CN219439089U

CN219439089U - Blood vessel imaging device

Info

Publication number: CN219439089U
Application number: CN202320041871.2U
Authority: CN
Inventors: 王娜
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-01-06
Filing date: 2023-01-06
Publication date: 2023-08-01
Anticipated expiration: 2033-01-06

Abstract

The utility model relates to the technical field of medical instruments, in particular to a vascular imaging device, which comprises a shell, wherein a light hole is formed in the bottom of the shell, an infrared imaging module, a reflecting mirror, a spectroscope, a visible light projection module and a control module are arranged in the shell, the infrared imaging module comprises an upper near infrared light beam generator, a near infrared camera and a lower near infrared light beam generator which are sequentially arranged from top to bottom, the reflecting mirror is positioned at the intersection of the central line of the near infrared camera and the central line of the light hole, the reflecting mirror is driven by a stepping motor to swing reciprocally in a certain angle range, the spectroscope is obliquely arranged right above the light hole, the visible light projection module is positioned at one side of the light hole and irradiates towards the spectroscope, and the control module is respectively electrically connected with the infrared imaging module, the stepping motor and the visible light projection module.

Description

Blood vessel imaging device

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a vascular imaging device.

Background

The existing near infrared vein imaging technology uses near infrared light with stronger penetrating power, and particularly, the near infrared light with 760nm-940nm is widely applied, but the adopted method still comprises the steps of integrally covering a target by the near infrared light, shooting by a camera, generating reflected light when illumination light is incident to skin tissues and capturing the reflected light by the camera, wherein the reflected light does not contain subcutaneous blood vessel information and belongs to interference noise, therefore, the image effect cannot be increased by a method of increasing the illuminance of the near infrared light, the deep blood vessels are very weak in development (namely, difference of brightness and darkness) on the skin, and the imaging by the camera is difficult to accurately identify under the interference of the reflected light of the skin.

The information disclosed in this background section is only for enhancement of understanding of the general background of the disclosure and is not to be taken as an admission or any form of suggestion that this information forms the prior art that is well known to a person skilled in the art.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: there is provided a vascular imaging device that solves at least one of the problems mentioned in the background.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a vascular imaging device, includes the casing, the casing bottom is provided with the light trap, be equipped with infrared imaging module, speculum, spectroscope, visible light projection module and control module in the casing, infrared imaging module includes last near infrared beam generator, near infrared camera and the near infrared beam generator that from the top down set gradually, the speculum is located near infrared camera central line with the intersection of light trap central line, the speculum carries out the reciprocal swing of certain angle range through the step motor drive, the spectroscope slope set up in directly over the light trap, visible light projection module is located light trap one side and orientation the spectroscope shines, control module respectively with infrared imaging module step motor with visible light projection module electricity is connected.

Further, the near infrared camera adopts a linear array camera, and the upper near infrared beam generator and the lower near infrared beam generator both emit near infrared laser beams with linear cross sections.

Further, the infrared imaging module and the visible light projection module are respectively positioned at two sides of the reflecting mirror.

Further, the spectroscope is arranged in a 45-degree inclined mode.

Further, the spectroscope is used for transmitting near infrared region light and reflecting visible light.

Further, the rotation axis of the reflecting mirror is located on the center line of the light path right in front of the near infrared camera.

Further, the light-transmitting hole is covered with a light-transmitting glass lens.

Further, a power module is arranged on the back of the shell, and the power module is a rechargeable rectangular battery or a power shell with a battery inside.

Further, a bracket is arranged below the power module, and the bracket is a handheld seat or a base with an upright post.

Further, when the bracket is a base with an upright post, an arc-shaped groove is formed in the base.

The beneficial effects of the utility model are as follows: the vascular imaging device provided by the utility model has the advantages that the upper near infrared beam generator and the lower near infrared beam generator are utilized to form a pair of very narrow linear irradiation areas on skin tissues, the near infrared camera is aligned to the middle parts of the linear irradiation areas, namely, the areas which are not directly irradiated by light beams are collected, subcutaneous diffuse reflection light information is obtained, the way that skin reflection light enters the infrared camera is avoided, compared with the conventional direct shooting of a large area, vascular information with high contrast can be obtained, deep blood vessels can be found, the detection precision is high, the vascular imaging device is more suitable for fat patients, the reflector is driven to swing back and forth by the stepping motor, the line units are connected into a detection area, and the visible light image which is 1:1 of the detection area is projected by the visible light projection module, so that medical staff can find blood vessels of patients conveniently, and the vascular imaging device has practicability.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.

