Aspirator with retraction function

Abstract

The invention discloses an aspirator with a retraction function, which comprises a tube body, a handle and a connector which are sequentially connected with one end of the tube body, and a retraction assembly arranged on the tube body, wherein the retraction assembly comprises a mounting part, a retraction part and an elastic part, and the mounting part is arranged on the tube body; the operation plate is arranged on the mounting part; the retraction plate is arranged on the mounting part and is positioned at one end of the operation plate; the self-locking transmission part is in transmission connection with the operation plate and the retraction plate; when the operation plate is pressed, the self-locking transmission part drives the retraction plate to rotate around the end, connected with the installation part, of the retraction plate so as to retract and shield the brain tissue. During use, the self-locking transmission part can drive the retracting plate to rotate around the end, connected with the mounting part, of the retracting plate by pressing the operating plate so as to retract the shielded brain tissue, a main knife and an assistant do not need to be matched with each other, one main knife can retract the shielded brain tissue at different degrees and angles, the coordination difficulty and operation complexity of an operation team are reduced, and the operation efficiency is improved. And the surface of the brain tissue can be conveniently covered with a brain cotton sheet.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and specifically to a suction device with a retracting function. Background Art

[0002] A suction device is one of the commonly used medical devices in neurosurgery and is widely used in neurosurgical operations. During the operation, suction of deep lesions in the brain tissue through the suction device is a common and crucial operation. However, the current suction device has the following defects: due to the softness and deformability of the brain tissue, when sucking deep lesions, the tunnel formed around the suction device is prone to partial or complete occlusion of the surgical field due to the collapse of the brain tissue, affecting the precise operation of the surgeon on the lesion. To keep the surgical field clear, the conventional operation requires an assistant to hold a retractor plate to retract the collapsed brain tissue. However, this method requires close cooperation between the surgeon and the assistant, increasing the coordination difficulty and operation complexity of the surgical team. Therefore, we propose a suction device with a retracting function. Summary of the Invention

[0003] The purpose of the present invention is to provide a suction device with a retracting function to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A suction device with a retracting function includes a tube body, a handle and a connector sequentially connected to one end of the tube body, and a retracting assembly provided on the tube body;

[0006] Among them, the retracting assembly includes:

[0007] An installation part provided on the tube body;

[0008] An operation plate provided on the installation part;

[0009] A retractor plate provided on the installation part and located at one end of the operation plate;

[0010] A self-locking transmission part drivingly connecting the operation plate and the retractor plate;

[0011] When the operation plate is pressed, the self-locking transmission part drives the retractor plate to rotate around the end connected to the installation part to retract and block the brain tissue.

[0012] Further improvement lies in that the self-locking transmission part includes:

[0013] A mounting seat is arranged on the pipe body, an active rod is rotatably arranged in the mounting seat, a ratchet wheel is sleeved on the outer wall of the active rod, sleeve rods are movably sleeved on both ends of the active rod, and the sleeve rods are fixedly connected to one end of the operating panel, an end of the sleeve rod is rotatably connected to the inner wall of the mounting seat, and a connecting elastic member is provided at the connection between the sleeve rod and the mounting seat;

[0014] A toggle ratchet is rotatably disposed in the operating panel and meshes with the ratchet wheel, and is used to drive the ratchet wheel to rotate when the operating panel is pressed. A connecting elastic member is also provided at the connection between the shaft of the toggle ratchet and the operating panel;

[0015] The transmission rod is rotatably arranged in the mounting seat and is located between the active rod and the retraction plate. One end of the retraction plate is rotatably connected to the inner wall of the mounting seat through the driven rod. The transmission rod, the driven rod and the active rod are connected through a transmission gear set.

[0016] A further improvement is that a reset drive unit is provided on the mounting seat, which is used to drive the retraction plate to reset and rotate to fit the tube body when the operating plate moves to a side away from the mounting seat.

[0017] A further improvement is that the reset drive unit comprises:

[0018] Two sets of sliders are respectively arranged at the two ends of the active rod and are respectively slidably arranged in the slide grooves opened on the inner walls of the two sides of the mounting seat, and a spring member is arranged between the slider and the inner wall of the slide groove;

[0019] The second ratchet is sleeved on the end of the driven rod, and a connecting elastic member is provided at the connection between the driven rod and the mounting seat;

[0020] One end of the elastic telescopic clamping plate is in sliding contact with the teeth of the second ratchet wheel, and the other end is connected with the sliding block.

