CN215537218U - Infusion joint - Google Patents

Abstract

The utility model relates to the technical field of medical appliances, in particular to an infusion joint, which comprises a rubber plug, wherein the rubber plug comprises an abutting part, a notch groove is formed in the end face, abutted against an infusion device, of the abutting part, at least one abdicating channel with two closed ends is arranged below the notch groove of the abutting part, and the extending direction of the notch groove is parallel to the extending direction of the abdicating channel; when the infusion apparatus extrudes the abutting part, the two opposite side walls of the abdicating channel in the extrusion direction of the infusion apparatus are extruded by the deformation of the abutting part to be close to each other, and the notch groove is sunken along the extrusion direction of the infusion apparatus. The utility model can promote the directional deformation of the rubber plug and simultaneously avoid the liquid medicine from remaining in the rubber plug, thereby ensuring the safe and stable infusion of the infusion joint.

Description

Infusion joint

Technical Field

The utility model relates to the technical field of medical appliances, in particular to an infusion joint.

Background

The transfusion connector is usually used together with transfusion instruments such as a heparin cap and the like, and is mainly used for preventing blood backflow when a needle is left for sealing a tube, wherein the needle-free transfusion connector can prevent blood-borne infection risk caused by the fact that clinical medical care personnel are injured by a needle, and can reduce the occurrence probability of clinical thrombosis and tube blockage, so the needle-free transfusion connector is widely applied to the market.

The existing needle-free infusion connector comprises a shell and a rubber plug arranged in the shell, a groove is formed in one side of the rubber plug, an infusion device is connected to the shell and is suitable for extruding the rubber plug, the groove provides a deformation space for the rubber plug, and then an infusion channel for conveying medicine liquid is made.

However, the rubber plug of the infusion joint is easy to deform irregularly at the butt joint of the rubber plug and the infusion device, so that the opening structure of an infusion channel formed when the rubber plug is extruded at each time is different in size, the good conveying effect of the infusion joint on liquid medicine is difficult to ensure, and the liquid medicine is easy to remain in the groove during conveying and has certain potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The utility model solves the problem of how to cause the rubber plug to directionally deform and avoid the liquid medicine from remaining in the rubber plug, thereby ensuring the safe and stable infusion of the infusion joint.

In order to solve the problems, the utility model provides an infusion joint, which comprises a rubber plug, wherein the rubber plug comprises an abutting part, a notch groove is arranged on the end surface of the abutting part abutting against an infusion device, at least one abdicating channel with two closed ends is arranged below the notch groove of the abutting part, and the extending direction of the notch groove is parallel to the extending direction of the abdicating channel; when the infusion apparatus extrudes the abutting part, two opposite side walls of the abdicating channel in the extrusion direction of the infusion apparatus are extruded by the deformation of the abutting part to be close to each other, and the notch groove is sunken towards the extrusion direction of the infusion apparatus.

Compared with the prior art, the notch groove enables the top of the rubber plug to have a guide notch, the abdication channel enables the abutting part of the rubber plug to be hollow, and the rubber plug is deformed before other parts because the abutting part does not have a supporting structure at the abdication channel; therefore, when the infusion apparatus extrudes the abutting part of the rubber plug, two opposite side walls of the abdicating channel in the extrusion direction of the infusion apparatus are mutually close by the deformation extrusion of the abutting part, so as to provide a deformation space for the notch groove, further promote the rubber plug to directionally deform, and realize the guiding and conveying of the liquid medicine through the notch groove; meanwhile, as the two ends of the abdicating channel are sealed, the liquid medicine is prevented from remaining in the abdicating channel, and the safe and stable infusion of the infusion joint is ensured.

Further, the notch groove is a V-shaped groove or an arc-shaped groove.

Through adopting above-mentioned technical scheme, when butt portion pressurized takes place deformation, V type groove and arc wall homoenergetic are directional sunken fast, further reduce the possibility that butt portion takes place irregular deformation.

Furthermore, the abdicating channel is one of a diamond channel, a circular channel and an oval channel.

