Negative pressure suction device

Abstract

The utility model discloses a negative pressure suction device which comprises a device body and branch connector assemblies, the device body comprises a main connector, and a plurality of branch connector assemblies are arranged in the first direction and connected with one another to jointly define a first channel extending in the first direction. Any one of the multiple branch connector assemblies defines a second channel communicating with the first channel and the negative pressure suction pipe, one of the multiple branch connector assemblies defines a third channel communicating with the first channel and the main connector, and the negative pressure suction device meets various negative pressure suction requirements on the premise of low cost and is high in use efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to a negative pressure suction device. Background Art

[0002] Negative pressure suction devices are used to suction sputum, blood, pus and other secretions. Existing negative pressure suction devices have only one connector and can only meet one suction need for one patient. In addition, hospital wards are usually only equipped with a small number of single-connector negative pressure suction devices, which cannot meet various negative pressure suction needs such as sputum suction, drainage tube negative pressure suction, and gastric tube suction in medical activities. There is room for improvement. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a negative pressure suction device that can simultaneously meet multiple negative pressure suction requirements at a low cost and has high efficiency.

[0004] To achieve the above-mentioned purpose, according to an embodiment of the present utility model, a negative pressure suction device is proposed, which includes: a device body, the device body including a main joint; a branch joint assembly, a plurality of the branch joint assemblies are arranged in a first direction and connected to each other, and jointly define a first channel extending along the first direction, any one of the plurality of branch joint assemblies defines a second channel connecting the first channel and the negative pressure suction tube, and one of the plurality of branch joint assemblies defines a third channel connecting the first channel and the main joint.

[0005] According to the negative pressure suction device of the embodiment of the present invention, the negative pressure suction device can meet multiple negative pressure suction requirements at the same time at a low cost and has high use efficiency.

[0006] In addition, the negative pressure suction device according to the above embodiment of the present invention may also have the following additional technical features:

[0007] According to one embodiment of the present invention, the two branch joint assemblies adjacent to each other in the first direction are detachably connected in a mating manner, wherein one of the two branch joint assemblies adjacent to each other in the first direction is provided with a connecting portion, and the other is provided with a mating portion, and the connecting portion is matingly connected with the mating portion.

[0008] According to an embodiment of the present invention, the connecting portion includes a buckle, the matching portion includes a locking protrusion, and the buckle is engaged with the locking protrusion;

[0009] And / or, the connecting portion includes a first magnetic member, the matching portion includes a second magnetic member, and the first magnetic member and the second magnetic member are magnetically matched;

[0010] And / or, the connecting portion includes a plug connector, the mating portion includes a plug-in mating part, and the plug connector and the plug-in mating part are plug-fitted.

[0011] According to one embodiment of the present invention, the connecting portion includes a panel arranged around the branch joint body, the panel and the branch joint body define a slot, the mating portion includes an insert block, part of the structure of the branch joint body is formed as the insert block, and the insert block is plugged into and mated with the slot.

[0012] According to one embodiment of the present invention, the slot includes a socket defined by the enclosure, and flaps are provided on both sides of the socket that can be rotatably set between a first position and a second position. In the first position, the flap is located in the slot and closes the socket. In the second position, the flap is perpendicular to the bottom wall of the slot and opens the socket.

[0013] According to one embodiment of the present invention, a third magnetic component is provided on the inner side of the enclosure, and a fourth magnetic component is provided on the flap. When the flap is in the first position, the third magnetic component and the fourth magnetic component correspond in position and cooperate with each other magnetically.

[0014] According to one embodiment of the present invention, the branch joint assembly includes: a branch joint body, the branch joint body including:

[0015] a housing and a first connecting pipe, wherein the first connecting pipe penetrates the housing in the first direction, and the first connecting pipes of the plurality of branch joint assemblies jointly define the first channel;

[0016] a second connecting pipe, the second connecting pipe extending along the second direction and defining the second channel, one end of the second connecting pipe being connected to the first connecting pipe,

[0017] An air valve, wherein two air valves are arranged on the first connecting pipe and are respectively arranged on both sides of the connection between the first connecting pipe and the second connecting pipe.

[0018] According to one embodiment of the present utility model, the air valve includes a four-way vent head and an insertion rod. The transverse tube body of the four-way vent head is parallel to the first connecting pipe and communicates with the first channel. The longitudinal tube body of the four-way vent head is inserted with an insertion rod that penetrates the shell and is threadedly connected to the shell. A vent hole is provided on the insertion rod. The insertion rod is movably provided on the shell along a third direction between a third position and a fourth position. In the third position, the vent hole is connected to the first channel. In the fourth position, the insertion rod blocks the first channel.

