KR102240670B1 - Needle free type injection connector - Google Patents

Abstract

Disclosed herein relates to a needle-free type injection connector that prevents blood from flowing back to prevent internal blood contamination.
According to an embodiment of the present disclosure, the injection connector extends in a cylindrical shape from one end to the other end, and a portion of the inner surface is a housing and one end protruding in an annular shape toward the inside and the other end of the hollow penetrating between one end and the other end. Is coupled to one end of the housing to seal the hollow, and the other end includes a valve portion formed so that a central portion of one end extends toward the other end of the housing and surrounds a portion of the inner surface of the housing, and the other end The valve portion is cut from the central portion of one end to the central portion of the other end of the valve portion to form cut surfaces in close contact with each other.

Description

Needle-free type medical injection connector {NEEDLE FREE TYPE INJECTION CONNECTOR}

Disclosed herein is an injection connector, and more specifically, to an injection connector for connecting a needle-free type syringe to a medical device connected to a patient's body.

Unless otherwise indicated in the specification, the contents described in this identification item are not prior art to the claims of this application, and description in this identification item is not admitted to be prior art.

In general, a medical device including an infusion set for administering a drug solution to a patient is equipped with a connector for mixing and injecting a drug solution, and when a sharp needle such as an injection needle is used, the medical personnel or patient may be injured or infected by the needle. Because work occurs, recently, needle-free connectors that do not use needles are used.

However, the conventional connector has a disadvantage that the inside of the connector is contaminated by incident light including ultraviolet rays or external influences, while the blood flowing out of the patient's body flows backwards as the chemical solution is injected into the patient. .

Accordingly, there is a need for a technology that prevents contamination of blood flowing back into the connector during the process of injecting the chemical solution into the patient's body through the connector and preventing contamination of the connector due to an external environment.

In this regard, Korean Registered Utility Model Publication No. 20-0473750 discloses a needle-free type medical injection connector, and Korean Registered Utility Model Publication No. 20-0472824 discloses a needle-free type medical injection connector.

However, the conventional inventions do not disclose a technique for preventing contamination that occurs while the blood flows backward and remains.

It is to provide a needle-free type injection connector that prevents blood from contaminating inside by preventing the backflow of blood.

In addition, it is not limited to the above-described technical problems, and it is obvious that another technical problem may be derived from the following description.

According to an embodiment of the disclosure, the injection connector extends in a cylindrical shape from one end to the other end, and a portion of the inner surface is a housing protruding in a ring shape toward the inside and the other end of the hollow penetrating between one end and the other end, and one end of the housing It is coupled to one end of the hollow to seal the hollow, and the other end includes a valve portion formed to surround a portion of the inner surface of the housing and extending from the central portion of the one end toward the other end of the housing, the valve portion Incisions are made from the center of one end to the center of the other end of the valve part to form cut surfaces in close contact with each other.

In addition, the injection connector is fixed in an annular shape between the other end of the valve unit and a portion protruding inward from the inner surface of the housing, and further includes a fixing unit surrounding the withdrawal portion of the syringe inserted into the hollow through the cut surface. can do.

In addition, one end of the housing surrounds the other end of the valve part and the outer surface of the fixing part, and the other end extends to the other end of the housing, and has a ring shape facing the other end of the valve part with the fixing part therebetween. It may include; a first body on which the support is formed.

In addition, the first body has one end connected to the inside of the support part while being spaced apart from the fixing part to form a groove between the fixing part and one end, and the other end of the guide part extending in a cylindrical shape toward the other end of the housing. Can be formed.

In addition, the housing has one end coupled to one end of the valve part, the other end extending to the other end of the housing, and an inner part protruding in a ring shape to form a protrusion for pressing the other end of the valve part, and the other end It may further include a second body in which a cover surrounding one end of the body is formed.

In addition, the fixing unit may have one end connected to the fixing unit, the other end in close contact with the inner surface of the first body, and a packing unit formed to face each other on the same vertical line as the protrusion formed on the protrusion toward the protrusion. .

According to an exemplary embodiment of the present disclosure, the injection connector has an advantage of preventing a chemical solution or blood from flowing out of the hollow corresponding to the inside of the coupling portion of the housing toward the outside of the housing.

In addition, in the injection connector, when the end of the lead-out part inserted into the hollow is inserted into the center of the fixing part inside the hollow, the fixing part stably supports the draw-out part, and a part of the valve part is fixed inside the injection connector, so that the draw-out part is separated from the connector. It prevents the valve part from being dislodged during the process.

