Medical ultrasonic coupling agent automatic warming and smearing device

Abstract

The application relates to the technical field of medical ultrasonic diagnosis auxiliary devices, and discloses an automatic warming and smearing device for medical ultrasonic coupling agent, which comprises a mounting frame, a body surface profiling smearing assembly, a multidirectional moving assembly and a film replacing mechanism. The body surface profiling smearing assembly comprises a supporting seat, a profiling driving motor, a bidirectional screw rod, two groups of displacement frames, two groups of nut sleeves, two groups of electric push rods, a pressure sensor, two groups of sliding cylinders, buffer elastic members, two groups of smearing plates, two groups of sliding blocks and a medical elastic pad. The supporting seat is arranged outside the mounting frame, the profiling driving motor is fixed on the supporting seat, and the output end of the profiling driving motor is fixedly connected with the bidirectional screw rod. Through the profiling smearing assembly, multi-posture conversion is realized to adapt to the complex body surface profile, and the automatic constant-temperature smearing of the coupling agent is completed in cooperation with a warming piece, a wave spring buffer and a medical film physical barrier, so that the stress is stable and cross infection is eliminated.

Description

Technical Field

[0001] This invention relates to the field of medical ultrasound diagnostic auxiliary device technology, specifically to an automatic heating and application device for medical ultrasound coupling agent. Background Technology

[0002] Ultrasound examination is a widely used and important imaging diagnostic tool in clinical medicine. During an ultrasound examination, medical ultrasound coupling agent must be applied between the patient's skin and the ultrasound probe to eliminate acoustic impedance interference from the air and ensure effective transmission of ultrasound waves. With the development of medical device automation, automatic application equipment that can replace manual application has gradually appeared on the market, aiming to improve the standardization and clinical efficiency of ultrasound examinations.

[0003] Existing automated ultrasound coupling agent application devices typically include a support frame, a drive structure, and an application plate that comes into direct contact with the human body. During operation, the application plate is driven by a motor to move horizontally or in a simple arc motion on the patient's skin surface, thereby spreading the ultrasound coupling agent evenly. Some automated devices can use a multi-axis moving mechanism to move the application component to a designated skin area to complete the basic application action, which reduces the manual operation steps of medical staff to a certain extent.

[0004] However, the aforementioned existing devices still have significant structural limitations in actual clinical applications: the application components are usually fixed in shape or can only be adjusted slightly at the angle, lacking a multi-segment mechanical contouring adjustment structure, making it difficult to achieve horizontal, tilted, or even inverted V-shaped posture conversions. As a result, they cannot truly adapt to the complex curvature of the body surface, such as the abdomen, sides, and breasts. At the same time, the aforementioned transmission application methods are mostly rigid contact, lacking a flexible buffering mechanism in the vertical direction. When pressing down, they cannot effectively absorb the vertical displacement backlash caused by the patient's breathing fluctuations, which can easily lead to unstable force or even rigid pressure on the body surface. In addition, the aforementioned devices often apply room temperature coupling agent directly to the human body, which not only lacks a follow-up heating structure to maintain a suitable body temperature for the patient, but also lacks a physical isolation barrier to prevent cross-infection. This directly leads to multiple patients sharing the same contact surface, which not only increases the risk of cross-infection, but also brings a cumbersome wiping and cleaning burden to medical staff. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic heating and application device for medical ultrasound coupling agents, which solves the problems of being unable to adaptively conform to complex body surface contours, lacking flexible buffering that easily causes rigid pressure, and being unable to simultaneously heat up and prevent cross-infection during application.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic heating and application device for medical ultrasound coupling agent, comprising...

[0007] Mounting rack;

[0008] A contoured body surface application assembly includes a support base, a contoured drive motor, a bidirectional lead screw, two sets of displacement frames, two sets of nut sleeves, two sets of electric push rods, a pressure sensor, two sets of slide cylinders, a buffer elastic element, two sets of application plates, two sets of sliders, and a medical elastic pad. The support base is disposed outside the mounting frame, and the contoured drive motor is fixed to the support base. The output end of the contoured drive motor is fixedly connected to the bidirectional lead screw. Each of the displacement frames is threadedly connected to the bidirectional lead screw through a nut sleeve. Each of the electric push rods... Fixed to each displacement frame, the pressure sensor is fixed to the electric push rod, the telescopic end of the electric push rod is elastically connected to the slide cylinder through a buffer elastic element, each of the coating plates has a sliding groove, each of the sliders is slidably assembled in the sliding groove, and the bottom end of each of the slide cylinders is hinged to each slider. The top ends of the opposite sides of the two sets of coating plates are hinged, and the bottom ends have a clearance slope. The medical elastic pad is fixed to the bottom of the two sets of coating plates, and the medical elastic pad is provided with a heating element for heating the coupling agent.

[0009] A multi-directional moving component is mounted on a mounting frame and is used to drive the support seat in the body surface contouring application component to move in multiple axes.

[0010] The film changing mechanism includes a placement shaft, a winding drive motor, a waste roller, a constant tension spring, a damping shaft, and a tensioning arm. The placement shaft is rotatably connected to one set of coating plates, the winding drive motor is fixed to another set of coating plates, the output end of the winding drive motor is fixedly connected to the waste roller, the constant tension spring is fixed to the coating plate and located below the placement shaft, the tensioning arm is fixed to the trigger end of the constant tension spring, and the damping shaft is fixed to the tensioning arm.

