A device for aspirating tympanic fluid in the middle ear

Abstract

The present invention relates to the field of medical device technology, and in particular to a middle ear tympanic cavity effusion suction device, comprising a puncture needle, the bottom end of the puncture needle is fixedly connected to a hose, the right end of the hose is fixedly connected to a suction port of a suction tube, the puncture needle and the outer side of the suction tube are jointly provided with an auxiliary fixing mechanism, the auxiliary fixing mechanism comprises a movable seat, a deceleration and limiting mechanism is provided at the upper left end of the movable seat, a rotating seat is rotatably provided on the inner side of the connecting plate near the upper end, and a high-efficiency negative pressure mechanism is provided at the bottom end of the rotating seat and on the outer side of the hose. The present invention installs the puncture needle, the hose and the suction tube on the auxiliary fixing mechanism, thereby realizing precise position adjustment of the puncture needle according to the position of the tympanic membrane of different patients, the deceleration and limiting mechanism ensures the controllable puncture speed and depth, and the high-efficiency negative pressure mechanism can effectively control the air and liquid circulation state inside the hose through the forward button and the reverse button.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a device for aspirating tympanic fluid in the middle ear. Background Art

[0002] Tympanic effusion is often caused by ear conditions such as otitis media and otitis externa. Excessive accumulation can lead to a range of uncomfortable symptoms, including hearing loss, tinnitus, and earache. To alleviate these symptoms and reduce pressure in the middle ear, doctors often recommend draining the effusion, effectively improving the patient's ear health.

[0003] Among the existing public patents, the announcement number is CN209645223U and the patent name is A Tympanic Membrane Puncture Negative Pressure Suction Device. The tympanic membrane puncture negative pressure suction device includes a hose, a negative pressure maintaining device, a switch assembly and a handle. The hose has a puncture needle side interface and a negative pressure maintaining device side interface. The switch assembly has an operating part and a clamping part. The clamping part can clamp the hose between the negative pressure maintaining device side interface and the puncture needle side interface to block the fluid communication between the puncture needle side interface and the negative pressure maintaining device side interface. The operating part is partially installed on the outside of the handle and can operate the clamping part to loosen the hose. The negative pressure maintaining device can form and maintain negative pressure. The negative pressure maintaining device is in fluid communication with the hose through the negative pressure maintaining device side interface. When performing the tympanic membrane puncture operation, the suction device can be operated with one hand to achieve suction of fluid accumulated in the tympanic cavity, thereby reducing the operation time and improving the operation effect.

[0004] The process of extracting tympanic fluid requires high stability, but the device lacks an auxiliary fixing mechanism that can be adapted to the ear side of different patients. This inevitably causes shaking during subsequent use, thus affecting the safety of the extraction process.

[0005] In addition, the device lacks a corresponding deceleration and limiting mechanism when the puncture needle is about to be inserted into the patient's eardrum, which makes it difficult for the doctor to accurately control the speed and depth of the puncture needle inserted into the patient's eardrum during operation, increasing the risk of operation. Finally, when operating the negative pressure maintaining device in the device, the doctor needs to use the index finger to assist in pressing for a long time to change the flow state of the hose. However, long-term pressing not only increases the difficulty of the doctor's operation, but may also affect the efficiency and smoothness of the effusion extraction due to hand slippage and other situations. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a device for aspirating fluid from the middle ear tympanic cavity.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a device for aspirating tympanic fluid in the middle ear, comprising a puncture needle, the bottom end of which is fixedly connected to a hose, the right end of which is fixedly connected to a suction port of a suction tube, and a piston rod movably mounted on the inner side of the suction tube;

[0008] An auxiliary fixing mechanism is provided on the outer side of the puncture needle and the suction tube. The auxiliary fixing mechanism includes a movable seat. A sliding frame is provided on the left side of the movable seat. Two connecting plates are fixedly installed on the left end of the sliding frame. The auxiliary fixing mechanism can fix the puncture needle and the suction tube to the external auxiliary device on the patient's ear side.

