Rotary infusion connector

Abstract

The utility model particularly relates to a rotary infusion connector which comprises a male Luer connector, a female Luer connector and a middle connecting piece, one end of the middle connecting piece is connected with the female Luer connector in a sealing mode, and the other end of the middle connecting piece is inserted into a groove of the male Luer connector and matched with the male Luer connector in a rotating mode. A fluid channel is arranged in the middle connecting piece and communicated with the male Luer connector and the female Luer connector. A step structure is arranged at the rotating matching position of the middle connecting piece and the male Luer connector, a sealing ring is arranged in the step structure, an eccentric annular groove is formed in the side, facing the male Luer connector, of the sealing ring, and the annular groove divides one side of the sealing ring into two parts. The thickness of the side close to the middle connecting piece fluid channel is larger than that of the side away from the middle connecting piece fluid channel. The infusion connector has the advantages that the infusion connector can rotate under the condition that the infusion connector is not dismantled; due to the double-sealing structure, the fault tolerance of product sealing is achieved, and the sealing performance of the rotary infusion connector is better guaranteed.

Description

Technical Field

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

[0002] In medical practice, Luer infusion connectors are widely used. This type of infusion connector simplifies the management process of medical fluids. Medical staff can easily switch multiple infusion bags without frequently plugging and unplugging the patient's infusion needle, thereby improving work efficiency and reducing the pain of patients. Secondly, Luer infusion connectors allow multiple compatible fluids to be managed using the same pipeline, further reducing the number of wounds on the patient and facilitating the patient's recovery.

[0003] However, with the widespread use of Luer infusion connectors, their problems have gradually emerged. The components of this type of connector are fixedly connected, and the front and rear connector components cannot be rotated or steered. When the infusion connector needs to be rotated or steered according to the diagnosis and treatment goals and methods, the original infusion connector needs to be removed and reinstalled to adapt to the new infusion connector position requirements. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a rotary infusion connector, which is used to realize the rotation and steering of the infusion connector without dismantling and reinstalling the infusion connector.

[0005] In order to achieve the above-mentioned purpose, a rotary infusion connector is designed, comprising a Luer male connector and a Luer female connector, and also comprising: an intermediate connector, one end of which is sealed and connected to the Luer female connector, and the other end of which is inserted into the groove of the Luer male connector and rotatably cooperates with the Luer male connector, and a fluid channel is provided in the intermediate connector to connect the Luer male connector and the Luer female connector; a step structure is provided at the rotational cooperation position between the intermediate connector and the Luer male connector, a sealing ring is provided in the step structure, and an eccentrically arranged annular groove is provided on the side of the sealing ring facing the Luer male connector, and the annular groove divides one side of the sealing ring into two parts, and the thickness of the side close to the fluid channel of the intermediate connector is greater than that of the side away from the fluid channel of the intermediate connector.

[0006] Preferably, one end of the Luer female connector of the utility model is inserted into the fluid channel of the intermediate connector and is interference fit or bonded with the intermediate connector, so that the Luer female connector and the intermediate connector are sealed and relatively fixed.

[0007] Preferably, the outer wall of the intermediate connector on the side close to the Luer male connector of the utility model is provided with a step structure, and a protrusion is also provided in the middle of the intermediate connector, the protrusion is located in the groove of the Luer male connector, and the outer edge of the groove of the Luer male connector is provided with a retaining edge for clamping the protrusion of the intermediate connector.

[0008] Preferably, the Luer male connector body and the groove portion of the utility model are formed in one piece, and after the intermediate connector is installed in the Luer male connector groove, the retaining edge portion is formed by a hot melt process.

[0009] Preferably, a side of the fluid channel in the Luer male connector of the present invention close to the middle piece is provided with an inclined surface so that the middle piece can be displaced toward one side of the Luer male connector.

[0010] Preferably, the Luer female connector of the present invention can be replaced with a second Luer male connector, one end of which is inserted into the fluid channel of the intermediate connector and is interference fit or bonded to the intermediate connector, so that the second Luer male connector is sealed and connected to the intermediate connector, and the two are relatively fixed.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] 1. The infusion connector using the Luer connector structure can be rotated without being disassembled.