Through adopting above-mentioned technical scheme, rhombus passageway, circular passageway and oval passageway both have certain structural stability, can take place deformation under proper exogenic action again, and when consequently butt portion pressurized takes place deformation, the closure is changeed to above-mentioned passageway, and then makes the quick orientation of breach groove sunken.

The infusion connector further comprises a shell, a liquid inlet and a liquid outlet are formed in the shell, the abutting portion is hermetically installed in the liquid inlet, and at least one flow guide groove suitable for communicating the notch groove and the interior of the shell is formed in the inner wall of the liquid inlet of the shell; when the infusion apparatus extrudes the abutting part, the abutting part is suitable for sliding along the extension direction of the liquid inlet, and the gap groove is concave towards the inside of the shell and is suitable for being communicated with the diversion groove.

Through adopting above-mentioned technical scheme, the shell takes place directional the slip for infusion utensil extrusion butt portion and provides good support and guide effect with deformation, and the guiding gutter is used for guaranteeing that the liquid medicine flows in the shell smoothly from the breach groove in, discharges from the liquid outlet at last, guarantees from this that the infusion connects the good transport effect to the liquid medicine.

Further, at least one sealing ring is arranged on the outer side wall of the abutting part and is suitable for sealing a radial gap between the abutting part and the shell.

Through adopting above-mentioned technical scheme, the radial clearance of sealing ring ability to butt joint portion and shell is sealed, reduces the liquid medicine and remains in the interval between the two, reduces the potential safety hazard that the infusion connects, improves infusion joint's infusion efficiency simultaneously.

Further, the shell includes the casing, the casing is including the last body and the body down that connect gradually, the internal diameter of going up the body is less than the internal diameter of body down, the lumen of going up the body forms the inlet of shell, the guiding gutter is seted up run through on the inner wall of last body and down to with the lumen intercommunication of body down.

By adopting the technical scheme, the upper pipe body is used for sliding the abutting part, and the lower pipe body provides a space for conveying the liquid medicine to the shell; when the abutting part is in a loose state, the abutting part can effectively seal the liquid inlet; when butt portion is in the state of compressing tightly, breach groove and guiding gutter intercommunication because the guiding gutter communicates with the lumen of lower body, and then makes the liquid medicine in the inlet can loop through breach groove and guiding gutter and flow in the inside of shell, has effectively guaranteed that the infusion connects the good transport effect to the liquid medicine.

Further, the shell still includes the end cover, the body is keeping away from down one side of last body is equipped with the installing port, end cover seal installation in installing port department, the liquid outlet is established on the end cover.

Through adopting above-mentioned technical scheme, the casing is as the bed frame of shell, and end cover demountable installation is on the casing, and the sealing cover of pars contractilis connects on the end cover, makes things convenient for the quick installation of plug from this.

Further, the plug still includes the pars contractilis, the pars contractilis wears to establish the lumen of body down, the one end of pars contractilis with butt portion links to each other, the other end of pars contractilis is established on the end cover, the outer wall of pars contractilis with the inner wall of body down form one with the guiding gutter with the infusion chamber of liquid outlet intercommunication, the pars contractilis be suitable for to follow the extending direction of inlet is flexible.

By adopting the technical scheme, on one hand, the telescopic part can give way for the abutting part which slides towards the inside of the shell, so that the liquid inlet, the gap groove, the flow guide groove, the infusion cavity and the liquid outlet are sequentially communicated, and the smooth circulation of the liquid medicine in the infusion joint is facilitated; on the other hand, a good restoring force can be provided for the resetting of the abutment.

Further, the middle part of pars contractilis is equipped with the cavity, be equipped with at least one infusate hole and at least one air vent on the end cover, the infusate hole respectively with the infusate chamber with the liquid outlet intercommunication, butt portion is in the passageway of stepping down is kept away from one side in breach groove is equipped with at least one exhaust passage, the passageway of stepping down passes through exhaust passage with the cavity intercommunication, the cavity passes through the air vent with the outside intercommunication of shell.

