Combination connectors and suction and filling line assemblies

Abstract

The present invention discloses a combination joint and a liquid suction and injection pipeline assembly. The combination joint includes a joint body and a transfer tube. The joint body includes a liquid inlet section and a liquid outlet section that are connected to each other. The liquid inlet section is used to connect to an external liquid inlet pipeline. A liquid outlet channel that runs through the liquid inlet section and the liquid outlet section is formed in the joint body. A limiting space is formed on the outer surface of the joint body along the extension direction of the liquid outlet channel. The transfer tube includes a first opening end, a second opening end and a positioning block. The positioning block is convexly arranged on the inner wall of the transfer tube. The second opening end is used to connect to an external liquid outlet pipeline. The liquid outlet channel is connected to the liquid outlet pipeline. The liquid outlet section is inserted from the first opening end. The positioning block is limitedly connected in the limiting space and can rotate along the circumference of the joint body. The combination joint provided by the present invention has a simple assembly structure, a convenient and concise assembly method, and can avoid the phenomenon of pipeline twisting and knotting, thereby reducing damage to the pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a combined joint and a liquid suction and injection pipeline component. Background Art

[0002] In clinical medicine, connectors are usually used to connect infusion sets and infusion tubes to facilitate infusion. Currently, connectors on the market are usually assembled by ultrasonic welding or bonding, and the entire connector is fixed. After the two ends of the connector are connected to the pipeline, during use, the pipeline connected to one end of the connector will rotate with the rotation of the other end, making the pipeline easy to twist and twist. Summary of the invention

[0003] The main purpose of the present invention is to provide a combined joint, aiming to realize a rotatable combined joint.

[0004] To achieve the above object, the combined joint proposed by the present invention comprises:

[0005] A joint body, the joint body comprising a liquid inlet section and a liquid outlet section which are connected to each other, the liquid inlet section being used to connect to an external liquid inlet pipeline, a liquid outlet channel penetrating the liquid inlet section and the liquid outlet section being formed in the joint body, and a limiting space being formed on the outer surface of the joint body in the extension direction of the liquid outlet channel; and

[0006] The adapter tube comprises a first opening end, a second opening end and a positioning block, the positioning block is protruding from the inner wall of the adapter tube, the second opening end is used to connect to an external liquid outlet pipeline, and the liquid outlet channel is connected to the liquid outlet pipeline; the liquid outlet section is inserted from the first opening end, the positioning block is limitedly connected in the limit space, and can rotate along the circumferential direction of the joint body.

[0007] In an embodiment of the present invention, a limiting protrusion is provided on the outer surface of the joint body, and the limiting space is formed between the limiting protrusion and the liquid inlet section.

[0008] In one embodiment of the present invention, a step surface is formed at the connection between the liquid inlet section and the liquid outlet section, the limiting space is formed between the limiting protrusion and the step surface, the first opening end is movably abutted against the step surface, and the positioning block is movably abutted against the side of the limiting protrusion facing the step surface.

[0009] In one embodiment of the present invention, the joint body also includes an extension plate, which extends along the edge of the step surface in a direction away from the liquid outlet section. The liquid inlet section is placed in the space enclosed by the extension plate and forms a accommodating space together with the extension plate.

[0010] In an embodiment of the present invention, the positioning block comprises:

[0011] a main body block connected to the inner wall surface of the adapter tube; and

[0012] The clamping part, the guiding part is connected to a side of the main body block away from the inner wall surface of the adapter tube, and the clamping part is provided with a guiding surface facing the first opening end.

[0013] In one embodiment of the present invention, the main body block is arranged in a ring shape, and the clamping portion is arranged in a ring shape;

[0014] Alternatively, the main body block is arranged in a ring shape, the number of the clamping parts is multiple, the multiple clamping parts are arranged at intervals, and the multiple clamping parts are all provided with the guide surface.

[0015] In an embodiment of the present invention, the positioning block further comprises a guide plate, which is arranged on a side of the clamping portion facing the second opening end and is spaced apart from the main body block;

[0016] And / or, a guide slope is formed on one side of the limiting protrusion facing the second opening end.

[0017] In an embodiment of the present invention, the joint body further comprises a limiting boss protruding from the outer surface of the joint body, and the limiting boss is located in the limiting space;

[0018] And / or, the second open end is provided with a thread for connecting to a liquid outlet pipeline.

