DISPOSABLE AND SYSTEM WITH A PORT

Abstract

The present disclosure relates to a disposable, which includes a fluid line and a connector having a connector lumen, for fluidically connecting the fluid line to a first lumen of a first fluid guide of a port, which further includes a second lumen. It further relates to a system with a disposable according to the present disclosure and with a port for establishing a fluid communication between at least one fluid line of a medical treatment apparatus, which fluid line is assigned to an interior of the medical treatment apparatus, and a connector of a fluid line of a disposable, which fluid line is assigned to an exterior of the medical treatment apparatus.

Claims

1-19. (canceled)

20. A disposable comprising: a fluid line and a connector with a connector lumen for fluidically connecting the fluid line with a first lumen of a first fluid guide of a port of a medical treatment apparatus, wherein the port further comprises a second lumen for receiving a section of the connector, wherein the connector comprises a touch-protection cover with a free connection opening, wherein inside the touch-protection cover the connector lumen is surrounded by a wall ends in an opening, wherein the free connection opening and the opening of the wall have a minimum distance of at least 5 mm from each other.

21. The disposable according to claim 20, wherein the free connection opening and the opening of the wall have a minimum distance of at least or exactly 10 mm from each other.

22. The disposable according to claim 20, wherein the connector comprises a rib structure on an outside thereof, and wherein the rib structure is arranged to be introduced in sections into the second lumen of the port when the connector is connected to the medical treatment apparatus.

23. The disposable according to claim 22, wherein the rib structure extends up to the free connection opening or to the front end of the disposable or of the connector.

24. The disposable according to claim 22, wherein the rib structure comprises adjacent ribs which delimit recesses that are arranged between them, wherein the part or portion of the cross-section of the rib structure which the recesses make up or receive in a cross-section of the connector by or across the rib structure is between 5% and 15% of the cross-section of the connector.

25. The disposable according to claim 24, wherein the part or portion of the cross-section of the rib structure which the recesses make up or receive in a cross-section of the connector by or across the rib structure is between 10% and 12% of the cross-section of the connector.

26. The disposable according to claim 22, wherein the rib structure comprises adjacent ribs which delimit recesses that are arranged between them, wherein the part or portion of the cross-section of the rib structure which the recesses make up or receive in a cross-section of the connector by or across the rib structure is more than 12% of the cross-section of the connector

27. The disposable according to claim 22, wherein the rib structure comprises ribs having at least or precisely two lengths that differ from each other.

28. The disposable according to claim 22, wherein some ribs of the rib structure extend to the connection opening or to the front end of the disposable or of the connector, however, others do not.

29. The disposable according to claim 22, wherein the connector comprises a drip disc and a disc structure, wherein ribs of the rib structure are arranged between the drip disc and the disc structure.

30. The disposable according to claim 29, wherein the drip disc and the disc structure extend at an angle between 75° and 105° to a flow-through lumen of a connector and/or are parallel to each other.

31. The disposable according to claim 22, wherein the rib structure comprises at least 16 ribs distributed over the circumference of the touch-protection cover.

32. The disposable according to claim 31, wherein the rib structure comprises at least 18 ribs distributed over the circumference of the touch-protection cover.

33. The disposable according to claim 31, wherein the rib structure comprises at least or exactly 20 ribs distributed over the circumference of the touch-protection cover.

34. A system comprising: a disposable comprising a fluid line and a connector with a connector lumen for fluidically connecting the fluid line with a first lumen of a first fluid guide of a port of a medical treatment apparatus, wherein the port further comprises a second lumen for receiving a section of the connector, wherein the connector comprises a touch-protection cover with a free connection opening, wherein inside the touch-protection cover, the connector lumen is surrounded by a wall ends in an opening, wherein the free connection opening and the opening of the wall have a minimum distance of at least 5 mm from each other; and a port for establishing a fluid communication between at least one fluid line of the medical treatment apparatus, wherein the fluid line of the medical treatment apparatus is assigned to the interior of the medical treatment apparatus, and the connector of the fluid line of the disposable, wherein the fluid line of the disposable is assigned to an exterior of the medical treatment apparatus, wherein the port comprises at least: the first fluid guide with at least a first lumen and a first end-side opening, provided for receiving and/or guiding a medical fluid and/or for establishing the fluid communication with the connector; and a second fluid guide having at least a second lumen and a second end-side opening, wherein the first end-side opening of the first fluid guide is arranged, at least in sections, in the second lumen of the second fluid guide.

35. The system according to claim 34, wherein the second end-side opening of the second fluid guide of the port has a cross-sectional area smaller than a cross-sectional area of the second lumen arranged farther towards the interior of the medical treatment apparatus than the second end-side opening.

36. The system according to claim 34, wherein the first lumen of the port ends in a funnel-shaped or diverging shape in the first end-side opening.

37. The system according to claim 34, wherein an edge delimiting the first end-side opening is spaced from the inner wall of the second lumen at a distance which is at no point less than 5 mm.

38. The system according to claim 37, wherein the distance is at no point less than 6 mm.

39. The system according to claim 37, wherein the distance is at no point less than 7 mm.

40. The system according to claim 37, wherein the distance is at no point less than 8 mm.

41. The system according to claim 34, wherein the length of the touch-protection cover is determined such that the front side or surface of the touch-protection cover surrounding the connection opening is guided through the inner wall of the second end-side opening or the adjacent second lumen of the port during insertion of the connector into the second lumen of the port in such a way that the front side or surface cannot come into contact with the first fluid guide.

