One-way closed joint and straight joint thereof

Abstract

The one-way closed joint has a conducting state and a cut-off state and comprises the straight joint, a male joint and a gasket, the straight joint comprises a mounting cavity and a pipe sticking hole which are separated by a partition wall, the partition wall is provided with a valve hole for connecting the mounting cavity with the pipe sticking hole, and a wing part is arranged on the peripheral wall of the straight joint in a protruding mode; the gasket is arranged on the bottom surface of the mounting cavity and can deform, the male joint is inserted and fixed in the mounting cavity, the male joint comprises a threaded cavity and a liquid medicine cavity, in the conducting state, a gap is formed between the edge area of the gasket and the bottom surface of the cavity, the valve hole is opened, and the liquid medicine cavity is communicated with the pipe sticking hole; in the cut-off state, the edge area of the gasket is attached to the cavity bottom face, the valve hole is closed, and the liquid medicine cavity is disconnected from the pipe adhering hole. And by arranging the wing part, the male joint and the female joint can be separated conveniently, the operation efficiency is improved, and the operation intensity is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, especially to a one-way sealed joint capable of connecting a medicine liquid end and a patient end and a straight-through thereof. BACKGROUND

[0002] At present, a luer joint is used in clinic to connect with a patient end indwelling needle joint, the luer joint is a male luer joint and a female luer joint respectively, and the male and female luer joints are not easy to loosen after assembly and can avoid liquid leakage after being pressed. However, the luer joint often cannot be screwed open when medical staff operate. Therefore, it is necessary to provide a new luer joint. SUMMARY

[0003] The utility model provides a new one-way sealed joint and a straight-through thereof.

[0004] The utility model provides a one-way sealed joint, has the on state and the cut-off state, including straight-through, male joint and gasket, the straight-through includes the installation cavity and the pipe hole of sticking of being separated by the partition, the partition has the valve hole of connecting the installation cavity with the pipe hole of sticking, the outer peripheral wall of straight-through is provided with the wing part, the gasket is located the cavity bottom surface of the installation cavity and can produce deformation, the male joint is inserted and is fixed in the installation cavity, the male joint includes the screw cavity of can cooperate with the female joint and the liquid medicine cavity that can supply liquid medicine to pass, in the on state, the edge area between the gasket and the cavity bottom surface forms the gap, the valve hole opens, makes the liquid medicine cavity with the pipe hole of sticking is connected, in the cut-off state, the edge area of gasket is pasted in the cavity bottom surface, the valve hole is closed, makes the liquid medicine cavity with the pipe hole of sticking is disconnected.

[0005] In some embodiments, at least two limiting walls are protruded from the cavity wall surface and the cavity bottom surface of the installation cavity, and the gasket is arranged between the limiting walls.

[0006] In some embodiments, the limiting walls are uniformly distributed on the cavity wall surface around the central axis of the straight-through.

[0007] In some embodiments, the straight-through and the male joint are ultrasonically welded together.

[0008] In some embodiments, a first welding surface is arranged on the side of the straight-through facing the male joint, a second welding surface is arranged on the side of the male joint facing the straight-through, the first welding surface comprises two first surfaces intersecting perpendicularly, the second welding surface comprises two second surfaces intersecting perpendicularly, and each first surface is ultrasonically welded with the corresponding second surface.

[0009] In some embodiments, the wing portion has at least two, and the width of the wing portion is not more than 20mm.

[0010] In some embodiments, the male connector has a force applying column facing the bottom of the through passage, the liquid cavity penetrates through the force applying column, and the force applying column presses the middle area of the gasket.

[0011] A through passage of a one-way sealing connector, comprising a mounting cavity and a pipe sticking hole separated by a partition wall, the partition wall has a valve hole connecting the mounting cavity and the pipe sticking hole, and the outer wall of the through passage has a wing portion.

[0012] In some embodiments, the width of the wing portion is not more than 20mm, the number of the wing portion is two, and the two wing portions are symmetrically arranged about the central axis of the through passage.

