A fundus camera positioning aid

Abstract

The application relates to the technical field of contrast auxiliary devices, and discloses an eye fundus imaging device positioning auxiliary device which comprises a supporting base, a guide rod is fixedly installed at the top of the supporting base, a rotating shaft three is driven to rotate through a rotating knob, the rotating shaft three drives an umbrella-shaped tooth two to mesh with a conical tooth two to rotate, the rotating shaft two, the conical tooth one and the umbrella-shaped tooth one are matched with synchronous transmission, power is transmitted to a rotating shaft one, a convex connecting pin is lapped through electromagnetic coil magnetization iron core adsorption, then the double worm gears synchronously mesh with the worm wheel to drive the transmission screw rod, so that the different patient height adaptation requirements are realized, secondly, the rotating knob is matched with another group of electromagnetic coil magnetization iron core adsorption convex connecting pin lapping, the fixed shaft and the gear are driven to rotate, the gear meshes with the rack to drive the inclined block two to slide, the arc-shaped supporting plate is pushed to adjust the posture, then the eye fundus imaging eye position is matched, so that the cumbersome process of multiple operation piece switching is avoided, and the demand of multiple eye position examination is met.

Description

Technical Field

[0001] This invention relates to the field of angiography auxiliary devices, specifically to a positioning auxiliary device for a fundus angiography system. Background Technology

[0002] Fundus angiography is an important means of diagnosing eye diseases. It requires a high degree of accuracy and stability in patient head positioning, ensuring that the patient's eyes are precisely aligned with the angiography camera lens, and is adaptable to different patient heights and various eye positions.

[0003] Existing fundus angiography positioning aids typically employ a multi-part, separate operation, requiring adjustment through different knobs and handles. This cumbersome process necessitates repeated switching of operating parts to calibrate their positions, potentially prolonging preoperative preparation time. Furthermore, operational errors can easily lead to positioning deviations, affecting the angiography results. Therefore, we have developed a fundus angiography positioning aid. Summary of the Invention

[0004] This invention provides a positioning aid for a fundus angiography system, which solves the problems mentioned in the background art.

[0005] This invention provides the following technical solution: a positioning auxiliary device for a fundus angiography instrument, comprising a support base, a guide rod fixedly installed on the top of the support base, an adjustment and switching component provided in the inner cavity of the support base, a fixed rod slidably connected to the side wall of the guide rod, a flexible adaptive clamping component provided on the top of the fixed rod, a power supply, a signal receiver, a controller, and a current regulator respectively installed on the inner wall of the support base, a guide box one fixedly installed on the inner wall of the support base, a transmission screw rotatably connected to the inner wall of the guide rod, a corrugated dust cover one provided on the top of the fixed rod, a corrugated dust cover two provided on the bottom of the fixed rod, an operation panel installed on the top of the support base, and scale lines provided on the side wall of the guide rod.

[0006] As a preferred embodiment of the present invention: the adjustment and switching assembly includes a first rotating shaft, a worm gear, a worm wheel, a second rotating shaft, a third rotating shaft, a fixed shaft, a socket, a hinge block, and a second inclined block. The inner wall of the first rotating shaft has a circular groove and a slot. An electromagnetic coil is installed inside the cavity of the first circular groove. A magnetically conductive outer shell is fixedly installed on the inner wall of the electromagnetic coil. An iron core is installed on the inner wall of the magnetically conductive outer shell. The inner wall of the worm gear has a circular groove, and the inner wall of the second circular groove has a sliding groove. A convex connecting pin is slidably connected to the inner wall of the second circular groove, and the outer wall of the convex connecting pin is provided with a spring. The spring has an umbrella-shaped tooth fixedly sleeved on the outer wall of the first rotating shaft, a conical tooth fixedly sleeved on the outer wall of the second rotating shaft, a conical tooth fixedly sleeved at the end of the second rotating shaft away from the conical tooth, an umbrella-shaped tooth fixedly sleeved at the bottom of the third rotating shaft, a knob fixedly sleeved at the top of the third rotating shaft, a gear fixedly sleeved on the outer wall of the fixed shaft, an arc-shaped support plate at the top of the socket, a connecting rod rotatably connected to the outer wall of the hinge block, a connecting rod slidably connected to the inner wall of the connecting rod 1, a wedge block 1 fixedly installed at the bottom of the connecting rod 2, and a rack fixedly installed on the outer wall of the wedge block 2.

[0007] As a preferred technical solution of the present invention: the first rotating shaft, the second rotating shaft, the third rotating shaft, and the fixed shaft are rotatably connected to the inner wall of the support base. The electromagnetic coil is electrically connected to the power supply. One end of the slot corresponds to the convex connecting pin, and the other end of the slot corresponds to the iron core. The outer wall of the convex connecting pin is slidably fitted to the inner wall of the slide groove. The spring is located in the inner cavity of the second circular slot, and one end of the spring overlaps with the outer wall of the convex connecting pin, and the other end of the spring overlaps with the inner wall of the second circular slot. The outer wall of the convex connecting pin is adapted to the shape of the inner wall of the slot. The first circular slot, the electromagnetic coil, the magnetic shell, the iron core, and the slot are considered as a set of movable components, and there are two sets of such movable components, which are respectively set in the inner cavities of the first rotating shaft and the third rotating shaft. The second circular slot, the slide groove, the convex connecting pin, and the spring are considered as a set of movable components, and there are two sets of such movable components, which are respectively set in the inner cavities of the worm gear and the first circular slot.

[0008] As a preferred technical solution of the present invention: the outer edge of the second umbrella-shaped tooth meshes with the outer edge of the second conical tooth, the outer edge of the first conical tooth meshes with the outer edge of the first umbrella-shaped tooth, the worm gear is fixedly sleeved on the bottom of the transmission screw, the outer edge teeth of the worm gear are helically meshed with the outer edge of the worm, and the first circular groove, electromagnetic coil, magnetic shell, iron core, slot, worm, second circular groove, sliding groove, convex connecting pin, spring, worm gear, transmission screw and guide rod are regarded as a set of movable components, and there are two sets of such movable components, which are symmetrically arranged with the first rotating shaft as the center.

