Cleaning device for neurosurgical intracranial tumor operation instruments

Abstract

The application relates to the technical field of medical instruments, and discloses a cleaning device for neurosurgical intracranial tumor operation instruments, which comprises a protection box, a protection door rotatably arranged on one side of the protection box, a plurality of connecting plates welded on the inner wall of the protection box, a cleaning box fixedly connected to one side of every two connecting plates through bolts, and a box door arranged on one side of the cleaning box. The cleaning device is provided with a blowing shaft, a filter plate and other structures. After cleaning is completed, the driving shaft is reversely rotated, the transmission shaft and the driven shaft are used to rotate the blowing shaft, the heating wire is started, hot air is blown to dry the instruments, the filter plate and the dustproof plate are used to effectively prevent external dust from entering and affecting the cleaning quality, the instruments are dried after cleaning is completed, and the ultraviolet lamp is used for re-disinfection and sterilization, so that the practicability of the device is better. The above technical scheme solves the problems of poor practicability and low efficiency in the prior art.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery. Background Technology

[0002] Currently, neurosurgery is a specialized branch of surgery that focuses on the study of injuries, inflammations, tumors, and deformities of the human nervous system (including the brain, spinal cord, and peripheral nervous system) and its related accessory structures (such as the skull, scalp, cerebral blood vessels, and meninges), as well as certain inherited metabolic disorders or functional disorders (such as epilepsy, Parkinson's disease, and neuralgia).

[0003] The prior art, patent number CN214857634U, discloses a cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery. This device includes a housing, connecting grooves, a cleaning box, a connecting rod, a baffle, a vibration motor, a battery, a switch, a movable plate, a connecting plate, a limiting plate, a handle, and a drain hole. The bottom of the cleaning box has a baffle, which houses the vibration motor and battery. The switch is located on the reverse side of the battery. The other side of the cleaning box has a movable plate, a connecting plate, and a limiting plate. The limiting plate has a handle. Connecting grooves are located on both sides of the top of the housing, into which the cleaning device can be placed. The bottom of the cleaning box has a drain hole. This device can clean multiple surgical instruments simultaneously without contaminating each other, thus improving cleaning efficiency.

[0004] However, after cleaning is completed, the movement of the baffle needs to be manually controlled to drive the discharge of cleaning water. At the same time, the instrument needs to be dried separately, which is not very practical. In addition, multiple cleaning boxes need to be operated manually, which is inefficient.

[0005] The prior art, patent publication number CN216500898U, discloses a surgical instrument cleaning device. This device includes a housing, a support, an electric push rod, a drive box, a motor, a mounting box, a slide rod, two second sliders, a spring, a positioning plate, a cleaning plate, and a water pump. The support is fixed to the top of the housing, the electric push rod is mounted on the top of the support, and its bottom end is connected to the drive box. The drive box contains a motor, and the bottom of the motor is connected to the mounting box. The mounting box contains a slide rod with two second sliders mounted on it, connected by a spring. The bottom of the sliders is fixed to a positioning plate. The housing contains a cleaning plate, and water pumps are mounted on both sides. This patent controls the instrument position through the electric push rod, drive box, and motor, while the water pumps and cleaning plate rinse the instruments. Combined with a cleaning brush, it improves the cleaning effect of surgical instruments.

[0006] However, after the cleaning process is completed, the device needs to be dried or wiped dry manually, which makes it less practical. Summary of the Invention

[0007] This invention proposes a cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery, which solves the problems in related technologies.