[0013] 2. When the middle piece and the Luer female connector rotate, the sealing between the middle piece and the Luer male connector is ensured, thereby ensuring the sealing of the rotating infusion connector.

[0014] 3. The double sealing structure has the fault tolerance of product sealing and better ensures the sealing of the rotary infusion connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 , a three-dimensional diagram of the first embodiment of the utility model;

[0016] Figure 2 , a three-dimensional diagram of the first embodiment of the utility model;

[0017] Figure 3 , a three-dimensional cross-sectional view of the first embodiment of the utility model;

[0018] Figure 4 , a front cross-sectional view of the first embodiment of the utility model;

[0019] Figure 5 , a three-dimensional cross-sectional view of the second embodiment of the utility model;

[0020] In the figure: 1 Luer male connector; 1.1 groove; 1.2 stop edge; 1.3 inclined surface; 2 Luer female connector; 3 intermediate connector; 3.1 fluid channel; 3.2 step structure; 3.3 sealing ring; 3.4 annular groove; 3.5 sealing ring on the side of the fluid channel close to the intermediate connector; 3.6 sealing ring on the side of the fluid channel away from the intermediate connector; 3.7 protrusion; 4 second Luer male connector. DETAILED DESCRIPTION

[0021] In order to make the purpose, principle and structure of the utility model clearer, it is further described below in conjunction with the drawings and specific embodiments.

[0022] Embodiment 1:

[0023] The first embodiment of the utility model provides a rotary infusion connector, comprising: a Luer male connector 1, a Luer female connector 2 and an intermediate connector 3.

[0024] The Luer male connector 1 is provided with a groove 1.1, and the outer edge of the groove 1.1 is provided with a retaining edge 1.2 for holding the main intermediate connector. The Luer male connector 1 body and the groove 1.1 are formed by an integrated molding process. After the intermediate connector is installed in the Luer male connector groove 1.1, the retaining edge 1.2 is formed by a hot melt process. A side of the fluid channel in the Luer male connector 1 close to the intermediate component 3 is provided with an inclined surface 1.3 so that the intermediate component can be displaced toward one side of the Luer male connector.

[0025] One end of the Luer female connector 2 is inserted into the fluid channel 3.1 of the intermediate connector 3 and is interference-fitted or bonded to the intermediate connector 3, so that the Luer female connector 2 and the intermediate connector 3 are sealed and relatively fixed.

[0026] One end of the intermediate connector 3 is sealed with the Luer female connector 2, and the other end is inserted into the groove 1.1 of the Luer male connector 1, and rotates with the Luer male connector 1. A fluid channel 3.1 is provided in the intermediate connector 3 to connect the Luer male connector 1 and the Luer female connector 2; a step structure 3.2 is provided at the rotational position of the intermediate connector 3 and the Luer male connector 1, and a sealing ring 3.3 is provided in the step structure 3.2. The sealing ring 3.3 is provided with an eccentrically arranged annular groove 3.4 on the side facing the Luer male connector 1, and the annular groove 3.4 divides one side of the sealing ring 3.3 into two parts, and the thickness of the side 3.5 close to the fluid channel of the intermediate connector is greater than the thickness of the side 3.6 away from the fluid channel of the intermediate connector. A protrusion 3.7 is also provided in the middle of the intermediate connector 3, and the protrusion 3.7 is located in the groove 1.1 of the Luer male connector 1, and the outer edge of the groove 1.1 of the Luer male connector 1 is provided with a retaining edge 1.3 for clamping the protrusion 3.7 of the intermediate connector 3.

[0027] It is worth mentioning that:

[0028] The positions of the Luer male connector 1 and the Luer female connector 2 can be interchanged.

[0029] When the assembly is completed, due to the interference fit between the sealing ring 3.3 and the step structure 3.2, the sealing ring 3.3 continuously provides a pre-pressure for the Luer male connector 1 and the intermediate connector 3, so that the protrusion 3.7 and the groove 1.1 begin to be pressed and sealed, and the protrusion 3.7 is pressed and fitted on the retaining edge 1.2.

