阅读说明：本技术 重复性使用防滴液密闭接头 (Drip-proof closed joint for repeated use ) 是由 陈志秋 韦乃武 于 2020-12-31 设计创作，主要内容包括：本申请公开了一种重复性使用防滴液密闭接头,包括公接头、直通、母接头及防滴液垫片,所述公接头具有上安装腔、下安装腔及分隔壁,所述分隔壁具有上表面、下表面及上下贯穿所述上、下表面的连接腔,所述连接腔连接所述上安装腔和所述下安装腔,所述连接腔在所述下端面形成阀口,所述直通具有上下贯穿的第一贯孔,所述直通固定装入所述下安装腔,所述母接头与所述公接头可拆卸连接,所述母接头具有上下贯穿的第二贯孔,所述母接头的下部是与所述弹性片对应的施力柱,所述防滴液垫片设置在所述直通的上部,所述防滴液垫片具有弹性片。公接头和母接头分离时,弹性片密封阀口,从而在更换管路时,药液不会泄露,从而能够实现接头的重复性使用。(The application discloses sealed joint of drip proof liquid of repeated use, including male joint, straight-through, female joint and drip proof gasket, the male joint has last installation cavity, lower installation cavity and divider wall, the divider wall has upper surface, lower surface and runs through from top to bottom the connection chamber of upper and lower surface, the connection chamber is connected go up the installation cavity with installation cavity down, the connection chamber is in the terminal surface forms the valve port down, straight-through has the first through hole that runs through from top to bottom, straight-through fixed dress is in lower installation cavity, the female joint with the male joint can be dismantled and be connected, the female joint has the second through hole that runs through from top to bottom, the lower part of female joint be with the application of force post that the flexure strip corresponds, drip proof gasket sets up straight-through upper portion, drip proof gasket has the flexure strip. When male joint and female joint separation, the valve port is sealed to the flexure strip to when changing the pipeline, the liquid medicine can not reveal, thereby can realize the used repeatedly who connects.)

1. A repeatedly-used anti-drip closed joint is characterized by comprising a male joint, a through hole, a female joint and an anti-drip gasket, wherein the male joint is provided with an upper mounting cavity, a lower mounting cavity and a partition wall for separating the upper mounting cavity from the lower mounting cavity, the partition wall is provided with an upper surface, a lower surface and a connecting cavity which vertically penetrates through the upper surface and the lower surface, the connecting cavity is connected with the upper mounting cavity and the lower mounting cavity, the connecting cavity forms a valve port on the lower end face, the through hole is provided with a first through hole which vertically penetrates through, the through hole is fixedly arranged in the lower mounting cavity, the female joint is detachably connected with the male joint, the female joint is provided with a second through hole which vertically penetrates through, the lower part of the female joint is provided with a force application column corresponding to an elastic sheet, the anti-drip gasket is arranged on the upper part of the through hole, and the anti-drip gasket is provided, the male connector and the female connector have an assembly state and a disassembly state, in the assembly state, the female connector is arranged in the upper mounting cavity, the force application column is pressed against the elastic sheet, the elastic sheet is deformed to open the valve port, and the first through hole, the lower mounting cavity and the second through hole are communicated; in the disassembly state, the female joint is separated from the upper installation cavity, and the elastic sheet is restored to deform to block the valve port, so that the second through hole is disconnected from the lower installation cavity.

2. The hermetic connector according to claim 1, wherein the second through hole penetrates the force applying pillar up and down, the force applying pillar has a notch groove, the notch groove is penetrated through the second through hole, the force applying pillar is matched with the connection cavity, in the assembled state, the force applying pillar extends downward into the connection cavity, and the lower installation cavity is communicated with the second through hole through the notch groove.

3. The hermetic connector of claim 1 further comprising a sealing gasket secured within the upper mounting chamber and abutting the upper surface of the dividing wall, the sealing gasket surrounding the force application post.

