Suction device for treating otitis media of children

Abstract

The invention discloses a suction device for treating otitis media of children, and belongs to the technical field of treatment of otitis media of children. The suction device is provided with a fixing spring, a connecting sleeve, a suction catheter, a fixing needle sleeve and a clamping sleeve, and after a fixing clamping block on the inner wall of the clamping sleeve corresponds to an arc-shaped clamping groove in position, the fixing needle sleeve is inserted into the arc-shaped clamping groove; a connecting sleeve is loosened, a first moving block is jacked up to reset in a strip-shaped mounting groove under the springback effect of a fixed spring, the connecting sleeve is driven to move from the surface of the mounting sleeve to the surface of a clamping sleeve, and meanwhile, the connecting sleeve extrudes the clamping sleeve, so that the clamping sleeve is clamped on the surface of a fixed needle sleeve until a fixed clamping block is clamped into an annular clamping groove; meanwhile, a connecting sleeve is tightly attached to a limiting stop block, so that the inner wall of the connecting sleeve extrudes a second rubber clamping ring, the connecting sleeve is clamped and fixed to the surface of a clamping clamping sleeve, and it is guaranteed that when the suction needle head stretches into the auditory meatus of the child for suction treatment, the fixing needle sleeve cannot fall off from the surface of the suction catheter randomly due to struggling of the child.

Description

Technical Field

[0001] The present invention relates to the technical field of the treatment of otitis media in children, and particularly to a suction device for the treatment of otitis media in children. Background Art

[0002] Otitis media in children, as a common childhood disease, is mainly caused by bacterial or viral infections. At the same time, the eustachian tubes in children are relatively short, wide, and have a more horizontal orientation, which easily leads to the accumulation of secretions and infections. Adenoid hypertrophy, allergies, foreign bodies in the ear canal, excessive earwax accumulation, etc. may also cause otitis media. Middle ear effusion, tympanic membrane perforation, damage to the ossicles, etc. will all affect the conduction of sound, resulting in hearing loss. Hearing impairment will affect children's perception and imitation of sounds, leading to inaccurate pronunciation, making it difficult for children to understand the words of others and clearly express their own thoughts and feelings, thus affecting the development of language. At the same time, otitis media may cause other complications and endanger life in severe cases. When treating otitis media in children, it is necessary to first suction and clean the purulent secretions in the ear canal, and then drop medicine into the ear canal for treatment. When suctioning and cleaning the purulent secretions in the ear canal, a negative pressure suction device is often used. The negative pressure suction device can generate a strong negative pressure, effectively sucking out the pus in the wound or ear canal, ensuring that the pus is completely removed, preventing the accumulation of pus from causing an exacerbation of the infection. At the same time, the negative pressure suction device causes less damage to the surrounding tissues, reducing secondary damage caused by debridement operations.

[0003] When the existing suction device for the treatment of otitis media in children inserts the suction needle tube into the ear canal of a child for pus suction operation, the child will struggle due to the insertion of foreign objects into the ear canal. Since the suction needle tube is generally directly sleeved and fixed on the surface of the suction catheter, the suction needle tip is likely to fall off the surface of the suction catheter during the struggle, affecting the suction and cleaning of the pus in the child's ear canal by the negative pressure suction device. At the same time, a catheter is generally connected to the end of the negative pressure suction device, and the sucked pus is centrally processed through the long catheter. When moving the negative pressure suction device along with the child, the catheter is likely to limit the negative pressure suction device and affect the movement of the negative pressure suction device. Therefore, improvements are needed.

[0004] Based on this, the present invention designs a suction device for the treatment of otitis media in children to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a suction device for treating otitis media in children, so as to solve the problems raised in the above-mentioned background technology. When the existing suction device for treating otitis media in children inserts the suction needle tube into the ear canal of a child for pus suction operation, the child will struggle due to the insertion of a foreign object into the ear canal. Since the suction needle tube is generally directly sleeved and fixed on the surface of the suction catheter, the suction needle head is likely to fall off the surface of the suction catheter during the struggle, affecting the suction and cleaning of pus in the child's ear canal by the negative pressure suction device. At the same time, a catheter is generally connected to the end of the negative pressure suction device, and the sucked pus is centrally processed through the long catheter. When moving the negative pressure suction device with the child, the catheter is likely to limit the negative pressure suction device and affect the movement of the negative pressure suction device.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A suction device for treating otitis media in children includes a main body of a negative pressure suction device. One end of the main body of the negative pressure suction device is communicated with a discharge catheter. A clamping and fixing mechanism is fixedly installed at one end of the main body of the negative pressure suction device on the surface of the discharge catheter. A pus collection cylinder is arranged on one side of the clamping and fixing mechanism. A connecting catheter is fixedly installed at the end of the main body of the negative pressure suction device away from the discharge catheter. A connecting and fixing mechanism is fixedly connected to the surface of the connecting catheter. One end of the connecting catheter is communicated with a suction catheter. A clamping sleeve is fixedly installed at one end of the connecting catheter on the surface of the suction catheter. A plastic needle tube is arranged on the surface of the suction catheter inside the clamping sleeve. Handheld sleeves are arranged on the surfaces of the main body of the negative pressure suction device and the pus collection cylinder.

[0008] As a further solution of the present invention, the connecting and fixing mechanism includes an installation sleeve. Six strip-shaped installation grooves are equiangularly arranged on the surface of the installation sleeve. Installation sliding rods are fixedly installed inside the strip-shaped installation grooves. First moving blocks are slidably installed on the surfaces of the installation sliding rods. The surfaces of the six first moving blocks are fixedly installed with a connecting sleeve, and the connecting sleeve is slidably connected to the surface of the installation sleeve. Fixed springs are arranged on the surfaces of the installation sliding rods on one side of the first moving blocks.

[0009] As a further solution of the present invention, the surface of the clamping sleeve corresponds to the inner wall of the connecting sleeve. A second rubber clamping ring is fixedly installed on the surface of one end of the clamping sleeve. Six clamping gaps are equiangularly arranged on the surface of the clamping sleeve away from the second rubber clamping ring. Fixed clamping blocks are fixedly installed on the inner wall of the clamping sleeve between adjacent two clamping gaps. Six limit blocks are fixedly installed at one end of the clamping sleeve.

[0010] As a further solution of the present invention, the plastic needle tube includes a fixed needle sleeve. Four limit card slots are equiangularly arranged on the inner wall of the fixed needle sleeve. An annular card slot is arranged on the surface of the fixed needle sleeve. The position of the annular card slot corresponds to that of the fixed clamping block. A suction needle head is communicated with one side of the fixed needle sleeve.

[0011] As a further solution of the present invention, four first limiting strips are fixedly installed on the surface of the suction catheter at equal angles. The positions of the first limiting strips correspond to those of the limiting slots and they have the same shape. Six second limiting strips are fixedly installed on the surface of the main body of the negative pressure aspirator at equal angles near the discharge catheter. A first rubber clamping ring is fixedly installed on the surface of the main body of the negative pressure aspirator on one side of the second limiting strips.

[0012] As a further solution of the present invention, the clamping and fixing mechanism includes an installation ring. Four positioning slots are arranged on the surface of the installation ring at equal angles. Arc-shaped installation grooves are respectively arranged on the surface of the installation ring on one side of the four positioning slots. An arc-shaped sliding rod is fixedly installed on the inner wall of the arc-shaped installation groove. A second moving block is slidably installed on the surface of one end of the arc-shaped sliding rod.

[0013] As a further solution of the present invention, a return spring is arranged on the surface of the arc-shaped sliding rod on one side of the second moving block. Four rotating clamping rings are fixedly installed on the surfaces of the second moving blocks, and the rotating clamping rings are movably connected with the surface of the installation ring. Four L-shaped fixing slots are arranged on the inner part of the rotating clamping ring at equal angles, and the positions of the L-shaped fixing slots correspond to those of the positioning slots.

[0014] As a further solution of the present invention, four positioning plugs are fixedly installed on one side of the pus collection cylinder at equal angles, and the positions of the positioning plugs correspond to those of the positioning slots and the L-shaped fixing slots. A pressure stabilizing ventilation hole is arranged on the side of the pus collection cylinder away from the positioning plugs. An elastic plug is arranged inside the pressure stabilizing ventilation hole.

[0015] As a further solution of the present invention, six limiting grooves are arranged on the inner wall of one end of the hand-held sleeve at equal angles, and the positions of the limiting grooves correspond to those of the second limiting strips. An anti-slip sleeve is fixedly installed on the surface of the hand-held sleeve.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The present invention is provided with a fixing spring, a connecting sleeve, a suction catheter, a fixing needle sleeve and a clamping sleeve. By pushing the connecting sleeve to move from the surface of the clamping sleeve to the surface of the mounting sleeve, the connecting sleeve drives the first moving block to slide inside the strip-shaped mounting groove, squeezing the fixing spring to deform on the corresponding mounting slide rod. When the connecting sleeve is away from the surface of the clamping sleeve, the clamping sleeve gradually opens, making the space between the clamping sleeves larger. Then, the fixing needle sleeve is inserted into the clamping sleeve and correspondingly sleeved on the surface of the suction catheter. After the fixing block on the inner wall of the clamping sleeve corresponds to the position of the arc-shaped card slot, the connecting sleeve is released. Under the elastic return of the fixing spring, the first moving block is lifted to reset inside the strip-shaped mounting groove, driving the connecting sleeve to move from the surface of the mounting sleeve to the surface of the clamping sleeve. At the same time, the connecting sleeve squeezes the clamping sleeve, making the clamping sleeve clamp on the surface of the fixing needle sleeve until the fixing block is stuck into the annular card slot. At the same time, the connecting sleeve is in close contact with the limit stop block, so that the inner wall of the connecting sleeve squeezes the second rubber clamping ring, clamping and fixing the connecting sleeve on the surface of the clamping sleeve, ensuring that when the suction needle is inserted into the child's ear canal for suction treatment, the fixing needle sleeve will not fall off the surface of the suction catheter randomly due to the child's struggle.

[0018] 2. The present invention is provided with a mounting ring, a reset spring, a rotating clamping ring, a pus collection cylinder and a positioning insert block. By screwing the rotating clamping ring to rotate on the surface of the mounting ring until the notch of the L-shaped fixing card slot corresponds to the position of the positioning slot, the rotating clamping ring drives the second moving block to rotate inside the arc-shaped mounting groove, squeezing the reset spring to deform on the arc-shaped slide rod, lifting the pus collection cylinder and correspondingly inserting the positioning insert block on one side of the pus collection cylinder into the positioning slot until the pus collection cylinder is in close contact with the mounting ring, and at the same time, the positioning jack is completely inserted into the positioning slot. After the rotating clamping ring is released, under the elastic return of the reset spring, the second moving block is lifted to reset on the arc-shaped slide rod, controlling the rotating clamping ring to rotate on the surface of the mounting ring to misalign the L-shaped fixing card slot and the positioning slot, thereby clamping and fixing the positioning insert block in the corresponding positioning slot and clamping and fixing the pus collection cylinder at one end of the negative pressure suction device main body, facilitating the disassembly, cleaning or connection and fixing of the pus collection cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is a combined cross-sectional structure schematic diagram of the present invention;

[0021] Figure 2 It is a structure schematic diagram of the negative pressure suction device main body and the connecting catheter of the present invention;

[0022] Figure 3 Schematic cross-sectional structure diagram of the installation sleeve, fixing spring and connection sleeve of the present invention;

[0023] Figure 4 Schematic structure diagram of the clamping collet, second rubber snap ring and limit stop of the present invention;

[0024] Figure 5 Schematic structure diagram of the fixed needle sleeve and aspiration needle of the present invention;

[0025] Figure 6 Schematic cross-sectional structure diagram of the installation ring and rotating snap ring of the present invention;

[0026] Figure 7 For the present invention Figure 6 Enlarged structure diagram at position A in;

[0027] Figure 8 Schematic structure diagram of the pus collection cylinder, positioning plug and elastic plug of the present invention;

[0028] Figure 9 Schematic cross-sectional structure diagram of the hand-held sleeve and anti-slip sleeve of the present invention.

[0029] In the drawings, the list of components represented by each reference numeral is as follows:

[0030] 1. Negative pressure aspirator main body; 101. Discharge conduit; 102. Connection conduit; 103. Suction conduit; 104. First limit card strip; 105. Second limit card strip; 106. First rubber snap ring; 2. Connection and fixing mechanism; 201. Installation sleeve; 202. Strip-shaped installation groove; 203. Installation slide bar; 204. First moving block; 205. Fixing spring; 206. Connection sleeve; 3. Clamping collet; 301. Second rubber snap ring; 302. Clamping gap; 303. Fixed block; 304. Limit stop; 4. Plastic syringe; 401. Fixed needle sleeve; 402. Limit card slot; 403. Annular card slot; 404. Aspiration needle; 5. Clamping and fixing mechanism; 501. Installation ring; 502. Positioning slot; 503. Arc-shaped installation groove; 504. Arc-shaped slide bar; 505. Second moving block; 506. Return spring; 507. Rotating snap ring; 508. L-shaped fixed card slot; 6. Pus collection cylinder; 601. Positioning plug; 602. Pressure stabilizing ventilation hole; 603. Elastic plug; 7. Hand-held sleeve; 701. Limit groove; 702. Anti-slip sleeve. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0032] Please refer to Figures 1-3 , the present invention provides a technical solution: a suction device for treating otitis media in children, including a negative pressure suction device main body 1. One end of the negative pressure suction device main body 1 is communicated with a discharge catheter 101, and the other end is fixedly installed with a connecting catheter 102. A connecting and fixing mechanism 2 is fixedly connected to the surface of the connecting catheter 102. The connecting and fixing mechanism 2 includes an installation sleeve 201. Six strip-shaped installation grooves 202 are equiangularly arranged on the surface of the installation sleeve 201. An installation slide rod 203 is fixedly installed inside the strip-shaped installation groove 202. A first moving block 204 is slidably installed through the surface of the installation slide rod 203. A fixing spring 205 is arranged on the surface of the installation slide rod 203 on one side of the first moving block 204. Six first moving blocks 204 are fixedly installed on the surface of the connecting sleeve 206, and the connecting sleeve 206 is slidably connected to the surface of the installation sleeve 201.

[0033] As Figure 4 shown, one end of the connecting catheter 102 is communicated with a suction catheter 103. A clamping collar 3 is fixedly installed at one end of the connecting catheter 102 on the surface of the suction catheter 103. The surface of the clamping collar 3 corresponds to the inner wall of the connecting sleeve 206. A second rubber clamping ring 301 is fixedly installed on the surface of one end of the clamping collar 3. Six clamping gaps 302 are equiangularly arranged on the surface of the clamping collar 3 away from the second rubber clamping ring 301. A fixing block 303 is fixedly installed inside the clamping collar 3 between two adjacent clamping gaps 302; Six limit blocks 304 are fixedly installed at the other end of the clamping collar 3.

[0034] As Figure 5 shown, a plastic syringe 4 is arranged on the surface of the suction catheter 103 inside the clamping collar 3. The plastic syringe 4 includes a fixed needle sleeve 401, and a suction needle 404 is communicated with one side of the fixed needle sleeve 401; An annular clamping groove 403 is arranged on the surface of the fixed needle sleeve 401, and the position of the annular clamping groove 403 corresponds to that of the fixed block 303; Four limit clamping grooves 402 are equiangularly arranged on the inner wall of the fixed needle sleeve 401. Four first limit clamping strips 104 are fixedly installed equiangularly on the surface of the suction catheter 103. The positions of the first limit clamping strips 104 correspond to those of the limit clamping grooves 402 and have the same shape.

[0035] Push the connecting sleeve 206 to slide on the surfaces of the clamping ferrule 3 and the mounting sleeve 201 until the connecting sleeve 206 is moved from the surface of the clamping ferrule 3 to the surface of the mounting sleeve 201, so that the connecting sleeve 206 releases the clamping ferrule 3, thereby facilitating the loosening or clamping of the plastic syringe needle 4 clamped inside the clamping ferrule 3.

[0036] At the same time, during the movement of the connecting sleeve 206, the first moving block 204 is driven to slide on the surface of the mounting slide bar 203 inside the corresponding strip-shaped mounting groove 202, so that the first moving block 204 pushes the fixing spring 205 to be squeezed and deformed; after the plastic syringe needle 4 is inserted into the clamping ferrule 3, release the connecting sleeve 206, and under the action of the elastic return of the fixing spring 205, the connecting sleeve 206 is jacked up to move from the surface of the mounting sleeve 201 to the surface of the clamping ferrule 3, so that the connecting sleeve 206 squeezes the clamping ferrule 3, and the plastic syringe needle 4 is clamped and fixed inside the clamping ferrule 3.

[0037] When the connecting sleeve 206 is completely attached to the surface of the clamping ferrule 3, the inner wall of the connecting sleeve 206 squeezes the second rubber snap ring 301 to deform, so that the second rubber snap ring 301 rebounds to clamp and fix the connecting sleeve 206, thereby clamping and fixing the connecting sleeve 206 on the surface of the clamping ferrule 3. At the same time, when the connecting sleeve 206 is attached to the surface of the clamping ferrule 3, the clamping gap 302 gradually becomes smaller, so that the clamping ferrule 3 clamps and fixes the plastic syringe needle 4. When the connecting sleeve 206 covers the surface of the clamping ferrule 3 and is in contact with the limit stop 304, it is ensured that the connecting sleeve 206 will not break away from the clamping ferrule 3.

[0038] Insert the fixed needle sleeve 401 into the clamping ferrule 3, so that the fixed needle sleeve 401 is correspondingly sleeved on the surface of the suction catheter 103, and ensure that the limit card slot 402 on the inner wall of the fixed needle sleeve 401 is stuck on the surface of the corresponding first limit card strip 104. When the suction needle 404 is inserted into the child's ear canal and the negative pressure aspirator main body 1 is rotated to aspirate pus, the suction needle 404 rotates synchronously with the negative pressure aspirator main body 1 to avoid relative sliding of the suction needle 404 on the surface of the suction catheter 103. At the same time, when the clamping ferrule 3 clamps on the surface of the fixed needle sleeve 401, the fixed block 303 on the inner wall of the clamping ferrule 3 is inserted into the annular card slot 403 on the surface of the fixed needle sleeve 401, thereby clamping and fixing the fixed needle sleeve 401 to ensure that the fixed needle sleeve 401 will not fall off from the inside of the clamping ferrule 3.

[0039] Such as Figures 6-7As shown, at one end of the negative pressure aspirator main body 1 located on the surface of the discharge conduit 101, a clamping and fixing mechanism 5 is fixedly installed. The clamping and fixing mechanism 5 includes a mounting ring 501. Four positioning slots 502 are equiangularly arranged on the surface of the mounting ring 501. Arc-shaped mounting grooves 503 are respectively arranged on one side of the four positioning slots 502 on the surface of the mounting ring 501. An arc-shaped sliding rod 504 is fixedly installed on the inner wall of the arc-shaped mounting groove 503. A second moving block 505 is slidably installed through the surface of one end of the arc-shaped sliding rod 504. A return spring 506 is arranged on the surface of the arc-shaped sliding rod 504 on the side of the second moving block 505. A rotating clamping ring 507 is fixedly installed on the surfaces of the four second moving blocks 505, and the rotating clamping ring 507 is movably connected to the surface of the mounting ring 501. Four L-shaped fixing slots 508 are equiangularly arranged inside the rotating clamping ring 507, and the positions of the L-shaped fixing slots 508 correspond to those of the positioning slots 502.

[0040] As Figure 8 As shown, a pus collection cylinder 6 is arranged on one side of the clamping and fixing mechanism 5. Four positioning blocks 601 are fixedly installed equiangularly on one side of the pus collection cylinder 6, and the positions of the positioning blocks 601 correspond to those of the positioning slots 502 and the L-shaped fixing slots 508. A pressure stabilizing ventilation hole 602 is arranged on the side of the pus collection cylinder 6 away from the positioning blocks 601. An elastic plug 603 is arranged inside the pressure stabilizing ventilation hole 602.

[0041] Twist the rotating clamping ring 507 to rotate on the surface of the mounting ring 501, drive the second moving block 505 to slide on the corresponding arc-shaped sliding rod 504, and squeeze the return spring 506 to deform until the notch of the L-shaped fixing slot 508 on the inner wall of the rotating clamping ring 507 corresponds to the positioning slot 502, so as to facilitate attaching the pus collection cylinder 6 tightly to the mounting ring 501. After the pus collection cylinder 6 is clamped at a suitable position on the surface of the mounting ring 501, release the rotating clamping ring 507. Under the elastic return of the return spring 506, the second moving block 505 is pushed up to slide on the corresponding arc-shaped sliding rod 504, so that the rotating clamping ring 507 rotates on the surface of the mounting ring 501, thereby clamping and fixing the pus collection cylinder 6, facilitating the connection and fixing or disassembly of the pus collection cylinder 6 and the mounting ring 501.

[0042] Insert the positioning plug 601 at one end of the pus collection cylinder 6 into the corresponding positioning slot 502, so that the rotating clamping ring 507 clamps and fixes the positioning plug 601, and the positioning plug 601 is clamped and fixed inside the positioning slot 502, fixing the pus collection cylinder 6 on the surface of the discharge conduit 101. Take out the elastic plug 603 inside the pressure stabilizing vent hole 602, control the main body 1 of the negative pressure aspirator to start working, aspirate the pus in the child's ear canal through the aspiration needle 404, and discharge the aspirated pus from the discharge conduit 101 into the pus collection cylinder 6. At the same time, the air inside the pus collection cylinder 6 is discharged from the pressure stabilizing vent hole 602, making the air pressure inside the pus collection cylinder 6 relatively stable with the external air pressure, and preventing the air pressure inside the pus collection cylinder 6 from increasing due to the continuous discharge of pus from the discharge conduit 101 into the pus collection cylinder 6, which squeezes the air inside the pus collection cylinder 6.

[0043] As Figure 9 shown, a hand-held sleeve 7 is provided on the surfaces of the main body 1 of the negative pressure aspirator and the pus collection cylinder 6; six limiting grooves 701 are equiangularly provided at one end of the inner wall of the hand-held sleeve 7, and the positions of the limiting grooves 701 correspond to those of the second limiting strip 105. An anti-slip sleeve 702 is fixedly installed on the surface of the hand-held sleeve 7; six second limiting strips 105 are fixedly installed equiangularly on the surface of the main body 1 of the negative pressure aspirator near the discharge conduit 101, and a first rubber clamping ring 106 is fixedly installed on the surface of the main body 1 of the negative pressure aspirator on one side of the second limiting strip 105.

[0044] After the pus collection cylinder 6 and the main body 1 of the negative pressure aspirator are combined and connected, put the hand-held sleeve 7 on the surfaces of the pus collection cylinder 6 and the main body 1 of the negative pressure aspirator, so that the limiting grooves 701 on the inner wall of the hand-held sleeve 7 are stuck on the surfaces of the corresponding second limiting strips 105. At the same time, the hand-held sleeve 7 covers the surface of the first rubber clamping ring 106, squeezing the first rubber clamping ring 106 to deform, and the first rubber clamping ring 106 rebounds to clamp and fix the hand-held sleeve 7, facilitating medical staff to hold the anti-slip sleeve 702 and move the aspiration needle 404 at one end of the main body 1 of the negative pressure aspirator to align with a suitable position for pus aspiration.

[0045] The working principle of the present invention:

[0046] Control the rotation of the rotating snap ring 507 on the surface of the mounting ring 501, so that the rotating snap ring 507 drives the second moving block 505 to slide on the surface of the arc-shaped sliding rod 504, pushing the extrusion return spring 506 to deform until the notch of the L-shaped fixed card slot 508 corresponds to the position of the positioning slot 502. Suspend the clean pus collection cylinder 6 on one side of the mounting ring 501, so that the positioning plug 601 at one end of the pus collection cylinder 6 corresponds to the position of the positioning slot 502. After completely inserting the positioning plug 601 into the notch of the L-shaped fixed card slot 508 and the positioning slot 502, release the rotating snap ring 507. Under the elastic force of the return spring 506, the second moving block 505 is lifted to slide and reset on the surface of the arc-shaped sliding rod 504. At the same time, when the second moving block 505 slides on the surface of the arc-shaped sliding rod 504, it drives the rotating snap ring 507 to rotate on the surface of the mounting ring 501, causing a dislocation between the L-shaped fixed card slot 508 and the positioning slot 502, thereby clamping and fixing the positioning plug 601 inside the positioning slot 502. Then, put the hand-held sleeve 7 on the surfaces of the pus collection cylinder 6 and the negative pressure aspirator main body 1, so that the limiting groove 701 covers the corresponding second limiting card strip 105 on the surface of the negative pressure aspirator main body 1, ensuring that the hand-held sleeve 7 squeezes the first rubber snap ring 106 to rebound, and clamping and fixing the hand-held sleeve 7 on the surfaces of the pus collection cylinder 6 and the negative pressure aspirator main body 1.

[0047] Push the connecting sleeve 206 to move away from the clamping sleeve 3 to the surface of the mounting sleeve 201, so that the connecting sleeve 206 drives the first moving block 204 to slide on the surface of the mounting slide bar 203, squeezing the fixed spring 205 to deform. At the same time, when the connecting sleeve 206 separates from the surface of the clamping sleeve 3, the surface of the clamping sleeve 3 loses the pressure of the inner wall of the connecting sleeve 206 and gradually opens. Put the fixed needle sleeve 401 into the clamping sleeve 3, so that the fixed needle sleeve 401 is sleeved on the surface of the suction catheter 103, ensuring that the limiting card slot 402 on the inner wall of the fixed needle sleeve 401 correspondingly covers the first limiting card strip 104 on the surface of the suction catheter 103. Until the annular card slot 403 on the surface of the fixed needle sleeve 401 corresponds to the position of the fixed card block 303 on the inner wall of the clamping sleeve 3, release the connecting sleeve 206. Under the elastic force of the fixed spring 205, the first moving block 204 is lifted to move and reset on the surface of the mounting slide bar 203, driving the connecting sleeve 206 to slide from the surface of the mounting sleeve 201 to the surface of the clamping sleeve 3, applying pressure to the surface of the clamping sleeve 3, so that the clamping sleeve 3 gradually contracts and squeezes the clamping gap 302 to become smaller until the clamping sleeve 3 clamps on the surface of the fixed needle sleeve 401, making the fixed card block 303 snap into the annular card slot 403 on the surface of the fixed needle sleeve 401, and clamping and fixing the fixed needle sleeve 401 inside the clamping sleeve 3.

[0048] When the connecting sleeve 206 is moved to the surface of the clamping ferrule 3, the inner wall of the connecting sleeve 206 squeezes the second rubber retaining ring 301 to deform. Under the resilience of the second rubber retaining ring 301, the connecting sleeve 206 is clamped and fixed on the surface of the clamping ferrule 3, ensuring that the connecting sleeve 206 is stuck on the surface of the clamping ferrule 3 and will not slide randomly, avoiding the aspiration needle 404 falling off the surface of the suction catheter 103 when the aspiration needle 404 is inserted into the child's ear canal and the child is stimulated and struggles.

[0049] Take out the elastic plug 603 from the inside of the pressure-stabilizing ventilation hole 602, then start the negative pressure aspirator main body 1 to generate suction in the suction catheter 103, insert the aspiration needle 404 into the child's ear canal, aim at the pus in the ear canal, and suck the pus in the ear canal from the aspiration needle 404 into the negative pressure aspirator main body 1 under the suction of the suction catheter 103. Then discharge it from the discharge catheter 101 to the pus collection cylinder 6, control the negative pressure aspirator main body 1 to drive the aspiration needle 404 to rotate, so as to aspirate the pus in different positions of the child's ear canal; until a certain amount of pus is collected in the pus collection cylinder 6, withdraw the aspiration needle 404 from the ear canal, and move the elastic plug 603 to block the pressure-stabilizing ventilation hole 602.

[0050] At the same time, twist the rotating ferrule 507 to rotate on the surface of the mounting ring 501, so that the notch of the L-shaped fixed card slot 508 corresponds to the position of the positioning slot 502, thereby pulling out the positioning block 601 from the inside of the positioning slot 502, moving the pus collection cylinder 6 away from the mounting ring 501, facilitating the pouring and cleaning of the pus collection cylinder 6, and avoiding the leakage of pus caused by continuous aspiration after the pus collection cylinder 6 is full of pus. At the same time, push the connecting sleeve 206 away from the clamping ferrule 3, so that the clamping ferrule 3 opens on the surface of the fixed needle sleeve 401 until the fixed block 303 disengages from the annular card slot 403, and pull out the fixed needle sleeve 401 from the inside of the clamping ferrule 3 for replacement, avoiding cross-infection when the aspiration needle 404 is reused to aspirate the pus in the ear canals of different patients.

Claims

1. An aspiration device for treating otitis media in children, comprising a negative pressure aspirator main body (1), characterized in that: One end of the main body (1) of the negative pressure aspirator is communicated with a discharge conduit (101). One end of the main body (1) of the negative pressure aspirator located on the surface of the discharge conduit (101) is fixedly installed with a clamping and fixing mechanism (5). A pus collection cylinder (6) is arranged on one side of the clamping and fixing mechanism (5). One end of the main body (1) of the negative pressure aspirator away from the discharge conduit (101) is fixedly installed with a connecting conduit (102). A connecting and fixing mechanism (2) is fixedly connected to the surface of the connecting conduit (102). One end of the connecting conduit (102) is communicated with a suction conduit (103). A clamping sleeve (3) is fixedly installed on one end of the connecting conduit (102) located on the surface of the suction conduit (103). A plastic syringe (4) is arranged on the surface of the suction conduit (103) inside the clamping sleeve (3). A hand-held sleeve (7) is arranged on the surfaces of the main body (1) of the negative pressure aspirator and the pus collection cylinder (6).

2. The aspiration device for treating otitis media in children according to claim 1, wherein: The connecting and fixing mechanism (2) includes an installation sleeve (201). Six strip-shaped installation grooves (202) are arranged on the surface of the installation sleeve (201) at equal angles. An installation slide rod (203) is fixedly installed inside the strip-shaped installation groove (202). A first moving block (204) is slidably installed on the surface of the installation slide rod (203). A connecting sleeve (206) is fixedly installed on the surfaces of the six first moving blocks (204), and the connecting sleeve (206) is slidably connected to the surface of the installation sleeve (201). A fixing spring (205) is arranged on the surface of the installation slide rod (203) on one side of the first moving block (204).

3. The aspiration device for treating otitis media in children according to claim 2, characterized in that: The surface of the clamping sleeve (3) corresponds to the inner wall of the connecting sleeve (206). A second rubber clamping ring (301) is fixedly installed on the surface of one end of the clamping sleeve (3). Six clamping gaps (302) are arranged on the surface of the clamping sleeve (3) away from the second rubber clamping ring (301) at equal angles. A fixing clamping block (303) is fixedly installed on the inner wall of the clamping sleeve (3) between two adjacent clamping gaps (302). Six limit stop blocks (304) are fixedly installed at one end of the clamping sleeve (3).

4. The aspiration device for treating otitis media in children according to claim 3, wherein: The plastic syringe (4) includes a fixed needle sleeve (401). Four limit clamping grooves (402) are arranged on the inner wall of the fixed needle sleeve (401) at equal angles. An annular clamping groove (403) is arranged on the surface of the fixed needle sleeve (401). The position of the annular clamping groove (403) corresponds to that of the fixed clamping block (303). A suction needle head (404) is communicated with one side of the fixed needle sleeve (401).

5. The aspiration device for treating otitis media in children according to claim 4, characterized in that: Four first limit clamping strips (104) are fixedly installed on the surface of the suction conduit (103) at equal angles. The position of the first limit clamping strip (104) corresponds to that of the limit clamping groove (402) and they have the same shape. Six second limit clamping strips (105) are fixedly installed on the surface of the main body (1) of the negative pressure aspirator near the discharge conduit (101) at equal angles. A first rubber clamping ring (106) is fixedly installed on the surface of the main body (1) of the negative pressure aspirator on one side of the second limit clamping strip (105).

6. The aspiration device for treating otitis media in children according to claim 1, wherein: The clamping and fixing mechanism (5) includes an installation ring (501). Four positioning slots (502) are equiangularly arranged on the surface of the installation ring (501). Arc-shaped installation grooves (503) are respectively arranged on one side of the four positioning slots (502) on the surface of the installation ring (501). An arc-shaped sliding rod (504) is fixedly installed on the inner wall of the arc-shaped installation groove (503). A second moving block (505) is slidably installed on the surface of one end of the arc-shaped sliding rod (504).

7. The aspiration device for treating otitis media in children according to claim 6, characterized in that: A return spring (506) is arranged on the surface of the arc-shaped sliding rod (504) on the side of the second moving block (505). A rotating clamping ring (507) is fixedly installed on the surfaces of the four second moving blocks (505), and the rotating clamping ring (507) is movably connected to the surface of the installation ring (501). Four L-shaped fixed clamping grooves (508) are equiangularly arranged inside the rotating clamping ring (507), and the positions of the L-shaped fixed clamping grooves (508) correspond to those of the positioning slots (502).

8. The aspiration device for treating otitis media in children according to claim 7, characterized in that: Four positioning plugs (601) are equiangularly and fixedly installed on one side of the pus collection cylinder (6), and the positions of the positioning plugs (601) correspond to those of the positioning slots (502) and the L-shaped fixed clamping grooves (508). A pressure stabilizing ventilation hole (602) is arranged on the side of the pus collection cylinder (6) away from the positioning plugs (601). An elastic plug (603) is arranged inside the pressure stabilizing ventilation hole (602).

9. The aspiration device for treating otitis media in children according to claim 5, characterized in that: Six limiting grooves (701) are equiangularly arranged at one end of the inner wall of the hand-held sleeve (7), and the positions of the limiting grooves (701) correspond to those of the second limiting strips (105). An anti-slip sleeve (702) is fixedly installed on the surface of the hand-held sleeve (7).

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