[0008] The technical solution of the present invention is as follows: a cleaning device for surgical instruments for intracranial tumors in neurosurgery, comprising a protective box, a protective door rotatably installed on one side of the protective box, several connecting plates welded to the inner wall of the protective box, a cleaning box being fixedly connected to one side of every two connecting plates by bolts, a box door installed on one side of the cleaning box, an ultraviolet lamp installed on the inner wall of the cleaning box, a baffle plate slidably assembled inside the cleaning box, a sealing gasket fixedly connected to the baffle plate, a fixing plate fixedly connected to the inner wall of the cleaning box by bolts, a telescopic plate slidably assembled inside the fixing plate, a bearing plate rotatably welded to the top of two telescopic plates, several through holes opened on the cleaning box, a drive motor installed on one side of one of the fixing plates, a square plate one and a square plate two welded to the inner wall of the cleaning box respectively, a vibration shaft and a drive shaft rotatably mounted on the square plate one respectively, an eccentric wheel welded to one end of the vibration shaft, and a transmission belt fixedly sleeved on the outer circumferential surface of the drive shaft and the vibration shaft respectively;

[0009] A drive shaft is rotatably mounted on both the square plate 2 and the cleaning box. A drive bevel gear is movably sleeved on the outer circumference of the drive shaft. A first drive bevel gear and a second drive bevel gear are fixedly sleeved on the outer circumference of the drive shaft, respectively. Two support plates are welded to one side of the cleaning box. A driven shaft is rotatably mounted on both support plates. A driven bevel gear is fixedly sleeved on the outer circumference of the driven shaft. A dustproof plate is fixedly connected to the cleaning box. A blower shaft is rotatably mounted on the dustproof plate. A fan is mounted on the blower shaft. A synchronous belt is mounted on the outer circumference of both the blower shaft and the driven shaft. A support frame is fixedly connected to the inner wall of the cleaning box. Several heating wires are installed inside the support frame. A filter plate is fixedly connected to the inner wall of the support frame. A rotating wheel is fixedly sleeved on the outer circumference of the drive shaft. A pawl is movably hinged to one side of the rotating wheel. A ratchet is welded to one side of the drive bevel gear.

[0010] Preferably, a drive gear is fixedly sleeved on the outer circumferential surface of the drive shaft, a rack plate is slidably assembled inside the cleaning box, two tooth blocks are slidably assembled on the rack plate, movable blocks are welded to both sides of the tooth blocks, two fixed blocks are welded to both sides of the rack plate, a fixed rod is welded to one side of the fixed block, the movable block is slidably assembled on the outer circumferential surface of the fixed rod, and a connecting rod is fixedly connected to both the baffle and the rack plate.

[0011] Preferably, four circumferentially distributed straight rods are fixedly sleeved on the outer circumferential surface of the blower shaft, and a cleaning rod is fixedly connected to the bottom end of the straight rods. An inclined slide plate is installed on the inner wall of the protective box, a discharge pipe is installed on the protective box, and a filter screen is fixedly connected to the inner wall of the protective box.

[0012] Preferably, a synchronous pulley is fixedly sleeved on the outer peripheral surface of both the driven shaft and the blower shaft, and the synchronous belt is jointly installed on the outer peripheral surface of the two synchronous pulleys.

[0013] Preferably, the driving bevel gear meshes with the first transmission bevel gear, and the second transmission bevel gear meshes with the driven bevel gear.

[0014] Preferably, transmission wheels are fixedly sleeved on the outer peripheral surfaces of both the vibration shaft and the drive shaft, and the transmission belt is mounted together on the outer peripheral surfaces of the two transmission wheels.

[0015] Preferably, the fixed plate has a groove, the telescopic plate is slidably connected inside the groove, and a return spring is fixedly connected between the telescopic plate and the inner wall of the groove.

[0016] Preferably, the movable block has a circular hole, the fixed rod passes through the inside of the circular hole, and a drive spring is fixedly connected to one side of both the movable block and the fixed block.

[0017] The working principle and beneficial effects of this invention are as follows:

[0018] 1. In this invention, by setting up structures such as the blower shaft and filter plate, after cleaning is completed, the drive shaft reverses and the blower shaft rotates through the transmission shaft and driven shaft. At the same time, the heating wire is activated to blow hot air to dry the instruments. The filter plate and dustproof plate effectively prevent external dust from entering and affecting the cleaning quality. After cleaning, the instruments are dried, and ultraviolet lamps are used to achieve secondary disinfection and sterilization, making the device more practical.