By adopting the technical scheme, the conveying cavity is communicated with the liquid outlet due to the arrangement of the transfusion hole, so that the conveying of the liquid medicine is realized; the air vent then can make butt portion and pars contractilis at deformation in-process, and the atmospheric pressure of letting outside passageway, cavity and the shell keeps unanimous, avoids it to have pressure differential and influences the deformation effect of plug.

Further, the inner wall of pars contractilis is equipped with at least one sand grip, the length direction of sand grip with the extending direction of liquid inlet is unanimous.

Through adopting above-mentioned technical scheme, the sand grip can increase the flexible degree of difficulty of pars contractilis, makes the order that the plug takes place deformation position be for stepping down passageway, breach groove and pars contractilis in proper order, and then makes better the deformation that leads of plug, guarantees that the infusion connects the stable infusion.

Drawings

FIG. 1 is a schematic view of a configuration of an infusion connector and an infusion set which are matched in a first embodiment of the utility model;

FIG. 2 is a schematic view of the internal structure of an infusion connector according to a first embodiment of the present invention;

fig. 3 is a schematic view of the inside of the explosion structure of the housing according to the first embodiment of the present invention;

fig. 4 is a schematic structural view of a rubber plug according to a first embodiment of the present invention;

fig. 5 is a schematic view of the internal structure of the rubber plug according to the first embodiment of the present invention;

FIG. 6 is a schematic view of the internal structure of the infusion connector and the infusion set according to the first embodiment of the present invention;

fig. 7 is a schematic structural view of an infusion joint according to a second embodiment of the present invention.

Description of reference numerals:

1-an infusion set; 2-a shell; 21-feeding the pipe body; 211 — a first thread; 212-guiding gutter; 22-lower tube body; 221-mounting port; 222-a clamping bar; 3-end cover; 31-positioning seat; 311-infusion hole; 312-a vent; 32-positioning plate; 33-an infusion tube; 4-branch pipe; 41-a second thread; 5-a rubber plug; 51-an abutment; 511-a notch groove; 512-yielding channel; 513-a sealing ring; 514-exhaust channel; 52-a telescoping section; 521-a cavity; 522-convex strips; 53-a positioning ring; 6-liquid inlet; 7-a liquid outlet; 8-infusion lumen.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it should be noted that terms such as "upper", "lower", "front", "rear", and the like in the embodiments indicate orientation words, which are used for simplifying the description of positional relationships based on the drawings of the specification, and do not represent that elements, devices, and the like which are referred to must operate according to specific orientations and defined operations and methods, configurations in the specification, and such orientation terms do not constitute limitations of the present invention. In the embodiments, the references to "inner" and "outer" refer to the inner side of the case and the outer side of the case with respect to a chamber structure, such as a case.

In addition, the drawings of the embodiments of the present invention are provided with a coordinate system XYZ in which a forward direction of the X axis represents a front side, a reverse direction of the X axis represents a rear side, a forward direction of the Y axis represents a right side, a reverse direction of the Y axis represents a left side, a forward direction of the Z axis represents an upper side, and a reverse direction of the Z axis represents a lower side.

The terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein.

The utility model provides an infusion joint, which is shown in figure 1 and comprises a shell and a rubber plug 5 arranged in the shell in a penetrating way, and the rubber plug is matched with an infusion apparatus 1 such as a heparin cap and the like for use and is used for preventing blood backflow, thrombus formation and the like.

Referring to fig. 2 and 3, the housing includes a case 2 and an end cap 3. The casing 2 is cylindrical as a base frame of the housing, and includes an upper pipe body 21 and a lower pipe body 22 which are connected in sequence, and the inner diameter of the upper pipe body 21 is smaller than that of the lower pipe body 22. The lumen of the upper tube body 21 forms the inlet port 6 of the housing such that the inlet port 6 extends a distance in the axial direction of the housing 2. The outer side wall of the top of the upper tube body 21 is also provided with a first thread 211, and the first thread 211 is suitable for matching with the thread connection of the infusion set 1 and the infusion joint.

