DE102020126226A1 - Disposable and single port system - Google Patents

Abstract

The present invention relates to a disposable (4000), which has a fluid line (4002) and a connector (4001) with a connector lumen (4004), for fluidly connecting the fluid line (4002) to a first lumen (31) of a first fluid line (3 ) a port (100) which further comprises a second lumen (51). It also relates to a system with a disposable (4000) according to the invention and with a port (100) for establishing a fluid connection between at least one fluid line (2002) of the treatment device (2000) assigned to the interior (I) of a treatment device (2000) and the connector ( 4001) of the fluid line (4002) of the disposable (4000) associated with the exterior (Ä) of the treatment device (2000).

Description

The present invention relates to a disposable according to claim 1 and a system according to claim 7. It also relates to a rinsing cap and a medical-technical treatment device as disclosed herein.

Medical technology treatment devices regularly have one or more ports. Lines are connected to them in order to conduct fluids out of the interior of the medical-technical treatment device, or vice versa. In the case of one-way lines, one speaks of disposables.

One object of the present invention is to specify a further disposable that is suitable for this purpose. Another system should also be specified. Furthermore, a rinsing cap and a medical-technical treatment device are disclosed.

The object according to the invention is achieved by a disposable having the features of claim 1, also by means of the flushing cap disclosed herein, which is also part of the present invention and can be claimed accordingly. The same applies to the medical-technical treatment device disclosed herein. The object according to the invention is also achieved by a system having the features of claim 7 .

According to the invention, a disposable is proposed which has a fluid line and a connector with a connector lumen. The disposable is used for fluidically connecting the fluid line to a first lumen of a first fluid line of a port. The port in turn has a second lumen. This is used to hold a section of a connector, the connector having a contact-protection cover with a free connection opening, the connector lumen surrounded by a wall ending in an opening inside the contact-protection cover, the free connection opening and the opening of the wall having a minimum distance of at least 5 mm, preferably at least or exactly 10 mm apart.

The system according to the invention has a disposable according to the invention. It also has a port which is used to establish a fluid connection between at least one fluid line of a medical treatment device that is assigned to, faces or is included in the interior of the treatment device and a connector of a fluid line that is also included in the disposable according to the invention. The fluid conduit is not part of the treatment device, but is associated herein with, faces, or is associated with the exterior of the treatment device. The fluid line of the disposable can be, for example, a hose set or a part thereof, a substitute line or the like.

The port has, mostly in an end section thereof, a first fluid guide, which is or comprises a first lumen through which flow can take place in its longitudinal direction, with a first end opening or opening plane. The fluid guide is provided for receiving and/or guiding a medical fluid and for establishing the fluid connection with the connector.

The port also has a second fluid guide that is provided further outward (relative to the port) relative to the first fluid guide. The second fluid guide comprises at least one second lumen and a second end opening or opening plane. The first fluid guide is therefore further inside the port than the second fluid guide, in any case the first end opening is further inside the port than the second end opening.

In this case, the first end opening of the first fluid guide is arranged, at least in sections, in the second lumen of the second fluid guide.

The present invention also relates to a plug-in system with a receiving part, e.g. B. the port mentioned here, and with a part to be inserted here, e.g. B. the connector mentioned herein.

The female part has a rim, preferably raised, which is annular in a first portion with an inner radius, a second portion of the rim not being part of the inner radius annular shape formed by the first portion.

The male part has a disc structure which is preferably round or has a round edge portion with an outer radius which corresponds to a value between 90% and 99.9% of an inner radius of the female part and/or at most 1 mm, preferably at most 0 5 mm, particularly preferably 0.1 mm, is smaller than the inner radius of the first section, and/or wherein the outer edge section or the outer radius of the disk structure is at most 1 mm, preferably at most 0.5 mm, particularly preferably 0.1 mm Has distance to the first portion of the edge.

The present invention also relates to a method for disconnecting or separating the Flushing cap from the port or in preparation for such disconnection or disconnection, which is feasible using the devices disclosed herein. The method includes providing a system according to the invention, wherein the flushing cap is plugged onto or into the port. The method further includes introducing air or sterile air into the port using a compressor prior to disconnecting the irrigation cap. The initiation can be initiated automatically by the control device of the treatment device; a corresponding open-loop or closed-loop control can be prepared. The aim of introducing it can be to introduce compressed air into the port before separating the flushing cap to empty liquid and thus to remove a large part of the liquid still present in the port by displacing it from the port with the compressed air. The method may further include disconnecting the irrigation cap from the port. Disconnecting can be accomplished using and moving the pivot lever as disclosed herein.

Embodiments according to the invention can have some, some or all of the following features in any combination, insofar as this is not clearly technically impossible for a person skilled in the art. Advantageous developments of the present invention are also the subject matter of the dependent claims.

In all of the above or following statements, the use of the expression “can be” or “can have” etc. is to be understood as synonymous with “is preferably” or “has preferably” etc. and is intended to explain embodiments according to the invention.

Whenever numerical words are mentioned herein, the person skilled in the art understands them as indicating a numerical lower limit. Provided that this does not lead to a discernible contradiction for the person skilled in the art, the person skilled in the art always reads “at least one” or “at least one” when specifying “a” or “an”. This understanding is also encompassed by the present invention, as is the interpretation that a numerical word such as "a" can alternatively be meant as "exactly one" wherever this is clearly technically possible for a person skilled in the art. Both are encompassed by the present invention and apply to all numerals used herein.

Whenever spatial references such as "above", "below", "upper" or "lower" are mentioned, the person skilled in the art understands these in case of doubt as a spatial indication with reference to the orientation in the figures attached here and/or the arrangement of the port in its intended use.

Reference herein to an embodiment always represents an exemplary embodiment according to the invention and is not to be construed as limiting.

If it is disclosed herein that the object according to the invention has one or more features in a specific embodiment, it is also disclosed herein that the object according to the invention expressly does not have this or these features in other embodiments that are also according to the invention, e.g. B. in the sense of a disclaimer. For each embodiment mentioned herein, the contrary embodiment, for example formulated as a negation, is also disclosed.

The plug-in system according to the invention can be further developed in embodiments with any feature disclosed herein in any combination.

In some embodiments, the port or attachment portion preferably has a, preferably raised, rim that may protrude beyond, be set back relative to, or be flush with adjacent housing portions. Additionally or alternatively, the second opening is optionally set back relative to the edge or relative to the adjacent housing sections. The latter can prevent the ingress of liquids, which could reach the port from the outside, mostly accidentally, for example when cleaning the housing or when liquids are spilled by staff or patients, by allowing such liquids to be drained downwards past the opening of the port .

The port entrance, or second opening, is in some embodiments set back relative to the attachment portion or its edge. The latter can also make it difficult or prevent the entry of liquids from the outside.

