lenses are installed in the inner cavity, and the light source irradiation module 4 comprises a ring-shaped LED light group 42 arranged at a certain inclination angle and surrounding the light entrance of the first lens barrel 3.

[0037] Specifically, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the annular LED light group 42 includes an annular circuit board 6, on which a plurality of LED lights 7 are installed at intervals, and the light source irradiation module 4 includes an annular lamp holder 8 sleeved at the end of the first lens barrel 3, and the annular lamp holder 8 is provided with a mounting surface 9 for mounting the annular circuit board 6, and the mounting surface 9 is a conical structure. The annular circuit board 6 is a flexible circuit board, and the back of the flexible circuit board is attached to the mounting surface 9 so that the LED lights 7 irradiate the surface of the tissue to be measured at a certain tilt angle.

[0038] The present invention can improve the uniformity of illumination within the field of view by tilting the LED lamp 7 at a certain angle. However, since the front end space of the lens barrel of the microcirculation imaging device is very small, the present invention adopts an installation method in which a flexible circuit board with an LED lamp 7 is pasted on the cone structure mounting surface 9, which can realize the rapid installation of the annular LED lamp group 42 and realize the tilt angle, solving the problem that it is difficult to achieve the tilted installation of the LED lamp 7 in a small space. The present invention can realize the compact arrangement of LEDs in a narrow space, realize annular dark field illumination, and improve the uniformity of illumination of the surface of the tissue to be measured. The annular LED lamp group 42 can illuminate the surface of the tissue to be measured at a certain tilt angle, and most of the reflections occurring on the surface of the tissue to be measured are emitted from the other side, reducing the light directly reflected from the surface of the tissue to be measured from entering the imaging light path, thereby improving the imaging contrast.

[0039] Specifically, the LED lamp 7 is mounted on the surface of the flexible circuit board by welding, and the back of the flexible circuit board is adhered to the conical structure by tesa-8853 double-sided translucent non-woven tape with anti-aging properties, so that the light source irradiation module 4 can be quickly and effectively installed at the end of the first lens barrel 3. In addition, those skilled in the art can also select other types of adhesives according to actual needs.

[0040] In one embodiment of the present invention, the annular lamp holder 8 can be sleeved on the end of the first lens barrel 3 by means of a threaded connection.

[0041] As a preferred embodiment of the present invention, Fig.13 As shown, the horizontal angle between the illumination axis of the LED lamp 7 and the surface of the tissue to be measured is 60 degrees. After testing, the horizontal angle of 60 degrees is the best. Of course, those skilled in the art can also appropriately adjust a certain angle within the range of about 60 degrees according to actual conditions.

[0042] In one embodiment of the present invention, the imaging receiving assembly 2 further includes a focusing module located between the microcirculation imaging device body 1 and the first lens barrel 3 .

[0043] Specifically, Figure 8 , Fig. 9 , Fig.10 , Fig.11As shown, the focusing module includes an adapter 10, one side of the adapter 10 is connected to the microcirculation imaging device body 1, and the other side of the adapter 10 extends outward to form a first sleeve 11, the inner cavity of the first sleeve 11 is connected to the image sensor module 5 inside the microcirculation imaging device body 1, the first lens barrel 3 is connected to the side of the first sleeve 11 and the inner cavity of the first lens barrel 3 is connected to the inner cavity of the first sleeve 11, a focusing sleeve 13 is installed on the outer surface of the first sleeve 11 through two left and right bearings 12, and a sleeve wall of the first sleeve 11 is provided with a A straight slide groove 14 extending in the direction of rotation, an inclined slide groove 15 is arranged on the wall of the focusing sleeve 13, an inner focusing barrel 16 is movably installed in the inner cavity of the first sleeve 11, and a focusing lens 43 is installed in the inner cavity of the inner focusing barrel 16, a sliding member 17 is installed on the outer side of the inner focusing barrel 16, and the sliding member 17 passes through the straight slide groove 14 and is inserted into the inclined slide groove 15. When the focusing sleeve 13 rotates, the sliding member 17 is driven to move in the straight slide groove 14 through the inclined slide groove 15, thereby driving the inner focusing barrel 16 to move forward and backward, and the inner focusing barrel 16 moves forward and backward, driving the focusing lens 43 to move to achieve focusing.

[0044] There are two groups of straight slide grooves 14, which are distributed on the left and right sides of the first sleeve 11; there are two groups of inclined slide grooves 15, which are distributed on the left and right sides of the focusing sleeve 13, and the inclined directions of the two groups of inclined slide grooves 15 are opposite. There are two groups of bearings 12, which are respectively located at the two end edges of the first sleeve 11.