[0011] Preferably, the buffer elastic element includes a wave spring, the two ends of which are fixed to the telescopic end of the electric push rod and the inner wall of the slide cylinder, respectively.

[0012] Preferably, the slide cylinder has several sets of corresponding limiting grooves, and the body surface contouring coating component also includes several sets of corresponding limiting strips. The corresponding limiting strips are fixedly assembled on the telescopic ends of each electric push rod and slidably connected in each limiting groove.

[0013] Preferably, the multi-directional moving assembly includes a first motor, a first lead screw, a moving frame, a second motor, a second lead screw, an adjusting frame, a third motor, a third lead screw, and several sets of threaded sleeves. The first motor is fixed to the mounting frame, and the output end of the first motor is fixedly connected to the first lead screw. The moving frame is threadedly connected to the first lead screw through a set of threaded sleeves. The second motor is fixed to the moving frame, and the output end of the second motor is fixedly connected to the second lead screw. The adjusting frame is threadedly connected to the second lead screw through a set of threaded sleeves. The third motor is fixed to the adjusting frame, and the output end of the third motor is fixedly connected to the third lead screw. The support base is threadedly connected to the third lead screw through a set of threaded sleeves.

[0014] Preferably, the coating plate has a receiving opening, and the film changing mechanism further includes a first silicone scraper, a second silicone scraper, a collection box, and a medical silicone one-way duckbill valve. The collection box is assembled in the receiving opening, the second silicone scraper is fixed to the coating plate, and the first silicone scraper and the second silicone scraper are in abutting fit. The collection box has a liquid inlet, and the medical silicone one-way duckbill valve is fixed to the liquid inlet and extends into the collection box to prevent the fluid inside the collection box from overflowing when the coating plate is tilted.

[0015] Preferably, the inner wall of the collection box is provided with a fish scale pattern.

[0016] Preferably, each of the coating plates is provided with a positioning port, a positioning block is provided in the positioning port, a limiting block is fixedly connected to each positioning block, and a slot is provided on each limiting block for placing the shaft and the waste roller. The first silicone scraper is fixedly connected to any one of the limiting blocks, the collection box is fixed on the limiting block, and both the coating plate and the limiting block are provided with limiting ports. A limiting shaft that inserts into the limiting port is fixed on the outer wall of the opposite end of the first and second silicone scrapers.

[0017] Preferably, a fixing component is provided inside the positioning port, the fixing component including a magnetic block, the magnetic block being fixed inside the positioning port and magnetically engaging with the limiting block.

[0018] Preferably, the positioning block has a fixing opening, and the fixing component includes a fixing block, a rod body one, a coil spring, a rod body two, and a telescopic spring. The rod body two is elastically connected to the positioning opening through the telescopic spring, the rod body one is elastically rotated on the rod body two through the coil spring, and the fixing block is fixed on the rod body one and can pass through the fixing opening.

[0019] Preferably, the fixing component includes a fixing cone, a fixing cone block, several sets of engagement blocks 1 and several sets of engagement blocks 2. The fixing cone is fixed to the positioning port, the fixing cone block is fixed to the positioning block, each engagement block 1 is fixed in a circumferential array at equal intervals on the inner surface of the fixing cone, and each engagement block 2 is fixed in a circumferential array at equal intervals on the outer surface of the fixing cone block. The engagement blocks 1 and engagement blocks 2 engage and cooperate.

[0020] This invention provides an automatic heated application device for medical ultrasound coupling agent. It has the following beneficial effects:

[0021] 1. This invention achieves three-dimensional spatial positioning through multi-directional moving components and uses contour-following applicator components to achieve horizontal, tilted, and inverted V-shaped posture conversion of the applicator plate, adaptively conforming to the curves of the human body to meet the ultrasound examination needs of complex contours such as the abdomen, side, and breast. During the applicator application process, the heating element continuously heats the coupling agent to maintain a suitable body temperature, and the wave spring is simultaneously compressed and deformed to absorb the vertical recoil displacement caused by the patient's breathing, ensuring stable contact force. At the same time, the membrane changing mechanism unidirectionally winds the medical membrane to form a physical barrier to avoid cross-infection. Through the coordinated action of multiple components, the device completes the automatic constant-temperature application of the coupling agent, standardizes the examination process, and improves the level of clinical health prevention and control.

[0022] 2. This invention integrates the limiting block, collection box, and silicone scraper into a single, synchronously pluggable module, which is fixed in the positioning port. It provides load-bearing support for the placement shaft and waste roller. When winding up the medical membrane, silicone scraper one and silicone scraper two are used to clamp and peel off the residual coupling agent and collect it into the collection box to avoid contaminating the patient. When the limiting block is pulled out during membrane replacement, silicone scraper one is moved out at the same time, releasing the clamping state of the two sets of scrapers and releasing unobstructed membrane penetration space in front of the waste roller. This facilitates the traction and fixation of the new membrane and avoids forcibly stuffing the membrane into the narrow angle. During resetting, the limiting shaft is quickly aligned by plugging into the limiting port, which takes into account both the closed-loop waste liquid collection and the convenience of membrane penetration operation.