[0019] According to one embodiment of the present invention, two adjacent first connecting pipes are plug-fitted together;

[0020] And / or. One of the multiple branch joint assemblies further includes a third connecting pipe, one end of the third connecting pipe is connected to the first connecting pipe, and the connection between the third connecting pipe and the first connecting pipe is located between the two gas valves.

[0021] According to one embodiment of the present utility model, the branch joint assembly also includes: a controllable negative pressure suction device and an anti-reflux bottle, the other end of the second connecting tube forms a first interface, the controllable negative pressure suction device is detachably connected to the first interface, the controllable negative pressure suction device is connected to the anti-reflux bottle, and the anti-reflux bottle is connected to the negative pressure suction tube.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic structural diagram of a negative pressure suction device according to an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the main structure of the device according to an embodiment of the present utility model;

[0026] Figure 3 is a partial structural diagram of a first branch joint assembly according to an embodiment of the present utility model;

[0027] Figure 4 is a partial structural diagram of a first branch joint assembly according to an embodiment of the present utility model;

[0028] Figure 5 is a cross-sectional view of a first branch joint assembly according to an embodiment of the present utility model;

[0029] Figure 6 is a partial structural diagram of a first branch joint assembly according to an embodiment of the present utility model;

[0030] Figure 7 is a partial structural diagram of a third branch joint assembly according to an embodiment of the present utility model;

[0031] Figure 8 is a partial structural diagram of a third branch joint assembly according to an embodiment of the present utility model;

[0032] Figure 9is a cross-sectional view of a third branch joint assembly according to an embodiment of the present utility model;

[0033] Figure 10 is a partial structural diagram of a third branch joint assembly according to an embodiment of the present utility model;

[0034] Figure 11 is a partial structural diagram of a second branch joint assembly according to an embodiment of the present utility model;

[0035] Figure 12 It is a partial structural diagram of the second branch joint assembly according to an embodiment of the present utility model.

[0036] Reference numerals:

[0037] Negative pressure suction device 1000, first branch joint assembly 101, second branch joint assembly 102, third branch joint assembly 103, connecting arm 104, fastening knob 1041, branch joint body 10, shell 1, first connecting tube 2, second connecting tube 3, first interface 31, third connecting tube 4, air valve 5, four-way ventilation head 51, horizontal tube body 511, longitudinal tube body 512, insertion rod 52, vent 521, enclosure 6, third magnetic component 61, slot 7, socket 71, flap 8, fourth magnetic component 81, buckle 9, latch 91, controllable negative pressure suction device 201, anti-reflux bottle 202, device body 300, main joint 301, negative pressure suction tube 400. DETAILED DESCRIPTION

[0038] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0040] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0041] Negative pressure suction devices are used to suction sputum, blood, pus and other secretions. Existing negative pressure suction devices have only one connector and can only meet one suction need for one patient. In addition, hospital wards are usually only equipped with a small number of single-connector negative pressure suction devices, which cannot meet various negative pressure suction needs such as sputum suction, drainage tube negative pressure suction, and gastric tube suction in medical activities. There is room for improvement.

[0042] To this end, the embodiment of the utility model is based on the existing single-connector negative pressure suction device 1000, and designs a negative pressure suction device 1000 with multiple connectors that can be used for negative pressure suction, so as to meet multiple negative pressure suction needs at the same time at a low cost and improve the use efficiency of the negative pressure suction device 1000.

[0043] The following describes a negative pressure suction device 1000 according to an embodiment of the present invention with reference to the accompanying drawings.

[0044] like Figures 1-12 As shown, the negative pressure suction device 1000 according to an embodiment of the present invention is a wall-type medical negative pressure lead device 1000 that can be connected to multiple connectors. The negative pressure suction device 1000 includes: a device body 300 and a branch connector assembly.

[0045] Among them, the device body 300 includes a main connector 301. The structure of the device body 300 can be designed based on the existing single-connector negative pressure suction device 1000, or the device body 300 can be the existing single-connector negative pressure suction device 1000, and the main connector 301 is the connector of the existing single-connector negative pressure suction device 1000, so as to reduce production and design costs.

[0046] Multiple branch joint assemblies are arranged in a first direction and connected to each other, jointly defining a first channel extending along the first direction. That is, when the multiple branch joint assemblies are connected to each other, the partial passages of the first channels opened on each branch joint assembly will be connected to form a first channel distributed on each branch joint assembly at the same time, and the first channel enables the multiple branch joint assemblies to communicate with each other.

[0047] In order to establish communication between the main connector 301 and each of the negative pressure suction tubes 400, and to generate negative pressure in each of the negative pressure suction tubes 400 for negative pressure suction during operation of the device body 300, communication between the main connector 301 and the first channel must first be established. One of the multiple branch connector assemblies defines a third channel connecting the first channel and the main connector 301. Any one of the multiple branch connector assemblies defines a second channel connecting the first channel and the negative pressure suction tube 400.