[0009] A deceleration and limiting mechanism is provided at the upper left end of the movable seat, and the deceleration and limiting mechanism includes a pressure plate that can be elastically moved upward, an inclined pressure surface is provided on the right side of the pressure plate, and an inclined resistance surface is provided on the upper surface of the sliding frame at the right end to cooperate with the inclined pressure surface;

[0010] A rotating seat is rotatably provided on the inner side of the connecting plate near the upper end, and a high-efficiency negative pressure mechanism is provided at the bottom end of the rotating seat and on the outside of the hose. The high-efficiency negative pressure mechanism includes an arc-conical extrusion seat, which can effectively control the circulation state of air and liquid inside the hose.

[0011] Preferably, the auxiliary fixing mechanism also includes a mounting frame, a fixing cylinder is fixedly installed on the upper surface of the mounting frame and at the front and rear ends, a fixing rod is slidably inserted into the inner side of the fixing cylinder, a fixing block is fixedly installed on the right side of the bottom end of the fixing rod, and a plurality of fixing holes that are snap-fitted with the fixing block are opened on the right side of the fixing cylinder.

[0012] Preferably, a connecting shaft is fixedly installed in the middle of the inner side of the mounting frame, and two groups of connecting parts are slidably sleeved on the outer surface of the connecting shaft near the upper and lower ends. The outer ends of the two groups of connecting parts are respectively fixedly connected to clamping plates, and the left ends of the two clamping plates are respectively fixedly installed with arc-shaped clamping parts, and a torsion spring is sleeved in the middle of the outer surface of the connecting shaft.

[0013] Preferably, the upper and lower ends of the torsion spring are respectively extended to the inner sides of the two clamping plates, a support frame is fixedly installed at the right end of the upper surface of the movable seat, a fixed shaft is rotatably installed at the inner rear end of the support frame, the upper side of the fixed shaft is fixedly connected to a fixing frame, two clamping blocks are fixedly installed at the front bottom end of the fixing frame, and a clamping hole that cooperates with the clamping block is opened at the corresponding part of the support frame.

[0014] Preferably, a mounting shaft is rotatably installed at the upper inner ends of the two connecting plates, a rotating seat is fixedly mounted at the middle of the outer surface of the mounting shaft, resistance rubber rings are respectively mounted at the connection points between the mounting shaft and the outer surfaces of both ends of the two connecting plates, an assembly seat is snap-fitted on the front side of the rotating seat, a buckling groove is provided on the upper side of the assembly seat, a push ring is fixedly installed at the left side of the upper end of the connecting plate, and the bottom end bending part of the puncture needle is fixedly installed in the fixed grooves respectively provided on the inner sides of the rotating seat and the assembly seat.

[0015] Preferably, the deceleration and limiting mechanism also includes two sliding rods, an I-shaped slide groove is provided at the inner left end of the moving seat, the outer side of the sliding frame slides with the inner side of the I-shaped slide groove, the two sliding rods are slidably inserted at the upper left end of the moving seat, the upper end of the sliding rod is fixedly installed with a limiting column, the outer surface of the front sliding rod is provided with a spring, the lower surface of the limiting column is fixedly connected to the upper and lower ends of the spring at the upper left end of the moving seat, the bottom ends of the two sliding rods are fixedly connected to the upper surface of the pressure plate, and the two sides of the pressure plate slide with the middle of the inner side of the I-shaped slide groove.

[0016] Preferably, the high-efficiency negative pressure mechanism also includes an assembly frame, which is fixedly mounted on the bottom side of the rotating seat, and a mounting plate is fixedly mounted at the middle of the inner side of the assembly frame. The front and rear sides of the assembly frame are respectively provided with movable grooves, and a fixed plate is fixedly mounted on the inner side of the movable groove and near the upper right end. A threaded rod is rotatably mounted on the inner side of the movable groove on the front side and the front fixed plate, and a connecting rod is fixedly mounted on the inner side of the movable groove on the rear side and the rear fixed plate, and sliding parts are fixedly mounted on the front and rear sides of the bottom end of the arc-conical extrusion seat.

[0017] Preferably, the outer sides of the two sliding members are respectively slidably matched with the inner sides of the two movable grooves, the inner side of the front sliding member is threadedly matched with the outer surface of the threaded rod, and the inner side of the rear sliding member is slidably matched with the outer surface of the connecting rod. The upper right end of the threaded rod is fixedly connected to the motor, and the bottom side of the motor is fixedly mounted on the fixed plate through a connecting member. A battery is fixedly embedded on the assembly frame near the upper side of the motor, and a forward button and a reverse button are sequentially installed on the upper end of the rotating seat near the right side. The forward button is set to be a raised type, and the reverse button is set to be embedded. A control unit is installed inside the rotating seat.

