CN211561352U - Silica gel elastomer multilayer self-sealing type needleless infusion joint - Google Patents

Abstract

The utility model discloses a be applied to clinical infusion field's a silica gel elastomer multilayer self-sealing formula needleless infusion joint, its structure is including connecting, silica gel elastomer and interface, silica gel elastomer is equipped with a plurality of sealed bulge loops in its inner surface is protruding along the axis, the coaxial branch of sealed bulge loop locates the both sides of annotating the liquid mouth of joint and constitutes upper portion sealing member and lower part sealing member, the upper portion sealing member includes that the overcoat surrounds in the first upper portion sealing ring and the sealed cover that connect the top and locate the second upper portion sealing ring that connects liquid mouth junction, first upper portion sealing ring with annotate liquid connector interference fit, and the middle part is provided with the top gap that is closed state under the natural state. This infusion connects utilizes the silica gel elastomer to realize that the multilayer is sealed, connects in the assurance infusion and idle and the application in the good fungus effect that hinders of in-process, has reduced the risk of clinical infusion liquid seepage, and can avoid metal accessories's application, provides the guarantee for the synchronous realization of medical treatment detection operation.

Description

Silica gel elastomer multilayer self-sealing type needleless infusion joint

Technical Field

The utility model relates to a silica gel elastomer multilayer self-sealing needleless infusion joint which is widely used in the field of clinical infusion.

Background

Currently, in the global medical infusion field, the needle-free infusion connector is developing towards the direction of needle-free puncture, and the needle-free infusion connector can be clinically used for being connected with a venous indwelling needle and an infusion apparatus to realize needle-free puncture or being connected with medical instruments such as picc for long-term tumor chemotherapy infusion. The needleless infusion joint replaces the original connecting joints such as a heparin cap, an intravenous infusion needle, a three-way valve and the like. The needleless infusion joint has the characteristics of wide application and huge market demand and consumption. Although needle-free infusion connectors are also currently available on the market. However, most of the prior needleless infusion connectors have large external dimensions, so that patients feel burdensome and uncomfortable when wearing the connectors on hands, and are inconvenient to carry and move. And the volume of the inner cavity of the infusion joint is large, the volume of the liquid medicine after infusion or injection is increased, a plurality of clinically expensive insulin and antitumor drugs and a large amount of liquid medicine residues are generated, the curative effect of the medicine is weakened, the curative effect is influenced, money is wasted, and the medical burden of a patient is increased. In addition, the liquid medicine passage inside the needleless infusion joint is complex, so that the structure dead angle is easy to generate, and the medical staff is not favorable for washing the inner cavity of the infusion joint. When the liquid medicine is retained in the passage of the needle-free infusion connector inner cavity, bacteria are easy to fix and the port of the interface connection infusion device is poor in sealing and bacterium-blocking performance, bacteria are easy to breed, and the sanitation quality of medical equipment is reduced. And the bacteria generated inside the medicine liquid can easily enter the blood vessel of the patient along with the medicine liquid, thereby bringing great threat to the quality effect of the patient. Some needle-free infusion connectors with blunt needle structures exist in the market, and metal parts are arranged in the connectors, so that on one hand, the metal parts are easy to rust and oxidize and blacken, adverse effects and psychological fear are generated on patients, on the other hand, once the patients use the needle-free infusion connectors, nuclear magnetic resonance image examination cannot be performed, and the synchronous operability of treatment operation is reduced.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the utility model is to provide a silica gel elastomer multilayer self sealss needleless infusion connects who promotes sealed protection quality.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a silica gel elastomer multilayer self-sealing formula needleless infusion connects, includes joint, silica gel elastomer and interface, connect and seted up liquid injection channel along the axis to establish to annotating the liquid connector in one of them side protrusion, the opposite side is for connecting location portion, annotate the liquid connector and wear to be equipped with the notes liquid mouth that is linked together with liquid injection channel near the side that connects the top, silica gel elastomer overcoat is in annotating the liquid connector and realize annotating the sealed operation of liquid mouth to it, the interface overcoat is in silica gel elastomer and realize one end and be connected being connected of location portion, and the other end sets up to annotate the liquid connector, annotate two flat square side openings that the liquid mouth was seted up for following axis direction symmetry, silica gel elastomer is equipped with a plurality of sealed bulge loops in its inner surface is protruding along the axis, sealed bulge loop is coaxial to be located the both sides of annotating the liquid mouth and is constituteed upper portion sealing And the second upper sealing ring is connected with the liquid injection port, the first upper sealing ring is in interference fit with the liquid injection port, and a top gap in a closed state in a natural state is arranged in the middle of the first upper sealing ring.

