Neurosurgery aspirator

Abstract

The neurosurgical aspirator comprises a shell, an aspiration tube and a driving mechanism, a mounting cavity is formed in the shell, a first connecting tube is arranged in the mounting cavity, and one end of the first connecting tube can be communicated with negative pressure equipment; one end of the suction tube is provided with a suction elbow, and the other end of the suction tube penetrates through the mounting cavity and is rotatably inserted with the other end of the first connecting tube; the driving mechanism comprises a sliding plate, a driving assembly and a rotating assembly. During use, the shell is held, the sliding plate is driven by fingers to slide, the sliding plate slides, and then the driving assembly drives the rotating assembly to drive the suction tube to intermittently rotate by a preset angle, and the suction angle of the suction tube does not need to be wholly rotated when the suction angle of the suction tube is adjusted; therefore, the suction tube is prevented from generating large displacement and colliding with an operation position to cause secondary injury to a patient, the use safety of the device is improved, the suction tube intermittently rotates by a preset angle, the rotation angle of the suction tube is conveniently and accurately controlled, and the practicability of the device is improved.

Description

Technical Field

[0001] The present invention particularly relates to a neurosurgical aspirator. Background Art

[0002] Neurosurgical suction device, also known as Fukishima suction head and bendable suction head, is mainly used to suction fluids such as blood in a limited space to keep the surgical field clear. At the same time, it can also be used as a retractor, a protective device, and as a blunt dissection tool when removing tumors or brain parenchyma.

[0003] For example, a Chinese patent with application number 202220208322.5 discloses a suction device for neurosurgery, including a main body with an inner cavity, with connecting joints and suction tubes provided at both ends of the main body, respectively, and the connecting joints and the suction tubes are connected to the inner cavity of the main body, and the characteristic is that at least two air holes arranged at intervals are provided on the outer surface of the main body, and each air hole is connected to the inner cavity of the main body.

[0004] Most of the neurosurgical suction devices in the prior art have a simple structure, and the suction angle of the suction tube is adjusted by rotating the device as a whole by hand. However, when the device is rotated as a whole by hand, the suction tube is easily displaced to a large extent and collides with the surgical site, causing secondary injury to the patient, thereby reducing the safety of the device. In addition, the overall rotation of the device driven by hand is not convenient for accurately controlling the rotation angle of the suction tube, thereby reducing the practicality of the device. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention proposes a neurosurgery suction device to avoid large displacement of the suction tube and collision with the surgical site to cause secondary injury to the patient, improve the safety of the device, and facilitate accurate control of the rotation angle of the suction tube, thereby improving the practicality of the device.

[0006] A neurosurgical suction device, comprising:

[0007] The housing has an installation cavity formed therein, a first connecting pipe is disposed in the installation cavity, and one end of the first connecting pipe can be connected to the negative pressure device;

[0008] A suction tube, one end of which is provided with a suction elbow, the other end of which is inserted into the installation cavity and rotatably plugged with the other end of the first connecting tube;

[0009] The driving mechanism includes a slide plate, a driving assembly and a rotating assembly. An opening communicating with the outside is provided at the top of the installation cavity. The slide plate is horizontally slidably arranged in the opening. The driving assembly is arranged at the bottom of the slide plate. The rotating assembly is arranged on the suction tube. The movement of the slide plate can drive the rotating assembly through the driving assembly to drive the suction tube to intermittently rotate a preset angle.

[0010] The beneficial effects of the above-mentioned neurosurgery aspirator are:

[0011] When in use, the outer shell is held and the slide is driven to slide by fingers. The sliding of the slide can drive the rotating component to drive the suction tube to intermittently rotate at a preset angle through the driving component. When adjusting the suction angle of the suction tube, there is no need to rotate the device as a whole, thereby avoiding large displacement of the suction tube and collision with the surgical site to cause secondary injury to the patient, thereby improving the safety of the use of the device. The suction tube can be intermittently rotated at a preset angle, which is convenient for accurate control of the rotation angle of the suction tube, thereby improving the practicality of the device.