[0021] A further improvement is that the vertical cross section of the retraction plate is arc-shaped, and the retraction plate comprises:

[0022] The arc-shaped portion 1 has grooves at both ends;

[0023] Two groups of arc-shaped portions 2 are respectively arranged at two ends of the arc-shaped portion 1, and movable plates are arranged at opposite ends of the two groups of arc-shaped portions 2. The two groups of movable plates are respectively located in two groups of grooves, and the movable plates and the grooves are connected by elastic connectors;

[0024] The cavity is opened in the arc-shaped part one and communicated with the groove. The cavity is communicated with the press-type air supply part, and the press-type air supply part is used to inject gas into the cavity so that the movable plate drives the arc-shaped part two to move relative to the arc-shaped part one.

[0025] A further improvement is that the push-type air supply unit comprises:

[0026] The cylinder is embedded in the operating panel, and a piston is movably arranged inside the cylinder. An elastic component is arranged between the piston and the cylinder. One end of the piston is connected to a pull ring, and the pull ring passes through the cylinder and the operating panel and extends to the outside of the operating panel. One end of the cylinder is provided with a one-way air inlet end and a one-way air outlet end, and the other end of the cylinder is provided with an air vent;

[0027] A connecting pipe, one end of which is connected to the cavity, and the other end of which is connected to the one-way air outlet.

[0028] A further improvement is that a connecting groove is provided on the side of the piston facing the pull ring, and the connecting groove and the connecting pipe are connected to each other through an intercommunication hose. Two groups of sealing plates for closing the slot are hinged on the inner wall of the slot, one side of the sealing plate is in contact with one end of the pushing member, and the other end of the pushing member is connected to the inner wall of the cylinder. When the pushing member pulls the pull ring to drive the piston to move away from the retraction plate, the two groups of sealing plates are pushed to flip open. The sealing plate and the inner wall of the connecting groove are connected by an elastic member, and the elastic member drives the sealing plate to return to its original position to close the slot when the pushing member is separated from the sealing plate.

[0029] A further improvement is that the mounting portion comprises:

[0030] A fixing ring is fixedly arranged on the outer wall of the tube body, and a plurality of groups of slots are formed in an annular array on the outer wall of one side of the fixing ring;

[0031] Two groups of mounting rings are symmetrically rotatably sleeved on the outside of the fixing ring, and the two groups of mounting rings are mutually clamped at opposite ends, and a clamping rod for inserting into the clamping slot is movably inserted through a bracket on one of the mounting rings;

[0032] An elastic reset member has one end connected to the clamping rod and the other end connected to the bracket.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] 1) The present invention is provided with a retractor assembly on the tube body. When in use, by pressing the operating plate, the self-locking transmission part can drive the retractor plate to rotate around the end connected to the mounting part to retract the brain tissue. The surgeon and the assistant do not need to cooperate with each other. The surgeon can retract the brain tissue at different degrees and angles, which reduces the coordination difficulty and operation complexity of the surgical team, and is also convenient for covering the brain tissue surface with brain cotton pads;

[0035] 2) The self-locking transmission part in the retraction assembly of the present invention is connected to the operating plate and the retraction plate. When in use, the retraction angle of the retraction plate can be adjusted by pressing the operating plate, and the retraction plate is automatically locked after the operating plate is released, thereby ensuring the stability of the retraction plate when in use;

[0036] 3) The retraction assembly of the present invention also has a press-type air supply part that cooperates with the retraction plate. The retraction area of ​​the retraction plate can be adjusted by the press-type air supply part, thereby improving the flexibility of use;

[0037] 4) The retraction assembly of the present invention can not only independently control the retraction plate to flip and reset or the retraction plate to restore the retraction area, but also simultaneously control the retraction plate to flip and reset and the retraction plate to restore the retraction area, and both operations only require the main surgeon, further improving the flexibility of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the structure of the attractor of the present invention;

[0039] Figure 2 It is a schematic diagram of the structure of the installation part of the present invention;

[0040] Figure 3 For the present invention Figure 1 Schematic diagram of local structure;

[0041] Figure 4 For the present invention Figure 3 A magnified view of the structure A;

[0042] Figure 5 It is a cross-sectional view of the distraction plate structure in the present invention;

[0043] Figure 6 It is a cross-sectional view of the structure of the push-type air supply part in the present invention;

[0044] Figure 7 For the present invention Figure 5 A magnified view of structure B.

