Pleural effusion suction device

Abstract

The invention discloses a pleural effusion suction device, relates to the technical field of pleural effusion suction devices, aims to solve the technical problem that the pleural effusion suction device is easy to block, and comprises a machine body, a closed channel, a rotating stand, a roller unit, a flow guide tube assembly and a rotating mechanism. The three roller units are driven by the rotating frame to circularly move along the closed channel, and the functions of compaction pushing, radial vibration anti-blocking and separation resetting are achieved on the stations corresponding to the first arc groove, the inclined guide groove A, the second arc groove, the third arc groove and the inclined guide groove B. The stations work cooperatively, and the working efficiency is improved. The second arc groove drives the rolling wheel unit to do radial reciprocating motion to generate deformation disturbance on the flow guide pipe assembly, the deposition risk of hydrops on the inner wall of the flow guide pipe assembly is effectively reduced, and therefore long-acting and stable pleural effusion drainage is achieved on the premise that the operation burden of medical staff is not increased, and the technical problem that the pleural effusion suction device is prone to being blocked is solved.

Description

Technical Field

[0001] This invention relates to the field of pleural effusion aspiration devices, and more specifically, to a pleural effusion aspiration device. Background Technology

[0002] Pleural effusion drainage is a common treatment in thoracic surgery and respiratory medicine, used to drain pus, blood, or exudate accumulated in the pleural cavity, relieve compression symptoms, and promote lung re-expansion. Currently, the drainage devices widely used in clinical practice are mostly based on the principle of negative pressure gravity, using a water-seal bottle or collection bag in conjunction with a drainage tube to achieve passive drainage.

[0003] However, in the use of existing drainage devices, fibrin, purulent discharge, or blood clots in the effusion easily accumulate on the inner wall of the drainage tube, leading to gradual narrowing or even complete blockage of the lumen. Once blocked, the tube requires frequent manual squeezing or flushing by medical staff, which not only increases workload but may also cause complications such as drainage interruption and pleural infection if not treated promptly. Therefore, we propose a pleural effusion aspiration device. Summary of the Invention

[0004] The purpose of this invention is to provide a pleural effusion aspiration device to solve the technical problem of easy clogging in pleural effusion aspiration devices.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a pleural effusion aspiration device, comprising a body, an inlet cavity formed on one side of the body, closed channels formed at both ends of the inlet cavity, a rotating frame rotatably mounted within the inlet cavity, three roller units slidably connected in a ring-shaped, equally spaced structure on the rotating frame, each roller unit being movably connected to two of the closed channels at its two ends, a guide tube assembly provided within the inlet cavity, the roller units movably cooperating with the guide tube assembly, and a rotating mechanism within the body for driving the rotating frame to rotate; the closed channels include a first arc groove arranged sequentially along the circumferential direction, ... The system comprises an inclined guide groove A, a second arc groove, a third arc groove, and an inclined guide groove B. The radius of the first arc groove is greater than that of the third arc groove. When the roller unit moves within the first arc groove, it compacts and rolls the drainage tube assembly, transporting the fluid accumulated in the patient's body towards the collection direction. The second arc groove is composed of several V-shaped grooves arranged in an arc shape, with their ends connected sequentially. When the roller unit moves within the second arc groove, it reciprocates radially, causing deformation at the contact point between the drainage tube assembly and the roller unit. This deformation is transmitted to the fluid inside the tube through the tube wall, disturbing the fluid and thus reducing fluid deposition on the tube wall. This invention utilizes three roller units that circulate along a closed channel driven by a rotating frame. These units, located at the corresponding workstations in the first arc groove, inclined guide groove A, the second arc groove, the third arc groove, and the inclined guide groove B, respectively, perform compaction and pushing, radial vibration anti-blocking, and disengagement / reset functions. The workstations work collaboratively, with the second arc groove driving the roller units to reciprocate radially, causing deformation disturbance to the drainage tube assembly. This effectively reduces the risk of fluid deposition on the inner wall of the drainage tube assembly, thus achieving long-term, stable drainage of pleural effusion without increasing the operational burden on medical staff. This solves the technical problem of easy clogging in pleural effusion aspiration devices.

[0006] Preferably, the inclined guide groove A and the inclined guide groove B have the same structure, and the sum of the central angles corresponding to the first arc groove and the inclined guide groove A is 120°.

[0007] Preferably, the surface of the body has a replacement cavity communicating with the front cavity, and half holes A are formed on both sides of the bottom end of the replacement cavity. Connecting grooves are formed on both sides of the bottom of the replacement cavity, and threaded grooves are formed in the connecting grooves. A rear cavity is formed on the other side of the body, and a battery pack is fixed in the rear cavity. A connector groove communicating with the rear cavity is formed on the surface of the body, and a charging connector is fixed in the connector groove. The output end of the charging connector is connected to the input end of the battery pack. An installation cavity is formed in the gap between the front cavity and the rear cavity, and an installation groove is formed on the side of the installation cavity away from the front cavity.