In addition, since the effects of the present invention described as described above are naturally exerted by the composition of the contents described regardless of whether the inventor recognizes or not, the above-described effects are only a few effects according to the contents described, and all effects that the inventor grasp or exist. It should not be admitted that it is written.

In addition, the effect of the present invention will have to be further grasped by the overall description of the specification, and even if it is not described in an explicit sentence, a person having ordinary knowledge in the technical field to which the described content belongs will have such an effect through the present specification. If it is an effect that can be recognized, it should be seen as the effect described in the present specification.

1 is a perspective view of an injection connector according to an embodiment of the present disclosure.
2 and 3 are exploded perspective views of the injection connector of FIG. 1 viewed from different angles.
4 is a cross-sectional view of the injection connector of FIG. 1 taken along line II′.
5 is a cross-sectional view taken along line II-II′ of the injection connector of FIG. 1.
6 is a cross-sectional view taken along line II′ of another state of the injection connector of FIG. 5.
7 is a cross-sectional view of an injection connector according to another embodiment of the present disclosure.

Hereinafter, a configuration, operation, and effect of the injection connector according to a preferred embodiment will be described with reference to the accompanying drawings. For reference, in the drawings below, each component is omitted or schematically illustrated for convenience and clarity, and the size of each component does not reflect the actual size, and the same reference numerals refer to the same component throughout the specification. And reference numerals for the same configuration in individual drawings will be omitted.

1 is a perspective view of an injection connector according to an embodiment of the present disclosure. 2 and 3 illustrate exploded perspective views of the injection connector of FIG. 1 viewed from different angles.

1 to 3, the injection connector 100 includes a housing 200, a valve part 400, and a fixing part 600.

The injection connector 100 is a connector that connects a needle-free type syringe inserted at one end of the front to a medical device connected to the rear of the other end, penetrates between one end and the other end, and passes a chemical solution to the medical device through a hollow 20 formed therein. Deliver.

One end of the housing 200 is formed in a cylindrical shape surrounding the front of the hollow 20, the other end extends toward the rear, and a part of the inner surface is formed in a ring shape that extends obliquely toward the inside and rear of the hollow 20 And a groove is formed inside the other end.

One end of the valve part 400 is formed in a circular shape and is coupled to one end of the housing 200 and covers the hollow 20, and the other end is partially extended and obliquely extended to surround a part of the inner surface of the housing 200. And is formed to be inserted into the groove.

The front of one end of the fixed part 600 is formed in a ring shape to form an inclined surface that is in close contact with the other end of the valve part 400 in the hollow 20, penetrates the center of one end of the valve part 400, and becomes a hollow 20. It surrounds the withdrawal part of the syringe to be inserted.

The rear surface of the other end of the fixing part 600 extends toward the rear by a predetermined distance, and is in close contact with a portion protruding inward from the inner surface of the housing 200 and is blocked from moving toward the rear.

Therefore, when the withdrawal part of the syringe penetrates one end of the valve part 400, passes through the other end of the valve part 400, and is inserted from the hollow 20 into the inside of the fixing part 600, from the withdrawal part to the hollow 20 The introduced chemical liquid is injected into the patient through a hose or other type of medical device connected to the inside of the other end of the housing 200.

4 is a cross-sectional view of the injection connector of FIG. 1 taken along line II′. 5 is a cross-sectional view of the injection connector of FIG. 1 taken along line II-II'. 6 is a cross-sectional view illustrating another state of the injection connector of FIG. 5 taken along line II′.

1 to 5, the housing 200 includes a first body 220 and a second body 240.

The first body 220 has an insertion part 222, a support part 224, a guide part 226, and a cover 228, and the second body 240 has a connector 241, a thread 242, 244. ), a protrusion 246 and a cover 228 are formed.

One end of the first body 220 is formed in a cylindrical shape surrounding the hollow 20 at the center of the housing 200 to surround the other end of the valve part 400 and the outer surface of the fixing part 600, and the other end of the housing ( 200) extends rearward.

One end of the second body 240 has threads 242 and 244 formed on the outer surface and has a cylindrical shape surrounding the hollow 20, and the other end extends rearward along the extension direction of the housing 200 and then inside A portion of the incline extends toward the inward and rearward, and the outer part extends and extends toward the rear.

