Intelligent portable blood vessel detector and use method

Abstract

The invention discloses an intelligent portable blood vessel detector and a use method, and relates to the technical field of blood vessel detection equipment, the intelligent portable blood vessel detector comprises a shell, a detection head, a display screen and a wrist strap, a main control chip and a power supply are arranged in the shell, the detection head is movably arranged on the shell, the main control chip is electrically connected with the detection head, and the display screen is electrically connected with the wrist strap. A polarization filter, a beam splitter prism, a multispectral CMOS sensor, a laser projector and a linear motor are arranged in the detection head, the display screen is arranged on the shell, and the wrist strap is arranged on the shell. When blood sampling is carried out on a patient, the puncture needle can help a worker to improve the success rate during puncture, and therefore the working time is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of blood vessel detection equipment, and in particular to an intelligent portable blood vessel detector and a use method thereof. Background Art

[0002] Clinically, most patients have poor vascular conditions. Even if medical staff have superb puncture techniques, it is sometimes difficult to find suitable blood vessels for puncture. Whether it is venous blood collection or venous puncture, there will be difficulties, and it will consume a lot of time and manpower. At the same time, night shift nurses usually draw more venous blood, and there is a shortage of manpower, which wastes a lot of time and makes the work difficult. If medical staff can improve the puncture success rate, it can improve the satisfaction of patients and their families, and reduce conflicts between doctors and patients. If they are rescuing patients, they can also improve the puncture success rate and buy more time for rescue. Existing limitations are:

[0003] 1. In the pediatric department: There are many pediatric patients now, and most of them need intravenous puncture or blood drawing. However, the vascular conditions are poor, and most children do not cooperate. Family members will also intervene and worry too much, putting invisible pressure on medical staff. It is difficult for medical staff to find blood vessels, and the success rate of puncture is low, which easily leads to unnecessary conflicts and disputes.

[0004] 2. Oncology Department: Most cancer patients are in poor nutritional status and are emaciated. At the same time, the use of chemotherapy drugs during treatment often stimulates blood vessels, which can damage the patients' blood vessels. Multiple punctures can lead to vascular malformations and damage, making it difficult to puncture again, greatly reducing the success rate and the satisfaction of patients and their families.

[0005] 3. Female patients: Most female patients are anemic and some are obese. Currently, many patients still use indwelling needles for fluid replacement therapy. However, due to poor vascular conditions, successful puncture cannot be performed in one go, which requires a lot of time and effort.

[0006] 4. Night shift work: The patient's condition changes at any time, and timely blood sampling or establishment of intravenous access is required for timely treatment. Due to the influence of the condition, it is more difficult to find blood vessels. At the same time, due to the weak human resources for night shift work, a lot of time and energy will be consumed to find blood vessels, delaying treatment time, and the pressure of night shift work will also increase dramatically. Summary of the Invention

[0007] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide an intelligent portable blood vessel detector and a method of use, which can help workers improve the success rate of puncture when drawing blood, thereby improving work efficiency.

[0008] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0009] A first aspect of the present invention provides an intelligent portable blood vessel detector, comprising:

[0010] A housing in which a main control chip and a power supply are disposed;

[0011] A detection head, wherein the detection head is movably disposed on the housing, the main control chip is electrically connected to the detection head, and the detection head comprises a polarization filter, a beam splitter prism, a multi-spectral CMOS sensor, a laser projector, and a linear motor;

[0012] The display screen is arranged on a shell, the shell is provided with an inclined surface, and the display screen is arranged on the inclined surface; the setting of the inclined surface is convenient for users to observe.

[0013] A wristband is arranged on the housing.

[0014] On the other hand, a method of use is provided, comprising the following steps:

[0015] 1. Press and hold the power button for 3 seconds to start the device. The OLED screen will display the startup animation.

[0016] 2. Fix the wrist strap to the wrist of the non-operating hand and rotate the detection head to an angle of 15-30°;

[0017] 3. Gently touch the probe to the surface of the skin to be tested, and slowly move the device (speed < 5 cm / s), keeping a distance of 3-5 mm from the skin;

[0018] 4. Vibration provides real-time feedback on the location of vascular distribution areas; the screen then displays a vascular topology map;

[0019] 5. Adjust the device to enter puncture assistance mode. The device automatically marks the optimal puncture point and displays the depth of the blood vessel through laser projection of a red cross. The vibration frequency increases as it approaches the target point.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] In actual use, when drawing blood from a patient, the present invention can help staff improve the success rate of puncture, thereby helping staff save working time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Parts names and reference numbers:

[0024] 1- Wristband, 2- Housing, 3- Detection head, 4- Display screen. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, this should not be understood as limiting the scope of the present invention to the following embodiments, and all technologies implemented based on the present invention fall within the scope of the present invention.

[0026] This embodiment provides an intelligent portable blood vessel detector, such as Figure 1 As shown, including:

[0027] Housing 2, housing a main control chip and a power supply;

[0028] The detection head 3 is movably mounted on the housing 2. The main control chip is electrically connected to the detection head. The detection head 3 includes a polarization filter, a beam splitter prism, a multi-spectral CMOS sensor, a laser projector, and a linear motor.

