CN106264467B

CN106264467B - Multifunctional double-infrared blood vessel imaging instrument and imaging method thereof

Info

Publication number: CN106264467B
Application number: CN201610651310.9A
Authority: CN
Inventors: 崔庆; 向宇; 赵家丽; 沈明星; 张卓辉; 王志飞; 关肖州
Original assignee: Henan Alson Intelligent Technology Co ltd
Current assignee: Henan Alson Intelligent Technology Co ltd
Priority date: 2016-08-10
Filing date: 2016-08-10
Publication date: 2023-05-23
Anticipated expiration: 2036-08-10
Also published as: CN106264467A

Abstract

The invention relates to a multifunctional double-infrared vessel imaging instrument and an imaging method thereof, wherein the imaging instrument comprises a portable shell, a power module, an image acquisition module, a double-infrared light source module, an operation processing module and a projection module are arranged in the shell, and a wireless transmission module is also arranged in the shell, wherein the power module supplies power for other modules; the output end of the image acquisition module is connected with the input end of the operation processing module, and the output end of the operation processing module is respectively connected with the projection module and the wireless transmission module; the double infrared light source module consists of an LED lamp with the wavelength of 850nm and an LED lamp with the wavelength of 940 nm; the image acquisition module comprises a sensor and a band-pass filter arranged in front of the sensor. The invention improves the accuracy and success rate of medical puncture; the device is convenient for checking the body surface tumor, venous thrombosis, blood flow information or internal bleeding, and can be used for detection in hospitals or home self-detection; the wireless transmission function enables the equipment to be remotely diagnosed, and reduces the use limitation of the equipment.

Description

Multifunctional double-infrared blood vessel imaging instrument and imaging method thereof

Technical Field

The invention belongs to the field of biomedical imaging equipment, and particularly relates to a multifunctional dual-infrared vascular imaging instrument and an imaging method thereof.

Background

Intravenous infusion is a highly specialized technique and medical personnel must perform accurate venipuncture in order to achieve a therapeutic procedure for intravenous infusion. In conventional venipuncture procedures, medical personnel typically ligate the front end of a blood vessel to protrude, then determine the position of the vein by observation and experience, and then perform venipuncture. Although the operation has a certain success rate, the experience of the medical staff on the touch hand feeling, visual observation force and the like of the vein of the patient is mainly relied on, and the operation skill, working experience and even psychological quality of the medical staff are often required to be higher; in clinical practice, if the patient is obese, weak, or has a darker skin color, veins are often not easy to show, especially in pediatrics, the blood vessels of children are very small and difficult to locate, so that great inconvenience is brought to the operation of medical staff, and multiple puncture attempts are often needed to be successful. Under the condition, the diagnosis and treatment efficiency of patients is greatly reduced, and if the condition is serious, doctor-patient disputes can be caused. In addition, no auxiliary equipment capable of simply observing subcutaneous hemorrhage of a patient is available clinically, and a venous blood vessel display instrument is developed for solving the problems. For example, a multifunctional vascular imaging device based on near infrared light absorption and projection (patent application No. 201410709873. X), which is a typical vein imaging device, can be used to penetrate human tissue by irradiating infrared light onto the skin surface, and the vein blood vessel is obviously distinguished from the surrounding tissue by utilizing the specific absorption spectrum characteristic of deoxyhemoglobin. And the infrared image of the part to be punctured is shot and projected to the original part, so that the medical staff can be assisted in positioning veins to assist in puncturing.

In the above technical scheme, the vein blood vessel is basically and completely distinguished from surrounding tissues by virtue of infrared optical characteristics, and the vein blood vessel can be seen but has low distinguishing degree and poor visual effect, so that the experience of the end user is poor.

Disclosure of Invention

The invention provides multifunctional dual-light source vein blood vessel imaging and projection and real-time wireless transmission diagnosis and treatment equipment, which can clearly observe the vein blood vessel distribution of a human body, improve the blood vessel puncture efficiency, relieve the illness of a patient, has the functions of wireless transmission and remote display, and is light and reliable.

The aim of the invention and the technical problems are solved by adopting the following technical proposal. The multifunctional double-infrared vascular imaging instrument comprises a portable shell, wherein a power module, an image acquisition module, a double-infrared light source module, an operation processing module and a projection module are arranged in the shell, and a wireless transmission module is also arranged in the shell, wherein the power module supplies power for other modules; the output end of the image acquisition module is connected with the input end of the operation processing module, and the output end of the operation processing module is respectively connected with the projection module and the wireless transmission module; the double infrared light source module consists of an LED lamp with the wavelength of 850nm and an LED lamp with the wavelength of 940 nm; the image acquisition module comprises a sensor and a band-pass filter arranged in front of the sensor.