[0019] In an embodiment of the present invention, the outer surface of the joint body is provided with a plurality of anti-slip ribs; and / or the outer surface of the adapter tube is provided with a plurality of anti-slip ribs.

[0020] The present invention also provides a liquid suction and injection pipeline assembly, comprising a liquid inlet pipeline, a liquid outlet pipeline and a combined joint as described in any one of the above items.

[0021] The combined joint provided by the technical solution of the present invention is used to connect a liquid inlet pipeline and a liquid outlet pipeline. The liquid inlet section of the combined joint is used to connect with an external liquid inlet pipeline, and the external liquid outlet pipeline is connected to the combined joint through the second opening end. When connected, the liquid outlet section is inserted into the liquid outlet pipeline to ensure that the liquid flowing out of the liquid inlet pipeline can flow into the liquid outlet pipeline through the liquid outlet channel running through the liquid inlet section and the liquid outlet section. The combined joint is assembled into one piece by inserting the liquid outlet section of the joint body into the adapter tube from the first opening end so as to limit the connection of the positioning block in the limit space formed by the joint body. The positioning block of the assembled combined joint can rotate along the circumferential direction of the joint body, so that the adapter tube can rotate relative to the joint body. When the liquid outlet pipeline connected to the second opening end rotates, the positioning block can rotate along the circumferential direction of the joint body so that the adapter tube rotates relative to the joint body. At this time, the liquid inlet pipeline connected to the liquid inlet section of the joint body is fixed, thereby preventing the liquid inlet pipeline and the liquid outlet pipeline from being tangled and twisted, and reducing damage to the liquid inlet pipeline and the liquid outlet pipeline. In addition, the combined joint provided by the present application also has the advantages of simple assembly method and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 It is a structural schematic diagram of an embodiment of a combined joint of the present invention;

[0024] Figure 2 It is a schematic cross-sectional structure diagram of an embodiment of a combined joint of the present invention;

[0025] Figure 3 This is a schematic structural diagram of a joint body in an embodiment of a combined joint of the present invention;

[0026] Figure 4 It is a schematic structural diagram of a transition tube in an embodiment of a combined joint of the present invention.

[0027] Description of Figure Numbers:

[0028]

[0029]

[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The present invention provides a combined joint 100, referring to Figures 1 to 4In one embodiment of the combined joint 100 provided by the present invention, the combined joint 100 includes a joint body 10 and a transfer tube 30. The joint body 10 includes a liquid inlet section 11 and a liquid outlet section 13 that are connected to each other. The liquid inlet section 11 is used to connect to an external liquid inlet pipeline. A liquid outlet channel 10a that runs through the liquid inlet section 11 and the liquid outlet section 13 is formed in the joint body 10. The outer surface of the joint body 10 is formed with a limiting space 10b along the extension direction of the liquid outlet channel 10a. The transfer tube 30 includes a first open end 30a, a second open end 30b and a positioning block 31. The positioning block 31 is convexly arranged on the inner wall of the transfer tube 30. The second open end 30b is used to connect to an external liquid outlet pipeline. The liquid outlet channel 10a is connected to the liquid outlet pipeline. The liquid outlet section 13 is inserted from the first open end 30a. The positioning block 31 is limitedly connected to the limiting space 10b and can rotate along the circumferential direction of the joint body 10.

[0036] The combined joint 100 provided by the technical solution of the present invention is used to connect a liquid inlet pipeline and a liquid outlet pipeline. The liquid inlet section 11 of the combined joint 100 is used to connect with an external liquid inlet pipeline. The external liquid outlet pipeline is connected to the combined joint 100 through the second open end 30b. When connected, the liquid outlet section 13 is inserted into the liquid outlet pipeline to ensure that the liquid flowing out of the liquid inlet pipeline can flow into the liquid outlet pipeline through the liquid outlet channel 10a that runs through the liquid inlet section 11 and the liquid outlet section 13. The combined joint 100 inserts the liquid outlet section 11 of the joint body 10 into the adapter tube 30 from the first open end 30a, so that the positioning block 31 is limitedly connected to the limiting space 10b formed by the joint body 10, thereby assembling the joint body 10 and the adapter tube 30 as a whole. The positioning block 31 of the assembled combined joint 100 can rotate along the circumferential direction of the joint body 10, so that the adapter tube 30 can rotate relative to the joint body 10. When the liquid outlet pipeline connected to the second open end 30b rotates, the positioning block 31 can rotate along the circumference of the joint body 10, so that the adapter tube 30 rotates relative to the joint body 10. At this time, the liquid inlet pipeline connected to the liquid inlet section 11 of the joint body 10 is fixed, thereby avoiding the phenomenon of tangling of the liquid inlet pipeline and the liquid outlet pipeline, and reducing the damage of the liquid inlet pipeline and the liquid outlet pipeline. In addition, the combined joint 100 provided by the present application also has the advantages of simple assembly method and low manufacturing cost.