[0019] 2. In this invention, by setting up structures such as drive gears and rack plates, the transmission shaft drives the drive gear to rotate the rod, thereby realizing the movement of the rack plate. Then, the movement of the baffle is realized through the connecting rod. When the baffle opens, it cooperates with the vibration of the bearing plate to accelerate the discharge of cleaning water. At the same time, the setting of the through hole can prevent the instrument from being discharged, while saving manual operation steps and improving the efficiency of cleaning work.

[0020] 3. In this invention, by setting up structures such as cleaning rods and straight rods, the straight rod drives the cleaning rod to rotate during the blowing process, thereby cleaning the dustproof plate and preventing foreign objects from accumulating on the dustproof plate, which would affect the air intake and the drying of the instruments, thus making the device more practical. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the cleaning box of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the fixed plate and the sliding plate of the present invention;

[0025] Figure 4 This is a schematic diagram of the drive shaft and driven shaft of the present invention;

[0026] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0027] Figure 6 This is a schematic diagram of the ratchet and pawl of the present invention.

[0028] In the diagram: 1. Protective box; 2. Cleaning box; 3. Protective door; 4. Box door; 5. Fixing plate; 6. Telescopic plate; 7. Bearing plate; 8. Baffle; 9. Connecting plate; 10. Support plate; 11. Driven shaft; 12. Blower shaft; 13. Synchronous belt; 14. Fan; 15. Support frame; 16. Heating wire; 17. Filter plate; 18. Square plate one; 19. Drive motor; 20. Drive shaft; 21. Vibration shaft; 22. Transmission belt; 23. Eccentric wheel; 24. Driving bevel gear; 25. Square plate two; 26. Drive shaft; 27. Drive bevel gear one; 28. Drive bevel gear two; 29. ​​Driven bevel gear; 30. Rack plate; 31. Connecting rod; 32. Drive gear; 33. Fixed block; 34. Fixed rod; 35. Ratchet; 36. Rotating wheel; 37. Pawl; 38. Filter screen; 39. Dustproof plate; 40. Straight rod; 41. Cleaning rod; 42. Tooth block; 43. Moving block; 44. Return spring. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1

[0031] like Figures 1-6As shown, this embodiment proposes a cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery, including a protective box 1. A protective door 3 is rotatably installed on one side of the protective box 1. Several connecting plates 9 are welded to the inner wall of the protective box 1. A cleaning box 2 is bolted to one side of every two connecting plates 9. A box door 4 is installed on one side of the cleaning box 2. An ultraviolet lamp is installed on the inner wall of the cleaning box 2. A baffle 8 is slidably fitted inside the cleaning box 2. A sealing gasket is fixedly connected to the baffle 8. A fixing plate 5 is bolted to the inner wall of the cleaning box 2. A telescopic plate 6 is slidably fitted inside the fixing plate 5. The tops of the two telescopic plates 6 rotate together. A support plate 7 is welded on the cleaning box 2, which has several through holes. A drive motor 19 is installed on one side of a fixed plate 5. Square plate 18 and square plate 25 are welded to the inner wall of the cleaning box 2. A vibration shaft 21 and a drive shaft 20 are rotatably mounted on square plate 18. An eccentric wheel 23 is welded to one end of the vibration shaft 21. A transmission belt 22 is fixedly sleeved on the outer circumference of the drive shaft 20 and the vibration shaft 21. A drive shaft 26 is rotatably mounted on both square plate 25 and the cleaning box 2. A drive bevel gear 24 is movably sleeved on the outer circumference of the drive shaft 20. A drive bevel gear is fixedly sleeved on the outer circumference of the drive shaft 26. Wheel 1 27 and transmission bevel gear 28; two support plates 10 are welded to one side of the cleaning box 2, and a driven shaft 11 is rotatably mounted on both support plates 10. A driven bevel gear 29 is fixedly sleeved on the outer circumference of the driven shaft 11. A dustproof plate 39 is fixedly connected to the cleaning box 2, and a blower shaft 12 is rotatably mounted on the dustproof plate 39. A fan 14 is mounted on the blower shaft 12. A synchronous belt 13 is mounted on the outer circumference of the blower shaft 12 and the driven shaft 11. A support frame 15 is fixedly connected to the inner wall of the cleaning box 2. Several heating wires 16 are installed inside the support frame 15. A filter plate 1 is fixedly connected to the inner wall of the support frame 15. 7. A rotating wheel 36 is fixedly sleeved on the outer circumferential surface of the drive shaft 20. A pawl 37 is movably hinged to one side of the rotating wheel 36. A ratchet 35 is welded to one side of the drive bevel gear 24. Through the arrangement of structures such as the blower shaft 12 and the filter plate 17, after cleaning is completed, the drive shaft 20 reverses, and the blower shaft 12 is rotated through the transmission shaft 26 and the driven shaft 11. At the same time, the heating wire 16 is activated to blow hot air to dry the instruments. The filter plate 17 and the dustproof plate 39 effectively prevent external dust from entering and affecting the cleaning quality. After cleaning, the instruments are dried, and ultraviolet lamps are used to disinfect and sterilize them again, making the device more practical.