[0045] In the figure: 1, tube body; 2, handle; 3, connector; 4, retractor assembly; 41, mounting portion; 411, fixing ring; 412, mounting ring; 413, elastic reset member; 414, clamping rod; 42, operating plate; 43, self-locking transmission portion; 431, mounting seat; 432, sleeve rod; 433, active rod; 434, ratchet wheel 1; 435, ratchet tooth; 436, transmission gear set; 437, transmission rod; 44, retractor plate; 441, arc 442, arc-shaped portion one; 443, movable plate; 444, elastic connecting member; 445, cavity; 45, push-type air supply portion; 451, cylinder; 452, pull ring; 453, connecting pipe; 454, interconnecting hose; 455, connecting groove; 456, sealing plate; 457, elastic member; 458, push member; 459, piston; 46, reset drive portion; 461, slider; 462, elastic telescopic clamp; 463, ratchet two. DETAILED DESCRIPTION

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] Embodiment 1

[0048] Please refer to the attached Figure 1 - attached Figure 3 , a retractor with a suction function, including a tube body 1, a handle 2 and a connector 3 connected to one end of the tube body 1 in sequence. The above tube body 1, handle 2 and connector 3 are all conventional structures of the suction device in the art and will not be described in detail here;

[0049] It further includes a retracting assembly 4 provided on the tube body 1;

[0050] Among them, the retracting assembly 4 includes:

[0051] An installation part 41, provided on the tube body 1;

[0052] An operation board 42, provided on the installation part 41, for the user to press with fingers for operation;

[0053] A retracting board 44, provided on the installation part 41 and located at one end of the operation board 42. The end of the retracting board 44 away from the installation part 41 extends to the end of the tube body 1 away from the handle 2;

[0054] A self-locking transmission part 43, drivingly connecting the operation board 42 and the retracting board 44;

[0055] When the operation board 42 is pressed, the self-locking transmission part 43 drives the retracting board 44 to rotate around the end connected to the installation part 41 to retract and block the brain tissue. When using this retractor, the main surgeon alone can retract and block the brain tissue at different angles according to his own perspective needs, without the need for an assistant to hold another retracting device to retract, and it is also convenient to cooperate with covering the brain surface with brain cotton pads.

[0056] Embodiment 2

[0057] Please refer to the attached Figure 2 , on the basis of Embodiment 1, the installation part 41 of this embodiment includes:

[0058] A fixing ring 411, fixedly arranged on the outer wall of the tube body 1. A plurality of groups of card slots are arranged in a circular array on one outer wall of the fixing ring 411;

[0059] Two sets of mounting rings 412 are symmetrically rotatably sleeved outside the fixed ring 411. An annular groove adapted to the fixed ring 411 is provided on the inner wall of the mounting ring 412. The inner diameter of the mounting ring 412 is greater than the inner diameter of the fixed ring 411 and less than the outer diameter of the fixed ring 411. In this way, the mounting ring 412 will not move axially on the outer wall of the fixed ring 411 while the mounting ring 412 can rotate on the outer wall of the fixed ring 411. The opposite ends of the two sets of mounting rings 412 are snap-connected to each other, and a snap-type structure can be used for connection between the two, which is convenient for disassembling the two sets of mounting rings 412 from the outer wall of the fixed ring 411 or installing them on the outer wall of the fixed ring 411. A clamping rod 414 for inserting into the card slot is movably inserted through a bracket on one of the mounting rings 412. The bracket is L-shaped, and the cross-section of the clamping rod 414 is L-shaped;

[0060] An elastic reset member 413 (such as a spring), one end is connected to the clamping rod 414, and the other end is connected to the bracket. During use, by pulling the clamping rod 414, the mounting ring 412 can be rotated relative to the fixed ring 411, so as to adjust the retracting position of the retracting plate 44. The elastic reset member 413 can make the clamping rod 414 reset into the card slot to fix the mounting ring 412 and the fixed ring 411 and limit the position of the retracting plate 44.