The shape of the end cap 3 may be a conical joint, and the embodiment specifically includes a positioning seat 31, a positioning plate 32 and an infusion tube 33 which are integrally arranged. A mounting opening 221 is formed in the bottom of the lower tube body 22, and the positioning plate 32 of the end cover 3 is hermetically clamped in the mounting opening 221 of the housing 2 through interference fit for sealing the mounting opening 221, so that the end cover 3 is detachably mounted on the housing 2. The lumen of the infusion tube 33 forms the liquid outlet 7 of the housing, one end of which is connected to the bottom surface of the positioning plate 32, and the other end of which is suspended downward below the positioning plate 32 for outputting the liquid medicine.

The positioning seat 31 is connected to the top surface of the positioning plate 32 and located in the lumen of the lower tube 22, and a space exists between the circumferential side wall of the positioning seat 31 and the inner wall of the lower tube 22. The positioning seat 31 is uniformly provided with at least one infusion hole 311 along the circumferential direction thereof, and both ends of the infusion hole 311 are respectively communicated with the lower tube body 22 and the infusion tube 33, so that the liquid medicine input from the liquid inlet 6 sequentially flows through the lower tube body 22, the infusion hole 311 and the infusion tube 33 to be delivered. In this embodiment, the horizontal cross section of the infusion hole 311 is fan-shaped, and three infusion holes are uniformly formed along the circumferential direction of the positioning seat 31, thereby facilitating the rapid circulation of the liquid medicine.

The casing in this embodiment further includes a branch tube 4, and the branch tube 4 is disposed obliquely with respect to a horizontal plane (a plane parallel to the XY plane), and integrally provided on the outer side wall of the lower tube 22 and communicating with the lumen of the lower tube 22, so that the casing as a whole is Y-shaped. The branch pipe 4 is beneficial to increasing the delivery path of the infusion joint and expanding the application range of the infusion joint. The branch tube 4 is provided with a second thread 41 on the outer side wall of the end remote from the lower tube body 22, which second thread 41 is also adapted to cooperate with a thread connection of an infusion set 1, such as a heparin cap, to an infusion connector.

Referring to fig. 3 and 4, the rubber plug 5 includes an abutting portion 51 and a telescopic portion 52, which are integrally disposed, and may be made of rubber, silica gel, or other materials having elastic deformation. Wherein, the abutting part 51 is hermetically arranged in the liquid inlet 6 and is suitable for sliding back and forth along the extending direction (parallel to the Z axis) of the liquid inlet 6. When the infusion set 1 is in threaded connection with the infusion connector, the infusion set 1 abuts against the end face (the top face of the abutting part 51 in the drawing) of the abutting part 51 facing the liquid inlet 6, the infusion set 1 is screwed up and then the abutting part 51 is squeezed, so that the abutting part 51 slides towards the inside of the shell 2 along the extension direction of the liquid inlet 6, and the shell 2 provides good support and guide effects for the infusion set 1 to squeeze the abutting part 51 to directionally slide and deform.

Referring to fig. 2, when the abutting portion 51 is sealingly inserted into the liquid inlet 6, the top surface of the abutting portion 51 is flush with the outer side wall of the upper tube body 21 (the top surface of the upper tube body 21 in the figure), so that when the infusion connector is connected to the infusion set 1, the infusion set 1 abuts against the top surface of the abutting portion 51, and the dead angle of disinfection between the rubber plug 5 and the housing is effectively reduced.

Referring to fig. 6, in the present embodiment, the abutting portion 51 has one notch 511 on an end surface abutting against the infusion set 1 (i.e., a top surface of the abutting portion 51), the abutting portion 51 has at least one abdicating channel 512 with both closed ends below the notch 511, and the extending direction of the notch 511 is parallel to the extending direction of the abdicating channel 512, and both the extending directions are parallel to the X axis in the drawing. Two ends of the abdicating channel 512 are closed, that is, the opposite two sides of the abutting part 51 in the direction parallel to the X axis are not penetrated by the abdicating channel 512, so as to prevent the liquid medicine from flowing into the abdicating channel 512, and the inner wall of the liquid inlet 6 of the upper tube body 21 is provided with at least one diversion groove 212 suitable for communicating the notch groove 511 with the inside of the housing, thereby realizing smooth circulation of the liquid medicine in the upper tube body 21.