4. The hermetic connector of claim 3 further comprising a retaining ring secured within the upper mounting cavity, the sealing gasket secured within the upper mounting cavity by the retaining ring.

5. The hermetic joint as claimed in claim 3 wherein the force application post has a sealing end face that compresses against the sealing gasket.

6. The sealing joint as claimed in claim 1, wherein the female joint further comprises a matching cylinder located at the upper portion and a threaded column located at the middle portion, the second through hole sequentially penetrates through the matching cylinder, the threaded column and the force application column from top to bottom, and the threaded column is in threaded connection with the upper mounting cavity.

7. The hermetic connector according to claim 6 wherein the threaded post and the upper mounting cavity each have a double thread.

8. The hermetic connector according to claim 1, wherein the feedthrough includes a feedthrough body and a seat body, the first through hole penetrates the feedthrough body up and down, the seat body includes a base and a center post, the center post is supported above the feedthrough body by the base, a gap for passing the liquid medicine is formed between the center post and the feedthrough body, and the first through hole communicates with the lower mounting cavity through the gap.

9. The hermetic joint as claimed in claim 8 wherein the drip resistant gasket further comprises a base post having a groove, the central post cooperating with the groove.

10. The hermetic joint as claimed in claim 8 wherein the force application post has an outer diameter greater than the outer diameter of the base post and less than the outer diameter of the resilient tab.

Technical Field

The invention relates to the field of medical instruments, in particular to a closed joint capable of being connected with an infusion tube.

Background

The existing airtight joint can be used for connecting an infusion tube, when a second pipeline is replaced, the pipeline still has residual pressure after one-time injection, the liquid medicine outflow phenomenon appears when the pipeline is disassembled, the risk of waste and cross infection is caused, the outflow liquid medicine is contrast medium, and when air is met, the liquid medicine can volatilize and crystallize in a short time to damage the airtight joint. Therefore, there is a need for a sealing joint that can be used repeatedly.

Disclosure of Invention

The invention provides a novel repeatedly-used closed joint.

The invention provides a repeatedly-used anti-drip closed joint which comprises a male joint, a through joint, a female joint and an anti-drip gasket, wherein the male joint is provided with an upper mounting cavity, a lower mounting cavity and a partition wall for separating the upper mounting cavity from the lower mounting cavity, the partition wall is provided with an upper surface, a lower surface and a connecting cavity which vertically penetrates through the upper surface and the lower surface, the connecting cavity is connected with the upper mounting cavity and the lower mounting cavity, the connecting cavity forms a valve port on the lower end surface, the through joint is provided with a first through hole which vertically penetrates through, the through joint is fixedly installed in the lower mounting cavity, the female joint is detachably connected with the male joint, the female joint is provided with a second through hole which vertically penetrates through, the lower part of the female joint is provided with a force application column corresponding to an elastic sheet, the anti-drip gasket is arranged on the upper part of the through joint, and the anti-drip, the male connector and the female connector have an assembly state and a disassembly state, in the assembly state, the female connector is arranged in the upper mounting cavity, the force application column is pressed against the elastic sheet, the elastic sheet is deformed to open the valve port, and the first through hole, the lower mounting cavity and the second through hole are communicated; in the disassembly state, the female joint is separated from the upper installation cavity, and the elastic sheet is restored to deform to block the valve port, so that the second through hole is disconnected from the lower installation cavity. The first through hole and the second through hole of the female joint can be connected with the infusion tube. In the assembled state, the elastic sheet deforms to open the valve port, i.e., a gap is formed between the elastic sheet and the lower surface of the partition wall, and the liquid medicine can flow into the second through hole through the gap.

The second through hole penetrates through the force application column up and down, the force application column is provided with a notch groove, the notch groove is communicated with the second through hole, the force application column is matched with the connecting cavity, in the assembling state, the force application column extends into the connecting cavity downwards, and the lower installation cavity is communicated with the second through hole through the notch groove. The urging column may be a vertically penetrating cylindrical body, and may have a plurality of notch grooves. The notch grooves can be uniformly distributed.