[0008] Preferably, the rotating frame includes a sector-shaped block, and a ring block is fixedly provided at one end of the sector-shaped block near the mounting cavity. The ring block is rotatably connected to the mounting cavity via a one-way bearing, so that the ring block can only rotate in a clockwise direction. A sector-shaped groove is formed on the surface of the sector-shaped block, and a support arm A is provided in the sector-shaped groove. A central shaft is fixed on the support arm A. The end of the central shaft near the mounting cavity passes through the ring block and is fixedly connected to the output end of the rotating mechanism. Two support arms B are fixedly provided on the sector-shaped block in a symmetrical structure. Sliding holes are formed at the eccentric ends of the support arm A and the two support arms B. Sliding rods are slidably provided on the sliding holes. In the initial state, the support arm A is in contact with the clockwise end of the sector-shaped groove, and the distance between any two adjacent sliding rods is equal.

[0009] Preferably, the roller unit includes a rotating base, three rotating bases are respectively fixed to the eccentric ends of the three slide rods, a rotating shaft is rotatably connected to the rotating base, a pressure roller is fixed on the rotating shaft, and movable columns are rotatably provided at both ends of the rotating shaft, and the movable columns are movably connected to the closed channel.

[0010] Preferably, the guide tube assembly includes two symmetrically arranged clamping arms, which are rotatably positioned within the displacement chamber via a rotating rod. The inner surface of each clamping arm has an arcuate structure and a groove. An elastic pad is fixed to the groove, and an elastic tube is fixed to the elastic pad. The elastic tube is movably engaged with the pressure roller. A semi-hole B is formed at the end of each clamping arm away from the rotating rod. The semi-hole B communicates with the semi-hole A to form an outlet hole. A chamfer is formed at the top of the outlet hole. The gap between the two outlet holes and the two elastic tubes forms a limiting channel, and a guide tube is movably connected to the limiting channel.

[0011] Preferably, a connecting block is fixedly provided at the bottom of the clamping arm, the connecting block is movably engaged with the connecting groove, a threaded rod is threadedly connected to the connecting block, the threaded rod is threadedly connected to the threaded groove, and a knob is fixedly provided at the end of the threaded rod away from the threaded groove.

[0012] Preferably, two sliding grooves are symmetrically formed on the inner surface of the clamping arm near the second arc groove, and the two sliding grooves are connected by a movable groove.

[0013] Preferably, an arc plate is fixedly provided at the centripetal end of the elastic tube near the second arc groove. The arc plate is movably engaged with the pressure roller. Slide plates are fixedly provided at both ends of the arc plate. The two slide plates are slidably connected to the two slide grooves respectively. The two slide plates are fixedly connected by a movable block. The movable block is slidably disposed in the movable groove. The movable block and the movable groove are elastically connected by a spring.

[0014] Preferably, the rotating mechanism includes a large gear and a micro motor. The large gear is rotatably disposed in the mounting cavity and fixedly connected to the central shaft. The large gear has several weight-reducing grooves. A small gear is meshed on the large gear and is rotatably connected to the mounting cavity. The micro motor is fixedly disposed in the mounting groove and is electrically connected to the battery pack. The gear shaft of the small gear passes through the mounting groove and is fixedly connected to the output shaft of the micro motor.

[0015] The beneficial effects of this invention are: 1. This invention uses three roller units that circulate along a closed channel driven by a rotating frame. These roller units, located at the corresponding workstations of the first arc groove, inclined guide groove A, the second arc groove, the third arc groove, and the inclined guide groove B, respectively, perform compaction and pushing, radial vibration anti-blocking, and disengagement and reset functions. The workstations work together, and the second arc groove drives the roller units to move radially back and forth, causing deformation disturbance to the drainage tube assembly. This effectively reduces the risk of fluid deposition on the inner wall of the drainage tube assembly, thereby achieving long-term and stable drainage of pleural effusion without increasing the operational burden on medical staff. This solves the technical problem of easy clogging in pleural effusion aspiration devices.

[0016] 2. The present invention further designs the inclined guide grooves A and B so that when one of the roller units enters the inclined guide groove A from the first arc groove, the roller unit is offset in the centripetal direction, so that the drainage tube assembly is in a connected state. At the same time, the other roller unit enters the inclined guide groove B. This structure prevents the drainage tube assembly from being squeezed in a compacted state when the roller unit in the first arc groove is replaced, causing the fluid near the patient to flow back into the patient's body.

