Middle-ear tympanic chamber effusion suction device

Abstract

The invention relates to the technical field of medical instruments, in particular to a middle-ear tympanic chamber effusion suction device which comprises a puncture needle, a hose is fixedly connected to the bottom end of the puncture needle, a suction opening of a suction pipe is fixedly connected to the right end of the hose, and an auxiliary fixing mechanism is jointly arranged on the outer side of the puncture needle and the outer side of the suction pipe. The auxiliary fixing mechanism comprises a moving seat, a speed reduction limiting mechanism is arranged at the upper left end of the moving seat, a rotating seat is rotationally arranged at the position, close to the upper end, of the inner side of the connecting plate, and an efficient negative pressure mechanism is arranged at the position, located on the outer side of the hose, of the bottom end of the rotating seat; the puncture needle, the hose and the suction pipe are installed on the auxiliary fixing mechanism, accurate position adjustment of the puncture needle is achieved according to the tympanic membrane positions of different patients, controllability of the puncture speed and depth is guaranteed through the speed reduction limiting mechanism, and the efficient negative pressure mechanism is controlled through a forward rotation button and a reverse rotation button. And the air and liquid circulation state in the hose can be effectively controlled.

Description

Technical Field

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

[0002] Tympanic effusion is often caused by ear diseases such as otitis media and otitis externa. When there is too much effusion, it can cause a series of uncomfortable symptoms such as hearing loss, tinnitus, and ear pain. In order to relieve these symptoms and reduce the pressure in the middle ear cavity, doctors usually recommend fluid extraction, which effectively improves the patient's ear health.

[0003] Among the existing public patents, the announcement number is CN209645223U and the patent name is A negative pressure suction device for tympanic membrane puncture. The negative pressure suction device for tympanic membrane puncture 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 make the clamping part 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. The process of extracting tympanic fluid requires high stability, but the device lacks an auxiliary fixing mechanism that can be applied to the ear side of different patients, which inevitably causes shaking during subsequent use, thus affecting the safety of the extraction process; 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 the like. Summary of the invention

[0004] 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.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a device for aspirating fluid from the middle ear tympanic cavity, 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, and a piston rod is movably installed on the inner side of the suction tube; The outer sides of the puncture needle and the suction tube are jointly provided with an auxiliary fixing mechanism, the auxiliary fixing mechanism comprises a movable seat, a sliding frame is slidably provided on the left side of the movable seat, and two connecting plates are fixedly installed on the left end of the sliding frame, and the auxiliary fixing mechanism can fix the puncture needle and the suction tube to the external auxiliary device on the patient's ear side; 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 that cooperates with the inclined pressure surface is provided at the upper surface of the sliding frame at the right end; A rotating seat is rotatably arranged on the inner side of the connecting plate near the upper end, and a high-efficiency negative pressure mechanism is arranged at the bottom end of the rotating seat and on the outer side of the hose. The high-efficiency negative pressure mechanism includes an arc-conical extrusion seat, which can effectively control the flow state of air and liquid inside the hose.

[0006] 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 at 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.

[0007] 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 with 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.

[0008] Preferably, the upper and lower ends of the torsion spring are extended and connected to the inner sides of the two clamping plates respectively, 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, a fixed frame is fixedly connected to the upper side of the fixed shaft, two clamping blocks are fixedly installed at the front bottom end of the fixed frame, and corresponding parts of the support frame are provided with clamping holes that cooperate with the clamping blocks.

[0009] Preferably, a mounting shaft is rotatably installed at the inner upper 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 between the mounting shaft and the outer surfaces of both ends of the two connecting plates, an assembly seat is snap-fitted with the front side of the rotating seat, a buckling groove is provided on the upper side of the assembly seat, a pushing 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 fixing grooves respectively provided on the inner sides of the rotating seat and the assembly seat.

[0010] Preferably, the deceleration and limiting mechanism also includes two sliding rods, an I-shaped slide groove is opened 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 covered 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.

[0011] Preferably, the high-efficiency negative pressure mechanism also includes an assembly frame, which is fixedly installed on the bottom side of the rotating seat, a mounting plate is fixedly installed at the middle of the inner side of the assembly frame, and movable grooves are respectively opened on the front and rear sides of the assembly frame, a fixing plate is fixedly installed on the inner side of the movable groove and near the upper right end, a threaded rod is rotatably installed on the inner side of the movable groove on the front side and the front fixed plate, and a connecting rod is fixedly installed on the inner side of the movable groove on the rear side and the rear fixed plate, and sliding parts are fixedly installed on the front and rear sides of the bottom end of the arc-conical extrusion seat.

