A device for non-invasively visualizing blood flow, curvature and diameter of radial artery

Abstract

The present invention relates to the technical field of non-invasive radial artery visualization devices, and in particular to a device for non-invasive visualization of the blood flow, curvature and diameter of the radial artery. The technical solution includes: a chassis, in which an OCT scanner and a fixing sleeve for fixing the arm are installed, and an imaging auxiliary component installed inside the chassis, and the imaging auxiliary component drives the OCT scanner to move synchronously with the fixing sleeve when the fixing sleeve moves. The present invention uses the fixing sleeve to assist in fixing the hand, and through the imaging auxiliary component, when the hand moves, the moving hand can drive the OCT scanner to move synchronously, so that the OCT scanner and the arm remain relatively still, preventing image blur or distortion, and effectively improving the quality of imaging.

Description

Technical Field

[0001] The invention relates to the technical field of non-invasive radial artery visualization devices, and in particular to a device for non-invasively visualizing the blood flow, curvature and diameter of the radial artery. Background Art

[0002] The radial artery is one of the main arteries in the upper limb of the human body. It is located on the radial side of the forearm, that is, the inner side of the forearm. The radial artery is a common site for arterial catheterization and blood sampling, especially in intensive care and surgery. And by observing the pulsation and morphology of the radial artery, it can assist in the diagnosis of certain cardiovascular diseases. Optical coherence tomography (OCT) technology can be used for scanning and imaging of the radial artery. The high-resolution characteristics of OCT enable it to clearly image the structure of the arterial wall, including the intima, media, and adventitia. This technology has potential application value in evaluating atherosclerosis, detecting early arterial lesions, and studying vascular biology.

[0003] However, patient movement during the test may cause the image to be blurred or distorted, affecting the accuracy of the 3D reconstruction. For example, infants, the elderly, or patients with cognitive impairments may not understand or follow instructions to stay still. And certain diseases, such as Parkinson's disease, tremors, or other movement disorders, may cause patients to shake or move uncontrollably. Summary of the invention

[0004] The purpose of the present invention is to address the problems existing in the background technology and to provide a device for non-invasively visualizing the blood flow, curvature and diameter of the radial artery.

[0005] The technical solution of the present invention is a device for non-invasively visualizing the blood flow, curvature and diameter of the radial artery, comprising a chassis, in which an OCT scanner and a fixing sleeve for fixing the arm are installed, and further comprising:

[0006] An imaging auxiliary component is installed inside the chassis, and the imaging auxiliary component drives the OCT scanner and the fixed sleeve to move synchronously when the fixed sleeve moves. The imaging auxiliary component includes a first detection mechanism for detecting the lateral and vertical movement of the fixed sleeve, a second detection mechanism for detecting the flipping movement of the fixed sleeve with the arm, a first driving mechanism for driving the OCT scanner to move lateral and vertically, and a second driving mechanism for driving the OCT scanner to flip.

[0007] Optionally, the fixing sleeve includes two groups of connecting rings, one group of connecting rings includes two arc-shaped plates, and a binding strap is provided between the two arc-shaped plates.

[0008] Optionally, the first detection mechanism includes two groups of support frames fixedly installed in the chassis, the two groups of support frames are displaced on both sides of the chassis, one group of support frames includes two slides, a slider is slidably installed in the slide, springs are fixedly installed on both sides of the slider, the other end of the spring is fixedly connected to the slide, a support tube is fixedly installed on the slider, the two groups of connecting rings correspond one-to-one to the two groups of support frames, the connecting ring is located between the two support tubes on the same group, and are connected through the second detection mechanism.

[0009] Optionally, the first detection mechanism also includes two first displacement sensors and two second displacement sensors slidably installed in the chassis, and the detection axes of the second displacement sensors are respectively fixedly connected to one of the sliding blocks inside the two groups of support frames, and the sliding blocks are provided with connecting grooves.

[0010] Optionally, the second detection mechanism includes a sliding rod slidably installed inside the supporting tube, a connecting block is fixedly installed on the sliding rod, two third displacement sensors are rotatably installed on the connecting block, the detection axis of the third displacement sensor is rotatably connected to the arc plate, and the detection axis of the first displacement sensor is fixedly connected to the sliding rod.

[0011] Optionally, a base plate is slidably installed in the chassis, a first push rod motor is fixedly installed in the chassis, and an output shaft of the first push rod motor is fixedly connected to the base plate.