[0017] 3. This invention further designs the rotating frame structure, enabling the device to have two special working modes: When the patient is resting at night or during periods without drainage needs, the rotating mechanism can be controlled to drive the central shaft to perform symmetrical reciprocating rotation, causing the roller unit connected to the support arm A to reciprocate along the second arc groove and continuously vibrate radially, applying continuous disturbance to the residual fluid in the tube. At the same time, the other two roller units are respectively positioned at the corresponding positions of the first and third arc grooves, achieving continuous anti-blocking in the non-suction state and preventing deposition. When the patient's fluid viscosity is high, making the conventional vibration anti-blocking effect insufficient, the rotating mechanism can be controlled to perform combined rotation, first completing a 360° push to drain the accumulated fluid, and then performing a preset number of symmetrical reciprocating vibrations. The external control mechanism has multiple settings, which can adjust the number of vibrations according to the viscosity, achieving a combination of intermittent suction and continuous disturbance. This design, through flexible switching between the two modes, not only solves the problem of easy deposition of residual fluid in the tube at night or during periods without drainage, but also achieves strong anti-blocking for high-viscosity fluid, further reducing the risk of drainage tube blockage.

[0018] 4. The present invention makes the flow guiding tube assembly replaceable.

[0019] 5. This invention, by setting an elastic tube near the second arc groove and cooperating with the pressure roller through an arc plate, ensures that when the pressure roller reciprocates radially within the second arc groove, it no longer applies linear compression. Instead, the pressure is dispersed across a larger area of ​​the elastic tube wall via the arc plate, increasing the compression area of ​​the vibration section and expanding the disturbance range of the liquid inside the tube. Simultaneously, the energy storage and release of the spring causes the arc plate to drive the elastic tube to produce regular tension and relaxation deformation, assisting the guide hose in deformation reset and forming a breathing vibration, thereby improving the disturbance efficiency of the liquid inside the tube. This further prevents the guide hose from depositing and clogging. In the suction of high-viscosity liquids, it reduces the number of symmetrical reciprocating rotations in the combined rotation, saving interval time and thus improving the suction efficiency of high-viscosity liquids. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a first cross-sectional view of the overall structure of the present invention.

[0022] Figure 3 This is a second cross-sectional view of the overall structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the disassembled structure of the body of the present invention.

[0024] Figure 5 This is a cross-sectional structural diagram of the body of the present invention.

[0025] Figure 6 This is a schematic diagram showing the disassembled structure of the flow guide tube assembly of the present invention.

[0026] Figure 7 This is a partial structural disassembly diagram of the guide tube assembly of the present invention.

[0027] Figure 8 This is a schematic diagram of the structure of the elastic pad and elastic tube of the present invention.

[0028] Figure 9 This is a schematic diagram of the structure of the rotating frame, roller unit and rotating mechanism of the present invention.

[0029] Figure 10 This is a schematic diagram showing the disassembled structure of the rotating frame and roller unit of the present invention.

[0030] Figure 11 This is a structural schematic diagram of the roller unit's motion state according to the present invention.

[0031] Explanation of the labels in the diagram: 1. Body; 2. Closed channel; 3. Rotating frame; 4. Roller unit; 5. Guide tube assembly; 6. Rotating mechanism; 10. Half-hole A; 11. Front cavity; 12. Replacement cavity; 13. Connecting groove; 14. Threaded groove; 15. Rear cavity; 16. Battery pack; 17. Connector groove; 18. Charging connector; 19. Mounting cavity; 110. Mounting groove; 21. First arc groove; 22. Inclined guide groove A; 23. Second arc groove; 24. Third arc groove; 25. Inclined guide groove B; 31. Sector block; 32. Ring block; 33. One-way bearing; 34. Support arm A; 35. Sector groove; 36. Central shaft; 37. Support arm B; 38. Sliding hole; 39. Sliding rod; 41. Rotary seat; 42. Rotary shaft; 43. Pressure roller; 44. Movable column; 51. Clamping arm; 52. Groove; 53. Elastic pad; 54. Elastic tube; 55. Flow guide hose; 56. Connecting block; 57. Threaded rod; 58. Knob; 59. Half hole B; 511. Slide groove; 512. Movable groove; 541. Curved plate; 542. Slide board; 543. Movable block; 544. Spring; 61. Large gear; 62. Small gear; 63. Miniature motor. Detailed Implementation

[0032] like Figures 1 to 11 As shown, the present invention relates to a pleural effusion aspiration device, comprising a body 1, an inlet cavity 11 on one side of the body 1, closed channels 2 at both ends of the inlet cavity 11, a rotating frame 3 rotatably mounted inside the inlet cavity 11, three roller units 4 slidably connected in a ring-shaped and equally spaced structure on the rotating frame 3, the two ends of the roller units 4 being movably connected to two closed channels 2 respectively, a guide tube assembly 5 is provided inside the inlet cavity 1, one end of the guide tube assembly 5 extends out of the body 1 and is movably connected to an external puncture needle, the other end of the guide tube assembly 5 extends out of the body 1 and is movably connected to an external collection container, the roller units 4 are movably engaged with the guide tube assembly 5, and a rotating mechanism 6 is provided inside the body 1 for driving the rotating frame 3 to rotate.