Specifically, the insertion part 222 is formed in a cylindrical shape surrounding the hollow 20, the outer surface of the other end of the valve part 400 and the outer surface of the fixing part 600, and is inserted into the other end of the second body 240 And it is fixed to prevent the chemical solution flowing into the hollow 20 from flowing out.

One end of the support part 224 is connected to a part of the rear inner surface of the insertion part 222, and the other end is formed in a ring shape as a whole by extending inward of the hollow 20 in a ring shape, and the front surface of the fixing part 600 It is in close contact with the rear surface to support the fixing part 600.

One end of the guide part 226 is connected to a part of the rear inner surface of the support part 224 and extends in a ring shape by a predetermined distance toward the inside while spaced apart from the fixing part 600 and then extends in a tube shape toward the rear. do.

A groove 229 into which the end of the lead portion inserted into the hollow 20 is inserted is formed between the front surface of the guide portion 226 and the inner surface of the support portion 224, and the lead portion is inserted into the groove 229 In the front of the guide part 226 is in close contact with the withdrawal part.

One end of the cover 228 is connected to the rear outer surface of the insertion part 222, and after extending outward by a predetermined distance, it maintains a state spaced apart from the guide part 226 and extends in a tube shape toward the rear.

An expansion space 40 is formed between the inner surface of the cover 228 and the outer surface of the guide part 226, so that the chemical liquid flowing into the hollow 20 passes through the inside of the guide part 226 to the housing 200 Provides a space in which the guide unit 226 can be deformed in the process of moving to the connected medical device.

The connection pipe 241 has one end formed in the shape of a tube surrounding the hollow 20 located in the front, and the other end extends toward the rear and surrounds the valve part 400 inserted into the hollow 20, and the valve part 400 ) To form an expansion space (30) between the outer surface and the inner surface of the connection pipe (241).

One end of each of the threads 242 and 244 is connected to the connection pipe 241 so as to face each other with the connection pipe 241 interposed therebetween, and each other end is in the same direction along the axis of the extension direction of the housing 200. It spirally extends along the outer surface of the connection pipe 241.

One end of the protrusion 246 is connected to a portion inside the rear surface of the connection pipe 241, and the other end extends in a tube shape toward the rear and the inside of the hollow 20 so as to be in close contact with the other end of the second body 240.

One end of the cover 248 is connected to the outer part of the rear surface of the connection pipe 241, and the other end is extended toward the outside by a predetermined distance and then bent toward the rear, and extends rearward while surrounding the insertion part 222 It is in close contact with one end of the cover 228.

The valve part 400 includes a cover part 410, an expansion part 420, a cut surface 430, a packing part 435, inclined surfaces 440 and 450, a locking protrusion 460 and a protrusion 470. do.

The cover part 410 is formed in a circular plate shape, and a portion of the edge of the rear surface surrounds one end of the connection pipe 241 and is coupled with the connection pipe 241 to block the front of the hollow 20 from the external space.

One end of the expansion part 420 is connected to the rear surface of the connection pipe 241 in the form of a rectangular plate extending from the hollow 20 to both sides, and the other end extends in a rectangular parallelepiped shape, and the other end extends in a semicircle shape at the center of the other end. A protrusion 470 protruding toward is formed.

The cut surfaces 430 cut the cover part 410, the expansion part 420, and the protrusion 470 in a rectangular shape parallel to the upper and lower surfaces of the expansion part 420, and the front space and the hollow ( It is formed on the inner upper and lower inner surfaces of the valve unit 400 while connecting 20).

Therefore, each of the cut surfaces 430 includes the cover part 410, the expandable part 420, and the protrusion 470 formed by cutting each of the cover part 410, the expansion part 420, and the protrusion 470. Each of the upper and lower inner surfaces.

Referring to FIG. 5, a cut line 490 formed while cutting the center of the cover part 410, the expansion part 420, and the protrusion 470 is a cut surface 430 that faces at positions corresponding to the upper and lower parts. Are formed in close contact with each other.

One end of the packing part 435 extends obliquely from the edge of the other end of the expansion part 420 toward the rear and outside, and a portion of the other end edge is bent and extended toward the front so that the inner surface and the protrusion 246 of the insertion part 222 It is inserted between the outer surfaces of ).

The inclined surface 440 formed in front of the packing part 435 is in close contact with the other end of the protruding part 246, and the inclined surface 450 formed in the rear of the packing part 435 is formed at the front edge of the fixing part 600 It is in close contact with the inclined surface.