[0013] In some embodiments, at least two limiting walls are protruded from the wall surface and the bottom surface of the mounting cavity, and the gasket is clamped between the limiting walls.

[0014] The utility model discloses beneficial effects are, through setting up wing portion, thereby facilitating the separation of male connector and female connector, improve the operation efficiency, reduce the operation strength. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three-dimensional structure schematic diagram of the through passage of the one-way sealing connector of the embodiment;

[0016] Figure 2 It is the bottom view schematic diagram of the through passage of the one-way sealing connector of the embodiment;

[0017] Figure 3 It is the sectional view schematic diagram of the one-way sealing connector of the embodiment;

[0018] Figure 4 It is the schematic diagram of the connection of the one-way sealing connector, the upper infusion tube and the female connector of the embodiment. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0020] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0021] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0022] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on that the ordinary skilled in the art can realize, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0024] For example, Figures 1 to 4As shown, the one-way sealing connector 100 of the present embodiment comprises a straight-through 1, a gasket 3 and a male connector 2. The straight-through 1 has a fluid passage extending in a first direction A, which comprises a mounting cavity 11 and a tube sticking hole 13 separated by a partition wall 12, and the mounting cavity 11 and the tube sticking hole 13 are connected by a valve hole 121 extending through the partition wall 12. The mounting cavity 11 of the fluid passage can be matched with the male connector 2, and the tube sticking hole 13 can be matched with the upper infusion tube 5. The outer peripheral wall 17 of the straight-through 1 is provided with a wing portion 16 protruding therefrom, and the wing portion 16 extends in the first direction A. The gasket 3 is installed on the cavity bottom surface 112 of the mounting cavity 11 of the straight-through 1, and the gasket 3 is elastic and can be deformed, which can make the one-way sealing connector 100 conductive when liquid flows in the first direction A, and can make the one-way sealing connector 100 cut off when liquid flows in a second direction B opposite to the first direction A. The valve hole 121 is formed by extending through the partition wall 12 in the second direction B from the cavity bottom surface 112, the middle region of the gasket 3 can block the valve hole 121, and the edge region of the gasket 3 can be pressed on the cavity bottom surface 112. When the one-way sealing connector 100 is conductive, the edge region of the gasket 3 is raised to form a gap between the edge region and the cavity bottom surface 112 for the medicinal liquid to flow through, the gap connects the mounting cavity 11 and the tube sticking hole 13, and the valve hole 121 is open; when the one-way sealing connector 100 is cut off, the edge region of the gasket 3 is tightly attached to the cavity bottom surface 112, so that the mounting cavity 11 and the tube sticking hole 13 are disconnected, and the valve hole 121 is closed. The male connector 2 comprises a medicinal liquid cavity 21 located at the middle position and a threaded cavity 22 surrounding the medicinal liquid cavity 21, both of which extend in the first direction A, the threaded cavity 22 and the medicinal liquid cavity 21 are separated, the threaded cavity 22 is provided with a screw thread 23, and the screw thread 23 can be threadedly connected with a female connector 4. The bottom of the male connector 2 facing the straight-through 1 has a pressing column 25 extending towards the straight-through 1, the pressing column 25 extends in the second direction B, the pressing column 25 is located at the central position of the bottom of the male connector 2 and can press the middle region of the gasket 3, and the medicinal liquid cavity 21 extends through the pressing column 25 in the second direction B.