[0033] In embodiments of the present invention, such as Figure 5 and Figure 11 As shown, the closed channel 2 includes a first arc groove 21, an inclined guide groove A22, a second arc groove 23, a third arc groove 24 and an inclined guide groove B25 arranged sequentially along the circumferential direction.

[0034] The radius of the first arc groove 21 is greater than the radius of the third arc groove 24. When the roller unit 4 moves in the first arc groove 21, the roller unit 4 compacts and rolls the diversion tube assembly 5, transporting the accumulated fluid in the patient's body towards the collection direction. When the roller unit 4 moves in the third arc groove 24, the roller unit 4 disengages from the diversion tube assembly 5.

[0035] The inclined guide grooves A22 and B25 have the same structure. The sum of the central angles corresponding to the first arc groove 21 and the inclined guide groove A22 is 120°. When one of the roller units 4 enters the inclined guide groove A22 from the first arc groove 21, the roller unit 4 is offset in the centripetal direction, so that the diversion tube assembly 5 is in a connected state. At the same time, the other roller unit 4 enters the inclined guide groove B25. This structure prevents the diversion tube assembly 5 from being squeezed in a compacted state when the roller unit 4 in the first arc groove 21 is replaced, causing the effusion on the side near the patient to flow back into the patient's body.

[0036] The second arc groove 23 is composed of several V-shaped grooves arranged in an arc shape, with their ends connected sequentially. When the roller unit 4 moves within the second arc groove 23, the roller unit 4 moves radially back and forth, causing deformation at the contact point between the guide pipe assembly 5 and the roller unit 4. This deformation is transmitted to the liquid inside the pipe through the pipe wall, disturbing the liquid and thus reducing the deposition of liquid on the pipe wall and preventing blockage. Through the above-mentioned arrangement, the present invention enables the three roller units 4 to circulate along the closed channel 2 under the drive of the rotating frame 3, achieving compaction and pushing, backflow prevention, radial vibration anti-blockage, and disengagement and reset functions at the workstations corresponding to the first arc groove 21, the inclined guide groove A22, the second arc groove 23, the third arc groove 24, and the inclined guide groove B25, respectively. The coordinated operation of each station ensures the continuity of the drainage process. The structural cooperation of the inclined guide grooves A22 and B25 prevents the effusion from flowing back into the patient's body. The second arc groove 23 drives the roller unit 4 to move radially and reciprocally, generating deformation disturbance, which effectively reduces the risk of effusion deposition on the inner wall of the drainage tube assembly 5. Thus, long-term and stable drainage of pleural effusion is achieved without increasing the workload of medical staff.

[0037] In embodiments of the present invention, such as Figure 5 As shown, a replacement cavity 12 communicating with the front cavity 11 is provided on the surface of the body 1. Half holes A10 are provided on both sides of the bottom end of the replacement cavity 12. Connecting grooves 13 are provided on both sides of the bottom of the replacement cavity 12. Threaded grooves 14 are provided in the connecting grooves 13. A rear cavity 15 is provided on the other side of the body 1. A battery pack 16 is fixed in the rear cavity 15. A connector groove 17 communicating with the rear cavity 15 is provided on the surface of the body 1. A charging connector 18 is fixed in the connector groove 17. The output end of the charging connector 18 is connected to the input end of the battery pack 16. An installation cavity 19 is provided in the gap between the front cavity 11 and the rear cavity 15. An installation groove 110 is provided on the side of the installation cavity 19 away from the front cavity 11.