42. The system according to claim 41, wherein the length of the touch-protection cover is determined such that the front side or surface of the touch-protection cover surrounding the connection opening is guided through the inner wall of the second end-side opening or the adjacent second lumen of the port during insertion of the connector into the second lumen of the port in such a way that the front side or surface cannot come into contact with a front side limitation of the first end-side opening of the first fluid guide.

43. The system according to claim 34, wherein a cross-sectional area of the second lumen of the port increases starting from a cross-section, in which the opening plane of the first end-side opening of the first lumen also lies, continuously and/or steadily in the axial direction up to a beginning of an opening of the port which radially widens the second lumen in at least one cross-section.

44. The system according to claim 34, wherein a length of the touch-protection cover and/or the distance between the free connection opening and the opening of the connector lumen are set such that the front side or surface of the opening of the connector and/or the wall of the opening during the insertion of the connector into the second lumen of the port cannot come into contact with the first fluid guide, in particular not with its front-side delimitation of the first end-side opening.

45. The system according to claim 34, further comprising the medical treatment apparatus, wherein the medical treatment apparatus comprises a housing with a fastening section for connecting the medical treatment apparatus to the port.

46. The system according to claim 34, wherein the port or the fastening section comprises an edge, wherein the edge extends in a first section annularly with or below an inner radius, wherein a second section of the edge is not part of the annular shape having the inner radius and being formed by the first section.

47. The system according to claim 46, wherein the edge is a raised edge.

48. The system according to claim 46, wherein the medical treatment apparatus comprises a swivel lever, arranged for its pivoting about a swivel axis, wherein the swivel lever comprises: a stop to temporarily prevent an axial separation movement for separating the connector of the disposable from the fastening section by or after pivoting the swivel lever into a second pivot position of the swivel lever, wherein the stop is designed to limit rotation of the inserted connector about the longitudinal axis of its connector lumen.

49. The system according to claim 48, wherein the stop is designed to limit rotation of the inserted connector in interaction with a plate or disc of the end-side opening of the disposable.

50. The system according to claim 48, wherein the connector comprises a disc structure which comprises a round edge section with an outer radius which corresponds to a value between 90% and 99.9% of an inner radius of the first section of the edge.

51. The system according to claim 48, wherein the connector comprises a disc structure which comprises a round edge section with an outer radius which is at most 1 mm smaller than the inner radius of the first section.

52. The system according to claim 51, wherein the outer radius is at most 0.5 mm smaller than the inner radius of the first section.

53. The system according to claim 51, wherein the outer radius is 0.1 mm smaller than the inner radius of the first section.

54. The system according to claim 48, wherein the connector comprises a disc structure which comprises a round edge section with an outer radius, wherein the round edge section or the outer radius of the disc structure is distanced or spaced at most 1 mm away from the first section of the edge.

55. The system according to claim 54, wherein the round edge section or the outer radius of the disc structure is distanced or spaced at most 0.5 mm away from the first section of the edge.

56. The system according to claim 54, wherein the round edge section or the outer radius of the disc structure is distanced or spaced at most 0.1 mm away from the first section of the edge.

57. The system according to claim 54, wherein the outer edge section or the outer radius of the disc structure is spaced or distanced at least 3 mm from the second section of the edge.

58. The system according to claim 54, wherein the outer edge section or the outer radius of the disc structure is spaced or distanced 4 mm from the second section of the edge.

59. The system according to claim 54, wherein the outer edge section or the outer radius of the disc structure is spaced or distanced 4.6 mm or more from the second section of the edge.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0140] In the following, the present disclosure is described with reference to the accompanying figures. In the drawing, identical reference numerals denote similar or identical elements.

[0141] FIG. 1 schematically shows a port of a system for connecting a disposable to a medical treatment apparatus of the system in fluid communication.

[0142] FIG. 2 shows an enlarged detail of FIG. 1.

[0143] FIG. 3 shows the port of FIG. 1 in a perspective view from the right in a longitudinal cut.

[0144] FIG. 4 shows, partially, the front or side view of a medical treatment apparatus with a view to a housing section thereof.

[0145] FIG. 5 shows the connector of a disposable being shown only in sections.

[0146] FIG. 6 shows the connector of FIG. 5 in a partial sectional representation.

[0147] FIG. 7 shows the connection state between port and connector in a simplified longitudinal cut.

[0148] FIG. 8 shows two ports, each of which is received in a fastening section of a housing.

[0149] FIG. 9 shows, schematically simplified, a fluid line structure of a medical treatment apparatus.

DETAILED DESCRIPTION

[0150] FIG. 1 shows a port 100 in a first embodiment of a system.

[0151] The port 100 includes a first fluid guide 3 with at least a first lumen 31 and a first end-side opening 32. The first lumen 31 is flowable in its longitudinal direction, indicated by its center line M. Fluid present in the first lumen 31 can leave the first fluid guide 3 via the first end-side opening 32.

[0152] The port 100 further includes a second fluid guide 5 with at least a second lumen 51 and a second end-side opening 52. For the purpose of reference, the second end-side opening 52 in the embodiment of FIG. 1 is understood or referred to as a transition from an exterior A of the medical treatment apparatus 2000, only outlined in FIG. 1, to an interior I of the port 100 or of the medical treatment apparatus 2000.