[0025] When assembling, the lower infusion tube is connected with the female connector 4, the female connector 4 is threadedly connected with the male connector 2, and the upper infusion tube 5 is adhesively fixed to the tube-adhesive hole 13 of the straight-through 1. The sequential connection of the upper infusion tube 5, the straight-through 1, the male connector 2, the female connector 4 and the lower infusion tube enables the drug liquid to flow from the drug liquid end to the patient end, and further enables the drug liquid to be input into the patient's body through the indwelling needle. The first direction A is the direction from the drug liquid end to the patient end, and the second direction B is the direction from the patient end to the drug liquid end. Assuming that the liquid flows in the second direction B, under the action of the liquid pressure, the edge region of the gasket 3 tightly abuts the cavity bottom surface 112 of the straight-through 1, so that the one-way sealing connector 100 remains in the closed state, and the blood at the patient end cannot flow back to the drug liquid end through the pipeline. When the drug liquid flows in the first direction A, under the action of the drug liquid pressure, the edge region of the gasket 3 deforms and rises to separate from the cavity bottom surface 112 of the straight-through 1, so that a gap for the drug liquid to flow through is formed between the edge region and the cavity bottom surface 112, the one-way sealing connector 100 is opened, the straight-through 1 and the male connector 2 are communicated, and the drug liquid can flow into the male connector 2 through the straight-through 1.

[0026] When it is necessary to separate the male connector 2 and the female connector 4, the medical staff holds the wing portion 16 of the straight-through 1 and applies a torque, so that the male connector 2 and the female connector 4 can be rotated and separated. By providing the wing portion 16 with a certain width, the separation of the male connector 2 and the female connector 4 is facilitated, the operation efficiency is improved, and the operation strength is reduced.

[0027] In some embodiments, the cavity wall surface 111 of the straight-through 1 is convexly provided with a plurality of limiting walls 14. Each limiting wall 14 is a strip-shaped body extending in the first direction A, and each limiting wall 14 is circumferentially and interval ly distributed around the central axis of the straight-through 1. Each limiting wall 14 can form a ring around the central axis. Each limiting wall 14 can extend from the cavity bottom surface 112 in the first direction A. The central axis of the straight-through 1 is parallel to the first direction A and the second direction B. The straight-through 1 and the male connector 2 can be coaxial with the central axis. When installing, the gasket 3 is attached to the cavity bottom surface 112 of the straight-through 1 and is clamped between each limiting wall 14. By providing the limiting wall 14, the offset of the gasket 3 in the high-speed flow of the drug liquid can be effectively prevented. Specifically, the limiting walls 14 can be even, and the limiting walls 14 have pairs. Two limiting walls 14 of each pair can be symmetrically arranged about the central axis of the straight-through 1. The number of limiting walls 14 can be not less than eight, so that the offset of the gasket 3 can be effectively prevented.

[0028] In some embodiments, the wing 16 is in the shape of a square plate, protruding from the outer peripheral wall 17 of the through-pass 1. The wing 16 has a length in a first direction A and a width in the radial direction of the through-pass 1. The length of the wing 16 may be greater than its width. There may be two wings 16, which may be symmetrically arranged about the central axis of the through-pass 1 to facilitate hand operation by medical personnel. The wings 16 may also be arc-shaped or other ergonomic shapes. For ease of hand operation, the width of the wing 16 generally does not exceed 20 mm. To facilitate hand operation at different angles, the number of wings 16 may also be at least three. The shape and size of each wing 16 may be the same or different.

[0029] In some embodiments, male connector 2 is a Luer male connector and female connector 4 is a Luer female connector. The thread 23 of male connector 2 may have a 6% taper, or other tapers that facilitate the connection between male connector 2 and female connector 4.

[0030] In some embodiments, the through-hole 1 includes an installation cavity 11 and a pipe-adhesive hole 13 separated by a partition wall 12. The pipe-adhesive hole 13 and the installation cavity 11 are connected by a valve hole 121 penetrating the partition wall 12. The gasket 3 can control the opening and closing of the valve hole 121. The inner diameter of the installation cavity 11 can be larger than the inner diameter of the valve hole 121. When the one-way sealing joint 100 is in the conducting state, the installation cavity 11, the valve hole 121, and the pipe-adhesive hole 13 are connected; when the one-way sealing joint 100 is in the closed state, the installation cavity 11 and the pipe-adhesive hole 13 are disconnected.