[0037] See also Figure 2 and Figure 3In one embodiment of the present invention, a limiting protrusion 15 is provided on the outer surface of the joint body 10, and a limiting space 10b is formed between the limiting protrusion 15 and the liquid inlet section 11. The liquid outlet section 13 is inserted from the first opening end 30a, and when the limiting protrusion 15 passes through the position of the positioning block 31, the positioning block 31 can be limitedly connected in the limiting space 10b. The limiting protrusion 15 is used to abut against the positioning block 31 to limit the position of the positioning block 31, thereby ensuring that when the positioning block 31 rotates relative to the joint body 10, the joint body 10 will not slide out of the first opening end 30a.

[0038] In order to limit the range of motion of the positioning block 31, see Figure 2 and Figure 3 , a step surface 10c can be further formed at the connection between the liquid inlet section 11 and the liquid outlet section 13, a limiting space 10b is formed between the limiting protrusion 15 and the step surface 10c, the first opening end 30a is movably abutted against the step surface 10c, and the positioning block 31 is movably abutted against the side of the limiting protrusion 15 facing the step surface 10c. The design of the step surface 10c ensures that when the joint body 10 is inserted into the adapter tube 30, the joint body 10 will not directly pass through the adapter tube 30 from the second opening end 30b. At the same time, the step surface 10c can also cooperate with the limiting boss 19 to limit the range of movement of the positioning block 31 in the extension direction of the liquid outlet channel 10a, so as to prevent the joint body 10 and the adapter tube 30 from being separated.

[0039] In order to make the first opening end 30a of the adapter tube 30 better abut against the step surface 10c, an abutment plate 37 extending along the edge of the first opening end 30a away from the adapter tube 30 can also be provided at the first opening end 30a of the adapter tube 30. The abutment plate 37 abuts against the step surface 10c on the side facing away from the second opening end 30b to increase the abutment area between the second opening end 30b and the step surface 10c, thereby making the assembly of the joint body 10 and the adapter tube 30 more secure.

[0040] In one embodiment of the present invention, see Figures 1 to 3 The joint body 10 further includes an extension plate 17, which extends along the edge of the step surface 10c in a direction away from the liquid outlet section 13. The liquid inlet section 11 is placed in a space enclosed by the extension plate 17, and is enclosed with the extension plate 17 to form a receiving space. When the external liquid inlet pipeline is connected to the liquid inlet section 11, the external liquid inlet pipeline can be connected to the receiving space enclosed by the extension plate 17 and the liquid inlet section 11. At this time, the end of the liquid inlet section 11 away from the liquid outlet section 13 is placed in the external liquid inlet pipeline. The design of the extension plate 17 makes the external liquid inlet pipeline and the liquid inlet section 11 more tightly connected, which can prevent leakage when the liquid is introduced from the external liquid inlet pipeline into the liquid inlet section 11.

[0041] See also Figure 2In one embodiment of the present invention, the positioning block 31 includes a main body block 311 and a clamping portion 313. The main body block 311 is connected to the inner wall surface of the adapter tube 30. The clamping portion 313 is connected to the side of the main body block 311 away from the inner wall surface of the adapter tube 30, and the clamping portion 313 is provided with a guide surface 313a facing the first opening end 30a. The guide surface 313a facilitates the insertion of the joint body 10 into the adapter tube 30, and can also play a guiding role when the limiting protrusion 15 passes through the positioning block 31. At the same time, connecting the clamping portion 313 to the side of the main body block 311 away from the inner wall surface of the adapter tube 30 can further reduce the internal space of the adapter tube 30, so as to ensure that when the joint body 10 and the adapter tube 30 move relative to each other, the positioning block 31 can better move and abut against the side of the limiting protrusion 15 facing the step surface 10c, thereby ensuring that the joint body 10 will not slide out from the first opening end 30a.