[0153] The first fluid guide 3 lies in an interior of the second fluid guide 5 and, with reference to the port 100, its first end-side opening 32 lies further in the interior I of the port 100 or of the medical treatment apparatus 2000, only outlined in FIG. 1, (i.e., further inside) than that second end-side opening 52 of the second fluid guide 5.

[0154] The second end-side opening 52, which may be an opening plane, is provided in order to insert a section of a connector 4001 (see FIG. 5) of a disposable 4000 therethrough and into the interior of the port 100, with the aim of establishing a fluid connection between the first fluid guide 3 and a connector lumen 4004, see FIG. 6. The second end-side opening should hereby preferably guide the connector 4001 in a stable position.

[0155] During its intended use, the port 100 serves to establish a fluid connection between at least one fluid line 2002 of the medical treatment apparatus 2000, which fluid line 2002 is assigned to or faces or is dedicated to the interior I of a medical treatment apparatus 2000 on the one hand, and the connector 4001 of a fluid line 4002 of the fluid-guiding disposable 4000, which fluid line 4002 is assigned to the exterior A of the medical treatment apparatus 2000, on the other hand. The connection is preferably made in an end section 1 of port 100.

[0156] FIG. 1 shows a fastening section 2003 for fastening the port 100 to the medical treatment apparatus 2000, which is only outlined in FIG. 1. In FIG. 1, the port 100 leads through a housing section of a housing 2001 of the medical treatment apparatus 2000, which is delimited by adjacent housing sections 2005.

[0157] FIG. 1 shows the port 100 in a state of non-connection to a connector 4001. It is closed with a rinsing cap 200. FIG. 1 thus shows the port 100 in a “rinsing state” or “closed state” of port 100.

[0158] The rinsing cap 200, which is placed on the port 100, closes the second end-side opening 52 and thus the interior of the port 100 and the two fluid guides 3, 5 from the exterior of the port 100 and/or of the medical treatment apparatus. For this purpose, an outer edge 202 of the rinsing cap 200 is placed on or in the port 100 in a fluid-tight manner. In this, a front/end face 205 of the rinsing cap faces the interior I.

[0159] The rinsing cap 200 may have a first groove 204 on or around its circumference, which is explained in more detail below.

[0160] The housing 2001 optionally includes an edge 2007 that completely or at least partially surrounds the fastening section 2003 (see FIG. 4). The edge 2007 in turn includes a first section 2007a and a second section 2007b, which are discussed in more detail with reference to FIG. 4.

[0161] In an end area of the second lumen 51 opposite the second end-side opening 52, at least one opening 54 may be provided on or in its side wall, which opening 54 is present in front of the drawing plane and is therefore not shown in FIG. 1 because of the cut-off line, but is shown in FIG. 3. Its function is explained below with reference to the representation in FIG. 3.

[0162] A leak sensor 2031 is provided as an option in order give information at an early stage in case of a leak, for example from the fluid connection established between the fluid line 2002 of the medical treatment apparatus 2000 on the one hand and the fluid line 4002 on the other hand. Corresponding voltage sources, lines, evaluation devices and alarm devices may be provided and suitably programmed where required.

[0163] FIG. 1 further shows a receiving section 2015 as part of a swivel lever, which is designated with the reference numeral 2011 in FIG. 8. The receiving section 2015 of the swivel lever, not further shown in FIG. 1, which is indicated here by a screw, serves to releasably receive at least one section of the rinsing cap 200 thereon.

[0164] Furthermore, a handle section 2013 of the swivel lever is visible. It serves the user to pull the rinsing cap 200 out of port 100 by pulling the handle section and in axial direction (i.e., in FIG. 1 to the left) and thus to end the rinsing position.

[0165] It can be seen that the second lumen 51 of the second fluid guide 5 includes at least one longitudinal section the side walls of which (top and bottom in the sectional representation of FIG. 1) are, in a direction along the center line M or parallel thereto (left-right in FIG. 1), not parallel to each other and/or are not at a constant angle to each other. The cross-sectional area of the second lumen 51 increases to the right rather, i.e., from the second end-side opening 52, over a certain distance continuously or even steadily.

[0166] The second lumen 51 optionally includes a first cross-sectional area delimited by the side walls of the second lumen 51, which is smaller than any other cross-sectional area of the second lumen 51 delimited by the side walls of the second lumen 51, which faces further towards the interior I of the second lumen 51 than the first cross-sectional area, as can be seen at least from an area just before the first end-side opening 32 further to the right in FIG. 1. This causes the second lumen 51 to widen at least in sections towards the interior I.

[0167] FIG. 1 further shows that the first lumen 31 may optionally end in a funnel-shaped or diverging shape in the first end-side opening 32.

[0168] An opening of a sterile air inlet line 47, which can be connected to a compressed air source, e.g., the medical treatment apparatus 2000, may be provided. It is preferably located at an end of the second lumen 51 opposite the second end-side opening 52, preferably at an upper side wall of port 100.

[0169] After cleaning or disinfection and before opening the rinsing cap 200 to connect the disposable 4000, sterile air may be introduced via the sterile air inlet line 47 and the cleaning or rinsing solution present in the port 100 may thus be largely removed.

[0170] From a cross-section in which the opening plane of the first end-side opening 32 of the first lumen 31 also lies, the cross-sectional area of the second lumen 51 increases continuously and/or steadily in the axial direction up to the beginning of an opening of the port which radially widens the second lumen in at least one cross-section and/or in which the opening of the sterile air inlet line 47 lies.