Further, the lower sealing element is a first lower sealing ring, a second lower sealing ring, a third lower sealing ring and a fourth lower sealing ring which are sequentially arranged at intervals.

Further, the silica gel elastomer includes location tip and ripple deformation portion, location tip endotheca is equipped with spacing bulge loop in annotating the liquid connector and outside its tip that is close to ripple deformation portion, connect and form the content cavity that is used for installing ripple deformation portion in annotating the liquid connector and connecting between the location portion, the internal diameter of content cavity is greater than annotates the liquid connector to form the spacing step corresponding with spacing bulge loop in its junction.

Further, the liquid injection channel is a conical structure channel with the inner diameter decreasing along the axial direction of the liquid injection connector.

Further, the interface is connected with the connection positioning portion through end faces, the annular outer surface of the connection positioning portion is of an octahedral prism structure and is an operation handheld position, and a plurality of reinforcing ribs are uniformly and convexly arranged on the outer surface of the interface along the axis direction.

The utility model has the advantages that:

1. the infusion connector realizes multilayer sealing of the upper side and the lower side of an injection port of the injection connector by using the silica gel elastomer, ensures good bacterium blocking effect of the infusion connector when the infusion connector is not used, simultaneously ensures the isolated sealing effect of an internal cavity and the outside during the application process of the connector, reduces the risk of clinical infusion liquid leakage, can avoid the application of metal fittings, and provides guarantee for the synchronous realization of medical detection operation;

2. the matching arrangement of the silica gel elastomer and the interface improves the connection and positioning effect of the structure, ensures the structure storage effect in the infusion operation process, and ensures the driving quality and the operation practicability;

3. the conical structure channel is arranged, so that the liquid diversion effect is improved, liquid cannot form dead angles and accumulation in the inner cavity, the volume of the inner cavity of the liquid injection channel is reduced, the internal residue of liquid medicine after infusion is greatly reduced, the waste of the liquid medicine is avoided, and the treatment effect is ensured;

4. the octahedral prism structure of the connecting positioning part and the reinforcing rib structure of the interface are matched, so that the surface anti-skidding effect of the structure is improved, medical workers can quickly and accurately connect the infusion set with the connector or connect other connector parts, and the medical quality is guaranteed.

Drawings

FIG. 1 is a schematic view of the connection structure of the multi-layer self-sealing type needleless infusion connector made of silicone elastomer of the present invention;

FIG. 2 is an enlarged view of the structure of the area A in FIG. 1;

FIG. 3 is an enlarged view of the structure of the area B in FIG. 1;

FIG. 4 is an enlarged view of the structure of the area C in FIG. 1;

FIG. 5 is a front view of the joint of the present invention;

FIG. 6 is a front view of the structure of the silicone elastomer of the present invention;

fig. 7 is a front view of the connection structure of the interface of the present invention;

FIG. 8 is a front view of the connection external part of the silicone elastomer multilayer self-sealing needleless infusion connector of the present invention;

FIG. 9 is a schematic view of the connection structure of the silicone elastomer multilayer self-sealing needleless infusion connector and the infusion port of the present invention;

labeled as: 1. a joint; 11. a liquid injection channel; 12. a liquid injection connector; 121. a joint top end; 122. a liquid injection port; 13. connecting a positioning part; 2. a silicone elastomer; 21. a first upper seal ring; 22. a second upper seal ring; 23. a first lower seal ring; 24. a second lower seal ring; 25. a third lower seal ring; 26. a fourth lower seal ring; 27. positioning the end portion; 271. a limit convex ring; 28. a corrugated deformation portion; 3. an interface; 31. a liquid injection connector; 32. a content chamber; 33. reinforcing ribs; 4. an infusion port.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