[0048] Therefore, during the operation of the device body, negative pressure can be generated at the main connector 301, thereby generating negative pressure in the third channel connected to the main connector 301, and then generating negative pressure in the first channel connected to the third channel, and then generating negative pressure in the second channel connected to the first channel. When negative pressure is generated in the second channel, negative pressure is also generated in the negative pressure suction tube 400 connected to the second channel, and sputum, blood, pus and other secretions from the outside are attracted, and multiple different negative pressure suction needs in the same ward are handled at the same time.

[0049] Thus, the main connector 301 of a device body 300 can be connected to multiple branch connector assemblies, and then connected to multiple negative pressure suction tubes 400. Multiple negative pressure suction tubes 400 can simultaneously meet different negative pressure suction requirements, improve the use efficiency of the negative pressure suction device 1000, and reduce production costs.

[0050] According to the negative pressure suction device 1000 of the embodiment of the present invention, the negative pressure suction device 1000 can meet multiple negative pressure suction requirements at the same time at a low cost and has high efficiency.

[0051] Reference Figure 1 、 Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 、 Figure 11 and Figure 12Two adjacent branch connector assemblies in the first direction are detachably connected. Therefore, during actual use, the number of branch connector assemblies assembled on the device body 300 can be selected according to actual needs. For example, if only three negative pressure suction tubes 400 are required in the ward to meet three different negative pressure suction requirements, three branch connector assemblies can be installed on the device body 300. If the number of required items increases during use, one or more branch connector assemblies can be added to one or both sides of the three branch connector assemblies in the first direction. Similarly, if the number of required items decreases during actual use, the branch connector assemblies other than the one with the third channel can be removed.

[0052] The two adjacent branch joint assemblies are detachably connected, so that each branch joint assembly can be cleaned separately during the cleaning process of the instrument, which is beneficial to reducing the length of the pipeline during the cleaning process and ensuring the cleaning effect of the instrument.

[0053] One of the two adjacent branch joint assemblies in the first direction is provided with a connecting portion, and the other is provided with a mating portion. The connecting portion and the mating portion are mated and connected. Through the mating of the connecting portion and the mating portion, the two adjacent branch joint assemblies in the first direction can be connected together, and the partial passages of the first channel opened in the two adjacent branch joint assemblies are connected to each other to form the first channel or a part of the first channel.

[0054] like Figure 1 、 Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 、 Figure 11 and Figure 12 As shown, the connection method between the connecting part and the matching part can be a snap-fit ​​connection, a magnetic fit connection, a plug-fit connection and a fastener connection, or a combination of multiple fitting connection methods, which is not limited here.

[0055] In some embodiments, the connecting portion includes a buckle 9, and the mating portion includes a protrusion 91. The buckle 9 and the protrusion 91 are engaged with each other to limit the two adjacent branch joint assemblies in the first direction to ensure the stability of the connection between the two adjacent branch joint assemblies.

[0056] In some embodiments, as Figure 1 、 Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 、 Figure 11 and Figure 12 As shown, the buckle 9 includes a buckle made of stainless steel material, and the locking protrusion 91 includes a buckle head made of stainless steel material.

[0057] According to some embodiments of the present invention, the connecting portion includes a plug-in connector, the mating portion includes a plug-in mating component, the plug-in connector and the plug-in mating component are plugged together, and the two adjacent branch joint assemblies are limited in a direction perpendicular to the plug-in direction between the plug-in connector and the plug-in mating component to ensure the stability of the connection between the two adjacent branch joint assemblies.

[0058] When the connecting portion includes both the buckle 9 and the connector, the mating portion includes both the protrusion 91 and the mating plug, and the direction of the connector and the mating plug is the first direction, two adjacent branch connector assemblies can be stably connected as one.

[0059] In some embodiments, the connecting part includes a first magnetic part, the mating part includes a second magnetic part, and the first magnetic part and the second magnetic part are magnetically mated. Thus, through the magnetic mating of the first magnetic part and the second magnetic part, the two adjacent branch joint assemblies can be conveniently and detachably connected. The structure is simple and the connection process is convenient.

[0060] Reference Figure 1 、 Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 、 Figure 11 and Figure 12 The branch joint assembly includes a branch joint body 10, which is formed into a three-dimensional square structure. The connecting portion includes a panel 6 arranged around the branch joint body 10. The panel 6 can be a structure integrally formed with the branch joint body 10. The panel 6 and the branch joint body 10 define a slot 7. The mating portion includes an insert block. Part of the structure of the branch joint body 10 is formed as an insert block, which is plugged into the slot 7.