[0038] In embodiments of the present invention, such as Figure 9 and Figure 10As shown, the rotating frame 3 includes a sector block 31. A ring block 32 is fixedly provided at one end of the sector block 31 near the mounting cavity 19. The ring block 32 is rotatably connected to the mounting cavity 19 through a one-way bearing 33, so that the ring block 32 can only rotate in the clockwise direction. A sector groove 35 is provided on the surface of the sector block 31. A support arm A34 is provided in the sector groove 35. A central shaft 36 is fixed on the support arm A34. The end of the central shaft 36 near the mounting cavity 19 passes through the ring block 32 and is fixedly connected to the output end of the rotating mechanism 6. Two support arms B37 are fixedly provided on the sector block 31 in a symmetrical structure. A sliding hole 38 is provided at the eccentric end of the support arm A34 and the two support arms B37. A sliding rod 39 is slidably provided on the sliding hole 38. In the initial state, the support arm A34 is in contact with the clockwise end of the sector groove 35, and the distance between any two adjacent sliding rods 39 is equal. The one-way bearing 33 of this invention is prior art and will not be described in detail here. Through the above-described configuration, when the patient is resting at night or during periods without drainage needs, the output end of the rotating mechanism 6 is controlled by an external control mechanism to rotate, causing the central shaft 36 to perform a symmetrical reciprocating rotational motion, first counterclockwise and then clockwise, with the counterclockwise rotation angle equal to the clockwise rotation angle. This causes the support arm A34 to oscillate reciprocally within the fan-shaped groove 35. The support arm A34, via the slide rod 39, drives the roller unit 4 connected to it to reciprocate circumferentially along the second arc groove 23. Simultaneously, the roller unit 4, guided by the second arc groove 23, generates radial vibration, which helps to remove residual fluid within the drainage tube assembly 5. The fluid accumulation is continuously agitated to prevent it from accumulating and causing blockage. Since the ring block 32 cannot rotate in reverse, the sector block 31 and the two support arms B37 fixed thereon cannot rotate in reverse either. The roller units 4 connected to the two support arms B37 stop at the corresponding positions of the first arc groove 21 and the third arc groove 24, respectively. The roller unit 4 that stops at the first arc groove 21 continuously compresses and seals the drainage tube assembly 5 to prevent the fluid from flowing back into the patient's body. The roller unit 4 that stops at the third arc groove 24 remains detached from the drainage tube assembly 5, and can continuously agitate the fluid in the tube without suctioning to prevent sedimentation. This eliminates the need for medical staff to frequently patrol and manually handle the drainage tube. When the patient's effusion has high viscosity, making conventional vibration-based anti-blockage measures insufficient, an external control mechanism controls the rotating mechanism 6 to drive the central shaft 36 to perform a combined rotation according to a preset program. Specifically, the rotating mechanism 6 first drives the central shaft 36 to rotate 360° clockwise, completing one pushing action to push the effusion accumulated in the drainage tube assembly 5 towards the collection direction. After pushing, the rotating mechanism 6 drives the central shaft 36 to perform at least one symmetrical reciprocating rotation, i.e., the forward rotation angle is equal to the reverse rotation angle, and the maximum swing angle is limited by both ends of the fan-shaped groove 35, ensuring that the roller unit 4 connected to the support arm A34 always reciprocates within the second arc groove 23. The residual effusion in the drainage tube assembly 5 is continuously disturbed, achieving intermittent suction and continuous disturbance to avoid blockage caused by continuous suction. The external control mechanism has multiple settings, each including one 360° push and a preset number of reciprocating swings, with different settings corresponding to different numbers of reciprocating swings.

[0039] In embodiments of the present invention, such as Figure 10 As shown, the roller unit 4 includes a rotating seat 41. Three rotating seats 41 are respectively fixed to the eccentric ends of three slide rods 39. A rotating shaft 42 is rotatably connected to the rotating seat 41. A pressure roller 43 is fixed on the rotating shaft 42. Movable columns 44 are rotatably provided at both ends of the rotating shaft 42. The movable columns 44 are movably connected to the closed channel 2.

[0040] In embodiments of the present invention, such as Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the flow guide tube assembly 5 includes two symmetrically arranged clamping arms 51. The two clamping arms 51 are rotatably disposed in the displacement chamber 12 via a rotating rod. The inner surface of the clamping arms 51 has an arc-shaped structure and a groove 52 is formed on the inner surface of the clamping arms 51. An elastic pad 53 is fixed on the groove 52, and an elastic tube 54 is fixed on the elastic pad 53. The elastic tube 54 is movably engaged with the pressure roller 43. A half-hole B59 is formed at the end of the clamping arm 51 away from the rotating rod. The half-hole B59 and the half-hole A10 are connected to form an outlet hole. A chamfer is formed at the top of the outlet hole. The gap between the two outlet holes and the two elastic tubes 54 forms a limiting channel. A flow guide tube 55 is movably connected to the limiting channel.

[0041] In embodiments of the present invention, such as Figure 6 and Figure 7 As shown, a connecting block 56 is fixedly provided at the bottom of the clamping arm 51. The connecting block 56 is movably engaged with the connecting groove 13. A threaded rod 57 is threadedly connected to the connecting block 56. The threaded rod 57 is threadedly connected to the threaded groove 14. A knob 58 is fixedly provided at the end of the threaded rod 57 away from the threaded groove 14. The present invention, through the above-described configuration, allows the flow guide hose 55 to be replaced. During replacement, rotating the knob 58 rotates the threaded rod 57, causing the threaded rod 57 to unscrew from the threaded groove 14, releasing the lock on the connecting block 56. At this time, the two clamping arms 51 can be rotated outward along the rotating rod to open, allowing the used flow guide hose 55 to be pulled out. After the new flow guide hose 55 is passed through the elastic tube 54, the corresponding clamping arm 51 is closed, and the connecting block 56 slides into the connecting groove 13. During this process, it is ensured that the flow guide hose 55 is located in the corresponding outlet hole. Rotating the knob 58 causes the threaded rod 57 to be screwed back into the threaded groove 14, so that the connecting block 56 fits into the connecting groove 13. Repeating the above steps closes the other clamping arm 51, completing the replacement of the flow guide hose 55.

[0042] In embodiments of the present invention, such as Figure 6 and Figure 7 As shown, two sliding grooves 511 are symmetrically formed on the inner surface of the clamping arm 51 near the second arc groove 23, and the two sliding grooves 511 are connected by a movable groove 512.