[0171] As can be seen in FIG. 1, the edge delimiting the first end-side opening 32 is spaced from the inner wall of the second lumen 51. This distance is at no point less than 5 mm, 6 mm, 7 mm or 8 mm. It can be seen that the distance is caused by the widening of the second lumen 51 to the inside, i.e., to the right. If there were no widening of the second lumen 51, the distance between the edge and the inner wall of the second lumen 51 would correspond to the difference between the radius of the outer circumferential surface of the first fluid guide 3 and the radius of the inner circumferential surface of the second end-side opening 52, in which the side surfaces defining it are parallel and/or at a constant angle to each other. Due to the widening, however, the distance is greater. In the present example it is at least 1.1 times this difference. The step thus obtained or enlarged (compared to an embodiment without the widening shown in FIG. 1) serves to protect against a liquid bridge between liquid, which may have remained on the inner wall of the second lumen 51, and the first end-side opening 32 of the first fluid guide 3 and thus ultimately serves to protect the patient from germs transferred in this way.

[0172] FIG. 2 shows an enlarged view of a section from FIG. 1.

[0173] FIG. 2 shows that the second end-side opening 52 may lie in, or close, a longitudinal section (in the axial direction) in which the circumferential surfaces forming the second end-side opening 52 are parallel to each other. Sections located further inside the port 100 and adjacent to the second end-side opening 52 contribute to the above-mentioned widening of the second lumen 51.

[0174] The circumferentially closed, first groove 204, which may have a U-shaped, V-shaped or W-shaped profile in a longitudinal cut of the rinsing cap 200, as shown in FIG. 2, allows liquids that hit the rinsing cap 200 from outside, mostly accidentally, for example when cleaning the housing or when liquids are spilled by personnel or patients, to be drained away downwards. The flow path drawn in this way thus leads such a liquid specifically away from the end region of the rinsing cap 200, via which it could sooner or later reach the interior of the port 100.

[0175] Such a flow path is indicated by the arrows.

[0176] The circumferentially closed second groove 208 results from the special design of the front edge of the rinsing cap 200.

[0177] FIG. 3 shows, in a perspective view from the right, the port 100 of FIG. 1 in a longitudinal cut with a view into the cut-open port 100 and onto the front side or face 205 of the rinsing cap 200 and its edge 207.

[0178] A reference cross-section Q.sub.R is shown—purely for reference reasons.

[0179] While there may be cross sections of the second lumen 51 that include a circular cross-sectional area, as shown by the reference cross-section Q.sub.R, the view in FIG. 3 however also shows that the second lumen 51 may include at least one cross-section that does not include a circular cross-sectional area. This includes the cross-sections that are located to the right of the reference cross-section Q.sub.R in FIG. 3, i.e., facing an interior I.

[0180] If, for example, one looks at the cross-section in which the first end-side opening 32 is also located, it can be seen from this cross-section in the representation in FIG. 3 that the second lumen 51 optionally includes at least one cross-sectional area which has a smaller extension in its transverse direction Q than in its perpendicular height H, which in FIG. 3 extends in a top-down direction.

[0181] FIG. 3 further shows that in at least one cross-section of port 100, the cross-sectional area of the first lumen 31 is not concentrically arranged in the cross-sectional area of the second lumen 51, which is already due to the fact that the second lumen 51 is itself non-cylindrical in an area or cross-section in which it includes the first fluid guide 3 or the first lumen 31.

[0182] Furthermore, FIG. 3 shows that the side walls of this cross-section and/or of its circumference delimiting the second lumen 51 need not be evenly spaced from a center line M of the first lumen 31, as can be seen from the cross-section in which the first end-side opening 32 is also located, or from a cross-section located further inside, i.e., to the right.

[0183] The at least one optional opening 54 of the port 100 already mentioned with regard to FIG. 1 widens the second lumen 51 radially in at least one cross-section. In the example of FIG. 3, the groove 54 runs along a lower part of the circumference of the second lumen 51, in others along the entire circumference, preferably over a part of the circumference located in use below the first fluid guide, i.e., below the first fluid guide 3 in FIG. 3.

[0184] The opening 54 preferably runs in a plane which is perpendicular to the center line M of the first lumen 31, which may also be advantageous for manufacturing reasons.

[0185] As can be seen from FIG. 3, the opening 54 preferably lies at that end of the second lumen 51 which is opposite its second end-side opening 52.

[0186] The opening 54 may be connected, via a line not shown in FIG. 9, to a drain or discharge line 153 (FIG. 9) which may be in fluid communication with the second lumen 51 via a connection 48 shown in FIG. 8.

[0187] The edge 207 may be designed so that, as shown in FIG. 3, it does not project at less than 90° (or a range between 80° and) 100° from an axial center line of the rinsing cap 200 or axial center line M of port 100 in the inserted state of the rinsing cap 200 and/or in the relaxed state.

[0188] FIG. 4 shows a detail of the front or side view of a medical treatment apparatus 2000 with a view to a housing section thereof, which includes a fastening section 2003 for fastening a port, e.g., the port 100.

[0189] The fastening section 2003 is used to receive a port, which in turn is used for its connection to a disposable, in particular a disposable according to the present disclosure. The fastening section 2003 serves in particular to receive the port 100 according to the present disclosure, for example said port 100 of the previous figures, in or at the housing 2001 of the medical treatment apparatus 2000.

[0190] Such a port is actually also fastened in the fastening section 2003 shown in FIG. 4. However, the port cannot be seen in FIG. 4 because it lies behind the drawing plane and is, moreover, covered by a connector 4001, shown in cross-section, of a disposable, of which the other parts are not shown.