The structure of the needleless infusion joint is shown in figure 1 and comprises a joint 1, a silica gel elastomer 2 and a port 3. This connect 1 to offer the priming passageway 11 of the toper structure that the internal diameter reduces gradually along the axis, can promote the matching effect rather than annotating the toper structure of liquid attach fitting 12 on the one hand, and the usable straight smooth surface of on the other hand reduces internal friction and promotes the water conservancy diversion effect of inner passage, guarantees inside liquid circulation rate. Meanwhile, the conical structural design can reduce the volume of the inner cavity of the needleless infusion connector, the volume of the inner cavity of the needleless infusion connector can be only 0.0256ml and is far lower than the volume of 0.15 ml-0.16 ml of a common needleless infusion connector on the market at present, the residual quantity of liquid medicine after infusion is further reduced, the application rate of the liquid medicine is improved, and the treatment effect is ensured. Two flat square side holes communicated with the liquid injection channel 11 are symmetrically arranged on the side surface of the liquid injection connector 12 close to the connector top end 121 in a penetrating way to serve as liquid injection ports 122, so that the communication effect with the external infusion port 4 is ensured. As shown in fig. 5, one side of the connector 1 is provided with the liquid injection connector 12, and the other end thereof is provided with the connection positioning portion 13, and the annular outer surface of the connection positioning portion 13 is provided with the surface structure of an octahedral prism, so that the operation force application effect is improved as the operation handheld position, and the medical operation quality is guaranteed. The structure of the silicone elastomer 2 sleeved on the liquid injection connector 12 is shown in fig. 3 to 4, and a plurality of sealing convex rings are convexly arranged on the inner surface of the silicone elastomer along the axis. The sealing convex rings are coaxially and separately provided at both sides of the injection port 122 to constitute an upper sealing member and a lower sealing member, thereby performing a segmental sealing operation on the upper and lower sides of the injection port 122, respectively. First upper portion sealing ring 21 overcoat of upper portion sealing member surrounds and connects top 121 to be closed state's top gap under the position of connecting top 121 is provided with the natural state in its middle part promptly towards the position that connects in the middle part, cooperate with silica gel elastomer 2 simultaneously and realize the top seal state under the natural state, and then realize the good fungus effect that hinders, the other end of silica gel elastomer 2 is contradicted simultaneously and is sealed in the terminal surface of connecting location portion 13, guarantees to connect sealed effect. The second upper sealing ring 22 of the upper sealing element is sleeved on the joint of the joint top end 121 and the liquid injection port 122 in a sealing manner, so that the gap between the silica gel elastomer 2 and the joint top end 121 is sealed and filled, and the upper multi-layer sealing effect is realized. In addition to the above-mentioned arrangement method, the second upper sealing ring 22 may also be arranged at the joint of the silicone elastomer 2 and the joint top end 121. The lower seal is a first lower seal ring 23, a second lower seal ring 24, a third lower seal ring 25 and a fourth lower seal ring 26 which are arranged in sequence at intervals. In the figure, the first lower seal ring 23 and the second lower seal ring 24 are disposed at positions close to the injection port 122, and the third lower seal ring 25 and the fourth lower seal ring 26 are disposed at positions close to the connection positioning portion 13. The sealing rings are matched to form six sealing structures, the sealing effect of the structures in the application process and in the idle state is guaranteed, and the number and the positions of the sealing rings can be set according to the actual application requirements except the setting method, so that the matching with the medical protection requirements is guaranteed, and the application effect is guaranteed. Meanwhile, the structure of the silicone elastomer 2 is shown in fig. 6 and is composed of a positioning end portion 27 and a corrugated deformation portion 2. The positioning end 27 and the corrugated deformation part 2 are respectively corresponding to the liquid injection connecting port 31 and the content chamber 32 of the interface 3, and a limit convex ring 271 is convexly arranged at the connecting part. The inner diameter of the inner cavity 32 of the interface 3 is larger than the liquid injection connecting port 31, and a limit step corresponding to the limit convex ring 271 is formed at the joint of the inner cavity and the liquid injection connecting port, so that the limit convex ring 271 is stopped and positioned. The structure of the interface 3 is as shown in fig. 7, the end of the interface 3 externally sleeved on the silicone elastomer is connected with the end face of the connection positioning portion 13, the liquid injection connecting port 31 is the other end, a plurality of reinforcing ribs 33 are uniformly and convexly arranged on the outer surface of the interface 3 along the axial direction, and an external thread is arranged on the outer surface close to the liquid injection connecting port 31, so that the connection positioning quality with the subsequent infusion interface 4 is ensured. And the silica gel elastomer 2 and the liquid injection connecting port 31 are in interference sealing fit, so that the influence of the external environment on the internal cavity is avoided.

In the application process, the joint 1, the silicone elastomer 2 and the interface 3 are firstly connected into the structure shown in fig. 1. At this time, the top of the silicone elastomer 2 and the interface 3 are in a sealed state, i.e. a sealing effect with the injection connection port 31 is ensured. In the upper portion of injection port 122, silicone elastomer 2 is in a sealed state in which the upper portion of injection port 122, that is, the side surface position of joint tip 121, is tightly fitted by second upper seal ring 22, and the upper portion of joint tip 121 is sealed by first upper seal ring 21. The lower part of the injection port 122 performs a tight sealing operation on the injection connector 12 through four sealing rings, namely, the first lower sealing ring 23, the second lower sealing ring 24, the third lower sealing ring 25 and the fourth lower sealing ring 26, so as to ensure the sealing effect of the needleless infusion connector in cooperation with the upper sealing member. And the silica gel elastomer 2 realizes relative positioning under the matching action of the limiting convex ring 271 and the internal structure of the interface 3, ensures the relative position of the interface 3, and then forms the connecting structure as shown in the figure.