[0018] Preferably, a micro-imager is provided at the head end of the rotating seat, and one end of the micro-imager is connected to a battery.

[0019] Preferably, there is an axial connection structure between the rotating seat and the connecting plate, one end of which is provided with a micro forward and reverse motor connected to its rotating shaft; the micro forward and reverse motor is arranged on the connecting plate; internal gears are provided on both sides of the rotating seat, located at the junction of the rotating seat and the connecting plate, which form a gear match with the external gear on the rotating shaft to drive the rotating seat to move.

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

[0021] The present invention achieves precise position adjustment of the puncture needle according to the position of the tympanic membrane of different patients by installing the puncture needle, hose and suction tube on the auxiliary fixing mechanism, avoiding shaking during the subsequent puncture process, thereby significantly improving the safety and stability of the effusion extraction process.

[0022] The deceleration and limiting mechanism provided in the present invention can effectively control the speed and depth of the puncture needle when it is inserted into the patient's tympanic membrane, which not only reduces the risk of operational errors, but also ensures the accuracy and safety of the puncture process. In addition, the present invention also provides a high-efficiency negative pressure mechanism, which can effectively control the circulation state of air and liquid inside the hose through the forward button and the reverse button, thereby facilitating the subsequent more efficient and smooth extraction of the accumulated fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a device for aspirating tympanic fluid in the middle ear according to the present invention;

[0024] Figure 2 This is a schematic structural diagram of the main mechanisms of a device for aspirating tympanic fluid in the middle ear of the present invention;

[0025] Figure 3 This is a schematic structural diagram of the interior of a fixed cylinder in a device for aspirating tympanic fluid in the middle ear of the present invention;

[0026] Figure 4 This is a structural schematic diagram of a movable seat in a device for aspirating tympanic fluid in the middle ear of the present invention;

[0027] Figure 5 This is a schematic structural diagram of a deceleration and limiting mechanism, a sliding frame, and a movable seat in a device for aspirating tympanic cavity effusion of the present invention;

[0028] Figure 6 This is a schematic structural diagram of a rotating seat in a device for aspirating tympanic fluid in the middle ear of the present invention;

[0029] Figure 7 This is a schematic structural diagram of a rotating seat and a high-efficiency negative pressure mechanism in a device for aspirating tympanic fluid in the middle ear of the present invention;

[0030] Figure 8This is a schematic structural diagram of a high-efficiency negative pressure mechanism in a device for aspirating tympanic fluid in the middle ear of the present invention;

[0031] Figure 9 This is a schematic structural diagram of a rotating seat in a device for aspirating tympanic fluid in the middle ear of the present invention;

[0032] Figure 10 for Figure 9 CC view (not drawn to scale);

[0033] Figure 11 for Figure 2 A partial enlarged schematic diagram of part A.

[0034] In the figure: 1. puncture needle; 2. flexible tube; 3. suction tube; 4. piston rod; 5. movable seat; 6. push ring; 7. sliding frame; 8. connecting plate; 9. inclined pressure surface; 10. inclined resistance surface; 11. rotating seat; 12. arc-conical extrusion seat; 13. mounting frame; 14. fixing cylinder; 15. fixing rod; 16. fixing block; 17. connecting shaft; 18. clamping plate; 19. arc-shaped clamping member; 20. torsion spring; 21. supporting frame; 22. fixing shaft; 23. fixing frame; 24. Mounting shaft; 25. Assembly seat; 26. Sliding rod; 27. I-shaped slide; 28. Spring; 29. ​​Assembly frame; 30. Mounting plate; 31. Moving groove; 32. Threaded rod; 33. Connecting rod; 34. Fixed plate; 35. Battery; 36. Forward button; 37. Motor; 38. Limiting column; 39. Pressing plate; 40. Reverse button; 41. External gear; 42. Internal gear; 43. Rotating shaft; 44. Micro forward and reverse motor; 45. Micro imager. DETAILED DESCRIPTION

[0035] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0036] like Figures 1-11 The device shown in the figure for aspirating fluid from the middle ear tympanic cavity comprises a puncture needle 1, the bottom end of the puncture needle 1 is fixedly connected to a hose 2, the right end of the hose 2 is fixedly connected to the suction port of a suction tube 3, a piston rod 4 is movably installed on the inner side of the suction tube 3, and when the piston rod 4 is pulled, the piston rod 4 draws air away from the inside of the hose 2 through the suction tube 3, so that a negative pressure state is formed inside the hose 2 and the suction tube 3.