[0061] Embodiment Three

[0062] Please refer to the attached Figure 1 - attached Figure 4 , on the basis of Embodiment One, the self-locking transmission part 43 of this embodiment includes:

[0063] A mounting seat 431, the mounting seat 431 is U-shaped and is arranged on the mounting part 41 (specifically arranged on one of the mounting rings 412). A driving rod 433 is rotatably arranged in the mounting seat 431. A first ratchet wheel 434 is sleeved on the outer wall of the driving rod 433. The first ratchet wheel 434 is used to limit the driving rod 433 to rotate in only one direction. As shown in the attached Figure 1 , specifically, the driving rod 433 rotates clockwise. Sleeve rods 432 are movably sleeved at both ends of the driving rod 433, so that the rotation of the sleeve rod 432 and the rotating rod does not affect each other, and the sleeve rod 432 is fixedly connected to one end of the operating plate 42. By pressing the operating plate 42, the sleeve rod 432 can be driven to rotate relative to the driving rod 433. The end of the sleeve rod 432 is rotatably connected to the inner wall of the mounting seat 431, and a connecting elastic member (such as a torsion spring) is provided at the connection between the sleeve rod 432 and the mounting seat 431. After pressing the operating plate 42 to drive the sleeve rod 432, when the operating plate 42 is released, the connecting elastic member drives the sleeve rod 432 to reset the operating plate 42;

[0064] The toggle ratchet 435 is rotatably disposed in the operating plate 42 and meshes with the ratchet wheel 1 434, and is used to drive the ratchet wheel 1 434 to rotate when the operating plate 42 is pressed. A connecting elastic member (such as a torsion spring) is also provided at the connection between the shaft of the toggle ratchet 435 and the operating plate 42. Initially, the toggle ratchet 435 is clamped into the teeth of the outer wall of the ratchet wheel 1 434. When the operating plate 42 is pressed, the operating plate 42 drives the toggle ratchet 435, and the toggle ratchet 435 drives the ratchet wheel 1 434 to drive the active rod 433 to rotate. When the operating plate 42 is reset, it drives the toggle ratchet 435 to first disengage from the ratchet wheel 1 434 and slide along the inclined surface of the teeth of the ratchet wheel 1 434 before re-locking into the next tooth of the outer wall of the ratchet wheel 1 434.

[0065] The transmission rod 437 is rotatably arranged in the mounting seat 431 and is located between the active rod 433 and the retraction plate 44. One end of the retraction plate 44 is rotatably connected to the inner wall of the mounting seat 431 through the driven rod. The transmission rod 437, the driven rod and the active rod 433 are connected through the transmission gear set 436. The transmission gear set 436 is composed of three sets of meshing gears, so that the driven rod drives the retraction plate 44 to rotate to attach Figure 1 As shown, the driven rod is specifically rotated clockwise.

[0066] Embodiment 4

[0067] Please see attached Figure 1 -Attached Figure 4 On the basis of the third embodiment, a reset driving portion 46 is provided on the mounting seat 431 of this embodiment, which is used to drive the retraction plate 44 to reset and rotate to fit the tube body 1 when the operating plate 42 moves away from the mounting portion 41.

[0068] Preferably, the reset driving unit 46 of this embodiment includes:

[0069] Two groups of sliders 461 are respectively arranged at the two ends of the active rod 433 and are respectively slidably arranged in the slide grooves opened on the inner walls of the two sides of the mounting seat 431. Specifically, the ends of the sleeve rod 432 are also connected to the sliders 461. The two groups of sliders 461 are respectively slidably arranged in the slide grooves opened on the inner walls of the two sides of the mounting seat 431. A spring member is arranged between the slider 461 and the inner wall of the slide groove. Under the action of the spring member, the ratchet 435 is engaged with the ratchet wheel 1 434.

[0070] The second ratchet wheel 463 is sleeved on the end of the driven rod, and a connecting elastic member (such as a torsion spring) is provided at the connection between the driven rod and the mounting seat 431;

[0071] The elastic telescopic clamping plate 462 has one end slidably abutted against the teeth of the second ratchet wheel 463 and the other end connected to the slider 461. The elastic telescopic clamping plate 462 includes a fixed seat fixed on the slider 461, a clamping plate inserted at one end of the fixed seat, one end of the clamping plate is connected to the inner wall of one side of the fixed seat by a spring, and the other end of the clamping plate is embedded with a ball for cooperating with the tooth inclined surface in the second ratchet wheel 463, so that the driven rod can rotate clockwise but not counterclockwise.