[0012] In one embodiment, the driving assembly includes a first rotating cylinder and a guide sleeve; the first rotating cylinder is rotatably arranged at the bottom end of the slide plate and is coaxial with the suction tube, the end of the first rotating cylinder close to the rotating assembly is evenly provided with multiple groups of first wedge teeth along its circumference, the guide sleeve is coaxially sleeved on the first rotating cylinder and fixedly connected to the mounting cavity, the circumferential side of the first rotating cylinder is evenly provided with multiple groups of guide rods along its circumference, and the inner wall of the guide sleeve is evenly provided with multiple groups of guide rails along its circumference for guiding the multiple groups of guide rods.

[0013] In one embodiment, the guide rail includes a straight groove section, an inclined groove section and a transition inclined groove; the straight groove section is opened on the inner wall of the guide sleeve parallel to the axis of the guide sleeve, and includes a first inlet and a first outlet relative to each other; the inclined groove section is opened on the inner wall of the guide sleeve at an angle, and includes a second outlet and a second inlet relative to each other; the transition inclined groove is opened on the inner wall of the guide sleeve and is connected to the first inlet and the second outlet; the transition inclined groove is used to drive the guide rod to correspond to the first inlet when the guide rod slides out of the second outlet; the first outlet and the second inlet extend out of the guide sleeve.

[0014] In one embodiment, the rotating assembly includes a second rotating drum; the second rotating drum is coaxially arranged on the suction tube and frictionally rotated in the mounting cavity; the end of the second rotating drum close to the first rotating drum is evenly arranged with multiple groups of second wedge teeth along its circumference, the multiple groups of second wedge teeth correspond to the multiple groups of first wedge teeth in a one-to-one offset manner, and the corresponding inclined surfaces of the first wedge teeth and the second wedge teeth are parallel; the end of the second rotating drum close to the first rotating drum is evenly opened with multiple groups of wedge grooves along its circumference, the inclined surfaces of the multiple groups of wedge grooves are respectively smoothly connected with the inclined surfaces of the multiple groups of second wedge teeth, and the wedge grooves are used to drive the guide rod to correspond to the second inlet when the guide rod slides out of the first outlet.

[0015] In one embodiment, the rotating assembly further includes a positioning assembly, wherein the positioning assembly connects the second rotating cylinder and the mounting cavity, and the positioning assembly is used to maintain the misalignment state of the first wedge tooth and the second wedge tooth.

[0016] In one embodiment, the limiting assembly includes an inner ratchet, a pawl and a first spring sheet; the inner ratchet is fixed in the mounting cavity and is coaxial with the second rotating cylinder; the pawl is rotatably arranged at the end of the second rotating cylinder away from the first rotating cylinder; the first spring sheet connects the second rotating cylinder and the pawl so that the pawl engages with the inner ratchet; the second rotating cylinder drives the suction tube to intermittently rotate at a preset angle so that the pawl can intermittently move along the inner ratchet.

[0017] In one embodiment, a negative pressure regulating component is further provided in the shell, and the negative pressure regulating component includes a second connecting pipe, a pressure relief chamber and a pressure relief groove. The second connecting pipe is provided on the shell, and one end of the second connecting pipe is connected to the negative pressure device. The shell is provided with the pressure relief chamber, and the pressure relief chamber includes a first end and a second end relative to each other. The first end is connected to the first connecting pipe, and the second end is connected to the second connecting pipe. The pressure relief groove connected to the outside is provided on the peripheral side of the pressure relief chamber, and the pressure relief groove can be gradually sealed or opened by sliding of fingers.

[0018] In one of the embodiments, a cross section of the pressure relief chamber gradually increases from the first end to the second end.

[0019] In one embodiment, the driving mechanism also includes an anti-accidental touch component, which includes a pressure plate and a second spring sheet, two groups of the second spring sheets are arranged at an angle relative to each other at the top of the slide plate, and the high ends of the two groups of the second spring sheets are arranged at an angle together with the pressure plate, and the inclination direction of the pressure plate is opposite to the inclination direction of the second spring sheet, and a limiting tooth is arranged at the bottom end of the pressure plate, and a plurality of groups of limiting grooves are provided on the top surface of the shell along the sliding direction of the slide plate, and the limiting teeth can be clamped in the limiting grooves, and a guide block is also provided on the shell, and the guide block is located between the slide plate and the high end of the pressure plate, and the bottom surface of the pressure plate can contact the top surface of the guide block to separate the limiting teeth from the limiting grooves.