[0191] However, the centrally located connector lumen 4004 with a center point C, which is shown here as an example, and the cover plate of a touch-protection cover 4017, which is also shown in FIG. 5 and FIG. 6, can be seen. The height of connector 4001, at which it is cut for the representation of FIG. 4, is indicated in FIG. 5.

[0192] The optional edge 2007 already mentioned in FIG. 1, which delimits the fastening section 2003 from adjacent housing sections 2005 either circumferentially or only in sections and optionally projects beyond them in one direction out of the drawing plane, can be seen in FIG. 4.

[0193] The edge 2007 in FIG. 4 exemplarily includes the first section 2007a which includes the course of a part of a ring having a center point C which corresponds to the center of the connector lumen 4004 of the connector 4001 of which only portions are shown in section.

[0194] The second section 2007b of the edge 2007 is not part of the ring shape around the center point C, which is formed by the first section 2007a. The second section 2007b delimits a dent or indentation 2009 of the fastening section 2003, the base of which is not or to a large extent not parallel to the surface of adjacent housing sections 2005. The second section 2007b forms with the first section 2007a the only optionally circumferentially closed edge 2007. In the area of the dent or indentation 2009, the lower edge of the only optionally circumferentially closed edge 2007, i.e., the second section 2007b, lies further away from the center point C than the upper edge the only optionally circumferentially closed edge 2007, i.e., the first section 2007a.

[0195] It can be seen that the connector 4001 and, above all, its touch-protection cover 4017, see also FIG. 5, includes a plurality of ribs 4003a and 4003b on its outer wall, respectively. The radially outer dimensions of said plurality of ribs allow the connector 4001 to be pushed into the second lumen 51 with the desired fit.

[0196] The disc structure 4009 shown in FIG. 5 serves as an example of an optional flange to achieve a positive fit in a radial direction against the inner wall of the first section 2007a.

[0197] It may thus cover the area defined by the first section 2007a, but not the area defined by the second section 2007b.

[0198] Therewith, the disk structure 4009 may have an outer radius which is only slightly smaller than the inner radius of the first section 2007a.

[0199] One or more fillets 52a, which, starting from the inside of the second end-side opening 52, represent a reduction in the wall thickness of the second fluid guide 5, serve for an early inlet of air during the separating movement, by which the connector 4001 is separated from the port 100 by pulling on the connector 4001.

[0200] FIG. 5 shows the connector 4001 of a disposable 4000 according to the present disclosure, shown only in sections, which additionally includes a fluid line 4002 and may be or may include a blood tubing set, a substituate line, etc.

[0201] The connector 4001 serves to fluidically connect its connector lumen 4004, which can be seen in FIG. 6, with the first lumen 31 of the first fluid guide 3 of port 100 (“connection state”). For this purpose, the connector 4001 is inserted at least in sections into the second lumen 51 of port 100, as shown in FIGS. 4 and 7, wherein one end-side connection opening 4019 of connector 4001 is pushed, at least in sections thereof, over the first fluid guide 3.

[0202] The connector 4001 optionally includes a rib structure 4003 on an outer side which, in the connection state described above, is in radial contact with the inner wall of the second end-side opening 52 of the second fluid guide 5.

[0203] The rib structure 4003 includes adjacent ribs 4003a, 4003b, between which there are recesses 4007a, 4007b, which, due to the optional longitudinal course of the ribs 4003a, 4003b, are delimited laterally in the axial direction or transversely by the ribs 4003a, 4003b.

[0204] The recesses 4007a, 4007b make up, in a cross-section of connector 4001 (e.g., measured from the base of the ribs to the tip of the ribs, i.e., in radial direction), between 5% and 15%, e.g., between 10% and 12% of the cross-sectional area of connector 4001 in this cross-section. The cross-sectional area of the connector has in this cross-section, e.g., an extension or an inner radius which extends to the side or front side or face of the rib specifically considered, which radially ends or terminates the ribs 4003a, 4003b.

[0205] Furthermore, connector 4001 may have a disk structure 4009, which is essentially perpendicular to a longitudinal center axis of connector 4001 (in FIG. 5 in an up-down direction). The disc structure 4009 is preferably round or includes a round edge section with an outer radius. The outer radius corresponds to 90% to 99.9% of the inner radius of the first section 2007a of the edge 2007. Alternatively or in addition, the outer radius of the disc structure 4009 is at most 1 mm, e.g., at most 0.5 mm, or 0.1 mm smaller than the inner radius of the first section 2007a. Alternatively or in addition, the outer edge section or the outer radius of the disk structure 4009 includes a distance or space of at most 1 mm, e.g., at most 0.5 mm, or 0.1 mm, from the first section 2007a of the edge 2007.

[0206] The connector 4001 includes a connector 4015 with a flow-through lumen, by which the fluid line 4002 of the disposable 4000 is or can be connected to the connector 4001. Through this connection, or in this connection, the flow-through lumen of connector 4015 and the connector lumen 4004, or their center lines, are at an angle for example between 80° and 100° to each other.

[0207] The connector 4001 has a touch-protection cover 4017 ending with the free or end-side connection opening 4019. The connector lumen 4004, surrounded by a wall 4021, ends in an opening 4023 inside the touch-protection cover 4017. The free connection opening 4019 and the opening 4023 of the wall 4021 are preferably spaced from each other by a minimum distance of at least 10 mm, e.g., of at least 14 mm.