[0023] 3. This invention, through the design of three fixing components, adapts to the assembly needs of different clinical environments. The magnetic suction component enables tool-free quick positioning and locking, improving the efficiency of routine consumable replacement. The pressing linkage component utilizes the rebound of torsion springs to form a cross-shaped physical misalignment, avoiding the risk of magnetic force attenuation and providing reliable anti-pull-out force. The cone-shaped block component disperses single-point stress through the combined force of multiple sets of tooth surfaces, while utilizing the deformation characteristics of elastic materials to achieve efficient tool-free insertion and removal. The three structures respectively emphasize ease of operation, dynamic anti-detachment performance, and static high stability, meeting the differentiated use in specific medical scenarios such as high-frequency disinfection or magnetic field confinement. Attached Figure Description

[0024] Figure 1 This is a front perspective view of the overall structure of the present invention;

[0025] Figure 2 This is a top view of the overall structure of the present invention;

[0026] Figure 3 For the present invention Figure 2 Enlarged view of region A in the middle;

[0027] Figure 4 For the present invention Figure 2 Enlarged view of region B in the middle;

[0028] Figure 5 This is a top view of the coating plate structure in Embodiment 1 of the present invention;

[0029] Figure 6 For the present invention Figure 5 Enlarged diagram of region C in the middle;

[0030] Figure 7 This is a top view of the coating plate structure in Embodiment 2 of the present invention;

[0031] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of region D in the middle;

[0032] Figure 9 This is a cross-sectional view of the coating plate structure in Embodiment 3 of the present invention;

[0033] Figure 10 For the present invention Figure 9 Enlarged schematic diagram of region E in the middle.

[0034] The components include: 1. Mounting bracket; 2. Motor 1; 3. Lead screw 1; 4. Moving frame; 5. Motor 2; 6. Lead screw 2; 7. Adjusting frame; 8. Motor 3; 9. Lead screw 3; 10. Support base; 11. Contouring drive motor; 12. Bidirectional lead screw; 14. Displacement frame; 15. Electric push rod; 16. Pressure sensor; 17. Slide cylinder; 18. Limiting groove; 19. Limiting strip; 20. Wave spring; 21. Spreading plate; 22. Slide groove; 23. Slider; 24. Avoidance slope; 25. Medical elastic pad; 26. Placement shaft; 27. Limiting block; 28. Winding drive motor. 29. Waste roller; 30. Constant tension spring; 31. Damping shaft; 32. Tensioning arm; 33. Positioning port; 34. Positioning block; 35. Magnetic block; 36. Silicone scraper one; 37. Silicone scraper two; 38. Storage port; 39. Collection box; 40. Liquid inlet; 41. Medical silicone one-way duckbill valve; 42. Limiting shaft; 43. Limiting port; 44. Fixing port; 45. Fixing block; 46. Rod one; 47. Coil spring; 48. Rod two; 49. Telescopic spring; 50. Fixed cone; 51. Fixed cone block; 52. Engagement one; 53. Engagement block two. Detailed Implementation

[0035] The technical solutions in 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.

[0036] Example 1:

[0037] Please see the appendix Figure 1 -Appendix Figure 6 This invention provides an automatic heating and application device for medical ultrasound coupling agent, including a mounting frame 1, a body surface contouring application assembly, a multi-directional movement assembly, and a film changing mechanism. The body surface contouring application assembly includes a support base 10, a contouring drive motor 11, a bidirectional lead screw 12, two sets of displacement frames 14, two sets of nut sleeves, two sets of electric push rods 15, a pressure sensor 16, two sets of slide cylinders 17, a buffer elastic element, two sets of application plates 21, two sets of sliders 23, and a medical elastic pad 25. It provides basic mechanical adjustment components for conforming to the different curvatures of the human body surface contour. The support base 10 is configured outside the mounting frame 1. The contour drive motor 11 is fixed on the support base 10. The output end of the contour drive motor 11 is fixedly connected to the bidirectional lead screw 12. Each displacement frame 14 is threadedly connected to the bidirectional lead screw 12 through a nut sleeve, and each displacement frame 14 is simultaneously slidably mounted on the support base 10 to restrict the circumferential rotation of the displacement frame 14. This allows the contour drive motor 11 to drive the two sets of displacement frames 14 to perform synchronous lateral translation on the bidirectional lead screw 12 when it rotates. The contour drive motor 11 is a 42 closed-loop stepper motor with a high-precision encoder. The specific model can be 42CME04, ensuring the CNC rotation of the bidirectional lead screw 12. To ensure accuracy, the tilting and folding angles of the two sets of application plates 21 are precisely controlled. Each electric push rod 15 is fixed to each displacement frame 14, and a pressure sensor 16 is fixed to the electric push rod 15 to monitor the downward contact pressure data output by the electric push rod 15 in real time. The telescopic end of the electric push rod 15 is elastically connected to the slide cylinder 17 through a buffer elastic element, so that when the electric push rod 15 applies downward pressure, the buffer elastic element absorbs the vertical displacement backlash caused by human breathing. Each application plate 21 has a groove 22, and each slider 23 is slidably assembled in the groove 22, and the bottom end of each slide cylinder 17 is hinged to the slider 23. In conjunction with the other components, the horizontal force of the displacement frame 14 moving laterally is converted into the force that forces the two sets of smear plates 21 to tilt and fold. The top of the two sets of smear plates 21 on opposite sides is hinged and the bottom is provided with a relief slope 24 to avoid physical interference of the edge components when the two sets of smear plates 21 are folded inward to form an inverted V-shape. The medical elastic pad 25 is fixed to the bottom of the two sets of smear plates 21 and is provided with a heating element for heating the coupling agent, so that the ultrasound coupling agent that is in direct contact with the patient's skin is maintained at a suitable temperature close to body temperature. The multi-directional moving component is set on the mounting frame 1.