[0020] In one of the embodiments, two groups of levers are arranged opposite to each other at the top of the slide board, and the lower ends of the two groups of second spring sheets are provided with lever grooves parallel to the second spring sheets. The two groups of levers are respectively slidably arranged in the two groups of lever grooves along the sliding direction of the slide board, and the bottom surface of the pressure plate contacts the top surface of the guide block so that the high end of the lever groove can abut against the lever. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of a neurosurgery aspirator provided by one embodiment of the present invention;

[0023] Figure 2 for Figure 1 A neurosurgical aspirator is shown in a cutaway right view;

[0024] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of a neurosurgery aspirator after the outer shell is cut;

[0025] Figure 4 for Figure 1 An exploded view of a drive assembly in a neurosurgical aspirator is shown;

[0026] Figure 5 for Figure 1 A right side view of a neurosurgery suction device in which a driving component and a rotating component are in a coordinated state;

[0027] Figure 6 for Figure 1 A right side view of a neurosurgery suction device in another matching state of a driving component and a rotating component;

[0028] Figure 7 for Figure 1 A neurosurgical aspirator is shown in a cutaway posterior view;

[0029] Figure 8 for Figure 1 An exploded view of an anti-touch component in a neurosurgical suction device is shown.

[0030] Reference numerals:

[0031] 10. housing; 101. mounting cavity; 102. first connecting pipe; 103. opening; 1031. guide groove; 104. limiting groove; 105. guide block;

[0032] 20. Suction tube; 201. Suction elbow;

[0033] 30, slide plate; 301, lever; 302, slider; 303, open ferrule;

[0034] 40. driving assembly; 401. first rotating drum; 4011. connecting ring; 402. guide sleeve; 403. first wedge tooth; 404. guide rod; 405. straight slot section; 4051. first inlet; 4052. first outlet; 406. chute section; 4061. second outlet; 4062. second inlet; 407. transition chute;

[0035] 50, rotating assembly; 501, second rotating drum; 502, second wedge tooth; 503, wedge groove; 504, inner ratchet; 505, ratchet pawl; 506, first spring sheet;

[0036] 60. Negative pressure regulating assembly; 601. Second connecting pipe; 602. Pressure relief chamber; 603. Pressure relief slot;

[0037] 70, pressing plate; 701, second spring sheet; 702, limiting tooth; 703, pulling groove; 704, anti-slip tooth. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0039] See also Figures 1 to 6 In one embodiment, a neurosurgical suction device includes a housing 10, a suction tube 20 and a driving mechanism.

[0040] Among them, the housing 10 is provided with an installation cavity 101, and a first connecting tube 102 is arranged in the installation cavity 101, and one end of the first connecting tube 102 can be connected to the negative pressure device. A suction elbow 201 is arranged at one end of the suction tube 20, and the other end is inserted into the installation cavity 101 and rotatably plugged with the other end of the first connecting tube 102. The driving mechanism includes a slide plate 30, a driving component 40 and a rotating component 50. An opening 103 connected to the outside is arranged at the top of the installation cavity 101. The slide plate 30 is slidably arranged in the opening 103 along the horizontal direction. The driving component 40 is arranged at the bottom of the slide plate 30, and the rotating component 50 is arranged on the suction tube 20. The movement of the slide plate 30 can drive the rotating component 50 through the driving component 40 to drive the suction tube 20 to intermittently rotate a preset angle.

[0041] Specifically, the driving assembly 40 includes a first rotating cylinder 401 and a guide sleeve 402; the first rotating cylinder 401 is rotatably arranged at the bottom end of the slide plate 30 and is coaxial with the suction tube 20, and a plurality of groups of first wedge teeth 403 are evenly arranged along its circumference at the end of the first rotating cylinder 401 close to the rotating assembly 50, and the guide sleeve 402 is coaxially sleeved on the first rotating cylinder 401 and fixedly connected to the mounting cavity 101, a plurality of groups of guide rods 404 are evenly arranged along its circumference on the circumferential side of the first rotating cylinder 401, and a plurality of groups of guide rails for guiding the plurality of guide rods 404 are evenly arranged along its circumference on the inner wall of the guide sleeve 402.