The sealing joint also comprises a sealing gasket which is fixed in the upper mounting cavity and clings to the upper surface of the partition wall, and the sealing gasket is sleeved on the force application column. The sealing gasket has elasticity.

The sealing joint further comprises a fixing ring, the fixing ring is fixed in the upper mounting cavity, and the sealing gasket is fixed in the upper mounting cavity by the fixing ring.

The force application column is provided with a sealing end face, and the sealing end face tightly presses the sealing gasket.

The female joint further comprises a matching cylinder positioned on the upper portion and a threaded column positioned in the middle portion, the second through hole penetrates through the matching cylinder, the threaded column and the force application column from top to bottom in sequence, and the threaded column is in threaded connection with the upper installation cavity. The screw thread post can be equipped with the external screw thread, goes up the installation cavity and can correspond and be equipped with the internal thread.

The threaded column and the upper mounting cavity are provided with double threads.

The through structure comprises a through body and a seat body, the first through hole penetrates through the through body up and down, the seat body comprises a base and a center column, the center column is supported above the through body through the base, a gap for medicine liquid to pass through is formed between the center column and the through body, and the first through hole is communicated with the lower mounting cavity through the gap.

The drip-proof gasket further comprises a base column, the base column is provided with a groove, and the central column is matched with the groove.

The outer diameter of the force application column is larger than that of the base column and smaller than that of the elastic piece.

The invention has the beneficial effects that: when male joint and female joint separation, the valve port is sealed to the flexure strip to when changing the pipeline, the liquid medicine can not reveal, thereby can realize the used repeatedly who connects, reduced patient's burden.

Drawings

FIG. 1 is an exploded perspective view of a reusable drip resistant closure according to the present embodiment;

fig. 2 is a schematic sectional view of the female joint of the present embodiment;

fig. 3 is a schematic sectional view of the male connector of the present embodiment (with a seal gasket and a retainer ring secured);

fig. 4 is a perspective view of a through passage of the present embodiment;

FIG. 5 is a schematic cross-sectional view of the present embodiment with the male and female connectors in a disassembled state;

FIG. 6 is a schematic cross-sectional view of the present embodiment with the male and female connectors in an assembled state;

FIG. 7 is an enlarged partial schematic view of FIG. 6 at point P;

FIG. 8 is a schematic view showing the flow direction of the liquid medicine when the male and female connectors are disassembled;

FIG. 9 is a schematic view showing the flow of the liquid medicine when the male and female connectors are assembled.

Detailed Description

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1 to 9, a reusable drip-proof sealing connector comprises a male connector 1, a through connector 2, a female connector 3 and a drip-proof gasket 4. The male connector 1 has an upper mounting cavity 11, a lower mounting cavity 12 and a partition wall 13 separating the upper and lower mounting cavities 11, 12, the partition wall 13 has an upper surface 14 as the bottom surface of the upper mounting cavity 11 and a lower surface 15 as the bottom surface of the lower mounting cavity 12, a connecting cavity 16 is formed by vertically penetrating the upper surface 14 and the lower surface 15, the upper mounting cavity 11 is communicated with the lower mounting cavity 12 through the connecting cavity 16, and the connecting cavity 16 forms a valve port 17 on the lower surface 15. The through-passage 2 is fixed to the lower mounting cavity 12 of the male connector and has a first through-hole 21 passing through vertically along the axial direction thereof, and the lower infusion tube 7 can be fixed to the first through-hole 21. The female connector 3 is arranged in the upper mounting cavity 11 of the male connector and is detachably connected with the male connector 1, and is provided with a second through hole 31 which vertically penetrates along the axial direction of the male connector, and the upper part of the second through hole 31 can be connected with the upper infusion tube 8. The drip-proof gasket 4 has an elastic piece 41, and the elastic piece 41 is capable of being deformed when an external force is applied thereto and recovering the deformation after the external force is removed. The lower portion of the female joint 3 has an urging column 32 corresponding to the elastic piece 41.