Compared with the prior art, the gap slot 511 of the utility model enables the top of the rubber plug 5 to have a guiding gap, the abdicating channel 512 enables the abutting part 51 of the rubber plug 5 to be hollow, and the rubber plug 5 is deformed before other parts because the abutting part 51 has no supporting structure at the abdicating channel 512, thereby providing a deformation space for the gap slot 511. When the infusion set 1 presses the abutting part 51, the two opposite side walls of the abdicating channel 512 in the pressing direction of the infusion set 1 are pressed by the deformation of the abutting part 51 to approach each other, and then the notch 511 is recessed towards the pressing direction of the infusion set 1 (i.e. the inside of the housing) to be suitable for communicating with the diversion trench 212, thereby directionally deforming the rubber plug 5.

The notch 511 in this embodiment is opened at the center of the top end surface of the abutting portion 51, and may be a V-shaped groove or an arc-shaped groove. This is because when the abutting portion 51 is deformed by pressure, the notched groove 511 has good symmetry at the top of the abutting portion 51, so that the pressure applied to the abutting portion 51 by the infusion set 1 can be uniformly distributed on the two opposite sides of the notched groove 511, which facilitates the quick directional depression of the notched groove 511 into the housing. And V type groove and arc wall homoenergetic are fast to the inside directional sunken of shell, reduce butt portion 51 and take place the possibility of irregular deformation. The V-shaped groove can generate a guiding effect on the directional depression of the notch 511 due to the bevel, so that the directional depression efficiency of the notch 511 is further improved.

The yielding channel 512 in this embodiment is specifically provided with one, and is located right below the notch slot 511, and may be one of a diamond channel, a circular channel, and an oval channel. Because rhombus passageway, circular passageway and oval passageway had both had certain structural stability, can take place deformation under the appropriate exogenic action again, so when butt portion 51 pressurized takes place deformation, the aforesaid is let the position passageway 512 and is changeed and realize closing, and then impels breach groove 511 to directional sunken inside the shell fast. In the embodiment, the rhombic channel is further preferred, and the rhombic channel has better guidance property compared with a circular channel and an elliptical channel when being closed, so that the closing efficiency of the abdicating channel 512 is improved.

At least one sealing ring 513 is integrally disposed on an outer side wall of the abutting portion 51, and in this embodiment, one sealing ring 513 is specifically disposed. When the abutting portion 51 is inserted into the liquid inlet 6, the sealing ring 513 abuts against the inner wall of the upper pipe body 21, so as to seal the radial gap between the abutting portion 51 and the upper pipe body 21, thereby increasing the sealing effect of the abutting portion 51 on the liquid inlet 6.

The expansion part 52 is inserted into the lumen of the lower tube 22, one end of the expansion part 52 is connected to the contact part 51, the other end of the expansion part 52 is connected to a positioning ring 53, and the outer diameter of the positioning ring 53 is larger than that of the expansion part 52. The positioning ring 53 is hermetically sleeved on the positioning seat 31 of the end cover 3, so that the telescopic part 52 is connected with the positioning seat 31, and the outer wall of the telescopic part 52 and the inner wall of the shell form a transfusion cavity 8 communicated with the diversion trench 212 and the liquid outlet 7. The telescopic part 52 is suitable for being telescopic back and forth along the extension direction of the liquid inlet 6, and on one hand, the telescopic part can give way for the abutting part 51 sliding towards the inside of the shell, so that the liquid inlet 6, the notch groove 511, the diversion groove 212, the infusion cavity 8 and the liquid outlet 7 are sequentially communicated, and the smooth circulation of the liquid medicine in the positive pressure joint is facilitated; on the other hand, a good restoring force can be provided for the reset of the abutting portion 51.

