Lengthened infusion connector

Abstract

The utility model discloses a lengthened infusion connector which comprises an upper cover, a valve element and a lower cover, a lengthened part is arranged at the top of the upper cover, the valve element is arranged in the upper cover, the lower cover is detachably matched with the upper cover, a valve needle tightly matched with the inner wall of the valve element is arranged in the lower cover, and the lengthened part is arranged at the top of the valve element. According to the utility model, the valve core has elasticity, when the valve core is matched with an infusion apparatus for infusion, liquid medicine enters the valve core from the valve port under the action of hydraulic pressure, and when the infusion is stopped, the valve core is recovered, the valve port is closed, and liquid return is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an extended infusion connector. Background Art

[0002] Ordinary infusion connectors do not have a positive pressure effect due to their single function. When the dosing needle or infusion set is withdrawn after clinical infusion and medication, the silicone rubber valve body in the infusion connector will recover its deformation, which will generate negative pressure in the connector. The negative pressure causes part of the drug solution just injected into the human body to flow back into the inner cavity of the connector along with the patient's blood. If not handled in time, it will cause embolism of the infusion line and easily cause infection and complications.

[0003] In order to solve the above problems, the present application designs an extended infusion connector to prevent the problem of fluid backflow. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above-mentioned and / or existing problems in the use of the extended infusion connector, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide an extended infusion connector, the valve core is elastic, when cooperating with the infusion set, under the action of hydraulic pressure, the liquid medicine enters from the valve port, when the infusion is stopped, the valve core is restored, the valve port is closed, and the liquid is prevented from returning.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] An extended infusion connector, comprising:

[0009] An upper cover, wherein an extension portion is provided on the top of the upper cover;

[0010] A valve core, wherein the valve core is arranged inside the upper cover;

[0011] The lower cover is detachably matched with the upper cover, the interior of the lower cover is provided with a valve needle which closely matches the inner wall of the valve core, the side wall of the valve needle is provided with a valve port located inside the valve core, and the bottom of the valve needle is provided with a liquid outlet channel extending out of the lower cover.

[0012] As a preferred solution of the extended infusion connector described in the utility model, the top of the extended part is provided with an external threaded end, the interior of the upper cover is provided with a slot, and the top of the lower cover is provided with a buckle that cooperates with the slot.

[0013] As a preferred solution of the extended infusion connector described in the utility model, the valve core is pagoda-shaped and made of silicone rubber, and an elastic expansion part is provided in the middle of the valve core, and the elastic expansion part is tightly fitted with the inner wall of the upper cover.

[0014] As a preferred solution of the extended infusion connector described in the utility model, an opening is provided on the top of the valve core.

[0015] As a preferred solution of the extended infusion connector described in the utility model, the outside of the liquid outlet channel is covered with a protective cap, and the outer wall of the protective cap is provided with anti-slip patterns.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the valve core of the extended infusion connector is elastic, and when the infusion device is used for infusion, the liquid medicine enters from the valve port under the action of hydraulic pressure, and when the infusion is stopped, the valve core is restored to close the valve port to prevent liquid return. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of an extended infusion connector of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of an extended infusion connector of the utility model;

[0020] Figure 3 The utility model is a schematic diagram of the exploded structure of an extended infusion connector.

[0021] 100, upper cover; 110, extension part; 120, external thread; 130, slot; 200, valve core; 210, elastic expansion part; 300, lower cover; 310, buckle; 320, valve needle; 321, liquid outlet channel; 322, valve port; 400, protective cap. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0023] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention in detail, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged at a general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0024] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] The utility model provides an extended infusion connector, the valve core is elastic, when infusion is carried out with an infusion device, the liquid medicine enters from the valve port under the action of hydraulic pressure, when the infusion is stopped, the valve core is restored, the valve port is closed, and liquid return is prevented.

