Abstract
A medical connector link for establishing a fluid connection between two fluid lines includes a first male link element/connector element and a second female link element/connector element. The male link element is arranged or arrangeable in the female link element such that a fluid passage of the male link element and a fluid passage of the female link element form a common fluid passage. The connector link further includes a seal element arranged within a circumferential groove on an outer side of the male link element or on an inner side of the female link element. The seal element seals a radial gap between the female link element and the male link element. The male link element and/or the female link element have at least one recess that fluidically connects the common fluid passage with the circumferential groove.
Claims
1. A medical connector link for establishing a fluid connection between two fluid lines, the medical connector link comprising: a first link element; a second link element; and a seal element, the medical connector link comprising a circumferential groove on an outer side of the first link element or on an inner side of the second link element, the first link element being arranged or arrangeable in the second link element such that a fluid passage of the first link element and a fluid passage of the second link element form a common fluid passage, the first link element and the second link element forming a radial gap between the first link element and the second link element, the seal element being arranged within the circumferential groove, the seal element sealing the radial gap between the second link element and the first link element, and the first link element and/or the second link element having at least one recess that fluidically connects the common fluid passage with the circumferential groove.
2. The connector link according to claim 1, wherein a first end portion of the first link element facing the second link element has a smaller outer diameter than a second end portion of the first link element opposite the first end portion.
3. The connector link according to claim 1, wherein the at least one recess extends in an axial direction of the first link element.
4. The connector link according to claim 1, wherein the at least one recess is arranged at a first end portion of the first link element facing the second link element between the circumferential groove and a front face of the first link element.
5. The connector link according to claim 1, wherein the fluid passage has a funnel-shaped opening at a stop surface of the second link element.
6. The connector link according to claim 1, wherein at least one of the recesses is arranged on a first end portion of the first link element facing the second link element, between the circumferential groove and a front face of the first link element, and at least one of the recesses is arranged at a stop surface of the second link element.
7. The connector link according to claim 1, wherein at least one of the recesses is arranged on an inner lateral surface portion of the second link element that surrounds a first end portion of the first link element facing the second link element, and at least one of the recesses is arranged on a stop surface of the second link element.
8. The connector link according to claim 1, wherein at least one of the recesses is arranged at an inner lateral surface portion of the second link element, which encloses a first end portion of the first link element facing the second link element, and at least one of the recesses is arranged at the end portion of the first link element.
9. The connector link according to claim 1, wherein the recesses are distributed over the circumference of the first link element and/or over the inner circumference of the second link element,
10. The connector link according to claim 9, wherein the recesses are distributed at equal distances from each other.
11. The connector link according to claim 1, wherein the first link element has a circumferential chamfer on its front face.
Description
BRIEF DESCRIPTION OF THE DRAWING FIGURES
[0029] The disclosure and the technical environment are explained in more detail below with reference to the Figures. It should be noted that the disclosure is not intended to be limited by the embodiments shown. In particular, unless explicitly shown otherwise, it is also possible to extract partial aspects of the facts explained in the figures and combine them with other components and findings from the present description and/or figures. In particular, it should be noted that the figures and especially the proportions shown are only schematic. Identical features are referenced with the same reference signs. Furthermore, it is pointed out that the features of the individual embodiments can be interchanged with each other and can occur in a certain combination.
[0030] The disclosure is explained in more detail below with reference to preferred embodiments with the aid of figures. The following is shown:
[0031] FIGS. 1A-1C show a schematic isometric side view of a first end portion of a first link element facing a second link element, and schematic longitudinal sectional views of the second link element and the connector link according to a first advantageous embodiment;
[0032] FIGS. 2A and 2B show a schematic isometric side view of the first end portion and a schematic longitudinal sectional view of the connector link according to a second advantageous embodiment;
[0033] FIGS. 3A-3C show a schematic isometric side view of the first end portion and schematic longitudinal sectional views of the second link element and the connector link according to a third advantageous embodiment;
[0034] FIGS. 4A-4C show schematic longitudinal sectional views of the end portion, the second link element and the connector link according to a fourth advantageous embodiment; and
[0035] FIGS. 5A-5C show schematic longitudinal sectional views of the end portion, the second link element and the connector link according to a final, fifth embodiment.
