CN107693882A - Safety Infusion Connector - Google Patents

Abstract

The invention provides a safe infusion joint which is provided with a combined inner pipe, a first elastic piece, a sealing piece and a shell, wherein the first elastic piece seals an inlet of the shell, the sealing piece seals an outlet of the shell, and a double sealing structure enables the safe infusion joint to have better leakage-stopping and airtight effects; when in use, a part of the combined inner pipe is fixed, so the structure is stable.

Description

Safety Infusion Connector

technical field

The invention relates to a medical device, in particular to a safety infusion joint without sharp needles.

Background technique

In medical treatment, various infusion lines are often used to input or output various fluids for patients, such as dripping, adding medicaments, or drawing blood and so on. The infusion joint is used to connect with various infusion pipelines as a valve for liquid input or output. Especially as the emphasis on the safety of medical personnel is increasing day by day, safety infusion connectors that do not need to use sharp needles have been used by many medical units in recent years.

Existing safety infusion connectors can be roughly divided into two types. The first type only has a sealing structure. For example, the safety infusion connector disclosed in Taiwan Patent No. M407761 has an inner tube, and the opening of the inner tube is sealed with an elastic When opening, the elastic member deforms to expose the opening. This kind of structure is likely to have poor sealing effect due to the elastic relaxation of the elastic member.

The second type has a two-sealing structure, 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 casing has two openings, the elastic valve is accommodated in the casing and seals the two openings, and the elastic valve encloses 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 pushed and deformed by the external joint, so that the bidirectional conducting element stretches the elastic valve, and at the same time, the infusion channel communicates with the two openings.

In the aforementioned second type of safety infusion connector, although a sealing structure is added, the bidirectional conducting element is only supported and positioned by the elastic valve. The elastic valve must be squeezed and deformed every time it is used, and it can be expected that the elasticity will loosen after long-term use, which will cause the position of the bidirectional conducting element to be unstable and cause leakage.

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

Contents of the invention

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

To achieve the aforementioned objectives, 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 part, a fitting part and at least one first abutting part, the first protruding part and the first abutting part are respectively connected with the fitting part, and the free part of the first protruding part The end has at least one first perforation, the first protruding part has a first flow channel, and the first perforation communicates with the first flow channel; the second inner tube has a second protruding part, a body part and at least one second The top, the second protruding part and the second abutting part are respectively connected with the trunk part, the free end of the second protruding part has at least one second perforation, the second protruding part and the trunk part have a second flow channel, the second perforation communicates with the second flow channel, and the free end of the second abutting portion has a flange protruding outward; wherein the fitting portion fits with the trunk portion, and the first abutting portion Arranged alternately with the second abutting portion, the free end of the first protruding portion and the free end of the second protruding portion respectively face two opposite directions, the first flow channel communicates with the second flow channel; the shell has a peripheral wall and a first end wall and a second end wall closing both ends of the peripheral wall, the peripheral wall, the first end wall and the second end wall jointly enclose a first accommodating space, the first end wall and the second end wall Each of the two end walls has an opening and a first ring wall and a second ring wall extend outward from the edge of the opening, the first ring wall encloses a first channel, and the second ring wall encloses a first Two channels; the first elastic member has a head, a body and a fixed 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 closed end An open end is formed, a second accommodating space is provided in the body, the second accommodating space communicates with the open end, a positioning groove is formed on the inner wall of the body, the fixing part is connected with the open end and fixed on The shell; the sealing member is attached to the second end wall and is abutted by the first abutting portion; wherein the first protruding portion faces the first ring wall, and the first elastic member is sleeved on the first protruding portion , the first protruding part is accommodated in the second accommodating space through the opening end, the positioning groove engages with the flange, the head is located in the first ring wall and seals the first channel, The second protruding portion faces the second ring wall.

In the safety infusion connector disclosed in a preferred embodiment of the present invention, the peripheral wall has an inner peripheral wall and an outer peripheral wall that can engage with each other, the inner peripheral wall is connected to the first end wall, and the outer peripheral wall is connected to the second end wall Connected, the fixing part 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 abutment parts opposite to each other, and the second inner tube has two second abutment parts opposite to each other.

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

In the safety infusion connector disclosed in a preferred embodiment of the present invention, there is an elastic ring 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, and the first through hole is opened on the first side.

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, the second through hole is opened on the second side, and the sealing member has a concave The groove, the second side is accommodated in the groove.

In this way, the safety infusion joint disclosed by the present invention uses the first elastic member and the sealing member 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 The abutting top is abutted against the second end wall of the casing, and the structure remains stable in long-term use.

