CN107693882B - Safety infusion joint - Google Patents

Abstract

A safety infusion connector provided by the present invention comprises a combined inner tube, a first elastic member, a sealing member and an outer shell. The first elastic member seals the inlet of the outer shell, and the sealing member seals the outlet of the outer shell. The double sealing structure makes the safety infusion connector leak-proof and airtight better. When in use, a part of the combined inner tube is fixed, so the structure is stable.

Description

Safety infusion connector

technical field

The present invention relates to a medical device, in particular to a safe infusion connector that does not require the use of sharp needles.

Background technique

In medical treatment, various infusion pipelines are often used to input or output various liquids for patients, such as dripping, adding medicines, or drawing blood and so on. The infusion connector is used to connect with various infusion pipelines as a valve for liquid input or output. Especially with the increasing attention to the safety of medical personnel, safety infusion connectors that do not require the use of sharp needles have been used by many medical institutions in recent years.

The existing safety infusion joints can be roughly divided into two types. The first type only has a sealing structure. For example, the safety infusion joint disclosed in Taiwan Patent No. M407761 has an inner tube, and the opening of the inner tube has an elastic When the opening is opened, the elastic member is deformed to expose the opening. This structure is prone to poor sealing effect due to the elastic relaxation of the elastic member.

The second type has two sealing structures, such as the safety infusion connector disclosed in Taiwan Patent No. I378806, which has a shell, an elastic valve and a bidirectional conducting element. The housing has two openings, the elastic valve is accommodated in the housing and seals the two openings, and the elastic valve defines an accommodating space to support the bidirectional conducting element. There is an infusion channel in the bidirectional conduction element. When in use, the elastic valve is deformed by being pushed by the external joint, so that the two-way conducting element stretches the elastic valve, and the infusion channel communicates with the two openings at the same time.

Although the above-mentioned second type of safety infusion connector adds a sealing structure, the bidirectional conductive element is only supported and positioned by the elastic valve. The elastic valve needs to be squeezed and deformed every time it is used, and it is expected that the elastic valve will be easily loosened after long-term use, thereby causing the position of the bidirectional conductive element to be unstable, and leakage occurs.

It can be seen from the above situation that the traditional safety infusion connector still needs to be improved.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a safety infusion connector with better sealing effect and stable structure.

In order to achieve the aforementioned object, the present invention provides a safety infusion connector, which includes a first inner tube, a second inner tube, a shell, a first elastic member and a sealing member. The first inner tube has a first protruding portion, a fitting portion and at least a first abutting portion, the first protruding portion and the first abutting portion are respectively connected with the fitting portion, and the first protruding portion is free The end has at least one first through hole, the first protruding part has a first flow channel, the first through hole is communicated with the first flow channel; the second inner tube has a second protruding part, a trunk part and at least one second abutting top, the second protruding part and the second abutting top are respectively connected with the trunk part, the free end of the second protruding part has at least a second perforation, the second protruding part and the trunk part have a second flow The second through hole communicates with the second flow channel, and the free end of the second abutment has a flange that protrudes outward; wherein the sleeve part and the trunk part are sleeved with each other, and the first abutment Alternately arranged with the second abutting top, the free end of the first protruding portion and the free end of the second protruding portion face two opposite directions respectively, the first flow channel is communicated with the second flow channel; the shell has a peripheral wall and A first end wall and a second end wall that close both ends of the peripheral wall, the peripheral wall, the first end wall and the second end wall together form a first accommodating space, the first end wall and the first end wall Each of the two end walls has an opening, and a first annular wall and a second annular wall extend outward from the edge of the opening. The first annular wall encloses a first channel, and the second annular wall encloses a first annular wall. Two passages; the first elastic member has a head, a body and a fixing part, the head extends from one side of the body and forms a closed end, and the other side of the body extends out An open end is formed, the body has a second accommodating space, the second accommodating space communicates with the open end, the inner wall surface of the body has a positioning groove, and the fixing part is connected with the open end and fixed to the casing; the seal is attached to the second end wall and abutted by the first abutting top; wherein the first protruding portion faces the first annular wall, and the first elastic member is sleeved on the first protruding portion , the first protruding portion is accommodated in the second accommodating space through the open end, the positioning groove is engaged with the flange, the head is located in the first ring wall and seals the first passage, The second protrusion faces the second annular wall.

A preferred embodiment of the present invention discloses the safety infusion connector, wherein the peripheral wall has an inner peripheral wall and an outer peripheral wall that can be engaged with each other, the inner peripheral wall is connected with the first end wall, and the peripheral wall is connected with the second end wall connected, the fixing portion is arranged between the inner peripheral wall and the outer peripheral wall.