[0042] The guide track includes a straight groove section 405, an inclined groove section 406 and a transition inclined groove 407; the straight groove section 405 is opened on the inner wall of the guide sleeve 402 parallel to the axis of the guide sleeve 402, and includes a first inlet 4051 and a first outlet 4052 opposite to each other; the inclined groove section 406 is opened on the inner wall of the guide sleeve 402 at an angle, and includes a second outlet 4061 and a second inlet 4062 opposite to each other; the transition inclined groove 407 is opened on the inner wall of the guide sleeve 402, and is connected to the first inlet 4051 and the second outlet 4061; the transition inclined groove 407 is used to drive the guide rod 404 to correspond to the first inlet 4051 when the guide rod 404 slides out of the second outlet 4061; the first outlet 4052 and the second inlet 4062 extend out of the guide sleeve 402.

[0043] The rotating assembly 50 includes a second rotating cylinder 501; the second rotating cylinder 501 is coaxially arranged on the suction tube 20 and is frictionally rotated in the installation cavity 101. The end of the second rotating cylinder 501 close to the first rotating cylinder 401 is evenly arranged with multiple groups of second wedge teeth 502 along its circumference. The multiple groups of second wedge teeth 502 correspond to the multiple groups of first wedge teeth 403 in a one-to-one offset manner, and the corresponding inclined surfaces of the first wedge teeth 403 and the second wedge teeth 502 are parallel. The end of the second rotating cylinder 501 close to the first rotating cylinder 401 is evenly opened with multiple groups of wedge grooves 503 along its circumference. The inclined surfaces of the multiple groups of wedge grooves 503 are respectively smoothly connected with the inclined surfaces of the multiple groups of second wedge teeth 502. The wedge grooves 503 are used to drive the guide rod 404 to correspond to the second inlet 4062 when the guide rod 404 slides out from the first outlet 4052.

[0044] In the above embodiment, when it is necessary to adjust the suction angle of the suction tube 20, the housing 10 is held and the slide plate 30 is driven by fingers to drive the first rotating drum 401 to move close to the second rotating drum 501. The first rotating drum 401 moves close to the second rotating drum 501, so that the multiple groups of first wedge teeth 403 squeeze the multiple groups of second wedge teeth 502 to drive the second rotating drum 501 to drive the suction tube 20 to rotate. At the same time, the guide rod 404 slides from the first inlet 4051 into the straight groove section 405 and slides along the straight groove section 405 to limit the rotation of the first rotating drum 401. When the suction tube 20 rotates to a preset angle, the guide rod 404 slides out of the straight groove section 405 from the first outlet 4052 to cancel the restriction on the rotation of the first rotating drum 401, and the second rotating drum 401 moves close to the second rotating drum 501. The cylinder 501 remains stationary under the action of friction. At this time, the first rotating cylinder 401 continues to move, so that the multiple groups of first wedge teeth 403 can squeeze the multiple groups of wedge grooves 503 to rotate the first rotating cylinder 401, so that the guide rod 404 corresponds to the second entrance 4062. At this time, the driving slide 30 drives the first rotating cylinder 401 to move away from the second rotating cylinder 501, so that the guide rod 404 can slide from the second entrance 4062 into the inclined groove section 406 and move along the inclined groove section 406, and slide from the second exit 4061 into the transition inclined groove 407, and then slide along the transition inclined groove 407 to correspond to the first entrance 4051, so that the first rotating cylinder 401 continues to rotate so that the multiple groups of first wedge teeth 403 are misaligned with the multiple groups of second wedge teeth 502 again. The suction tube 20 can be driven to rotate to a preset angle by sliding the slide plate 30, and the suction angle of the suction tube 20 can be adjusted without rotating the entire device, thereby avoiding a large displacement of the suction tube 20 and collision with the surgical site to cause secondary injury to the patient, thereby improving the safety of the device. The suction tube 20 can be driven to rotate intermittently to a preset angle by reciprocatingly sliding the slide plate 30, that is, the rotation angle of the suction tube 20 can be accurately controlled by controlling the number of reciprocating slides of the slide plate 30, thereby improving the practicality of the device.

[0045] Specifically in the above embodiment, the outer surface of the suction tube 20 is sealed and fitted with the inner surface of the first connecting tube 102, so as to avoid air leakage at the connection point between the suction tube 20 and the first connecting tube 102.