[0037] The puncture needle 1 and the outer side of the suction tube 3 are jointly provided with an auxiliary fixing mechanism, which includes a movable seat 5, a sliding frame 7 is slidingly provided on the left side of the movable seat 5, and two connecting plates 8 are fixedly installed on the left end of the sliding frame 7. The auxiliary fixing mechanism can fix the puncture needle 1 and the suction tube 3 to the external auxiliary equipment on the patient's ear side (which can be a chair or a bed). The auxiliary fixing mechanism also includes a mounting frame 13, and a fixing cylinder 14 is fixedly installed on the upper surface of the mounting frame 13 and located at the front and rear ends. A fixing rod 15 is slidably inserted into the inner side of the fixing cylinder 14, and a fixing block 16 is fixedly installed on the right side of the bottom end of the fixing rod 15. A plurality of fixing holes that are card-fitted with the fixing block 16 are opened on the right side of the fixing cylinder 14. A connecting shaft 17 is fixedly installed in the middle of the inner side of the frame 13, and two groups of connecting parts are slidably sleeved on the outer surface of the connecting shaft 17 near the upper and lower ends. The outer ends of the two groups of connecting parts are respectively fixedly connected with clamping plates 18, and the left ends of the two clamping plates 18 are respectively fixedly installed with arc-shaped clamping parts 19. A torsion spring 20 is sleeved in the middle of the outer surface of the connecting shaft 17, and the upper and lower ends of the torsion spring 20 are respectively connected to the inner sides of the two clamping plates 18. The doctor uses his fingers to hold the two clamping plates 18 respectively. Through the action of the two clamping plates 18, the two arc-shaped clamping parts 19 will rotate outward. Then, the doctor quickly clamps the two arc-shaped clamping parts 19 on the chair or bedside on the side of the patient's ear where the effusion needs to be extracted.

[0038] A support frame 21 is fixedly installed at the right end of the upper surface of the movable seat 5, and a fixed shaft 22 is rotatably installed at the inner rear end of the support frame 21. The upper side of the fixed shaft 22 is fixedly connected to the fixed frame 23, and two clamping blocks are fixedly installed at the front bottom end of the fixed frame 23, and a clamping hole that is clamped with the clamping block is opened at the corresponding part of the support frame 21. After the movable seat 5 is pulled upward, the fixing rod 15 continues to slide upward to a suitable height inside the fixing cylinder 14, and the fixing block 16 installed at the bottom end of the fixing rod 15 is clamped with the fixing hole opened at the corresponding part of the fixing cylinder 14. The doctor pulls the fixing frame 23 upward so that the clamping block at the bottom end of the fixing frame 23 is removed from the clamping hole at the upper end of the support frame 21.

[0039] The mounting shaft 24 is rotatably installed at the inner upper end of the two connecting plates 8, and a rotating seat 11 is fixedly installed in the middle of the outer surface of the mounting shaft 24. Resistance rubber rings are respectively installed at the connection points between the mounting shaft 24 and the outer surfaces of both ends of the two connecting plates 8. The front side of the rotating seat 11 is snap-fitted with an assembly seat 25, and a detent groove is provided on the upper side of the assembly seat 25. The doctor removes the assembly seat 25 from one side of the rotating seat 11 through the detent groove, and then removes the puncture needle 1 from the two. A pushing ring 6 is fixedly installed at the left side of the upper end of the connecting plate 8, and the bottom end bending part of the puncture needle 1 is fixedly installed in the fixed grooves respectively provided on the inner sides of the rotating seat 11 and the assembly seat 25. The rotating seat 11 is rotated to make the puncture needle 1 tilt downward to a suitable angle. Since resistance rubber rings are respectively provided at both ends of the mounting shaft 24, the puncture needle 1 can be stably fixed and maintained at the required angle.