[0030] When the Luer female connector 2 is pushed toward the Luer male connector 1, the sealing ring 3.3 can be slightly deformed due to the circular groove 3.4 eccentrically arranged toward the Luer male connector 1 in the sealing ring 3.3, and a movable gap is formed between the protrusion 3.7 and the groove 1.1 and the retaining edge 1.2. And since the thickness of the sealing ring on the side 3.5 close to the fluid channel of the intermediate connector is greater than the side 3.6 away from the fluid channel of the intermediate connector, the sealing ring has a tendency to deform toward the fluid channel 3.1, and a movable gap is also formed between the sealing ring 3.3 and the step structure 3.2. At this time, the fixedly connected intermediate connector 3 and the Luer female connector 2 can rotate freely in the Luer male connector 1. Since the thickness of the sealing ring on the side 3.5 close to the fluid channel of the intermediate connector is greater than the side 3.6 away from the fluid channel of the intermediate connector, the deformation degree of the sealing ring on the side 3.5 close to the fluid channel of the intermediate connector is much smaller than the side 3.6 away from the fluid channel of the intermediate connector, which ensures the sealing between the fluid channel 3.1 and the Luer male connector 1 when the Luer female connector 2 is pushed. In addition, a bevel 1.3 is provided on the fluid channel in the Luer male connector 1, which can guide the end of the intermediate connector 3 to be inserted into the fluid channel of the Luer male connector 1 and to have an interference fit when being pushed forward, thereby further ensuring the sealing between the intermediate connector 3 and the Luer male connector 1 when rotating.

[0031] Embodiment 2:

[0032] In this embodiment, the Luer female connector 1 can be replaced with a second Luer male connector 4, one end of which is inserted into the fluid channel 3.1 of the intermediate connector 3, and is interference-fitted or bonded with the intermediate connector 3, so that the second Luer male connector 4 is sealed and connected to the intermediate connector 3, and the two are relatively fixed.

[0033] The above is only a specific implementation method of this utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the utility model, according to the technical solution and new concept of the utility model, shall be covered by the protection scope of the utility model.

Claims

1. A rotary infusion connector, comprising a Luer male connector and a Luer female connector, characterized in that Also includes An intermediate connector, one end of which is sealed and connected to the Luer female connector, and the other end of which is inserted into the groove of the Luer male connector and rotatably matched with the Luer male connector, and a fluid channel is provided in the intermediate connector to connect the Luer male connector and the Luer female connector; A step structure is provided at the rotational cooperation position between the intermediate connector and the Luer male connector, a sealing ring is provided inside the step structure, an eccentrically arranged annular groove is provided on the side of the sealing ring facing the Luer male connector, the annular groove divides one side of the sealing ring into two parts, and the thickness of the side close to the fluid channel of the intermediate connector is greater than that of the side away from the fluid channel of the intermediate connector.

2. A rotary infusion connector as claimed in claim 1, characterized in that One end of the Luer female connector is inserted into the fluid channel of the intermediate connector and is interference-fitted or bonded to the intermediate connector, so that the Luer female connector and the intermediate connector are sealed and relatively fixed.

3. A rotary infusion connector as claimed in claim 1, characterized in that The outer wall of the intermediate connector close to the Luer male connector is provided with a step structure, and the middle part of the intermediate connector is also provided with a protrusion, which is located in the groove of the Luer male connector, and the outer edge of the groove of the Luer male connector is provided with a retaining edge for clamping the protrusion of the intermediate connector.

4. A rotary infusion connector as claimed in claim 3, characterized in that The Luer male connector body and the groove part are formed in one piece, and after the intermediate connector is installed in the Luer male connector groove, the retaining edge part is formed by a hot melt process.

5. A rotary infusion connector as claimed in claim 3, characterized in that A side of the fluid channel in the Luer male connector close to the middle piece is provided with an inclined surface so that the middle piece can be displaced toward one side of the Luer male connector.

6. A rotary infusion connector as claimed in any one of claims 1 to 5, characterized in that The Luer female connector can be replaced with a second Luer male connector, one end of which is inserted into the fluid channel of the intermediate connector and is interference-fitted or bonded to the intermediate connector, so that the second Luer male connector is sealed and connected to the intermediate connector, and the two are relatively fixed.

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