Throat negative pressure aspirator

Abstract

The utility model 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 connected in the main body in a sliding mode, 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, and 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 to suck out foreign matters at the throat of the patient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical devices, concretely relates to a throat negative pressure aspirator. BACKGROUND

[0002] The throat negative pressure aspirator is the key equipment for ensuring the smoothness of the respiratory tract of a patient. It creates a pressure environment lower than the atmospheric pressure outside through an internal device, forms a pressure difference, and uses the pressure difference to suck away the liquid or foreign matter at the throat part, effectively maintaining the respiratory health of the patient.

[0003] The prior art realizes negative pressure suction by a spring pushing a piston, but the child lock needs to be removed before use, which is inconvenient to use. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a throat negative pressure aspirator, which solves the problem of inconvenient use of the prior art.

[0005] Therefore, the utility model provides a throat negative pressure aspirator in the first aspect, which comprises a main body, a piston and a connecting rod, one end of the main body is provided with an air inlet, 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.

[0006] Preferably, the main body comprises a first shell, a second shell and a third shell which are sequentially detachably connected, the piston is arranged in the first shell, the connecting rod penetrates through the second shell and the third shell to the outside of the third shell, and the lock catch assembly is arranged in the third shell.

[0007] Preferably, the end face of the second shell is provided with a damping piece.

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

[0009] Preferably, the lock catch assembly comprises a fixed block and a lock ring, the fixed block is fixed in the third shell, the lock ring is arranged at one end of the fixed block, the side wall of the lock ring is provided with a button, the side wall of the other side of the lock ring opposite to the button is connected with the side wall of the third shell through a second spring, a clasp ring is arranged in the lock ring, a locking groove is arranged on the side wall of the cover, and the clasp ring is connected with the locking groove in a clamping mode.

[0010] Preferably, the lock catch assembly further comprises a safety lock, the third shell is provided with a containing groove, the safety lock is slidably arranged in the containing groove, and the safety lock is connected with the fixed block in a clamping mode.

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

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

[0013] Preferably, the piston is internally provided with a second one-way valve.

[0014] Preferably, the side wall of the piston is provided with a sealing ring.

[0015] Beneficial effects:

[0016] 1. The utility model provides a throat negative pressure aspirator, through the lock catch subassembly to the lock of connecting rod, the cooperation of safety lock and button can make operator to open safety lock directly press button after dialing upward, the lock of connecting rod is released to the lock ring, the first spring removes the piston with connecting rod to the direction away from the air inlet, forms the negative pressure in the main part, and the foreign matter of patient throat is sucked out.

[0017] 2. The sealing ring of piston side wall realizes the sealing between piston and main part in the utility model, makes the piston can form the negative pressure stably, and the shock pad can play the buffering effect, avoids the damage caused by the excessive elasticity of first spring and the direct impact of piston to main part. DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for ordinary skilled person in the art, other drawings can be obtained according to these drawings without creating creative labor.

[0019] Figure 1 It is a structure schematic view of a throat negative pressure aspirator in the utility model.

[0020] Figure 2 It is a sectional view of compression state of a throat negative pressure aspirator in the utility model.

[0021] Figure 3 It is a sectional view of pop-out state of a throat negative pressure aspirator in the utility model.

[0022] Figure 4 It is a sectional view of lock catch subassembly of a throat negative pressure aspirator in the utility model.

[0023] Figure 5 It is a structure schematic view of lock ring of a throat negative pressure aspirator in the utility model.

[0024] Figure 6It is the structure schematic view of the safety lock of the throat negative pressure aspirator.

[0025] Figure 7 It is the structure schematic view of the connecting rod of the throat negative pressure aspirator.

[0026] Figure 8 It is the structure schematic view of the cover of the throat negative pressure aspirator.

[0027] Figure 9 It is the sectional view of the damping piece in another embodiment of the throat negative pressure aspirator.

[0028] In the figure, 1 is the main body, 11 is the first shell, 12 is the second shell, 13 is the third shell, 14 is the containing groove, 15 is the air inlet, 2 is the piston, 3 is the connecting rod, 31 is the cover, 311 is the locking groove, 4 is the first spring, 5 is the lock assembly, 51 is the fixed block, 52 is the lock ring, 53 is the button, 54 is the second spring, 55 is the safety lock, 521 is the clasp ring, 531 is the clamping plate, 551 is the clamping groove, 6 is the damping piece, 7 is the first one-way valve, 8 is the second one-way valve, and 9 is the sealing ring. DETAILED DESCRIPTION

[0029] The content of the present application can be more easily understood by referring to the following detailed description of the preferred embodiments of the present application and the examples included therein. 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 this application belongs. In case of conflict, the definition contained herein will control.

[0030] Example 1:

[0031] As Figures 1-8 shown, the first aspect of the present embodiment provides a throat negative pressure aspirator, which comprises a main body 1, a piston 2 and a connecting rod 3, one end of the main body 1 is provided with an air inlet 15, the piston 2 is arranged at one end of the connecting rod 3, the piston 2 is slidingly connected in the main body 1, the connecting rod 3 is connected with the main body 1 through the first spring 4, and the main body 1 is provided with a lock assembly 5. Wherein, the connecting rod 3 and the piston 2 are optionally an integral structure or fixedly connected.

[0032] The main body 1 comprises a first shell 11, a second shell 12 and a third shell 13 which are detachably connected in sequence, the piston 2 is inside the first shell 11, the connecting rod 3 penetrates through the second shell 12 and the third shell 13 to the outside of the third shell 13, and the lock assembly 5 is in the third shell 13. Wherein, the first shell 11 and the second shell 12 are optionally threadedly connected, and the second shell 12 and the third shell 13 are optionally threadedly connected.