[0208] At its end opposite the free or end-side connection opening 4019, connector 4001 may have a closing plate or closing disc 4027. It can be arranged perpendicular to the center line of the connector lumen 4004. It may protrude radially at its circumference or along its entire circumference over any structures adjacent to it or over all structures adjacent to it. The closing plate or closing disc 4027 may be used to be partially received by a groove in the swivel lever 2011 when the swivel lever 2011 is pivoted accordingly. This can facilitate the removal of connector 4001 when pulling the handle section 2013 of the swivel lever 2011, see FIG. 8.

[0209] FIG. 6 shows the connector 4001 of FIG. 5 in a partial sectional view.

[0210] FIG. 7 shows the connection state between port 100 and connector 4001 in a simplified longitudinal cut in which the connector lumen 4004 is not shown.

[0211] It can be seen that when air is introduced into the second lumen 51 via the sterile air inlet line 47 in order to dry or empty the second lumen 51 (see the air flow paths marked by arrows), the air—finds its way out of the second lumen 51 by passing the ribs 4003a, 4003b or the rib structure 4003, respectively, which is not lying in the drawing plane due to the chosen cutting line and, therefore, is not shown, through the second lumen 51 of the second fluid guide 5, around the drip disc 4025 of the connector 4001 and essentially under the disc structure 4009, which at the bottom offers a lower flow resistance between its radial edge and the edge than at the top, since the gap it has at the top towards the first section 2007a of the edge 2007 is intentionally kept smaller than the gap it has at the bottom towards the second section 2007b. Liquid that hits the port from the outside, e.g., liquid spilled by personnel or patients, will therefore not reach the entrance area of port 100 disposed behind disc structure 4009, but rather flows downward further outside along the disc structure 4009. The same advantageous effect can be achieved by selecting a suitable geometry for the port and the rinsing cap.

[0212] FIG. 8 shows two ports 100 each of which is received in a fastening section of a housing 2001.

[0213] A swivel lever 2011, which is arranged to be rotatable or pivotable about its own pivot axis S, is provided for each of the two ports 100.

[0214] A connector 4001 of a disposable according to the present disclosure (not further shown) is inserted into port 100 being shown at the top left. The corresponding swivel lever 2011 is pulled out of the housing 2001 so far such that there is space for the connector 4001 between a rear side of a stop 2017 of the swivel lever 2011 and the port 100, as far as the connector should protrude from the port 100. The stop 2017 serves as protection against unintentional pulling of connector 4001 out of the associated port 100 in a direction along or parallel to the swivel axis S. It prevents the connector 4001 from moving in the direction of the exterior A and/or parallel to the swivel axis S. A returning element 2041 may exert pressure on the connector 4001 in the direction of port 100 by the stop 2017 and thereby prevent it from slipping out.

[0215] To remove the disposable 4000 or its connector 4001 from the port 100, the swivel lever 2011 can be pulled out of the housing 2001 by a few centimeters by the handle section 2013 along the swivel axis S and, after this pulling out, rotated or swiveled, for example, counterclockwise. The pivoting may bring about a release of the connector 4001 in that the stop 2017, which is also rotated away about the swivel axis S by the pivoting movement, clears the path for it to be pulled out of the port 100. If the connector 4001 is pulled out of the port 100 and thus separated from the medical treatment apparatus 2000, the second end-side opening 52 of the port 100, which is now open, can be closed by the rinsing cap 200. For this purpose, the swivel lever 2011 is rotated clockwise until the rinsing cap 200 received in the receiving section 2015 is in front of the second end-side opening 52. When the handle section 2013 is released, the optional returning element 2041 pulls the swivel lever 2011 and thus the therewith releasably connected rinsing cap 200 towards the second end-side opening 52. The movement ends when the rinsing cap 200 is firmly seated in or on the second end-side opening 52. In order to allow this movement to run in a controlled manner and to prevent the formation of drop flight that could result from an abrupt movement, a damping element can be provided which has a damping effect on the force applied by the returning element 2041.

[0216] It cannot be seen from the figure that the swivel lever 2011 includes a recess or groove for inserting or receiving a section of the edge of an end-side closing plate or closing disc 4027 of the connector 4001. If the swivel lever 2011 is pulled, e.g., in order to pivot it from a connection position, in which the port 100 is connected to the disposable 4000, into another pivot position, the connector 4001 can be pulled out of the port 100 in a controlled manner by this movement.

[0217] FIG. 9 shows a procedure flow diagram of a medical treatment apparatus 2000 being described herein, here a blood treatment apparatus, connected to an extracorporeal blood circuit 300, which can be connected, to the vascular system of the patient, not shown, for treatment using double-needle access, or by using, e.g., an additional Y-connector (reference numeral Y), for treatment using single-needle access, as shown in FIG. 9. The extracorporeal blood circuit 300 may be present, optionally in sections thereof, in or on a blood cassette.

[0218] Pumps, actuators and/or valves in the area of the extracorporeal blood circuit 300 are connected to the medical treatment apparatus 2000 or to a control device 150 encompassed by it.

[0219] The extracorporeal blood circuit 300 includes (or is connected to) an arterial patient tube clamp 302 and an arterial connection needle of an arterial section or of an arterial patient line, blood collection line or first line 301. The extracorporeal blood circuit 300 also includes (or is connected to) a venous patient tube clamp 306 and a venous connection needle of a venous section, a venous patient line, a blood return line or a second line 305.