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

Description of drawings

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

Fig. 2 is a three-dimensional exploded view of the present invention.

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

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

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

【Symbol Description】

Safety infusion connector 10

first inner tube 20

First protrusion 22 Free end 221

First perforation 223 First flow channel 225

first side 227

Fitting part 24 First contact top 26

Second inner tube 30

Second protrusion 32 Free end 321

Second through hole 323 Second flow channel 325

second side 327

Torso 34 Second to Top 36

Free end 361 Flange 362

Shell 40

Surrounding wall 41 Inner peripheral wall 412

Outer peripheral wall 414 first end wall 42

Second end wall 43 First accommodation space 44

First ring wall 45 First channel 451

Second ring wall 46 Second channel 461

Pressing part 48

first elastic member 50

Head 52 Neck 54

Body 56 Open end 561

Positioning groove 562 First elastic ring 563

Second accommodation space 58 Fixing part 59

Seal 60 Groove 62

Elastic ring 80

detailed description

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

Please refer to Fig. 2, Fig. 3, Fig. 4, the first inner tube 20 has a first protruding portion 22, a fitting portion 24 and two first abutting portions 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. Two relative positions, the end of the first protruding portion 22 that is not connected to the sleeve portion 24 is its free end 221, the free end 221 of the first protruding portion 22 has two first through holes 223, and the first protruding portion 22 has two first through holes 223. There is a first flow channel 225 , and the first through hole 223 communicates with the first flow channel 225 . In other possible embodiments, the number of the first abutting 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 with the trunk portion 34 , and the other end is the second protruding portion 32 The free end 321 of the second abutting portion 36 is located at two opposite positions and 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 torso portion 34. There is a second flow channel 325 in the trunk portion 34, and the second perforations 323 communicate with the second flow path 325. The end of the second buttress portion 36 that is not connected with the trunk portion 34 is its free end 361. The free ends 361 of the two abutting tops 36 have a flange 362 protruding outward. In other possible embodiments, the number of the second propping 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 fits with the trunk portion 34 of the second inner tube 30 , the first abutting portion 26 and the second abutting portion 36 are arranged in a staggered manner, and the first protruding portion 22 is free The end 221 and the free end 321 of the second protruding portion 32 respectively face in two opposite directions. Please refer to FIG. 4 , the first channel 225 communicates with the second channel 325 .

Please refer to FIG. 1 , FIG. 2 , FIG. 4 , and FIG. 5 , the housing 40 has a peripheral wall 41 and a first end wall 42 and a second end wall 43 closing two 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 engage with each other, the inner peripheral wall 412 is connected to the first end wall 42, the outer peripheral wall 414 is connected to the second end wall The two end walls 43 are connected. The peripheral wall 41, the first end wall 42 and the second end wall 43 jointly enclose a first accommodating space 44, each of the first end wall 42 and the second end wall 43 has an opening and from the opening A first ring wall 45 and a second ring wall 46 extend outward from the edge, the first ring wall 45 encloses a first channel 451, and the second ring wall 46 encloses a second channel 461. The inner diameters of the first channel 451 and the second channel 461 are smaller than the inner diameter of the peripheral wall 41 .

The first elastic member 50 has a head 52, a body 56 and a fixing portion 59, the head 52 extends from one side of the body 56 and forms a closed end, the other side of the body 56 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, the outer wall of the body 56 has a plurality of first 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 of the body 56 has a positioning slot 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 member 60 is generally in the shape of a sheet and has two parallel surfaces, one of which is attached to the inner surface of the second end wall 43 .

Please refer to Fig. 4 and Fig. 5. When the safety infusion connector 10 is assembled, the first protruding part 22 faces the first ring wall 45, and the first elastic member 50 is sleeved on the first protruding part 22, so that the first protruding part 22 The protruding part 22 passes through the opening end 561 and is accommodated in the second accommodating space 58 , the positioning groove 562 of the first elastic member 50 engages with the flange 361 of the second abutting part 36 , and the first elastic member The head 52 of 50 is located in the first ring 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, a syringe nozzle (not shown) is inserted into the first ring wall 45, since the fixing part 59 is relatively The shell 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. 50 and the second inner tube 30 that are engaged with each other also move toward the second ring wall 46 jointly, so that the second protrusion 32 breaks through the sealing member 60 and enters the second channel 461, so that the syringe and the first flow channel 225 , the second flow channel 325 communicates with the second channel 461 , so that the user can input liquid or extract liquid as required.

When the user wants to end the infusion, he only needs to take out the nozzle of the syringe from the first ring wall 45, and the second inner tube 30 will be drawn toward the first ring by the compressed first elastic member 50. 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 channel 461. One channel 451.