[0029] Display screen 4, which is arranged on the housing 2;

[0030] The wristband 1 is arranged on the housing 2. The wristband can be connected in a buckle manner.

[0031] In actual use, when drawing blood from a patient, the present invention can help staff improve the success rate of puncture, thereby helping staff save working time.

[0032] This embodiment also provides a method of use, including the following steps:

[0033] 1. Press and hold the power button for 3 seconds to start the device. The OLED screen will display the startup animation.

[0034] 2. Fix the wrist strap to the wrist of the non-operating hand and rotate the detection head to an angle of 15-30°;

[0035] 3. Gently touch the probe to the surface of the skin to be tested, and slowly move the device (speed < 5 cm / s), keeping a distance of 3-5 mm from the skin;

[0036] 4. Vibration provides real-time feedback on the location of vascular distribution areas; the screen then displays a vascular topology map;

[0037] 5. Double-click the knob to enter the puncture assistance mode. The device automatically marks the optimal puncture point and displays the blood vessel depth through laser projection of a red cross. The vibration frequency increases as it approaches the target point.

[0038] This embodiment further provides a blood vessel detection method, which is implemented based on the above-mentioned intelligent portable blood vessel detector and includes the following steps:

[0039] S1, using the probe to collect dual-channel original images, pressure data, and IMU data at the skin to be punctured;

[0040] S2. Correcting the collected dual-channel original images, pressure data, and IMU data;

[0041] S3, performing blood vessel segmentation, blood vessel depth estimation, and three-dimensional coordinate mapping;

[0042] S4. Map out the appropriate puncture point.

[0043] Specifically:

[0044] 1. Signal acquisition stage

[0045] 1. Multispectral Imaging

[0046] step:

[0047] 1.850nm / 530nm LEDs light up alternately (duty cycle 1:1, frequency 15Hz)

[0048] 2. CMOS sensor captures dual-channel images (exposure time 0.5ms)

[0049] formula:

[0050] Original signal:

[0051]

[0052] 2. Pressure sensing

[0053] step:

[0054] The 3×3 piezoresistive array samples the pressure and converts it into a digital pressure value via the ADC.

[0055] formula:

[0056] Pressure calibration:

[0057]

[0058] (i=1~9, V_min / max is the calibration parameter)

[0059] 3. Motion perception

[0060] step:

[0061] IMU outputs angular velocity ω and acceleration a

[0062] formula:

[0063] Attitude solution (quaternion update):

[0064]

[0065] Second, preprocessing stage

[0066] 1. Optical pretreatment

[0067] step:

[0068] 1.1 Dark current elimination:

[0069]

[0070] 1.2 Multispectral Registration (Affine Transformation):

[0071]

[0072] 2. Blood vessel enhancement

[0073] step

[0074] Calculate the vascular contrast index:

[0075]

[0076] 3. Pressure Field Reconstruction

[0077] step:

[0078] Bicubic interpolation generates a continuous pressure distribution:

[0079]

[0080] 3. Core Analysis Phase

[0081] 1. Blood vessel segmentation

[0082] step:

[0083] CNN Inference

[0084] Output probability map:

[0085]

[0086] (σ is the Sigmoid function, * represents convolution)

[0087] 2. Depth Estimation

[0088] step:

[0089] Fusion of pressure and optical data

[0090]

[0091] 3. 3D coordinate mapping

[0092] step:

[0093] Skin coordinate system-projection coordinate system:

[0094]

[0095] 4. Decision output stage 1. Puncture point selection

[0096] step:

[0097] Optimization objective function:

[0098]

[0099] 2. Laser control

[0100] step:

[0101] MEMS micromirror deflection angle calculation:

[0102]

[0103] 3. Haptic feedback

[0104] step:

[0105] Vibration intensity mapping:

[0106]

[0107] 5. Performance Verification Formula

[0108] 1. Positioning accuracy

[0109]

[0110] (US is the gold standard for ultrasound)

[0111] 2. Signal-to-noise ratio

[0112]

[0113] 3. Real-time

[0114]

[0115] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An intelligent portable blood vessel detector, characterized in that: include: A housing (2), wherein a main control chip and a power supply are arranged in the housing (2); A detection head (3), wherein the detection head (3) is movably arranged on the housing (2), the main control chip is electrically connected to the detection head (3), and the detection head (3) has a polarization filter, a beam splitter prism, a multi-spectral CMOS sensor, a laser projector, and a linear motor; A display screen (4), wherein the display screen (4) is arranged on the housing (2); A wristband (1) is provided on a housing (2).

2. A method of use, implemented based on the intelligent portable blood vessel detector according to claim 1, characterized in that: The steps include: 1). Press and hold the power button for 3 seconds to start the device. The screen will show the startup animation. 2) Fix the wrist strap to the wrist of the non-operating hand and rotate the detection head to an angle of 15-30°; 3) Gently touch the probe to the skin surface to be tested, and slowly move the device at a speed lower than 5cm / s, keeping a distance of 3-5mm from the skin; 4) Vibration provides real-time feedback on the location of the blood vessel distribution area; the screen then displays the blood vessel topology. 5) Adjust the device to enter puncture assistance mode. The device automatically marks the optimal puncture point and displays the depth of the blood vessel through laser projection of a red cross. The vibration frequency increases as it approaches the target point.

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