[0012] 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 and near the upper side of the motor, and a forward button and a reverse button are successively installed on the upper end of the rotating seat and near the right side. The forward button is configured to be a raised type, and the reverse button is configured to be embedded, and a control unit is installed inside the rotating seat.

[0013] 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.

[0014] 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, and it forms a gear match with the external gear on the rotating shaft to drive the rotating seat to move.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention achieves accurate position adjustment of the puncture needle according to the position of the tympanic membrane of different patients by installing the puncture needle, the hose and the 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.

[0016] 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

[0017] Figure 1 It is a schematic diagram of the overall structure of a device for aspirating fluid from the middle ear tympanic cavity of the present invention; Figure 2 It is a structural schematic diagram of the main mechanism of a device for aspirating fluid from the middle ear tympanic cavity of the present invention; Figure 3 It is a schematic structural diagram of the interior of a fixed cylinder in a device for suctioning tympanic fluid in the middle ear of the present invention; Figure 4 It is a structural schematic diagram of a movable seat in a device for suctioning tympanic fluid in the middle ear of the present invention; Figure 5 It is a structural schematic diagram of a deceleration and limiting mechanism, a sliding frame and a moving seat in a middle ear tympanic cavity effusion suction device of the present invention; Figure 6 It is a schematic structural diagram of a rotating seat in a device for suctioning tympanic fluid in the middle ear of the present invention; Figure 7 It is a structural schematic diagram of a rotating seat and a high-efficiency negative pressure mechanism in a device for suctioning tympanic fluid in the middle ear of the present invention; Figure 8 It is a schematic structural diagram of a high-efficiency negative pressure mechanism in a device for aspirating fluid from the middle ear tympanic cavity of the present invention; Fig. 9 It is a structural schematic diagram of a rotating seat in a device for suctioning fluid from the middle ear tympanic cavity of the present invention; Fig.10 for Fig. 9 CC view of the invention (not drawn to scale); Fig.11 for Figure 2 A partial enlarged schematic diagram of part A.

[0018] In the figure: 1, puncture needle; 2, hose; 3, suction tube; 4, piston rod; 5, moving 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, fixed cylinder; 15, fixed rod; 16, fixed block; 17, connecting shaft; 18, clamping plate; 19, arc-shaped clamping member; 20, torsion spring; 21, support frame; 22, fixed shaft; 23, fixed frame; 24. Mounting shaft; 25. Assembly seat; 26. Sliding rod; 27. I-shaped slide groove; 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

[0019] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0020] like Figure 1-Figure 11 The device for aspirating fluid from the middle ear tympanic cavity shown in the figure 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 a 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 between the hose 2 and the inside of the suction tube 3.

[0021] 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 slidably 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 seat 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. The fixing holes are installed 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 mounted 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 mounted 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 outwards. 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.

[0022] 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. A fixed frame 23 is fixedly connected to the upper side of the fixed shaft 22, 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. When the movable seat 5 is pulled upward, the fixing rod 15 continuously slides upward to a suitable height on the inner side of the fixing tube 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 tube 14. The doctor pulls the fixing frame 23 upward, so that the clamping block at the bottom end of the fixing frame 23 is moved out of the clamping hole at the upper end of the support frame 21.

[0023] A mounting shaft 24 is rotatably installed at the inner upper end of the two connecting plates 8, and a rotating seat 11 is fixedly mounted in the middle of the outer surface of the mounting shaft 24. Resistance rubber rings are respectively mounted at the connection 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 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 takes the puncture needle 1 out of 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 fixing 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 desired angle.