The object of the present invention and the solution to the technical problems thereof can be further achieved by the following technical measures.

The multifunctional dual-infrared vascular imaging instrument comprises an operation processing module, a self-calibration module, a self-adaptive filtering module, a morphological enhancer module and a color conversion module which are sequentially connected.

The multifunctional dual-infrared vascular imaging instrument is characterized in that the projection module adopts DLP projection.

The multifunctional double-infrared angiogram instrument is characterized in that the front surface of the portable shell is provided with an indicator light and a switch button, wherein the indicator light comprises a power indicator light, a CPU indicator light and a heating indicator light, and the switch button comprises a self-calibration switch, a start-stop switch, a working state change-over switch and a wireless transmission change-over switch.

The multifunctional dual-infrared angiography instrument is characterized in that the back surface of the portable shell is provided with a shooting and projection hole, a 850nm light source projection hole and a 940nm light source projection hole.

The multifunctional double-infrared angiography instrument is characterized in that the portable shell consists of two shells which are buckled with each other, and a groove is formed in the middle of the shell which forms the back of the shell.

The multifunctional double-infrared blood vessel imaging instrument further comprises a fixing support, and a fixing groove matched with the portable shell is formed in the fixing support.

The purpose of the invention and the technical problems can be solved by adopting the following technical proposal. The invention provides a developing method of a multifunctional double-infrared vascular developing instrument, which comprises the following steps:

1) The double infrared light source module emits infrared light to the skin to be detected;

2) The image acquisition module acquires an image of the projection area and transmits the image to the operation processing module, and the processing process of the operation processing module comprises the following steps:

a) The image preprocessing sub-module is utilized to carry out linear enhancement processing on the image, so that the contrast of the image is improved;

b) The self-calibration module is utilized to identify the mark patterns on the calibration plate and projected by placing the special calibration plate in a projection working area, automatically detect errors and adjust the image projection position according to the errors;

c) The self-adaptive filtering submodule is utilized to further improve the contrast and quality of the blood vessel image by enhancing the image similar to the blood vessel image in the local image and weakening the images of other areas;

d) The morphological enhancement submodule is used for processing the image by adopting morphological operation, and on the premise of not increasing the range of the blood vessel image, the area of non-uniformity and discontinuity in the image is intelligently filled, so that the quality of the image is further enhanced;

e) Transforming the graphics colors according to the preference of the user to select the projection colors by utilizing a color transformation sub-module;

3) The operation processing module outputs the processed image to the projection module and the wireless transmission module, then the projection module projects the image to a projection area of skin to be detected, and the wireless transmission module transmits the image to other devices.

By adopting the technical scheme, the invention has the following advantages and benefits:

1) The self-calibration function can calibrate the projection precision according to the calibration plate distributed by the equipment, so that the projection precision is enhanced, the medical puncture accuracy and success rate are greatly improved, the noninvasive detection is realized, and the pain of a patient is reduced.

2) The self-adaptive filtering and morphological enhancement function strengthens the quality of the blood vessel image, enhances the display effect of the image and further improves the accuracy of the blood vessel image. The convenient examination body surface lump, venous thrombosis, blood flow information or internal bleeding condition can be detected in hospitals, and can also be detected at home to observe the rehabilitation condition, thereby playing a role in promoting treatment.

3) The wireless transmission function enables the device to be clinically observed and remotely diagnosed, and the use limitation of the device is greatly reduced.

Drawings

FIG. 1 is a system diagram of a multifunctional dual infrared vessel imaging instrument according to the present invention;

FIG. 2 is a flow chart showing the processing of the operation processing module of the multifunctional dual-infrared vessel imaging instrument;

FIG. 3 (a) is a perspective view of a multifunctional dual infrared angiography apparatus of the present invention;

fig. 3 (b) is a rear view of a multifunctional dual infrared angiography apparatus of the present invention.

[ Main element symbols description ]

1: power indicator lamp

2: CPU indicator lamp

3: heating indicator lamp

4: self-calibrating switch

5: start-stop switch

6: working state change-over switch

7: wireless transmission change-over switch

8: image pick-up and projection hole

9:850nm light source throwing hole

10:940nm light source throwing hole

11: groove

Detailed Description

In order to further describe the technical means and effects adopted by the invention to achieve the preset aim, the following detailed description refers to the specific implementation, structure, characteristics and effects of a multifunctional dual infrared angiography instrument according to the invention with reference to the accompanying drawings and the preferred embodiment.

