Transfusion connector

Abstract

The utility model provides an infusion connector which is generally used in cooperation with an indwelling catheter such as an indwelling needle in a blood vessel, and liquid medicine can be infused into the blood vessel and blood or liquid can be extracted through the infusion connector. The infusion connector comprises a separation film, a fastener and a connector base. The separation film comprises a body; a cover cap is arranged at one end of the body, the body is provided with a channel capable of being opened and closed, and an inlet of the channel is formed in the cover cap; an axially-through cavity is formed in the connector base, the separation film is contained in the cavity, and a cap of the separation film is buckled to a first connector at one end of the connector base. The cap is provided with a flange extending into the cavity, and the flange is tightly connected with the connector base through the fastener. According to the infusion connector, the separation membrane is tightly connected to the connector base through the fastener, and therefore the problem that the separation membrane fails and cannot be sealed due to the fact that the separation membrane is brought into the infusion connector in the operation process can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a transfusion connector, especially a transfusion connector for cooperating with an intravascularly indwelling catheter such as an indwelling needle. BACKGROUND

[0002] The transfusion connector is mainly used for connecting an intravascularly indwelling catheter such as an indwelling needle or other medical infusion devices to form a closed liquid flow channel, ensuring that the medicinal liquid can be smoothly and aseptically transmitted from a transfusion container to the patient's body or blood or liquid is extracted from the patient's body. Among them, the transfusion connector has a separation membrane, which realizes complete sealing between other interfaces connected during the infusion process, ensuring that the medicinal liquid is not contaminated, thereby ensuring the safety and effectiveness of drug infusion. However, the separation membrane of the existing transfusion connector has the risk of failure, which is that the separation membrane is easily brought into the inside of the transfusion connector during the operation process, thereby failing to play a blocking role. Therefore, in view of the above problems, it is necessary to put forward a further solution. SUMMARY

[0003] The utility model aims at providing a transfusion connector to overcome the deficiencies in the prior art.

[0004] To achieve the above utility model purposes, the utility model provides a transfusion connector, which is used for connecting an intravascularly indwelling catheter such as an indwelling needle or other medical infusion devices; the transfusion connector comprises a separation membrane, a fastener and a connector seat;

[0005] The separation membrane comprises a body; one end of the body is provided with a cap, the body has an openable and closable channel, and the inlet of the channel is formed on the cap;

[0006] The connector seat has an axially through cavity inside, the separation membrane is accommodated in the cavity, and the cap is buckled on the first connector at one end of the connector seat;

[0007] The cap has a flange extending into the cavity, and the flange is tightly connected with the connector seat through the fastener.

[0008] As an improvement of the utility model transfusion connector, the body comprises a valve piece and a connecting part; one side of the valve piece is a plane, the other side is a convex tapered surface, and the outlet of the channel is formed on the tapered surface; the channel is formed in the connecting part, and one end of the channel extends to the inlet, and the other end of the channel extends to the outlet.

[0009] As an improvement of the utility model transfusion connector, one side of the valve piece abuts against the stepped surface inside the connector seat, and the outer circumferential surface of the valve piece abuts against the inner surface of the connector seat.

[0010] As the improvement of the utility model infusion connector, the fastener is a gasket; the gasket is arranged on the inner side of the turnup to press the turnup on the inner side wall of the cavity.

[0011] As the improvement of the utility model infusion connector, the inner side wall of the cavity is provided with an annular groove, and the turnup and the gasket are at least partially accommodated in the groove.

[0012] As the improvement of the utility model infusion connector, the other end of the connector seat is further provided with a second connector, and a cap is buckled on the second connector.

[0013] As the improvement of the utility model infusion connector, the connector seat comprises an upper seat and a lower seat; the upper seat is fixedly connected to the lower seat.

[0014] Compared with the prior art, the utility model has the beneficial effects that the separation membrane in the utility model infusion connector is tightly connected to the connector seat through the fastener, so that the separation membrane can be prevented from being brought into the infusion connector during operation, and the problem of invalidation of the separation membrane and failure of sealing is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0016] Figure 1 It is a three-dimensional schematic view of an embodiment of the utility model infusion connector.

[0017] Figure 2 It is Figure 1 It is a sectional view of the utility model infusion connector. DETAILED DESCRIPTION

[0018] The utility model will be described in detail in combination with the embodiments, and it should be explained that these embodiments are not the limitation of the utility model, and the equivalent transformation or replacement of the function, method or structure made by those skilled in the art according to these embodiments all belong to the protection scope of the utility model.

[0019] The utility model provides a kind of infusion connector, it is used to connect blood vessel in-dwelling catheter such as indwelling needle or other medical infusion instrument;The infusion connector includes: separation membrane, fastener and connector seat;The separation membrane includes body;The body one end is provided with cap, the body has the passage that can open and close, the entrance of the passage is formed on the cap;The connector seat inside has a axial through cavity, the separation membrane is housed in the cavity, and its cap is buckled on the first connector of the one end of the connector seat;The cap has flanging extending into the cavity, and the flanging is tightly connected with the connector seat by the fastener.

[0020] The technical scheme of the infusion connector of the utility model is exemplified below in conjunction with an embodiment.