[0031] In some embodiments, the straight connector 1 and the male connector 2 are ultrasonically welded together. The straight connector 1 has a first welding surface 15 on the side facing the male connector 2, and the first welding surface 15 includes an annular surface. The male connector 2 has a second welding surface 24 on the side facing the straight connector 1. The first welding surface 15 and the second welding surface 24 can be planarly attached and ultrasonically welded together to achieve the welding and fixation of the straight connector 1 and the Luer male connector 2. To enhance the connection stability of the straight connector 1 and the male connector 2, the first welding surface 15 may include mutually perpendicular and intersecting first surfaces. Correspondingly, the second welding surface 24 may include two mutually perpendicular and intersecting second surfaces, and the two first surfaces are ultrasonically welded to their corresponding second surfaces.

[0032] like Figures 1 to 4 As shown, this embodiment provides a straight-through 1 of a one-way sealed connector, which can be connected to the upper infusion tube 5 and the male connector 2. The straight-through 1 includes an installation cavity 11 and a tube-adhesive hole 13 separated by a partition wall 12. The partition wall 12 has a valve hole 121 connecting the installation cavity 11 and the tube-adhesive hole 13. The outer peripheral wall 17 of the straight-through 1 is provided with a wing 16 protruding radially along the straight-through 1. The width of the wing 16 can not exceed 20 mm. There can be two wings 16, and the two wings 16 can be symmetrically arranged about the central axis of the straight-through 1.

[0033] The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A one-way sealed joint having an on-state and an off-state, characterized by, The through connector includes a mounting cavity and a pipe sticking hole separated by a partition wall, the partition wall has a valve hole connecting the mounting cavity and the pipe sticking hole, the outer peripheral wall of the through connector is provided with a wing part, the gasket is arranged on the cavity bottom surface of the mounting cavity and can be deformed, the male connector is inserted and fixed in the mounting cavity, the male connector includes a threaded cavity capable of cooperating with a female connector and a liquid medicine cavity capable of passing liquid medicine, in the on state, a gap is formed between the edge area of the gasket and the cavity bottom surface, the valve hole is opened, and the liquid medicine cavity and the pipe sticking hole are in communication; in the off state, the edge area of the gasket is attached to the cavity bottom surface, the valve hole is closed, and the liquid medicine cavity and the pipe sticking hole are disconnected.

2. The one-way sealed joint of claim 1, wherein, At least two limiting walls are protruded from the cavity wall surface of the mounting cavity and the cavity bottom surface, and the gasket is arranged between the limiting walls.

3. The one-way sealed joint of claim 2, wherein, The limiting walls are uniformly distributed around the central axis of the through connector on the cavity wall surface.

4. The one-way sealed joint of claim 1, wherein, The through connector and the male connector are ultrasonically welded together.

5. The one-way sealed joint of claim 4, wherein, One side of the through connector facing the male connector is provided with a first welding surface, one side of the male connector facing the through connector is provided with a second welding surface, the first welding surface includes two first surfaces intersecting perpendicularly, the second welding surface includes two second surfaces intersecting perpendicularly, and each first surface and its corresponding second surface are ultrasonically welded to each other.

6. The one-way sealed joint of claim 1, wherein, The wing part has at least two, and the width of the wing part is not more than 20mm.

7. The one-way sealed joint of claim 1, wherein The bottom of the male connector facing the through connector is provided with a force applying column, the liquid medicine cavity penetrates through the force applying column, and the force applying column presses the middle area of the gasket.

8. A straight through of a one-way sealed joint, characterized in that, The through connector includes a mounting cavity and a pipe sticking hole separated by a partition wall, the partition wall has a valve hole connecting the mounting cavity and the pipe sticking hole, the outer peripheral wall of the through connector is provided with a wing part.

9. A pass-through for a one-way closure joint according to claim 8, wherein, The width of the wing part is not more than 20mm, the number of the wing part is two, and the two wing parts are symmetrically arranged about the central axis of the through connector.

10. Straight through of a one-way sealed joint according to claim 8 or 9, characterized in that, At least two limiting walls are protruded from the cavity wall surface of the mounting cavity and the cavity bottom surface of the mounting cavity, and the two limiting walls are used for clamping the gasket.

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