[0032] like Figures 2-4 As shown, synchronous pulleys are fixedly fitted on the outer circumferential surfaces of both the driven shaft 11 and the blower shaft 12, and the synchronous belt 13 is installed on the outer circumferential surfaces of the two synchronous pulleys.

[0033] like Figures 2-4As shown, the driving bevel gear 24 meshes with the first transmission bevel gear 27, and the second transmission bevel gear 28 meshes with the driven bevel gear 29.

[0034] like Figures 2-4 As shown, transmission wheels are fixedly sleeved on the outer circumferential surfaces of both the vibration shaft 21 and the drive shaft 20, and the transmission belt 22 is installed on the outer circumferential surfaces of the two transmission wheels.

[0035] like Figures 2-3 As shown, a groove is provided on the fixed plate 5, and the telescopic plate 6 is slidably connected inside the groove. A return spring 44 is fixedly connected between the telescopic plate 6 and the inner wall of the groove.

[0036] The specific implementation principle of this embodiment is as follows: Drive motor 19 is a servo motor. Drive motor 19 starts and drives the drive shaft 20 to rotate. The drive shaft 20 rotates the vibration shaft 21 via the transmission belt 22, which in turn rotates the eccentric wheel 23. Combined with the sliding of the return spring 44 and the telescopic plate 6, this causes the support plate 7 to vibrate. The instrument is placed on the support plate 7, and cleaning water is injected through the water inlet pipe on the cleaning tank 2. Then, drive motor 19 is started to achieve a more thorough cleaning. After cleaning is complete, drive motor 19 drives the drive shaft 20 to reverse. The ratchet 35 and pawl 37 restrict the rotation of the ratchet, allowing the vibration of the support plate 7 to continue. When the drive shaft 20 rotates forward, it will not drive the drive bevel gear 24 to rotate, but it can drive it in reverse. Due to the meshing of the drive bevel gear 24 and the first transmission bevel gear 27, the transmission shaft 26 drives the rod. Due to the meshing of the second transmission bevel gear 28 and the driven bevel gear 29, the driven shaft 11 rotates. The rotation of the blower shaft 12 is achieved through the synchronous belt 13. The blower shaft 12 drives the fan 14 to rotate, which activates the heating wire 16, so that hot air blows on the instrument to dry it. After drying is completed, the ultraviolet lamp is activated to achieve sterilization and disinfection again. The dustproof plate 39 and the filter plate 17 can effectively prevent dust from entering and affecting the cleaning quality.

