Connecting pipe of negative pressure aspirator

Abstract

The utility model discloses a negative pressure aspirator connecting pipe which comprises a three-way connector, a dirty liquid drainage pipe, a waste gas drainage pipe and a discharge pipe. One end, far away from the waste gas drainage pipe, of the one-way conduction assembly, one end, far away from the human body, of the dirty liquid drainage pipe and one end of the discharge pipe are connected with three connectors of the three-way connector respectively. According to the utility model, the one-way conduction component is additionally arranged between the waste gas drainage tube and the three-way joint, and the gas in the waste gas drainage tube can normally enter the three-way joint by utilizing the one-way conduction characteristic of the one-way conduction component, and the liquid in the dirty liquid drainage tube is blocked by the one-way conduction component when flowing back into the one-way conduction component, so that the liquid in the dirty liquid drainage tube is not blocked by the one-way conduction component. Therefore, the situation that the waste liquid flows back to the waste gas pipeline can be avoided, and the infection risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a connecting tube for a negative pressure aspirator. Background Technique

[0002] The negative pressure suction device is composed of a voltage regulator, a liquid collection bottle, a hose, etc. There are two hose interfaces on the liquid collection bottle, one connected to the negative pressure terminal and the other connected to the working cavity. When the negative pressure terminal is connected, air negative pressure will be generated in the liquid collection bottle, and this negative pressure will guide dirt and waste gas to flow into the liquid collection bottle through the other hose.

[0003] Due to the diversity of the lesion positions of patients, the placement position of the connecting tube for connecting the human body and the liquid collection bottle will also change according to the usage situation. The current connecting tube generally consists of two pipes connected to the human body equipment and a pipe connected to the liquid collection bottle. The two pipes connected to the human body equipment are respectively responsible for draining and discharging waste gas and waste liquid. Although in most cases, the waste gas and waste liquid discharge pipes do not interfere with each other, when the entire pipe lies flat on the hospital bed, there is a risk that the waste liquid will flow back into the waste gas pipe through the intersection interface. In this case, not only will the patient feel uncomfortable, but there is also an infection risk. Content of the Utility Model

[0004] The purpose of the utility model is to aim at the above deficiencies at present, and provide a connecting tube for a negative pressure aspirator, which can be applicable to various pipe placement situations and at the same time avoid the situation that the waste liquid flows back into the waste gas pipe.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: a connecting tube for a negative pressure aspirator, which includes a three-way joint, a waste liquid drainage tube, a waste gas drainage tube and a discharge tube. A one-way conduction component is arranged at one end of the waste gas drainage tube far away from the human body. One end of the one-way conduction component far away from the waste gas drainage tube, one end of the waste liquid drainage tube far away from the human body and one end of the discharge tube are respectively connected to three interfaces of the three-way joint;

[0006] The one-way conduction component is used to prevent the liquid in the waste liquid drainage tube from flowing back into the waste gas drainage tube through the three-way joint.

[0007] Further, the one-way conduction component includes a first shell, one end of the first shell is detachably sleeved with a second shell, the first shell and the second shell are spliced ​​to form a chamber for gas circulation, the chamber is composed of connecting sections at both ends and a blocking section located between the two connecting sections, the blocking section has a diameter larger than the connecting section, a ball is movably arranged in the blocking section, a sealing ring is arranged on the side of the blocking section close to the exhaust gas drainage pipe, the inner diameter of the sealing ring is smaller than the diameter of the ball, a first compression spring for pushing the ball to be close to the sealing ring is arranged in the blocking section, and a plurality of stepped guide strips for guiding the ball to move toward and away from the sealing ring are also arranged in the blocking section;

[0008] When the first compression spring is in a natural state, the ball is tightly against the sealing ring, and the blocking section and the connecting section close to the exhaust gas drainage pipe are not connected to each other.

