Medical and / or medical fluid connector

By using soft parts as seals in medical and pharmaceutical fluid connectors to replace traditional sealed O-rings, the problems of insufficient production costs and operation safety in the prior art are solved, and the cost reduction and safety improvement of the fluid connectors are achieved, which is suitable for large-scale production.

CN120187487APending Publication Date: 2025-06-20RAUMEDIC AG
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Patent Information

Application Number
CN202380075521.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-10-26
Filing Date
2023-10-26
Publication Date
2025-06-20

AI Technical Summary

Technical Problem

Existing medical and pharmaceutical fluid connectors have shortcomings in terms of production cost and operational safety, especially in large-scale production, which is difficult to effectively reduce costs and ensure safety.

Method used

Using soft parts as seals instead of the traditional seal O-ring, the seals are molded onto hard parts through two-part injection molding technology, thereby reducing the number of parts, simplifying the manufacturing process, and improving the firmness and operational safety of the seals.

Benefits of technology

The production cost reduction of fluid connectors is achieved, the manufacturing and logistics process is simplified, while the firmness and operational safety of seals are improved, especially suitable for large-scale production.

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Abstract

A medical and / or pharmaceutical fluid connector (1) for connecting at least two fluid lines (2, 3, 4, 5). The fluid connector (1) has a main body (6) which is made of plastic by means of two-part injection moulding, at least one plug-in main body part (10) being used for plug-in connection with at least one of the fluid lines (4, 5). The plug-in body part (10) has at least one outer circumferential seal (11, 12) for sealing the plug-in body part (10) against an inner wall of the fluid line (4, 5) to be connected. The plug-in body part (10) is designed as a hard part of the two-part injection molded body (6) and the seal (11, 12) is designed as a soft part. The plug-in body part (10) has at least two circumferential seals (11, 12) for sealing the plug-in body part (10) against coaxially extending inner walls of the fluid lines (4, 5) to be connected and sealing the plug-in body part (10) radially between the circumferential seals (11, 12), the fluid connector (1; at least one connecting fluid channel (20, 20a) of the connecting fluid channels (20, 20a, 25) opens out of the plug-in body part (10). This makes the medical and / or pharmaceutical fluid connector safe in operation while being cost-effective in production and particularly suitable for large-scale production.
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Description

Technical Field

[0001] The present invention relates to a medical and / or pharmaceutical fluid connector for connecting at least two fluid lines. Background Art

[0002] Corresponding fluid connectors are known in the market.

[0003] Applications of such fluid connectors include hospital departments, laboratory departments, and departments for drug filling. Summary of the Invention

[0004] The object of the present invention is to further develop a fluid connector of the above type such that the fluid connector is operationally safe and particularly suitable for mass production while being cost-effective in production.

[0005] According to the present invention, this object is achieved by a medical and / or pharmaceutical fluid connector having the features specified in claim 1.

[0006] According to the present invention, it has been found that instead of a separate sealing O-ring, for example, a soft component can be used as a sealing component, which is molded onto a hard component of a two-component injection-molded body during a two-component injection molding process.

[0007] This particularly results in a reduction in the number of parts of the connector, which on the one hand simplifies manufacturing, particularly its logistics, and also makes the seal firm. The seal designed as a soft component is also particularly operationally safe because the only contact surfaces to be sealed are the abutments of the soft component on the walls of the medical fluid lines to be sealed and connected. Due to the two-component production, a sealed state between the seal and the body part of the body is achieved anyway. The plug-in body part on the one hand and the seal on the other hand can also be parts of a multi-component injection-molded body. The body or even the entire fluid connector can thus be manufactured as an injection-molded element having more than two components.

[0008] In the context of the present specification, the term "fluid" can include both liquids and gases. The term can also include liquid-gas mixtures. For example, the fluid can include or be air. For example, air can flow into or through the medical fluid connector according to the present invention.