[0061] In some embodiments, the enclosure 6 and the branch joint body 10 are formed separately and then the enclosure 6 is mounted on the outside of the branch joint body 10. In other words, two adjacent branch joint bodies 10 can be respectively inserted into the two side openings formed by the enclosure 6 to reduce the production cost of the branch joint assembly.

[0062] The cooperation between the slot 7 formed by the enclosure 6 and the branch joint body 10 and the plug block formed by the other branch joint body 10 can stably connect the two adjacent branch joint components into one, and the plug-in cooperation between the two only requires an additional enclosure 6 structure. The setting of the enclosure 6 does not affect the opening of the internal structure of the branch joint body 10, and the enclosure 6 can also seal the pipeline connection on the outside of the pipeline cooperation of the two branch joint components to ensure the sealing of the first channel.

[0063] like Figure 3 、 Figure 7 and Figure 11As shown, the slot 7 includes a socket 71 defined by the enclosure 6. When the slot 7 is not engaged with the plug block, the interior of the slot 7 is susceptible to dust erosion in the external environment. For this reason, flaps 8 are provided on both sides of the socket 71 and can be rotatably set between a first position and a second position. In the first position, the flap 8 is located in the slot 7 and closes the socket 71. In the second position, the flap 8 is perpendicular to the bottom wall of the slot 7 and opens the socket 71.

[0064] Therefore, when the slot 7 is plugged into the plug, the flap 8 can be rotated to the second position. At this time, the flap 8 is perpendicular to the bottom wall of the slot 7 and the socket 71 is open. The socket 71 is open to enable the plug formed by the branch joint body 10 to be inserted into the slot 7. Moreover, since the flap 8 is perpendicular to the bottom wall of the slot 7, that is, the flap 8 and the enclosure 6 are located in the same plane, the flap 8 can cooperate with the wall surface of the branch joint body 10, further realizing the limited connection of the two adjacent branch joint components.

[0065] When the slot 7 does not need to be plugged into the plug block, the flap 8 can be rotated to the first position. At this time, the flap 8 is located in the slot 7 and closes the socket 71, which can prevent external dust from entering the slot 7.

[0066] Reference Figure 3 、 Figure 4 、 Figure 7 and Figure 11 To ensure the stability of the flap 8 when it is in the first position, a third magnetic member 61 is provided on the inner side of the enclosure 6, and a fourth magnetic member 81 is provided on the flap 8. When the flap 8 is in the first position, the third magnetic member 61 and the fourth magnetic member 81 are positioned correspondingly and magnetically engaged with each other. As a result, when the flap 8 is rotated to the first position to seal the socket 71, the flap 8 can be stably positioned, ensuring that the flap 8 effectively seals the slot 7. Furthermore, when the flap 8 is used to seal the socket 71, the third magnetic member 61 and the fourth magnetic member 81 can be directly connected after the flap 8 is moved to the first position, improving convenience during use.

[0067] like Figure 5 、 Figure 6 、 Figure 9 and Figure 10 As shown, the branch joint body 10 includes: a shell 1, a first connecting pipe 2, a second connecting pipe 3 and an air valve 5. The first connecting pipe 2 passes through the shell 1 in the first direction and defines a portion of the pipeline of the first channel. The first connecting pipes 2 of multiple branch joint assemblies jointly define the first channel. When two adjacent branch joint assemblies in the first direction are connected, the corresponding two first connecting pipes 2 are also connected and communicated with each other. After all the first connecting pipes 2 are communicated with each other, they jointly define the first channel.

[0068] The second connecting tube 3 extends along the second direction and defines a second channel. One end of the second connecting tube 3 is connected to the first connecting tube 2 so that the second channel can communicate with the first channel. In some embodiments, the second connecting tube 3 and the first connecting tube 2 are integrally formed.

[0069] Two air valves 5 are provided on the first connecting pipe 2 and are respectively provided on both sides of the connection between the first connecting pipe 2 and the second connecting pipe 3. Thus, the two air valves 5 can respectively close part of the first channel formed by the first connecting pipe 2 on both sides of the connection between the second connecting pipe 3 and the first connecting pipe 2, so that the first channel can form a channel with both ends closed and the middle connected when the air valves 5 of the branch joint assemblies on both sides in the first direction are closed, thereby controlling the opening and closing of each branch joint assembly.

[0070] Reference Figure 5 、 Figure 6 、 Figure 9 and Figure 10 The air valve 5 includes a four-way air vent head 51 and an insertion rod 52. The horizontal tube body 511 of the four-way air vent head 51 is parallel to the first connecting pipe 2 and communicates with the first channel. The first connecting pipe 2 is sleeved on the outside of the horizontal tube body 511 of the four-way air vent head 51. The cooperation between the first connecting pipe 2 and the four-way air vent head 51 can ensure the sealing of the first channel while inserting the insertion rod 52 that can block the first channel into the first channel. The longitudinal tube body 512 of the four-way air vent head 51 is plugged with the insertion rod 52 that penetrates the shell 1 and is threadedly connected to the shell 1. A vent hole 521 is opened on the insertion rod 52. The insertion rod 52 is movably provided on the shell 1 between a third position and a fourth position along the third direction. In the third position, the vent hole 521 is connected to the first channel. In the fourth position, the insertion rod 52 blocks the first channel.