[0220] A blood pump 101 is provided in or at the first line 301, a substituate pump 111 is connected to a dialysis liquid inlet line 104 for conveying fresh dialysis liquid, which is filtered in a further filter stage (F2) (substituate). A substituate line 105 may be fluidically connected to the dialysis liquid inlet line 104. Using the substituate pump 111, substituate may be introduced by predilution, via a predilution valve 107, or by postdilution, via a postdilution valve 109, via associated lines 107a or 109a into line sections, for example into the arterial line section 301 or into the venous line section 305 (here between a blood chamber 303b of a blood filter 303 and a venous air separation chamber or venous blood chamber 329) of the extracorporeal blood circuit 300.

[0221] The blood filter 303 includes the blood chamber 303b connected to the arterial line section 301 and to the venous line section 305. A dialysis liquid chamber 303a of the blood filter 303 is connected to the dialysis liquid inlet line 104 leading to the dialysis liquid chamber 303a and to a dialysate outlet line 102, which guides dialysate, i.e., spent dialysis liquid, leading away from the dialysis liquid chamber 303a. Dialysis liquid chamber 303a and blood chamber 303b are separated from each other by a mostly semi-permeable membrane 303c. It represents the separating borderline between the blood side with the extracorporeal blood circuit 300 and the machine side with the dialysis liquid or dialysate circuit, which is shown in FIG. 9 to the left of the membrane 303c.

[0222] The arrangement in FIG. 9 encompasses an optional detector 315 for detecting air and/or blood. The arrangement of FIG. 9 further encompasses one or two pressure sensors PS1 (upstream of the blood pump 101) and PS2 (downstream of the blood pump 101, it measures the pressure upstream of the blood filter 303 (“pre-hemofilter”)) at the points shown in FIG. 9. Further pressure sensors may be provided, e.g., pressure sensor PS3 downstream of the venous blood chamber 329.

[0223] An optional single-needle chamber 317 is used in FIG. 9 as a buffer and/or compensating reservoir in a single-needle procedure in which the patient is connected to the extracorporeal blood circuit 300 using only one of the two blood lines 301, 305.

[0224] The arrangement of FIG. 9 also encompasses an optional detector 319 for detecting air bubbles and/or blood.

[0225] An optional Heparin addition site 325 may be provided.

[0226] On the left in FIG. 9, a mixing device 163 is shown, which provides a predetermined mixture for the respective solution from the containers A (for A concentrate via concentrate supply 166) and B (for B concentrate via concentrate supply 168) for use by the medical treatment apparatus 2000. The solution contains heated water, heated e.g. in the heating device 162, (on-line, e.g., as reverse osmosis water or from bags) from the water source 155.

[0227] A pump 171, which can be referred to as concentrate pump or sodium pump, is fluidly connected to the mixing device 163 and a source of sodium, for example the container B, and/or coveys out of it. An optional pump 173, which is assigned to container B, for example for bicarbonate, can be seen.

[0228] The optional compressor mentioned herein has the reference numeral 175 and is connected to port 100.

[0229] Furthermore, FIG. 9 shows an drainage line or discharge line 153 for the effluent. An optional heat exchanger 157 and a first flow pump 159, which is suitable for degassing, complete the arrangement shown.

[0230] A further pressure sensor may be provided as PS4 downstream of the blood filter 303 on the water side, but preferably upstream of the ultrafiltration pump 131 in the dialysate outlet line 102 for measuring the filtrate pressure or membrane pressure of the blood filter 303. Additional, optional pressure measuring points P may also be provided.

[0231] Blood leaving the blood filter 303 flows through an optional venous blood chamber 329, which may include a de-aeration device 318 and may be in fluid communication with the pressure sensor PS3.

[0232] The exemplary arrangement shown in FIG. 9 includes the control device or closed-loop control device 150. It may be in a wired or wireless signal connection with any of the components mentioned herein—especially or in particular with the blood pump 101—to control or regulate the medical treatment apparatus 2000.

[0233] By using the device for on-line mixing of the dialysis liquid, a variation of its sodium content, controlled by the control device 150, is possible within certain limits. For this purpose, in particular the measured values determined by the conductivity sensors 163a, 163b may be taken into account. Should an adjustment of the sodium content of the dialysis liquid (sodium concentration) or of the substituate turn out to be necessary or desired, this can be done by adjusting the conveyance rate of the sodium pump 171.

[0234] In addition, the medical treatment apparatus 2000 includes means for conveying fresh dialysis liquid and dialysate.

[0235] A first valve may be provided between the first flow pump 159 and the blood filter 303, which first valve opens or closes the inflow towards the blood filter 303 at the inlet side. A second, optional flow pump 169 which conveys dialysate through the drainage line 153 is provided, e.g., downstream of the blood filter 303. A second valve may be provided between the blood filter 303 and the second flow pump 169 at the outlet side, which second valve opens or closes the outflow.

[0236] Furthermore, the medical treatment apparatus 2000 optionally includes a device 161 for balancing the flow flowing into and out of the dialyzer 303 on the machine side. The device 161 for balancing is preferably arranged in a line section between the first flow pump 159 and the second flow pump 169.

[0237] The medical treatment apparatus 2000 further includes means, such as the ultrafiltration pump 131, for the precise removal of a volume of liquid, as predetermined by the user and/or by the control device 150, from the balanced circuit.

[0238] Sensors such as the optional conductivity sensors 163a, 163b serve to determine the conductivity, which in some embodiments is temperature-compensated, as well as the fluid flow upstream and downstream of the dialyzer 303.