[0009] Furthermore, the one-way conducting component is detachably provided with a manual adjustment mechanism for actively driving the ball to move toward and away from the sealing ring;

[0010] The manual adjustment mechanism includes a clamp detachably arranged on the second shell, a magnet magnetically attracted to the ball is slidably arranged on the clamp, a U-shaped guide seat for limiting the movement distance of the magnet toward and away from the sealing ring is also arranged on the clamp, a handle is movably arranged on the side of the U-shaped guide seat away from the magnet, a connecting rod passing through the U-shaped guide seat is arranged between the handle and the magnet, and a slideway for the connecting rod to slide is provided on the U-shaped guide seat.

[0011] Furthermore, a retaining ring is provided on the second shell to assist the installation and positioning of the manual adjustment mechanism. When the clamp contacts the retaining ring and the magnet moves to the extreme position close to the sealing ring, the magnet and the ball are adsorbed. When the clamp contacts the retaining ring and the magnet moves to the extreme position away from the sealing ring, the magnet and the ball are de-adsorbed.

[0012] Furthermore, the U-shaped guide seat is also provided with a clamping assembly for clamping and fixing with the bed frame; the clamping assembly includes an L-shaped frame arranged on the side of the U-shaped guide seat away from the magnet, the L-shaped frame is composed of a transverse section connected to the U-shaped guide seat and a vertical section connected to one end of the transverse section away from the U-shaped guide seat, a movable clamping plate arranged parallel to the vertical section is slidably arranged on the transverse section, a tension spring is arranged between the movable clamping plate and the vertical section, a blocking strip is arranged on the side of the movable clamping plate close to the U-shaped guide seat, and the clamping assembly also includes a second compression spring arranged in the slideway and used to push the connecting rod to move to the side away from the sealing ring;

[0013] When the tension spring is in its natural state, the distance between the movable clamping plate and the vertical section is less than the thickness of the hospital bed frame. When the movable clamping plate and the vertical section are clamped to the hospital bed frame, the stop bar is within the moving range of the handle. When the second compression spring is in its natural state, the distance between the connecting rod and the sealing ring is the largest.

[0014] The beneficial effects of the present utility model are embodied in:

[0015] In the present utility model, by adding a one-way conduction component between the exhaust gas drainage pipe and the three-way joint, and utilizing the one-way conduction characteristic of the one-way conduction component, the gas in the exhaust gas drainage pipe can normally enter the three-way joint. When the liquid in the sewage drainage pipe flows back into the one-way conduction component, it is blocked by the one-way conduction component and thus cannot continue to pass through the one-way conduction component and enter the exhaust gas drainage pipe, thereby being able to avoid the situation of waste liquid flowing back into the exhaust gas pipeline and reducing the infection risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional view of the present utility model;

[0017] Figure 2 is an assembly schematic diagram of the one-way conduction component and the manual adjustment mechanism of the present utility model;

[0018] Figure 3 is a sectional view of the one-way conduction component of the present utility model;

[0019] Figure 4 is an exploded view of the one-way conduction component of the present utility model;

[0020] Figure 5 is a structural view of the manual adjustment mechanism and the clamping component of the present utility model.

[0021] In the figure:

[0022] 1. Three-way joint; 2. Sewage drainage pipe; 3. Exhaust gas drainage pipe; 4. Discharge pipe; 5. One-way conduction component; 51. First housing; 52. Second housing; 53. Ball; 54. Sealing ring; 55. First compression spring; 56. Step-shaped guide bar; 6. Manual adjustment mechanism; 61. Hoop; 62. Magnet; 63. U-shaped guide seat; 64. Handle; 65. Connecting rod; 7. Retaining ring; 8. Clamping component; 81. L-shaped frame; 82. Movable clamping plate; 83. Tension spring; 84. Stop bar; 85. Second compression spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-5 , the present utility model discloses a negative pressure suction connector, which includes a three-way joint 1, a waste liquid drainage pipe 2, an exhaust gas drainage pipe 3 and a discharge pipe 4. One end of the exhaust gas drainage pipe 3 away from the human body is provided with a one-way conduction component 5. One end of the one-way conduction component 5 away from the exhaust gas drainage pipe 3, one end of the waste liquid drainage pipe 2 away from the human body and one end of the discharge pipe 4 are respectively connected to the three interfaces of the three-way joint 1;

[0025] The one-way conduction component 5 is used to prevent the liquid in the waste liquid drainage pipe 2 from flowing back into the exhaust gas drainage pipe 3 through the three-way joint 1.