[0024] A deceleration and limiting mechanism is provided at the upper left end of the moving seat 5, and the deceleration and limiting mechanism 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 39. 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 and limiting mechanism also includes two sliding rods 26. An I-shaped slide groove 27 is provided at the inner left end of the moving 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 moving seat 5, and a limiting column 38 is fixedly installed on the upper end of the sliding rod 26. The outer surface of the front sliding rod 26 is covered with a spring 28, and 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 slide with the inner middle of the I-shaped slide groove 27. After the thumb and middle finger of the doctor's other hand pass through the inner sides of the pushing rings 6 installed at the upper ends of the two connecting plates 8 respectively, they are pressed on the rotating seat 11 and the assembly seat 25, and 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 tympanic membrane. 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 tympanic membrane, and playing a certain deceleration and buffering effect. When the puncture needle 1 successfully pierces the patient's tympanic membrane, the doctor stops moving the sliding frame 7. At this time, since the elastic pressure plate 39 arranged on the upper side of the sliding frame 7 is subjected to the elastic force of the spring 28, the sliding frame 7 can be effectively limited and fixed in the I-shaped slide groove 27 of the moving seat 5.

[0025] 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 outer side of the hose 2. The high-efficiency negative pressure mechanism includes an arc-conical 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 installed on the bottom side of the rotating seat 11, and a mounting plate 30 is fixedly installed at the middle of the inner side of the assembly frame 29. Moving grooves 31 are respectively provided on the front and rear sides of the assembly frame 29, and a fixing plate 34 is fixedly installed on the inner side of the moving groove 31 and near the upper right end, and a threaded rod 32 is rotatably installed on the inner side of the front moving groove 31 and the front fixing plate 34, and a connecting rod 3 is fixedly installed on the inner side of the rear moving groove 31 and the rear fixing 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 sliders are respectively slidably matched with the inner sides of the two moving grooves 31, 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 with a motor 37, and the bottom side of the motor 37 is fixedly installed on the fixed plate 34 through a connecting piece. A battery 35 is fixedly embedded on the assembly frame 29 and close to the upper side of the motor 37. A forward button 36 and a reverse button 40 are successively installed on the upper end of the rotating seat 11 and close to the right side. The forward button 36 is set to a raised type, and the reverse button 40 is set to an embedded type. 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 to the upper right along the inner side of the assembly frame 29 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 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, 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.

[0026] In addition, in order to further improve the visibility of the present invention in the ear canal, a miniature imager is provided at the head end of the rotating base, and one end of the miniature imager is connected to a battery. The miniature imager can provide imaging functions for doctors, and has both wireless transmission and wired transmission functions. It is a commonly used device in this field. Doctors can use wireless receiving devices to clearly understand the situation in the patient's ear canal, so as to facilitate the accuracy of puncture.

[0027] In addition, see Figure 9-10The present invention also has a second embodiment for the rotation mode between the rotating seat and the connecting plate, which 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, which drives the rotating shaft to move, and cooperates with the external gear set 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 structure (that is, 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 line and wirelessly. The doctor only needs to hold the control device to realize the refined 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 it will not be described in detail in the present 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, which form a gear match with the external gear on the rotating shaft to drive the rotating seat to move.

[0028] During use, the patient is asked to sit upright on the medical chair, and then the doctor uses his fingers to respectively hold the two clamping plates 18, and the two arc-shaped clamping members 19 are rotated outward by the action of the two clamping plates 18. 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 extracted to fix them; After that, 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 tympanic membrane. Then, according to the position of the tympanic membrane in the patient's ear canal, the doctor pulls the movable seat 5 upward with the other hand, so that the fixed rod 15 slides upward inside the fixed cylinder 14 to a suitable height. The fixed block 16 installed at the bottom end of the fixed rod 15 is engaged with the fixed hole opened at the corresponding position of the fixed cylinder 14. Then 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 installation shaft 24, the puncture needle 1 can be stably fixed and maintained at the desired angle. At this time, the thumb and middle finger of the doctor's other hand respectively pass through the inner side of the pushing ring 6 installed at the upper end of the two connecting plates 8, and then press on the rotating seat 11 and the assembly seat 25, and 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 tympanic membrane. 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 upper elastically movable pressure plate 39. 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 tympanic membrane, and playing a certain deceleration and buffering effect. When the puncture needle 1 successfully pierces the patient's tympanic membrane, the doctor stops moving the sliding frame 7. At this time, since the elastic pressure plate 39 arranged on the upper side of the sliding frame 7 is subjected to the elastic force of the spring 28, the sliding frame 7 can be effectively limited and fixed in the I-shaped slide groove 27 of the moving seat 5. Next, the doctor presses the forward button 36 downward with the index finger of the other hand to start the motor 37, so that it drives the threaded rod 32 to rotate forward. The threaded rod 32 moves the arc-conical extrusion seat 12 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 smoothly drawn away through the hose 2 and the suction tube 3 under the action of negative pressure. After the effusion is drawn, the doctor pulls the puncture needle 1 backward to remove it from the patient's ear canal. Afterwards, the doctor removes the assembly seat 25 from one side of the rotating seat 11 by depressing the groove, and then takes out 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 moved out of the clamping hole at the upper end of the supporting 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 operations 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 treatments.