In some embodiments of the system according to the invention, the second end opening of the second fluid guide of the port has a smaller cross-sectional area or opening area on the outside than a cross-sectional area or opening area of the second lumen, which is arranged further inside the treatment device than the second end opening. In this case, the outer diameter of the first fluid guide is preferably constant, in particular in a region in which the cross-sectional area or opening area of the second lumen increases axially, in particular towards the interior of the port or the treatment device. In this way, on the one hand, a sufficiently large distance between the first Created opening of the first fluid guide and the inner wall of the second lumen, which counteracts the formation of liquid bridges between opening and inner wall due to the sufficiently large distance created between these two. Drops hanging between the opening and the inner wall advantageously tear off due to the distances selected inside the port between the opening and the inner wall. On the other hand, the cross-sectional area of the second lumen does not correspond to the cross-sectional area of the second opening, ie the opening of the second lumen to the outside. When opening the rinsing cap, the user therefore has to exert less force (due to the comparatively small peripheral surface, which also forms the sealing surface), than if the second opening and thus also the rinsing cap had a diameter like the second lumen further inside the port.

In some embodiments, no section of an edge of the first fluid guide, which delimits the first opening, is at a distance from an inner wall delimiting the second lumen that is not at least 7 mm.

In some embodiments, this distance corresponds additionally or alternatively to at least 1.1 times, 1.5 times or 2 times the difference between the radius of the outer peripheral surface of the first fluid guide and the radius of the inner peripheral surface of the second opening, ie z. B. there, where they bordering side surfaces (e.g. in a longitudinal section, as shown in 1 or 2 shown) are parallel and/or at a constant angle to one another.

In some embodiments, the second opening is that region of the second lumen or the second fluid guide in which it has delimiting side surfaces (e.g. in a longitudinal section as shown in 1 or 2 shown) are parallel to each other or stand.

In some embodiments, the second lumen of the second fluid guide of the port has at least one longitudinal section which is not delimited by side walls (e.g. upwards and downwards), which are parallel to one another and/or are at a constant angle to one another. In some embodiments, this longitudinal section is at least 3 mm long, preferably at least 5 mm long, particularly preferably at least 1 cm long. It is optionally further outward (relative to the housing of the treatment device or to the port) than the first opening. In this way, a distance is created between the inner wall of the second lumen and the first opening of the first fluid guide, which counteracts liquid transfer between the two during the treatment.

In some embodiments, the second lumen of the second fluid guide of the port has no longitudinal section in its longitudinal direction and/or no longitudinal section over at least 90% of its length and/or no longitudinal section with the exception of the section with the second opening, each of which is at least 3 mm long, is preferably at least 5 mm long, particularly preferably at least 1 cm long and optionally lies further outwards than the first opening, which is or would be delimited in a longitudinal section by side walls which are parallel and/or at a constant angle to one another.

In some embodiments, the second lumen of the port has a first cross-sectional area defined by sidewalls of that lumen. This is preferably smaller than any other cross-sectional area delimited by the side walls of the second lumen, which faces further into the interior of the second lumen than the first cross-sectional area, i.e. lies further inside the port or in the treatment device than the first cross-sectional area.

In some embodiments of the port, the second lumen widens, at least in sections, in the direction of the interior of the port or the treatment device.

In some embodiments, the second lumen of the port has at least three cross-sections, each having a larger cross-sectional area toward the interior of the port or treatment device than the preceding one of those cross-sections.

In some embodiments, the second lumen of the port does not have a circular cross-sectional area in at least one cross-section.

In some embodiments of the system according to the invention, the first lumen of the port ends or opens in a funnel-shaped or divergent shape in the first end opening.

In some embodiments, in at least one cross-section of the port, the cross-sectional area of the first lumen is not concentric with the cross-sectional area of the second lumen. Alternatively or additionally, the side walls of this cross section that delimit the second lumen are not evenly spaced from a center line of the first lumen, which runs in the longitudinal direction of the first lumen, and/or the sections on the circumference of this cross section are not all equally spaced from this centerline.

In some embodiments of the port, the second lumen has at least one cross-sectional area which has a smaller extension in its transverse direction than in its height.

In some embodiments, the second lumen of the port has at least one opening, e.g. B. a groove which is arranged on or in a side wall which delimits the second lumen and preferably extends in the circumferential direction of the second lumen or a portion thereof. The opening preferably leads to an opening in the second lumen which, by means of a connection, serves or can serve to connect the second lumen to a drain or discharge line.

In some embodiments, the first end opening of the first fluid guide of the port faces further into the interior of the port than the second end opening of the second fluid guide, i.e. it lies further inwards. The first end opening of the first fluid guide is at least 5 mm, preferably at least 10 mm, more preferably at least 15 mm further in than the second end opening of the second fluid guide.

In some embodiments, the cross-sectional area of the second lumen of the port always and/or continuously decreases from a cross-section in which the opening plane of the first end opening of the first lumen lies in the axial direction up to the beginning of the opening, e.g. up to the beginning of the groove to.

In some embodiments, the inner wall of the first lumen is shaped so that it converges or widens towards the first opening, at least in sections. The angle can e.g. B. be 2 °.

In some embodiments, the wall or outer wall which surrounds the connector lumen is shaped to diverge or taper towards the opening of the connector lumen, at least in sections. The angle can e.g. B. be 2 °.

In some embodiments, the inner wall of the first lumen and the wall or outer wall surrounding the connector lumen are inclined at an identical amount of angle from the centerlines of their lumens.

In some embodiments, the first lumen is only tapered in the first third of the first fluid conduit, or only in the first 1.5 mm to 3 mm. An opening angle of the first fluid guide can be between 10° and 20°, for example, preferably 15°.

In some embodiments, the length of the first fluid conduit including the optional tapered portion is no more than 30mm or no more than 35mm.

In some embodiments, a radially outer boundary or outer wall of the first fluid guide is spaced from any radially inner surface of the side wall or inner wall of the second lumen throughout the free length of the first fluid guide, or at least in sections. This distance is at least 5 mm, preferably at least 8 mm. In this case, the free length can be that section of the first fluid guide which protrudes into the second lumen.

In some embodiments, the cross-sectional area of the first lumen of the port always and/or steadily decreases from a cross-section in which the opening plane of the first opening of the first fluid guide also lies over a predetermined distance in the axial direction away from the first end-side opening of the first fluid guide . This predetermined distance is preferably at least 10 mm, particularly preferably at least 20 mm or at least 30 mm.

In some embodiments, an edge or wall of the second end opening of the port has at least one fillet or a negative or concave fillet of a thickness or caliper of the edge or wall. They form defined entry points for air which, when the rinsing cap is opened, which closes this second end opening of the second lumen when the port is in use, which flows in when the rinsing cap is pulled out of the port due to the short-term negative pressure created in the port. If the groove is preferably provided on an upper edge section, the air flows there and thus at a point in the port at which, due to gravity, less residual liquid will have remained than in others, e.g. B. lower areas. If a liquid residue has formed in the outer region of the rinsing cap before the rinsing cap is opened, the groove(s) prevent a liquid cylinder from forming around the rinsing cap. This has the advantage that a liquid cylinder does not implode when the rinsing cap is pulled out, which could lead to the formation of droplets, dispersion and aerosol formation and thus carryover of residual liquid particles into the interior of the port or out of the port.