[0038] Mounting bracket 1 is directly fixed to the bottom or side of the bed board of the inspection bed by bolts. Mounting bracket 1 is made of 6061-T6 aluminum alloy profile with anodized surface treatment. The profiles are connected by angle brackets and T-nuts. The bottom crossbeam of mounting bracket 1 has bolt through holes. The bolts pass through the through holes and cooperate with the pre-drilled mounting holes on the bed board to lock mounting bracket 1 to the bed board.

[0039] The heating element is an electric heating film or electric heating wire. The heating element is connected to an external power source via wires and has an external temperature control module to maintain the heating temperature between 35℃ and 40℃. The heating element is a flexible electric heating film embedded inside the medical elastic pad 25. The heating element is connected to the temperature control module and power module on the main control board of the device via wires. The wires have a length margin at the hinge area at the top of the two sets of application plates 21 that matches the maximum opening angle to prevent the application plates 21 from breaking the wires when they are folded into an inverted V-shape. During the application operation, the heating element automatically heats up and maintains the temperature within the preset range, so that the coupling agent is at a comfortable temperature when it comes into contact with the patient's skin. The main body of the medical elastic pad 25 is made of medical-grade liquid silicone material and is injection molded in one piece. The Shore hardness is set to 10A to 20A and the thickness is 5mm to 8mm. The good biocompatibility of liquid silicone ensures the safety of patient skin contact, and the low hardness property ensures the smooth fit of the medical elastic pad 25 when it tilts and folds with the application plate 21.

[0040] The multi-directional movement component drives the support 10 in the body surface contouring application component to move in multiple axes, meeting the three-dimensional spatial positioning needs of different body surface examination areas. The film changing mechanism includes a placement shaft 26, a winding drive motor 28, a waste roller 29, a constant tension spring 30, a damping shaft 31, and a tensioning arm 32. The placement shaft 26 is rotatably connected to one set of application plates 21, and the winding drive motor 28 is fixed to another set of application plates 21. The output end of the winding drive motor 28 is fixedly connected to the waste roller 29. The winding drive motor 28 provides a unidirectional torque to pull the medical film upward. The constant tension spring... The tension arm 30 is fixed on the coating plate 21 and located below the placement shaft 26. The tension arm 32 is fixed to the trigger end of the constant tension spring 30. The bias torque released by the constant tension spring 30 forces the tension arm 32 to keep the medical film in a downward tensioning state. The damping shaft 31 is fixed on the tension arm 32. The winding drive motor 28 adopts a 42 stepper motor with a planetary gearbox. The specific model can be 42BYGH47-401A. Relying on the speed reduction and torque increase physical characteristics of the planetary gearbox, it provides a low-speed and constant high torque output to the waste roller 29, avoiding jamming caused by insufficient power when pulling and winding the medical film.

[0041] The buffer elastic element includes a wave spring 20. The two ends of the wave spring 20 are fixed to the telescopic end of the electric push rod 15 and the inner wall of the slide cylinder 17, respectively. The wave spring 20 uses the self-damping characteristics generated by interlayer friction when compressed to filter out excess mechanical vibration. At the same time, the wave spring 20 provides non-linear incremental support elastic force within a limited physical compression stroke to avoid hard physical collisions when the electric push rod 15 applies downward pressure, thereby further improving the ability to adapt to the patient's breathing fluctuations.

[0042] The slide cylinder 17 has several sets of corresponding limiting grooves 18. The body surface contouring coating component also includes several sets of corresponding limiting strips 19, which provide anti-deflection linear guidance constraints for the relative movement between the telescopic end of the electric push rod 15 and the inner wall of the slide cylinder 17. The corresponding limiting strips 19 are fixedly assembled on the telescopic end of each electric push rod 15 and slidably connected in each limiting groove 18. The electric push rod 15 is a miniature DC electric push rod with a thrust range of 50N to 100N. The pressure sensor 16 is a miniature spoke-type load cell. The specific model can be DYLF-102 force sensor with a range of 0 to 5kg, so as to convert the small downward physical contact force of the electric push rod 15 into a high-precision electrical signal feedback to the main control system.

[0043] The multi-directional moving assembly includes motor 2, lead screw 3, moving frame 4, motor 5, lead screw 6, adjusting frame 7, motor 8, lead screw 9, and several sets of threaded sleeves. Motor 2 is fixed to the mounting frame 1, and its output end is fixedly connected to lead screw 3. Moving frame 4 is threadedly connected to lead screw 3 through a set of threaded sleeves, and simultaneously slides on the mounting frame 1 to restrict circumferential rotation and bear radial load. Motor 5 is fixed to moving frame 4, and its output end is fixedly connected to lead screw 6. Adjusting frame 7 is threadedly connected to lead screw 6 through a set of threaded sleeves, and simultaneously slides on moving frame 4 to restrict circumferential rotation and bear radial load, forming a longitudinal dimension. The motor 38 is fixed on the adjustment frame 7, and the output end of the motor 38 is fixedly connected to the lead screw 39, converting the rotational power of the motor 38 into vertical lifting thrust. The support seat 10 is threadedly connected to the lead screw 39 through a set of threaded sleeves, and the support seat 10 is also slidably assembled on the adjustment frame 7 to restrict circumferential rotation and bear radial load. Motor 12, Motor 25 and Motor 38 all adopt 57 closed-loop stepper motors, and the specific model can be 57HS56-3004. By utilizing the encoder anti-step loss characteristics of the closed-loop stepper motor, the physical coordinate accuracy of the support seat 10 in long-distance movement and lifting positioning in three-dimensional space is ensured, thus constituting the translational freedom in the lateral dimension.