[0026] In the present utility model, by adding a one-way conduction component 5 between the exhaust gas drainage pipe 3 and the three-way joint 1, and utilizing the one-way conduction characteristic of the one-way conduction component 5, the gas in the exhaust gas drainage pipe 3 can normally enter the three-way joint 1, while when the liquid in the waste liquid drainage pipe 2 flows back into the one-way conduction component 5, it is blocked by the one-way conduction component 5 and thus cannot continue to pass through the one-way conduction component 5 and enter the exhaust gas drainage pipe 3, thereby being able to avoid the situation of waste liquid flowing back into the exhaust gas pipeline and reducing the infection risk.

[0027] In one embodiment, the one-way conduction component 5 includes a first housing 51. One end of the first housing 51 is detachably sleeved with a second housing 52. After the first housing 51 and the second housing 52 are spliced, a chamber for gas flow is formed inside. The chamber consists of connecting sections at both ends and a blocking section located between the two connecting sections. The diameter of the blocking section is larger than that of the connecting section. A ball 53 is movably arranged in the blocking section. A sealing ring 54 is arranged on the side of the blocking section close to the exhaust gas drainage pipe 3. The inner diameter of the sealing ring 54 is smaller than the diameter of the ball 53. A first compression spring 55 for pushing the ball 53 to closely adhere to the sealing ring 54 is arranged in the blocking section. A plurality of stepped guiding strips 56 for guiding the ball 53 to move towards and away from the sealing ring 54 are also arranged in the blocking section;

[0028] When the first compression spring 55 is in a natural state, the ball 53 closely adheres to the sealing ring 54, and the blocking section is not connected to the connecting section on the side close to the exhaust gas drainage pipe 3.

[0029] With such a design, the one-way conduction component 5 is in a normally closed state when not subjected to an external force. Only when the gas in the exhaust gas diversion pipe 3 pushes the ball 53 away from the sealing ring 54 can the gas flow to one side of the tee joint 1 through the gaps between the multiple stepped guide bars 56.

[0030] In one embodiment, a manual adjustment mechanism 6 for actively driving the ball 53 to move closer to and farther away from the sealing ring 54 is detachably provided on the one-way conduction component 5.

[0031] The manual adjustment mechanism 6 includes a hoop 61 detachably arranged on the second housing 52. A magnet 62 magnetically adsorbed to the ball 53 is slidably arranged on the hoop 61. The hoop 61 is also provided with a U-shaped guide seat 63 for limiting the moving distance of the magnet 62 closer to and farther away from the sealing ring 54. A handle 64 is movably arranged on the side of the U-shaped guide seat 63 away from the magnet 62. A connecting rod 65 penetrating the U-shaped guide seat 63 is arranged between the handle 64 and the magnet 62. A sliding groove for the connecting rod 65 to slide is formed on the U-shaped guide seat 63.

[0032] With such a design, medical staff can slide the handle 64 according to needs, drive the magnet 62 to move by using the handle 64, and thus magnetically attract the ball 53 in the one-way conduction component 5 to move together. In this way, when the connecting pipe is used horizontally, the one-way conduction component 5 can work normally, and when the connecting pipe is placed vertically, the blocking effect of the one-way conduction component 5 can be manually released, enabling the negative pressure suction device to suck the exhaust gas even at a lower suction force and improving the operation flexibility.

[0033] In a specific implementation, the magnet 62 is a C-shaped magnetic strip sleeved on the second housing 52 to improve the magnetic attraction force of the magnet 62 on the ball 53.