[0046] Specifically in the above embodiment, guide grooves 1031 are provided on both sides of the opening 103, and sliders 302 are provided on both sides of the slide plate 30. Two groups of sliders 302 are slidably arranged in the two groups of guide grooves 1031 along the horizontal direction. The cooperation between the guide grooves 1031 and the sliders 302 can improve the sliding stability of the slide plate 30.

[0047] Specifically in the above embodiment, an open sleeve 303 is provided at the bottom end of the slide plate 30, and a connecting ring 4011 is coaxially provided on the circumferential side of the first rotating cylinder 401. The connecting ring 4011 is rotatably arranged in the open sleeve 303, and the rotational friction between the connecting ring 4011 and the open sleeve 303 is smaller than the rotational friction between the second rotating cylinder 501 and the mounting cavity 101.

[0048] See also Figure 2 and Figure 7 In one embodiment, the rotating assembly 50 further includes a positioning assembly, which connects the second rotating cylinder 501 and the mounting cavity 101 , and is used to maintain the misalignment state of the first wedge tooth 403 and the second wedge tooth 502 .

[0049] Specifically, the limiting assembly includes an inner ratchet 504, a pawl 505 and a first spring sheet 506; the inner ratchet 504 is fixed in the installation cavity 101 and is coaxial with the second rotating cylinder 501, the pawl 505 is rotatably arranged at the end of the second rotating cylinder 501 away from the first rotating cylinder 401, and the first spring sheet 506 connects the second rotating cylinder 501 and the pawl 505 so that the pawl 505 engages with the inner ratchet 504. The second rotating cylinder 501 drives the suction tube 20 to intermittently rotate at a preset angle, so that the pawl 505 can intermittently move along the inner ratchet 504.

[0050] In the above embodiment, when the suction tube 20 is affected by external force and rotates, the suction tube 20 drives the second rotating drum 501 to rotate, and the second rotating drum 501 drives the pawl 505 to move. The movement of the pawl 505 cooperates with the inner ratchet 504 to ensure that the suction tube 20 always rotates at a preset angle and cannot rotate in the opposite direction, thereby ensuring that the first wedge tooth 403 and the second wedge tooth 502 remain in a misaligned state.

[0051] See also Figure 2 and Figure 3 In one embodiment, a negative pressure regulating component 60 is further provided in the housing 10, and the negative pressure regulating component 60 includes a second connecting pipe 601, a pressure relief chamber 602 and a pressure relief groove 603. The second connecting pipe 601 is provided on the housing 10, and one end is connected to the negative pressure device. A pressure relief chamber 602 is provided in the housing 10, and the pressure relief chamber 602 includes a first end and a second end opposite to each other. The first end is connected to the first connecting pipe 102, and the second end is connected to the second connecting pipe 601. A pressure relief groove 603 connected to the outside is provided on the periphery of the pressure relief chamber 602, and the pressure relief groove 603 can be gradually sealed or opened by sliding a finger.

[0052] In the above embodiment, the amount of outside air entering the pressure relief chamber 602 can be gradually reduced by gradually sealing the pressure relief groove 603 by sliding the finger assembly, thereby increasing the negative pressure suction of the device. The amount of outside air entering the pressure relief chamber 602 can be increased by opening the pressure relief groove 603 by sliding the finger assembly, thereby reducing the negative pressure suction of the device. It is convenient and quick to adjust the size of the negative pressure suction of the device.

[0053] On the basis of the above embodiment, further, the cross section of the pressure relief chamber 602 from the first end to the second end gradually increases. When air passes through the pressure relief chamber 602 from the first connecting tube 102, as the cross section of the pressure relief chamber 602 gradually increases, the air speed will gradually decrease, and the pressure will gradually decrease, thereby playing a buffering role for the air, avoiding damage to the patient caused by excessive negative pressure, and improving the safety of the device.

[0054] See also Figures 1 to 3 and Figure 8 In one embodiment, the driving mechanism also includes an anti-accidental touch component, which includes a pressure plate 70 and a second spring sheet 701. Two groups of second spring sheets 701 are arranged at an angle relative to each other at the top of the slide plate 30. The high ends of the two groups of second spring sheets 701 are commonly arranged at an angle with a pressure plate 70. The inclination direction of the pressure plate 70 is opposite to that of the second spring sheet 701. A limiting tooth 702 is arranged at the lower end of the pressure plate 70. A plurality of groups of limiting grooves 104 are provided on the top surface of the housing 10 along the sliding direction of the slide plate 30. The limiting tooth 702 can be clamped in the limiting groove 104. A guide block 105 is also provided on the housing 10. The guide block 105 is located between the slide plate 30 and the high end of the pressure plate 70. The bottom surface of the pressure plate 70 can contact the top surface of the guide block 105 to separate the limiting tooth 702 from the limiting groove 104.