[0072] When the user needs to reset the retractor plate 44 (i.e., when the retractor plate 44 is in contact with the pipe body 1), by pulling the operating plate 42 to move outward, the operating plate 42 drives the sleeve rod 432, the sleeve rod 432 drives the slider 461 to squeeze the spring member, and then the elastic telescopic clamping plate 462 is disengaged from the second ratchet wheel 463. After losing the limit of the elastic telescopic clamping plate 462, the driven rod drives the retractor plate 44 to reset under the action of the connecting elastic member. When the operating plate 42 is not pulled, the cooperation between the second ratchet wheel 463 and the elastic telescopic clamping plate 462 makes the rotating retractor plate 44 not reset downward and locks it.

[0073] Embodiment Five

[0074] Please refer to the appendix Figure 1 - Appendix Figure 4 On the basis of Embodiment One, preferably, the cross-section of the retractor plate 44 in this embodiment is arc-shaped. The retractor plate 44 includes:

[0075] The first arc-shaped part 441, with grooves opened at both ends thereof;

[0076] Two groups of second arc-shaped parts 442 are respectively attached to both ends of the first arc-shaped part 441. At the opposite ends of the two groups of second arc-shaped parts 442, there are movable plates 443 respectively. The two groups of movable plates 443 are respectively located in the two grooves. The movable plates 443 and the grooves are connected by elastic connecting members 444 (such as springs);

[0077] The cavity 445 is opened in the first arc-shaped part 441 and communicated with the groove. The cavity 445 is communicated with the pressing air supply part 45. The pressing air supply part 45 is used to inject gas into the cavity 445 so that the movable plate 443 drives the second arc-shaped part 442 to move relative to the first arc-shaped part 441;

[0078] When in use, the pressing air supply part 45 can inject gas into the cavity 445. Then the gas enters the groove to drive the two groups of movable plates 443 to move away from each other. The movable plates 443 drive the second arc-shaped part 442 to move, so as to adjust the retracting area of the retractor plate 44.

[0079] Preferably, the pressing air supply part 45 in this embodiment includes:

[0080] The cylinder body 451 is embedded in the operation panel 42. There is a through hole on the operation panel 42. The cylinder body 451 is specifically fixed in the through hole. A piston 459 is movably arranged inside it. An elastic component (such as a spring) is arranged between the piston 459 and the cylinder body 451. One end of the piston 459 is connected with a pull ring component 452. The pull ring component 452 includes a rod part and a pull ring connected to one end of the rod part. When a user hooks a finger into the pull ring component 452 for operation, the piston 459 can move inside the cylinder body 451. The pull ring component 452 penetrates through the cylinder body 451 and the operation panel 42 and extends to the outside of the operation panel 42. One end of the cylinder body 451 is provided with a one-way air inlet end and a one-way air outlet end. Both the one-way air inlet end and the one-way air outlet end are through holes of internal one-way valves. The other end of the cylinder body 451 is provided with a ventilation port to enable the outside air to enter and exit to maintain the air pressure balance inside the cylinder body 451. It should be noted that when the piston 459 is in the initial position, as shown in the attached Figure 5 - attached Figure 6 state. In this state, the piston 459 can move to one side to discharge the gas inside the cylinder body 451 or move to the other side to compress the elastic component;

[0081] The connecting pipe 453 is connected to the cavity 445 at one end and the one-way air outlet end at the other end;

[0082] When in use, by pressing the pull ring component 452, the piston 459 can be driven to pull the elastic component to move inside the cylinder body 451, and then the gas inside the cylinder body 451 is pressed into the cavity 445. When the pull ring component 452 is released, the elastic component drives the piston 459 to reset to the initial position, and then the outside gas enters the cylinder body 451 through the one-way air inlet end. A filtering structure can be installed in the one-way air inlet end to filter the entering gas.