[0009] As a preferred technical solution of the present invention: the bottom of the arc-shaped support plate is provided with a ball head, and the ball head end of the arc-shaped support plate is adapted to the shape of the inner wall of the socket. The socket is fixedly installed on the top of the fixed rod. The end of the hinge block away from the first connecting rod is fixedly installed on the outer wall of the fixed rod. The end of the first connecting rod away from the second connecting rod is connected and fixed to the bottom edge of the arc-shaped support plate. The outer wall of the inclined surface of the first inclined block is slidably fitted with the outer wall of the inclined surface of the second inclined block. The outer wall of the second inclined block is slidably fitted with the inner wall of the guide box. The outer edge of the gear is meshed with the inner tooth groove of the rack. The hinge block, the first connecting rod, the second connecting rod, the first inclined block and the second inclined block are regarded as a set of movable components, and there are two sets of such movable components, which are symmetrically arranged with the fixed rod as the center.

[0010] As a preferred embodiment of the present invention: the flexible adaptive clamping assembly includes a guide box two and a motor. A coupling is fixedly sleeved on the outer edge of the output shaft of the motor. A bidirectional lead screw is fixedly sleeved on the inner wall of the coupling. A slider is threadedly connected to the outer edge of the bidirectional lead screw. A crossbar is fixedly installed on the top of the slider. An installation block is fixedly installed on the outer wall of the crossbar. One end of a connecting cylinder is fixedly installed on the outer wall of the installation block. An arc-shaped airbag is installed on the other end of the connecting cylinder. A solenoid valve is provided on the outer wall of the arc-shaped airbag. A firing pin and a flexible electrode plate are respectively installed on the inner wall of the connecting cylinder. A corrugated telescopic tube is provided in the inner cavity of the guide box two. A throttle valve is installed on the outer wall of the corrugated telescopic tube. An air pipe is installed on the end of the corrugated telescopic tube away from the throttle valve. A one-way valve is installed on the outer wall of the air pipe. A push plate is slidably connected to the inner wall of the guide box two.

[0011] As a preferred embodiment of the present invention: the motor is installed on the inner wall of the fixed rod. The motor, slider, crossbar, mounting block, connecting cylinder, push plate, corrugated telescopic tube, throttle valve, air pipe, one-way valve, arc-shaped airbag, solenoid valve, impact pin and flexible electrode sheet are regarded as a set of movable components, and there are two sets of such movable components, which are respectively arranged on the outer walls of both ends of the fixed rod. The outer wall of the slider is slidably fitted against the inner wall of the fixed rod. The motor is electrically connected to the power supply and the current regulator respectively.

[0012] As a preferred embodiment of the present invention: the motor is fixedly installed on the outer wall of the signal receiver; the outer walls of the two push plates are connected and fixedly connected to the outer wall of the slider; one end of the two corrugated telescopic tubes is connected and fixedly connected to the outer walls of the two push plates, and the other end of the two corrugated telescopic tubes is connected and fixedly connected to the inner walls of the two guide boxes; the two throttle valves are connected to the air inlet ends of the two corrugated telescopic tubes; one end of the two air pipes is connected and fixedly connected to the air outlet ends of the two corrugated telescopic tubes, and the other end of the two air pipes is connected and fixedly connected to the air inlet ends of the two arc-shaped airbags; the two solenoid valves are connected and fixedly connected to the air outlet ends of the arc-shaped airbags; and the two arc-shaped airbags are electrically connected to the current regulator.

[0013] As a preferred embodiment of the present invention: the open ends of the two connecting cylinders are connected to the inner cavities of the two arc-shaped airbags, the two impact pins are located on one side of the flexible electrode sheet, and the impact pins are electrically connected to the controller.

[0014] As a preferred embodiment of the present invention: the corrugated dust cover is fitted onto the outer wall of the transmission screw, and one end of the first corrugated dust cover is connected and fixed to the inner wall of the guide rod, the other end of the first corrugated dust cover is connected and fixed to the top of the fixed rod, the second corrugated dust cover is fitted onto the outer wall of the transmission screw, and one end of the second corrugated dust cover is connected and fixed to the bottom of the fixed rod, the other end of the second corrugated dust cover is connected and fixed to the inner wall of the guide rod.

[0015] The present invention has the following beneficial effects:

[0016] 1. This fundus angiography positioning auxiliary device drives the rotation of the three-axis rotating shaft via a knob, which in turn drives the two umbrella-shaped teeth to mesh with the two conical teeth to rotate. Through the synchronous transmission of the two-axis rotating shaft, the one conical tooth, and the one umbrella tooth, the power is transmitted to the one-axis rotating shaft. The electromagnetic coil magnetizes the iron core and attracts the convex connecting pin to connect the worm gear, which in turn drives the two worm gears to synchronously mesh with the worm wheel to drive the transmission screw, thus achieving height adaptation for different patients. Secondly, the knob, in conjunction with another set of electromagnetic coil magnetizes the iron core and attracts the convex connecting pin, drives the fixed shaft and gear to rotate. The gear meshes with the rack and drives the two inclined blocks to slide, causing them to push the arc-shaped support plate to adjust the tilt position, thereby matching the eye position for fundus angiography. This avoids the cumbersome process of switching between multiple operating parts, thus meeting the needs of various eye position examinations.

[0017] 2. This fundus angiography positioning auxiliary device drives the power supply to output current through the operation panel. After being adjusted by the current regulator, it drives the electromagnetic coil inside the rotating shaft one to work. During this process, the magnetic field is guided through the magnetic shell to magnetize the iron core, converting electrical energy into magnetic force. This causes the convex connecting pin to slide and connect the rotating shaft one and the worm gear, thereby realizing the power transmission to drive the lifting and adjustment. At the same time, the operation panel is used to switch between power off and power on, driving the rotating shaft three to complete the connection with the rotating shaft fixed shaft, thereby realizing the adjustment and switching of the tray posture. This meets the multi-dimensional positioning requirements, thus eliminating the need for multiple power sources and reducing the cost of the device.

[0018] 3. This fundus angiography positioning auxiliary device, by operating the guide rod, controls the motor to start via power supply. The power supply delivers current to the motor, causing the outer edge of the motor's output shaft to drive a bidirectional lead screw via a coupling. The outer edges of the two ends of the bidirectional lead screw drive two sliders to slide relative to or opposite to each other along the inner wall of the fixed rod. While the two sliders slide relative to each other, they simultaneously drive two push plates fixed to the outer wall to slide along the inner wall of the guide box in the same way, compressing one end of the corrugated telescopic tube. This compresses the gas inside the tube, which is then delivered through a trachea and a one-way valve to two corresponding arc-shaped air bladders. The air bladders deform under the pressure of the gas, thus fixing the patient's head on both sides and preventing the angiography position from shifting due to slight vibrations during the procedure.

[0019] 4. This fundus angiography positioning aid utilizes the fact that when the two arc-shaped airbags come into contact with the sides of the patient's head, they deform from the outside inwards. This deformation increases the internal air pressure, and because the opening of the connecting tube connects to the inner cavity of the arc-shaped airbags, the air pressure on the inner walls of the two airbags correspondingly pushes up the flexible electrode plates, causing them to deform from a horizontal to a convex shape. The convex end of the electrode plate contacts the tip of the impact pin, which then energizes the impact pin and sends a stop signal to the controller. This cuts off the motor's transmission, stops the compression of the corrugated telescopic tube, and stops supplying gas to the arc-shaped airbags. This prevents excessive clamping from applying additional pressure to the sides of the patient's head and avoids potential safety accidents caused by high pressure on the eyes due to increased pressure on the sides of the patient's head. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure on the other side of the present invention;

[0022] Figure 3 This is a schematic diagram of the dustproof structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the transmission overlap structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the switching transmission structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the transmission structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the attitude adjustment structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the flexible adaptive clamping component structure of the present invention;

[0028] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle.

[0029] In the diagram: 1. Support base; 2. Guide rod; 3. Adjustment and switching assembly; 4. Fixing rod; 5. Flexible adaptive clamping assembly; 6. Power supply; 7. Signal receiver; 8. Controller; 9. Current regulator; 10. Guide box one; 11. Transmission screw; 12. Corrugated dust cover one; 13. Corrugated dust cover two; 14. Scale line; 15. Operation panel;

[0030] 301. Shaft 1; 302. Circular Slot 1; 303. Electromagnetic Coil; 304. Magnetic Housing; 305. Iron Core; 306. Slot; 307. Worm Gear; 308. Circular Slot 2; 309. Slide; 310. Convex Connecting Pin; 311. Spring; 312. Worm Gear; 313. Umbrella Gear 1; 314. Shaft 2; 315. Conical Gear 1; 316. Conical Gear 2; 317. Shaft 3; 318. Umbrella Gear 2; 319. Knob; 320. Fixed Shaft; 321. Gear; 322. Arc-shaped Support Plate; 323. Socket; 324. Hinge Block; 325. Connecting Rod 1; 326. Connecting Rod 2; 327. Wedge Block 1; 328. Wedge Block 2; 329. Rack;

[0031] 501. Guide box II; 502. Motor; 503. Coupling; 504. Two-way lead screw; 505. Slider; 506. Crossbar; 507. Mounting block; 508. Connecting cylinder; 509. Push plate; 510. Corrugated telescopic tube; 511. Throttle valve; 512. Air pipe; 513. One-way valve; 514. Arc-shaped airbag; 515. Solenoid valve; 516. Strike pin; 517. Flexible electrode plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1 - Figure 9 A positioning auxiliary device for a fundus angiography system includes a support base 1, a guide rod 2 fixedly installed on the top of the support base 1, an adjustment and switching component 3 provided in the inner cavity of the support base 1, a fixed rod 4 slidably connected to the side wall of the guide rod 2, a flexible adaptive clamping component 5 provided on the top of the fixed rod 4, a power supply 6, a signal receiver 7, a controller 8 and a current regulator 9 respectively installed on the inner wall of the support base 1, a guide box 10 fixedly installed on the inner wall of the support base 1, a transmission screw 11 rotatably connected to the inner wall of the guide rod 2, a corrugated dust cover 12 provided on the top of the fixed rod 4, a corrugated dust cover 2 13 provided on the bottom of the fixed rod 4, an operation panel 15 installed on the top of the support base 1, and scale lines 14 provided on the side wall of the guide rod 2.

[0034] In the above structure, the operation panel 15 sends a command to the power supply 6, which adjusts the output current of the power supply 6 through the current regulator 9, controls the power supply element inside the adjustment switching component 3 to switch the power connection, thereby driving the transmission screw 11 to rotate, and driving the fixed rod 4 to slide smoothly up and down along the guide rod 2, so as to meet the height adaptation requirements of different patients' eyes and the angiography lens. At the same time, the adjustment switching component 3 can switch the output again through the power supply element to adjust the pitch of the arc support plate 322, thereby matching the eye position angle of fundus angiography.

[0035] In a preferred embodiment: the adjustment switching assembly 3 includes a first rotating shaft 301, a worm gear 307, a worm wheel 312, a second rotating shaft 314, a third rotating shaft 317, a fixed shaft 320, a socket 323, a hinge block 324, and a second inclined block 328. The inner wall of the first rotating shaft 301 is provided with a first circular groove 302 and a slot 306. An electromagnetic coil 303 is installed in the inner cavity of the first circular groove 302. A magnetically conductive shell 304 is fixedly installed on the inner wall of the electromagnetic coil 303. An iron core 305 is installed on the inner wall of the magnetically conductive shell 304. The inner wall of the worm gear 307 is provided with a second circular groove 308. The inner wall of the second circular groove 308 is provided with a sliding groove 309. A convex connecting pin 310 is slidably connected to the inner wall of the second circular groove 308. The outer wall of the convex connecting pin 310 is provided with... There is a spring 311, a first umbrella tooth 313 is fixedly sleeved on the outer wall of the first rotating shaft 301, a second conical tooth 315 is fixedly sleeved on the outer wall of the second rotating shaft 314, a second conical tooth 316 is fixedly sleeved on the end of the second rotating shaft 314 away from the first conical tooth 315, a second umbrella tooth 318 is fixedly sleeved on the bottom of the third rotating shaft 317, a knob 319 is fixedly sleeved on the top of the third rotating shaft 317, a gear 321 is fixedly sleeved on the outer wall of the fixed shaft 320, an arc-shaped support plate 322 is provided on the top of the socket 323, a first connecting rod 325 is rotatably connected to the outer wall of the hinge block 324, a second connecting rod 326 is slidably connected to the inner wall of the first connecting rod 325, a first inclined block 327 is fixedly installed at the bottom of the second connecting rod 326, and a rack 329 is fixedly installed on the outer wall of the second inclined block 328.

[0036] In a preferred embodiment: Rotary shaft 301, rotary shaft 314, rotary shaft 317, and fixed shaft 320 are rotatably connected to the inner wall of the support base 1. Electromagnetic coil 303 is electrically connected to power supply 6. One end of slot 306 corresponds to the convex connecting pin 310, and the other end of slot 306 corresponds to the iron core 305. The outer wall of the convex connecting pin 310 slides against the inner wall of the slide groove 309. Spring 311 is located in the inner cavity of circular slot 308, with one end of spring 311 overlapping the outer wall of the convex connecting pin 310. The other end of spring 311... The end overlaps with the inner wall of the second circular groove 308, and the outer wall of the convex connecting pin 310 is adapted to the shape of the inner wall of the slot 306. The first circular groove 302, the electromagnetic coil 303, the magnetic shell 304, the iron core 305 and the slot 306 are regarded as a set of movable components, and there are two sets of such movable components, which are respectively set in the inner cavity of the first rotating shaft 301 and the third rotating shaft 317. The second circular groove 308, the sliding groove 309, the convex connecting pin 310 and the spring 311 are regarded as a set of movable components, and there are two sets of such movable components, which are respectively set in the inner cavity of the worm gear 307 and the first circular groove 302.

[0037] In the above structure, the operation panel 15 sends a signal to the power supply 6, which in turn adjusts the current output to the two sets of electromagnetic coils 303 via the current regulator 9. When adjusting the height of the fixing rod 4, the power supply 6 transmits the current to the electromagnetic coils 303 inside the rotating shaft 301, causing the electromagnetic coils 303 to generate a magnetic field. This magnetic field is guided through the magnetic housing 304 to the iron core 305, magnetizing it. Since one end of the slot 306 corresponds to the convex connecting pin 310 and the other end corresponds to the iron core 305, the magnetized iron core 305 uses the slot 306 as a channel to attract one end of the convex connecting pin 310 and slides linearly along the inner wall of the slide groove 309. As the convex connecting pin 310 slides, it also compresses its spring 311, thus achieving... The rotational power of its rotating shaft 301 is transmitted to the worm gear 307 through the overlapping of the convex connecting pin 310, thereby driving it to perform transmission. Then, when it is necessary to adjust the pitch of its arc-shaped support plate 322, the power supply 6 controlled by the operation panel 15 is cut off from the movable components in the inner cavity of its rotating shaft 301, which consist of a circular groove 302, an electromagnetic coil 303, a magnetic shell 304, an iron core 305, and a slot 306. The guide rod 2 is then controlled by its power supply 6 to another set of movable components in the inner cavity of the rotating shaft 317, thereby applying the same operation. This allows the fixed shaft 320 and the rotating shaft 317 to transmit power through the same transmission overlap, thereby allowing the attitude of its arc-shaped support plate 322 to be adjusted. This eliminates the need for multiple additional power sources for adjustment and control, making it convenient to switch between various adjustments.

[0038] In a preferred embodiment: the outer edge of the second umbrella tooth 318 meshes with the outer edge of the second conical tooth 316, the outer edge of the first conical tooth 315 meshes with the outer edge of the first umbrella tooth 313, the worm gear 312 is fixedly sleeved on the bottom of the transmission screw 11, and the outer edge teeth of the worm gear 312 are helically meshed with the outer edge of the worm 307. The first circular groove 302, the electromagnetic coil 303, the magnetic shell 304, the iron core 305, the slot 306, the worm 307, the second circular groove 308, the sliding groove 309, the convex connecting pin 310, the spring 311, the worm gear 312, the transmission screw 11 and the guide rod 2 are regarded as a set of movable components, and there are two sets of such movable components, which are symmetrically arranged with the first rotating shaft 301 as the center.

[0039] In the above structure, when adjusting the fixing rod 4, rotating the knob 319 causes the rotating shaft 317 to rotate, which in turn causes the umbrella-shaped tooth 318 fixed at the bottom to rotate. Since the outer edge of the umbrella-shaped tooth 318 meshes with the outer edge of the conical tooth 316, the rotating umbrella-shaped tooth 318 meshes with and drives the conical tooth 316 to rotate synchronously. This causes the conical tooth 316 to drive the rotating shaft 314 to rotate synchronously, which in turn drives the conical tooth 315 to rotate synchronously. Since the outer edge of the conical tooth 315 meshes with the outer edge of the umbrella tooth 313, it drives the umbrella tooth 313 to rotate, which in turn drives the rotating shaft 301 to rotate synchronously. The rotating shaft 301 is rotated step by step, and its two ends are connected to the rotating shaft 301 through the circular groove 302, electromagnetic coil 303, magnetic shell 304, iron core 305, slot 306, worm 307, circular groove 308, sliding groove 309, convex connecting pin 310 and spring 311. The rotating shaft 301 transmits its power to the worm 307 symmetrically arranged at both ends. When the two worms 307 rotate, their outer spiral edges mesh with the outer teeth of their corresponding worm wheels 312, which drives the worm wheels 312 to rotate. The rotating worm wheels 312 drive their corresponding transmission screws 11 to rotate synchronously, thereby enabling the transmission screws 11 in the inner cavities of the two guide rods 2 to perform synchronous transmission, thus achieving the smooth lifting and lowering of the fixed rod 4.

[0040] In a preferred embodiment: the bottom of the arc-shaped support plate 322 is provided with a ball head, and the ball head end of the arc-shaped support plate 322 is adapted to the shape of the inner wall of the socket 323. The socket 323 is fixedly installed on the top of the fixed rod 4. The end of the hinge block 324 away from the first connecting rod 325 is fixedly installed on the outer wall of the fixed rod 4. The end of the first connecting rod 325 away from the second connecting rod 326 is connected and fixed to the bottom edge of the arc-shaped support plate 322. The outer wall of the inclined surface of the first inclined block 327 is slidably fitted with the outer wall of the inclined surface of the second inclined block 328. The outer wall of the second inclined block 328 is slidably fitted with the inner wall of the guide box 10. The outer edge of the gear 321 is meshed with the inner wall tooth groove of the rack 329. The hinge block 324, the first connecting rod 325, the second connecting rod 326, the first inclined block 327 and the second inclined block 328 are regarded as a set of movable components, and there are two sets of such movable components, which are symmetrically arranged with the fixed rod 4 as the center.

[0041] In the above structure, when adjusting the posture of the aligned arc-shaped support plate 322, the knob 319 is rotated. This causes the knob 319 to engage with the circular groove 302, electromagnetic coil 303, magnetic shell 304, iron core 305, and slot 306 within the inner cavity of the rotating shaft 317, and the circular groove 308, sliding groove 309, convex connecting pin 310, and spring 311 within the inner cavity of the fixed shaft 320. This enables the fixed shaft 320 to rotate and simultaneously drives its gear 321 to rotate. When the gear 321 rotates clockwise, it meshes clockwise with the rack 329, causing the rack 329 to drive its inclined block 328 along the guide box. The inner wall of the first 10 slides, causing the inclined surface of the second inclined block 328 to fit against the inclined surface of the first inclined block 327. This causes the other set of inclined blocks 328 to gradually separate from the inclined surface of the first inclined block 327, so that the first inclined block 327 will slightly lift the connecting rod 326 upward and move it upward. The displaced connecting rod 326, through its connecting rod 325, pushes one end of the arc-shaped support plate 322 upward slightly via the hinge block 324. This causes the other set of movable components to move downward slightly in the opposite direction, thereby changing the pitch of the arc-shaped support plate 322. The angle of its attitude adjustment is powered by the rotation of the knob 319, which facilitates matching the eye position examination angle required for fundus angiography.

[0042] In a preferred embodiment: the flexible adaptive clamping assembly 5 includes a guide box 501 and a motor 502. A coupling 503 is fixedly sleeved on the outer edge of the output shaft of the motor 502. A bidirectional lead screw 504 is fixedly sleeved on the inner wall of the coupling 503. A slider 505 is threadedly connected to the outer edge of the bidirectional lead screw 504. A crossbar 506 is fixedly mounted on the top of the slider 505. A mounting block 507 is fixedly mounted on the outer wall of the crossbar 506. One end of a connecting cylinder 508 is fixedly mounted on the outer wall of the mounting block 507. At the other end of 08, an arc-shaped airbag 514 is installed. The outer wall of the arc-shaped airbag 514 is equipped with a solenoid valve 515. The inner wall of the connecting cylinder 508 is equipped with a striker 516 and a flexible electrode sheet 517. The inner cavity of the guide box 2 501 is equipped with a corrugated telescopic tube 510. The outer wall of the corrugated telescopic tube 510 is equipped with a throttle valve 511. The end of the corrugated telescopic tube 510 away from the throttle valve 511 is equipped with an air pipe 512. The outer wall of the air pipe 512 is equipped with a one-way valve 513. The inner wall of the guide box 2 501 is slidably connected with a push plate 509.

[0043] In a preferred embodiment: the motor 502 is installed on the inner wall of the fixed rod 4. The motor 502, slider 505, crossbar 506, mounting block 507, connecting cylinder 508, push plate 509, corrugated telescopic tube 510, throttle valve 511, air pipe 512, one-way valve 513, arc-shaped airbag 514, solenoid valve 515, impact pin 516 and flexible electrode sheet 517 are regarded as a set of movable components, and there are two sets of such movable components, which are respectively set on the outer walls of the two ends of the fixed rod 4. The outer wall of the slider 505 is slidably attached to the inner wall of the fixed rod 4. The motor 502 is electrically connected to the power supply 6 and the current regulator 9 respectively.

[0044] In the above structure, by operating the guide rod 2, the motor 502 is started by the power supply 6, so that the power supply 6 supplies current to the motor 502, and the outer edge of the output shaft of the motor 502 drives the bidirectional lead screw 504 through the coupling 503 for transmission. The outer edges of both ends of the bidirectional lead screw 504 drive the two sliders 505 to slide relative to or opposite to each other along the inner wall of the fixed rod 4, thereby realizing the transmission of the two sets of moving components.

[0045] In a preferred embodiment: the motor 502 is fixedly installed on the outer wall of the signal receiver 7; the outer walls of the two push plates 509 are connected and fixed to the outer wall of the slider 505; one end of the two corrugated telescopic tubes 510 is connected and fixed to the outer wall of the two push plates 509, and the other end of the two corrugated telescopic tubes 510 is connected and fixed to the inner wall of the two guide boxes 501; the two throttle valves 511 are connected to the air inlet end of the two corrugated telescopic tubes 510; one end of the two air pipes 512 is connected and fixed to the air outlet end of the two corrugated telescopic tubes 510, and the other end of the two air pipes 512 is connected and fixed to the air inlet end of the two arc-shaped airbags 514; the two solenoid valves 515 are connected and fixed to the air outlet end of the arc-shaped airbags 514; and the two arc-shaped airbags 514 are electrically connected to the current regulator 9.

[0046] In the above structure, when the two sliders 505 slide relative to each other, they synchronously drive the two push plates 509 fixedly connected to the outer wall to slide along the inner wall of the guide box 501 in the same way. When the two push plates 509 slide relative to each other, they will correspondingly squeeze one end of the two corrugated telescopic tubes 510. The gas in the inner cavity of the two corrugated telescopic tubes 510 is compressed under the compression. The compressed gas is delivered through the air tube 512 and the one-way valve 513 to the two corresponding arc-shaped airbags 514. The arc-shaped airbags 514 will deform under the filling of gas, so that they can apply pressure to both sides of the patient's head. The device is fixed in place to prevent the angiography position from shifting due to slight tremors during ocular angiography. Secondly, when the two push plates 509 slide in opposite directions, the two corrugated telescopic tubes 510 will be stretched accordingly. When stretched, negative pressure will be generated inside the two corrugated telescopic tubes 510. This negative pressure will draw in external air through the throttle valve 511 to achieve balance and thus achieve natural air intake. At the same time, the current regulator 9 controls the two solenoid valves 515 to discharge the gas from the corresponding arc-shaped airbag 514 cavity, thereby returning to the initial state.

[0047] In a preferred embodiment: the open ends of the two connecting cylinders 508 are connected to the inner cavities of the two arc-shaped airbags 514, the two impact pins 516 are located on one side of the flexible electrode sheet 517, and the impact pins 516 are electrically connected to the controller 8.

[0048] In the above structure, when the two arc-shaped airbags 514 deform due to the filling of gas, and when they come into contact with the sides of the patient's head, the two arc-shaped airbags 514 will deform again from the outside to the inside. When the two arc-shaped airbags 514 deform, the internal air pressure increases due to the deformation of the arc-shaped airbags 514. Since the opening of the connecting cylinder 508 is connected to the inner cavity of the arc-shaped airbags 514, the air pressure on the inner wall of the two arc-shaped airbags 514 will correspondingly push up the corresponding flexible electrode sheet 517, causing it to deform. When the flexible electrode sheet 517 deforms, it will change from a horizontal shape to a convex shape, and the convex end will come into contact with the tip of the impact pin 516. This causes the impact pin 516 to be energized and send a stop transmission signal to the controller 8, which cuts off the transmission of the motor 502, stops the compression of the corrugated telescopic tube 510, and stops the delivery of gas to the arc-shaped airbag 514. This prevents the airbag from applying extra pressure to the sides of the patient's head due to excessive clamping, and also prevents the eyes from being damaged by high pressure due to increased pressure on the sides of the patient's head. The two arc-shaped airbags 514 automatically adapt to different patient face shapes for clamping and fixation. After the two arc-shaped airbags 514 are deflated, the two flexible electrode plates 517 return to the horizontal position due to the decrease in air pressure, thereby releasing them from the impact pin 516.

[0049] In a preferred embodiment: a corrugated dust cover 12 is fitted onto the outer wall of the transmission screw 11, and one end of the corrugated dust cover 12 is connected and fixed to the inner wall of the guide rod 2, and the other end of the corrugated dust cover 12 is connected and fixed to the top of the fixed rod 4; a corrugated dust cover 13 is fitted onto the outer wall of the transmission screw 11, and one end of the corrugated dust cover 13 is connected and fixed to the bottom of the fixed rod 4, and the other end of the corrugated dust cover 13 is connected and fixed to the inner wall of the guide rod 2.

[0050] In the above structure, when the fixed rod 4 is adjusted for displacement, the sliding of the fixed rod 4 will cause the transmission screw 11 at its top to be compressed, and at the same time cause the top of the corrugated dustproof sleeve 2 13 at its bottom to be stretched. This allows the transmission screw 11 and the corrugated dustproof sleeve 2 13 to synchronously achieve dust protection for the transmission screw 11, thereby preventing dust from entering the screw groove on the surface of the transmission screw 11 and causing the adjustment of the fixed rod 4 to be stuck.

[0051] Working principle: First, guide the patient to sit upright in front of the device, placing their head on the top of the arc-shaped support plate 322, so that their eyes are roughly aligned with the direction of the angiography lens. Switch the power mode via the operation panel 15, first supplying power to the electromagnetic coil 303 inside the rotating shaft 301, causing the electromagnetic coil 303 to generate a magnetic field. This magnetic field is guided through the magnetically conductive outer shell 304 to the iron core 305, magnetizing the iron core 305. Because one end of the slot 306 corresponds to the convex connecting pin 310, and the other end corresponds to the iron core 305, the magnetized iron core 305 uses the slot 306 as a channel to attract one end of the convex connecting pin 310 and slide linearly along the inner wall of the slide groove 309. As the convex connecting pin 310 slides, it also compresses its spring 311, causing... At this point, the rotational power of its rotating shaft 301 is transmitted to the worm gear 307 through the overlapping of the convex connecting pin 310. After the overlapping is completed, rotating its knob 319 causes the rotating shaft 317 to rotate, which in turn causes the umbrella-shaped tooth 318 fixed at its bottom to rotate. Since the outer edge of the umbrella-shaped tooth 318 meshes with the outer edge of the conical tooth 316, the rotating umbrella-shaped tooth 318 will mesh and drive the conical tooth 316 to rotate synchronously. This causes the conical tooth 316 to drive its rotating shaft 314 to rotate synchronously, which in turn drives the conical tooth 315 to rotate synchronously. Since the outer edge of the conical tooth 315 meshes with the outer edge of the umbrella tooth 313, it drives... The umbrella-shaped tooth 313 rotates, causing its rotating shaft 301 to rotate synchronously. The rotating shaft 301 transmits power to the worm gears 307 symmetrically arranged at both ends. When the two worm gears 307 rotate, their outer spiral edges mesh with the outer teeth of their corresponding worm wheels 312, causing the worm wheels 312 to rotate. The rotating worm wheels 312 then drive their corresponding transmission screws 11 to rotate synchronously. The transmission screws 11 cause the fixed rod 4 to rise and fall along the guide rod 2, aligning it with the scale line 14 to position it so that it is aligned with the patient's eye and the angiography camera lens. Then, by cutting off the current output of the electromagnetic coil 303 inside the rotating shaft 301, the iron core 305 is released from its contact with the convex connecting pin 310. The adsorption causes the convex connecting pin 310 to reset under the rebound of the spring 311, thereby cutting off the power connection between the worm gear 307 and the rotating shaft 301. Then, when adjusting the posture by aligning the arc-shaped support plate 322, the knob 319 is rotated. The knob 319, through the circular groove 302, electromagnetic coil 303, magnetic shell 304, iron core 305, and slot 306 in the inner cavity of the rotating shaft 317, and the circular groove 308, slide 309, convex connecting pin 310, and spring 311 in the inner cavity of the fixed shaft 320, engages to achieve transmission connection. This causes the fixed shaft 320 to rotate and simultaneously drives its gear 321 to rotate. When the rotating gear 321 rotates clockwise, it engages the rack 329 clockwise.This causes the rack 329 to drive its second inclined block 328 to slide along the inner wall of the guide box 10, so that the inclined surface of the sliding second inclined block 328 is in contact with the inclined surface of the first inclined block 327. This causes the other set of second inclined blocks 328 to gradually disengage from the inclined surfaces of the first inclined block 327, causing the first inclined block 327 to slightly lift the connecting rod 326 upwards. This causes the displaced connecting rod 326 to slightly tilt one end of the arc-shaped support plate 322 upwards via its connecting rod 325, with the hinge block 324 as the pivot point. Another set of its moving components moves downwards in the opposite direction, thereby changing the pitch of the arc-shaped support plate 322. The angle of its attitude adjustment is powered by the rotation of the knob 319, which facilitates matching the eye position examination angle required for fundus angiography. Then, the motor 502 is started through the operation panel 15, which drives the bidirectional lead screw 504 to rotate through the coupling 503. This drives the slider 505 to slide relative to the inner wall of the fixed rod 4. When the slider 505 slides, it also synchronously drives the push plate 5 fixed to it on the outer wall. 09 slides along the inner wall of guide box 501, causing push plate 509 to squeeze corrugated telescopic tube 510 during sliding. This causes gas inside the corrugated telescopic tube 510 to be injected into arc-shaped airbag 514 via trachea 512 and one-way valve 513. The arc-shaped airbag 514 inflates and fits snugly against the patient's temporal and cheek areas, forming a flexible clamp. When the arc-shaped airbag 514 is compressed, causing an increase in internal air pressure, it pushes flexible electrode plate 517 to contact the striker 516. The striker 516 then sends a signal to controller 8, causing the controller to... The controller 8 cuts off the power to the motor 502, stops inflation, and maintains a constant clamping force, thus automatically adapting to different face shapes and eliminating the risk of excessive pressure. After the imaging is completed, the solenoid valve 515 is opened via the control panel 15, causing the arc-shaped airbag 514 to depressurize and contract, allowing the flexible electrode sheet 517 to elastically reset and disengage from the impact pin 516. Then, the motor 502 is started to rotate in the reverse direction, driving the slider 505 and push plate 509 to reset, causing the corrugated telescopic tube 510 to be stretched and inhaled by the push plate 509, returning to its initial state.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning auxiliary device for a fundus angiography system, comprising a support base (1), characterized in that: A guide rod (2) is fixedly installed on the top of the support base (1). An adjustment switching component (3) is provided in the inner cavity of the support base (1). A fixed rod (4) is slidably connected to the side wall of the guide rod (2). A flexible adaptive clamping component (5) is provided on the top of the fixed rod (4). A power supply (6), a signal receiver (7), a controller (8), and a current regulator (9) are respectively installed on the inner wall of the support base (1). A guide box (10) is fixedly installed on the inner wall of the support base (1). A transmission screw (11) is rotatably connected to the inner wall of the guide rod (2). A corrugated dust cover (12) is provided on the top of the fixed rod (4). A corrugated dust cover (2) is provided on the bottom of the fixed rod (4). An operation panel (15) is installed on the top of the support base (1). A scale line (14) is provided on the side wall of the guide rod (2).

2. The positioning auxiliary device for a fundus angiography system according to claim 1, characterized in that: The adjustment and switching assembly (3) includes a rotating shaft one (301), a worm gear (307), a worm wheel (312), a rotating shaft two (314), a rotating shaft three (317), a fixed shaft (320), a socket (323), a hinge block (324), and a slant block two (328). The inner wall of the rotating shaft one (301) is provided with a circular groove one (302) and a slot (306). An electromagnetic coil (303) is installed in the inner cavity of the circular groove one (302). A magnetically conductive outer shell (304) is fixedly installed on the inner wall of the electromagnetic coil (303). An iron core (305) is installed on the inner wall of the magnetically conductive outer shell (304). A circular groove (308) is formed on the inner wall of the worm gear (307). A sliding groove (309) is formed on the inner wall of the circular groove (308). A convex connecting pin (310) is slidably connected to the inner wall of the circular groove (308). A spring (319) is provided on the outer wall of the convex connecting pin (310). 1) The outer wall of the first rotating shaft (301) is fixedly sleeved with an umbrella-shaped tooth (313), the outer wall of the second rotating shaft (314) is fixedly sleeved with a conical tooth (315), the end of the second rotating shaft (314) away from the conical tooth (315) is fixedly sleeved with a conical tooth (316), the bottom of the third rotating shaft (317) is fixedly sleeved with an umbrella-shaped tooth (318), and the top of the third rotating shaft (317) is fixedly sleeved with a knob (319). The fixed shaft The outer wall of (320) is fixedly fitted with a gear (321), the top of the socket (323) is provided with an arc-shaped support plate (322), the outer wall of the hinge block (324) is rotatably connected with a connecting rod one (325), the inner wall of the connecting rod one (325) is slidably connected with a connecting rod two (326), the bottom of the connecting rod two (326) is fixedly installed with a wedge one (327), and the outer wall of the wedge two (328) is fixedly installed with a rack (329).

3. The positioning auxiliary device for a fundus angiography system according to claim 2, characterized in that: The first rotating shaft (301), the second rotating shaft (314), the third rotating shaft (317), and the fixed shaft (320) are rotatably connected to the inner wall of the support base (1). The electromagnetic coil (303) is electrically connected to the power supply (6). One end of the slot (306) is open and corresponds to the convex connecting pin (310), and the other end of the slot (306) is open and corresponds to the iron core (305). The outer wall of the convex connecting pin (310) is slidably fitted against the inner wall of the slide groove (309). The spring (311) is located in the inner cavity of the circular groove (308), and one end of the spring (311) overlaps with the outer wall of the convex connecting pin (310). The other end of the spring (311) The outer wall of the convex connecting pin (310) is adapted to the shape of the inner wall of the slot (306) and overlaps with the inner wall of the circular groove (308). The circular groove (302), electromagnetic coil (303), magnetic shell (304), iron core (305) and slot (306) are considered as a set of movable components, and there are two sets of such movable components, which are respectively set in the inner cavity of the rotating shaft (301) and the rotating shaft (317). The circular groove (308), slide (309), convex connecting pin (310) and spring (311) are considered as a set of movable components, and there are two sets of such movable components, which are respectively set in the inner cavity of the worm (307) and the circular groove (302).