Therefore, the other end of the packing portion 435 is inserted between the protruding portion 246 and the fixing portion 600, and sealing the space between the hollow 20 and the inner surface of the insertion portion 222, into the hollow 20 The spilled chemical solution is prevented from flowing out through the insertion part 222 and the cover 248.

The locking protrusion 460 is formed to protrude from the other end of the packing part 435 by a predetermined distance toward the front, and is fixed between the outer surface of the protrusion 246 and the inner surface of the insertion part 222, and the protrusion 246 ) And the valve part 400 fixed between the insertion part 222 is prevented from being separated from the front.

For example, the locking protrusion 460 includes the cut-out surfaces 430 and the draw-out part in the process of being separated back to the outside after the draw-out part inserted between the cut-out surfaces 430 is coupled to the inside of the fixing part 600. The valve part 400 is prevented from being separated from the front of the housing 200 by the adhesive force therebetween, thereby preventing the chemical or blood inside the hollow 20 from flowing out and scattering.

Referring to FIG. 6, a tube-shaped withdrawal part 50 formed at the end of the syringe expands a gap cut in the center of the cover part 410 and moves toward the rear of the housing 200 to form a cut line 490. The cut surfaces 430 formed in are moved upward and downward, respectively, and are inserted into the hollow 20.

In a state in which the lead portion 50 is connected to the hollow 20, the outer surface of the lead portion 50 is in close contact with the cut surfaces 430, and the outer surface of the end of the lead portion 50 is It is inserted inside and is in close contact with the inner surface of the fixing part 600.

The inner side of the fixing part 600 prevents the withdrawal part 50 from shaking in a state in close contact with the withdrawal part 50 so that the chemical solution passes through the inside of the hollow 20 and the guide part 226 and is injected into the patient's body. The lead portion 50 is prevented from being separated from the front of the housing 200 due to a repulsive force generated during the process.

The end surface of the withdrawal part 50 is in close contact with the front one end of the guide part 226 so that the chemical liquid flows out toward the outer surface of the withdrawal part 50 while the chemical liquid flows into the inner hollow 20 of the guide part 226. Prevent it from becoming.

In the state where the withdrawal part 50 is inserted into the hollow 20, the outer surface of the expansion part 420 expands to the outside and is in close contact with the inner surface of the connection pipe 241, and at the same time, the protrusion 246 is inserted into the insertion part ( Since it expands toward the inner side of the 222, the protrusion 246 presses the locking protrusion 460, the packing part 435 is deformed, and the adhesion with the fixing part 600 is strengthened, so that the insertion of the withdrawal part 50 Accordingly, there is an advantage that the sealing force of the hollow 20 is improved.

7 shows cross-sectional views of an injection connector according to another embodiment of the present disclosure.

The injection connector 120 according to the present embodiment includes the packing units 620 and 630 of the fixing part 600, the protrusion 246a of the protrusion 246, and the holes 249a and 249b formed in the valve part 400 Except for these, since they are substantially the same as the injection connector 100 of FIGS. 1 to 6, the same reference numbers and names are used, and redundant descriptions are omitted.

7, the injection connector 120 includes the packing units 620 and 630 of the fixing part 600, the protrusion 246a of the protrusion 246, and the hole 249a formed in the valve part 400. , 249b) to improve the sealing force inside the hollow (20), and effectively prevents the reverse flow of the chemical.

In each of the upper and lower cut surfaces 430 facing each other with the cut line 490 of the valve part 400 therebetween, a semicircular groove is formed in the front and the rear of the valve part 400, respectively, and is connected to each other. It is formed of holes 249a and 249b.

When the lead portion 50 is inserted into the hollow 20, the outer surface of the lead portion 50 is in close contact with the cut surfaces 430, respectively, and each of the holes 249a and 249b is separated from each other in a semicircular shape. And is adsorbed with the outer surface of the withdrawal part 50.

Accordingly, the lead portion 50 has improved adhesion to the cut surface 430 through each of the holes 249a and 249b, and the chemical liquid inside the hollow 20 is forward along the outer surface of the lead portion 50 It is prevented from spilling out into the outer space of the building.

On the outer surface of the other end of the protrusion 246, it protrudes in a ring shape toward the outside from a position corresponding to the front of the locking protrusion 460, and the expansion part 420 opens as the withdrawal part 50 is inserted into the hollow 20. On the ground, a ring-shaped protrusion 246a formed while a portion of the other end of the protrusion 246 expands toward the outside presses the inner surface of the insertion part 222.