[0034] In one embodiment, a retaining ring 7 for assisting in the installation and positioning of the manual adjustment mechanism 6 is arranged on the second housing 52. The hoop 61 contacts the retaining ring 7, and when the magnet 62 moves closer to the sealing ring 54 to the limit position, the magnet 62 adsorbs to the ball 53. When the hoop 61 contacts the retaining ring 7 and the magnet 62 moves farther away from the sealing ring 54 to the limit position, the magnet 62 disengages from the adsorption with the ball 53.

[0035] With such a design, it is convenient for nursing staff to install the manual adjustment mechanism 6 on different one-way conduction components 5, improving the installation convenience and accuracy, ensuring that the magnet 62 can accurately adsorb the ball 53, and enabling the manual adjustment mechanism 6 to operate stably during use.

[0036] In one embodiment, a clamping assembly 8 for clamping and fixing to the hospital bed frame is further provided on the U-shaped guide seat 63; the clamping assembly 8 includes an L-shaped frame 81 disposed on the side of the U-shaped guide seat 63 away from the magnet 62. The L-shaped frame 81 is composed of a horizontal section connected to the U-shaped guide seat 63 and a vertical section connected to one end of the horizontal section away from the U-shaped guide seat 63. A movable clamping plate 82 parallel to the vertical section is slidably disposed on the horizontal section. A tension spring 83 is disposed between the movable clamping plate 82 and the vertical section. A stop strip 84 is disposed on the side of the movable clamping plate 82 close to the U-shaped guide seat 63. The stop strip 84 is located at the middle position of the movable clamping plate 82. The clamping assembly 8 further includes a second compression spring 85 disposed in the slideway and used to push the connecting rod 65 to move away from the sealing ring 54.

[0037] When the tension spring 83 is in a natural state, the distance between the movable clamping plate 82 and the vertical section is less than the thickness of the hospital bed frame. When the movable clamping plate 82 and the vertical section are clamped to the hospital bed frame, the stop strip 84 is within the moving range of the handle 64. When the second compression spring 85 is in a natural state, the distance between the connecting rod 65 and the sealing ring 54 is the largest.

[0038] With such a design, before the medical staff needs to operate the manual adjustment mechanism 6, it is necessary to first clamp the clamping assembly 8 to the hospital bed frame, so that the movable clamping plate 82 and the vertical section are respectively located on both sides of the hospital bed frame. Since the distance between the movable clamping plate 82 and the vertical section is less than the thickness of the hospital bed frame when the tension spring 83 is in a natural state, the movable clamping plate 82 will move towards the magnet 62 after being clamped. And before clamping, the magnet 62 is first pushed to adsorb to the ball 53. After clamping is completed, the holding of the handle 64 is released, so that the connecting rod 65 is pushed by the second compression spring 85 to move away from the sealing ring 54 until it is blocked by the stop strip 84. Thereby, the ball 53 can be kept in a separated state from the sealing ring 54, enabling normal gas flow. And when the clamping assembly 8 is loosened and dropped from the hospital bed frame, since the stop strip 84 is pulled back to its original position by the tension spring 83, it no longer blocks the connecting rod 65, so that the connecting rod 65 is continuously pushed by the second compression spring 85. After returning to the initial position, the magnet 62 moves away from the ball 53, thus no longer adsorbing to the ball 53, enabling the one-way conduction assembly 5 to be automatically enabled again, ensuring the use safety.

[0039] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0040] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0041] In addition, "a plurality of" means two or more.

[0042] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of protection of the present utility model.

Claims

1. A negative pressure suction device connecting tube, characterized in that: The invention comprises a three-way joint (1), a waste liquid drainage pipe (2), a waste gas drainage pipe (3) and a discharge pipe (4); the end of the waste gas drainage pipe (3) away from the human body is provided with a one-way conducting component (5); the one end of the one-way conducting component (5) away from the waste gas drainage pipe (3), the one end of the waste liquid drainage pipe (2) away from the human body and one end of the discharge pipe (4) are respectively connected to three interfaces of the three-way joint (1); The one-way conducting component (5) is used to prevent the liquid in the waste liquid drainage pipe (2) from flowing back into the waste gas drainage pipe (3) through the three-way joint (1).