[0040] The upper left end of the movable seat 5 is provided with a deceleration limit mechanism, which includes a pressure plate 39 that can be elastically moved upward, and an inclined pressure surface 9 is provided on the right side of the pressure plate. The upper surface of the sliding frame 7 is located at the right end and is provided with an inclined resistance surface 10 that cooperates with the inclined pressure surface 9. The deceleration limit mechanism also includes two sliding rods 26. An I-shaped slide groove 27 is provided at the inner left end of the movable seat 5, and the outer side of the sliding frame 7 slides with the inner side of the I-shaped slide groove 27. The two sliding rods 26 are slidably inserted at the upper left end of the movable seat 5, and the upper end of the sliding rod 26 is fixedly installed with a limiting column 38. The outer surface of the front sliding rod 26 is covered with a spring 28. The lower surface of the limiting column 38 is fixedly connected to the upper and lower ends of the spring 28 at the upper left end of the movable seat 5. The bottom ends of the two sliding rods 26 are fixedly connected to the upper surface of the pressure plate 39, and the two sides of the pressure plate 39 slide with the middle of the inner side of the I-shaped slide groove 27. When the puncture needle 1 successfully punctures the patient's tympanic membrane, the doctor stops moving the sliding frame 7. At this time, the elastic pressure plate 39 provided on the upper side of the sliding frame 7 is subjected to the elastic force of the spring 28, which can effectively limit the sliding frame 7 and fix it in the I-shaped slot 27 of the moving seat 5.

[0041] A rotating seat 11 is rotatably provided on the inner side of the connecting plate 8 near the upper end, and a high-efficiency negative pressure mechanism is provided at the bottom end of the rotating seat 11 and on the outside of the hose 2. The high-efficiency negative pressure mechanism includes an arc-cone extrusion seat 12, which can effectively control the circulation state of air and liquid inside the hose 2. The high-efficiency negative pressure mechanism also includes an assembly frame 29, which is fixedly mounted on the bottom side of the rotating seat 11, and a mounting plate 30 is fixedly mounted at the middle of the inner side of the assembly frame 29. A movable groove 31 is respectively provided on the front and rear sides of the assembly frame 29, and a fixed plate 34 is fixedly mounted on the inner side of the movable groove 31 and near the upper right end. A threaded rod 32 is rotatably installed on the inner side of the front movable groove 31 and the front fixed plate 34, and a connecting rod 3 is fixedly mounted on the inner side of the rear movable groove 31 and the rear fixed plate 34. 3. Sliders are fixedly installed on the front and rear sides of the bottom end of the arc-conical extrusion seat 12 respectively. The outer sides of the two slides are slidably matched with the inner sides of the two movable grooves 31 respectively. The inner side of the front slide is threadedly matched with the outer surface of the threaded rod 32, and the inner side of the rear slide is slidably matched with the outer surface of the connecting rod 33. The upper right end of the threaded rod 32 is fixedly connected to the motor 37. The bottom side of the motor 37 is fixedly mounted on the fixed plate 34 through a connector. A battery 35 is fixedly embedded on the assembly frame 29 near the upper side of the motor 37. A forward button 36 and a reverse button 40 are installed in sequence on the upper end of the rotating seat 11 near the right side. The forward button 36 is configured to be a raised type, and the reverse button 40 is configured to be embedded. A control unit is installed inside the rotating seat 11. Press the reverse button 40 downward to make the motor 37 drive the threaded rod 32 to rotate in the opposite direction, thereby driving the arc-conical extrusion seat 12 to move along the inner side of the assembly frame 29 to the upper right until it cooperates with the mounting plate 30 to perform an extrusion and blocking operation on one side of the hose 2. Then, press the reverse button 40 again to stop the motor 37 from reversing; press the forward button 36 downward to start the motor 37, so that it drives the threaded rod 32 to rotate forward. The threaded rod 32 makes the arc-conical extrusion seat 12 move along the inner side of the assembly frame 29 to the lower left to the side away from the hose 2. After the hose 2 rebounds, press the forward button 36 again to stop the motor 37. At this time, the accumulated fluid in the tympanic membrane is smoothly drawn away through the hose 2 and the suction tube 3 under the action of negative pressure.