Therefore, when the withdrawal part 50 is inserted into the hollow 20, the chemical solution or blood inside the hollow 20 is firstly sealed between the fixing part 600 and the packing part 435, and the protrusion 246a and There is an advantage of being sealed secondarily between the inner surfaces of the insertion portion 222 and sealing in three stages between the cover 248 and the insertion portion 222.

One end of the packing unit 620 is connected to the inner rear surface of the fixing part 600 in a ring shape, and the other ends are separated from each other toward the rear and rear lower portions, and after extending, one end of the guide unit 226 is in close contact with each other and connected to each other. It is formed to be.

Accordingly, a ring-shaped space having a triangular cross section is formed inside the packing unit 620, and an inclined surface is formed in the front of the packing unit 620 so that the withdrawal part 50 is inserted into the hollow 20 Then, the edge of the end of the withdrawal part 50 deforms the inclined surface of the packing unit 620 and is seated in the groove 229.

A metal or polymer plate is embedded inside the inclined surface of the packing unit 620, and when the withdrawal part 50 deforms the inclined surface of the packing unit 620, the metal or polymer plate is bent to generate a sound, and the lead-out part 50 is fixed. It is possible to make the user aware that it is bound to the government 600.

One end of the packing unit 630 is connected to the front edge of the fixing part 600, and the other end is in close contact with the inner surface of the insertion part 222, and the position corresponding to the same vertical line as the protrusion 246a in a cylindrical shape Extends to the front.

Therefore, when the withdrawal part 50 is inserted into the hollow 20, and the inclined surface of the packing unit 620 is deformed, the packing unit 620 is the fixing part 600 and the guide It prevents inflow between the parts 226.

In addition, when the withdrawal part 50 is inserted into the hollow 20, the protrusion 246a moves toward the outside to press the packing unit 630, and the other end of the packing part 435 is inside the packing unit 630. Since the side surface is pressed, the chemical solution or blood flowing through the space between the packing part 435 and the fixing part 600 is prevented from flowing into the space where the protrusion part 246 is located.

Although preferred embodiments of the present invention have been described with reference to the accompanying drawings, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and represent all the technical ideas of the present invention. Since it is not, it should be understood that there may be various equivalents and modifications that may be substituted for them at the time of application. Therefore, the embodiments described above are to be understood as illustrative and non-limiting in all respects, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims and the All changes or modifications derived from the equivalent concept should be construed as being included in the scope of the present invention.

100, 120: injection connector
200: housing 400: valve part
220: first body 240: second body
222: insertion part 224: support
226: guide part 228: cover
241: connector 242: thread
246: protrusion 248: cover
410: cover portion 420: expansion portion
430: expansion part 440: slope
450: slope 460: stopping jaw
470: protrusion

Claims (6)

A housing extending in a cylindrical shape from one end to the other end and protruding in a ring shape toward the inside and the other end of the hollow through which a portion of the inner surface passes between the one end and the other end;
One end is coupled to one end of the housing to seal the hollow, and the other end extends from the hollow to the other end of the housing and surrounds a portion of the inner surface of the housing, and from the center of one end to the center of the other end. A valve part which is cut and formed with cut surfaces in close contact with each other;
Including; a fixing part which is fixed in a ring shape between the other end of the valve part and a part protruding inward from the inner surface of the housing, and surrounds the withdrawal part of the syringe inserted into the hollow through the cut surface, and
The housing has one end surrounding the other end of the valve part and the outer surface of the fixing part, the other end extending to the other end of the housing, and a ring-shaped support inside facing the other end of the valve part with the fixing part therebetween. A first body in which an addition is formed, and
One end is coupled to one end of the valve part, the other end extends to the other end of the housing, and an inner part protrudes in a ring shape to form a protrusion that presses the other end of the valve part, and the other end It includes a second body that is formed with a surrounding cover,
The fixing part comprises a packing unit having one end connected to the fixing part, the other end being in close contact with the inner side of the first body, and facing each other on the same vertical line as the protrusion formed on the protrusion toward the protrusion. Injection connector.
delete delete The method of claim 1, wherein the first body,
Injection characterized in that one end is connected to the inside of the support part in a state spaced apart from the fixing part to form a groove between the fixing part and one end, and the other end is formed with a guide part extending in a cylindrical shape toward the other end of the housing. connector.




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