In some embodiments of the system, the port also includes a leakage sensor, preferably a conductivity sensor. The leakage sensor preferably protrudes into the second lumen, ie it stands out from a side wall and ends freely. The leakage sensor is preferably a pin, pin, ring or tube or has a pin, pin, ring or tube.

In some embodiments, the leakage sensor carries or includes an insulating layer. It can prevent erroneous measurements due to residual moisture, particularly if it protrudes beyond a wall to which the leakage sensor is connected.

In some embodiments of the port, the second lumen, in particular an inner surface of the side wall or inner wall of the second lumen, has a depression in its lower region. In a longitudinal section, in which the center line of the first fluid guide runs, the recess has a greater extension on the lower side than in at least two planes or all planes parallel thereto. The longitudinal section can be in the plane of the drawing 1 or the 2 correspond to or lie parallel to it.

In some embodiments, the second lumen, and in particular an inner surface of the side wall or inner wall of the second lumen, has a depression at the bottom. In at least one section which is not parallel to either a longitudinal section or a cross section through the second lumen, this depression has a section with a triangular or wedge-shaped shape. Here, the tip of this shape is directed towards the inside of the port.

In some embodiments of the system according to the invention, this has a medical-technical treatment device (hereinafter also abbreviated to: treatment device), which in turn has a housing with a fastening section. The attachment section serves to connect the medical-technical treatment device to a port, preferably the port as described herein, or vice versa.

A port can optionally be accommodated in the attachment section of the medical-technical treatment device, in particular a port as disclosed herein.

In some embodiments, the edge of the fastening section of the medical-technical treatment device runs annularly in a first section thereof with or under an inner radius, ie with a constant curvature. A second portion of the rim is not part of the inner radius annular shape formed by the first portion. Thus, it does not run below the constant inner radius of the first section.

In some embodiments of the system according to the invention, the treatment device has a pivoting lever. This is arranged so that it can pivot about a pivot axis that preferably runs perpendicular to the housing surface, the pivot lever having a receiving section and/or a stop.

The optional receiving section is provided for releasably receiving a rinsing cap, which is used to temporarily close the second lumen of the second fluid guide by or after pivoting the pivoting lever into a first pivoting position of the pivoting lever. To close the second lumen, the pivoted lever is rotated or pivoted until the rinsing cap, which is accommodated in the receiving section, is in front of the second lumen of the second fluid guide. In some embodiments, the optional receiving portion releasably includes a flushing cap, particularly as described herein.

The optional stop is intended to temporarily prevent an axial separating movement, which would lead to the connector of the disposable according to the invention being separated from the fastening section, ie z. B. pulling the connector out of the port. This axial separating movement is prevented by, or after, the pivoted lever has been pivoted into a second pivoted position of the pivoted lever. In the second pivot position z. B. arranged a stop of the pivoting lever in front of the connector.

In some embodiments, a sensor is provided and correspondingly connected in signal z. B. connected to the control device of the treatment device, which detects the handle position or predetermined positions that the handle occupies or can occupies. A successful, or sufficient, connection of the disposable in the port can thus be determined, monitored, etc., as well as optionally its disconnection. Alarms, indications, notifications, etc. can be provided by the signal coming from this sensor, as well as optional interventions in the control of the treatment device, which e.g. B. can be configured to block or interrupt predetermined treatment options or functions of the treatment device if the signal does not correspond to certain specifications or does correspond to it.

In some embodiments of the system, the flushing cap, which is used to temporarily close the second end opening of the port, is releasably accommodated in the receiving section of the pivoting lever. In some embodiments, the rinsing cap has an end face which faces the interior of the medical treatment device when the rinsing cap is in use and which has an axially and/or radially raised edge on its circumference.

In some embodiments, the rinsing cap further has a first indentation or first groove running in or on its peripheral side.

In some embodiments, the rinsing cap also has a second indentation or second groove running in or on its peripheral side, which preferably adjoins the raised edge axially.

In some embodiments, the raised edge of the irrigating cap has a wedge-shaped or triangular portion in a longitudinal section of the irrigating cap. This section can describe an isosceles triangle and/or run towards the point on both sides of the point at an angle of the same size. In certain embodiments it can thus be ensured that less residual liquid remains in the port after the rinsing caps have been disconnected.

In some embodiments, the pivoting lever of the medical-technical treatment device is arranged for pivoting about the pivot axis into a third pivoting position. In this third pivoting position of the pivoting lever, neither the receiving section for releasably receiving a rinsing cap nor the stop for temporarily preventing an axial separating movement for separating the connector of the disposable is arranged in the axial direction in front of the second lumen of the port.

In some embodiments, the irrigation cap has an outer rim that is preferably round or has a rounded rim portion with an outer radius that is between 90% and 99.9% of the inner radius of the first portion of the rim of the treatment device.

In some embodiments, the pivoting lever of the treatment device has an indentation or groove. It is designed for inserting a portion of the edge of an end plate or disc of the connector. The recess is provided so that by pulling on the pivot lever, z. B. on a handle thereof, by means of the depression in which the edge of the end plate or disc is inserted, not only the pivoting lever releases the port, but at the same time the connector is pulled from the port.

In some embodiments of the system according to the invention, the port is included in the fastening section of the treatment device in such a way that a center line of the first fluid guide or the first lumen is inclined 4° or more degrees to a placement surface of the medical treatment device.

In some embodiments, the system includes a displacement device, by means of which the pivoted lever of the treatment device can be displaced or guided in a translatory manner along the pivot axis. The displacement device can be part of the pivoting lever. The pivoting lever can preferably only be displaced or guided to a limited extent or only by a predetermined distance by means of the displacement device. A limiting stop can be provided for this purpose. The shifting or guiding preferably takes place during use and/or without the use of tools.

In some embodiments, the port or treatment device includes a return element, such as a spring. The restoring element is used for translational movement of the receiving section and/or for prestressing the receiving section in the axial direction. Alternatively or additionally, the port or the treatment device has a damping device for damping a translational movement caused by the restoring element.

In some embodiments of the system, the irrigation cap is sized such that the first indentation or groove and the second indentation or groove of the irrigation cap are in fluid communication with each other when the irrigation cap is inserted into the port. As a result, fluids can preferably flow in the axial direction on the outside along the flushing cap from the first groove or indentation into the second groove or indentation, or vice versa. The second groove or indentation results from the special design of the edge of the front surface of the flushing cap, as described in detail below.

In some embodiments of the system, the connector has a rib structure on an outside thereof. This rib structure preferably extends to the connection opening, which is intended to be inserted at least in sections into the second lumen of the port when the connector is connected to the medical-technical treatment device, or to the front end of the disposable or the connector.

In some embodiments, the rib structure has adjacent ribs which laterally delimit depressions lying or arranged between them. In this case, the distance occupied by the recesses of an outer, circular circumference of the connector, in which the cross-sectional area of the rib structure is not formed by ribs but by depressions, i.e. gaps between ribs, occupies in a cross section, preferably between 5% and 15%, more preferably between 10% and 12%, or more, of the cross-sectional area of the connector.

