Sputum suction device

Abstract

The present application provides a kind of sputum suction device, including suction pipe, liquid collection bag, negative pressure pipe, push-pull assembly, shielding assembly and connecting assembly;Suction pipe one end and negative pressure pipe communicate, and the lateral wall of suction pipe and liquid collection bag communicate;Negative pressure pipe is equipped with vent, shielding assembly is slidably arranged on the outer wall of negative pressure pipe, and can shield vent;Push-pull assembly is slidably arranged in negative pressure pipe, and can form closed cavity with the inner wall of negative pressure pipe;Connecting assembly one end and push-pull assembly are connected, the other end is placed on the outer wall of negative pressure pipe, and is kept away from shielding assembly;Pull push-pull assembly outward, and connecting assembly can drive shielding assembly to slide.The above-mentioned sputum suction device can reduce the pressure generated to suction pipe when pushing inward, and then reduce the situation that sputum in suction pipe is pushed back into the body of patient.

Description

Technical Field

[0001] This invention relates to the field of respiratory nursing technology, specifically to a suction device. Background Technology

[0002] The respiratory tract is an important channel for the exchange of gases between the inside and outside of the human body, and it plays a role in supporting the normal physiological metabolism of the human body. Newborns, the elderly, and patients with respiratory diseases are prone to difficulty in expectorating phlegm. Excessive phlegm and pus can easily block the airway, directly leading to dangerous symptoms of breathing difficulties.

[0003] In clinical practice, suctioning is sometimes performed using a negative pressure machine connected to a suction tube. However, negative pressure machines are difficult to move, so more often a portable suction device is used, such as a syringe connected to a suction tube. Due to the characteristics of the syringe, if suctioning is needed again after one suctioning operation, airflow will be pushed into the suction tube. If there is any sputum in the suction tube that has not yet been stored, it will be pushed back into the patient's body. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention proposes a sputum suction device to solve the technical problem mentioned in the background art, in which the unstored sputum in the suction tube is easily pushed back into the patient's body during multiple suctioning processes when using sputum suction devices other than negative pressure machines.

[0005] To solve this technical problem, the technical solution adopted by the present invention is as follows:

[0006] A suction device includes a suction tube, a collection bag, a negative pressure tube, a push-pull assembly, a shielding assembly, and a connecting assembly;

[0007] One end of the suction tube is connected to the negative pressure tube, and the side wall of the suction tube is connected to the collection bag;

[0008] The negative pressure pipe is provided with a vent hole. The shielding component is slidably disposed on the outer wall of the negative pressure pipe and can shield the vent hole. The push-pull component is slidably disposed inside the negative pressure pipe and can form a closed cavity with the inner wall of the negative pressure pipe. One end of the connecting component is connected to the push-pull component, and the other end is placed on the outer wall of the negative pressure pipe, with a distance between it and the shielding component. Pulling the push-pull component outward can cause the connecting component to slide the shielding component.

[0009] Furthermore, a one-way mechanism, a connecting rope, and a pushing component are also provided; the one-way mechanism is rotatably disposed on the outer wall of the negative pressure pipe and is connected to the pushing component through the connecting rope, and the pushing component is elastic; when the push-pull component is pulled outward, the connecting component pushes the one-way mechanism to rotate and then pushes the blocking component, so that the blocking component moves away from the vent; when the push-pull component is pushed inward, the connecting component pushes the one-way component to rotate, so that the connecting rope is wrapped around the one-way component, the pushing component is compressed, and after the connecting component leaves the one-way component, the pushing component slides outward to push the blocking component to close the vent.

[0010] Furthermore, the one-way mechanism includes a toothed ring, a rotating assembly, and a pawl assembly; the toothed ring and the rotating assembly are rotatably connected to the outer wall of the negative pressure pipe, and a plurality of ratchet teeth are evenly arranged around the inner side of the toothed ring; the rotating assembly is coaxial with the toothed ring and is disposed inside the toothed ring, and the connecting rope is connected to the rotating assembly; the pawl assembly is slidably disposed on the rotating assembly and can slide along the radial direction of the toothed ring; when the connecting assembly is pulled outward, it can drive the pawl assembly to slide, and when the connecting assembly is pushed inward, it can drive the pawl assembly to rotate, so that the connecting rope is wound around the rotating assembly.