[0045] It is understandable that the present invention installs the focusing sleeve 13 on the first sleeve 11 through the bearing 12, so that the focusing sleeve 13 can rotate relative to the first sleeve 11. Under the action of the bearing 12, the friction force generated when the focusing sleeve 13 rotates is very small, so the focusing sleeve 13 is very easy to rotate, and the feel of the focusing operation is greatly improved. In addition, a sliding member 17 is installed on the outside of the inner focusing barrel 16. The sliding member 17 passes through the straight slide groove 14 on the first sleeve 11 and is inserted into the inclined slide groove 15 of the focusing sleeve 13. When the focusing sleeve 13 rotates, the sliding member 17 is driven to move in the straight slide groove 14 through the inclined slide groove 15, thereby driving the inner focusing barrel 16 to move forward and backward. When the inner focusing barrel 16 moves forward and backward, the focusing lens 43 installed in the inner cavity of the inner focusing barrel 16 will also move synchronously, so that focusing can be achieved.

[0046] Preferably, the bearing 12 is a waterproof bearing 12 .

[0047] In one embodiment of the present invention, Figure 3 and Figure 6As shown, a power line 18 is connected to the annular circuit board 6 , and the power line 18 extends along the outer surface of the first lens barrel 3 to the inside of the microcirculation imaging device body 1 and is connected to the main circuit board 19 inside the microcirculation imaging device body 1 .

[0048] Specifically, a wire hole 20 is provided on one side of the first sleeve 11 , and the power cord 18 passes through the wire hole 20 and enters the inner cavity of the first sleeve 11 , and enters the interior of the microcirculation imaging device body 1 along the inner cavity of the first sleeve 11 .

[0049] In one embodiment of the present invention, a circle of raised first ring 21 is formed on the periphery of the first sleeve 11 on the other side of the adapter 10 , and a circle of second grooves 22 are provided on the side of the focusing sleeve 13 , and the first ring 21 is inserted into the second groove 22 .

[0050] It is understandable that the first ring 21 and the second groove 22 cannot fit tightly together, otherwise, a large friction force will be generated between the first ring 21 and the second groove 22. When the focusing sleeve 13 rotates, the first ring 21 also rotates in the second groove 22. Through the cooperation between the first ring 21 and the second groove 22, a multi-layer stepped structure is formed, which is beneficial to the waterproof and dustproof of the focusing module. In addition, a layer of dustproof oil can be applied in the second groove 22 according to actual use needs, so that the dustproof effect will be further improved.

[0051] In one embodiment of the present invention, the imaging receiving assembly 2 further includes an outer lens barrel 23, which is sleeved outside the first lens barrel 3, one end of the outer lens barrel 23 is connected to the side of the first sleeve 11, and the other end of the outer lens barrel 23 is a closed surface.

[0052] The outer lens barrel 23 is made of stainless steel and is made by CNC processing. The outer lens barrel 23 includes an upper lens barrel 24 and a lower lens barrel 25. One end of the upper lens barrel 24 is connected to the side of the first sleeve 11, and the other end of the upper lens barrel 24 is connected to one end of the lower lens barrel 25 by a thread. The other end of the lower lens barrel 25 is inlaid with a sapphire glass sheet 26 as a closed surface. The sapphire glass sheet 26 has a relatively high hardness and can avoid scratches. At the same time, the sapphire glass sheet 26 has a high light transmittance, thereby ensuring the clarity of microcirculation imaging.

[0053] In this embodiment, an outer lens barrel 23 is further placed outside the first lens barrel 3 to protect the first lens barrel 3, and the outer lens barrel 23 has dustproof and waterproof effects, and can prevent liquid from entering the inner cavity of the first lens barrel 3 and the inside of the microcirculation imaging body through the gap of the first lens barrel 3. In addition, in this embodiment, the outer lens barrel 23 is designed as a segmented structure, that is, it includes an upper lens barrel 24 and a lower lens barrel 25, so that the problem of reduced inner cavity processing accuracy during one-piece molding due to excessive length of the lens barrel can be avoided. By setting the upper lens barrel 24 and the lower lens barrel 25, the lengths of the upper lens barrel 24 and the lower lens barrel 25 are relatively short, and the processing accuracy of the inner cavity is guaranteed, and then the upper lens barrel 24 and the lower lens barrel 25 are connected together by threaded connection to form the outer lens barrel 23.