In some embodiments of the system, the connector has a disk structure. Preferably, the disc structure is round or has a round rim portion with an outer radius that is between 90% and 99.9% of the inner radius of the first portion of the rim of the connector. Alternatively or additionally, the outer radius of the disk structure is at most 1 mm, preferably at most 0.5 mm, particularly preferably 0.1 mm smaller than the inner radius of the first section. Alternatively or additionally, the outer edge section or the outer radius of the disk structure is at most 1 mm, preferably at most 0.5 mm, particularly preferably 0.1 mm away from the first section of the edge.

Ribs, or another suitable surface structure, can bring about a non-gastight connection between the connector and the second opening accommodating it. So if the connector is pushed into the port, it will not push or pull any residual liquid that can adhere to the inner wall forming the second opening into the interior of the port. Rather, the ribs can absorb such liquid residues between them, possibly also aided by capillary forces, which is why they can remain on the connector.

Furthermore, such ribs can act as a ventilation option by ensuring rapid pressure equalization when the connector is inserted into the port or when it is pulled out of the port.

As ventilation options, they can also conduct compressed air, which is blown into the port to clean or dry it, to the outside. This promotes air distribution inside the port and leads to complete or faster drying of residual liquid, which counteracts the spread of germs through liquid.

In some embodiments, the connector has a connector with a lumen through which fluid can flow. The mostly flexible fluid line is connected to the mostly rigid connector by means of this lumen, with the lumen of the connector through which fluid can flow and the connector lumen being at an angle of between 80° and 100° to one another.

In some embodiments, the connector has a contact protection cover with a free connection opening, wherein the connector lumen, surrounded by a wall, opens into an opening inside the contact protection cover. In this case, the free connection opening and the opening in the wall are preferably at a minimum distance of at least 10 mm from one another.

In some embodiments, the connector includes a drip washer. The drip disc is arranged between disc structure and rib structure or between disc structure and protective cover.

The term "fluid guide" as used herein, in certain embodiments of the present invention, generally refers to a physical arrangement of elements intended to contain and/or direct, guide and the like fluids. Examples of this are pipes, hoses, channels, lines, chambers, fluid-guiding devices, etc.

In certain embodiments of the present invention, the first fluid guide is provided for discharging or discharging a medical fluid from an outlet opening of the first fluid guide (ie out of the port), e.g. B. in the environment, in an exterior, in the connected disposable, etc.

The term "medical fluid" as used herein in certain embodiments of the present invention generally refers to liquids such as dialysate, substituate liquid, drug solutions, priming and/or rinsing and/or sterilizing fluids and the like, as well as gases, e.g. B. sterile air, as well as any combination or mixture of the same and with the same. In certain embodiments of the present invention, the medical fluid is suitable and/or intended or intended for an extracorporeal blood treatment.

In certain embodiments of the present invention, the medicinal fluid is substituate liquid, in some embodiments of the present invention, substituate liquid produced on-line by a treatment device.

A rinsing cap, as used in certain embodiments of the present invention, designates a closure device which is designed and/or provided for to close or seal the port from an exterior of the port by closing or sealing its second opening of the second lumen. It can preferably be a closure cap.

The flushing cap can seal the port against an outside in a fluid-tight manner. The lumens of the port can be in fluid contact with an interior of the irrigation cap.

In certain embodiments of the present invention, the flushing cap is intended to enable or promote cleaning of the port.

The rinsing cap can be designed to be pivotable and/or displaceable automatically or in an automated manner.

In certain embodiments of the present invention, the connector or its end portion comprises or consists of, for example, PEEK (polyetheretherketone) or PEEK with PTFE (polytetrafluoroethylene) admixture. This or a similar combination of materials that is also provided can advantageously reduce the connection forces to be overcome at the port due to the good sliding properties.

In certain embodiments of the present invention, the port has a hydrophilic coating at least in some sections or is made of a hydrophilic material in these sections.

To a drop flight z. B. during the away or pivoting of the rinsing cap, a hydrophilic coating of the port and / or the rinsing cap may be preferred in certain embodiments of the present invention.

In some embodiments, the port is part of a machine-side substitute system of the medical treatment device.

In certain embodiments, the port on the medical-technical treatment device is provided at an angle to the horizontal.

In certain embodiments, the port can be attached at an angle of 8°±3° to the horizontal.

In some embodiments according to the invention, the port is arranged such that in at least one position (rinsing position, connection position, etc.) its first lumen has an inclination to the horizontal as described above, with this inclination the free end of the first lumen being lower than other sections of this. Such an inclination, in particular in combination with the optionally hydrophilic coating or the optionally hydrophilic material of the inner wall of the second lumen, can promote non-tearing formation of a film of residual liquid moving in the direction of a connection for the drain or outflow line. This can be discharged from the port via the drain or waste line with almost no residue.

In certain embodiments of the system according to the invention, the treatment device disclosed is designed as an extracorporeal treatment device, in particular as an extracorporeal blood treatment device, for example as a dialysis device, in particular as a hemodialysis device, hemofiltration device, hemodiafiltration device, or as a device for adsorption, liver replacement therapy, apheresis, transfusion, etc.

In certain embodiments of the present invention, the treatment device has at least one device for introducing air into the second fluid guide.

A "means for introducing air" as used herein in certain embodiments of the invention comprises a system or an arrangement which is designed to introduce or introduce air into the second fluid guide, such as blowing in and/or sucking in.

In certain embodiments, the device for introducing air comprises means for generating sterile air or sterile compressed air from e.g. B. ambient air such as at least one filter or sterile filter, a compressor and the like. The compressor can be prepared, and a control device of the treatment device can be prepared for a corresponding control or regulation in order to fill the port with compressed air before opening the flushing cap for emptying and thus remove a large part of the liquid from the port in advance, and although preferably before opening the flushing cap.

The device for introducing the sterile air can be provided at any point of the second fluid guide, but at a point different from the second opening or the free end of the second lumen.

In some embodiments, the port has no spring element, e.g. B. to be able to move the first fluid guide in an axial direction within the port against the spring force.

In some embodiments, the port has no screw section and/or no thread that would be provided to connect the disposable to the port.

In some embodiments, the outer diameter of the first fluid guide is constant, at least in a free area of the first fluid guide.

In some embodiments, the rib structure has ribs in, or of, at least or exactly two lengths that are different from one another.

In some embodiments, some of the ribs of the rib structure extend to the connection opening or to the front end of the disposable or the connector, which end is inserted as intended into the second lumen of the port when the connector is connected to the medical-technical treatment device, while others do not.

In some embodiments, some or all of the ribs, in particular the rib structure, have in cross-section at least one non-rounded, sharp-edged or right-angled longitudinal boundary or edge, in particular in the transition to adjacent depressions, at least over a portion of the rib in question. The longitudinal boundary or edge can, for. B. have a radius of at most 0.1 mm, preferably at most 0.05 mm, which can result in the sharpness or which causes it.