[0009] The fluid connector can be used, for example, in eye operations, particularly for refractive cataract correction. The fluid connector can also be used, for example, in connection with the supply related to other types of surgeries.

[0010] TPE as a soft component plastic material according to claim 2 has proven to be effective in practice. Alternatively, silicone or polyurethane (PUR) can also be used as the plastic material for the soft component.

[0011] The ABS as a plastic material for the hard part according to claim 3 has proven to be effective in practice. Alternatively, polypropylene (PP), polyethylene (PE), polycarbonate (PC), polybutylene terephthalate (PBT) or polyetheretherketone (PEEK) can also be used for the hard part.

[0012] The fluid connector can include exactly one seal. At least two circumferential seals provided in a further embodiment according to the invention enable the body of the fluid connector to be sealed, in particular against the coaxially extending inner wall of the fluid line to be connected. This allows, for example, two inlets and two outlets of a medical fluid line to be connected to each other. The axially lower end of the fluid connector, on which the circumferential seal is arranged, can be inserted, for example, into a socket of a medical and / or pharmaceutical device. The axially lower end of the fluid connector can be plug-in shaped. It can be designed as a plug, in particular a coaxial plug. One of the seals can be arranged on the lower collar region of the axially lower end of the fluid connector, and the other of the seals can be arranged on the upper collar region of the axially lower end of the fluid connector, wherein the upper collar region has a diameter greater than the diameter of the lower collar region.

[0013] In one design according to the invention, at least one connecting fluid channel of the fluid connector opens radially between the circumferential seals from the plug-in body part. The plug-in body part of the two-component injection-molded body can thus have a compact design.

[0014] The fluid connector according to the invention can ensure a short-circuit-free connection to a fluid line, in particular a coaxial fluid line, since one of the circumferential seals is used to seal the inner line of the fluid line against the outer line of the fluid line surrounding the inner line, and the other seal of the circumferential seals is used to seal the outer line of the fluid line to the outside.

[0015] Specifically, at least one connecting fluid channel can open from the upper collar region and axially and radially above the lower collar region. The upper collar region and the lower collar region can be substantially cylindrical.

[0016] The web between the two circumferential seals according to claim 7 contributes to the injection-molded design of the two circumferential seals made of the plastic material of the soft part.

[0017] The overflow portion according to claim 10 contributes to the injection molding of the seal from the soft part and ensures that sufficient molding material can be used for the circumferential seal of the soft part. Unwanted trapped air can escape in a defined manner during the injection molding process.

[0018] At least two seals can be arranged concentrically with each other on the fluid connector, particularly in a cross-sectional plane through the fluid connector. The at least two seals can have different circumferences. Specifically, the at least two seals have an annular shape, wherein the radius of the seal increases or decreases along the longitudinal axis of the fluid connector or the connection axis of the fluid connector and the fluid line. Specifically, the radius of the seal can decrease or become smaller in the insertion direction of the plug-in body part of the fluid connector.

[0019] The two-component injection-molded body according to claim 15 allows a fluid line to be plugged onto the mating plug-in part. This allows for a simple connection of the fluid connector to these fluid lines. The fluid connector can have exactly two such mating plug-in parts.

[0020] The design of the outer wall of the mating plug-in part according to claim 16 facilitates removal from the mold during the injection molding process without undercuts.

[0021] The angle between the mating plug-in parts according to claim 17 makes it easier to plug the fluid line onto these mating plug-in insertion parts, because the ends of the mating plug-in parts are further spaced apart and thus easier to access individually. If the two fluid lines to be plugged have different functions, an intuitive personalization of the two mating plug-in parts can also be achieved in this way, thus avoiding an undesired confusion of the mating plug-in parts. The angle can also enable the fluid lines in the mating plug-in parts and the fluid connector to meet the overall installation space requirements. The angle at which the two mating plug-in parts extend relative to each other can be greater than 15°. The angle is regularly less than 60°, less than 45° and can be less than 30°. The angle can be about 20°.