[0054] In one embodiment of the present invention, the edge of one end of the outer lens barrel 23 extends outward to form a mounting disk surface 27, and the mounting disk surface 27 is provided with a screw hole 28 for matching with a bolt 29 to be fixedly connected to the side of the first sleeve 11, and a waterproof rubber ring 30 is sleeved in the bolt 29, and a second ring 31 is provided on the side of the focusing sleeve 13 close to the mounting disk surface 27, and a third groove 32 is provided on the inner side of the mounting disk surface 27, and the second ring 31 is inserted into the third groove 32. In addition, a layer of dustproof oil can also be coated in the third groove 32.

[0055] It is understandable that the second ring 31 and the third groove 32 cannot fit tightly together, otherwise, a large friction force will be generated between the second ring 31 and the third groove 32. When the focusing sleeve 13 rotates, the second ring 31 also rotates in the third groove 32, and a multi-layer stepped structure is formed by the cooperation between the second ring 31 and the third groove 32, which is beneficial to waterproof and dustproof of the focusing module.

[0056] In one embodiment of the present invention, the left and right sides of the focusing sleeve 13 are respectively formed with mounting grooves 33 for mounting the bearing 12, the inner wall surface of the bearing 12 is in close contact with the outer surface of the first sleeve 11, and the outer wall surface of the bearing 12 is in close contact with the inner wall of the mounting groove 33, wherein Figure 6 As shown, the inner wall surface of the bearing 12 close to the side of the outer barrel 23 partially protrudes from the side surface of the first sleeve 11, and a circle of circular bosses 34 are provided on the inner side of the mounting plate surface 27, and the annular surface of the circular boss 34 is tightly attached to the inner wall surface of the bearing 12 protruding from the side surface of the first sleeve 11.

[0057] The present invention can cover the interface between the first lens barrel 3 and the first sleeve 11 by setting a mounting disk 27, and a third groove 32 is set on the inner side of the mounting disk 27, and a layer of dustproof oil is coated in the third groove 32. A second ring 31 is set on the side of the focusing sleeve 13 close to the mounting disk 27, and the second ring 31 is inserted into the third groove 32. At the same time, the inner wall surface of the bearing 12 close to the outer lens barrel 23 protrudes from the side of the first sleeve 11, and a circle of circular bosses 34 are set on the inner side of the mounting disk 27. The annular surface of the circular boss 34 is tightly attached to the inner wall surface of the bearing 12 protruding from the side part of the first sleeve 11, which can enhance the dustproof and waterproof effect. At the same time, by sleeve-fitting a waterproof rubber ring 30 in the bolt 29, liquid can be prevented from entering from the gap between the bolt 29 and the screw hole 28.

[0058] In one embodiment of the present invention, the focusing module also includes a manual focusing ring 35, which is sleeved on the outside of the focusing sleeve 13. The outer surface of the focusing sleeve 13 is provided with raised rings 36 at both ends near the edge. A circle of sealing grooves 37 is provided on the annular surface of the raised ring 36. A sealing rubber ring 38 is placed in the sealing groove 37. The inner surface of the manual focusing ring 35 squeezes the sealing rubber ring 38. When the manual focusing ring 35 rotates, it drives the focusing sleeve 13 to rotate synchronously.

[0059] It is understandable that after the sealing rubber ring 38 is placed in the sealing groove 37, a part of it protrudes from the annular surface of the raised ring 36. After the manual focus ring 35 is inserted into the outer surface of the focus sleeve 13, the inner surface of the manual focus ring 35 will squeeze the sealing rubber ring 38. Under the action of the friction between the sealing rubber ring 38 and the inner surface of the manual focus ring 35, the manual focus ring 35 can drive the focus sleeve 13 to rotate synchronously when rotating, that is, the sealing rubber ring 38 plays a transmission role. In addition, by providing the sealing rubber ring 38, the effect of sealing and waterproofing can also be achieved, which can prevent liquid from entering from the gap between the manual focus ring 35 and the annular surface of the raised ring 36 and then entering the first sleeve 11 through the inclined slide groove 15 and the straight slide groove 14.

[0060] In one embodiment of the present invention, the main body 1 of the microcirculation imaging device includes a cylindrical shell 39, an outer ring surface 40 on one side of the adapter 10 is sleeved with an opening at one end of the cylindrical shell 39, and a circle of first grooves 41 are provided on the outer ring surface 40, and a sealing rubber ring 38 is installed in the first groove 41 for abutting against the inner surface of the cylindrical shell 39.