In some embodiments, the connector includes a drip disk and disk structure. Ribs are arranged between the drip disc and the disc structure, which ribs preferably extend at an angle of between 75° and 105° to a lumen of the connector through which fluid can flow and/or are parallel to one another. They thus point away from a central axis of the lumen surrounding the rib structure at the angles specified here and/or are parallel to one another.

In some embodiments, the rib structure comprises at least 16 ribs distributed over the circumference of the protective cover, preferably at least 18, particularly preferably at least or exactly 20.

In some embodiments, the disposable has an end plate or disk that is not circular, e.g. B. end.

In certain embodiments, the rim delimiting the first opening is spaced from the inner wall of the second lumen. At no point is this distance less than 5 mm, 6 mm, 7 mm or 8 mm.

In some embodiments, the port and disposable are designed in such a way that the wall surrounding the connector lumen that carries fluid when in use is inserted at least in sections into the first lumen of the first fluid guide of the port when the port and disposable are plugged in or in use.

In some embodiments, the length of the contact protection sleeve is defined in such a way that the end face of the contact protection sleeve, which surrounds the connection opening, is guided through the inner wall of the second end opening or the second lumen adjoining it during insertion of the connector into the second lumen of the port that it cannot come into contact with the first fluid guide, in particular not with its end opening and/or the end boundary of the end opening.

In some embodiments, the first end opening of the first fluid guide of the port faces further into the interior of the port than the second end opening of the second fluid guide.

In some embodiments, the length of the protective sleeve and/or the distance between the free connection opening and the opening of the connector lumen are defined in such a way that the end face of the opening of the connector and/or the wall of the opening during 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 end-side opening or front-side boundary.

In some embodiments, the system further comprises a medical-technical treatment device, which has a housing with a fastening section for connecting the medical-technical treatment device to the port, and/or the port, wherein the fastening section has an edge, which optionally protrudes over adjacent housing sections and/or or is raised above them.

In some embodiments, the medical-technical treatment device has a pivoting lever, arranged for its pivoting about a pivoting axis, the pivoting lever having a stop for temporarily preventing an axial separating movement for separating the connector of the disposable from the fastening section by or after pivoting the Pivoted lever into a second pivoted position of the pivoted lever. The stop is designed to limit rotation of the inserted connector about the longitudinal axis of its connector lumen, in particular in interaction with the end plate or disc of the disposable.

In some embodiments, some or all of the externally accessible sections or parts of the pivoted lever (such as handles, stop, etc.) are dimensioned so large that they do not protrude into the interior of the protective cover or do not protrude as far as the connector opening therein can be inserted. This geometric matching of pivoted lever and contact protection sleeve to one another can advantageously help to prevent at least the connector from being accidentally touched by non-sterile sections of the pivoted lever.

In some embodiments, the outer rim portion or the outer radius of the disk structure is at least 3 mm, preferably 4 mm, 4.6 mm or more distance from the second portion of the rim.

In some embodiments, the disk structure has a thickness of less than 1.5 mm, particularly preferably a maximum of 1 mm. Alternatively or additionally, less than 1.5 mm, particularly preferably a maximum of 1 mm, of the thickness or thickness of the pane structure is or can be inserted into the edge.

Some or all embodiments according to the invention can have one, several or all of the advantages mentioned above and/or below.

The present invention provides a port which can advantageously meet the highest hygiene requirements that are placed on medical treatment methods.

By means of the present invention, an environment that is as germ-free as possible can advantageously be ensured at the connections between the disposable and the blood treatment device. This can help prevent germs from entering the patient's blood and thus increase patient safety. This is a consequence of the further reduction of residual liquids in the area of the second fluid guide of the port, which may have preceded an initial emptying of the port by introducing air, which is why z. B. only a small amount of residual liquid (usually about 5 .mu.l - 10 .mu.l) remained in the port.

A further advantage of the present invention can be that the transfer of germs to the patient by means of aerosols, which can occur due to dynamic negative and positive pressure conditions with fast movements during the connection and disconnection of disposable and rinsing cap, is reduced or prevented by means of the present invention .

By avoiding contact between the inner or first and outer or second fluid guide, the formation of so-called “liquid bridges” is advantageously prevented. This also contributes to reducing or avoiding the transfer of germs into the bloodstream and thus to increased patient safety.

The conductivity sensor can be used to detect microleakage within the port during treatment.

Furthermore, it can be considered an advantage that the inside of the port is protected from being touched by the operating personnel, which also helps to prevent or avoid the entry of germs into the patient's bloodstream.

It can thus advantageously be possible with the port to ensure sterility even in the moist environment prevailing in or on the connector, in which there is usually a risk of germ accumulation, and thus to minimize or completely rule out a risk of contamination for users and/or patients.

An optional, hydrophilic coating of the port, in particular in or on the end section thereof, can also advantageously contribute to preventing liquid droplets from flying away when the connector is opened.

Another benefit can be the management of residual fluid in the port prior to disconnecting the disposable, which is collected and directed to the drain or waste line, optimizing port emptying.

Another advantage can be that when the disposable is inserted or the rinsing cap is on, there is a very narrow gap in the upper area of the closure to the port lumen, through which liquids on the surface of the device are drawn inwards by capillary forces and down there along the disposable or the rinsing cap to run. If the edge of the fastening section were circular, the liquid would collect in the lower area of the disposable or rinsing cap. However, due to the larger gap between the front of the machine and the disposable or the rinsing cap in the lower area, the liquid can run off and does not get into the interior of the port. A poetic conclusion to Machine front, which would lead to the formation of drops or aerosols during connection and disconnection processes due to the pressure equalization, can thus be advantageously avoided.

All or some of the advantages that can be achieved with the disposable according to the invention can also be achieved undiminished with the disclosed rinsing cap, the disclosed medical-technical treatment device and/or the system according to the invention.

• 1 zeigt schematisch einen Port eines erfindungsgemäßen Systems zur Verbindung eines erfindungsgemäßen Disposable mit einer medizintechnischen Behandlungsvorrichtung des Systems in Fluidkommunikation;
• 2 zeigt einen Ausschnitt der 1 in Vergrößerung;
• 3 zeigt in einer perspektivischen Ansicht von rechts den Port der 1 in einem Längsschnitt;
• 4 zeigt ausschnittsweise die Vorder- oder Seitenansicht einer medizintechnischen Behandlungsvorrichtung mit Blick auf einen Gehäuseabschnitt hiervon;
• 5 zeigt den Konnektor eines nur abschnittsweise gezeigten erfindungsgemäßen Disposable;
• 6 zeigt den Konnektor der 5 in einer teilweisen Schnittdarstellung;
• 7 zeigt den Verbindungszustand zwischen Port und Konnektor in einem vereinfachten Längsschnitt;
• 8 zeigt zwei Ports, welche jeweils in einem Befestigungsabschnitt eines Gehäuses aufgenommen sind; und
• 9 zeigt schematisch vereinfacht einen Fluidleitungsaufbau einer medizintechnischen Behandlungsvorrichtung.