[0071] Therefore, when the negative pressure suction device 1000 is in use, the opening and closing of each branch joint assembly can be controlled as needed, and the opening and closing of each branch joint can be controlled by the air valve 5 so that part of the pipeline of the first channel defined by the first connecting pipe 2 of the branch joint assembly that needs to be opened can be connected to the main joint 301.

[0072] Among them, the opening and closing of the control valve 5 can be achieved by rotating the plug rod 52. Due to the threaded fit between the plug rod 52 and the shell 1, during the rotation of the plug rod 52, the plug rod 52 moves in a straight line under the guidance of the longitudinal tube body 512 of the four-way ventilation head 51. When the plug rod 52 moves to the fourth position, the plug rod 52 is inserted into the vent 521, and the plug rod 52 body can block the channel in the first channel. When the plug rod 52 is rotated to the third position, the vent 521 is set corresponding to the first channel and forms a part of the first channel. The air flow can flow through the vent 521.

[0073] Reference Figure 1 、 Figure 5 、 Figure 6、 Figure 9 and Figure 10 The two adjacent first connecting tubes 2 are plugged in and matched to ensure that the first connecting tubes 2 of the two interconnected first branch assemblies can be connected to each other, and ensure that the connection is sealed to avoid fluid leakage and ensure the negative pressure suction effect of the negative pressure suction device 1000.

[0074] In some embodiments, a transition pipe is provided between two adjacent first connecting pipes 2 in the first direction, and the two sides of the transition pipe are respectively inserted into the tube bodies of the two first connecting pipes 2, or one of the first connecting pipes 2 is interference fit with the transition pipe, and the transition pipe can be inserted into the tube body of the other first connecting pipe 2 and plug-fitted with it.

[0075] One of the multiple branch joint assemblies further includes a third connecting pipe 4 . Specifically, the multiple branch joint assemblies include a first branch joint assembly 101 . The first branch joint assembly 101 includes the third connecting pipe 4 , and the remaining branch joint assemblies do not include the third connecting pipe 4 .

[0076] That is to say, one of the multiple branch joint assemblies having the third connecting pipe 4 is the first branch joint assembly 101. The first branch joint assembly 101 serves as the main branch joint assembly. During the installation of the branch joint assembly, regardless of whether the demand for branch joint assemblies is 1 or more, the first branch joint assembly 101 needs to be installed on the device body first, and the third connecting pipe 4 needs to be connected to the main joint 301. The remaining branch joint assemblies can be increased or decreased as needed, and the first branch joint assembly 101 cannot be disassembled or separated from the device body 300 during use.

[0077] One end of the third connecting tube 4 is connected to the first connecting tube 2, and the other end is connected to the main connector 301. The connection between the third connecting tube 4 and the first connecting tube 2 is located between the two air valves 5, so that the first branch connector assembly 101 can define a first channel with both ends closed, ensuring that the first branch connector assembly 101 can independently perform negative pressure suction.

[0078] The branch joint assembly also includes: a controllable negative pressure suction device 201 and an anti-reflux bottle 202. The other end of the second connecting tube 3 forms a first interface 31. The first interface 31 is detachably connected to the controllable negative pressure suction device 201. The controllable negative pressure suction device 201 is connected to the anti-reflux bottle 202. The anti-reflux bottle 202 is connected to the negative pressure suction tube 400 to achieve suction control and liquid collection during the negative pressure suction process to avoid liquid reflux.

[0079] A specific embodiment of the negative pressure suction device 1000 of the present invention will be described below with reference to the accompanying drawings.

[0080] like Figures 1-12As shown, the negative pressure suction device 1000 according to an embodiment of the present invention includes: a device body 300 and a first branch joint assembly 101 , two second branch joint assemblies 102 and two third branch joint assemblies 103 .

[0081] The device body 300 includes a main joint 301, which is connected to the first branch joint assembly 101, two second branch joint assemblies 102 are arranged on the left side of the first branch joint assembly 101, and two third branch joint assemblies 103 are arranged on the right side of the first branch joint assembly 101. The first branch joint assembly 101, the two second branch joint assemblies 102 and the two third branch joint assemblies 103 jointly define a first channel connected to the main joint 301.