[0022] As an alternative to at least one mating plug-in part, the two-component injection-molded body according to claim 18 has at least one mating socket part into which a fluid line can be inserted. Depending on the application, this socket variant can offer advantages. The inner wall of the at least one mating socket part can also be designed without undercuts, which provides corresponding advantages, as explained above in connection with claim 7. If multiple mating socket parts are used, for example two mating socket parts, these can extend at an angle to each other, which corresponds to one as already explained above with reference to claim 8.

[0023] In particular, the fluid connector can be a medical fluid connector. Description of the Drawings

[0024] Exemplary embodiments of the present invention are explained in more detail below with reference to the drawings. Among them:

[0025] Figure 1 A perspective view of an embodiment of a medical fluid connector for connecting at least two fluid lines, in the case of the illustrated embodiment for connecting a total of four medical fluid lines;

[0026] Figure 2 Again, a perspective view shows the medical fluid connector according to Figure 1 looking from the opposite direction; Figure 1 of the medical fluid connector;

[0027] Figure 3 A longitudinal cross-sectional view through the medical fluid connector is shown according to Figure 2 to illustrate the extension of two connecting fluid channels between the four medical fluid lines to be connected;

[0028] Figure 4 Another embodiment of a medical fluid connector for connecting at least two medical fluid lines is shown in the case of the illustrated embodiment for connecting a total of four medical fluid lines; and

[0029] Figure 5 Similar to Figure 3 a diagram shows a longitudinal cross-sectional view through the embodiment according to Figure 4 of the embodiment. DETAILED DESCRIPTION

[0030] The medical fluid connector 1 (see Figure 1 ) is for connecting at least two medical fluid lines and, in the illustrated embodiment, for connecting four medical fluid lines. These four medical fluid lines to be connected to the fluid connector 1 are indicated in Figure 1 as fluid lines 2, 3, 4, 5, where fluid lines 2, 3 are medical hose lines and fluid lines 4, 5 are medical coaxial lines having an inner lumen (fluid line 4) and an annular lumen (fluid line 5).

[0031] The fluid connector 1 has a two-component injection-molded body 6, which has a mating plug-in body part 7 for plug-in connection to the fluid lines 2, 3 via mating plug-in parts 8, 9. The two-component injection-molded body 6 further includes an insert body part 10 for plug-in connection to two other fluid lines 4, 5, i.e., for plug-in connection to medical coaxial lines. The insert body part 10 has two outer circumferential seals 11, 12. Seal 11 is for sealing the insert body part 10 against the inner wall of the fluid line 4 to be connected. Seal 12 is for sealing the insert body part against the inner wall of the fluid line 5 to be connected (i.e., against the outer inner wall of the annular lumen of the medical coaxial lines 4, 5).

[0032] The insertable body part 10 is designed as a hard plastic component, and the seals 11, 12 are designed as soft plastic components of the two-component injection-molded body 6 of the medical fluid connector 1.

[0033] Thermoplastic elastomer (TPE) is used as the plastic material for the soft components. Other examples of soft components are silicone or polyurethane (PUR).

[0034] Thermoplastic polymers are also used as the plastic materials for the hard components. An example of a material for hard components is a thermoplastic terpolymer, especially acrylonitrile-butadiene-styrene copolymer (ABS). Other examples of hard components are polypropylene (PP), polyethylene (PE), polycarbonate (PC), polybutylene terephthalate (PBT), or polyetheretherketone (PEEK).

[0035] Depending on the design of the medical fluid connector 1, instead of two seals 11, 12, it may also have exactly one seal, which is then designed as a soft component, for example if it is used to connect two medical fluid lines, i.e., one fluid line on the side of the mating plug insertable body part 7 and one fluid line on the side of the insertable body part 10.