Referring to fig. 1, fig. 2, fig. 3 (a) and fig. 3 (b), the multifunctional dual-infrared blood vessel imaging apparatus provided by the invention comprises a portable housing, wherein a power module, an image acquisition module, a dual-infrared light source module, an operation processing module, a projection module and a wireless transmission module are arranged in the housing, and the power module supplies power for other five modules; the output end of the image acquisition module is connected with the input end of the operation processing module, and the output end of the operation processing module is respectively connected with the projection module and the wireless transmission module.

The power module supplies power to the equipment in a battery or adapter mode, so that a user can conveniently use the equipment in various states such as free hand holding, stable fixing and the like, and the convenience of the equipment is improved.

The dual infrared light source module consists of an LED lamp with the wavelength of 850nm and an LED lamp with the wavelength of 940 nm. Table 1 is image contrast data of different wavelengths tested by experiments, where image contrast = non-venous area gray scale mean/venous area gray scale mean, the larger the ratio the higher the image contrast.

TABLE 1 image contrast data

Wavelength range	Contrast mean	Wavelength range	Contrast mean
				760	1.095 957 7	760+850	1.090 090 5
850	1.086 177 3	850+940	1.094 515 8
				940	1.089 877 4	760+850	1.090 088 2

As can be seen from Table 1, the contrast of the image is highest in 760nm and 850+940nm dual light source stages, but the 760nm wavelength stage is easily interfered by natural light, and the problem that the blood vessel image cannot be acquired when testing is performed on some patients can occur, so that the 850+940nm dual infrared light source is adopted in the invention.

The image acquisition module is used for acquiring an image of skin to be detected at the irradiation position of the double infrared light sources and comprises a near infrared CMOS sensor, and infrared light reflected back from the body surface of the patient is acquired through the sensor. In order to capture clear dual-band infrared images, the infrared sensing capability of the sensor reaches 20% in 940nm band. In addition, in order to reduce interference of natural light on infrared images, a band-pass filter is additionally arranged in front of the infrared CMOS sensor.

And the operation processing module is used for enhancing the blood vessel image acquired by the image acquisition module. The operation processing module comprises an image preprocessing sub-module, a self-calibration sub-module, an adaptive filtering sub-module, a morphological enhancer module and a color conversion sub-module which are connected in sequence.

The image preprocessing sub-module carries out linear enhancement processing on the image, so that the contrast of the image is greatly improved. The self-calibration module is used for automatically detecting errors and adjusting the image projection position according to the errors by placing a special calibration plate in a projection working area and identifying the mark patterns on the calibration plate and projected.

The self-adaptive filtering submodule further improves the contrast and quality of the blood vessel image by enhancing the image (continuous strip-shaped area) similar to the blood vessel image in the local image and weakening the images of other areas.

The morphological enhancement submodule adopts morphological operation to process the image, and has the function of intelligently filling the non-uniform and discontinuous areas in the image on the premise of not increasing the range of the blood vessel image, thereby further enhancing the quality of the image.

The color conversion sub-module converts the graphics colors according to the preference of the user to select the projected colors.

The projection module adopts DLP projection to project the blood vessel image processed by the operation processing module. The DLP projection has the advantages of excellent reflectivity principle, high image definition, uniform picture, sharp color, noiseless image, stable picture quality and very accurate projection position.

And the wireless transmission module transmits the image processed by the operation processing module to the external display equipment in real time through the WIFI signal. The doctor can watch the screen conveniently on site, remotely, consultation and the like.

The front of portable casing is equipped with pilot lamp and switch button, and wherein the pilot lamp includes power indicator lamp 1, CPU pilot lamp 2 and generates heat pilot lamp 3, and the switch button includes self calibration switch 4, start stop switch 5, operating condition change over switch 6 and wireless transmission change over switch 7.

The back of the portable shell is provided with an imaging and projection hole 8, a 850nm light source projection hole 9 and a 940nm light source projection hole 10.

The portable shell consists of two shells which are buckled with each other, and the middle part of the shell which forms the back of the shell is provided with a groove 11.