[0011] Furthermore, the rotating assembly includes a turntable and a rotating shaft; the turntable is rotatably connected to the outer wall of the negative pressure pipe and coaxially disposed within the toothed ring, and the pawl assembly is slidably disposed on the turntable; the rotating shaft is coaxially fixed on the turntable and connected to the connecting rope.

[0012] Furthermore, the pawl assembly includes a pawl body and a pawl spring; the pawl body is slidably disposed on the turntable and is connected to the rotating shaft via the pawl spring.

[0013] Furthermore, the pushing assembly includes a fixed plate, a pushing spring, and a pushing block; the fixed plate is fixed to the outer wall of the negative pressure pipe, the pushing spring is provided on the side of the fixed plate away from the toothed ring, and the pushing block is slidably connected to the outer wall of the negative pressure pipe and connected to the connecting rope.

[0014] Furthermore, the connecting shielding assembly includes a shielding block and a pushing rod; the shielding block is slidably connected to the outer wall of the negative pressure pipe, and the pushing rod is an L-shaped rod and is disposed on the shielding block.

[0015] Furthermore, the connecting assembly includes a connecting rod and a rack; the rack is slidably connected to the outer wall of the negative pressure pipe and connected to the push-pull assembly through the connecting rod, and the rack can mesh with the toothed ring.

[0016] Furthermore, the push-pull assembly includes a sealing plate and a push-pull rod; the sealing plate is slidably disposed inside the negative pressure pipe and can form a closed cavity with the inner wall of the negative pressure pipe; one end of the push-pull rod is connected to the sealing plate, and the other end extends outward and is connected to the connecting rod.

[0017] Furthermore, the sealing plate is provided with flexible pads around its perimeter and is connected to the inner wall of the negative pressure pipe through the flexible pads.

[0018] The advancements of this application compared to existing technologies are as follows:

[0019] Initially, the shielding component closes the ventilation port. Negative pressure is generated by pulling the push-pull component outwards to perform suctioning. After pulling outwards a certain distance, the connecting component, connected to the push-pull component, pushes the shielding component to slide, gradually moving it away from the ventilation port, opening the ventilation port and ending the negative pressure. Then, the push-pull component is pushed inwards. After pushing a certain distance, the connecting component causes the shielding component to slide and gradually close the ventilation port. Because the ventilation port only gradually closes after the push-pull component is pushed inwards a certain distance, most of the pressure generated during this inward push is discharged through the ventilation port. The pressure on the negative pressure tube only gradually increases during the short distance the shielding component travels from the beginning until the ventilation port is completely closed. Therefore, only a small amount of pressure is generated during the inward push of the push-pull component, reducing the possibility of sputum in the suction tube being pushed back into the patient's body. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of a suction device provided in an embodiment of the present invention;

[0022] Figure 2 for Figure 1 An enlarged schematic diagram of part A shown;

[0023] Figure 3 for Figure 1 A schematic diagram of the push-pull assembly is shown.

[0024] Figure 4 for Figure 1 The diagram shows a negative pressure pipe.

[0025] Figure label:

[0026] Suction tube 1

[0027] Liquid collection bag 2.

[0028] Negative pressure pipe 3, vent 31

[0029] Push-pull assembly 4, sealing plate 41, push-pull rod 42, flexible pad 43

[0030] Shielding component 5, shielding block 51, push rod 52

[0031] Connecting component 6, connecting rod 61, rack 62,

[0032] One-way mechanism 7, gear ring 71, rotating assembly 72, turntable 721, rotating shaft 722, pawl assembly 73, pawl body 731, pawl spring 732.

[0033] Connecting rope 8

[0034] Pushing component 9, fixing plate 91, pushing spring 92, pushing block 93. Detailed Implementation

[0035] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0036] Please refer to the following: Figures 1-4 This embodiment provides a suction device, including a suction tube 1, a collection bag 2, a negative pressure tube 3, a push-pull assembly 4, a shielding assembly 5, and a connecting assembly 6.

[0037] One end of the suction tube 1 is connected to the negative pressure tube 3, and the side wall of the suction tube 1 is connected to the collection bag 2. It should be understood that the side wall of the suction tube 1 is provided with a through hole, through which it is connected to the collection bag 2. Sputum flows into the collection bag 2 after passing through the through hole. Preferably, the through hole is located at the bottom.