[0083] Embodiment Six

[0084] Please refer to the attached Figure 6, on the basis of the fifth embodiment, a communication groove 455 is formed on one side of the piston 459 facing the pull ring member 452. The communication groove 455 and the communication pipe 453 are interconnected through an intercommunication hose 454. One end of the intercommunication hose 454 moves with the piston 459. Two groups of sealing plates 456 for closing the notch of the communication groove 455 are hinged on the inner wall of the notch of the communication groove 455. And a limiting block is attached to the side of the sealing plate 456 away from the bottom of the communication groove 455. The limiting block is fixed on the inner wall of the communication groove 455 to limit the turning angle of the sealing plate 456, so that when the gas enters the cavity 445, it will not drive the sealing plate 456 to turn open after entering the communication groove 455 through the intercommunication hose 454. One side of the sealing plate 456 abuts against one end of the ejecting member 458. The vertical cross-section of the ejecting member 458 is Y-shaped. The other end of the ejecting member 458 is connected to the inner wall of the cylinder body 451. When the pull ring member 452 is pulled to drive the piston 459 to move away from the retractor plate 44, the ejecting member 458 pushes the two groups of sealing plates 456 to turn open. The sealing plate 456 and the inner wall of the communication groove 455 are connected through an elastic member 457 (such as a spring). When the ejecting member 458 is separated from the sealing plate 456, the elastic member 457 drives the sealing plate 456 to reset and close the notch;

[0085] When the retractor plate 44 needs to return to the initial retracted area or when the retracted area is too large and needs to be reduced, the user can pull the pull ring member 452 to make the piston 459 move away from the retractor plate 44. At this time, the sealing plate 456 will contact the ejecting member 458 and turn open into the communication groove 455 under the action of the ejecting member 458. Thus, the gas in the cavity 445 enters the communication groove 455 through the communication pipe 453 and the intercommunication hose 454, then flows to one side of the piston 459 and is discharged from the vent hole. When the gas in the cavity 445 is gradually discharged, the elastic connecting member 444 drives the movable plate 443 to make the second arc portion 442 gradually reset;

[0086] Moreover, this suction device can synchronously make the retractor plate 44 turn back to its original position and restore the initial retracted area. When the user needs the entire suction device to return to its initial state (as shown in the attachment Figure 1 ), just pull the pull ring member 452 to make the piston 459 move away from the retractor plate 44. When the piston 459 moves to the limit position, it further drives the operation plate 42 to move outward. In this way, the retractor plate 44 turns back to its original position and restores the initial retracted area;

[0087] Preferably, in actual situations, a first magnetic ring can be embedded in the inner wall of the cylinder body 451, and a second magnetic ring for adsorbing the first magnetic ring (not shown in the figure) can be embedded on the outer wall of the piston 459. Through the first magnetic ring and the second magnetic ring, when the piston 459 is driven to reset by the elastic member, it can be accurately reset to the initial position, and the ejecting member 458 will not push the sealing plate 456 open.

[0088] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aspirator with a retraction function, comprising a tube body (1), a handle (2) and a connector (3) connected in sequence to one end of the tube body (1), characterized in that: It also includes a retraction assembly (4) arranged on the tube body (1); Wherein, the retraction assembly (4) comprises: A mounting portion (41) is disposed on the tube body (1); An operating panel (42) is disposed on the mounting portion (41); A retraction plate (44) is provided on the mounting portion (41) and is located at one end of the operating plate (42); A self-locking transmission part (43) is transmission-connected between the operating plate (42) and the retraction plate (44); When the operating plate (42) is pressed, the self-locking transmission part (43) drives the retracting plate (44) to rotate around one end connected to the mounting part (41) to retract and block the brain tissue.

2. The aspirator according to claim 1, characterized in that: The self-locking transmission part (43) comprises: A mounting seat (431) is arranged on the mounting portion (41), an active rod (433) is rotatably arranged inside the mounting seat (431), a ratchet wheel (434) is sleeved on the outer wall of the active rod (433), sleeve rods (432) are movably sleeved on both ends of the active rod (433), and the sleeve rod (432) is fixedly connected to one end of the operating plate (42), an end of the sleeve rod (432) is rotatably connected to the inner wall of the mounting seat (431), and a connecting elastic member is provided at the connection between the sleeve rod (432) and the mounting seat (431); A ratchet (435) is rotatably disposed in the operating plate (42) and meshes with the ratchet wheel (434), and is used to drive the ratchet wheel (434) to rotate when the operating plate (42) is pressed. A connecting elastic member is also provided at the connection between the shaft of the ratchet (435) and the operating plate (42); The transmission rod (437) is rotatably disposed in the mounting seat (431) and is located between the active rod (433) and the retraction plate (44); one end of the retraction plate (44) is rotatably connected to the inner wall of the mounting seat (431) via a driven rod; the transmission rod (437), the driven rod and the active rod (433) are transmission-connected via a transmission gear set (436).