[0044] The coating plate 21 has a collection port 38. The film replacement mechanism also includes a silicone scraper 36, a silicone scraper 37, a collection box 39, and a medical silicone one-way duckbill valve 41. The collection box 39 is installed inside the collection port 38. The silicone scraper 37 is fixed to the coating plate 21. The silicone scraper 36 and the silicone scraper 37 abut against each other. When the waste medical film is pulled upward by the winding drive motor 28, the silicone scraper 36 and the silicone scraper 37 clamp the ultrasonic coupling agent attached to the surface of the peeling film. The collection box 39 has a liquid inlet 40 to receive the ultrasonic coupling agent fluid that is blocked from falling from above. The medical silicone one-way duckbill valve 41 is fixed to the liquid inlet 40 and extends into the collection box 39 to prevent the fluid inside the collection box 39 from overflowing when the coating plate 21 tilts. The silicone scraper 36 and the silicone scraper 37 are also connected. All 7 are made of food-grade silicone with a Shore hardness of 60A and a thickness of 2mm. The medical-grade silicone one-way duckbill valve 41 is integrally injection molded from medical-grade liquid silicone. The lip remains closed under normal conditions, but opens due to elastic deformation under the fluid pressure squeezed by the scraper. The collection box 39 is made of medical-grade PP polypropylene. The inner wall of the collection box 39 is provided with a fish scale pattern, which forms an anisotropic micro-protrusion structure. When the coupling agent liquid adheres to the inner wall of the collection box 39, the protrusion structure can increase the resistance to liquid flow. When the coating plate 21 is tilted at an angle, it reduces the outward overflow of the coupling agent inside the collection box 39. Moreover, the micro-protrusion edges of the fish scale pattern are uniformly oriented towards the inner bottom of the collection box 39, so that the ultrasound coupling agent flowing in the forward direction is not obstructed, while the fluid sliding outward in the reverse direction is intercepted and stopped by the physical dead angle formed by the protrusion edges.

[0045] The medical membrane uses medical-grade TPU polyurethane film with a thickness of 0.02mm to 0.05mm. The excellent physical tensile strength of TPU material prevents cracking during machine traction and folding application. The good thermal conductivity of TPU material ensures that the heat from the internal heating element can be efficiently transferred to the ultrasonic coupling agent through the film. At the same time, the smooth and flat surface of the TPU film reduces sliding friction resistance, making it easy for the silicone scraper 36 and silicone scraper 37 to thoroughly scrape off the ultrasonic coupling agent attached to the film surface.

[0046] Each coating plate 21 has a positioning opening 33, and a positioning block 34 is provided inside the positioning opening 33. Each positioning block 34 is fixedly connected to a limiting block 27. Each limiting block 27 has a slot for placing the shaft 26 and the waste roller 29, providing rotational positioning and load-bearing support for the ends of the shaft 26 and the waste roller 29. The silicone scraper 36 is fixedly connected to any one of the limiting blocks 27. The collection box 39 is fixed to the limiting block 27, allowing the collection box 39 and the silicone scraper 36 to follow the limiting block 27. The positioning block 27 is inserted and removed as a whole. The coating plate 21 and the positioning block 27 are both provided with positioning ports 43. The outer wall of the opposite end of the silicone scraper 1 36 and silicone scraper 2 37 is fixed with a positioning shaft 42 that is inserted and cooperates with the positioning port 43. A fixing component is provided in the positioning port 33. The fixing component includes a magnetic block 35. The magnetic attraction generated by the magnetic block 35 maintains the spatial position stability of the internal assembly parts during the working process. The magnetic block 35 is fixed in the positioning port 33 and magnetically cooperates with the positioning block 27.

[0047] The mounting bracket 1 has an external main control system chassis, which integrates the main control board and supporting hardware driver modules. The main control system chassis establishes electrical and signal transmission connections with the contour drive motor 11, two sets of electric push rods 15, pressure sensor 16, motor 2, motor 5, motor 8 and winding drive motor 28 through wiring harnesses. Relying on the programmable logic program built into the main control board, the action commands of all power actuators are uniformly and centrally issued, and the contact force electrical signals collected and fed back by the pressure sensor 16 are received simultaneously to complete the automated and coordinated control of the physical operation of the entire set of equipment hardware.

[0048] It should be noted that before the application of this device, the ultrasound coupling agent can be manually applied to the patient's body surface by medical staff, or dripped onto the medical film below the application plate 21 through a conventional external independent infusion pump tube. The specific method of supplying the ultrasound coupling agent is a conventional technical means in this field and is not the focus of the innovative protection of this invention, so it will not be described in detail here.