In the safety infusion connector disclosed in a preferred embodiment of the present invention, the first inner tube has two first abutting tops arranged oppositely, and the second inner tube has two second abutting tops arranged oppositely.

In the safety infusion connector disclosed in a preferred embodiment of the present invention, the body of the first elastic member further has a neck portion where the head is connected, and the junction between the first end wall and the first ring wall also has a contact a pressing part, the pressing part presses the neck.

In the safety infusion connector disclosed in a preferred embodiment of the present invention, an elastic ring is further provided between the sleeve portion of the first inner tube and the trunk portion of the second inner tube.

In the safety infusion connector disclosed in a preferred embodiment of the present invention, the free end of the first protruding portion is tapered and has a first side surface, and the first through hole is opened on the first side surface.

In the safety infusion connector disclosed in a preferred embodiment of the present invention, the free end of the second protruding portion is tapered and has a second side surface, the second through hole is opened on the second side surface, and the sealing member has a concave a groove, the second side is accommodated in the groove.

In this way, in the safety infusion connector disclosed in the present invention, the first elastic member and the sealing member are used to seal the first channel and the second channel respectively, so that the sealing effect is better. In addition, the first inner tube passes through the first channel. The abutting top is abutted against the second end wall of the casing, and the structure is still stable in long-term use.

The detailed features of the present invention will be described in the following detailed description. However, those of ordinary skill in the field of the present invention should understand that these detailed descriptions and the specific embodiments enumerated for implementing the present invention are only used to illustrate the present invention, and not to limit the scope of protection required by the claims of the present invention. .

Description of drawings

FIG. 1 is a schematic perspective view of the present invention.

Figure 2 is an exploded perspective view of the present invention.

Figure 3 is a partial side view of the present invention.

FIG. 4 is a cross-sectional view taken along line 44 in FIG. 1 .

FIG. 5 is a schematic diagram of the use state of FIG. 4 , mainly showing the circulation of the safety infusion connector.

【Symbol Description】

Safety infusion connector 10

first inner tube 20

The first protrusion 22 The free end 221

First through hole 223 First flow channel 225

first side 227

The sleeve part 24 first abuts the top 26

The second inner tube 30

second protrusion 32 free end 321

The second perforation 323 The second flow channel 325

second side 327

Torso 34 Second Reach Top 36

Free end 361 Flange 362

Shell 40

Peripheral wall 41 Inner peripheral wall 412

Peripheral wall 414 First end wall 42

second end wall 43 first accommodating space 44

The first ring wall 45 The first channel 451

Second annular wall 46 Second channel 461

Pressing part 48

The first elastic member 50

Head 52 Neck 54

Body 56 Open End 561

Positioning groove 562 First elastic ring 563

Second accommodating space 58 Fixing part 59

Seal 60 Groove 62

elastic ring 80

Detailed ways

Referring to FIGS. 1 to 2 , the safety infusion connector 10 provided by the present invention includes a first inner tube 20 , a second inner tube 30 , an outer shell 40 , a first elastic member 50 and a sealing member 60 .

Please refer to FIGS. 2 , 3 and 4 , the first inner tube 20 has a first protruding portion 22 , a fitting portion 24 and two first abutting tops 26 . The fitting portion 24 is generally in the shape of a hollow cylinder. One end of the fitting portion 24 is connected to the first protruding portion 22 , and the other end of the fitting portion 24 is connected to the two first abutting portions 26 , and the two first abutting portions 26 are located at one end of the fitting portion 24 . At two opposite positions, the end of the first protruding portion 22 that is not connected to the sleeve portion 24 is its free end 221 , and the free end 221 of the first protruding portion 22 has two first through holes 223 . A first flow channel 225 is provided, and the first through hole 223 communicates with the first flow channel 225 . In other possible embodiments, the number of the first abutment portion 26 and the first through hole 223 may be one.

The second inner tube 30 has a second protruding portion 32 , a trunk portion 34 and two second abutting portions 36 . One end of the second protruding portion 32 is connected to the trunk portion 34 , and the other end is the second protruding portion 32 . The free ends 321 of the second abutting portions 36 are located at two opposite positions and are connected to the trunk portion 34 respectively. The free end 321 of the second protruding portion 32 has two second through holes 323, and the second protruding portion 32 is connected to the There is a second flow channel 325 in the trunk portion 34 , the second through holes 323 communicate with the second flow channel 325 , the end of the second abutment portion 36 not connected with the trunk portion 34 is a free end 361 , the first The free end 361 of the second abutment top 36 has a flange 362 protruding outward. In other possible embodiments, the number of the second abutting portion 36 and the second through hole 323 may be one.