DETAILED DESCRIPTION
[0036] FIG. 1A shows a schematic isometric side view of a first end portion of the first and male link element 1, FIG. 1B shows a schematic longitudinal sectional view of a second and female link element 3, and FIG. 1C shows a schematic longitudinal sectional view of a connector link 5 according to a first embodiment formed from the respective components shown in FIGS. 1A and 1B. The first link element 1 has a fluid passage 6 extending along its axis and, at an end piece of the first link element 1, a radial seal element/sealing ring 8 arranged in a circumferential groove 9 on the first link element 1. A front face 11 of the first link element 1, which forms an end surface perpendicular to the axis of the first link element 1 and into which the fluid passage 6 terminates, furthermore has a plurality of recesses 13 distributed along the circumference of the first link element 1. Furthermore, the recesses 13 are evenly spaced from each other, i.e. have equal distances along the circumference of the first link element. However, embodiments of the invention in which the recesses are unevenly spaced, i.e. have different distances along the circumference of the first link element 1, are also quite possible. In the embodiment shown, the recesses 13 are formed in such a way that they open into/end in the circumferential groove 9, in which the seal element 8 is arranged, and at the same time penetrate the wall of the fluid passage 6 in the region of the front side 11. The second link element 3 illustrated in FIGS. 1B and 1C has a hollow-cylindrical portion for receiving the first link element 1, which is bounded by a stop surface 15. Furthermore, a funnel-shaped opening 16 is formed at the stop surface 15, which opens into a fluid passage 7 of the second link element 3. A (fluid) chamber 19 is formed between the front face 11 and the stop surface 15. In particular, FIG. 1C shows the plurality of recesses 13 on the first link element 1, through which the circumferential groove 9 or one side of the seal element 8 is in fluid communication with the fluid chamber 19 and thus the fluid passage 7. Furthermore, the first link element 1 has a circumferential chamfer which forms a transition between the front side 11 and the circumferential side of the first link element 1.
[0037] FIG. 2A shows the first link element 1 in a further advantageous embodiment and FIG. 2B shows a second embodiment of the connector link 5 with the first link element 1 from FIG. 2A and the second link element 3 from FIG. 1B. In this second embodiment, the recesses 13 are arranged on the first link element 1 in such a way that they do not penetrate the outer wall of the first link element 1, but rest on the inside of the first link element 1 and only penetrate the inner wall of the fluid passage 6 in the region of the front side 11. The recesses 13 extend axially through the first link element 1 to the circumferential groove 9, in which the seal element 8 is arranged. The circumferential groove 9 including the seal element 8 is thus fluidically connected to the fluid passage 7 of the second link element 3.
[0038] FIG. 3A shows a schematic isometric side view of the first end portion of the first link element 1 in a further embodiment, and FIGS. 3B and 3C show a schematic longitudinal sectional view of the second link element 3 and the connector link 5 according to a third advantageous embodiment. The first link element 1 of this embodiment differs from the embodiments described above in that the plurality of recesses 13 do not penetrate the wall of the fluid passage 6 or do not protrude into the fluid passage 6 of the first link element 1. The recesses 13 are arranged in the form of external apertures. This allows fluid to flow from the front side 11 in the direction of the seal element 8 or from the circumferential groove 9. The second link element 3 of this third embodiment also has a plurality of further recesses 131 on its stop surface 15, which start from the fluid passage 7 and extend in the direction of the inner wall of the second link element 3. The connector link 5 according to the third embodiment in FIG. 3C shows that the recesses 11 on the first link element 1 and the recesses 131 on the inner side of the second link element 3 are formed in such a way that the seal element 8 or the circumferential groove 9 on the first link element 1 and the fluid passage 7 are in fluidic communication with each other. Fluid therefore flows via the recesses 11 and 131 to the seal element 8 and away from it.
[0039] FIGS. 4A and 4B show a schematic longitudinal sectional view of the first end portion and the second link element 3 of a further embodiment. FIG. 4C shows a schematic longitudinal sectional view of the connector link 5 according to a fourth advantageous embodiment, which is composed of the components shown in FIGS. 4A and 4B. The radial seal element 8 is arranged on the inner side of the second link element 3 in the form of a rod seal. In this embodiment, only the second link element 3 has recesses 131 and 132. As in the embodiment of FIGS. 3B and 3C, the recesses 131 are arranged on the stop surface 15, and the recesses 132 are arranged on the inner lateral surface of the second link element 3, which surrounds the first link element 1 in the operating state. The recesses 131, 132 are formed in such a way that they are adjacent to each other and overlap/run into each other. This creates the fluidic connection between the seal element 8 and the fluid passage 7.
[0040] FIGS. 5A and 5B show schematic longitudinal sectional views of the first end portion of the first link element 1 and the second link element 3 of a further embodiment. FIG. 5C shows a schematic longitudinal sectional view of the connector link 5 according to a last, fifth embodiment, which is composed of the components shown in FIGS. 5A and 5B. The seal element 8 is arranged on the inner side of the second link element 3, in the form of a rod seal, as in the embodiment shown in FIG. 4B, and the first link element 1 has recesses 13 according to the embodiment shown in FIG. 1A. On the side of the second link element 3, only recesses 132 are arranged on the inner lateral surface of the cylinder housing 3. The formation of the recesses 13 on the first link element 1 enables a fluidic connection between the fluid passage 7 and the seal element 8, since the recesses 13 of the first link element 1 are adjacent to the recesses 132 of the second link element 3. In addition, the fluid passage 7 of the cylinder housing 3 has a funnel-shaped opening 16.