[0043] In embodiments of the present invention, such as Figure 8 As shown, an arc plate 541 is fixed at the centripetal end of the elastic tube 54 near the second arc groove 23. The arc plate 541 is movably engaged with the pressure roller 43. Slide plates 542 are fixed at both ends of the arc plate 541. The two slide plates 542 are slidably connected to the two slide grooves 511 respectively. The two slide plates 542 are fixedly connected by a movable block 543. The movable block 543 is slidably disposed in the movable groove 512. The movable block 543 and the movable groove 512 are elastically connected by a spring 544. This invention, by setting an elastic tube 54 near the second arc groove 23 and a pressure roller 43 in movable cooperation via an arc plate 541, allows the pressure roller 43 to no longer perform linear extrusion during radial reciprocating motion within the second arc groove 23. Instead, the extrusion force is dispersed to a larger area of ​​the elastic tube 54 wall via the arc plate 541, increasing the extrusion area of ​​the vibrating section and expanding the disturbance range of the liquid accumulation within the tube. Simultaneously, the energy storage and release of the spring 544 causes the arc plate 541 to drive the elastic tube 54 to produce regular tension and relaxation deformation, assisting the guide hose 55 in deformation and reset, forming a breathing vibration that improves the disturbance efficiency of the liquid accumulation within the tube. This further prevents the guide hose 55 from depositing and clogging. In the suction of high-viscosity liquids, it reduces the number of symmetrical reciprocating rotations in the combined rotation, saving interval time and thus improving the suction efficiency of high-viscosity liquids.

[0044] In embodiments of the present invention, such as Figure 9 As shown, the rotating mechanism 6 includes a large gear 61 and a micro motor 63. The large gear 61 is rotatably mounted in the mounting cavity 19 and fixedly connected to the central shaft 36. Several weight-reducing grooves are formed on the large gear 61. A small gear 62 is meshed with the large gear 61 and is rotatably connected to the mounting cavity 19. The micro motor 63 is fixedly mounted in the mounting groove 110 and electrically connected to the battery pack 16. The gear shaft of the small gear 62 passes through the mounting groove 110 and is fixedly connected to the output shaft of the micro motor 63. Through the structural design of the rotating mechanism 6, this invention allows the micro motor 63 to be controlled by an external control mechanism, causing the small gear 62 to drive the large gear 61 to decelerate and increase torque. The large gear 61 drives the central shaft 36 to rotate, thereby driving the rotating frame 3 to perform a preset reciprocating rotational action. This gear reduction structure reduces the rotational speed and increases the torque while making the overall layout more compact and reducing the size of the device.