[0012] Optionally, four slides are fixedly mounted on the base plate, a driving block is slidably mounted in the slide, a support sleeve is fixedly mounted on the driving block, a square rod is slidably mounted in the support sleeve, a transmission block is connected between two square rods on the same side through a second driving mechanism, and power components for driving the OCT scanner to move are installed on the two transmission blocks.

[0013] Optionally, the power assembly is fixedly mounted on a guide rod between the two transmission blocks, a lead screw is rotatably mounted between the two transmission blocks, a guide block is threadedly connected to the lead screw, the guide block is slidingly connected to the guide rod, the OCT scanner is fixedly connected to the guide block, a motor is fixedly mounted on one of the transmission blocks, and the output shaft of the motor is coaxially and fixedly connected to the lead screw.

[0014] Optionally, the first driving mechanism includes two second push rod motors and two third push rod motors slidably installed in the chassis, the output shafts of the two second push rod motors and the two third push rod motors are respectively fixedly connected to the two driving blocks, and the slide is provided with a notch.

[0015] Optionally, the second driving mechanism includes a mounting plate fixedly mounted on the square rod, and two fourth push rod motors are rotatably mounted on the mounting plate. The output shafts of the fourth push rod motors are rotatably connected to the transmission block, and the transmission block is located between two adjacent mounting plates.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] The present invention uses a fixing sleeve to assist in fixing the hand, and uses an imaging auxiliary component so that when the hand moves, the moving hand can drive the OCT scanner to move synchronously, so that the OCT scanner and the arm remain relatively still, preventing image blur or distortion, and effectively improving the quality of imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A structural schematic diagram of the chassis of the present invention is provided;

[0019] Figure 2 The structure of the internal chassis of the present invention is schematically shown Figure 1 ;

[0020] Figure 3 The structure of the internal chassis of the present invention is schematically shown Figure 2 ;

[0021] Figure 4 A structural schematic diagram of the fixed sleeve is given;

[0022] Figure 5 The structure diagram of the first detection mechanism of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 6 The structure diagram of the first detection mechanism of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 7 for Figure 5 A partial enlarged view of the middle A;

[0025] Figure 8 The structure of the power assembly of the present invention is shown in FIG. Figure 1 ;

[0026] Fig. 9 The structure of the power assembly of the present invention is shown in FIG. Figure 2 ;

[0027] Fig.10 The structure diagram of the first driving mechanism is given as follows: Figure 1 ;

[0028] Fig.11 The structure diagram of the first driving mechanism is given as follows: Figure 2 ;

[0029] Fig.12 for Fig.10 A partial enlarged view of point B in the middle;

[0030] Fig.13 This is the flow chart of the control system of this device.

[0031] 1. Chassis; 2. OCT scanner; 3. Fixing sleeve; 301. Arc plate; 302. Binding strap; 4. Slide plate; 401. Sliding block; 402. Spring; 403. Support tube; 404. First displacement sensor; 405. Second displacement sensor; 406. Connecting groove; 407. Sliding rod; 408. Connecting block; 409. Third displacement sensor; 5. Base plate; 501. First push rod motor; 6. Slideway; 601. Driving block; 602. Support sleeve; 603. Square rod; 604. Transmission block; 605. Guide rod; 606. Screw rod; 607. Guide block; 608. Motor; 7. Second push rod motor; 701. Third push rod motor; 702. Notch; 703. Mounting plate; 704. Fourth push rod motor. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] Examples, such as Figure 1 to Figure 2 As shown, the present invention proposes a non-invasive device for visualizing blood flow, curvature and diameter of radial artery, comprising a case 1, in which an OCT scanner 2 and a fixing sleeve 3 for fixing an arm are installed, and the fixing sleeve 3 comprises two groups of connecting rings, one group of connecting rings comprises two arc plates 301, and a strap 302 is provided between the two arc plates 301. The arm can be fixedly connected to the fixing sleeve 3 by passing the arm through the two groups of connecting rings and tightening the arc plates 301 on both sides by the strap. Velcro is provided on the strap, and the tightness can be freely adjusted to suit people of different body shapes. When the fixation is completed, the movement of the arm will drive the fixing sleeve 3 to move, and the arm can be scanned by the OCT scanner 2.