[0049] Working principle:

[0050] First, the roll of medical disposable isolation film is placed on the placement shaft 26. The free end of the medical disposable isolation film is then wrapped around the damping shaft 31. The medical disposable isolation film is then pulled around the outer edge of one set of application plates 21 and pressed tightly against the bottom surface of two sets of medical elastic pads 25. Next, it is folded upwards from the outer edge of the other set of application plates 21, completely physically isolating the medical elastic pads 25 from the external space. Then, it passes through the gap between silicone scraper 1 36 and silicone scraper 2 37, and is finally fixed to the surface of the waste roller 29, completing the initial film loading preparation of the film changing mechanism. Based on the target area for ultrasound examination, the process is initiated. The multi-directional moving component consists of a motor 2 driving a lead screw 3 to rotate, which in turn drives a moving frame 4 to translate along the X-axis to directly above the target area. A motor 5 driving a lead screw 6 to rotate, which in turn drives an adjusting frame 7 to translate along the Y-axis to the corresponding position. A motor 8 driving a lead screw 9 to rotate, which in turn drives a support base 10 to descend along the Z-axis, bringing the body surface contouring application component closer to the patient's examination surface. The contouring drive motor 11 rotates, driving a bidirectional lead screw 12 to rotate in either the forward or reverse direction, causing two sets of displacement frames 14 to move closer or further apart on the bidirectional lead screw 12. This, in turn, pushes and pulls the slider 23 hinged at the bottom of the slide cylinder 17 to slide within the slide groove 22.

[0051] When the two sets of displacement frames 14 move away from each other to the sides, they pull the two sets of smearing plates 21 to unfold and maintain a horizontal state. When the two sets of displacement frames 14 move closer to each other towards the center, they squeeze the two sets of smearing plates 21 to rotate downwards around the top hinge point, presenting an inclined state. As the displacement frames 14 continue to move towards each other, the two sets of smearing plates 21 further fold inwards to form an inverted V-shape to conform to the curvature of the patient's body surface, avoiding the inclined surface 24 to prevent interference at the bottom edge of the smearing plates 21. This, combined with the medical elastic pad 25, completes the smearing operation. The two sets of electric push rods 15 extend downwards simultaneously, pushing the two sets of slide cylinders 17 downwards. The two sets of slide cylinders 17 drive the two sets of smearing plates 21 downwards, so that the medical elastic pad 25 contacts the patient's examination surface. The pressure sensor 16 then... The contact pressure output downward by the electric push rod 15 is monitored in real time. When the contact pressure reaches the preset threshold, the two sets of electric push rods 15 stop extending downward. The wave spring 20 absorbs the vertical displacement backlash caused by human breathing during the downward pressure of the electric push rod 15. The limiting strip 19 slides in the limiting groove 18 to provide anti-deflection linear guidance constraint for the relative movement between the telescopic end of the electric push rod 15 and the slide cylinder 17. The heating element inside the medical elastic pad 25 starts to work, heating the ultrasound coupling agent on the surface of the medical elastic pad 25, so that the ultrasound coupling agent is maintained at a suitable temperature close to body temperature. The multi-directional moving component drives the body surface contouring application component to move at a uniform speed along the preset application path to complete the uniform application of ultrasound coupling agent on the patient's examination surface.

[0052] After application, the application plate 21 returns to a horizontal position. The winding drive motor 28 drives the waste roller 29 to rotate, pulling the medical film upwards for winding and recycling. The placement shaft 26 simultaneously releases the clean medical film. The constant tension spring 30 releases the bias torque, driving the tension arm 32 to maintain the downward tension of the medical film. The damping shaft 31 moves synchronously with the tension arm 32 to maintain the tension stability of the medical film during transport. When the waste medical film is pulled, the mating silicone scraper 1 36 and silicone scraper 2 37 clamp and peel off the residual ultrasonic coupling agent on the surface of the medical film. The peeled ultrasonic coupling agent falls into the collection box 39 through the liquid inlet 40. The medical silicone one-way duckbill valve 41 on the liquid inlet 40 and the collection box 39 contain the ultrasonic coupling agent. The fish-scale pattern on the wall blocks the ultrasonic coupling agent, preventing the waste ultrasonic coupling agent from sliding outward and overflowing when the coating plate 21 is tilted. During equipment maintenance and cleaning, the limiting block 27 is pulled outward to overcome the magnetic attraction generated by the magnetic block 35, causing the limiting shaft 42 to disengage from the limiting port 43. This causes the collection box 39 and the silicone scraper 36 to be pulled out as a whole along with the limiting block 27, completing the overall disassembly of the limiting block 27, the placement shaft 26, the waste roller 29, the silicone scraper 36, and the collection box 39. After replacing the new medical disposable isolation film roll or cleaning the waste coupling agent inside the collection box 39, the positioning block 34 is aligned with the positioning port 33 and inserted. The magnetic block 35 attracts the positioning block 34, completing the reassembly of the film replacement mechanism.