[0042] To further enhance visibility into the ear canal, a miniature imager is installed at the tip of the rotating base, one end of which is connected to a battery. This miniature imager, commonly used in the field, provides imaging for the doctor, with both wireless and wired transmission capabilities. The doctor can use the wireless receiver to clearly understand the patient's ear canal, facilitating accurate puncture.

[0043] In addition, see Figure 9-10The present invention also has a second embodiment for the rotation method between the rotating seat and the connecting plate. Specifically, it can be set to electric control. A micro forward and reverse motor is provided at one end of the rotating shaft between the rotating seat and the connecting plate. The micro forward and reverse motor drives the rotating shaft and cooperates with the external gear provided on its rotating shaft and the internal gear on the rotating seat to drive the rotating seat to move. The specific structure is that the rotating seat and the connecting plate are connected by an axial connection structure (i.e., connected by a rotating shaft), and one end is provided with a micro forward and reverse motor connected to its rotating shaft. The micro forward and reverse motor can be controlled by wire or wirelessly. The doctor only needs to hold the control device to achieve fine rotation of the rotating seat, which can effectively avoid the problem of inaccurate manual rotation and the need for long-term adjustment. The control method of this technology is a common technical means and will not be elaborated in detail in this invention. The micro forward and reverse motor is arranged on the connecting plate; internal gears are provided on both sides of the rotating seat, located at the junction of the rotating seat and the connecting plate. They form a gear cooperation with the external gear on the rotating shaft to drive the rotating seat to move.

[0044] During use, the patient sits upright on the medical chair. The doctor then uses his fingers to respectively hold the two clamping plates 18. Through the action of the two clamping plates 18, the two arc-shaped clamping members 19 will rotate outward. Then, the doctor quickly clamps the two arc-shaped clamping members 19 on the medical chair on the side of the patient's ear where the effusion needs to be drained.

[0045] Afterwards, the piston rod 4 is pulled, and the piston rod 4 draws away the air inside the hose 2 through the suction tube 3, so that a negative pressure state is formed inside the hose 2 and the suction tube 3. The doctor holds the endoscope in one hand to expose the patient's eardrum. Then, according to the position of the eardrum in the patient's ear canal, the doctor pulls the movable seat 5 upward with the other hand, so that the fixing rod 15 slides upward inside the fixing cylinder 14 to a suitable height. The fixing block 16 installed at the bottom end of the fixing rod 15 is snap-fitted with the fixing hole opened at the corresponding position of the fixing cylinder 14. Then, the rotating seat 11 is rotated to tilt the puncture needle 1 downward to a suitable angle. Since resistance rubber rings are respectively provided at both ends of the mounting shaft 24, the puncture needle 1 can be stably fixed and maintained at the desired angle.

[0046] When the puncture needle 1 is successfully punctured, the doctor stops moving the sliding frame 7. At this time, the doctor passes through the inner sides of the pushing rings 6 installed on the upper ends of the two connecting plates 8, and then presses on the rotating seat 11 and the assembly seat 25. Then, the puncture needle 1, the connecting plate 8 and the sliding frame 7 are tilted and pushed to continuously move toward the patient's eardrum. Since the patient's ear canal has a certain depth, when the sliding frame 7 starts to slide, there is no resistance between the smooth part of its upper side and the elastically movable pressure plate 39 above. However, when the inclined resistance surface 10 in the sliding frame 7 slides to the pressure plate 39, the inclined pressure surface 9 on the bottom side of the pressure plate 39 cooperates with the inclined resistance surface 10 of the sliding frame 7 to generate resistance, thereby effectively slowing down the speed of the doctor when he is about to pierce the patient's eardrum, playing a certain deceleration and buffering effect. When the puncture needle 1 successfully punctures the patient's eardrum, the doctor stops moving the sliding frame 7. At this time, due to the elastic pressure plate 39 provided on the upper side of the sliding frame 7 being acted upon by the elastic force of the spring 28, the sliding frame 7 can be effectively fixed in the I-shaped slide groove 27 of the moving seat 5.