[0026] Figure 1-Figure 3 The structure diagram of an embodiment of an extended infusion connector of the utility model is shown in FIG. Figure 1-Figure 3 In this embodiment, an extended infusion connector is provided, and its main body includes an upper cover 100, a valve core 200 and a lower cover 300.

[0027] The upper cover 100 is conveniently matched with the valve core 200 through the extension part 110. Specifically, the upper cover 100 is provided with the extension part 110 at the top. In this embodiment, the extension part 110 is provided with an external thread 120 at the top. The upper cover 100 is provided with a slot 130 inside, and the lower cover 300 is provided with a buckle 310 matched with the slot 130 at the top.

[0028] The valve core 200 is elastic. When the infusion is performed with the infusion set, the liquid medicine enters from the valve port 322 under the action of hydraulic pressure. When the infusion is stopped, the valve core 200 is restored to close the valve port 322 to prevent liquid from returning. Specifically, the valve core 200 is arranged inside the upper cover 100. In this embodiment, the valve core 200 is a pagoda made of silicone rubber. An elastic expansion part 210 is arranged in the middle of the valve core 200. The elastic expansion part 210 is tightly fitted with the inner wall of the upper cover 100, and an opening is arranged at the top of the valve core 200.

[0029] The lower cover 300 is used to be connected to the joint of the injection channel, and the liquid medicine is delivered to the injection channel through the valve needle 320. Specifically, the lower cover 300 and the upper cover 100 are detachably matched, and the interior of the lower cover 300 is provided with a valve needle 320 that tightly matches the inner wall of the valve core 200, and the side wall of the valve needle 320 is provided with a valve port 322 located inside the valve core 200, and the bottom of the valve needle 320 is provided with a liquid outlet channel 321 extending out of the lower cover 300. In this embodiment, the outside of the liquid outlet channel 321 is covered with a protective cap 400, and the outer wall of the protective cap 400 is provided with anti-slip grooves.

[0030] Combination Figure 1-Figure 3 , an extended infusion connector of this embodiment, the specific use process is as follows, when in use, the valve core 200 is squeezed by the infusion set, and the medicine is delivered after entering the opening of the valve core 200, and the medicine flows into the infusion channel through the valve port 322 channel on the valve needle 320 of the lower cover 300, and is then delivered into the human body. When the infusion is completed and the infusion set is removed, since the pagoda-shaped valve core 200 and the valve needle 320 of the lower cover 300 are tightly matched, the pre-filled capacity is only a small part of the inner cavity of the valve needle 320, and since the squeezed volume of the silicone valve core 200 can be ignored during use, there will be no liquid reflux during the use of the product.

[0031] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An extended infusion connector, characterized in that: include: An upper cover (100), wherein an extension portion (110) is provided at the top of the upper cover (100); A valve core (200), wherein the valve core (200) is arranged inside the upper cover (100); A lower cover (300) is detachably matched with the upper cover (100), the interior of the lower cover (300) is provided with a valve needle (320) which is tightly matched with the inner wall of the valve core (200), the side wall of the valve needle (320) is provided with a valve port (322) located inside the valve core (200), and the bottom of the valve needle (320) is provided with a liquid outlet channel (321) extending out of the lower cover (300).

2. The extended infusion connector according to claim 1, characterized in that: The top of the extension portion (110) is provided with an external thread (120) end, the interior of the upper cover (100) is provided with a slot (130), and the top of the lower cover (300) is provided with a buckle (310) that cooperates with the slot (130).

3. The extended infusion connector according to claim 2, characterized in that: The valve core (200) is in the shape of a pagoda and is made of silicone rubber. An elastic expansion portion (210) is provided in the middle of the valve core (200), and the elastic expansion portion (210) is tightly fitted to the inner wall of the upper cover (100).

4. The extended infusion connector according to claim 3, characterized in that: The top of the valve core (200) is provided with an opening.

5. The extended infusion connector according to claim 4, characterized in that: The outside of the liquid outlet channel (321) is covered with a protective cap (400), and the outer wall of the protective cap (400) is provided with anti-slip grooves.

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