It should be noted that the first elastic member 50 seals the first channel 451 , and the sealing member 60 seals the second channel 461 . The double sealing structure makes the safety infusion connector 10 leak-proof and air-tight. During the infusion process, only the second inner tube 30 is pushed, and the first abutting portion 26 of the first inner tube 20 abuts against the sealing member 60 and the second end wall 43 without moving, so the structure is quite stable.

In order to increase the anti-leakage effect, the first elastic member 50 also has a neck 54 connecting the head 52 and the body 56, the outer diameter and inner diameter of the neck 54 are from the head 52 to the body The direction of 56 gradually expands, the free end 221 of the first protruding portion 22 is tapered and has a first side 227, the first through hole 223 is opened on the first side 227, and the first end wall 42 is connected to the first side 227. The junction of the first ring wall 45 also has a pressing portion 48, the pressing portion 48, the neck 54 and the first side 227 are correspondingly matched, so that the pressing portion 48 presses the neck 54 and the second side 227. A side surface 227 increases the effect of sealing the first through holes 223 . Moreover, the free end 321 of the second protrusion 32 is tapered and has a second side 327, the second through hole 323 is opened on the second side 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 effect of sealing the second through hole 323 .

In order to make the structure more stable, there is also 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 325 fits tightly.

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 characteristics of the present invention. After the technical contents and features of the invention, without violating the spirit of the present invention, all kinds of simple modifications, replacements or reductions of components shall fall within the scope of protection requested by the claims of the present invention.

Claims (7)

1. a kind of safe infusion joint, it is characterised in that include：

One first inner tube, has one first protuberance, a fit portion and at least one first top, first protuberance and this One top is connected with the fit portion respectively, and the free end of first protuberance is with least one first perforation, first protrusion There is a first flow, first perforation communicates with the first flow in portion；

One second inner tube, has one second protuberance, a trunk and at least one second top, second protuberance and this Two tops are connected with the trunk respectively, and the free end of second protuberance is with least one second perforation, second protrusion Portion in the trunk with having a second flow channel, and second perforation communicates with the second flow channel, the free end of second top With the flange protruded outwardly；

Wherein, the fit portion and the mutual fit of the trunk, first top are staggered with second top, and this first The free end of protuberance and the free end of second protuberance are respectively facing two opposite directions, the first flow and the second flow channel Communicate；

One shell, there is a perisporium and close one first end wall and one second end wall at the perisporium both ends, the perisporium, the first end Wall and second end wall enclose structure and go out one first accommodation space jointly, first end wall and second end wall respectively have an opening and from The opening edge extends one first ring wall and one second ring wall outward, and first ring wall encloses structure and goes out a first passage, second ring Wall encloses structure and goes out a second channel；

One first elastic component, has a head, the whole body portion and a fixed part, the head extended by the side in the body portion and A blind end is formed, the opposite side in the body portion extends and forms an openend, has one second accommodation space in the body portion, Second accommodation space communicates with the openend, and the internal face in the body portion has a locating slot, the fixed part and the openend phase Connect and be fixed on the shell；And

One seal, it is attached at second end wall and is supported by first top；

Wherein, first protuberance is sheathed on first protuberance towards first ring wall, first elastic component, makes this first prominent Go out portion through the openend and be placed in second accommodation space, the locating slot engages with the flange, the head be located at this first In ring wall and seal the first passage, second protuberance is towards second ring wall.

2. safe infusion joint according to claim 1, wherein, the perisporium has the internal perisporium and one that can mutually fasten Periphery wall, the internal perisporium are connected with first end wall, and the periphery wall is connected with second end wall, and the fixed part is located at the internal perisporium Between the periphery wall.

3. safe infusion joint according to claim 1, wherein, first inner tube has be oppositely arranged 2 first to support Portion, second inner tube have 2 second tops being oppositely arranged.

4. safe infusion joint according to claim 1, wherein, also have at the body portion connection head of first elastic component One neck, the intersection of first end wall and first ring wall also have a pressure section, and the pressure section compresses the neck.

5. safe infusion joint according to claim 1, wherein, the fit portion of first inner tube and the body of second inner tube Also there is an elastic band between cadre.

6. safe infusion joint according to claim 1, wherein, the free end of first protuberance is into cone-shaped and have One first side, first perforation are opened in the first side.

7. safe infusion joint according to claim 1, wherein, the free end of second protuberance is into cone-shaped and have One second side, second perforation are opened in the second side, and the seal has a groove, and it is recessed that the second side is placed in this Groove.