[0034] Among them, a base plate 5 is slidably installed in the chassis 1, a first push rod motor 501 is fixedly installed in the chassis 1, and the output shaft of the first push rod motor 501 is fixedly connected to the base plate 5. Four slideways 6 are fixedly installed on the base plate 5, a driving block 601 is slidably installed in the slideway 6, a support sleeve 602 is fixedly installed on the driving block 601, a square rod 603 is slidably installed in the support sleeve 602, a transmission block 604 is connected between two square rods 603 on the same side of displacement, and a power assembly for driving the OCT scanner 2 to move is installed on the two transmission blocks 604. Under the action of the first push rod motor 501, the base plate 5 can be driven to move up and down, and the base plate 5 that moves up and down can push the assembly to move up and down, and the OCT scanner 2 can be moved up and down through the transmission of the power assembly, and then the distance between the OCT scanner 2 and the arm can be adjusted, which is convenient for adjusting the molding effect.

[0035] Furthermore, the power assembly is fixedly mounted on the guide rod 605 between the two transmission blocks 604, a screw rod 606 is rotatably mounted between the two transmission blocks 604, a guide block 607 is threadedly connected to the screw rod 606, the guide block 607 is slidably connected to the guide rod 605, the OCT scanner 2 is fixedly connected to the guide block 607, a motor 608 is fixedly mounted on one of the transmission blocks 604, and the output shaft of the motor 608 is coaxially fixedly connected to the screw rod 606. By starting the motor 608 to drive the screw rod 606 to rotate, the rotating screw rod 606 can drive the guide block 607 to move along the axis of the guide rod 605, and then drive the OCT scanner 2 to move along the arm, and then scan and image the radial artery.

[0036] The present embodiment also includes an imaging auxiliary component installed inside the chassis 1. The imaging auxiliary component drives the OCT scanner 2 to move synchronously with the fixed sleeve 3 when the fixed sleeve 3 moves. The imaging auxiliary component includes a first detection mechanism for detecting the lateral and vertical movement of the fixed sleeve 3, a second detection mechanism for detecting the movement of the fixed sleeve 3 as the arm flips, a first driving mechanism for driving the OCT scanner 2 to move lateral and vertically, and a second driving mechanism for driving the OCT scanner 2 to flip. The device is provided with a control system. The control system receives the detection data of the first detection mechanism to control the first driving mechanism, and receives the detection data of the second detection mechanism to control the second driving mechanism. Through the mutual cooperation of the first detection mechanism and the first driving mechanism, the second detection mechanism and the second driving mechanism, the OCT scanner 2 can be driven to move when the arm moves, and the movement amplitude remains equal, so that the OCT scanner 2 and the arm are always in relative stillness, which can effectively improve the quality of molding.

[0037] Among them, the first detection mechanism includes two groups of support frames fixedly installed in the chassis 1, the two groups of support frames are located on both sides of the chassis 1, one group of support frames includes two slide plates 4, a slider 401 is slidably installed in the slide plate 4, springs 402 are fixedly installed on both sides of the slider 401, the other end of the spring 402 is fixedly connected to the slide plate 4, a support cylinder 403 is fixedly installed on the slider 401, two groups of connecting rings correspond to the two groups of support frames one by one, the connecting ring is located between the two support cylinders 403 on the same group, and connected through the second detection mechanism. The first detection mechanism also includes two first displacement sensors 404 and two second displacement sensors 405 slidably installed in the chassis 1, the detection axis of the second displacement sensor 405 is fixedly connected to one of the sliders 401 inside the two groups of support frames, the slide plate 4 is provided with a connecting groove 406, and the detection axis of the first displacement sensor 404 is fixedly connected to the slide bar 407.

[0038] When the arm moves, it will drive the fixed sleeve 3 to move, and the movement of the fixed sleeve 3 will drive the detection axis of the second displacement sensor 405 to move. At this time, the first displacement sensor 404 will move along the axial direction of the second displacement sensor 405. The arm can also drive the sliding bar 407 to move, and the moving sliding bar 407 will drive the detection axis of the first displacement sensor 404 to move. At this time, the second displacement sensor 405 will move along the axial direction of the first displacement sensor 404, and the first displacement sensor 404 and the second displacement sensor 405 can move synchronously. One end of the arm can be decomposed into movement along the axial directions of the first displacement sensor 404 and the second displacement sensor 405. By transmitting the displacement data of the arm detected by the first displacement sensor 404 and the second displacement sensor 405 to the control system, the OCT scanner 2 and the arm can be controlled to move synchronously through the first driving mechanism and the second driving mechanism.