[0036] Each of the two seals 11, 12 has an overflow part 13 (see Figure 1 ), and during the injection molding process of the two-component injection-molded body 6, excess soft component injection molding material may accumulate in the overflow part.

[0037] The two circumferential seals 11, 12 are formed and arranged concentrically with respect to each other. As Figure 1 shown, the seals 11, 12 are arranged one above the other along the longitudinal axis of the fluid connector. The radius of the upper seal 12 is greater than the radius of the lower seal 11. The seal 11 is located in the longitudinal direction of the fluid connector on the lower collar region 102 of the plug connector body part 10, which is designed to be arranged in the inner fluid line 4 when connected to the coaxial fluid lines 4, 5, specifically to be pushed into the inner fluid line 4. The seal 12 is located in the longitudinal direction of the fluid connector on the upper collar region 104 of the plug connector body part 10, and the upper collar region 104 is arranged above the lower collar region 102 in the longitudinal direction of the fluid connector and is designed to be arranged in the outer fluid line 5 when connected to the coaxial fluid lines 4, 5, specifically to be pushed into the outer fluid line 5 (see Figure 3 ). The lower collar region 102 and the upper collar region 104 respectively form the lower end of the fluid connector and the plug connector body part 10.

[0038] For this purpose, the inlet or outlet of the fluid line 4 is offset with respect to the inlet or outlet of the fluid line 5.

[0039] Two circumferential seals 11, 12 are connected to each other via a web 14 made of a soft part (see Figure 2 ). The seal 12 is connected via another web 15 to the soft part injection port 16 of the two-component injection molded body 6.

[0040] At the same axial height as the soft part injection port 16, the hard part injection port 17 of the two-component injection molded body 6 is arranged to be offset in the circumferential direction.

[0041] At the height of the two injection ports 16, 17, the two-component injection molded body 6 has a circumferential flange 18 made of a hard part. The flange 18 can be used as a stop for the medical coaxial pipelines 4, 5. The flange 18 is formed as a part or component protruding from the two-component injection molded body. In a longitudinal section through the fluid connector (see, for example, Figure 3 ), the flange 18 includes two protrusions protruding or extending from the two-component injection molded body 6.

[0042] Each of the two mating plug-in parts 8, 9 has an outer wall without undercuts. The mating plug-in parts 8, 9 can be fixed to the fluid pipelines 2, 3 to be plugged by means of solvent adhesion (i.e., in an adhesive manner).

[0043] The two mating plug-in parts 8, 9 extend at an angle of 20° relative to each other. This angle is denoted by α in Figure 3 . Depending on the design of the fluid connector 1, this angle between the longitudinal axes of the mating plug-in parts 8, 9 can also have different absolute values of at least 10° or greater than 10°. This angle is generally less than 60°.

[0044] Figure 3 The extension of the connecting fluid channels 19, 20 in the two-component injection molded body 6 is illustrated. In Figure 3 , the longitudinal axis of the fluid connector is specifically shown by the solid line Ax, and the insertion direction of the fluid connector or the insert body part 10 is correspondingly shown by the arrow ER.

[0045] The connecting fluid channel 19 connects the fluid pipelines 2, 4 to each other. In the insert body part 10, the connecting fluid channel 19 initially extends in a first channel part 19a coaxial with the longitudinal axis of the two-component injection molded body part 10. Axially, approximately at the height of the flange 18, the connecting fluid channel 19 then bends relative to the longitudinal axis along the channel part 19b and extends at an angle of 20°, and opens from the body 6 via the mating plug-in part 8. The inner diameter of the connecting fluid channel 19 is in the range between 1.5 mm and 4 mm, for example, in the range between 2 mm and 2.5 mm.

[0046] The connecting fluid passage 20 connects two fluid pipelines 3, 5. The connecting fluid passage 20 extends parallel to the longitudinal axis of the main body 6. The connecting fluid passage 20 opens radially via an opening portion 20a between two circumferential seals 11, 12 from the insert main body portion 10. In the region of the opening portion 20a, the inner diameter of the connecting fluid passage 20 can be reduced compared to other inner diameters which are as large as the inner diameter of the connecting fluid passage 19.

[0047] As Figure 3 shown, the lower collar region 102 which respectively forms the lower axial end of the main body 6 or the insert main body portion 10 has a circumferential recess or notch, and the seal 11 is arranged and fixed in the circumferential recess or notch. The upper collar region 104 axially arranged above the lower collar region 102 also has a circumferential recess or notch, and the seal 12 is arranged and fixed in the circumferential recess or notch. In an axial view, the upper collar region 104 is located between the lower collar region 102 and the flange or stop 18. In the longitudinal direction of the fluid connector, the insert main body portion 10 includes a circumferential undercut or recess / notch or groove 108 between the lower collar region 102 and the upper collar region 104. The circumferential groove 108 is shaped such that a step 106 is formed in the lower collar region 102, and the lower collar region 102 is offset from the upper collar region 104 by the step 106. The opening portion 20a is axially and radially arranged above the step 106.

[0048] In other words, if the fluid connector and the coaxial fluid pipelines are in a connected state, the external pipeline 5 of the connecting fluid passage 20 and the fluid pipeline and the internal pipeline 4 of the connecting fluid passage 19 and the fluid pipeline are connected to each other in a fluid - impermeable manner.

[0049] Figure 3 The fluid connector shown in also includes at least one undercut 21. The undercut 21 can extend around the main body 6. The undercut 21 can be formed as a depression or recess in the main body 6. At least one undercut 21 is arranged between the flange 18 and the seal closest to the flange 18 (i.e., the seal 12). At least one undercut 21 is formed and / or arranged on the main body 6 such that a latch element that can be arranged on the coaxial fluid pipelines 4, 5 can latch or engage the undercut 21 and thus fix the connection between the coaxial fluid pipelines and the fluid connector. The latch element can be, for example, a spring element.

[0050] Figure 4 and Figure 5 shows another embodiment of a medical fluid connector 25, which can be used to replace the medical fluid connector 1 according to Figures 1 to 3 The components and functions described above in connection with the embodiments according to Figures 1 to 3 have the same reference numerals and will not be discussed in detail again.

[0051] Instead of a mating plug-in body part with mating plug-in parts, the fluid connector 25 has a mating socket plug-in body part 26, which has mating socket parts 27, 28. The mating socket part 27 serves as a socket for a plug-in connection with the fluid line 2, i.e., it has a function corresponding to that of the mating plug-in part 8. The mating socket part 28 serves as a socket for a plug-in connection with the fluid line 3, i.e., it has a function corresponding to that of the mating plug-in part 9. In the fluid connector 25, the fluid lines 2, 3 are thus not plugged onto the corresponding plug-in parts, but are inserted into the corresponding socket parts (i.e., the mating socket parts 27, 28).

[0052] The inner walls of the mating socket parts 27, 28 are designed without undercuts and are used for solvent adhesion to fix the fluid lines 2, 3 according to the above explanation regarding the mating plug-in parts 8, 9.

[0053] The angle between the two mating socket parts 27, 28 corresponds to the angle discussed above in connection with the mating plug-in parts 8, 9. In the illustrated exemplary embodiment, the angle between the mating socket parts 27, 28 is still 20°.

[0054] In the region of the mating socket parts 27, 28, the inner diameters of the connecting fluid channels 19, 20 for receiving the fluid lines 2, 3 are increased compared to the remaining inner diameter. This remaining inner diameter can in turn be in the range from 1 mm to 5 mm, as already explained above in connection with the connecting fluid channels 19, 20 of the fluid connector 1.

[0055] The seals 11, 12 ensure a process-reliable seal between the plug-in body part 10 and the corresponding inner walls of the coaxial lines 4, 5 designed as coaxial sockets. The circumferential undercut 21 interacts here with the latching elements of the coaxial lines 4, 5 to axially fix the coaxial lines 4, 5 to the plug-in body part 10.