[0082] The first branch connector assembly 101, the two second branch connector assemblies 102, and the two third branch connector assemblies 103 each include a branch connector body 10, a connecting arm 104, a tightening knob 1041, a controllable negative pressure aspirator 201, and an anti-reflux bottle 202. Connecting arms 104 are provided above and below the branch connector body 10, respectively. These connective arms 104 engage with the upper and lower surfaces of the device body 300, and the branch connector assembly is secured to the device body 300 via tightening knobs 1041.

[0083] Among them, the branch joint body 10 of the first branch joint assembly 101 has a first interface 31, a second interface and two connection interfaces located on both sides of the first direction. The first interface 31 is detachably connected to a controllable negative pressure suction device 201, the controllable negative pressure suction device 201 is connected to the anti-reflux bottle 202, the anti-reflux bottle 202 is connected to the negative pressure suction tube 400, and the second interface is connected to the main joint 301.

[0084] The branch joint body 10 of the second branch joint assembly 102 and the third branch joint assembly 103 has a first interface 31 and two connection interfaces located on both sides of the first direction. The first interface 31 is detachably connected to a controllable negative pressure suction device 201, and the controllable negative pressure suction device 201 is connected to the anti-reflux bottle 202, and the anti-reflux bottle 202 is connected to the negative pressure suction tube 400.

[0085] The branch joint body 10 of the first branch joint assembly 101 includes a housing 1, a first connecting pipe 2, a second connecting pipe 3, a third connecting pipe 4 and two air valves 5. The first connecting pipe 2, the second connecting pipe 3 and the third connecting pipe 4 are integrally formed.

[0086] The first connecting pipe 2 penetrates the housing 1 in the first direction and defines a portion of the first channel. Both ends of the first connecting pipe 2 are formed as connection interfaces.

[0087] The second connecting pipe 3 extends along the second direction and defines a second channel. One end of the second connecting pipe 3 is connected to the first connecting pipe 2 so that the second channel can communicate with the first channel. The other end of the second connecting pipe 3 forms a first interface 31 .

[0088] The third connecting tube 4 extends along the second direction and defines a third channel. The third connecting tube 4 and the second connecting tube 3 extend in the same direction. One end of the third connecting tube 4 is connected to the first connecting tube 2 so that the third channel can communicate with the first channel. The other end of the second connecting tube 3 forms a second interface.

[0089] Two air valves 5 are provided on the first connecting pipe 2 and are respectively provided on both sides of the connection between the first connecting pipe 2 and the second connecting pipe 3 and the third connecting pipe 4 .

[0090] The air valve 5 includes a four-way air vent head 51 and an insertion rod 52. The horizontal tube body 511 of the four-way air vent head 51 is parallel to the first connecting pipe 2 and communicates with the first channel. The first connecting pipe 2 is sleeved on the outside of the horizontal tube body 511 of the four-way air vent head 51. The longitudinal tube body 512 of the four-way air vent head 51 is inserted with an insertion rod 52 that penetrates the shell 1 and is threadedly connected to the shell 1. A vent hole 521 is provided on the insertion rod 52. The insertion rod 52 is movably provided on the shell 1 between a third position and a fourth position along the third direction. In the third position, the vent hole 521 is connected to the first channel. In the fourth position, the insertion rod 52 blocks the first channel.

[0091] The opening and closing of the control air valve 5 can be achieved by rotating the plug rod 52. Due to the threaded fit between the plug rod 52 and the shell 1, during the rotation of the plug rod 52, the plug rod 52 moves in a straight line under the guidance of the longitudinal tube body 512 of the four-way vent head 51. When the plug rod 52 moves to the fourth position, the plug rod 52 is inserted into the vent hole 521, and the plug rod 52 body can block the channel in the first channel. When the plug rod 52 is rotated to the third position, the vent hole 521 is set corresponding to the first channel and forms a part of the first channel. Air flow can flow through the vent hole 521.

[0092] The branch joint body 10 of the second branch joint assembly 102 and the branch joint body 10 of the third branch joint assembly 103 respectively include: a shell 1, a first connecting pipe 2, a second connecting pipe 3 and two air valves 5. The first connecting pipe 2 and the second connecting pipe 3 are integrally formed.

[0093] The first connecting pipe 2 penetrates the housing 1 in the first direction and defines a portion of the first channel. Both ends of the first connecting pipe 2 are formed as connection interfaces.

[0094] The second connecting pipe 3 extends along the second direction and defines a second channel. One end of the second connecting pipe 3 is connected to the first connecting pipe 2 so that the second channel can communicate with the first channel. The other end of the second connecting pipe 3 forms a first interface 31 .

[0095] Two air valves 5 are provided on the first connecting pipe 2 and are respectively provided on both sides of the connection between the first connecting pipe 2 and the second connecting pipe 3 .