Fig. 1 is a schematic structural view of an angiography device (with part of the housing omitted) according to an embodiment of the utility model;

fig. 2 is a front view of an angiography device (with a portion of the housing omitted) according to an embodiment of the utility model;

FIG. 3 is a schematic view of an embodiment of the present utility model from another perspective of the vascular imaging device (with a portion of the housing omitted);

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is a near infrared beam reflection diagram of a mirror swinging to a first angle according to an embodiment of the present utility model;

FIG. 6 is a near infrared beam reflection diagram of a mirror swinging to a second angle in an embodiment of the present utility model;

fig. 7 is a schematic diagram for showing a near-infrared beam irradiation region and a visible light irradiation region.

Reference numerals: 1. a housing; 2. a light transmitting glass lens; 3. a reflecting mirror; 4. a beam splitter; 5. a visible light projection module; 6. a control module; 7. an upper near infrared beam generator; 8. a near infrared camera; 9. a lower near infrared beam generator; 10. a stepping motor; 11. a power module; 12. a column; 13. a base; 14. an arc-shaped groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

The vascular imaging device shown in fig. 1-7 comprises a shell 1, wherein a light hole is formed in the bottom of the shell 1, and an infrared imaging module, a reflecting mirror 3, a spectroscope 4, a visible light projection module 5 and a control module 6 are arranged in the shell 1.

As shown in fig. 4, the infrared imaging module includes an upper near-infrared beam generator 7, a near-infrared camera 8 and a lower near-infrared beam generator 9, where the upper near-infrared beam generator 7 and the lower near-infrared beam generator 9 each emit near-infrared laser beams with a linear cross section, the near-infrared laser beams with a linear cross section can be realized by restraining the near-infrared laser beams by using a shaping device with a rectangular through hole, in colloquial, the near-infrared laser beams emitted by the upper near-infrared beam generator 7 and the lower near-infrared beam generator 9 each emit a very narrow straight line onto the reflecting mirror 3, the upper near-infrared beam generator 7 and the lower near-infrared beam generator 9 are both obliquely arranged and emit beams towards the reflecting mirror 3 gradually approaching, the near-infrared camera 8 adopts a linear camera, the linear camera has an infrared camera lens and an image sensor, and the collected image shows a linear;

the reflecting mirror 3 is located at the intersection of the center line of the near infrared camera 8 and the center line of the light transmitting hole, the reflecting mirror 3 is driven by the stepping motor 10 to perform reciprocating oscillation within a certain angle range, the reflecting mirror 3 of the embodiment can adopt a plane mirror, the incident angle and the reflecting angle of the light beam are equal, as can be seen from fig. 5 and 6, the reflecting mirror 3 reflects the two near infrared lights emitted by the upper near infrared light beam generator 7 and the lower near infrared light beam generator 9 downwards, the reflecting mirror 3 performs reciprocating oscillation within a certain angle range by the driving of the stepping motor 10, so that the two parallel linear near infrared lights are pushed and swept at the target, meanwhile, the near infrared camera 8 shoots the two near infrared light intermediate areas, namely the linear acquisition units, to generate a line image, push and sweep one cycle is performed to obtain two groups of line images, the line images are sequentially arranged to obtain a plane image, wherein the images obtained by push and sweep are sequentially arranged in a positive column order, the images obtained by push and sweep are sequentially arranged when the reflecting mirror 3 swings clockwise, so that the line images obtained by push and sweep are converted into a plane image of a certain area, the line image is formed by the opposite column order, the swing amplitude of the reflecting mirror 3 is controlled by the stepping motor, and the starting position is triggered by the stepping motor, and the starting position is provided by the starting position signals;

the spectroscope 4 is used for transmitting near infrared light and reflecting visible light, as can be seen from fig. 5-7, the near infrared light reflected by the reflecting mirror 3 directly passes through the spectroscope 4 downwards, and the visible light emitted by the visible light projection module 5 irradiates the surface of the human tissue in the lower area after being reflected by the spectroscope 4;

the visible light projection module 5, which may be a projector, emits visible light pictures that people can see;

the control module 6 is electrically connected with the infrared imaging module, the stepping motor 10 and the visible light projection module 5 respectively, the control module 6 can control the stepping motor 10 and each component to operate, and is used for receiving image signals collected by the near infrared camera 8, outputting the image signals to the visible light projection module 5 after calculation and integration, projecting a picture of blood vessel imaging to a detection area by the projection module 5, enabling the projected visible light image to coincide with the original detection area 1:1 through sensor size matching and lens focal length matching, and achieving the purpose of imaging subcutaneous blood vessel information on skin.