When the equipment is charged, the medical staff can directly hold the handle end of the venous vessel imaging instrument, and can use the venous vessel imaging instrument after opening the equipment and adjusting the working mode through the keys. The working mode is suitable for medical staff to use when needing large-scale activities, and is convenient and quick.

In another embodiment of the present invention, the portable housing further comprises a fixing bracket matched with the portable housing, and a rotating fixing groove matched with the portable housing is formed in the top end of the fixing bracket. Medical personnel can fix this equipment on the fixed bolster when high frequency or need stabilize and observe the patient, only need insert the fixed slot on fixed bolster top with the handle end of portable casing during the fixed, then adjust the gradient of support and can use. In this state, the power connection line can be connected to charge the device during operation.

The invention adopts 850nm and 940nm dual infrared light sources to irradiate the skin surface, so that the contrast ratio between vein blood vessels and surrounding tissues is greatly improved; the blood vessel image acquired by the camera is enhanced by adopting algorithms such as self-adaptive filtering and the like, so that the contrast of the venous blood vessel image is greatly improved, and the blood vessel image is displayed more clearly; the automatic blood vessel projection calibration device has the self-calibration function, can automatically calibrate the accuracy through the calibration plate, greatly improves the accuracy of blood vessel projection, and also adopts a wireless transmission module for real-time wireless transmission so as to meet the requirements of expert consultation or remote diagnosis and the like.

The present invention is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical matters of the present invention can be made by those skilled in the art without departing from the scope of the present invention.

Claims

1. The multifunctional double infrared vascular imaging instrument includes one portable casing with power source module, image collecting module, double infrared light source module, operation processing module and projection module, and one radio transmission module inside the casing,

the power supply module supplies power to other modules;

the output end of the image acquisition module is connected with the input end of the operation processing module, and the output end of the operation processing module is respectively connected with the projection module and the wireless transmission module;

the double-infrared light source module consists of an 850nm wavelength LED lamp and a 940nm wavelength LED lamp, and the back of the portable shell is provided with a shooting and projecting hole, an 850nm light source projecting hole and a 940nm light source projecting hole correspondingly;

the image acquisition module comprises an infrared CMOS sensor and a band-pass filter arranged in front of the infrared CMOS sensor;

the operation processing module comprises an image preprocessing sub-module, a self-calibration sub-module, an adaptive filtering sub-module, a morphological enhancer module and a color conversion sub-module which are connected in sequence;

the multifunctional double-infrared blood vessel imaging instrument is used for imaging blood vessels according to the following steps:

SS1, an 850nm wavelength LED lamp and a 940nm wavelength LED lamp of a double infrared light source module emit infrared light to skin to be detected simultaneously;

the SS2, the image acquisition module acquires and receives the image of the skin to be detected irradiated by the infrared light and transmits the image to the operation processing module, and the processing process of the operation processing module comprises the following substeps:

b) The self-calibration sub-module is utilized to identify the mark pattern projected on the calibration plate by placing the calibration plate in a projection working area, automatically detect errors and adjust the image projection position according to the errors;

c) The self-adaptive filtering submodule is utilized to strengthen continuous strip-shaped region graphics similar to blood vessel graphics in the local image and weaken other region images so as to further improve the contrast and quality of the blood vessel images;

d) The morphological enhancement submodule is used for processing the image by adopting morphological operation, and on the premise of not increasing the range of the blood vessel image, the non-uniform discontinuous region in the image is intelligently filled so as to further enhance the quality of the image;

and SS3, outputting the processed image to a projection module and a wireless transmission module by an operation processing module, projecting the image to a projection area of skin to be detected by the projection module, and transmitting the image to other equipment by the wireless transmission module.

2. The dual infrared imaging apparatus of claim 1, wherein the projection module uses DLP projection.

3. The multifunctional dual infrared angioscope of claim 1, wherein the front of the portable housing is provided with an indicator light and a switch button, wherein the indicator light comprises a power indicator light (1), a CPU indicator light (2) and a heating indicator light (3), and the switch button comprises a self-calibration switch (4), a start-stop switch (5), an operating state switch (6) and a wireless transmission switch (7).

4. The multifunctional dual infrared angiogram according to claim 1, wherein the portable housing is composed of two mutually buckled housings, and the middle of the housing constituting the back of the housing is provided with a groove (11).

5. The dual infrared imaging apparatus of claim 1, further comprising a fixing bracket having a fixing slot thereon for mating with the portable housing.

6. A method of imaging a multifunctional dual infrared vessel imaging apparatus as defined in claim 1, comprising the steps of: