Throat negative pressure aspirator

Abstract

The invention discloses a throat negative pressure aspirator which comprises a main body, a piston and a connecting rod, one end of the main body is provided with an air suction port, the piston is arranged at one end of the connecting rod, the piston is slidably connected in the main body, the connecting rod is connected with the main body through a first spring, and the main body is provided with a lock catch assembly. According to the throat negative pressure aspirator, the connecting rod is locked through the lock catch assembly, an operator can push the safety lock upwards and then directly press the button through cooperation of the safety lock and the button, locking of the connecting rod is unlocked through the lock ring, the connecting rod drives the piston to move in the direction away from the air suction opening through the first spring, and negative pressure is formed in the main body; and foreign matters at the throat of the patient are sucked out.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and particularly relates to a throat negative pressure aspirator. Background Art

[0002] The throat negative pressure aspirator is a key device to ensure the patency of the patient's respiratory tract. It creates a pressure environment lower than the external atmospheric pressure through an internal device to form a pressure difference, and uses the pressure difference to suck out the liquid or foreign matter in the throat area, effectively maintaining the respiratory health of the patient.

[0003] In the prior art, negative pressure suction is achieved by a spring pushing a piston, but the child lock needs to be removed before use, which is inconvenient during use. Summary of the Invention

[0004] The object of the present invention is to provide a throat negative pressure aspirator to solve the problem of inconvenient use of the throat negative pressure aspirator in the prior art.

[0005] To this end, the first aspect of the present invention provides a throat negative pressure aspirator, including a main body, a piston and a connecting rod. One end of the main body is provided with a suction port. The piston is arranged at one end of the connecting rod. The piston is slidably connected in the main body. The connecting rod and the main body are connected by a first spring. The main body is provided with a lock assembly.

[0006] Preferably, the main body includes a first housing, a second housing and a third housing which are detachably connected in sequence. The piston is inside the first housing. The connecting rod passes through the second housing and the third housing to the outside of the third housing. The lock assembly is inside the third housing.

[0007] Preferably, a shock absorber is provided on the end face of the second housing.

[0008] Preferably, a sleeve cover is arranged at one end of the connecting rod, and the first spring is between the connecting rod and the sleeve cover.

[0009] Preferably, the lock assembly includes a fixed block and a lock ring. The fixed block is fixed inside the third housing. The lock ring is at one end of the fixed block. A button is arranged on the side wall of the lock ring. The side wall of the lock ring opposite to the button is connected to the side wall of the third housing by a second spring. A snap ring is arranged inside the lock ring. A locking groove is arranged on the side wall of the sleeve cover. The snap ring is snap-fitted with the locking groove.

[0010] Preferably, the lock assembly further includes a safety lock. The third housing is provided with a receiving groove. The safety lock slides in the receiving groove and is snap-fitted with the fixed block.

[0011] Preferably, the button is provided with a clamping plate, and the safety lock is provided with a clamping groove, and the clamping plate is connected with the clamping groove in a matching manner.

[0012] Preferably, a first one-way valve is provided at the air inlet.

[0013] Preferably, a second one-way valve is arranged inside the piston.

[0014] Preferably, a sealing ring is arranged on the side wall of the piston.

[0015] Beneficial effects:

[0016] 1. The present invention provides a throat negative pressure suction device. The connecting rod is locked by the locking component. The cooperation between the safety lock and the button enables the operator to directly press the button after lifting the safety lock upward. The locking ring is unlocked to release the locking of the connecting rod, and the first spring drives the piston to move away from the air inlet, forming a negative pressure inside the main body to suck out the foreign matter in the patient's throat.

[0017] 2. In the present invention, the sealing ring on the side wall of the piston realizes the seal between the piston and the main body, enabling the piston to stably form a negative pressure. The shock-absorbing block can play a buffering role to prevent the piston from directly hitting the main body due to excessive elastic force of the first spring, resulting in damage. Description of the drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings 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.

[0019] Figure 1 It is a schematic structural diagram of a throat negative pressure suction device in the present invention.

[0020] Figure 2 It is a cross-sectional view of a throat negative pressure suction device in the present invention in a compressed state.

[0021] Figure 3 It is a cross-sectional view of a throat negative pressure suction device in the present invention in a popped-up state.

[0022] Figure 4 It is a cross-sectional view of the locking component of a throat negative pressure suction device in the present invention.

[0023] Figure 5 It is a schematic structural diagram of the locking ring of a throat negative pressure suction device in the present invention.

[0024] Figure 6 It is a schematic structural diagram of the safety lock of a throat negative pressure suction device in the present invention.

[0025] Figure 7 This is a schematic structural view of the connecting rod of a throat negative pressure suction device in the present invention.

[0026] Figure 8 This is a schematic structural view of the sleeve cover of a throat negative pressure suction device in the present invention.

[0027] Figure 9 This is a cross-sectional view of the shock absorber in another embodiment of a throat negative pressure suction device in the present invention.

[0028] In the figure, 1 - main body, 11 - first housing, 12 - second housing, 13 - third housing, 14 - receiving groove, 15 - suction port, 2 - piston, 3 - connecting rod, 31 - sleeve cover, 311 - locking groove, 4 - first spring, 5 - locking component, 51 - fixed block, 52 - locking ring, 53 - button, 54 - second spring, 55 - safety lock, 521 - snap ring, 531 - clamping plate, 551 - clamping groove, 6 - shock absorber, 7 - first one-way valve, 8 - second one-way valve, 9 - sealing ring. Detailed Description of the Specific Embodiment

[0029] The content of the present invention can be more easily understood by referring to the following detailed description of the preferred embodiments of the present invention and the included examples. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. When there is a contradiction, the definition in this specification shall prevail.

[0030] Embodiment 1:

[0031] As Figures 1-7 shown, in the first aspect of this embodiment, a throat negative pressure suction device is provided, which includes a main body 1, a piston 2 and a connecting rod 3. One end of the main body 1 is provided with a suction port 15. The piston 2 is arranged at one end of the connecting rod 3. The piston 2 is slidably connected within the main body 1. The connecting rod 3 is connected to the main body 1 through a first spring 4. The main body 1 is provided with a locking component 5. Among them, the connecting rod 3 and the piston 2 can be an integrally formed structure or a fixed connection optionally.

[0032] The main body 1 includes a first housing 11, a second housing 12 and a third housing 13 which are detachably connected in sequence. The piston 2 is inside the first housing 11. The connecting rod 3 penetrates through the second housing 12 and the third housing 13 to the outside of the third housing 13. The locking component 5 is inside the third housing 13. Among them, the first housing 11 and the second housing 12 can be threadedly connected optionally, and the second housing 12 and the third housing 13 can be threadedly connected optionally.

[0033] A shock absorber 6 is provided on the end face of the second housing 12. The shock absorber 6 can play a buffering role to prevent the piston 2 from directly hitting the main body 1 due to excessive elastic force of the first spring 4, resulting in damage. In this embodiment, the shock absorber 6 is a buffer plug, which is embedded in the end face of the second housing 12 to reduce the impact force between the piston 2 and the main body 1.

[0034] A sleeve cover 31 is provided at one end of the connecting rod 3, and the first spring 4 is between the connecting rod 3 and the sleeve cover 31. The sleeve cover 31 is sleeved on one end of the connecting rod 3 and is fixedly connected by screws. There is a gap between the sleeve cover 31 and the connecting rod 3, and the first spring 4 is in the gap between the sleeve cover 31 and the connecting rod 3. An anti-rotation block 32 is provided on the end face of the connecting rod 31, and an anti-rotation groove 33 is provided inside the sleeve cover 31. The anti-rotation block 32 and the anti-rotation groove 33 cooperate to prevent relative rotation between the connecting rod 3 and the sleeve cover 31.

[0035] The locking component 5 includes a fixed block 51 and a locking ring 52. The fixed block 51 is fixed in the third housing 13, the locking ring 52 is at one end of the fixed block 51, a button 53 is provided on the side wall of the locking ring 52, and the side wall of the locking ring 52 opposite to the button 53 is connected to the side wall of the third housing 13 by a second spring 54. A snap ring 521 is provided inside the locking ring 52, and a locking groove 311 is provided on the side wall of the sleeve cover 31. The snap ring 521 is snap-fitted with the locking groove 311. After pushing the connecting rod 3 to press the piston 2 to the bottom, the elastic force of the second spring 54 causes the button 53 to pop outwards, and the snap ring 521 is stuck in the locking groove 311 on the sleeve cover 31 to prevent the first spring 4 from ejecting the connecting rod 3.