[0047] Next, the doctor presses the forward button 36 downward with the index finger of his other hand to start the motor 37, which drives the threaded rod 32 to rotate forward. The threaded rod 32 causes the arc-conical extrusion seat 12 to move to the lower left along the inner side of the assembly frame 29 to the side away from the hose 2. After the hose 2 rebounds, the forward button 36 is pressed again to stop the motor 37. At this time, the effusion in the tympanic membrane is successfully drained away through the hose 2 and the suction tube 3 under the action of negative pressure. After the effusion is drained, the doctor pulls the puncture needle 1 backward to remove it from the patient's ear canal.

[0048] Afterwards, the doctor removes the assembly seat 25 from one side of the rotating seat 11 by depressing the slot, and then removes the puncture needle 1 from the two. Next, the doctor pulls the fixing frame 23 upwards so that the clamping block at the bottom end of the fixing frame 23 is removed from the clamping hole at the upper end of the support frame 21. After that, the doctor pulls out the puncture needle 1 from the hose 2, so that the puncture needle 1, the hose 2 and the suction tube 3 are completely removed from the auxiliary fixing mechanism. Subsequently, the used disposable components are discarded into the medical waste bin. Finally, the doctor performs ultraviolet disinfection on the auxiliary fixing mechanism, the deceleration limit mechanism and the high-efficiency negative pressure mechanism to ensure that these devices can be safely used for subsequent patient treatment.

[0049] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions only describe the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for aspirating tympanic fluid in the middle ear, comprising a puncture needle (1), characterized in that: The bottom end of the puncture needle (1) is fixedly connected to a hose (2), the right end of the hose (2) is fixedly connected to the suction port of a suction tube (3), and a piston rod (4) is movably mounted on the inner side of the suction tube (3); An auxiliary fixing mechanism is provided on the outer sides of the puncture needle (1) and the suction tube (3), and the auxiliary fixing mechanism includes a movable seat (5). A sliding frame (7) is provided on the left side of the movable seat (5) for sliding. Two connecting plates (8) are fixedly installed on the left end of the sliding frame (7); The auxiliary fixing mechanism further comprises a mounting frame (13), and a fixing cylinder (14) is fixedly mounted on the upper surface of the mounting frame (13) at the front and rear ends. A connecting shaft (17) is fixedly installed in the middle of the inner side of the mounting frame (13), and two groups of connecting pieces are slidably sleeved on the outer surface of the connecting shaft (17) near the upper and lower ends, and the outer ends of the two groups of connecting pieces are respectively fixedly connected to clamping plates (18); A deceleration limit mechanism is provided at the upper left end of the movable seat (5), the deceleration limit mechanism comprising a pressure plate (39) that can be elastically moved upward, an inclined pressure surface (9) is provided on the right side of the pressure plate (39), and an inclined resistance surface (10) that cooperates with the inclined pressure surface (9) is provided on the upper surface of the sliding frame (7) at the right end; The deceleration and limiting mechanism further comprises two sliding rods (26), and an I-shaped sliding groove (27) is provided at the inner left end of the movable seat (5); A rotating seat (11) is rotatably provided on the inner side of the connecting plate (8) near the upper end, and a high-efficiency negative pressure mechanism is provided at the bottom end of the rotating seat (11) and located on the outer side of the hose (2). The high-efficiency negative pressure mechanism includes an arc-cone-shaped extrusion seat (12), and the arc-cone-shaped extrusion seat (12) can effectively control the flow state of air and liquid inside the hose (2).

2. The device for aspirating tympanic fluid in the middle ear according to claim 1, characterized in that: A fixing rod (15) is slidably inserted into the inner side of the fixing cylinder (14), a fixing block (16) is fixedly installed on the right side of the bottom end of the fixing rod (15), and a plurality of fixing holes for clamping and fitting with the fixing block (16) are opened on the right side of the fixing cylinder (14).

3. The device for aspirating tympanic fluid in the middle ear according to claim 2, characterized in that: The left ends of the two clamping plates (18) are respectively fixedly mounted with arc-shaped clamping pieces (19), and the middle of the outer surface of the connecting shaft (17) is sleeved with a torsion spring (20).

4. The device for aspirating tympanic fluid in the middle ear according to claim 3, characterized in that: The upper and lower ends of the torsion spring (20) are respectively connected to the inner sides of the two clamping plates (18); a support frame (21) is fixedly installed at the right end of the upper surface of the movable seat (5); a fixed shaft (22) is rotatably installed at the inner rear end of the support frame (21); a fixed frame (23) is fixedly connected to the upper side of the fixed shaft (22); two clamping blocks are fixedly installed at the bottom end of the front side of the fixed frame (23); and a clamping hole for clamping with the clamping block is opened at the corresponding position of the support frame (21).