[0053] Example 2:

[0054] Please see the appendix Figure 7 -Appendix Figure 8 The difference between Embodiment 2 and Embodiment 1 lies in the replacement of a different fixing component. Physical locking of the assembly position is achieved through the compressive deformation and rotational misalignment of the mechanical components. The positioning block 34 has a fixing opening 44, providing a transversely penetrating physical clearance channel for the internal locking components. The fixing component includes a fixing block 45, a first rod 46, a coil spring 47, a second rod 48, and a telescopic spring 49, which work together to form a press-type self-locking mechanism with linear buffering and self-rotation reset functions. The second rod 48 is elastically connected to the positioning opening 33 via the telescopic spring 49. The axial thrust generated when the telescopic spring 49 is compressed maintains the basic support state of the second rod 48 pushing outward. The first rod 46 is elastically rotated on the second rod 48 through the coil spring 47, allowing the first rod 46 to overcome the torsional torque of the coil spring 47 and deflect at an angle when compressed, and automatically reset after the external force is released. The fixing block 45 is fixed on the first rod 46 and can pass through the fixing hole 44. After passing through the fixing hole 44, the fixing block 45 and the fixing hole 44 rebound by the torsional force of the coil spring 47, so that the fixing block 45 and the fixing hole 44 form a cross shape in space, thereby forming a physical anti-disengagement misalignment interception state.

[0055] Beneficial effects of Example 2:

[0056] Based on Embodiment 1, by replacing the magnetic suction assembly with a purely mechanical locking mechanism consisting of a fixing block 45, rod 1 46, coil spring 47, rod 2 48, and telescopic spring 49, the problem of magnetic force attenuation that may occur in the magnetic components during long-term use or in specific medical environments is avoided. The physical misalignment of the fixing block 45 after it passes through the fixing port 44 and is rebounded by the torque of the coil spring 47 is used to construct a reliable mechanical anti-detachment structure, which improves the physical connection stability of the internal assembly components during equipment operation.

[0057] Example 3:

[0058] Please see the appendix Figure 9 -Appendix Figure 10 The difference between Embodiment 3 and Embodiment 2 of the present invention lies in the replacement of a different fixing component, providing a static self-locking replacement structure based on the interlacing of geometric shapes and physical tooth surfaces. The fixing component includes a fixing cone 50, a fixing cone 51, several sets of engagement 1 52, and several sets of engagement 2 53. The tapered taper of the fixing cone 50 and the fixing cone 51 provides assembly guidance and extrusion force. The fixing cone 50 is fixed to the positioning port 33, making the fixing cone 50 act as the female end cavity for receiving the assembled component. The fixing cone 51 is fixed to the positioning block 34, making the fixing cone 51 act as the male end boss that is pushed into the interior of the fixing cone 50 by force. Each engagement 1 52 is fixed in a circumferential array at equal intervals on the inner surface of the fixing cone 50, and the engagement 1 52 constructs a surrounding solid structure. The static anti-reverse groove inside the fixed cone cylinder 50, and each biting block 53 is fixed equidistantly in a circumferential array on the outer surface of the fixed cone block 51. Each biting block 53 forms an array of convex teeth that correspond to the biting block 52 in spatial position and generate radial interference. At least one of the biting block 52 and the biting block 53 is made of elastic rubber or medical silicone. Because the biting block 52 or the biting block 53 is made of elastic material, when the fixed cone block 51 is pushed in, the tooth surface is squeezed and undergoes elastic deformation and interlocks with each other over the crest. The friction and elastic recovery force between the tooth surfaces form a damping and resisting force, thereby forming an elastic interference locking structure that prevents the positioning block 34 from accidentally falling off due to slight external force. When the membrane needs to be replaced, an external force greater than the damping and resisting force can be applied to pull it out in the opposite direction.

[0059] Beneficial effects of Example 3:

[0060] Based on Embodiment 1, a purely static geometric self-locking system is constructed by using a fixed cone 50 and a fixed cone block 51 to replace magnetic components that are at risk of demagnetization and moving mechanical components that are prone to fatigue failure. The tapered shape inside the fixed cone 50 provides physical guidance and centering alignment for the pushing action of the fixed cone block 51. The toothed surface misalignment and interlocking formed by the mutual squeezing of the bite block 52 and bite block 53 distributed on the surface constitutes an anti-detachment interception structure, ensuring the reliability of physical locking after the positioning block 34 is embedded in the positioning port 33.

[0061] 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. An automatic heating and application device for medical ultrasound coupling agent, characterized in that, include Mounting bracket (1); A body surface contouring application assembly includes a support base (10), a contouring drive motor (11), a bidirectional lead screw (12), two sets of displacement frames (14), two sets of nut sleeves, two sets of electric push rods (15), a pressure sensor (16), two sets of slide cylinders (17), a buffer elastic element, two sets of application plates (21), two sets of sliders (23), and a medical elastic pad (25). The support base (10) is disposed outside the mounting frame (1). The contouring drive motor (11) is fixed on the support base (10). The output end of the contouring drive motor (11) is fixedly connected to the bidirectional lead screw (12). Each of the displacement frames (14) is threadedly connected to the bidirectional lead screw (12) through a nut sleeve. Each of the electric push rods... The rod (15) is fixed on each displacement frame (14), the pressure sensor (16) is fixed on the electric push rod (15), the telescopic end of the electric push rod (15) is elastically connected to the slide cylinder (17) through a buffer elastic element, each of the coating plates (21) is provided with a slide groove (22), each of the sliders (23) is slidably assembled in each slide groove (22), and the bottom end of each slide cylinder (17) is hinged to each slider (23). The top of the opposite side of the two sets of coating plates (21) is hinged by a hinge, and the bottom end is provided with a relief slope (24). The medical elastic pad (25) is fixed to the bottom of the two sets of coating plates (21), and the medical elastic pad (25) is provided with a heating element for heating the coupling agent. A multi-directional moving component is disposed on the mounting bracket (1) and is used to drive the support seat (10) in the body surface contouring application component to move in multiple axes. The film changing mechanism includes a placement shaft (26), a winding drive motor (28), a waste roller (29), a constant tension spring (30), a damping shaft (31), and a tensioning arm (32). The placement shaft (26) is rotatably connected to one set of coating plates (21). The winding drive motor (28) is fixed to another set of coating plates (21). The output end of the winding drive motor (28) is fixedly connected to the waste roller (29). The constant tension spring (30) is fixed to the coating plate (21) and located below the placement shaft (26). The tensioning arm (32) is fixed to the trigger end of the constant tension spring (30). The damping shaft (31) is fixed to the tensioning arm (32).