[0045] Working principle: This embodiment provides a pleural effusion aspiration device. In use, turn the knob 58 to rotate the threaded rod 57, causing the threaded rod 57 to unscrew from the threaded groove 14, releasing the lock on the connecting block 56. At this time, the two clamping arms 51 can be rotated outward along the rotating rod to open, and the used drainage hose 55 can be pulled out. After the new drainage hose 55 is passed through the elastic tube 54, the corresponding clamping arm 51 is closed, and the connecting block 56 slides into the connecting groove 13. During this process, ensure that the drainage hose 55 is located in the corresponding outlet hole. Turn the knob 58 to make the threaded rod 57 re-screw into the threaded groove 14, so that the connecting block 56 fits into the connecting groove 13. Repeat the above steps to close the other clamping arm 51, completing the replacement of the drainage hose 55. Connect one end of the drainage hose 55 to the puncture needle, and prepare to connect the other end to the external collection container. Based on the patient's effusion viscosity and clinical needs, the corresponding working mode is selected through the external control mechanism, and the micro motor 63 is started; after the micro motor 63 is reduced in speed and increased in torque by the small gear 62 and the large gear 61, it drives the central shaft 36 to rotate, which drives the rotating frame 3 to perform the preset action. Continuous drainage mode: Suitable for routine drainage. The micro motor 63 drives the central shaft 36 to rotate continuously in one direction. The support arm A34 pushes the sector block 31 and the two support arms B37 to rotate synchronously through the sector groove 35. The three roller units 4 circulate along the closed channel 2. When the roller unit 4 passes through the first arc groove 21, it compacts and rolls the drainage tube assembly 5, pushing the accumulated fluid in the patient's body towards the collection container. When it passes through the second arc groove 23, it moves radially back and forth under the guidance of the V-shaped groove, generating radial disturbance to the fluid in the tube and preventing sedimentation. When it passes through the third arc groove 24, it disengages from the drainage tube assembly 5. The three roller units 4 circulate back and forth, realizing continuous drainage and continuous anti-blockage. Intermittent Anti-blockage Mode: Suitable for patients during nighttime rest or when drainage is not required; the micro motor 63 drives the central shaft 36 to perform a symmetrical reciprocating rotational motion, first counterclockwise and then clockwise, with the counterclockwise rotation angle equal to the clockwise rotation angle, causing the support arm A34 to swing back and forth within the fan-shaped groove 35; the support arm A34 drives the roller unit 4 connected to it to move circumferentially along the second arc groove 23 via the slide rod 39, while the roller unit 4 generates radial vibration under the guidance of the second arc groove 23, continuously disturbing the residual fluid in the drainage tube assembly 5 to prevent fluid deposition and blockage; by Since the ring block 32 cannot rotate in reverse, the sector block 31 and the two support arms B37 cannot rotate in reverse either. The roller units 4 connected to the two support arms B37 are respectively stopped at the corresponding positions of the first arc groove 21 and the third arc groove 24. The roller unit 4 stopped in the first arc groove 21 continuously compacts and seals the drainage tube assembly 5 to prevent the accumulated fluid from flowing back into the patient's body. The roller unit 4 stopped in the third arc groove 24 remains detached from the drainage tube assembly 5. This mode can continuously disturb the accumulated fluid in the tube without suctioning to prevent sedimentation, so that medical staff do not need to frequently patrol and manually handle the drainage tube. Intermittent suction with strong anti-blockage mode: suitable for patients whose conventional vibration anti-blockage effect is insufficient due to high viscosity of the effusion; the external control mechanism has multiple gears, each gear includes a 360° push and a preset number of reciprocating swings, with different gears corresponding to different numbers of reciprocating swings; the micro motor 63 first drives the central shaft 36 to rotate 360° clockwise to complete one push action, pushing the effusion accumulated in the guide tube assembly 5 towards the collection direction once; after the push is completed, the micro motor 63 drives the central shaft 36 to perform a preset number of symmetrical reciprocating rotational movements for that gear, that is, the forward rotation angle is equal to the reverse rotation angle, and the maximum swing angle is limited by both ends of the fan-shaped groove 35, so that the roller unit 4 connected to the support arm A34 always reciprocates within the second arc groove 23, and the residual effusion in the guide tube assembly 5 is continuously disturbed, realizing intermittent suction and continuous disturbance, while avoiding blockage caused by continuous suction for effusion with excessively high viscosity; In the workstation corresponding to the second arc groove 23, the pressure roller 43 on the roller unit 4 connected to the support arm A34 is in movable cooperation with the arc plate 541. When the pressure roller 43 moves radially back and forth in the second arc groove 23, the arc plate 541 disperses the extrusion pressure to a larger area of ​​the elastic tube 54 wall, increasing the disturbance range of the liquid in the tube. At the same time, the energy storage and release of the spring 544 causes the arc plate 541 to drive the elastic tube 54 to produce regular tension and relaxation deformation, assisting the guide hose 55 to deform and reset, forming a breathing vibration, improving the disturbance efficiency of the liquid in the tube, thereby further preventing the guide hose 55 from depositing and clogging.

[0046] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A device for aspirating pleural effusion, characterized in that, The device includes a body (1), a front cavity (11) is provided on one side of the body (1), and closed channels (2) are provided at both ends of the front cavity (11). A rotating frame (3) is rotatably provided in the front cavity (11). Three roller units (4) are slidably connected on the rotating frame (3) in a ring-shaped and equally spaced structure. The two ends of the roller units (4) are movably connected to the two closed channels (2) respectively. A guide tube assembly (5) is provided in the front cavity (11). The roller units (4) are movably engaged with the guide tube assembly (5). A rotating mechanism (6) for driving the rotating frame (3) to rotate is provided in the body (1). The closed channel (2) includes a first arc groove (21), an inclined guide groove A (22), a second arc groove (23), a third arc groove (24) and an inclined guide groove B (25) arranged sequentially along the circumferential direction; The radius of the first arc groove (21) is greater than the radius of the third arc groove (24). When the roller unit (4) moves in the first arc groove (21), the roller unit (4) compacts and rolls the guide tube assembly (5) to transport the fluid in the patient’s body to the collection direction. The second arc groove (23) is composed of several V-shaped grooves arranged in an arc shape, with their ends connected in sequence. When the roller unit (4) moves in the second arc groove (23), the roller unit (4) moves radially back and forth, causing the contact position between the guide pipe assembly (5) and the roller unit (4) to deform. This deformation is transmitted to the liquid inside the pipe through the pipe wall, causing disturbance to the liquid inside the pipe, thereby reducing the deposition of liquid on the pipe wall.

2. The pleural effusion aspiration device according to claim 1, characterized in that, The oblique guide groove A (22) and oblique guide groove B (25) have the same structure, and the sum of the central angles corresponding to the first arc groove (21) and the oblique guide groove A (22) is 120°.