[0055] In the above embodiment, when it is necessary to drive the slide plate 30 to move, it is necessary to rotate the press plate 70 by pressing the high end of the press plate 70. When the press plate 70 rotates so that the bottom surface of the press plate 70 contacts the top surface of the guide block 105, the limiting tooth 702 separates from the limiting groove 104. At this time, by applying a horizontal force to the press plate 70, the press plate 70 can be moved to drive the slide plate 30 to move, thereby avoiding the movement of the slide plate 30 due to accidental touch, and the guide block 105 can limit the rotation of the press plate 70 and guide the movement, thereby avoiding excessive rotation of the press plate 70 to cause damage to the second spring sheet 701, thereby improving the stability of the movement of the press plate 70.

[0056] On the basis of the above embodiment, two groups of levers 301 are arranged opposite to each other at the top of the slide plate 30, and the lower ends of the two groups of second spring sheets 701 are provided with lever grooves 703 parallel to the second spring sheets 701. The two groups of levers 301 are respectively arranged in the two groups of lever grooves 703 for sliding along the sliding direction of the slide plate 30, and the bottom surface of the pressing plate 70 contacts the top surface of the guide block 105 so that the high end of the lever groove 703 abuts against the lever 301. The lever grooves 703 are provided to cooperate with the lever 301 to avoid the phenomenon that the slide plate 30 moves when the pressing plate 70 is pressed to rotate the pressing plate 70, that is, when the bottom surface of the pressing plate 70 contacts the top surface of the guide block 105 so that the high end of the lever groove 703 abuts against the lever 301, the pressing plate 70 moves to drive the slide plate 30 to move, thereby avoiding the phenomenon that the pressing plate 70 moves due to accidental contact.

[0057] Specifically in the above embodiment, the top surface of the pressing plate 70 is provided with a plurality of anti-slip teeth 704, which can increase the friction force in contact with the pressing plate 70 and avoid the phenomenon of slipping when pressing or moving the pressing plate 70.

[0058] The specific implementation of the above-mentioned neurosurgery aspirator is as follows:

[0059] When the suction angle of the suction tube 20 needs to be adjusted, the pressing plate 70 is rotated by holding the outer shell 10 and pressing the high end of the pressing plate 70 with a finger. When the pressing plate 70 is rotated so that the bottom surface of the pressing plate 70 contacts the top surface of the guide block 105, the limiting tooth 702 separates from the limiting groove 104, and the high end of the shifting groove 703 abuts against the shifting rod 301. Then, a horizontal force is applied to the pressing plate 70 to move the pressing plate 70 and drive the slide plate 30 to move.

[0060] When the slide plate 30 moves and drives the first rotating drum 401 to move closer to the second rotating drum 501, the first rotating drum 401 moves closer to the second rotating drum 501, so that the multiple groups of first wedge teeth 403 squeeze the multiple groups of second wedge teeth 502 to drive the second rotating drum 501 to drive the suction tube 20 to rotate. At the same time, the guide rod 404 slides from the first inlet 4051 into the straight groove section 405 and slides along the straight groove section 405 to limit the rotation of the first rotating drum 401. When the suction tube 20 rotates to a preset angle, the guide rod 404 slides out of the straight groove section 405 from the first outlet 4052 to cancel the restriction on the rotation of the first rotating drum 401, and the second rotating drum 501 remains motionless under the action of friction. At this time , the first rotating drum 401 continues to move, so that the multiple groups of first wedge teeth 403 can squeeze the multiple groups of wedge grooves 503 to rotate the first rotating drum 401, so that the guide rod 404 corresponds to the second entrance 4062. At this time, the driving slide 30 drives the first rotating drum 401 to move away from the second rotating drum 501, so that the guide rod 404 can slide from the second entrance 4062 into the inclined groove section 406 and move along the inclined groove section 406, and slide into the transition inclined groove 407 from the second exit 4061, and then slide along the transition inclined groove 407 to correspond to the first entrance 4051, so that the first rotating drum 401 continues to rotate so that the multiple groups of first wedge teeth 403 are misaligned with the multiple groups of second wedge teeth 502 again. The suction tube 20 can be driven to rotate to a preset angle by sliding the slide plate 30, and the suction angle of the suction tube 20 can be adjusted without rotating the entire device, thereby avoiding a large displacement of the suction tube 20 and collision with the surgical site to cause secondary injury to the patient, thereby improving the safety of the device. The suction tube 20 can be driven to rotate intermittently to a preset angle by reciprocatingly sliding the slide plate 30, that is, the rotation angle of the suction tube 20 can be accurately controlled by controlling the number of reciprocating slides of the slide plate 30, thereby improving the practicality of the device.