[0036] The locking component 5 further includes a safety lock 55. The third housing 13 is provided with a receiving groove 14, and the safety lock 55 slides in the receiving groove 14 and is snap-fitted with the fixed block 51. The button 53 is provided with a clamping plate 531, and the safety lock 55 is provided with a clamping groove 551. The clamping plate 531 is cooperatively connected with the clamping groove 551. The safety lock 55 is used to prevent accidental touch of the button 53, resulting in the ejection of the connecting rod 3. Slide the safety lock 55 in the receiving groove 14 to separate the safety lock 55 from the fixed block 51, and the clamping plate 531 is separated from the clamping groove 551.

[0037] A first one-way valve 7 is provided at the air inlet 15. A second one-way valve 8 is provided inside the piston 2. The air inlet 15 is used to connect with a face mask. The first one-way valve 7 and the second one-way valve 8 enable the gas to suck foreign matters from the patient's mouth and nasal cavity without backflow.

[0038] A sealing ring 9 is provided on the side wall of the piston 2. The sealing ring 9 is used to achieve the seal between the piston 2 and the main body 1, so that the piston 2 can stably form a negative pressure.

[0039] Working principle: Press the connecting rod 3 to push the piston 2 to the end of the first housing 11. The elastic force of the second spring 54 causes the button 53 to pop outwards. The snap ring 521 is stuck in the locking groove 311 on the sleeve cover 31 to prevent the first spring 4 from popping out the connecting rod 3. When in use, the safety lock 55 can be pushed upwards with one hand to separate the safety lock 55 from the fixed block 51 and the clamping plate 531 from the clamping groove 551. Then press the button 53 to compress the second spring 54, so that the snap ring 521 and the locking groove 311 are separated. The first spring 4 quickly pops out the connecting rod 3. The piston 2 slides in the first housing 11 to generate negative pressure. The first one-way valve 7 and the second one-way valve 8 enable the gas to suck foreign objects from the patient's mouth and nose with the foreign objects and prevent backflow.

[0040] Embodiment 2:

[0041] As Figure 9 shown, the difference between Embodiment 2 and Embodiment 1 is that the shock absorber 6 is a buffer pad that fits on the end face of the second housing 12 and is used to reduce the impact force between the piston 2 and the main body 1. Compared with the buffer plug in Embodiment 1, it avoids the buffer plug falling off due to excessive impact.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention and should all be included in the protection scope of the present invention.

Claims

1. A throat negative pressure aspirator, characterized in that: It includes a main body, a piston and a connecting rod. One end of the main body is provided with an air intake port. The piston is provided at one end of the connecting rod. The piston is slidably connected in the main body. The connecting rod is connected to the main body through a first spring. The main body is provided with a locking assembly.

2. A throat negative pressure aspirator according to claim 1, characterized in that: The main body includes a first shell, a second shell and a third shell that are detachably connected in sequence, the piston is inside the first shell, the connecting rod passes through the second shell and the third shell to the outside of the third shell, and the locking assembly is inside the third shell.

3. A throat negative pressure aspirator according to claim 2, characterized in that: A shock absorbing member is disposed on the end surface of the second shell.

4. A throat negative pressure aspirator according to claim 2, characterized in that: A cover is provided at one end of the connecting rod, and the first spring is between the connecting rod and the cover.

5. A throat negative pressure aspirator according to claim 4, characterized in that: The locking assembly includes a fixing block and a locking ring, wherein the fixing block is fixed in the third shell body, the locking ring is at one end of the fixing block, a button is provided on the side wall of the locking ring, the side wall of the locking ring on the other side opposite to the button is connected to the side wall of the third shell body through a second spring, a snap ring is provided in the locking ring, a locking groove is provided on the side wall of the cover, and the snap ring is engaged and connected with the locking groove.

6. A throat negative pressure aspirator according to claim 5, characterized in that: The lock assembly also includes a safety lock. The third shell is provided with a receiving groove. The safety lock slides in the receiving groove. The safety lock is engaged and connected with the fixing block.

7. A throat negative pressure aspirator according to claim 6, characterized in that: The button is provided with a card plate, the safety lock is provided with a card slot, and the card plate is cooperatively connected with the card slot.

8. A throat negative pressure aspirator according to claim 1, characterized in that: The air intake port is provided with a first one-way valve.

9. A throat negative pressure aspirator according to claim 1, characterized in that: A second one-way valve is arranged in the piston.

10. A throat negative pressure aspirator according to claim 1, characterized in that: The side wall of the piston is provided with a sealing ring.

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