3. The pleural effusion aspiration device according to claim 1, characterized in that, The surface of the body (1) is provided with a replacement cavity (12) communicating with the front cavity (11). Half holes A (10) are provided on both sides of the bottom end of the replacement cavity (12). Connecting grooves (13) are provided on both sides of the bottom of the replacement cavity (12). Threaded grooves (14) are provided in the connecting grooves (13). A rear cavity (15) is provided on the other side of the body (1). A battery pack (16) is fixed in the rear cavity (15). A connector groove (17) communicating with the rear cavity (15) is provided on the surface of the body (1). A charging connector (18) is fixed in the connector groove (17). The output end of the charging connector (18) is connected to the input end of the battery pack (16). An installation cavity (19) is provided in the gap between the front cavity (11) and the rear cavity (15). An installation groove (110) is provided on the side of the installation cavity (19) away from the front cavity (11).

4. The pleural effusion aspiration device according to claim 3, characterized in that, The rotating frame (3) includes a sector block (31). A ring block (32) is fixedly provided at one end of the sector block (31) near the mounting cavity (19). The ring block (32) is rotatably connected to the mounting cavity (19) through a one-way bearing (33), so that the ring block (32) can only rotate in a clockwise direction. A sector groove (35) is provided on the surface of the sector block (31). A support arm A (34) is provided in the sector groove (35). A central shaft (36) is fixed on the support arm A (34). The central shaft (36) is close to the mounting cavity (19). One end of the mounting cavity (19) extends out of the ring block (32) and is fixedly connected to the output end of the rotating mechanism (6). Two support arms B (37) are fixedly mounted on the fan-shaped block (31) in a symmetrical structure. Sliding holes (38) are opened on the eccentric ends of the support arm A (34) and the two support arms B (37). Sliding rods (39) are slidably mounted on the sliding holes (38). In the initial state, the support arm A (34) contacts the fan-shaped groove (35) at one end clockwise, and the distance between any two adjacent sliding rods (39) is equal.

5. The pleural effusion aspiration device according to claim 4, characterized in that, The roller unit (4) includes a rotating seat (41), three rotating seats (41) are respectively fixed to the eccentric ends of three sliding rods (39), a rotating shaft (42) is rotatably connected to the rotating seat (41), a pressure roller (43) is fixed on the rotating shaft (42), and movable columns (44) are rotatably provided at both ends of the rotating shaft (42), and the movable columns (44) are movably connected to the closed channel (2).

6. The pleural effusion aspiration device according to claim 5, characterized in that, The flow guide tube assembly (5) includes two clamping arms (51) arranged in a symmetrical structure. The two clamping arms (51) are rotatably disposed in the displacement cavity (12) by a rotating rod. The inner surface of the clamping arm (51) is arc-shaped. A groove (52) is opened on the inner surface of the clamping arm (51). An elastic pad (53) is fixed on the groove (52). An elastic tube (54) is fixed on the elastic pad (53). The elastic tube (54) is movably engaged with the pressure roller (43). A half hole B (59) is opened at the end of the clamping arm (51) away from the rotating rod. The half hole B (59) is connected to the half hole A (10) to form an outlet hole. A chamfer is opened at the top of the outlet hole. The gap between the two outlet holes and the two elastic tubes (54) forms a limiting channel. A flow guide tube (55) is movably connected to the limiting channel.

7. The pleural effusion aspiration device according to claim 6, characterized in that, The bottom of the clamping arm (51) is fixedly provided with a connecting block (56), the connecting block (56) is movably engaged with the connecting groove (13), the connecting block (56) is threadedly connected with a threaded rod (57), the threaded rod (57) is threadedly connected with the threaded groove (14), and a knob (58) is fixedly provided at the end of the threaded rod (57) away from the threaded groove (14).

8. The pleural effusion aspiration device according to claim 7, characterized in that, Two sliding grooves (511) are symmetrically opened on the inner surface of the clamping arm (51) near the second arc groove (23), and the two sliding grooves (511) are connected by a movable groove (512).

9. The pleural effusion aspiration device according to claim 8, characterized in that, An arc plate (541) is fixed at the centripetal end of the elastic tube (54) near the second arc groove (23). The arc plate (541) is movably engaged with the pressure roller (43). Slide plates (542) are fixed at both ends of the arc plate (541). The two slide plates (542) are slidably connected to the two slide grooves (511) respectively. The two slide plates (542) are fixedly connected by a movable block (543). The movable block (543) is slidably disposed in the movable groove (512). The movable block (543) and the movable groove (512) are elastically connected by a spring (544).

10. The pleural effusion aspiration device according to claim 9, characterized in that, The rotating mechanism (6) includes a large gear (61) and a micro motor (63). The large gear (61) is rotatably disposed in the mounting cavity (19) and fixedly connected to the central shaft (36). The large gear (61) has several weight-reducing grooves. A small gear (62) is meshed on the large gear (61). The small gear (62) is rotatably connected to the mounting cavity (19). The micro motor (63) is fixedly disposed in the mounting groove (110). The micro motor (63) is electrically connected to the battery pack (16). The gear shaft of the small gear (62) passes through the mounting groove (110) and is fixedly connected to the output shaft of the micro motor (63).

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