In the following, the present invention is described with reference to the attached figures. In the drawings, identical reference characters designate the same or identical elements. The following applies:

• 1 shows schematically a port of a system according to the invention for connecting a disposable according to the invention to a medical treatment device of the system in fluid communication;
• 2 shows a section of the 1 in magnification;
• 3 shows the port in a perspective view from the right 1 in a longitudinal section;
• 4 shows a detail of the front or side view of a medical-technical treatment device with a view of a housing section thereof;
• 5 shows the connector of a disposable according to the invention, shown only in sections;
• 6 shows the connector of 5 in a partial sectional view;
• 7 shows the connection status between port and connector in a simplified longitudinal section;
• 8th Figure 12 shows two ports each received in a mounting portion of a housing; and
• 9 shows a simplified schematic of a fluid line structure of a medical-technical treatment device.

1 shows a port 100 in a first embodiment of the system according to the invention.

The port 100 has a first fluid guide 3 with at least one first lumen 31 and a first opening 32 at the end. Flow can flow through the first lumen 31 in its longitudinal direction, denoted by its center line M. Fluid present in the first lumen 31 can leave the first fluid guide 3 by means of the first opening 32 at the end.

The port 100 also has a second fluid guide 5 with at least one second lumen 51 and a second opening 52 at the end. For reference purposes, the second end opening 52 in the embodiment of FIG 1 as a transition from an exterior Ä the in 1 understood or referred to only hinted medical treatment device 2000 to an interior I of the port 100 or the medical treatment device 2000.

The first fluid guide 3 is located in an interior of the second fluid guide 5 and, in relation to the port 100, its first opening 32 is further in the interior I of the port 100 or in 1 only indicated medical treatment device 2000 (i.e. further inside) than the second opening 52 of the second fluid guide 5.

The second end opening 52, which may be an opening plane, is provided to allow a portion of a connector 4001 (see Fig 5 ) inserting a disposable 4000 according to the invention into the interior of the port 100, with the aim of connecting between the first fluid guide 3 and a connector lumen 4004, see 6 to establish a fluid connection. The second opening at the end should preferably guide the connector 4001 in a positionally stable manner.

The port 100 is intended to establish a fluid connection between at least one fluid line 2002 of the treatment device 2000 that is assigned or faces or is included in the interior I of a medical treatment device 2000, on the one hand, and a fluid line 4002 of the fluid-carrying disposable 4000 that is assigned to the connector 4001 of the exterior Ä of the treatment device 2000 on the other hand. The connection is preferably made in an end section 1 of port 100.

1 shows a fastening portion 2003 for fastening the port 100 to the FIG 1 only indicated medical treatment device 2000. The port 100 leads into 1 by a housing section of a housing 2001 of the medical treatment device 2000, which is delimited by adjacent housing sections 2005.

1 shows the port 100 in a state where it is not connected to a connector 4001. It is closed with a rinsing cap 200. 1 thus shows the port 100 in a "flushing state" or "closure state" of the port 100.

The rinsing cap 200, which is placed on the port 100, closes the second end opening 52 and thus the interior of the port 100 and the two fluid guides 3, 5 against an exterior Ä of the port 100 and/or the medical treatment device. 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. An end face 205 of the rinsing cap faces the interior I.

The rinsing cap 200 can have a groove 204 on or at its peripheral side, which is explained in more detail below.

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

In an end region of the second lumen 51 opposite the second opening 52, at least one opening 54 can be provided on or in its side wall, which 1 lies in front of the plane of the drawing and is therefore not shown due to the cut, in 3 however, yes. Their function is related to the representation of 3 explained below.

A leakage sensor 2031 is optionally provided in order to be informed at an early stage in the event of a leakage, for example from the fluid connection established between the fluid line 2002 of the treatment device 2000 on the one hand and the fluid line 4002 on the other. Appropriate voltage sources, leads, evaluation devices and alarm devices can be provided and suitably programmed where necessary.

1 also shows a receiving section 2015 as part of a pivoting lever, which is shown in 8th denoted by reference numeral 2011. The recording section 2015 of the otherwise in 1 not shown pivoting lever, which is indicated here by a screw, is used to releasably accommodate at least a portion of the rinsing cap 200 here.

A handle 2013 of the pivoting lever can also be seen. It is used by the user to pull the rinsing cap 200 out of the port 100 by pulling on the handle and in the axial direction (i.e. in 1 to the left) and thus to end the rinsing position.

It can be seen that the second lumen 51 of the second fluid guide 5 has at least one longitudinal section whose side walls (top and bottom in the sectional view of 1 ) in a direction along or parallel to the center line M (left-right in 1 ) are not parallel to each other and/or are not at a constant angle to each other. Rather, the cross-sectional area of the second lumen 51 always or even continuously increases to the right, as away from the second end opening 52, over a certain distance.

The second lumen 51 optionally has a first cross-sectional area bounded by the sidewalls of the lumen 51 which is smaller than any other cross-sectional area of the second lumen 51 bounded by the sidewalls of the lumen 51 which faces further towards the interior I of the second lumen 51 than the first cross-sectional area, as is the case at least from a region just before the first end-side opening 32 further to the right in 1 you can see. As a result, the second lumen 51 widens at least in sections in the direction of the interior I.

1 FIG. 12 further shows that the first lumen 31 can optionally terminate in a funnel or divergent shape in the first end opening 32. FIG.

An opening of a sterile air supply line 47, which z. B. the medical-technical treatment device 2000 can be provided. It is preferably located at an end of the second lumen 51 opposite the second end opening 52, preferably on an upper side wall of the port 100.

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

From a cross section in which the opening plane of the first end opening 32 of the first lumen 31 also lies, the cross-sectional area of the second lumen 51 increases in the axial direction up to the beginning of an opening of the port, which expands the second lumen radially in at least one cross section and/or in which the opening of the sterile air supply line 47 is located, always and/or steadily.

As 1 As can be seen, the edge that delimits the first opening 32 is at a distance from the inner wall of the second lumen 51 . At no point is this distance less than 5 mm, 6 mm, 7 mm or 8 mm. It can be seen that the distance due to the widening of the second Lumens 51 inwards, ie to the right, is due. If this widening of the second lumen 51 did not exist, the distance between the edge and the inner wall of the second lumen 51 would be equal to the difference between the radius of the outer peripheral surface of the first fluid guide 3 and the radius of the inner peripheral surface of the second opening 52, in which the they are parallel to each other and/or at a constant angle to the delimiting side surfaces. Due to the widening, however, the distance is greater. In the present example, it is at least 1.1 times this difference. The sales thus achieved or increased (compared to an embodiment without the in 1 shown expansion) 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 opening 31 of the first fluid guide 3 and thus ultimately serves to protect the patient from germs transferred in this way.

2 shows a section of the 1 in magnification.

2 12 shows that the second opening 52 may be in or close off a longitudinal portion (in the axial direction) in which the peripheral surfaces forming the second opening 52 are parallel to each other. Sections located further towards the interior of the port 100 and adjoining the second opening 52 contribute to the aforementioned widening of the second lumen 51 .