[0061] At the same time, during the suction process, the amount of outside air entering the pressure relief chamber 602 can be gradually reduced by gradually sealing the pressure relief groove 603 by sliding the finger assembly, thereby increasing the negative pressure suction of the device. The amount of outside air entering the pressure relief chamber 602 can be increased by opening the pressure relief groove 603 by sliding the finger assembly, thereby reducing the negative pressure suction of the device. It is convenient and quick to adjust the size of the negative pressure suction of the device.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A neurosurgery suction device, characterized in that: include: The housing (10) is provided with an installation cavity (101) therein, a first connecting tube (102) is provided in the installation cavity (101), and one end of the first connecting tube (102) can be connected to the negative pressure device; A suction tube (20), one end of which is provided with a suction elbow (201), the other end of which is inserted into the installation cavity (101) and rotatably plugged into the other end of the first connecting tube (102); The driving mechanism comprises a slide plate (30), a driving assembly (40) and a rotating assembly (50); the top of the installation cavity (101) is provided with an opening (103) communicating with the outside; the slide plate (30) is arranged in the opening (103) for sliding along a horizontal direction; the driving assembly (40) is arranged at the bottom of the slide plate (30); the rotating assembly (50) is arranged on the suction tube (20); the movement of the slide plate (30) can drive the rotating assembly (50) through the driving assembly (40) to drive the suction tube (20) to intermittently rotate at a preset angle.

2. A neurosurgery aspirator according to claim 1, characterized in that: The driving assembly (40) includes a first rotating cylinder (401) and a guide sleeve (402); the first rotating cylinder (401) is rotatably arranged at the bottom end of the slide plate (30) and is coaxial with the suction tube (20); a plurality of groups of first wedge teeth (403) are evenly arranged along its circumference at the end of the first rotating cylinder (401) close to the rotating assembly (50); the guide sleeve (402) is coaxially sleeved on the first rotating cylinder (401) and is fixedly connected to the mounting cavity (101); a plurality of groups of guide rods (404) are evenly arranged along its circumference on the circumferential side of the first rotating cylinder (401); and a plurality of groups of guide rails for guiding the plurality of groups of guide rods (404) are evenly arranged along its circumference on the inner wall of the guide sleeve (402).

3. A neurosurgery aspirator according to claim 2, characterized in that: The guide track comprises a straight groove section (405), an inclined groove section (406) and a transition inclined groove (407); the straight groove section (405) is arranged on the inner wall of the guide sleeve (402) parallel to the axis of the guide sleeve (402) and comprises a first inlet (4051) and a first outlet (4052) opposite to each other; the inclined groove section (406) is arranged on the inner wall of the guide sleeve (402) obliquely and comprises a second outlet (4061) and a second inlet (4062) opposite to each other; The transition inclined groove (407) is provided on the inner wall of the guide sleeve (402) and is connected with the first inlet (4051) and the second outlet (4061). The transition inclined groove (407) is used to drive the guide rod (404) to correspond to the first inlet (4051) when the guide rod (404) slides out of the second outlet (4061). The first outlet (4052) and the second inlet (4062) extend out of the guide sleeve (402).