[0037] Example 2

[0038] like Figures 1-6As shown, based on the same concept as Embodiment 1 above, this embodiment also proposes that a drive gear 32 is fixedly sleeved on the outer circumferential surface of the drive shaft 26, a rack plate 30 is slidably assembled inside the cleaning box 2, two tooth blocks 42 are slidably assembled on the rack plate 30, movable blocks 43 are welded on both sides of the tooth blocks 42, two fixed blocks 33 are welded on both sides of the rack plate 30, a fixed rod 34 is welded on one side of the fixed block 33, the movable blocks 43 are slidably assembled on the outer circumferential surface of the fixed rod 34, and a connecting rod 31 is fixedly connected to the baffle 8 and the rack plate 30. Through the arrangement of the drive gear 32, rack plate 30 and other structures, the drive shaft 26 drives the drive gear 32 to rotate the rod, realizing the movement of the rack plate 30, and then realizing the movement of the baffle 8 through the connecting rod 31. When the baffle 8 opens, it cooperates with the vibration of the bearing plate 7 to accelerate the discharge of cleaning water. At the same time, the setting of the through hole can prevent the discharge of instruments, save manual operation steps, and improve the efficiency of cleaning work.

[0039] like Figures 4-5 As shown, a circular hole is provided on the movable block 43, and the fixed rod 34 passes through the inside of the circular hole. A drive spring is fixedly connected to one side of both the movable block 43 and the fixed block 33.

[0040] The specific implementation principle of this embodiment is as follows: the transmission shaft 26 drives the drive gear 32 to rotate, and the drive gear 32 drives the rack plate 30 to move. Due to the setting of the tooth block 42, the distance that the drive gear 32 drives the tooth block 42 is limited. The tooth block 42 is reset by the drive spring. The tooth block 42 is restricted by a stop block welded to one end of the fixing rod 34. Thus, when the drive gear 32 reverses, it can drive the rack plate 30 to reset. The rack plate 30 moves the baffle 8 through the connecting rod 31, thereby realizing the discharge of clean water.

[0041] Example 3

[0042] like Figures 1-6 As shown, based on the same concept as Embodiments 1 and 2 above, this embodiment also proposes that four circumferentially distributed straight rods 40 are fixedly sleeved on the outer circumferential surface of the blower shaft 12. A cleaning rod 41 is fixedly connected to the bottom end of the straight rod 40. An inclined slide plate is installed on the inner wall of the protective box 1. A discharge pipe is installed on the protective box 1. A filter screen 38 is fixedly connected to the inner wall of the protective box 1. Through the arrangement of the cleaning rod 41, straight rod 40 and other structures, during the blowing process, the straight rod 40 drives the cleaning rod 41 to rotate, thereby cleaning the dustproof plate 39 and preventing foreign objects from accumulating on the dustproof plate 39, affecting the air intake and the drying of the instruments, thus making the device more practical.

[0043] In this embodiment, the cleaning water is guided by the inclined slider and then discharged through the water outlet pipe. The cleaning debris is intercepted by the filter screen 38 and left inside the protective box 1, where it is piled up for easy disposal. The blower shaft 12 drives the straight rod 40 to rotate, and the straight rod 40 drives the cleaning rod 41 to rotate, thereby cleaning the dustproof plate 39 and preventing foreign objects from clogging and affecting the blowing effect.