[0056] The two-component injection-molded body 6 further includes two actuating flaps 22, 23, which can be used to grasp the body when the body 6 is inserted into the pull-out parts of the coaxial lines 4, 5. The actuating flaps 22, 23 can be designed, for example, as ridges extending substantially in the longitudinal direction of the body 6. The actuating flaps 22, 23 (especially the ridges) can be arranged in the circumferential direction of the body 6. The ridges can have an outer geometry that is bent or curved inwardly relative to the body 6. The actuating flaps 22, 23 can extend between the flange 18 and the mating plug-in parts 7, 8 or the mating socket parts 27, 28.

[0057] This specification further relates to the following aspects:

[0058] 1. A medical fluid connector (1; 25) for connecting at least two medical fluid lines (2, 3, 4, 5),

[0059] - comprising a two-component injection-molded body (6) made of plastic, the two-component injection-molded body (6) having at least one plug-in body part (10) for plugging into and connecting to at least one of the fluid lines (4, 5), wherein the plug-in body part (10) has at least one outer circumferential seal (11, 12) for sealing the plug-in body part (10) against the inner wall of the fluid line (4, 5) to be connected.

[0060] - wherein the plug-in body part (10) is designed as a hard part of the two-component injection-molded body (6), and the seals (11, 12) are designed as soft parts.

[0061] 2. The medical fluid connector according to aspect 1, characterized in that TPE is used as the plastic material for the soft part.

[0062] 3. The medical fluid connector according to aspect 1 or 2, characterized in that ABS is used as the plastic material for the hard part.

[0063] 4. The medical fluid connector according to one of aspects 1 to 3, characterized in that the plug-in body part (10) has at least two circumferential seals (11, 12) for sealing the plug-in body part (10) against the coaxially extending inner walls of the fluid lines (4, 5) to be connected.

[0064] 5. The medical fluid connector according to aspect 4, characterized in that at least one connecting fluid channel (20, 20a) of the fluid connector (1; 25) opens out from the plug-in body part (10) radially between the circumferential seals (11, 12).

[0065] 6. The medical fluid connector according to aspect 4 or 5, characterized in that the two circumferential seals (11, 12) are connected to each other via a web (14) made of a soft part.

[0066] 7. The medical fluid connector according to one of aspects 1 to 6, characterized in that at least one outer circumferential seal (11, 12) has an overflow part (13) in which excess injection-molded material can accumulate.

[0067] 8. The medical fluid connector according to one of aspects 1 to 7, characterized in that the two-component injection-molded body (6) includes a mating plug-in body part (7), the plug-in body part (7) having at least one mating plug-in part (8, 9) for plug-in connection with at least one additional fluid line (2, 3) among the fluid lines (2 to 5).

[0068] 9. The medical fluid connector according to aspect 8, characterized in that at least one mating plug-in part (8, 9) comprises an outer wall without undercuts.

[0069] 10. The medical fluid connector according to aspect 8 or 9, characterized in that two mating plug-in parts (8, 9) for insertion into one of the other fluid lines, wherein the two mating plug-in parts (8, 9) extend at an angle (α) greater than 10° relative to each other.

[0070] 11. The medical fluid connector according to one of aspects 1 to 7, characterized in that the two-component injection-molded body (6) comprises a mating socket plug-in body part (26), the mating socket plug-in body part (26) having at least one mating socket part (27, 28) for plug-in connection with at least one additional fluid line (2, 3) among the fluid lines (2 to 5).