4. The positioning auxiliary device for a fundus angiography system according to claim 2, characterized in that: The outer edge of the umbrella-shaped tooth 2 (318) meshes with the outer edge of the conical tooth 2 (316), the outer edge of the conical tooth 1 (315) meshes with the outer edge of the umbrella-shaped tooth 1 (313), the worm wheel (312) is fixedly sleeved on the bottom of the transmission screw (11), the outer edge teeth of the worm wheel (312) mesh with the outer edge of the worm (307) in a spiral configuration, the circular groove 1 (302), the electromagnetic coil (303), the magnetic shell (304), the iron core (305), the slot (306), the worm (307), the circular groove 2 (308), the sliding groove (309), the convex connecting pin (310), the spring (311), the worm wheel (312), the transmission screw (11) and the guide rod (2) are regarded as a set of movable components, and the number of such movable components is two sets, which are symmetrically arranged with the rotating shaft 1 (301) as the center.

5. The positioning auxiliary device for a fundus angiography system according to claim 2, characterized in that: The bottom of the arc-shaped support plate (322) is provided with a ball head, and the ball head end of the arc-shaped support plate (322) is adapted to the shape of the inner wall of the socket (323). The socket (323) is fixedly installed on the top of the fixing rod (4). The end of the hinge block (324) away from the first connecting rod (325) is fixedly installed on the outer wall of the fixing rod (4). The end of the first connecting rod (325) away from the second connecting rod (326) is connected and fixed to the bottom edge of the arc-shaped support plate (322). The inclined end of the first inclined block (327) The outer wall of the inclined block (328) is slidably fitted to the inclined outer wall of the inclined block (328). The outer wall of the inclined block (328) is slidably fitted to the inner wall of the guide box (10). The outer edge of the gear (321) is meshed with the inner tooth groove of the rack (329). The hinge block (324), connecting rod (325), connecting rod (326), inclined block (327) and inclined block (328) are considered as a set of movable components. There are two sets of movable components, which are symmetrically arranged with the fixed rod (4) as the center.

6. The positioning auxiliary device for a fundus angiography system according to claim 1, characterized in that: The flexible adaptive clamping assembly (5) includes a guide box (501) and a motor (502). A coupling (503) is fixedly sleeved on the outer edge of the output shaft of the motor (502). A two-way lead screw (504) is fixedly sleeved on the inner wall of the coupling (503). A slider (505) is threadedly connected to the outer edge of the two-way lead screw (504). A crossbar (506) is fixedly installed on the top of the slider (505). An mounting block (507) is fixedly installed on the outer wall of the crossbar (506). One end of a connecting cylinder (508) is fixedly installed on the outer wall of the mounting block (507). The other end of the connecting cylinder (508) is... The device is equipped with an arc-shaped airbag (514), the outer wall of which is provided with a solenoid valve (515). The inner wall of the connecting cylinder (508) is respectively equipped with a striker (516) and a flexible electrode sheet (517). The inner cavity of the guide box (501) is provided with a corrugated telescopic tube (510). The outer wall of the corrugated telescopic tube (510) is equipped with a throttle valve (511). The end of the corrugated telescopic tube (510) away from the throttle valve (511) is equipped with an air pipe (512). The outer wall of the air pipe (512) is equipped with a one-way valve (513). The inner wall of the guide box (501) is slidably connected with a push plate (509).

7. The positioning auxiliary device for a fundus angiography system according to claim 6, characterized in that: The motor (502) is installed on the inner wall of the fixed rod (4). The motor (502), slider (505), crossbar (506), mounting block (507), connecting cylinder (508), push plate (509), corrugated telescopic tube (510), throttle valve (511), air pipe (512), one-way valve (513), arc-shaped airbag (514), solenoid valve (515), impact pin (516) and flexible electrode sheet (517) are considered as a set of movable components. There are two sets of movable components, which are respectively set on the outer walls of the two ends of the fixed rod (4). The outer wall of the slider (505) is slidably attached to the inner wall of the fixed rod (4). The motor (502) is electrically connected to the power supply (6) and the current regulator (9).

8. The positioning auxiliary device for a fundus angiography system according to claim 7, characterized in that: The motor (502) is fixedly installed on the outer wall of the signal receiver (7). The outer walls of the two push plates (509) are connected and fixed to the outer wall of the slider (505). One end of the two corrugated telescopic tubes (510) is connected and fixed to the outer wall of the two push plates (509), and the other end of the two corrugated telescopic tubes (510) is connected and fixed to the inner wall of the two guide boxes (501). The two throttle valves (511) are connected to the air inlet of the two corrugated telescopic tubes (510). One end of the two air pipes (512) is connected and fixed to the air outlet of the two corrugated telescopic tubes (510), and the other end of the two air pipes (512) is connected and fixed to the air inlet of the two arc-shaped airbags (514). The two solenoid valves (515) are connected and fixed to the air outlet of the arc-shaped airbags (514). The two arc-shaped airbags (514) are electrically connected to the current regulator (9).

9. The positioning auxiliary device for a fundus angiography system according to claim 7, characterized in that: The open ends of the two connecting cylinders (508) are connected to the inner cavities of the two arc-shaped airbags (514), the two impact pins (516) are located on one side of the flexible electrode sheet (517), and the impact pins (516) are electrically connected to the controller (8).

10. The positioning auxiliary device for a fundus angiography system according to claim 1, characterized in that: The first corrugated dust cover (12) is fitted on the outer wall of the transmission screw (11), and one end of the first corrugated dust cover (12) is connected and fixed to the inner wall of the guide rod (2). The other end of the first corrugated dust cover (12) is connected and fixed to the top of the fixed rod (4). The second corrugated dust cover (13) is fitted on the outer wall of the transmission screw (11), and one end of the second corrugated dust cover (13) is connected and fixed to the bottom of the fixed rod (4). The other end of the second corrugated dust cover (13) is connected and fixed to the inner wall of the guide rod (2).

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