2. The automatic heating and application device for medical ultrasound coupling agent according to claim 1, characterized in that, The buffer elastic element includes a wave spring (20), the two ends of which are fixed to the telescopic end of the electric push rod (15) and the inner wall of the slide cylinder (17), respectively.

3. The automatic heating and application device for medical ultrasound coupling agent according to claim 1, characterized in that, The slide cylinder (17) has several sets of corresponding limiting grooves (18), and the body surface contouring coating component also includes several sets of corresponding limiting strips (19). The corresponding limiting strips (19) are fixedly assembled on the telescopic ends of each electric push rod (15) and slidably connected in each limiting groove (18).

4. The automatic heating and application device for medical ultrasound coupling agent according to claim 1, characterized in that, The multi-directional moving assembly includes a motor (2), a lead screw (3), a moving frame (4), a motor (5), a lead screw (6), an adjusting frame (7), a motor (8), a lead screw (9), and several sets of threaded sleeves. The motor (2) is fixed on the mounting frame (1), and the output end of the motor (2) is fixedly connected to the lead screw (3). The moving frame (4) is threadedly connected to the lead screw (3) through a set of threaded sleeves. The motor (5) is fixed on the moving frame (4), and the output end of the motor (5) is fixedly connected to the lead screw (6). The adjusting frame (7) is threadedly connected to the lead screw (6) through a set of threaded sleeves. The motor (8) is fixed on the adjusting frame (7), and the output end of the motor (8) is fixedly connected to the lead screw (9). The support base (10) is threadedly connected to the lead screw (9) through a set of threaded sleeves.

5. The automatic heating and application device for medical ultrasound coupling agent according to claim 1, characterized in that, The coating plate (21) is provided with a receiving port (38). The membrane changing mechanism also includes a silicone scraper (36), a silicone scraper (37), a collection box (39), and a medical silicone one-way duckbill valve (41). The collection box (39) is assembled in the receiving port (38). The silicone scraper (37) is fixed on the coating plate (21). The silicone scraper (36) and the silicone scraper (37) are in contact with each other. The collection box (39) is provided with a liquid inlet (40). The medical silicone one-way duckbill valve (41) is fixed on the liquid inlet (40) and extends into the collection box (39) to prevent the fluid inside the collection box (39) from overflowing when the coating plate (21) is tilted.

6. The automatic heating and application device for medical ultrasound coupling agent according to claim 5, characterized in that, The inner wall of the collection box (39) is decorated with fish scale patterns.

7. The automatic heating and application device for medical ultrasound coupling agent according to claim 5, characterized in that, Each of the coating plates (21) is provided with a positioning port (33), and a positioning block (34) is provided in the positioning port (33). Each positioning block (34) is fixedly connected with a limiting block (27). Each limiting block (27) is provided with a slot for placing the shaft (26) and the waste roller (29). The first silicone scraper (36) is fixedly connected to any one of the limiting blocks (27). The collection box (39) is fixed on the limiting block (27). Both the coating plate (21) and the limiting block (27) are provided with limiting ports (43). The outer wall of the opposite end of the first silicone scraper (36) and the second silicone scraper (37) is fixed with a limiting shaft (42) that is inserted into the limiting port (43).

8. The automatic heating and application device for medical ultrasound coupling agent according to claim 7, characterized in that, A fixing component is provided inside the positioning port (33). The fixing component includes a magnetic block (35). The magnetic block (35) is fixed inside the positioning port (33) and magnetically engages with the limiting block (27).

9. The automatic heating and application device for medical ultrasound coupling agent according to claim 7, characterized in that, The positioning block (34) has a fixing port (44). The fixing component includes a fixing block (45), a first rod (46), a coil spring (47), a second rod (48), and a telescopic spring (49). The second rod (48) is elastically connected to the positioning port (33) through the telescopic spring (49). The first rod (46) is elastically rotated on the second rod (48) through the coil spring (47). The fixing block (45) is fixed on the first rod (46) and can pass through the fixing port (44).

10. The automatic heating and application device for medical ultrasound coupling agent according to claim 7, characterized in that, The fixing assembly includes a fixing cone (50), a fixing cone (51), several sets of engagement first (52) and several sets of engagement second (53). The fixing cone (50) is fixed on the positioning port (33), the fixing cone (51) is fixed on the positioning block (34), each engagement first (52) is fixed in a circumferential array at equal intervals on the inner surface of the fixing cone (50), and each engagement second (53) is fixed in a circumferential array at equal intervals on the outer surface of the fixing cone (51). The engagement first (52) and engagement second (53) engage in a meshing fit.

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