[0038] The negative pressure tube 3 is provided with a vent 31. The shielding component 5 is slidably disposed on the outer wall of the negative pressure tube 3 and can shield the vent 31. The push-pull component 4 is slidably disposed inside the negative pressure tube 3 and can form a closed cavity with the inner wall of the negative pressure tube 3. It should be understood that the closed cavity is formed when the shielding component 5 seals the vent 31. Preferably, the vent 31 is located near the suction tube 1. One end of the connecting component 6 is connected to the push-pull component 4, and the other end is placed on the outer wall of the negative pressure tube 3, with a distance between it and the shielding component 5. Pulling the push-pull component 4 outward can cause the connecting component 6 to slide the shielding component 5. It should be understood that the connecting component 6 is located at one end of the outer wall of the negative pressure pipe 3, and there is a distance between it and the blocking component 5 on both sides in the sliding direction. This allows the push-pull component 4 to slide and open the vent 31 only after being pulled outward for a period of time. Similarly, the push-pull component 4 is pushed inward for a period of time before it slides towards the vent 31, thus closing the vent 31. Preferably, the vent 31 is an elongated hole.

[0039] Initially, the shielding component 5 closes the ventilation port 31. Negative pressure is generated by pulling outwards and pushing outwards by the push-pull component 4 to perform suctioning. After pulling outwards a certain distance, the connecting component 6 connected to the push-pull component 4 pushes the shielding component 5 to slide, gradually moving it away from the ventilation port 31, thus opening the ventilation port 31 and ending the negative pressure. Subsequently, the push-pull component 4 is pushed inwards. After the push-pull component 4 is pushed inwards a certain distance, the connecting component 6 drives the shielding component 5 to slide and gradually close the ventilation port 31. Since the ventilation port 31 is gradually closed only after the push-pull component 4 is pushed inwards a certain distance, most of the pressure generated by the push-pull component 4 during inward pushing is discharged through the ventilation port 31. The pressure on the negative pressure tube 3 is only gradually increased during the short distance from the start of the shielding component 5 to the complete closure of the ventilation port 31. Therefore, only a small amount of pressure is generated when the push-pull component 4 is pushed inwards, reducing the occurrence of sputum in the suction tube 1 being pushed back into the patient's body.

[0040] In other solutions, a one-way mechanism 7, a connecting rope 8, and a pushing component 9 are also provided. The one-way mechanism 7 is rotatably mounted on the outer wall of the negative pressure pipe 3 and is connected to the pushing component 9 via the connecting rope 8. The pushing component 9 is elastic. When the push-pull component 4 is pulled outward, the connecting component 6 pushes the one-way mechanism 7 to rotate and pushes the blocking component 5, causing the blocking component 5 to move away from the vent 31. When the push-pull component 4 is pushed inward, the connecting component 6 pushes the one-way component to rotate, causing the connecting rope 8 to wrap around the one-way component. The pushing component 9 is compressed. After the connecting component 6 leaves the one-way component, the pushing component 9 slides outward to push the blocking component 5 to close the vent 31.

[0041] It should be understood that when the push-pull assembly 4 is pulled outward, the connecting assembly 6 drives the one-way assembly to rotate without causing the connecting rope 8 to become entangled. When the push-pull assembly 4 is pushed inward, the connecting assembly 6 drives the one-way assembly to rotate, causing the connecting rope 8 to become entangled within it. This causes the pushing assembly 9 to slide and compress. After the connecting assembly 6 leaves the one-way assembly, the compressed pushing assembly 9 is released from its restraint and ejects outward, thereby pushing the blocking assembly 5 and closing the vent 31. During the inward push-pull assembly 4 process, the vent 31 remains open. Only when the push-pull assembly 4 drives the connecting assembly 6 away from the one-way assembly is the vent 31 closed by the ejection of the pushing assembly 9, which further reduces the thrust generated inside the suction tube 1 during inward push. It should be noted that in this scheme, when the push-pull assembly 4 is pushed inward, the connecting assembly 6 does not directly push the blocking assembly 5. In both the initial and final states, there is a gap between the connecting assembly 6 and the blocking assembly 5 near the vent 31.