The female connector 3 is detachably connected to the male connector 1, that is, the female connector 3 and the male connector 1 have an assembled state and a disassembled state. In an assembled state, the female connector 31 is installed in the upper installation cavity 1 of the male connector, the force application column 32 of the female connector 3 presses the elastic sheet 41 to deform the elastic sheet 41, the valve port 17 is opened, the second through hole 31 is communicated with the lower installation cavity 12, and the liquid medicine in the lower liquid conveying pipe 7 can flow into the upper liquid conveying pipe 8 connected with the female connector 3 through the first through hole 21, the lower installation cavity 12 and the second through hole 31. In the disassembled state, the male connector 1 is separated from the female connector 3, and the elastic sheet 41 is restored to deform to block the valve port 17, so that the second through hole 31 is disconnected from the lower installation cavity 12.

In this embodiment, the elastic sheet 41 normally blocks the valve port 17 of the male connector, and after the male connector 1 and the female connector 3 are butted in place, the force application column 32 pushes the elastic sheet 41 downward, so that the elastic sheet 41 deforms to open the valve port 17, and the second through hole 31 is communicated with the lower installation cavity 12. An upper installation cavity 11 and a lower installation cavity 12 of the male joint 1 are respectively connected with the female joint 3 and the straight-through 2, and the female joint 3 and the straight-through 2 are respectively connected with the upper infusion tube 8 and the lower infusion tube 7. When the male connector 1 and the female connector 3 are separated, the elastic sheet 41 is withdrawn by the external force and then returns to deform, so as to block the valve port 17, and the second through hole 31 is disconnected from the lower installation cavity 12.

In this embodiment, after the through-hole 2 and the female connector 3 are both butted with the male connector 1, the first through-hole 21, the lower mounting cavity 12 and the second through-hole 31 are sequentially communicated to form a liquid medicine channel, the liquid medicine channel is provided with the valve port 17, and the drip-proof gasket 4 controls the on-off of the liquid medicine channel by controlling the valve port 17.

As shown in fig. 1 to 9, a repetitive drip-proof sealing joint comprises a straight-through 2, a male joint 1, a female joint 3 and a drip-proof gasket 4. The through-hole 2 has a first through-hole 21 passing through it up and down along its axis, and the first through-hole 21 can be connected with the lower infusion tube 7. The male connector 1 has a through cavity 10 penetrating up and down along the axis thereof, the through cavity 10 has an upper mounting cavity 11 and a lower mounting cavity 12, the upper mounting cavity 11 can be connected with the female connector 3, and the lower mounting cavity 12 can be connected with the through connector 2. The upper mounting cavity 11 and the lower mounting cavity 12 are separated by a partition wall 13, the partition wall 13 has an upper surface 14 and a lower surface 15, a connecting cavity 16 is formed by penetrating the upper surface 14 and the lower surface 15 up and down, the connecting cavity 16 forms a valve port 17 on the lower surface 15, the connecting cavity 16 connects the upper mounting cavity 11 and the lower mounting cavity 12, and the upper mounting cavity 11, the connecting cavity 16 and the lower mounting cavity 12 form the penetrating cavity 10. The female joint 3 has a second through hole 31 passing through along the axis thereof, the second through hole 31 can be connected with the upper infusion tube 8, and the lower part of the female joint 3 has a force application column 32 corresponding to the drip-proof gasket 4. The drip-proof pad 4 is fixed to the through-hole 2 and has an elastic piece 41, and the elastic piece 41 can be deformed when an external force is applied and can be restored to the deformation when the external force is removed. The elastic piece 41 is arranged corresponding to the valve port 17 of the male connector, and the elastic piece 41 is an elastic sheet-shaped body, and the outer diameter of the elastic sheet-shaped body is larger than the caliber of the valve port 17.