At least one clamping strip 222 is protruded along the circumferential surface of the inner wall of the lower pipe body 22 at intervals, three clamping strips 222 are specifically arranged in the embodiment, the length of each clamping strip 222 is extended reversely and parallel to the axial direction of the lower pipe body 22, one side of each clamping strip 222 is abutted against the outer circumferential surface of the telescopic part 52, and therefore radial swinging of the telescopic part 52 in axial deformation is reduced, and the telescopic efficiency of the telescopic part 52 is improved.

The middle part of the telescopic part 52 is provided with a cavity 521, the cavity 521 penetrates downwards to the bottom of the telescopic part 52 and is communicated with the positioning ring 53, the positioning seat 31 of the end cover 3 is suitable for sealing the opening of the cavity 521, and therefore the rubber plug 5 is arranged in the shell 2 from bottom to top through the mounting hole 221 of the lower pipe body 22, so that the rubber plug 5 can be conveniently and quickly mounted.

At least one vent hole 312 is arranged on the positioning seat 31, the vent hole 312 vertically penetrates through the bottom plate surface of the positioning plate 32 from top to bottom, at least one exhaust channel 514 communicated with the cavity 521 is arranged on one side of the abdicating channel 512 of the abutting part 51 far away from the notch groove 511, the abdicating channel 512 is communicated with the cavity 521 through the exhaust channel 514, and the cavity 521 is communicated with the outside of the housing 2 through the vent hole 312. In this embodiment, two air holes 312 are symmetrically disposed, and one exhaust channel 514 is specifically disposed and located at the central axis of the abutting portion 51, so that the abutting portion 51 is convenient to deform in a guiding manner. The vent 312 can make the abutting portion 51 and the telescopic portion 52 keep the same air pressure outside the yielding channel 512, the cavity 521 and the housing in the deformation process, so as to avoid the influence of the pressure difference on the deformation effect of the rubber plug 5.

At least one convex strip 522 is arranged on the inner wall of the telescopic part 52, the convex strip 522 protrudes in the cavity 521, and the length direction of the convex strip 522 is consistent with the extension direction (the direction parallel to the Z axis) of the liquid inlet 6. The sand grip 522 specifically is equipped with threely in this embodiment, and three sand grip 522 evenly sets up along the inner peripheral surface of pars contractilis 52, and it can increase the flexible degree of difficulty of pars contractilis 52, makes the order that plug 5 takes place the deformation position for stepping down channel 512, breach groove 511 and pars contractilis 52 in proper order, and then makes the better deformation that leads of plug 5, guarantees that the infusion connects the stable infusion.

When the infusion set 1 is in threaded connection with the infusion connector, the abutting part 51 of the rubber plug 5 is pressed by the infusion set 1 to slide towards the inside of the shell 2, the abdicating channel 512 is closed, the notch groove 511 is sunken towards the inside of the shell 2, at the moment, the diversion groove 212 is communicated with the notch groove 511, and the part of the telescopic part 52 located in the cavity 521 is folded and bent to form a deformation space for the abutting part 51. The liquid medicine is input from the liquid inlet 6, flows through the notch groove 511, the flow guide groove 212, the infusion cavity 8 and the infusion hole 311 in sequence, and then flows out of the positive pressure joint from the liquid outlet 7, so that the liquid medicine is guided and conveyed, and the excellent conveying effect of the infusion joint on the liquid medicine is ensured. Meanwhile, as the two ends of the abdicating channel 512 are sealed, the liquid medicine can be effectively prevented from remaining in the abdicating channel 512, and the safe and stable infusion of the infusion connector is ensured.

In addition, because the direction of breach groove 511 is sunken to realize on the closed basis of the passageway 512 of stepping down in this embodiment, consequently this breach groove 511's groove depth is lighter for the top of plug 5 is the plane almost, can reduce the remaining of bacterium from this, makes things convenient for the clearance and the disinfection of positive pressure joint.