[0042] In other embodiments, the one-way mechanism 7 includes a toothed ring 71, a rotating assembly 72, and a pawl assembly 73. The toothed ring 71 and the rotating assembly 72 are rotatably connected to the outer wall of the negative pressure pipe 3, and the inner side of the toothed ring 71 is evenly provided with a plurality of ratchet teeth. The rotating assembly 72 is coaxial with the toothed ring 71 and is located inside the toothed ring 71. The connecting rope 8 is connected to the rotating assembly 72. The pawl assembly 73 is slidably disposed on the rotating assembly 72 and can slide radially along the toothed ring 71. When the connecting assembly 6 is pulled outward, it can drive the pawl assembly 73 to slide. When the connecting assembly 6 is pushed inward, it can drive the pawl assembly 73 to rotate, so that the connecting rope 8 is wrapped around the rotating assembly 72. It should be understood that both the outward pulling and the inward pushing of the connecting assembly 6 can cause the toothed ring 71 to rotate, but only when it is pushed inward will the rotation of the toothed ring 71 cause the pawl assembly 73 to rotate along with it, and then drive the rotating assembly 72 to rotate along with it. The outward pulling of the connecting assembly 6 causes the pawl assembly 73 to slide away from the inner ratchet teeth of the toothed ring 71 and then re-engage.

[0043] In other embodiments, the rotating assembly 72 includes a turntable 721 and a rotating shaft 722; the turntable 721 is rotatably connected to the outer wall of the negative pressure pipe 3 and coaxially disposed within the toothed ring 71, and the pawl assembly 73 is slidably disposed on the turntable 721; the rotating shaft 722 is coaxially fixed on the turntable 721 and connected to the connecting rope 8. It should be understood that during inward pushing, the connecting rope 8 gradually winds around the rotating shaft 722.

[0044] In other embodiments, the pawl assembly 73 includes a pawl body 731 and a pawl spring 732; the pawl body 731 is slidably disposed on the turntable 721 and connected to the rotating shaft 722 via the pawl spring 732. Preferably, limiting plates can be provided on both sides of the pawl body 731 so that the pawl body 731 can only slide radially along the turntable 721.

[0045] In other embodiments, the pushing assembly 9 includes a fixed plate 91, a pushing spring 92, and a pushing block 93. The fixed plate 91 is fixed to the outer wall of the negative pressure pipe 3, and the pushing spring 92 is located on the side of the fixed plate 91 away from the toothed ring 71. The pushing block 93 is slidably connected to the outer wall of the negative pressure pipe 3 and connected to the connecting rope 8. It should be understood that when the assembly is pushed inward, the rotating shaft 722 is rotated, causing the connecting rope 8 to gradually wrap around the rotating shaft 722. The connecting rope 8 pulls the pushing block 93 closer to the fixed plate 91, compressing the pushing spring 92. When the connecting assembly 6 leaves the toothed ring 71, the compressed pushing spring 92 gives the pushing block 93 an impulse, causing it to impact the blocking assembly 5, thus sealing the vent 31.

[0046] In other embodiments, the connecting shielding assembly 5 includes a shielding block 51 and a push rod 52; the shielding block 51 is slidably connected to the outer wall of the negative pressure pipe 3, and the push rod 52 is an L-shaped rod and is disposed on the shielding block 51.

[0047] In other embodiments, the connecting assembly 6 includes a connecting rod 61 and a rack 62; the rack 62 is slidably connected to the outer wall of the negative pressure pipe 3 and connected to the push-pull assembly 4 via the connecting rod 61, and the rack 62 can mesh with the toothed ring 71. It should be understood that during outward pulling, the rack 62 presses against the push rod 52, causing the blocking block 51 to slide. Simultaneously, when the one-way mechanism 7 is provided, the rack 62 maintains a gap with the blocking block 51 in both the initial and final states of a single push-pull process.

[0048] In other embodiments, the push-pull assembly 4 includes a sealing plate 41 and a push-pull rod 42; the sealing plate 41 is slidably disposed inside the negative pressure pipe 3 and can form a closed cavity with the inner wall of the negative pressure pipe 3; one end of the push-pull rod 42 is connected to the sealing plate 41, and the other end extends outward and is connected to the connecting rod 61.

[0049] In other designs, the sealing plate 41 is also provided with flexible pads 43 around its perimeter, and is connected to the inner wall of the negative pressure pipe 3 through the flexible pads 43. The flexible pads 43 make the sliding of the sealing plate 41 smoother.