[0096] The air valve 5 includes a four-way air vent head 51 and an insertion rod 52. The horizontal tube body 511 of the four-way air vent head 51 is parallel to the first connecting pipe 2 and communicates with the first channel. The first connecting pipe 2 is sleeved on the outside of the horizontal tube body 511 of the four-way air vent head 51. The longitudinal tube body 512 of the four-way air vent head 51 is inserted with an insertion rod 52 that penetrates the shell 1 and is threadedly connected to the shell 1. A vent hole 521 is provided on the insertion rod 52. The insertion rod 52 is movably provided on the shell 1 between a third position and a fourth position along the third direction. In the third position, the vent hole 521 is connected to the first channel. In the fourth position, the insertion rod 52 blocks the first channel.

[0097] The opening and closing of the control air valve 5 can be achieved by rotating the plug rod 52. Due to the threaded fit between the plug rod 52 and the shell 1, during the rotation of the plug rod 52, the plug rod 52 moves in a straight line under the guidance of the longitudinal tube body 512 of the four-way vent head 51. When the plug rod 52 moves to the fourth position, the plug rod 52 is inserted into the vent hole 521, and the plug rod 52 body can block the channel in the first channel. When the plug rod 52 is rotated to the third position, the vent hole 521 is set corresponding to the first channel and forms a part of the first channel. Air flow can flow through the vent hole 521.

[0098] The first direction is Figure 1 In the left-right direction, the right side of one of the two second branch joint components 102 is detachably connected to the left side of the first branch joint component 101. The left side is detachably connected to the right side of the other second branch joint component 102.

[0099] The left side of one of the two third branch joint components 103 is detachably connected to the right side of the first branch joint component 101 , and the right side is detachably connected to the left side of the other third branch joint component 103 .

[0100] The branch joint body 10 of the first branch joint assembly 101 is provided with connecting parts on the left and right sides respectively, the branch joint body 10 of the second branch joint assembly 102 is provided with a matching part on the right side and a connecting part on the left side, and the branch joint body 10 of the third branch joint assembly 103 is provided with a matching part on the left side and a connecting part on the right side.

[0101] The connecting portion and the matching portion are connected in a matching manner, thereby realizing a detachable matching connection between the various branch connector assemblies.

[0102] Among them, the connecting part includes a panel 6 arranged around the branch joint body 10. The panel 6 can be a structure integrally formed with the branch joint body 10. The panel 6 and the branch joint body 10 define a slot 7. The mating part includes an insert block. Part of the structure of the branch joint body 10 is formed as an insert block, and the insert block is plugged into the slot 7.

[0103] The connecting portion further includes a buckle 9 , and the matching portion further includes a locking protrusion 91 . The buckle 9 is provided on the upper and lower sides of the enclosure 6 , and the locking protrusion 91 is provided on the corresponding branch joint body 10 .

[0104] The slot 7 includes a socket 71 defined by the enclosure 6. When the slot 7 is not engaged with the plug block, the interior of the slot 7 is susceptible to dust erosion in the external environment. For this reason, flaps 8 are provided on both sides of the socket 71 and can be rotatably set between a first position and a second position. In the first position, the flap 8 is located in the slot 7 and closes the socket 71. In the second position, the flap 8 is perpendicular to the bottom wall of the slot 7 and opens the socket 71.

[0105] Therefore, when the slot 7 is plugged into the plug, the flap 8 can be rotated to the second position. At this time, the flap 8 is perpendicular to the bottom wall of the slot 7 and the socket 71 is open. The socket 71 is open to enable the plug formed by the branch joint body 10 to be inserted into the slot 7. Moreover, since the flap 8 is perpendicular to the bottom wall of the slot 7, that is, the flap 8 and the enclosure 6 are located in the same plane, the flap 8 can cooperate with the wall surface of the branch joint body 10, further realizing the limited connection of the two adjacent branch joint components.

[0106] When the slot 7 does not need to be plugged into the plug block, the flap 8 can be rotated to the first position. At this time, the flap 8 is located in the slot 7 and closes the socket 71, which can prevent external dust from entering the slot 7.

[0107] To ensure the stability of the flap 8 when in its first position, a third magnetic member 61 is provided on the inner side of the enclosure 6, and a fourth magnetic member 81 is provided on the flap 8. When the flap 8 is in its first position, the third magnetic member 61 and the fourth magnetic member 81 are positioned in correspondence and magnetically engaged with each other. As a result, when the flap 8 is rotated to its first position to seal the socket 71, the flap 8 remains stable, ensuring that the flap 8 effectively seals the slot 7. Furthermore, when the flap 8 is used to seal the socket 71, the third magnetic member 61 and the fourth magnetic member 81 can be directly connected by attraction after the flap 8 is moved to its first position, improving convenience during use.