The second embodiment of the utility model provides an infusion connector, as shown in fig. 7, which is different from the first embodiment in that the housing of the positive pressure connector in the present embodiment only comprises the housing 2 and the end cover 3 as in the first embodiment, and does not comprise the branch pipe 4, so that the housing is in a straight cylinder shape as a whole.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims (10)

1. The utility model provides an infusion connects, characterized in that, includes plug (5), plug (5) are including butt portion (51), butt portion (51) are equipped with a breach groove (511) on the terminal surface with infusion utensil (1) butt, butt portion (51) are in the below of breach groove (511) is equipped with at least one both ends confined channel of stepping down (512), just the extending direction of breach groove (511) with the extending direction of the channel of stepping down (512) is parallel; when the infusion set (1) extrudes the abutting part (51), the abdicating channel (512) is positioned on two opposite side walls in the extrusion direction of the infusion set (1) and is extruded by the deformation of the abutting part (51) to be close to each other, and the notch groove (511) is sunken along the extrusion direction of the infusion set (1).

2. The infusion connection according to claim 1, characterized in that the notch groove (511) is a V-groove or an arc-shaped groove.

3. The infusion connector according to claim 1, wherein the abdicating channel (512) is one of a diamond-shaped channel, a circular channel, an oval channel.

4. The infusion connector according to any one of claims 1 to 3, further comprising a housing provided with a liquid inlet (6) and a liquid outlet (7), wherein the abutting part (51) is hermetically mounted in the liquid inlet (6), and the housing is provided with at least one diversion groove (212) on the inner wall of the liquid inlet (6) for communicating the notch groove (511) with the interior of the housing; when the infusion apparatus (1) extrudes the abutting part (51), the abutting part (51) is suitable for sliding along the extension direction of the liquid inlet (6), and the notch groove (511) is sunken towards the inside of the shell and is suitable for being communicated with the diversion groove (212).

5. The infusion connection according to claim 4, characterized in that at least one sealing ring (513) is provided on the outer side wall of the abutment portion (51), the sealing ring (513) being adapted to close the radial gap between the abutment portion (51) and the housing.

6. The infusion connector according to claim 4, characterized in that the housing comprises a shell (2), the shell (2) comprises an upper tube body (21) and a lower tube body (22) which are connected in sequence, the inner diameter of the upper tube body (21) is smaller than that of the lower tube body (22), the liquid inlet (6) of the housing is formed by the lumen of the upper tube body (21), and the diversion trench (212) is opened on the inner wall of the upper tube body (21) and penetrates downwards to be communicated with the lumen of the lower tube body (22).

7. Infusion connection according to claim 6, characterized in that the housing further comprises an end cap (3), the lower tube (22) is provided with a mounting opening (221) at a side remote from the upper tube (21), the end cap (3) is sealingly mounted at the mounting opening (221), and the liquid outlet (7) is provided on the end cap (3).

8. The infusion joint according to claim 7, wherein the rubber plug (5) further comprises a telescopic portion (52), the telescopic portion (52) is arranged in a tube cavity of the lower tube body (22) in a penetrating manner, one end of the telescopic portion (52) is connected with the abutting portion (51), the other end of the telescopic portion (52) is arranged on the end cover (3), an infusion cavity (8) communicated with the flow guide groove (212) and the liquid outlet (7) is formed by the outer wall of the telescopic portion (52) and the inner wall of the lower tube body (22), and the telescopic portion (52) is suitable for being telescopic along the extension direction of the liquid inlet (6).

9. The infusion joint according to claim 8, wherein a cavity (521) is arranged in the middle of the telescopic portion (52), at least one infusion hole (311) and at least one vent hole (312) are arranged on the end cover (3), the infusion hole (311) is communicated with the infusion cavity (8) and the liquid outlet (7) respectively, at least one exhaust channel (514) is arranged on one side, away from the notch groove (511), of the abdicating channel (512) of the abutting portion (51), the abdicating channel (512) is communicated with the cavity (521) through the exhaust channel (514), and the cavity (521) is communicated with the outside of the shell through the vent hole (312).

10. The infusion connector according to claim 9, characterized in that the inner wall of the telescopic part (52) is provided with at least one rib (522), and the length direction of the rib (522) is consistent with the extension direction of the liquid inlet (6).

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