The drip-proof gasket 4 is fixed on the top of the straight through 2, and the straight through 2 is upwards arranged in the lower mounting cavity 12 of the male connector and is fixedly connected with the male connector 1. The female connector 3 is inserted down into the upper mounting cavity 11 of the male connector and forms a detachable connection with the male connector 1. The male joint 1 and the female joint 3 have an assembled state and a disassembled state. In an assembly state, the male connector 1 is butted with the female connector 3, the female connector 3 is arranged in the upper mounting cavity 11 of the male connector, the force application column 32 of the female connector 3 extends downwards into the connecting cavity 16 of the male connector and is pressed against the elastic sheet 41 of the drip-proof gasket 4, and the elastic sheet 41 is deformed under the action of the force application column 32, so that the valve port 17 is opened, and the second through hole 31 is communicated with the lower mounting cavity 12. In the disassembled state, the male connector 1 and the female connector 3 are separated, the force application column 32 is separated from the elastic sheet 41, the elastic sheet 41 is withdrawn by the external force and is restored to be deformed, so that the elastic sheet 41 is attached to the lower surface 15 of the partition wall again to block the valve port 17, and the second through hole 31 is disconnected from the lower installation cavity 12. During transfusion, the male joint 1 and the female joint 3 are in an assembly state, and liquid medicine can flow through the lower transfusion tube 7 connected with the through hole 2, the lower installation cavity 12 and the second through hole 31 and then flow into the upper transfusion tube 8 connected with the female joint 3. When the female joint 3 and the male joint 1 are in a disassembly state, the drip-proof gasket 4 is reset by the elasticity of itself, the function of sealing the valve port 17 is realized, and the leakage of liquid medicine from the lower installation cavity 12 of the male joint is prevented.

The through-hole 2 may include a through-hole body 22 and a seat 23, the through-hole body 22 has an upper end surface 24 and a lower end surface, and the first through-hole 21 vertically penetrates through the upper end surface 24 and the lower end surface. The seat body 23 is fixed on the upper end surface 24 of the straight-through body, and is provided with a base 25 and a central column 26, the central column 26 is suspended above the upper end surface 24 through the base 25, namely, a gap 27 exists between the central column 26 and the upper end surface 24, and the gap 27 is communicated with the first through hole 21, so that the liquid medicine in the lower liquid conveying pipe 7 can flow into the lower mounting cavity 12 of the male connector through the gap 27. The drip-proof gasket 4 further comprises a base 42 integrally formed with the resilient piece 41, the base 42 extending downwards from a central position of the resilient piece 41 and having a recess 43, the recess 43 matching the through central post 26. When the anti-drip gasket 4 is installed, the groove 43 is matched with the central column 26, so that the anti-drip gasket is fixed on the top of the central column 26.

The lower part of the female joint 3 is a hollow force application column 32, the middle part is a hollow threaded column 33, the upper part is a hollow matching cylinder 34 which can be connected with the upper infusion tube 8, and the second through hole 31 sequentially penetrates through the matching cylinder 34, the threaded column 33 and the force application column 32 from top to bottom. The inner diameter of the fitting barrel 34 matches the diameter of the upper infusion tube 8. The threaded post 33 has an external thread. The force application column 32 is a cylindrical body, and has a notch 35 penetrating the second through hole 31, the notch 35 is in a long strip shape, and there may be a plurality of notches 35. The cavity wall of the upper mounting cavity 11 of the male connector is provided with an internal thread which is a double thread, and the female connector 3 is detachably mounted in the upper mounting cavity 11 of the male connector through the matching of the internal thread and the external thread.