[0042] In order to make the connection between the positioning block 31 and the adapter tube 30 more firmly, the main body block 311 can be further arranged in an annular shape, and the clamping portion 313 can also be arranged in an annular shape. The annular arrangement of the clamping portion 313 can better guide the joint body 10 to be inserted into the adapter tube 30. At the same time, the annular arrangement of the clamping portion 313 can also increase the contact area between the positioning block 31 and the limiting protrusion 15, so that the positioning block 31 can be more stably contacted with the limiting protrusion 15, and the joint body 10 can be prevented from slipping out of the first opening end 30a.

[0043] The main body block 311 can also be arranged in an annular shape, the number of the clamping parts 313 is multiple, the multiple clamping parts 313 are arranged at intervals, and the multiple clamping parts 313 are all provided with a guide surface 313a. The clamping parts 313 are arranged in multiples and the multiple clamping parts 313 are arranged at intervals, so that when the joint body 10 is inserted into the adapter tube 30 and the limiting protrusion 15 squeezes the clamping part 313, the clamping part 313 is more likely to deform, which is convenient for assembly. It can also save materials and save production costs.

[0044] It is understandable that the main body block 311 can also be set in any shape according to the shape of the adapter tube 30, and the clamping portion 313 can also be set in any other manner, which will not be further elaborated here.

[0045] See also Figure 2In one embodiment of the present invention, the positioning block 31 further includes a guide plate 315, which is disposed on the side of the clamping portion 313 facing the second open end 30b and is spaced apart from the main body block 311. The guide plate 315 can make the positioning block 31 better contact with the limiting protrusion 15, so that when the joint body 10 and the adapter tube 30 are relatively rotated or pulled, the limiting protrusion 15 is not easy to pass through the positioning block 31 from the direction of the liquid inlet section, so that the connection between the joint body 10 and the adapter tube 30 is more firmly established. The guide plate 315 is spaced apart from the main body block 311, so that when the joint body 10 is inserted into the adapter tube 30 and the limiting protrusion 15 squeezes the guide plate 315, the guide plate 315 is more likely to be deformed, thereby preventing the guide plate 315 from being damaged due to being squeezed by the limiting protrusion 15.

[0046] See also Figure 2 In one embodiment of the present invention, a guide slope 15a is formed on one side of the limiting protrusion 15 facing the second open end 30b. The guide slope 15a allows the limiting protrusion 15 to gradually increase the deformation degree of the positioning block 31 when the joint body 10 is inserted into the adapter tube 30, so that the limiting protrusion 15 can pass through the positioning block 31 and the positioning block 31 is not easily damaged. When the joint body 10 is inserted into the adapter tube 30, the guide slope 15a can also fit the guide surface 313a for insertion and cooperate with the guide surface 313a for guidance.

[0047] See also Figure 2 and Figure 3 In order to reduce the shaking amplitude when the joint body 10 and the adapter tube 30 move relative to each other, the joint body 10 can also include a limiting boss 19 protruding from the outer surface of the joint body 10, and the limiting boss 19 is located in the limiting space 10b to prevent the joint body 10 and the adapter tube 30 from being damaged due to excessive shaking amplitude.

[0048] In one embodiment of the present invention, see Figure 2 and Figure 4 , a thread 33 for connecting the liquid outlet pipeline can also be provided at the second open end 30b. The thread 33 can be an internal thread or an external thread, and can be specifically arranged according to the structure of the connection end of the liquid outlet pipeline connected to the thread. The threaded connection method can make the liquid outlet pipeline and the second open end 30b more tightly and firmly connected, so that the liquid outlet pipeline is not easy to fall off from the second open end 30b, and it is not easy to leak. The threaded connection method is also simple and convenient to operate.

[0049] See also Figures 1 to 4In one embodiment of the present invention, the outer surface of the joint body 10 is further provided with a plurality of anti-skid ribs 35. The outer surface of the adapter tube 30 may also be provided with a plurality of anti-skid ribs 35. The anti-skid ribs 35 may be provided along the extension direction of the joint body 10 or the adapter tube 30. The anti-skid ribs 35 facilitate holding the joint body 10 and the adapter tube 30 during assembly, and can play an anti-skid role to prevent the joint body 10 and the adapter tube 30 from slipping out of the hand during assembly.