The utility model provides a vascular imaging device, which is based on the principle that a pair of linear irradiation areas are formed by an upper near infrared beam generator 7 and a lower near infrared beam generator 9, a narrow linear acquisition unit is arranged in the middle of the irradiation areas, a reciprocating swinging reflecting mirror 3 is driven by a stepping motor 10, the linear acquisition units are connected into a detection area, after strong light beams emitted by the upper near infrared beam generator 7 and the lower near infrared beam generator 9 are incident into skin, scattering in all directions can be carried out, the forward scattering and backward scattering towards the skin surface are included, when the incident light beams scatter to the position right below the linear units, if blood vessels exist at the position, hemoglobin in blood can strongly absorb near infrared light, backward scattering light is weakened, a 'dark area' is formed at the position of the line units on the skin surface, if blood vessels do not exist at the position, the backward scattering is normal, a relative 'bright area' caused by diffuse light is formed at the skin surface, after a camera shoots the whole dark bright features of the detection units, the dark bright features of the whole detection area can be obtained, namely the bright features representing the blood vessels exist, the blood vessels can be seen by adopting the spatial position, and the visible image projection of the visible light on the skin surface of a skin module can see the image through the skin, and the image can see the image on the skin by the position of the skin, and the image can see the image by the image on the skin.

As a preference of the above embodiment, in order to optimize the layout of each module, the infrared imaging module and the visible light projection module 5 are respectively located on two sides of the reflecting mirror 3, and the visible light projection module 5 may be located on the same side of the infrared imaging module, where the beam splitter 4 needs to be adjusted to tilt, but this layout needs a higher housing height and is easily heavy, so the above layout is a reasonable layout manner in this embodiment.

More specifically, in order to facilitate projection, the beam splitter 4 is disposed at an angle of 45 ° so that the projector irradiates horizontally.

In order to facilitate calculation of the scanning range of the mirror 3, the rotation axis of the mirror 3 is located on the optical path center line directly in front of the near infrared camera 8.

As further disclosed in the above embodiment, the back of the housing 1 is provided with a power module 11, the power module 11 is a rechargeable rectangular battery or a power housing with a battery inside, a bracket is provided below the power module 11, the bracket is a handheld seat or a base 13 with a stand 12, when the bracket is a handheld seat, a medical staff can place the device above the skin of a patient in a manner of holding the handheld seat by hand, as shown in fig. 1, when the bracket is the base 13 with the stand 12, an arc-shaped groove 14 is provided on the base 13, so that the arm of the patient can be conveniently placed on the base 13.

It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a vascular imaging device, its characterized in that, includes casing (1), casing (1) bottom is provided with the light trap, be equipped with infrared imaging module, speculum (3), spectroscope (4), visible light projection module (5) and control module (6) in casing (1), infrared imaging module includes last near infrared beam generator (7), near infrared camera (8) and lower near infrared beam generator (9) that from the top down set gradually, speculum (3) are located near infrared camera (8) central line with the intersection of light trap central line, speculum (3) are driven through step motor (10) and are carried out the reciprocal swing of certain angle range, spectroscope (4) slope set up in directly over the light trap, visible light projection module (5) are located light trap one side and orientation light trap (4) are shone, control module (6) respectively with infrared imaging module step motor (10) with visible light projection module (5) electricity is connected.

2. Vessel imaging device according to claim 1, characterized in that the near infrared camera (8) employs a line camera, and the upper near infrared beam generator (7) and the lower near infrared beam generator (9) each emit a near infrared laser beam having a linear cross section.

3. Vessel imaging device according to claim 2, characterized in that the infrared imaging module and the visible light projection module (5) are located on both sides of the mirror (3), respectively.

4. Vessel imaging device according to claim 1, characterized in that the beam splitter (4) is arranged at an angle of 45 °.

5. Vessel imaging device according to claim 1, characterized in that the beam splitter (4) is adapted to transmit light in the near infrared region and to reflect visible light.

6. Vessel imaging device according to claim 1, characterized in that the axis of rotation of the mirror (3) is located on the optical path centre line directly in front of the near infrared camera (8).

7. Vessel imaging device according to claim 1, characterized in that the light transmission aperture is covered with a light-transmitting glass lens (2).

8. Vessel imaging device according to claim 1, characterized in that the back of the housing (1) is provided with a power supply module (11), the power supply module (11) being a rechargeable rectangular battery or a power supply housing with a battery inside.

9. Vessel imaging device according to claim 8, characterized in that a bracket is arranged below the power supply module (11), which bracket is a hand-held seat or a base (13) with a stand (12).

10. Vessel imaging device according to claim 9, wherein when the carrier is a base (13) with uprights (12), the base (13) is provided with arcuate recesses (14).