The hermetic joint further comprises a sealing gasket 5, the sealing gasket 5 being an annular plate fixed in the upper mounting cavity 11 of the male joint and able to abut against the upper surface 14 of the partition wall 13. The sealing gasket 5 is fixed in the upper mounting cavity 11 through the fixing ring 6. The fixing ring 6 is a vertically penetrating tubular body having a lower fitting hole 61 with a small inner diameter and an upper fitting hole 62 with a large inner diameter, the shape and size of the lower fitting hole 61 are matched with those of the sealing gasket 5, and a step surface 63 is formed at the boundary between the lower fitting hole 61 and the upper fitting hole 62. The fixing ring 6 is fixed in the upper mounting cavity 11 of the male connector in an adhering manner, the lower end surface of the fixing ring is tightly attached to the upper surface 14 of the partition wall, and the sealing gasket 5 is arranged in the lower fitting hole 61 and is tightly pressed on the upper surface 14 of the partition wall by the step surface 63. The inner diameter of the sealing gasket 5 matches the outer diameter of the force application column 32, and the force application column 32 can penetrate the sealing gasket 5 downwards and then is pressed against the elastic sheet 41. The female connector 3 and the male connector 1 are shown undocked in position in figures 6, 7 and 9. When the male connector 1 and the female connector 3 are butted in place and are in an assembled state, the lower part of the female connector 3 is provided with a sealing end surface 36, and the sealing end surface 36 presses the sealing gasket 5 to play a sealing role. The sealing gasket 5 is fitted over the urging post 32 at the lower portion of the female connector 3, and the urging post 31 has the sealing end face 36, and the sealing end face 36 is pressed against the sealing gasket 5, so that the sealing gasket 5 and the female connector 3 are sealingly engaged in the axial direction and the radial direction of the female connector 3.

In the present embodiment, the drip-proof gasket 4 has an elastic sheet 41, and the elastic sheet 41 is a sheet-like body having elasticity, which may be circular, or other regular or irregular shape, and may be in planar contact with the upper surface 14 of the partition wall. The elastic sheet 41 can open the valve port 17 and close the valve port 17, thereby realizing the on-off control of the liquid medicine passage. When the valve port 17 is opened by the elastic sheet 41, the elastic sheet 41 deforms to form a gap 18 between the upper surface 14 and the elastic sheet 41, and the lower mounting chamber 12 communicates with the second through hole 31 through the gap 18 and the notch 35. When the male joint 1 and the female joint 3 are separated, the elastic sheet 41 closes the valve port 17, so that the leakage of the liquid medicine can be effectively avoided. The female connector 3 has a force application column 32, the force application column 32 can press against the elastic sheet 41, so that the elastic sheet 41 is deformed to open the valve port 17, the force application column 32 extends into the connection cavity 16 of the male connector, and the outer diameter of the force application column 32 can be matched with the inner diameter of the connection cavity 16. The upper mounting cavity 11 of the male connector is internally fixed with a sealing gasket 5, the sealing gasket 5 can be in plane fit with the upper surface 14 of the partition wall 13, the sealing gasket 5 has elasticity and can sleeve the force application column 32, and when the pressure generated by the injected liquid medicine is less than or equal to the designed value, the sealing gasket 5 can play a sealing role. The sealing gasket 5 may be circular or other regular or irregular shape. The upper infusion tube 8 can be fixed to the second through hole 31 of the female connector in an adhesion manner. The lower infusion tube 7 can be fixed to the first through hole 21 by means of adhesion.

For the closed connector, when the male connector and the female connector are in an assembly state, certain pressure exists when liquid medicine passes through, and at the moment, the sealing gasket can play a sealing role. The retainer plate bonds with the male joint and forms an organic whole, and the retainer plate can fixed seal gasket, prevents that seal gasket from sliding the dislocation.

The foregoing is a more detailed description of the present invention that is presented in conjunction with specific embodiments, and the practice of the invention is not to be considered limited to those descriptions. It will be apparent to those skilled in the art that a number of simple derivations or substitutions can be made without departing from the inventive concept.