3. The aspirator according to claim 2, characterized in that: The mounting seat (431) is provided with a reset driving unit (46) for driving the retraction plate (44) to reset and rotate to fit the tube body (1) when the operating plate (42) moves away from the mounting seat (431).

4. The aspirator according to claim 3, characterized in that: The reset driving unit (46) comprises: Two groups of sliders (461) are respectively arranged at two ends of the active rod (433) and are respectively slidably arranged in the slide grooves provided on the inner walls of both sides of the mounting seat (431), and a spring member is arranged between the sliders (461) and the inner walls of the slide grooves; A second ratchet wheel (463) is sleeved on the end of the driven rod, and a connecting elastic member is provided at the connection between the driven rod and the mounting seat (431); One end of the elastic telescopic clamping plate (462) is in sliding contact with the teeth of the second ratchet wheel (463), and the other end is connected to the sliding block (461).

5. The aspirator according to claim 1, characterized in that: The retraction plate (44) has an arc-shaped vertical section, and comprises: The arc-shaped portion 1 (441) has grooves at both ends; Two groups of arc-shaped portions (442) are respectively arranged at two ends of the arc-shaped portion (441), and movable plates (443) are arranged at opposite ends of the two groups of arc-shaped portions (442). The two groups of movable plates (443) are respectively located in two groups of grooves, and the movable plates (443) and the grooves are connected by elastic connectors (444); The cavity (445) is opened in the arc-shaped portion 1 (441) and is connected to the groove. The cavity (445) is connected to the press-type air supply portion (45). The press-type air supply portion (45) is used to inject gas into the cavity (445) so that the movable plate (443) drives the arc-shaped portion 2 (442) to move relative to the arc-shaped portion 1 (441).

6. The aspirator according to claim 5, characterized in that: The press-type air supply unit (45) comprises: A cylinder (451) is embedded on the operating plate (42), and a piston (459) is movably arranged inside the cylinder. An elastic component is arranged between the piston (459) and the cylinder (451). One end of the piston (459) is connected to a pull ring (452), and the pull ring (452) penetrates the cylinder (451) and the operating plate (42) and extends to the outside of the operating plate (42). One end of the cylinder (451) is provided with a one-way air inlet end and a one-way air outlet end, and the other end of the cylinder (451) is provided with an air vent. The connecting pipe (453) has one end connected to the cavity (445) and the other end connected to the one-way air outlet.

7. The aspirator according to claim 6, characterized in that: The piston (459) is provided with a connecting groove (455) on one side facing the pull ring (452). The connecting groove (455) and the connecting pipe (453) are connected to each other through an intercommunication hose (454). Two sets of sealing plates (456) for closing the notch are hingedly connected to the inner wall of the notch of the connecting groove (455). One side of the sealing plate (456) is in contact with one end of the push member (458). The other end of the push member (458) is in contact with the cylinder (456). 51), the pushing member (458) pushes the two sets of sealing plates (456) to flip and open when the pull ring member (452) drives the piston (459) to move away from the pulling plate (44), and the sealing plates (456) and the inner walls of the connecting groove (455) are connected by elastic members (457), and the elastic members (457) drive the sealing plates (456) to return to the closed groove when the pushing member (458) is separated from the sealing plates (456).

8. The aspirator according to claim 1, characterized in that: The mounting portion (41) comprises: A fixing ring (411) is fixedly arranged on the outer wall of the tube body (1), and a plurality of groups of slots are formed in a circular array on the outer wall of one side of the fixing ring (411); Two groups of mounting rings (412) are symmetrically rotatably sleeved on the outside of the fixing ring (411), and opposite ends of the two groups of mounting rings (412) are mutually clamped, and a clamping rod (414) for inserting into a clamping slot is movably inserted through a bracket on one of the mounting rings (412); The elastic reset member (413) has one end connected to the clamping rod (414) and the other end connected to the bracket.

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