[0033] The end face of the second shell 12 is provided with a shock absorbing piece 6. The shock absorbing piece 6 can play a buffering role to avoid the piston 2 directly impacting the main body 1 due to excessive elastic force of the first spring 4, thereby causing damage. In this embodiment, the shock absorbing piece 6 is a buffer plug embedded on the end face of the second shell 12, which is used to reduce the impact force between the piston 2 and the main body 1.

[0034] One end of the connecting rod 3 is provided with a cover 31, and the first spring 4 is between the connecting rod 3 and the cover 31. The cover 31 is sleeved on one end of the connecting rod 3 and is fixedly connected by a screw. There is a gap between the cover 31 and the connecting rod 3, and the first spring 4 is in the gap between the cover 31 and the connecting rod 3. The end face of the connecting rod 31 is provided with an anti-rotation block 32, and the inside of the cover 31 is provided with an anti-rotation groove 33. The anti-rotation block 32 and the anti-rotation groove 33 are matched to avoid relative rotation between the connecting rod 3 and the cover 31.

[0035] The lock assembly 5 includes a fixed block 51 and a lock ring 52. The fixed block 51 is fixed in the third shell 13, and the lock ring 52 is at one end of the fixed block 51. The side wall of the lock ring 52 is provided with a button 53, and the side wall opposite to the button 53 of the lock ring 52 is connected with the side wall of the third shell 13 through a second spring 54. The lock ring 52 is provided with a clasp ring 521, and the side wall of the cover 31 is provided with a locking groove 311. The clasp ring 521 is connected with the locking groove 311 in a clamping manner. After the piston 2 is pressed to the bottom by pushing the connecting rod 3, the elastic force of the second spring 54 makes the button 53 pop out outward, and the clasp ring 521 is clamped in the locking groove 311 on the cover 31, thereby preventing the connecting rod 3 from being popped out by the first spring 4.

[0036] The lock assembly 5 further includes a safety lock 55. The third shell 13 is provided with a containing groove 14, and the safety lock 55 slides in the containing groove 14. The safety lock 55 is connected with the fixed block 51 in a clamping manner. 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 and the clamping groove 551 are connected in a matching manner. The safety lock 55 is used to prevent the connecting rod 3 from being popped out due to accidental pressing of the button 53. The safety lock 55 is separated from the fixed block 51 by sliding in the containing groove 14, and the clamping plate 531 is separated from the clamping groove 551.

[0037] The air inlet 15 is provided with a first one-way valve 7. The piston 2 is provided with a second one-way valve 8. The air inlet 15 is used to be connected with a face mask. The first one-way valve 7 and the second one-way valve 8 make the gas with foreign matters sucked out from the oral cavity of the patient, and the gas will not flow back.

[0038] The side wall of the piston 2 is provided with a sealing ring 9. The sealing ring 9 is used to realize the sealing 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 shell 11, the elastic force of the second spring 54 makes the button 53 pop out, the snap ring 521 is clamped in the locking groove 311 on the cover 31, preventing 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 is separated from the clamping groove 551. Then press the button 53, compress the second spring 54, make the snap ring 521 and the locking groove 311 separate, the first spring 4 will quickly pop out the connecting rod 3, the piston 2 slides in the first shell 11 to generate negative pressure, the first one-way valve 7 and the second one-way valve 8 make the gas with foreign matter suck out the foreign matter from the oral cavity of the patient, and will not backflow.

[0040] Embodiment 2

[0041] As shown in Figure 9 Embodiment 2 is different from Embodiment 1 in that the damping member 6 is a buffer pad attached to the end face of the second shell 12, which 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 impact being too large to cause the buffer plug to fall off.

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

Claims

1. A negative pressure suction device for the pharynx, 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. The piston is disposed at one end of the connecting rod and is slidably connected within the main body. The connecting rod is connected to the main body by a first spring. The main body is provided with a locking assembly.

2. The pharyngeal negative pressure suction device according to claim 1, characterized in that, The main body includes a first housing, a second housing, and a third housing that 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, and the locking assembly is inside the third housing.

3. A negative pressure suction device for the pharynx according to claim 2, characterized in that, The end face of the second housing is provided with a shock-absorbing component.

4. A negative pressure suction device for the pharynx according to claim 2, characterized in that, A sleeve is provided at one end of the connecting rod, and the first spring is located between the connecting rod and the sleeve.

5. A negative pressure suction device for the pharynx according to claim 4, characterized in that, The locking assembly includes a fixing block and a locking ring. The fixing block is fixed inside the third housing. The locking ring is located 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 opposite to the button is connected to the side wall of the third housing by a second spring. A retaining ring is provided inside the locking ring. A locking groove is provided on the side wall of the cover. The retaining ring engages with the locking groove.

6. A negative pressure suction device for the pharynx according to claim 5, characterized in that, The locking assembly also includes a safety lock. The third housing is provided with a receiving groove, in which the safety lock slides and engages with the fixing block.

7. A negative pressure suction device for the pharynx according to claim 6, characterized in that, The button is equipped with a card plate, and the safety lock is equipped with a card slot. The card plate and the card slot are connected in cooperation.

8. A negative pressure suction device for the pharynx according to claim 1, characterized in that, The air intake is equipped with a first one-way valve.

9. A negative pressure suction device for the pharynx according to claim 1, characterized in that, A second one-way valve is provided inside the piston.

10. A negative pressure suction device for the pharynx according to claim 1, characterized in that, The piston has a sealing ring on its side wall.

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