In use, as shown in fig. 9, the infusion port 4 (such as a connector of an infusion set or an injector connector) is screwed into the needleless infusion connector, namely, enters from the liquid injection connecting port 31 of the interface 3, and the end face is abutted against the end part of the silicone elastomer 2. As the screw-in depth increases, the silicone elastomer 2 continues to move toward the joint tip 121, so that its end passes through the top gap of the first upper sealing ring 21. As the depth of access continues to be screwed in, the end of the infusion port 4 of the infusion set or syringe is sleeved over the injection connector 12. When the first upper sealing ring 21 moves to a position lower than the liquid injection port 122 under the pushing-down driving action of the infusion port 4, the liquid in the infusion port 4 enters the liquid injection channel 11 of the needle-free infusion connector from the liquid injection port 122 of the needle-free infusion connector, enters an indwelling needle, picc or other instruments from the inner cavity of the needle-free infusion connector, and finally enters a blood vessel. After the use is finished, the transfusion port 4 is moved out under the action of the medical staff, and then the silica gel elastic body 2 moves synchronously under the action of the self elasticity, so that the structure shown in the figure 1 is recovered. The top gap of the silicone elastomer 2 is automatically closed under the self-rebounding force, and the upper part of the liquid injection port 122 of the connector liquid injection connector 2 and the first upper sealing ring 21 and the second upper sealing ring 22 of the silicone elastomer 2 are automatically in a sealing state. The lower part of the liquid injection port 122 is always in a sealing state with the four sealing rings of the first lower sealing ring 23, the second lower sealing ring 24, the third lower sealing ring 25 and the fourth lower sealing ring 26, so that the application sealing effect of the device is ensured.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (5)

1. The utility model provides a silica gel elastomer multilayer self-sealing formula needleless infusion connects, includes joint (1), silica gel elastomer (2) and interface (3), liquid injection channel (11) have been seted up along the axis to connect location portion (13) for annotating liquid connector (12) in one of them side protrusion, the opposite side, annotate liquid connector (12) and wear to be equipped with liquid injection mouth (122) that are linked together with liquid injection channel (11) near the side of joint top (121), silica gel elastomer (2) overcoat is in annotating liquid connector (12) and realize annotating the sealed operation of liquid mouth (122) to it, interface (3) overcoat is in silica gel elastomer and realizes one end and the connection of being connected location portion (13), and the other end sets up to annotate liquid connector (31), its characterized in that, annotate two flat square side openings that liquid mouth (122) are seted up for following the axis direction symmetry, silica gel elastomer (2) are equipped with a plurality of sealed bulge loops in its inner surface is protruding along the axis, the coaxial branch of sealed bulge loop is located the both sides of annotating liquid mouth (122) and is constituteed upper portion sealing member and lower part sealing member, the upper portion sealing member includes that the overcoat surrounds in first upper portion sealing ring (21) and the seal cover that connect top end (121) and annotate second upper portion sealing ring (22) of liquid mouth (122) junction, first upper portion sealing ring (21) and notes liquid connector (31) interference fit, the middle part of first upper portion sealing ring (21) is provided with the top gap that is closed state under the natural state.

2. The silicone elastomer multilayer self-sealing needleless infusion joint according to claim 1, wherein the lower sealing member is a first lower sealing ring (23), a second lower sealing ring (24), a third lower sealing ring (25) and a fourth lower sealing ring (26) which are arranged at intervals in sequence.

3. The silicone elastomer multilayer self-sealing needleless infusion joint according to claim 1, wherein the silicone elastomer (2) includes a positioning end portion (27) and a corrugated deformation portion (28), the positioning end portion (27) is sleeved in the liquid injection connecting port (31) and is provided with a limiting convex ring (271) at an end portion thereof close to the corrugated deformation portion (28), the joint (1) forms a content chamber (32) for installing the corrugated deformation portion (28) between the liquid injection connecting port (31) and the connection positioning portion (13), an inner diameter of the content chamber (32) is larger than the liquid injection connecting port (31), and a limiting step corresponding to the limiting convex ring (271) is formed at a connection portion thereof.

4. The silicone elastomer multilayer self-sealing needleless infusion connector according to claim 1, wherein the liquid injection channel (11) is a tapered channel with a decreasing inner diameter in the axial direction toward the liquid injection connector (12).

5. The silicone elastomer multilayer self-sealing needleless infusion joint according to claim 1, wherein the interface (3) and the connection positioning portion (13) are end-face connected, the annular outer surface of the connection positioning portion (13) is provided with an octahedral prism structure and is a hand-held position for operation, and the outer surface of the interface (3) is uniformly provided with a plurality of reinforcing ribs (33) in a protruding manner along the axis direction.

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