[0021] As shown in Figure 1 、 2 The utility model provides a kind of infusion connector, it is used to connect blood vessel in-dwelling catheter such as indwelling needle or other medical infusion instrument.The infusion connector of this embodiment includes: separation membrane 10, fastener 20 and connector seat 30.

[0022] Among them, separation membrane 10 is connected with other infusion instrument to form airtight infusion channel during infusion, to ensure the safety and effectiveness of drug infusion.The separation membrane 10 includes body. Among them, the body one end is provided with cap 11, and the body has the passage 12 that can open and close, and the entrance 121 of the passage 12 is formed on the cap 11. It is thus provided to open the passage 12 when infusion after being connected with other infusion instrument, and to close the passage 12 when disconnection.

[0023] In one embodiment, the body includes: valve piece 13 and connecting part 14. Among them, the one side of valve piece 13 is plane, and the other side is convex taper face, and the outlet 122 of the passage 12 is formed on the taper face;The passage 12 is formed in connecting part 14, and one end thereof extends to the entrance 121, and the other end extends to the outlet 122. It is thus provided that the taper face design of separation membrane 10 has the elastic force of recovery deformation, and the elastic force makes separation membrane 10 have the tendency of closing, to play the role of separation.

[0024] The connector seat 30 inside has a axial through cavity 31, and the separation membrane 10 is housed in the cavity 31, and its cap 11 is buckled on the first connector 32 of the one end of the connector seat 30. In addition, the other end of the connector seat 30 is also provided with the second connector 33, and a protective cap 40 is buckled on the second connector 33 to play the role of protection. Among them, in order to realize connection, the first connector 32 is provided with external thread, and the second connector 33 is provided with internal thread. Based on the structure of the above-mentioned connector seat 30, the one side of valve piece 13 is abutted with the step face inside the connector seat 30, and the outer circumferential side surface of valve piece 13 is abutted with the inner side surface of the connector seat 30.

[0025] In one embodiment, the joint seat 30 comprises an upper seat 34 and a lower seat 35, wherein the upper seat 34 is fixedly connected to the lower seat 35. At this time, the first joint 32 is arranged at one end of the upper seat 34, and the second joint 33 is arranged at one end of the lower seat 35.

[0026] In order to realize that the separation membrane 10 is tightly connected to the joint seat 30, the cap 11 has a flange 110 extending into the cavity 31, and the flange 110 is tightly connected to the joint seat 30 through the fastener 20. In this way, it can be avoided that the separation membrane 10 is brought into the infusion joint during operation, thereby causing the separation membrane 10 to fail to seal.

[0027] In one embodiment, the fastener 20 is a grommet. At this time, the grommet is arranged on the inner side of the flange 110 to press the flange 110 against the inner side wall of the cavity 31, so that the separation membrane 10 will not be brought into the infusion joint during infusion operation under the continuous radial compression of the grommet. In order to facilitate the assembly of the flange 110 and the grommet, the inner side wall of the cavity 31 is provided with an annular groove, and at this time the whole or at least part of the flange 110 and the grommet are accommodated in the groove. In this way, the flange 110 and the grommet are limited in the axial direction by the groove, which further avoids the problem that the separation membrane 10 is brought into the infusion joint during operation.

[0028] In summary, the separation membrane in the infusion joint of the utility model is tightly connected to the joint seat through the fastener, so that it can be avoided that the separation membrane is brought into the infusion joint during operation, thereby causing the separation membrane to fail to seal.

[0029] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model.

[0030] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fluid connector for use in conjunction with an intravascularly indwelling catheter to infuse a medicinal fluid and to draw blood or fluid intravascularly, characterized by, The infusion connector comprises a separation membrane, a fastener and a connector seat; The separation membrane comprises a body, one end of which is provided with a cap, and the body has an openable and closable channel, the inlet of which is formed on the cap; The connector seat has an axially through cavity inside, the separation membrane is accommodated in the cavity, and the cap is buckled on the first connector at one end of the connector seat; The cap has a flange extending into the cavity, and the flange is tightly connected with the connector seat by the fastener.

2. The infusion adapter of claim 1, wherein, The body comprises a valve piece and a connecting part, one side of the valve piece is a plane, the other side is a convex tapered surface, and the outlet of the channel is formed on the tapered surface; the channel is formed in the connecting part, and one end of the channel extends to the inlet, and the other end of the channel extends to the outlet.

3. The infusion adapter of claim 2, wherein, One side of the valve piece abuts against the stepped surface inside the connector seat, and the outer circumferential surface of the valve piece abuts against the inner surface of the connector seat.

4. The infusion adapter of claim 1, wherein, The fastener is a gasket, which is arranged on the inner side of the flange to press the flange against the inner side wall of the cavity.

5. The infusion adapter of claim 4, wherein, The inner side wall of the cavity is provided with an annular groove, and the whole of the flange and the gasket is at least partially accommodated in the groove.

6. The infusion adapter of claim 1, wherein, The other end of the connector seat is also provided with a second connector, and a cap is buckled on the second connector.

7. The infusion adapter of any one of claims 1 to 6, wherein, The connector seat comprises an upper seat and a lower seat, and the upper seat is fixedly connected to the lower seat.

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