[0108] When the branch joint assembly is connected, the two adjacent first connecting pipes 2 in the first direction are connected and communicated, and a transition pipe is provided between the two. The two sides of the transition pipe are respectively inserted into the tube bodies of the two first connecting pipes 2, or one of the first connecting pipes 2 is interference fit with the transition pipe, and the transition pipe can be inserted into the tube body of the other first connecting pipe 2 and plugged into it.

[0109] During use, the number of branch joint assemblies opened can be controlled by the air valve 5. For example, when the two air valves 5 of the first branch joint assembly 101 are closed, only one first branch joint assembly 101 is opened, and the other branch joint assemblies are closed.

[0110] For example, when the left air valve 5 of the second branch joint assembly 102 located on the far left is closed and the right air valve 5 is opened, the right air valve 5 of the third branch joint assembly 103 located on the far right is closed and the left air valve 5 is opened, and all other air valves 5 are opened, all branch joint assemblies provided on the device body 300 are opened.

[0111] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0112] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A negative pressure suction device, characterized in that: include: a device body, the device body including a main connector; A branch joint assembly, wherein a plurality of the branch joint assemblies are arranged in a first direction and connected to each other, jointly defining a first channel extending along the first direction, any one of the plurality of branch joint assemblies defines a second channel connecting the first channel and the negative pressure suction tube, and one of the plurality of branch joint assemblies defines a third channel connecting the first channel and the main joint.

2. The negative pressure suction device according to claim 1, characterized in that: Two adjacent branch joint assemblies in a first direction are detachably connected. Among them, one of the two adjacent branch joint assemblies in the first direction is provided with a connecting portion, and the other is provided with a matching portion, and the connecting portion is matched and connected with the matching portion.

3. The negative pressure suction device according to claim 2, characterized in that: The connecting portion includes a buckle, the matching portion includes a cam, and the buckle is engaged with the cam; And / or, the connecting portion includes a first magnetic member, the matching portion includes a second magnetic member, and the first magnetic member and the second magnetic member are magnetically matched; And / or, the connecting portion includes a plug connector, the mating portion includes a plug-in mating part, and the plug connector and the plug-in mating part are plug-fitted.

4. The negative pressure suction device according to claim 2, characterized in that: The connecting portion includes a panel surrounding the branch joint body, the panel and the branch joint body defining a slot, the matching portion includes an insert block, a portion of the structure of the branch joint body forms the insert block, and the insert block is plugged into and matched with the slot.

5. The negative pressure suction device according to claim 4, characterized in that: The slot includes a socket defined by the enclosure, and flaps are provided on both sides of the socket that can be rotatably set between a first position and a second position. In the first position, the flap is located in the slot and closes the socket. In the second position, the flap is perpendicular to the bottom wall of the slot and opens the socket.

6. The negative pressure suction device according to claim 5, characterized in that: A third magnetic component is provided on the inner side of the enclosure, and a fourth magnetic component is provided on the flap. When the flap is in the first position, the third magnetic component and the fourth magnetic component correspond in position and cooperate with each other magnetically.

7. The negative pressure suction device according to claim 1, characterized in that: The branch joint assembly includes: a branch joint body, and the branch joint body includes: a housing and a first connecting pipe, wherein the first connecting pipe penetrates the housing in the first direction, and the first connecting pipes of the plurality of branch joint assemblies jointly define the first channel; a second connecting pipe, the second connecting pipe extending along the second direction and defining the second channel, one end of the second connecting pipe being connected to the first connecting pipe, An air valve, wherein two air valves are arranged on the first connecting pipe and are respectively arranged on both sides of the connection between the first connecting pipe and the second connecting pipe.

8. The negative pressure suction device according to claim 7, characterized in that: The air valve includes a four-way vent head and an insertion rod. The transverse tube body of the four-way vent head is parallel to the first connecting pipe and communicates with the first channel. The longitudinal tube body of the four-way vent head is connected with an insertion rod that penetrates the shell and is threadedly connected to the shell. A vent hole is provided on the insertion rod. The insertion rod is movably arranged on the shell along a third direction between a third position and a fourth position. In the third position, the vent hole is connected to the first channel. In the fourth position, the insertion rod blocks the first channel.

9. The negative pressure suction device according to claim 7, characterized in that: Two adjacent first connecting pipes are plugged into each other; And / or. One of the multiple branch joint assemblies further includes a third connecting pipe, one end of the third connecting pipe is connected to the first connecting pipe, and the connection between the third connecting pipe and the first connecting pipe is located between the two gas valves.

10. The negative pressure suction device according to claim 7, characterized in that: The branch joint assembly also includes: a controllable negative pressure suction device and an anti-reflux bottle. The other end of the second connecting tube forms a first interface. The controllable negative pressure suction device is detachably connected to the first interface. The controllable negative pressure suction device is connected to the anti-reflux bottle, and the anti-reflux bottle is connected to the negative pressure suction tube.

Images