4. A neurosurgery aspirator according to claim 3, characterized in that: The rotating assembly (50) includes a second rotating cylinder (501); the second rotating cylinder (501) is coaxially arranged on the suction tube (20) and frictionally rotated in the installation cavity (101); a plurality of groups of second wedge teeth (502) are evenly arranged along the circumference of the end of the second rotating cylinder (501) close to the first rotating cylinder (401); the plurality of groups of second wedge teeth (502) correspond to the plurality of groups of first wedge teeth (403) in a one-to-one offset manner, and the corresponding first wedge teeth (403) The second rotating cylinder (501) is parallel to the inclined surface of the second wedge tooth (502), and a plurality of groups of wedge grooves (503) are evenly arranged along its circumference at the end portion close to the first rotating cylinder (401). The inclined surfaces of the plurality of groups of wedge grooves (503) are respectively smoothly connected to the inclined surfaces of the plurality of groups of second wedge teeth (502). The wedge grooves (503) are used to drive the guide rod (404) to correspond to the second inlet (4062) when the guide rod (404) slides out of the first outlet (4052).

5. A neurosurgery aspirator according to claim 4, characterized in that: The rotating assembly (50) further comprises a positioning assembly, wherein the positioning assembly connects the second rotating cylinder (501) and the mounting cavity (101), and the positioning assembly is used to maintain the misalignment state of the first wedge tooth (403) and the second wedge tooth (502).

6. A neurosurgery aspirator according to claim 5, characterized in that: The limiting assembly includes an inner ratchet (504), a pawl (505) and a first spring sheet (506); the inner ratchet (504) is fixed in the mounting cavity (101) and is coaxial with the second rotating cylinder (501); the pawl (505) is rotatably arranged at the end of the second rotating cylinder (501) away from the first rotating cylinder (401); the first spring sheet (506) connects the second rotating cylinder (501) and the pawl (505) so that the pawl (505) engages with the inner ratchet (504); the second rotating cylinder (501) drives the suction tube (20) to intermittently rotate at a preset angle so that the pawl (505) can intermittently move along the inner ratchet (504).

7. A neurosurgery aspirator according to claim 1, characterized in that: A negative pressure regulating component (60) is also arranged in the shell (10), and the negative pressure regulating component (60) comprises a second connecting pipe (601), a pressure relief chamber (602) and a pressure relief groove (603). The second connecting pipe (601) is arranged on the shell (10), and one end of the second connecting pipe is connected to the negative pressure device. The shell (10) is provided with the pressure relief chamber (602), and the pressure relief chamber (602) comprises a first end and a second end opposite to each other. The first end is connected to the first connecting pipe (102), and the second end is connected to the second connecting pipe (601). The pressure relief groove (603) connected to the outside is arranged on the peripheral side of the pressure relief chamber (602), and the pressure relief groove (603) can be gradually sealed or gradually opened by sliding a finger.

8. A neurosurgery aspirator according to claim 7, characterized in that: The cross-section of the pressure relief chamber (602) gradually increases from the first end to the second end.

9. A neurosurgery aspirator according to claim 1, characterized in that: The driving mechanism further comprises an anti-accidental touch component, the anti-accidental touch component comprising a pressure plate (70) and a second spring sheet (701), two groups of the second spring sheets (701) are arranged at an angle relative to each other at the top end of the slide plate (30), the high ends of the two groups of the second spring sheets (701) are arranged at an angle together with the pressure plate (70), the inclination direction of the pressure plate (70) is opposite to the inclination direction of the second spring sheet (701), a limiting tooth (702) is arranged at the lower end of the pressure plate (70), and the housing (10) A plurality of groups of limit grooves (104) are provided on the top surface along the sliding direction of the slide plate (30), and the limit teeth (702) can be clamped in the limit grooves (104). A guide block (105) is also provided on the shell (10), and the guide block (105) is located between the slide plate (30) and the high end of the pressure plate (70). The bottom surface of the pressure plate (70) can contact the top surface of the guide block (105) to separate the limit teeth (702) from the limit grooves (104).

10. A neurosurgery aspirator according to claim 9, characterized in that: Two groups of levers (301) are arranged opposite to each other at the top of the slide plate (30), and the lower ends of the two groups of second spring sheets (701) are provided with lever grooves (703) parallel to the second spring sheets (701). The two groups of levers (301) are respectively slidably arranged in the two groups of lever grooves (703) along the sliding direction of the slide plate (30), and the bottom surface of the pressure plate (70) contacts the top surface of the guide block (105) so that the high end of the lever groove (703) abuts against the lever (301).

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