Next, the combination of the first inner tube 20 and the second inner tube 30 will be described. The fitting portion 24 of the first inner tube 20 and the trunk portion 34 of the second inner tube 30 are fitted with each other. The end 221 and the free end 321 of the second protrusion 32 face two opposite directions respectively. Referring to FIG. 4 , the first flow channel 225 communicates with the second flow channel 325 .

Please refer to FIG. 1 , FIG. 2 , FIG. 4 , and FIG. 5 , the housing 40 has a peripheral wall 41 , a first end wall 42 and a second end wall 43 closing both ends of the peripheral wall 41 . In this preferred embodiment, in order to facilitate assembly, the peripheral wall 41 has an inner peripheral wall 412 and an outer peripheral wall 414 that can be engaged with each other, the inner peripheral wall 412 is connected to the first end wall 42, and the peripheral wall 414 is connected to the first The two end walls 43 are connected. The peripheral wall 41 , the first end wall 42 and the second end wall 43 together define a first accommodating space 44 . The first end wall 42 and the second end wall 43 each have an opening and extend from the opening. A first annular wall 45 and a second annular wall 46 extend outward from the edge. The first annular wall 45 defines a first channel 451, the second annular wall 46 defines a second channel 461, and the first annular wall 45 defines a second channel 461. The inner diameter of a channel 451 and the second channel 461 is smaller than the inner diameter of the peripheral wall 41 .

The first elastic member 50 has a head portion 52 , a body portion 56 and a fixing portion 59 . The head portion 52 extends from one side of the body portion 56 and forms a closed end, and the other side of the body portion 56 forms a closed end. Extending out to form an open end 561 , the body 56 has a second accommodating space 58 , the second accommodating space 58 communicates with the open end 561 , and the outer wall of the body 56 has a plurality of first accommodating spaces 58 . The elastic rings 563 protrude toward the peripheral wall 41 . The first elastic rings 563 are used to enhance the structural strength of the body, and having one of the first elastic rings can enhance the structural strength. The inner wall surface of the body 56 has a positioning groove 562 . The fixing portion 59 extends outward from the opening end 561 and is fixed between the inner peripheral wall 412 and the outer peripheral wall 414 . In other possible embodiments, the fixing portion can be fixed at other positions as long as it is fixed relative to the housing 40 .

The sealing element 60 is generally one-piece and has two parallel surfaces, one of which is attached to the inner wall surface of the second end wall 43 .

Please refer to FIGS. 4 and 5 , when the safety infusion connector 10 is assembled, the first protruding portion 22 faces the first annular wall 45 , and the first elastic member 50 is sleeved on the first protruding portion 22 so that the first protruding portion 22 is The protruding portion 22 passes through the open end 561 and is accommodated in the second accommodating space 58 , the positioning groove 562 of the first elastic member 50 is engaged with the flange 361 of the second abutting portion 36 , and the first elastic member The head 52 of 50 is located within the first annular wall 45 and seals the first channel 451 .

The first abutting portion 26 abuts against the sealing member 60 and the second end wall 43 , and the free end 321 of the second protruding portion 32 is accommodated in the groove 62 of the sealing member 60 .

Next, the state of use of the present invention will be described.

Please refer to FIG. 4 and FIG. 5 , when the user wants to infuse through the safety infusion connector 10 , he inserts a syringe nozzle (not shown in the figure) into the first annular wall 45 . The outer casing 40 does not move, so the first elastic member 50 is compressed and deformed, and the first through holes 223 of the first inner tube 20 are no longer covered by the first elastic member 50 . The second inner tube 30 that is engaged with each other also moves toward the second annular wall 46, so that the second protrusion 32 breaks through the seal 60 and enters the second channel 461, so that the syringe and the first flow channel 225 , the second flow channel 325 and the second channel 461 communicate with each other, so that the user can input the liquid or withdraw the liquid as required.

When the user wants to finish the infusion, he only needs to take out the nozzle of the syringe from the first ring wall 45, then the second inner tube 30 will be pulled by the compressed first elastic member 50 to move toward the first ring The direction of the wall 45 is reset, and the free end 321 of the second protrusion 32 returns to the groove 62, so that the sealing member 60 covers the second channel 461 again, and the first elastic member 50 is also reset to seal the first elastic member 50. A channel 451.

It should be noted that the first elastic member 50 seals the first channel 451 , the sealing member 60 seals the second channel 461 , and the double sealing structure makes the safety infusion connector 10 leak-proof and airtight. During the infusion process, only the second inner tube 30 is pushed, and the first abutting top 26 of the first inner tube 20 abuts against the sealing member 60 and the second end wall 43 and does not move, so the structure is quite stable.