The circumferential, first groove 204, which is shown in a longitudinal section of the rinsing cap 200, as shown in 2 is shown, a z. B. can have a U-shaped, V-shaped or W-shaped profile, allows liquids that hit the rinsing cap 200 from the outside, mostly accidentally, for example when cleaning the housing or when liquids are spilled by staff or patients, to be drained off. down away. The flow path defined in this way leads such a liquid in a targeted manner away from the front area of the rinsing cap 200, through which it could sooner or later get into the interior of the port 100.

Such a flow path is indicated by the arrows.

The circumferential second groove 208 results from the special design of the front edge of the flushing cap 200.

3 shows the port 100 of FIG. 1 in a perspective view from the right 1 in a longitudinal section with a view of the cut-open port 100 and the end face 205 of the rinsing cap 200 and its edge 207.

A reference cross-section _QR is drawn - solely for reasons of reference.

While there may be cross-sections of the second lumen 51 which have a circular cross-sectional area, as can be seen from the reference cross-section _QR , the view in FIG 3 but also that the second lumen 51 can have at least one cross-section which does not have a circular cross-sectional area. This includes the cross-sections, which 3 each lie to the right of the reference cross-section Q _R , ie facing an interior I.

If one considers, for example, that cross section in which the first end opening 32 is also located, then this cross section is represented in FIG 3 It can be seen that the second lumen 51 optionally has at least one cross-sectional area which has a smaller extent in its transverse direction Q than in its height H perpendicular thereto, which is in 3 extends in a top-bottom direction.

3 shows further that in at least one cross-section of the port 100 the cross-sectional area of the first lumen 31 is not arranged concentrically in the cross-sectional area of the second lumen 51, which is already due to the fact that the second lumen 51 is in a region or cross-section in which it is the first Having fluid guide 3 or the first lumen 31, for its part is not cylindrical.

Furthermore shows 3 that the side walls of this cross section delimiting the second lumen 51 and/or its circumference do not have to be evenly spaced from a center line M of the first lumen 31, as is the case with the cross section in which the first end opening 32 is also located, or one further inwards , i.e. on the right, lying cross-section can be seen.

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

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

As 3 as can be seen, the opening 54 is preferably at that end of the second Lumen 51, which the second end opening 52 is opposite.

The opening 54 can be connected via a line (not shown) to a drain line 153 ( 9 ), which has an in 8th Port 48 shown may be in fluid communication with lumen 51.

The rim 207 can be designed to be as in 3 shown to protrude no further than 90° (or a range between 80° and 100°) from an axial centerline of the irrigation cap or axial centerline M of the port 100 in the inserted condition of the irrigation cap 200 and/or in the relaxed condition.

4 shows a detail of the front or side view of a medical treatment device 2000 with a view of a housing section thereof, which has a fastening section 2003 for fastening a port, e.g. B. the port 200 has.

The fastening section 2003 serves to accommodate a port, which in turn serves to connect it to a disposable, in particular according to the invention. The attachment portion 2003 is used in particular to accommodate the ports 100, z. B. the previous figures, in or on the housing 2001 of the medical treatment device 2000.

in the in 4 Attachment section 2003 shown is actually also attached to such a port. You can see the port in 4 not, however, since it lies behind the plane of the drawing and is also covered by a connector 4001 shown in cross section of a disposable that is otherwise not shown.

However, the connector lumen 4004, which is centrally located here as an example, can be seen with a center point C, as well as the ones also shown in 5 and 6 shown cover plate of a touch protection sleeve shown in the following figures 4017. The height of the connector 4001, in which this for the representation of 4 is cut is in 5 specified.

The optional, too 1 The aforementioned edge 2007, which delimits the attachment section 2003 from adjacent housing sections 2005 all the way round or just in sections and optionally protrudes beyond this in one direction out of the plane of the drawing, is in 4 to recognize.

The edge 2007 points in 4 exemplarily the first section 2007a, which has the course of a part of a ring, with a center point C, which corresponds to the center of the connector lumen 4004 of the connector 4001 shown only in sections thereof in section.

The second portion 2007b of the rim 2007 is not part of the ring shape about the center point C formed by the first portion 2007a. The second section 2007b delimits a dent or indentation 2009 of the fastening section 2003, the base of which does not run parallel to the surface of adjacent housing sections 2005, or largely does not do so. The second section 2007b forms with the first section 2007a the only optional peripheral edge 2007. In the area of the dent or indentation 2009, the lower edge of the only optional peripheral edge 2007, i.e. the second section 2007b, is further away from the center C than the upper edge the only optional circumferential edge 2007, ie the first section 2007a.

It can be seen that the connector 4001 and especially its contact protection cover 4017, see also 5 , carries a plurality of ribs 4003a and 4003b on its outer wall. Their radially outer dimensions allow the connector 4001 to be pushed into the second lumen 51 with the desired fit.

In the 5 The disc structure 4009 shown serves as an example of an optional flange to achieve a positive fit in the radial direction with respect to the inner wall of the first section 2007a. It can thus cover the area circumscribed by the first section 2007a, but not the area circumscribed only by the second section 2007b.

In this case, the disc structure 4009 can have an outer radius which is only slightly smaller than the inner radius of the first section 2007a.

One or more grooves 52a, which, starting from the inside of the second opening 52, mean a reduction in the wall thickness of the second fluid guide 5, are used for early air intake during the separating movement, through which the connector 4001 is separated from the port 200 by pulling on the connector 4001.

5 shows the connector 4001 of a disposable 4000 according to the invention, shown only in sections, which additionally has a fluid line 4002 and can be or include a blood tubing set, a substituate line, etc.

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

The connector 4001 optionally has a rib structure 4003 on an outside, which is in radial contact with the inner wall of the second end opening 52 of the second fluid guide 5 in the connection state described above.

The rib structure 4003 has ribs 4003a, 4003b adjacent to one another, between which depressions 4007a, 4007b result, which are delimited laterally or in their transverse direction by the ribs 4003a, 4003b due to the optional longitudinal course of the ribs 4003a, 4003b in the axial direction.

In a cross section of the connector 4001 (e.g. measured from the base of the ribs to the tip of the ribs, i.e. in the radial direction), the depressions 4007a, 4007b make up between 5% and 15%, preferably between 10% and 12% of the cross-sectional area of the connector Connector 4001 in this cross section. The cross-sectional area of the connector has z. B. an extent or an inner radius, which extends to the side or end face of the rib specifically considered that radially terminates the ribs 4003a, 4003b.

Furthermore, the connector 4001 can have a disk structure 4009, which runs essentially perpendicularly to a longitudinal central axis of the connector 4001 (in 5 in a top-bottom direction). The disc structure 4009 is preferably round or has a round edge portion with an outer radius. The outer radius corresponds to 90% to 99.9% of the inner radius of the first section 2007a of the rim 2007. Alternatively or additionally, the outer radius of the disk structure 4009 is at most 1 mm, preferably at most 0.5 mm, particularly preferably 0.1 mm smaller than the inner radius of the first section 2007a. Alternatively or additionally, the outer edge section or the outer radius of the disc structure 4009 has a distance of at most 1 mm, preferably at most 0.5 mm, particularly preferably 0.1 mm from the first section 2007a of the edge 2007.