[0050] The present invention also proposes a liquid suction and injection pipeline assembly, which includes a liquid inlet pipeline, a liquid outlet pipeline and a combination joint 100. The specific structure of the combination joint 100 refers to the above-mentioned embodiment. Since the present liquid suction and injection pipeline assembly adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Among them, the liquid inlet pipeline is connected to the liquid inlet section 11 of the combination joint 100, and the liquid outlet pipeline is connected to the second open end 30b of the combination joint 100. When the liquid outlet pipeline is connected to the combination joint 100, the plug-in part is inserted into the liquid outlet pipeline. The liquid introduced into the combination joint 100 from the liquid inlet pipeline can flow into the liquid outlet pipeline through the liquid outlet channel 10a.

[0051] The liquid inlet pipeline can be fixedly connected to a liquid supply device (the liquid supply device can be a syringe, which is used to store and provide liquid medicine or nutrient solution and input it into the liquid inlet pipeline), and the liquid outlet pipeline can be used to be connected to a living body to be infused (the living body can be a human or animal to be infused with liquid medicine or nutrient solution). When the living body moves and drives the liquid outlet pipeline to rotate, the adapter tube 30 will rotate with the liquid outlet pipeline to rotate relative to the connector body 10. At this time, the liquid inlet pipeline connected to the connector body 10 will not rotate or twist, which can ensure that the liquid medicine or nutrient solution can be normally input into the liquid outlet pipeline.

[0052] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A combined joint, characterized in that: include: A joint body, the joint body comprising a liquid inlet section and a liquid outlet section which are connected to each other, the liquid inlet section being used to connect to an external liquid inlet pipeline, a liquid outlet channel penetrating the liquid inlet section and the liquid outlet section being formed in the joint body, and a limiting space being formed on the outer surface of the joint body in the extension direction of the liquid outlet channel; and The adapter tube comprises a first opening end, a second opening end and a positioning block, the positioning block is convexly arranged on the inner wall of the adapter tube, the second opening end is used to connect to an external liquid outlet pipeline, and the liquid outlet channel is communicated with the liquid outlet pipeline; the liquid outlet section is inserted from the first opening end, the positioning block is limitedly connected in the limited space, and can rotate along the circumferential direction of the joint body; The outer surface of the joint body is provided with a limiting protrusion, and the limiting space is formed between the limiting protrusion and the liquid inlet section; A step surface is formed at the connection between the liquid inlet section and the liquid outlet section, the limiting space is formed between the limiting protrusion and the step surface, the first opening end movably abuts against the step surface, and the positioning block movably abuts against a side of the limiting protrusion facing the step surface; When the movement of the living body drives the liquid outlet pipeline to rotate, the adapter tube will rotate with the liquid outlet pipeline to rotate relative to the joint body. At this time, the liquid inlet pipeline connected to the joint body will not rotate or twist, ensuring that the medicine or nutrient solution is normally input into the liquid outlet pipeline; Wherein, the outer surface of the joint body is provided with a plurality of anti-slip ribs; and / or, the outer surface of the adapter tube is provided with a plurality of anti-slip ribs; The anti-slip ribs are arranged along the extension direction of the joint body or the adapter tube.

2. The combined joint according to claim 1, characterized in that: The joint body also includes an extension plate, which extends along the edge of the step surface in a direction away from the liquid outlet section. The liquid inlet section is placed in a space enclosed by the extension plate and encloses a containing space with the extension plate.

3. The combined joint according to claim 1 or 2, characterized in that: The positioning block comprises: a main body block connected to the inner wall surface of the adapter tube; and A clamping portion is connected to a side of the main body block that is away from the inner wall surface of the adapter tube, and the clamping portion is provided with a guide surface facing the first opening end.

4. The combined joint according to claim 3, characterized in that: The main body block is arranged in a ring shape, and the clamping portion is arranged in a ring shape; Alternatively, the main body block is arranged in a ring shape, the number of the clamping parts is multiple, the multiple clamping parts are arranged at intervals, and the multiple clamping parts are all provided with the guide surface.

5. The combined joint according to claim 3, characterized in that: The positioning block further comprises a guide plate, which is arranged on one side of the clamping portion facing the second opening end and is spaced apart from the main body block; And / or, a guide slope is formed on one side of the limiting protrusion facing the second opening end.

6. The combined joint according to claim 1 or 2, characterized in that: The joint body further comprises a limiting boss protruding from the outer surface of the joint body, and the limiting boss is located in the limiting space; And / or, the second open end is provided with a thread for connecting to a liquid outlet pipeline.

7. A liquid suction and injection pipeline assembly, characterized in that: It comprises a liquid inlet pipeline, a liquid outlet pipeline and a combined joint as claimed in any one of claims 1 to 6.

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