In order to further increase the anti-leakage effect, the first elastic member 50 also has a neck 54 connecting the head 52 and the body 56 , and the outer diameter and the inner diameter of the neck 54 extend from the head 52 to the body 56 gradually expands, the free end 221 of the first protruding portion 22 is tapered and has a first side surface 227, the first through hole 223 is opened on the first side surface 227, and the first end wall 42 and the There is also a pressing portion 48 at the junction of the first ring wall 45 . The pressing portion 48 and the neck portion 54 are matched with the first side surface 227 , so that the pressing portion 48 presses against the neck portion 54 and the first side surface 227 . A side surface 227 increases the effect of sealing the first through holes 223 . Furthermore, the free end 321 of the second protruding portion 32 is tapered and has a second side surface 327, the second through hole 323 is opened on the second side surface 327, the sealing member 60 has a groove 62, the first The two side surfaces 327 are accommodated in the groove 62 , which further increases the sealing effect of the second through hole 323 .

In order to make the structure more stable, there is an elastic ring 80 between the sleeve portion 24 of the first inner tube 20 and the trunk portion 34 of the second inner tube 30 so that the first flow channel 225 and the second flow channel The 325 fits snugly.

It must be noted here that the above detailed description in conjunction with the accompanying drawings is only an embodiment provided to illustrate the technical content and features of the present invention. After the technical content and features of the invention, without departing from the spirit of the invention, various simple modifications, substitutions or reductions in components should all fall within the scope of protection required by the claims of the present invention.

Claims (6)

1. a safety infusion connector, is characterized in that, comprises: A first inner tube has a first protruding portion, a fitting portion and at least one first abutting portion, the first protruding portion and the first abutting portion are respectively connected with the fitting portion, and the first protruding portion is connected to the fitting portion. The free end has at least one first through hole, the first protruding portion has a first flow channel, and the first through hole communicates with the first flow channel; A second inner tube has a second protruding portion, a trunk portion and at least a second abutting top portion, the second protruding portion and the second abutting top portion are respectively connected with the trunk portion, and the free end of the second protruding portion There is at least one second through hole, the second protruding portion and the trunk portion have a second flow channel, the second through hole communicates with the second flow channel, and the free end of the second abutting top has a projecting outward flange; Wherein, the fitting portion and the trunk portion are fitted with each other, the first abutting top and the second abutting top are staggered, and the free end of the first protruding portion and the free end of the second protruding portion face two opposite directions respectively. , the first flow channel communicates with the second flow channel; A shell has a peripheral wall, a first end wall and a second end wall that close both ends of the peripheral wall, the peripheral wall, the first end wall and the second end wall together define a first accommodating space, the The first end wall and the second end wall each have an opening, and a first ring wall and a second ring wall extend outward from the opening. The first ring wall defines a first channel, and the second ring wall A second channel is formed around the wall; A first elastic member has a head, a body and a fixing portion, the head extends from one side of the body and forms a closed end, and the other side of the body extends to form a an open end, the body has a second accommodating space, the second accommodating space communicates with the open end, the inner wall surface of the body has a positioning groove, the fixing part is connected with the open end and fixed to the shell ;as well as a sealing member attached to the second end wall and abutted by the first abutting top; Wherein, the first protruding portion faces the first annular wall, and the first elastic member is sleeved on the first protruding portion, so that the first protruding portion passes through the open end and is accommodated in the second accommodating space, The positioning groove is engaged with the flange, the head is located in the first ring wall and seals the first channel, the second protrusion faces the second ring wall, and the body of the first elastic member is connected to the head A neck is also provided at the portion, and a pressing portion is also provided at the junction of the first end wall and the first ring wall, and the pressing portion presses the neck. 2 . The safety infusion connector of claim 1 , wherein the peripheral wall has an inner peripheral wall and an outer peripheral wall that can be engaged with each other, the inner peripheral wall is connected to the first end wall, and the peripheral wall is connected to the second end The walls are connected to each other, and the fixing portion is arranged between the inner peripheral wall and the outer peripheral wall. 3 . The safety infusion connector of claim 1 , wherein the first inner tube has two first abutting tops disposed opposite to each other, and the second inner tube has two second abutting tops disposed opposite to each other. 4 . 4 . The safety infusion connector of claim 1 , wherein an elastic ring is further provided between the sleeve portion of the first inner tube and the trunk portion of the second inner tube. 5 . 5 . The safety infusion connector according to claim 1 , wherein the free end of the first protruding portion is tapered and has a first side surface, and the first through hole is opened on the first side surface. 6 . 6 . The safety infusion connector according to claim 1 , wherein the free end of the second protruding portion is tapered and has a second side surface, the second through hole is opened on the second side surface, and the sealing member has a a groove, the second side is accommodated in the groove.

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