5. The device for aspirating tympanic fluid in the middle ear according to claim 1, characterized in that: The two connecting plates (8) are rotatably mounted with a mounting shaft (24) at the inner upper end thereof, a rotating seat (11) is fixedly mounted on the middle of the outer surface of the mounting shaft (24), and resistance rubber rings are respectively mounted at the connection points between the mounting shaft (24) and the outer surfaces of both ends of the two connecting plates (8). An assembly seat (25) is snap-fitted on the front side of the rotating seat (11), and a buckling groove is provided on the upper side of the assembly seat (25). A pushing ring (6) is fixedly mounted on the left side of the upper end of the connecting plate (8), and the bottom end bending part of the puncture needle (1) is fixedly mounted in the fixed grooves respectively provided on the inner sides of the rotating seat (11) and the assembly seat (25).

6. The device for aspirating tympanic fluid in the middle ear according to claim 1, characterized in that: The outer side of the sliding frame (7) is slidably matched with the inner side of the I-shaped slide groove (27), and the two sliding rods (26) are slidably inserted at the upper left end of the moving seat (5). The upper end of the sliding rod (26) is fixedly installed with a limiting column (38), and the outer surface of the front sliding rod (26) is provided with a spring (28). The lower surface of the limiting column (38) is fixedly connected to the upper and lower ends of the spring (28) at the upper left end of the moving seat (5). The bottom ends of the two sliding rods (26) are fixedly connected to the upper surface of the pressure plate (39), and the two sides of the pressure plate (39) are slidably matched with the middle of the inner side of the I-shaped slide groove (27).

7. The device for aspirating tympanic fluid in the middle ear according to claim 1, characterized in that: The high-efficiency negative pressure mechanism also includes an assembly frame (29), which is fixedly mounted on the bottom side of the rotating seat (11), and a mounting plate (30) is fixedly mounted at the middle of the inner side of the assembly frame (29). The front and rear sides of the assembly frame (29) are respectively provided with movable grooves (31), and a fixing plate (34) is fixedly mounted on the inner side of the movable groove (31) and near the upper right end. A threaded rod (32) is rotatably mounted on the inner side of the movable groove (31) and the front fixing plate (34), and a connecting rod (33) is fixedly mounted on the inner side of the movable groove (31) and the rear fixing plate (34). Sliders are fixedly mounted on the front and rear sides of the bottom end of the arc-cone extrusion seat (12).

8. The device for aspirating tympanic fluid in the middle ear according to claim 7, characterized in that: The outer sides of the two sliding members are respectively slidably matched with the inner sides of the two moving grooves (31), the inner side of the front sliding member is threadedly matched with the outer surface of the threaded rod (32), and the inner side of the rear sliding member is slidably matched with the outer surface of the connecting rod (33). The upper right end of the threaded rod (32) is fixedly connected to the motor (37), and the bottom side of the motor (37) is fixedly mounted on the fixed plate (34) through a connecting member. A battery (35) is fixedly embedded on the assembly frame (29) near the upper side of the motor (37). A forward button (36) and a reverse button (40) are sequentially installed on the upper end of the rotating seat (11) near the right side. The forward button (36) is set to be a raised type, and the reverse button (40) is set to be embedded. A control unit is installed inside the rotating seat (11).

9. The device for aspirating tympanic fluid in the middle ear according to claim 8, characterized in that: A micro-imager (45) is provided at the head end of the rotating seat (11), and one end of the micro-imager is connected to a battery (35).

10. The device for aspirating tympanic fluid in the middle ear according to claim 1, characterized in that: The rotating seat (11) and the connecting plate (8) are connected to each other through a shaft connection structure, one end of which is provided with a micro-motor (44) connected to the rotating shaft (43); The micro forward and reverse motor (44) is arranged on the connecting plate (8); an internal gear (42) is provided on both sides of the rotating seat (11), which is located at the junction of the rotating seat (11) and the connecting plate (8), and forms a gear match with the external gear (41) on the rotating shaft to drive the rotating seat (11) to move.

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