[0239] Temperature sensors 165a, 165b may be provided as one or a plurality thereof. Temperature values supplied by them may be used to determine a temperature-compensated conductivity.

[0240] A leakage sensor 167 is optionally provided. It may be provided at or in port 100.

[0241] Further flow pumps in addition or alternatively to, e.g., the one with the reference numeral 169 may also be provided.

[0242] A number of optional valves are each denoted with V in FIG. 9; by-pass valves with VB.

[0243] In some embodiments, the control device 150 determines the electrolyte and/or liquid balance based on the measured values of the aforementioned optional sensors.

[0244] Filters F1 and F2 can be provided, connected in series.

[0245] Even when using non-pure water, the filter F1 exemplarily serves herein to generate sufficiently pure dialysis liquid by the mixing device 163, which then flows through the blood filter 303, e.g., using the countercurrent principle.

[0246] The filter F2 exemplarily serves herein to generate sterile or sufficiently filtered substituate from the sufficiently pure dialysis liquid leaving the first filter F1, by filtering, e.g., pyrogenic substances. This substituate may then be safely added to the extracorporeally flowing blood of the patient and thus ultimately to the patient's body.

[0247] The medical treatment apparatus 2000 is optionally shown in FIG. 9 as a device for hemo(dia)filtration. However, hemodialysis apparatuses are also covered by the present disclosure, although not specifically represented in a figure.

[0248] A possible position of the port 100 within the medical treatment apparatus 2000 can be seen.

[0249] The present invention is not limited to the embodiment described above, this only serves for illustration.

[0250] The arrow shown in FIG. 9 generally indicate the flow direction in FIG. 9.

LIST OF REFERENCE NUMERALS

[0251] 100 port [0252] 1 end section [0253] 3 first fluid guide (inner) [0254] 5 second fluid guide (outer) [0255] 31 first lumen [0256] 32 first end-side opening [0257] 47 sterile air inlet line [0258] 48 connection for drainage line or discharge line [0259] 51 second lumen [0260] 52 second end-side opening [0261] 52a fillet [0262] 54 opening, e.g. groove [0263] 57 recess [0264] Å exterior [0265] C center point [0266] H height [0267] Q transverse direction [0268] Q.sub.R reference cross-section [0269] I interior [0270] M center line [0271] S swivel axis [0272] 2000 medical treatment apparatus [0273] 2001 housing [0274] 2002 fluid line [0275] 2003 fastening or fixing section [0276] 2005 adjacent housing sections [0277] 2007 edge [0278] 2007a first section [0279] 2007b second section [0280] 2009 indentation [0281] 2011 swivel lever [0282] 2013 handle section [0283] 2015 receiving section [0284] 2017 stop [0285] 2031 leak sensor [0286] 2041 returning element [0287] 4000 disposable [0288] 4001 connector [0289] 4002 fluid line [0290] 4003 rib structure [0291] 4003a rib [0292] 4003b rib [0293] 4003c rib [0294] 4004 connector lumen [0295] 4005 ribs [0296] 4007a recess [0297] 4007b recess [0298] 4009 disc structure [0299] 4015 connector [0300] 4017 touch-protection cover [0301] 4019 connection opening [0302] 4021 wall [0303] 4023 opening [0304] 4025 drip disc [0305] 4027 closing plate or closing disc [0306] 101 blood pump [0307] 102 dialysate outlet line [0308] 104 dialysis liquid inlet line [0309] 105 substituate line [0310] 107 predilution valve [0311] 107a line corresponding or belonging to the predilution valve [0312] 109 postdilution valve [0313] 109a line corresponding or belonging to postdilution valve [0314] 111 substituate pump [0315] 131 ultrafiltration pump [0316] 150 control device [0317] 153 drainage line or discharge line [0318] 155 water source [0319] 157 heat exchanger [0320] 159 first flow pump [0321] 161 device for balancing [0322] 162 heating device [0323] 163 mixing device [0324] 163a conductivity sensor [0325] 163b conductivity sensor [0326] 165a temperature sensor [0327] 165b temperature sensor [0328] 166 concentrate supply [0329] 167 leak sensor [0330] 168 concentrate supply [0331] 169 second flow pump [0332] 171 pump, natrium pump [0333] 173 pump, bicarbonate pump [0334] 175 compressor [0335] 200 rinsing cap [0336] 202 outer edge of the rinsing cap [0337] 204 first groove [0338] 205 front side or face of the rinsing cap [0339] 207 edge of the front side or face [0340] 208 second groove [0341] 300 extracorporeal blood circuit [0342] 301 first line (arterial line section) [0343] 302 (first) tube clamp [0344] 303 blood filter or dialyzer [0345] 303a dialysis liquid chamber [0346] 303b blood chamber [0347] 303c semipermeable membrane [0348] 305 second line (venous line section) [0349] 306 (second) tube clamp [0350] 315 detector [0351] 317 single-needle chamber [0352] 318 deaeration device [0353] 319 detector [0354] 325 addition site for Heparin [0355] 329 venous blood chamber (optional) [0356] F1 filter [0357] F2 filter [0358] A container [0359] B container [0360] P pressure measuring points [0361] PS1 arterial pressure sensor (optional) [0362] PS2 arterial pressure sensor (optional) [0363] PS3 pressure sensor (optional) [0364] PS4 pressure sensor for measuring the filtrate pressure (optional) [0365] V valves [0366] VB bypass valves [0367] Y connector