[0039] Furthermore, the first driving mechanism includes two second push rod motors 7 and two third push rod motors 701 slidably mounted in the chassis 1, and the output shafts of the two second push rod motors 7 and the two third push rod motors 701 are respectively fixedly connected to the two driving blocks 601, and a notch 702 is provided on the slideway 6. The second push rod motor 7 and the third push rod motor 701 are controlled by the control system to move, so that the transmission block 604 can be driven to move, and the moving transmission block 604 can drive the OCT scanner 2 to move, so that the OCT scanner 2 can keep moving synchronously with the hand.

[0040] In this embodiment, the second detection mechanism includes a slide bar 407 slidably mounted inside the support tube 403, a connection block 408 fixedly mounted on the slide bar 407, two third displacement sensors 409 rotatably mounted on the connection block 408, and the detection axis of the third displacement sensor 409 is rotatably connected to the arc plate 301. In the detection process, the arm is prone to horizontal and vertical movement, and may also flip along the joint. When the arm flips, it will drive the arc plate 301 to move, and the moving arc plate 301 will drive the detection axis of the third displacement sensor 409 to extend and retract while rotating. At this time, the control system receives the data of the third displacement sensor 409 to control the second drive mechanism to adjust the flipping posture of the OCT scanner 2.

[0041] The second driving mechanism includes a mounting plate 703 fixedly mounted on the square rod 603, two fourth push rod motors 704 are rotatably mounted on the mounting plate 703, and the output shaft of the fourth push rod motor 704 is rotatably connected to the transmission block 604, and the transmission block 604 is located between two adjacent mounting plates 703. When the indication of the third displacement sensor 409 changes, the control system will control the fourth push rod motor 704 to move, and when the fourth push rod motor 704 is extended and retracted, it will push the transmission block 604 to rotate, and the rotating transmission block 604 will drive the OCT scanner 2 to flip, so that the OCT scanner 2 and the radial artery are always in a relatively static state, which can effectively improve the imaging effect while ensuring the patient's comfort.

[0042] Working principle: The arm can be fixedly connected to the fixing sleeve 3 by passing the arm through two sets of connecting rings and tightening the arc plates 301 on both sides by straps. After the fixation is completed, the movement of the arm will drive the fixing sleeve 3 to move, and the arm can be scanned by the OCT scanner 2.

[0043] When the arm moves, it will drive the fixed sleeve 3 to move, and the movement of the fixed sleeve 3 will drive the detection axis of the second displacement sensor 405 to move. The arm can also drive the sliding bar 407 to move, and the moving sliding bar 407 will drive the detection axis of the first displacement sensor 404 to move, and the first displacement sensor 404 and the second displacement sensor 405 can move synchronously. By transmitting the displacement data of the arm detected by the first displacement sensor 404 and the second displacement sensor 405 to the control system, and controlling the second push rod motor 7 and the third push rod motor 701 to move through the control system, the transmission block 604 can be driven to move, and the moving transmission block 604 can drive the OCT scanner 2 to move, so that the OCT scanner 2 can keep moving synchronously with the hand.

[0044] When the arm flips, it will drive the arc plate 301 to move, and the moving arc plate 301 will drive the detection axis of the third displacement sensor 409 to extend and retract while rotating. At this time, the control system receives data from the third displacement sensor 409, and when the indication of the third displacement sensor 409 changes, the control system will control the fourth push rod motor 704 to move. When the fourth push rod motor 704 is extending and retracting, it will push the transmission block 604 to rotate, and the rotating transmission block 604 will drive the OCT scanner 2 to flip, thereby making the OCT scanner 2 and the radial artery always in a relatively static state, which can effectively improve the imaging effect while ensuring the patient's comfort.