[0061] It can be understood that the present invention prevents liquid from entering the interior of the cylindrical shell 39 from the gap between the outer ring surface 40 of the adapter 10 and the inner surface of the cylindrical shell 39 by fitting the outer ring surface 40 on one side of the adapter 10 into the opening of one end of the cylindrical shell 39 and providing a circle of first grooves 41 on the outer ring surface 40, and installing a sealing rubber ring 38 in the first groove 41 for abutting against the inner surface of the cylindrical shell 39.

[0062] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection of the present invention.

Claims

1. A microcirculation imaging device with high imaging contrast, characterized in that: The device comprises a microcirculation imaging device body and an imaging receiving assembly, wherein the imaging receiving assembly comprises a first lens barrel and a light source irradiation module installed at the end of the first lens barrel, wherein the inner cavity of the first lens barrel is connected to the image sensor module inside the microcirculation imaging device body and a lens is installed in the inner cavity, and the light source irradiation module comprises a ring-shaped LED light group arranged at an inclined angle and surrounding the light inlet of the first lens barrel; The imaging receiving assembly also includes a focusing module located between the microcirculation imaging device body and the first lens barrel, the focusing module includes an adapter, one side of the adapter is connected to the microcirculation imaging device body, and the other side of the adapter extends outward to form a first sleeve, the first lens barrel is connected to the side of the first sleeve, and a focusing sleeve is installed on the outer surface of the first sleeve through two left and right bearings, a straight slide groove extending along the length direction of the first sleeve is provided on the barrel wall of the first sleeve, an inclined slide groove is provided on the barrel wall of the focusing sleeve, an inner focusing barrel is movably installed in the inner cavity of the first sleeve, and a focusing lens is installed in the inner cavity of the inner focusing barrel, a sliding member is installed on the outer side of the inner focusing barrel, and the sliding member passes through the straight slide groove and is inserted into the inclined slide groove. When the focusing sleeve rotates, the sliding member is driven to move in the straight slide groove through the inclined slide groove, thereby driving the inner focusing barrel to move forward and backward.

2. A microcirculation imaging device with high imaging contrast according to claim 1, characterized in that: The annular LED lamp group includes an annular circuit board, on which a plurality of LED lamps are installed at intervals. The light source illumination module includes an annular lamp holder sleeved on the end of the first lens barrel, on which a mounting surface for mounting the annular circuit board is provided, and the mounting surface is a conical structure.

3. A microcirculation imaging device with high imaging contrast according to claim 2, characterized in that: The annular circuit board is a flexible circuit board, and the back side of the flexible circuit board is adhered to the mounting surface so that the LED light can illuminate the surface of the tissue to be tested at an inclined angle.

4. A microcirculation imaging device with high imaging contrast according to claim 1, characterized in that: The horizontal angle between the illumination optical axis of the LED lamp and the surface of the tissue to be measured is 60 degrees.

5. The microcirculation imaging device with high imaging contrast according to claim 2, characterized in that: The annular circuit board is connected with a power line, and the power line extends along the outer surface of the first lens barrel to the inside of the microcirculation imaging device body and is connected to the main circuit board inside the microcirculation imaging device body.

6. The microcirculation imaging device with high imaging contrast according to claim 1, characterized in that: The imaging receiving assembly also includes an outer lens barrel, which is sleeved outside the first lens barrel, one end of the outer lens barrel is connected to the side surface of the first sleeve, and the other end of the outer lens barrel is a closed surface.

7. A microcirculation imaging device with high imaging contrast according to claim 6, characterized in that: The focusing module also includes a manual focusing ring, which is sleeved on the outside of the focusing sleeve. The outer surface of the focusing sleeve is provided with raised rings at both ends near the edge. A circle of sealing grooves is provided on the annular surface of the raised rings. A sealing rubber ring is placed in the sealing groove. The inner surface of the manual focusing ring squeezes the sealing rubber ring. When the manual focusing ring rotates, it drives the focusing sleeve to rotate synchronously.

8. The microcirculation imaging device with high imaging contrast according to claim 6, characterized in that: The main body of the microcirculation imaging device includes a cylindrical shell, the outer ring surface on one side of the adapter is sleeved with an opening at one end of the cylindrical shell and a circle of first grooves are arranged on the outer ring surface, and a sealing rubber ring is installed in the first groove for abutting against the inner surface of the cylindrical shell.

Images