[0050] The aforementioned suction device can reduce the pressure on the suction tube when pushed inward, thereby reducing the occurrence of sputum being pushed back into the patient's body.

[0051] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A suction device, characterized in that, It includes a suction tube, a collection bag, a negative pressure tube, a push-pull assembly, a shielding assembly, and a connecting assembly; One end of the suction tube is connected to the negative pressure tube, and the side wall of the suction tube is connected to the collection bag; The negative pressure pipe is provided with a vent hole. The shielding component is slidably disposed on the outer wall of the negative pressure pipe and can shield the vent hole. The push-pull component is slidably disposed inside the negative pressure pipe and can form a closed cavity with the inner wall of the negative pressure pipe. One end of the connecting component is connected to the push-pull component, and the other end is placed on the outer wall of the negative pressure pipe, with a distance between it and the shielding component. Pulling the push-pull component outward can cause the connecting component to slide the shielding component. The device is characterized by further comprising a one-way mechanism, a connecting rope, and a pushing assembly; the one-way mechanism is rotatably disposed on the outer wall of the negative pressure pipe and connected to the pushing assembly via the connecting rope, the pushing assembly being elastic; when the push-pull assembly is pulled outward, the connecting assembly pushes the one-way mechanism to rotate and then pushes the blocking assembly, causing the blocking assembly to move away from the vent; when the push-pull assembly is pushed inward, the connecting assembly pushes the one-way mechanism to rotate, causing the connecting rope to wrap around the one-way mechanism, compressing the pushing assembly; after the connecting assembly leaves the one-way mechanism, the pushing assembly slides outward to push the blocking assembly to close the vent.

2. The suction device according to claim 1, characterized in that, The one-way mechanism includes a toothed ring, a rotating assembly, and a pawl assembly. The toothed ring and the rotating assembly are rotatably connected to the outer wall of the negative pressure pipe. The inner side of the toothed ring is evenly provided with a plurality of ratchet teeth. The rotating assembly is coaxial with the toothed ring and is disposed inside the toothed ring. The connecting rope is connected to the rotating assembly. The pawl assembly is slidably disposed on the rotating assembly and can slide along the radial direction of the toothed ring. When the connecting assembly is pulled outward, it can drive the pawl assembly to slide. When the connecting assembly is pushed inward, it can drive the pawl assembly to rotate, so that the connecting rope is wound around the rotating assembly.

3. The suction device according to claim 2, characterized in that, The rotating assembly includes a turntable and a rotating shaft; the turntable is rotatably connected to the outer wall of the negative pressure pipe and coaxially disposed within the toothed ring; the pawl assembly is slidably disposed on the turntable; the rotating shaft is coaxially fixed on the turntable and connected to the connecting rope.

4. A suction device according to claim 3, characterized in that, The pawl assembly includes a pawl body and a pawl spring; the pawl body is slidably disposed on the turntable and is connected to the rotating shaft via the pawl spring.

5. A suction device according to claim 4, characterized in that, The pushing assembly includes a fixed plate, a pushing spring, and a pushing block; the fixed plate is fixed to the outer wall of the negative pressure pipe, the pushing spring is provided on the side of the fixed plate away from the toothed ring, and the pushing block is slidably connected to the outer wall of the negative pressure pipe and connected to the connecting rope.

6. A suction device according to claim 4, characterized in that, The connection shielding assembly includes a shielding block and a push rod; the shielding block is slidably connected to the outer wall of the negative pressure pipe, and the push rod is an L-shaped rod and is disposed on the shielding block.

7. A suction device according to claim 6, characterized in that, The connecting assembly includes a connecting rod and a rack; the rack is slidably connected to the outer wall of the negative pressure pipe and connected to the push-pull assembly through the connecting rod, and the rack can mesh with the toothed ring.

8. A suction device according to claim 7, characterized in that, The push-pull assembly includes a sealing plate and a push-pull rod; the sealing plate is slidably disposed inside the negative pressure pipe and can form a closed cavity with the inner wall of the negative pressure pipe; one end of the push-pull rod is connected to the sealing plate, and the other end extends outward and is connected to the connecting rod.

9. A suction device according to claim 8, characterized in that, The sealing plate is also provided with flexible pads around its perimeter, and is connected to the inner wall of the negative pressure pipe through the flexible pads.

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