Claims

1. A medical and / or pharmaceutical fluid connector (1; 25) for connecting at least two medical fluid lines (2, 3, 4, 5), - comprising a two-component injection-molded body (6) made of plastic, the two-component injection-molded body (6) having at least one plug-in body part (10) for plugging and connecting to at least one of the fluid lines (4, 5), wherein, The insertable body part (10) has at least one circumferential seal (11, 12) for sealing the insertable body part (10) against the inner wall of the fluid line (4, 5) to be connected. - wherein the insertable body part (10) is designed as a hard part of the two-component injection-molded body (6), and the seals (11, 12) are designed as soft parts. - wherein the insertable body part (10) has at least two circumferential seals (11, 12) for sealing the insertable body part (10) against the coaxially extending inner walls of the fluid lines (4, 5) to be connected, and at least one connecting fluid channel (20, 20a) of the fluid connector (1; 25) opens out from the insertable body part (10) radially between the circumferential seals (11, 12).

2. The fluid connector according to claim 1, wherein, TPE is used as the plastic material for the soft part.

3. The fluid connector according to claim 1 or 2, wherein, ABS or PP is used as the plastic material for the hard part.

4. The fluid connector according to any one of claims 1 to 3, wherein, The two circumferential seals (11, 12) are connected to each other via a web (14) made of the soft part.

5. The fluid connector according to any one of claims 1 to 4, wherein, The circumferential seals (11, 12) are arranged at the axially lower end of the fluid connector.

6. The fluid connector according to claim 5, wherein, One of the seals is arranged on the lower collar region (102) of the axially lower end of the fluid connector, and the other seal is arranged on the upper collar region (104) of the axially lower end of the fluid connector, and the upper collar region (104) has a larger diameter than the lower collar region (102).

7. The fluid connector according to claim 5 or 6, wherein, The axially lower end of the fluid connector is designed as a plug-in part, in particular as a coaxial plug-in part.

8. The fluid connector according to claim 6 or 7, wherein, The at least one connecting fluid channel (20, 20a) opens out from the upper collar region (104) and opens axially and radially above the lower collar region (102).

9. The fluid connector according to any one of claims 6 to 8, wherein, The lower collar region and the upper collar region (102, 104) are substantially cylindrical.

10. The fluid connector according to any one of claims 1 to 9, wherein, The at least two circumferential seals (11, 12) have overflow parts (13) in which excess injection-molded material can accumulate.

11. The fluid connector according to any one of claims 1 to 10, wherein, The at least two seals (11, 12) are arranged concentrically on the fluid connector, in particular in a cross-sectional plane passing through the fluid connector.

12. The fluid connector according to any one of claims 1 to 11, wherein, The at least two seals (11, 12) have different circumferences.

13. The fluid connector according to any one of claims 1 to 12, wherein, The at least two seals (11, 12) are annular, wherein the radius of the seals (11, 12) increases or decreases along the longitudinal axis of the fluid connector or the connection axis of the fluid connector and the fluid line.

14. The fluid connector according to claim 13, wherein, The radius of the seals (11, 12) decreases or becomes smaller in the insertion direction (ER) of the insertable body part (10) of the fluid connector.

15. The fluid connector according to any one of claims 1 to 14, wherein, The two-component injection-molded body (6) comprises a mating plug-in body part (7) having at least one mating plug part (8, 9) for plug-in connection to at least another fluid line (2, 3) of the fluid lines (2 to 5).

16. The fluid connector according to claim 15, wherein, The at least one mating plug part (8, 9) comprises an outer wall without undercuts.

17. The fluid connector according to claim 15 or 16, wherein, The fluid connector further comprises two mating plug parts (8, 9) for plug-in connection to one of the other fluid lines, wherein the two mating plug parts (8, 9) extend at an angle (α) greater than 10° relative to each other.

18. The fluid connector according to any one of claims 1 to 14, wherein, The two-component injection-molded body (6) comprises a mating socket plug-in body part (26) having at least one mating socket part (27, 28) for plug-in connection to at least another fluid line (2, 3) of the fluid lines (2 to 5).

19. The fluid connector according to any one of claims 1 to 18, wherein, The fluid connector is a medical fluid connector.