[0045] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A device for non-invasively visualizing blood flow, curvature and diameter of a radial artery, comprising a case (1), wherein an OCT scanner (2) and a fixing sleeve (3) for fixing an arm are installed in the case (1), characterized in that: Also includes: An imaging auxiliary component installed inside the chassis (1), the imaging auxiliary component driving the OCT scanner (2) and the fixed sleeve (3) to move synchronously when the fixed sleeve (3) moves, the imaging auxiliary component comprising a first detection mechanism for detecting the lateral and vertical movement of the fixed sleeve (3), a second detection mechanism for detecting the movement of the fixed sleeve (3) as the arm flips, a first driving mechanism for driving the OCT scanner (2) to move lateral and vertically, and a second driving mechanism for driving the OCT scanner (2) to flip; The fixing sleeve (3) comprises two groups of connecting rings, one group of connecting rings comprises two arc-shaped plates (301), and a binding belt (302) is provided between the two arc-shaped plates (301); The first detection mechanism comprises two groups of support frames fixedly mounted in the chassis (1), the two groups of support frames being located on both sides of the chassis (1), one group of support frames comprising two slide plates (4), a slider (401) being slidably mounted in the slide plate (4), springs (402) being fixedly mounted on both sides of the slider (401), the other end of the spring (402) being fixedly connected to the slide plate (4), a support tube (403) being fixedly mounted on the slider (401), the two groups of connecting rings corresponding to the two groups of support frames one by one, the connecting ring being located between the two support tubes (403) on the same group, and being connected via the second detection mechanism.

2. The device for non-invasively visualizing blood flow, curvature and diameter of radial artery according to claim 1, characterized in that: The first detection mechanism further comprises two first displacement sensors (404) and two second displacement sensors (405) slidably mounted in the chassis (1); the detection axes of the second displacement sensors (405) are respectively fixedly connected to one of the sliders (401) inside the two groups of support frames; and the slide plate (4) is provided with a connection groove (406).

3. The device for non-invasively visualizing blood flow, curvature and diameter of radial artery according to claim 2, characterized in that: The second detection mechanism comprises a slide bar (407) slidably mounted inside the support tube (403); a connection block (408) is fixedly mounted on the slide bar (407); two third displacement sensors (409) are rotatably mounted on the connection block (408); a detection axis of the third displacement sensor (409) is rotatably connected to the arc plate (301); and a detection axis of the first displacement sensor (404) is fixedly connected to the slide bar (407).

4. The device for non-invasively visualizing blood flow, curvature and diameter of radial artery according to claim 3, characterized in that: A base plate (5) is slidably mounted in the chassis (1), a first push rod motor (501) is fixedly mounted in the chassis (1), and an output shaft of the first push rod motor (501) is fixedly connected to the base plate (5).

5. The device for non-invasively visualizing blood flow, curvature and diameter of radial artery according to claim 4, characterized in that: Four slideways (6) are fixedly mounted on the base plate (5), a driving block (601) is slidably mounted in the slideways (6), a supporting sleeve (602) is fixedly mounted on the driving block (601), a square rod (603) is slidably mounted in the supporting sleeve (602), a transmission block (604) is connected between two square rods (603) located on the same side via a second driving mechanism, and a power assembly for driving the OCT scanner (2) to move is mounted on the two transmission blocks (604).

6. The device for non-invasively visualizing blood flow, curvature and diameter of radial artery according to claim 5, characterized in that: The power assembly is fixedly mounted on a guide rod (605) between the two transmission blocks (604); a lead screw (606) is rotatably mounted between the two transmission blocks (604); a guide block (607) is threadedly connected to the lead screw (606); the guide block (607) is slidably connected to the guide rod (605); the OCT scanner (2) is fixedly connected to the guide block (607); a motor (608) is fixedly mounted on one of the transmission blocks (604); and an output shaft of the motor (608) is coaxially fixedly connected to the lead screw (606).

7. The device for non-invasively visualizing blood flow, curvature and diameter of radial artery according to claim 6, characterized in that: The first driving mechanism comprises two second push rod motors (7) and two third push rod motors (701) slidably mounted in the chassis (1); the output shafts of the two second push rod motors (7) and the two third push rod motors (701) are respectively fixedly connected to the two driving blocks (601); and the slideway (6) is provided with a notch (702).

8. The device for non-invasively visualizing blood flow, curvature and diameter of radial artery according to claim 7, characterized in that: The second driving mechanism comprises a mounting plate (703) fixedly mounted on the square rod (603), two fourth push rod motors (704) being rotatably mounted on the mounting plate (703), the output shafts of the fourth push rod motors (704) being rotatably connected to the transmission block (604), and the transmission block (604) being located between two adjacent mounting plates (703).

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