2. A negative pressure suction device connecting tube according to claim 1, characterized in that: The one-way conduction component (5) comprises a first shell (51), one end of which is detachably sleeved with a second shell (52), and a chamber for gas circulation is formed inside the first shell (51) and the second shell (52) after being spliced, the chamber comprising connecting sections at two ends and a blocking section located between the two connecting sections, the blocking section having a diameter greater than that of the connecting section, a ball (53) being movably arranged inside the blocking section, a sealing ring (54) being arranged on a side of the blocking section close to the exhaust gas drainage pipe (3), the inner diameter of the sealing ring (54) being smaller than the diameter of the ball (53), a first compression spring (55) being arranged inside the blocking section for pushing the ball (53) to be close to the sealing ring (54), and a plurality of stepped guide strips (56) being arranged inside the blocking section for guiding the ball (53) to move toward and away from the sealing ring (54); When the first compression spring (55) is in a natural state, the ball (53) is tightly attached to the sealing ring (54), and the blocking section and the connecting section close to the exhaust gas drainage pipe (3) are not connected to each other.

3. A negative pressure suction device connecting tube according to claim 2, characterized in that: The one-way conducting component (5) is detachably provided with a manual adjustment mechanism (6) for actively driving the ball (53) to move toward or away from the sealing ring (54); The manual adjustment mechanism (6) comprises a hoop (61) detachably arranged on the second shell (52); a magnet (62) magnetically attracted to the ball (53) is slidably arranged on the hoop (61); a U-shaped guide seat (63) for limiting the movement distance of the magnet (62) towards and away from the sealing ring (54); a handle (64) is movably arranged on the side of the U-shaped guide seat (63) away from the magnet (62); a connecting rod (65) penetrating the U-shaped guide seat (63) is arranged between the handle (64) and the magnet (62); and a slideway for the connecting rod (65) to slide is provided on the U-shaped guide seat (63).

4. A negative pressure suction device connecting tube according to claim 3, characterized in that: The second housing (52) is provided with a retaining ring (7) for assisting the manual adjustment mechanism (6) in installing and positioning. When the hoop (61) contacts the retaining ring (7) and the magnet (62) moves to an extreme position toward a side close to the sealing ring (54), the magnet (62) and the ball (53) are attracted. When the hoop (61) contacts the retaining ring (7) and the magnet (62) moves to an extreme position toward a side away from the sealing ring (54), the magnet (62) and the ball (53) are disengaged from attraction.

5. The negative pressure suction device connecting tube according to claim 3, characterized in that: The U-shaped guide seat (63) is also provided with a clamping assembly (8) for clamping and fixing with the bed frame; the clamping assembly (8) includes an L-shaped frame (81) arranged on the side of the U-shaped guide seat (63) away from the magnet (62), the L-shaped frame (81) is composed of a transverse section connected to the U-shaped guide seat (63) and a vertical section connected to one end of the transverse section away from the U-shaped guide seat (63), a movable clamping plate (82) arranged parallel to the vertical section is slidably arranged on the transverse section, a tension spring (83) is arranged between the movable clamping plate (82) and the vertical section, and a blocking strip (84) is arranged on the side of the movable clamping plate (82) close to the U-shaped guide seat (63), and the clamping assembly (8) also includes a second compression spring (85) arranged in the slideway and used to push the connecting rod (65) to move to the side away from the sealing ring (54); When the tension spring (83) is in a natural state, the distance between the movable clamp (82) and the vertical section is smaller than the thickness of the bed frame; when the movable clamp (82) and the vertical section are clamped onto the bed frame, the stop bar (84) is within the moving range of the handle (64); and when the second compression spring (85) is in a natural state, the distance between the connecting rod (65) and the sealing ring (54) is at a maximum.

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