[0044] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery, comprising a protective case (1), characterized in that, A protective door (3) is rotatably installed on one side of the protective box (1). Several connecting plates (9) are welded to the inner wall of the protective box (1). A cleaning box (2) is fixedly connected to one side of every two connecting plates (9) by bolts. A box door (4) is installed on one side of the cleaning box (2). An ultraviolet lamp is installed on the inner wall of the cleaning box (2). A baffle (8) is slidably installed inside the cleaning box (2). A sealing gasket is fixedly connected to the baffle (8). A fixing plate (5) is fixedly connected to the inner wall of the cleaning box (2) by bolts. An extension is slidably installed inside the fixing plate (5). The top of the two telescopic plates (6) is welded together with a bearing plate (7). The cleaning box (2) has several through holes. A drive motor (19) is installed on one side of one of the fixed plates (5). Square plate one (18) and square plate two (25) are welded to the inner wall of the cleaning box (2). A vibration shaft (21) and an active shaft (20) are rotatably installed on the square plate one (18). An eccentric wheel (23) is welded to one end of the vibration shaft (21). A transmission belt (22) is fixedly sleeved on the outer circumference of the active shaft (20) and the vibration shaft (21). A drive shaft (26) is rotatably mounted on the square plate (25) and the cleaning box (2). A drive bevel gear (24) is movably sleeved on the outer circumferential surface of the drive shaft (20). A drive bevel gear (27) and a drive bevel gear (28) are respectively fixedly sleeved on the outer circumferential surface of the drive shaft (26). Two support plates (10) are welded to one side of the cleaning box (2). A driven shaft (11) is rotatably mounted on the two support plates (10). A driven bevel gear (29) is fixedly sleeved on the outer circumferential surface of the driven shaft (11). A dustproof plate (39) is fixedly connected to the cleaning box (2). A drive bevel gear (29) is rotatably mounted on the dustproof plate (39). A blower shaft (12) is mounted on the drive shaft (12), a fan (14) is mounted on the blower shaft (12), a synchronous belt (13) is mounted on the outer circumferential surface of the blower shaft (12) and the driven shaft (11), a support frame (15) is fixedly connected to the inner wall of the cleaning box (2), a number of heating wires (16) are installed inside the support frame (15), a filter plate (17) is fixedly connected to the inner wall of the support frame (15), a rotating wheel (36) is fixedly sleeved on the outer circumferential surface of the drive shaft (20), a ratchet (37) is movably hinged on one side of the rotating wheel (36), and a ratchet (35) is welded to one side of the drive bevel gear (24). The ratchet 35 and pawl 37 restrict the rotation of the drive shaft 20 so that it will not drive the drive bevel gear 24 when it rotates forward, but it can drive it when it rotates in reverse.

2. The cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery according to claim 1, characterized in that, A drive gear (32) is fixedly sleeved on the outer circumferential surface of the drive shaft (26). A rack plate (30) is slidably assembled inside the cleaning box (2). Two tooth blocks (42) are slidably assembled on the rack plate (30). Movable blocks (43) are welded on both sides of the tooth blocks (42). Two fixed blocks (33) are welded on both sides of the rack plate (30). A fixed rod (34) is welded on one side of the fixed block (33). The movable block (43) is slidably assembled on the outer circumferential surface of the fixed rod (34). A connecting rod (31) is fixedly connected to both the baffle (8) and the rack plate (30).

3. The cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery according to claim 1, characterized in that, Four straight rods (40) evenly distributed around the outer circumference are fixedly sleeved on the outer circumference of the blower shaft (12). A cleaning rod (41) is fixedly connected to the bottom end of the straight rod (40). An inclined slide plate is installed on the inner wall of the protective box (1). A discharge pipe is installed on the protective box (1). A filter screen (38) is fixedly connected to the inner wall of the protective box (1).

4. The cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery according to claim 1, characterized in that, Synchronous pulleys are fixedly fitted on the outer circumferential surfaces of both the driven shaft (11) and the blower shaft (12), and the synchronous belt (13) is installed together on the outer circumferential surfaces of the two synchronous pulleys.

5. The cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery according to claim 1, characterized in that, The driving bevel gear (24) meshes with the first transmission bevel gear (27), and the second transmission bevel gear (28) meshes with the driven bevel gear (29).

6. The cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery according to claim 1, characterized in that, Both the vibration shaft (21) and the drive shaft (20) are fixedly fitted with transmission wheels on their outer circumferential surfaces, and the transmission belt (22) is installed together on the outer circumferential surfaces of the two transmission wheels.

7. The cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery according to claim 1, characterized in that, The fixed plate (5) is provided with a sliding groove, and the telescopic plate (6) is slidably connected inside the sliding groove. A return spring (44) is fixedly connected between the telescopic plate (6) and the inner wall of the sliding groove.

8. The cleaning device for surgical instruments used in neurosurgical intracranial tumor surgery according to claim 2, characterized in that, The movable block (43) has a circular hole, and the fixed rod (34) passes through the inside of the circular hole. The movable block (43) and the fixed block (33) are both fixedly connected to one side of a drive spring.

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