[0029] 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 implementation cases. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached 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 a suction port of a suction tube (3), and a piston rod (4) is movably mounted inside the suction tube (3); The puncture needle (1) and the suction tube (3) are provided with an auxiliary fixing mechanism on their outer sides. The auxiliary fixing mechanism comprises a movable seat (5). A sliding frame (7) is slidably provided on the left side of the movable seat (5). Two connecting plates (8) are fixedly mounted on the left end of the sliding frame (7). 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; A rotating seat (11) is rotatably arranged on the inner side of the connecting plate (8) near the upper end, and a high-efficiency negative pressure mechanism is arranged 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). 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: The auxiliary fixing mechanism further comprises a mounting frame (13), a fixing cylinder (14) being fixedly mounted on the upper surface of the mounting frame (13) and at the front and rear ends, a fixing rod (15) being slidably inserted into the inner side of the fixing cylinder (14), a fixing block (16) being fixedly mounted on the right side of the bottom end of the fixing rod (15), and a plurality of fixing holes for engaging with the fixing block (16) being provided 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: A connecting shaft (17) is fixedly mounted in the middle of the inner side of the mounting frame (13); two groups of connecting parts are slidably mounted 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 to clamping plates (18); the left ends of the two clamping plates (18) are respectively fixedly mounted with arc-shaped clamping parts (19); and a torsion spring (20) is mounted in the middle of the outer surface of the connecting shaft (17).

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 mounted at the right end of the upper surface of the movable seat (5); a fixed shaft (22) is rotatably mounted 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 mounted at the front bottom end of the fixed frame (23); and a clamping hole for clamping with the clamping block is opened at a 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: A mounting shaft (24) is rotatably mounted at the inner upper ends of the two connecting plates (8), a rotating seat (11) is fixedly mounted at 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 at the front side of the rotating seat (11), and a buckling groove is provided on the upper side of the assembly seat (25). A push ring (6) is fixedly mounted at the left side of the upper end of the connecting plate (8), and the bottom end 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 5, characterized in that: The deceleration and limiting mechanism further comprises two sliding rods (26), an I-shaped slide groove (27) is provided at the inner left end of the moving seat (5), the outer side of the sliding frame (7) is slidably matched 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 moving seat (5), a limiting column (38) is fixedly installed at the upper end of the sliding rod (26), a spring (28) is sleeved on the outer surface of the front sliding rod (26), 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 a pressing plate (39), and the two sides of the pressing plate (39) are slidably matched with the inner middle 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 further comprises an assembly frame (29), wherein the assembly frame (29) is fixedly mounted on the bottom side of the rotating seat (11), 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 formed on the front and rear sides of the assembly frame (29), a fixing plate (34) is fixedly mounted on the inner side of the movable groove (31) and close to 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) on the front side, a connecting rod (33) is fixedly mounted on the inner side of the movable groove (31) and the rear fixing plate (34) on the rear side, and sliding members are fixedly mounted on the front and rear sides of the bottom end of the arc-cone extrusion seat (12), respectively.

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 a motor (37), and the bottom side of the motor (37) is fixedly mounted on a fixed plate (34) through a connecting member. A storage battery (35) is fixedly embedded on the assembly frame (29) and close to the upper side of the motor (37). A forward button (36) and a reverse button (40) are sequentially mounted on the upper end of the rotating seat (11) and close to the right side. The forward button (36) is configured as a raised type, and the reverse button (40) is configured as an embedded type. 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 storage 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 by a shaft connection structure, one end of which is provided with a micro forward and reverse motor (44) connected to the rotating shaft (43); the micro forward and reverse motor (44) is arranged on the connecting plate (8); both sides of the rotating seat (11) are provided with an internal gear (42), which is located at the junction of the rotating seat (11) and the connecting plate (8), and the internal gear (42) 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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