The connector 4001 has a connector 4015 with a lumen through which fluid can flow, by means of which the fluid line 4002 of the disposable 4000 according to the invention is or can be connected to the connector 4001 . Through this connection, or in this connection, the flow-through lumen of the connector 4015 and the connector lumen 4004, or their center lines, are at an angle of between 80° and 100° to one another, for example.

The connector 4001 has a touch protection sleeve 4017 ending with the free or end connection opening 4019 . Inside the contact protection sleeve 4017, the connector lumen 4004 surrounded by a wall 4021 opens into an opening 4023. The free connection opening 4019 and the opening 4023 of the wall 4021 are preferably spaced apart by a minimum distance of at least 10 mm, preferably at least 14 mm.

At its end opposite the free or terminal connection opening 4019, the connector 4001 can have an end plate or disc 4027. It can be arranged perpendicular to the center line of the connector lumen 4004 . It can protrude radially on its circumference or along its entire circumference over structures adjoining it or over all structures adjoining it. The end plate or disk 4027 can be used to be partially received by means of a groove of the pivoting lever 2011 with a corresponding pivoting of the pivoting lever 2011 . This can be pulling out the connector 4001 when tightening the handle 2013 of the pivoting lever 4011, see 8th , facilitate.

6 shows the connector 4001 of the 5 in a partial sectional view.

7 shows the connection status between port 100 and connector 4001 in a simplified longitudinal section, in which the connector lumen 4004 is not shown.

It can be seen that when air is introduced into the second lumen 52 via the sterile air supply line 47 to dry or empty the second lumen 52 (see the flow paths of the air indicated by arrows), these ribs 4003a do not lie in the plane of the drawing due to the incision , 4003b - their way out of the second lumen 52 past the rib structure 4003 or between the ribs (not shown), through the second opening 52 of the second fluid guide 5, around the drip disk 4025 of the connector 4001 and essentially under the disk structure 4009 through, which below offers a lower flow resistance between its radial edge and the edge than at the top, since the gap it has at the top to the first portion 2007a of the edge 2007 is intentionally kept smaller is than the gap it has down to the second section 2007b. Liquid impinging on the port from the outside, e.g. B. liquid spilled by staff or patient, thus does not reach the area behind the disc structure 4009 entry area of the
Ports 100, but flows further out already on the disk structure 4009 down. The same advantageous effect can be achieved through a suitably selected geometry for the port and rinsing cap.

8th FIG. 12 shows two ports 100 each accommodated in a mounting portion of a housing 2001. FIG.

A pivoting 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.

A connector 4001 of a disposable according to the invention, which is not shown in any more detail, is inserted into the port 100 shown at the top left. The associated pivoting lever 2011 has been pulled out of the housing 2001 so far that between a rear side of a stop 2017 of the pivoting lever 2011 and the port 100 there is space for the connector 4001 to the extent that it should protrude from the port 100 . The stop 2017 serves to protect against the connector 4001 being unintentionally pulled out of the associated port 100 in a direction along the pivot axis S or parallel to it. It prevents the connector 4001 from moving towards the outside Ä and/or parallel to the pivot axis S. A restoring element 2041 can exert pressure on the connector 4001 in the direction of the port 200 by means of the stop 4017 and thereby prevent it from slipping out.

To remove the disposable 4000 or its connector 4001 from the port 100, the pivoted lever 2011 can be pulled out of the housing 2001 by a few centimeters along the pivot axis S using the handle section 2013 and, after this withdrawal, rotated or pivoted counterclockwise, for example . Pivoting can cause the connector 4001 to be released in that the stop 2017 , which is also turned away about the pivot axis S by means of the pivoting movement, clears the way for it to be pulled out of the port 100 . If the connector 4001 has been pulled out of the port 100 and thus separated from the medical-technical treatment device 2000 , the second opening 52 of the port 100 that is now open can be closed by means of the rinsing cap 200 . To do this, the pivoting lever 2011 is rotated clockwise until the flushing cap 200 accommodated in the accommodation section 2015 is in front of the second opening 52 . When the handle section 2013 is released, the optional restoring element 2041 pulls the pivoting lever 2011 and thus the rinsing cap 200 detachably connected to it towards the second opening 52 . The movement ends when the flushing cap 200 is firmly seated in or on the second opening 52 . In order to allow this movement to take place in a controlled manner and to prevent droplets from flying, which could result from an abrupt movement, a damping element can be provided which has a damping effect on the force applied by the restoring element 2041 .

It cannot be seen from the figure that the pivoting lever 2011 has a depression or groove for inserting or receiving a section of the edge of an end plate or disk 4027 of the connector 4001. If the pivoting lever 2011 is pulled, e.g. B. to pivot it from a connection position, in which the port 100 is connected to the disposable 4000 according to the invention, into another pivot position, then the connector 4001 can already be pulled out of the port 100 in a controlled manner by means of this movement.

9 shows a process diagram of a medical treatment device 2000 described herein, here a blood treatment device, connected to an extracorporeal blood circuit 300, which can be used for treatment by means of double-needle access, or using z. B. an additional Y-connector (reference Y) as in 9 shown can be connected to the vascular system of the patient, not shown, by means of a single-needle access. The blood circuit 300 can optionally be present in portions thereof in or on a blood cassette.

Pumps, actuators and/or valves in the area of the blood circuit 300 are connected to the treatment device 2000 or to one of these, e.g. B. included control device 150 connected.

The blood circuit 300 includes (or is connected to) an arterial patient tubing clamp 302 and an arterial connection needle of an arterial segment or arterial patient line, blood sampling line or first line 301 . The blood circuit 300 further includes (or is connected to) a venous patient tube clamp 306 and a venous connection needle of a venous section, venous patient line, blood return line or second line 305 .

A blood pump 101 is provided in or on the first line 301, a substituate pump 111 is connected to a dialysis fluid supply line 104 for conveying fresh dialysis fluid, which is filtered in a further filter stage (F2) (substi tuat), connected. A substituate line 105 may be fluidly connected to the inflow line 104 . By means of the substituate pump 101, substituate can be introduced by pre-dilution, via a pre-dilution valve 107, or by post-dilution, via a post-dilution 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 blood circuit 300 are introduced.

The blood filter 303 has the blood chamber 303b connected to the arterial line section 301 and to the venous line section 305 . A dialysis fluid chamber 303a of the blood filter 303 is connected to the dialysis fluid inlet line 104 leading to the dialysis fluid chamber 303a and a dialysate outlet line 102 leading away from the dialysis fluid chamber 303a and carrying dialysate, ie used dialysis fluid. Dialysis fluid chamber 303a and blood chamber 303b are separated from one another by a mostly semi-permeable membrane 303c. It represents the separating sheath between the blood side with the extracorporeal blood circuit 300 and the machine side with the dialysis liquid or dialysate circuit, which is 9 shown to the left of membrane 303c.

The arrangement of 9 includes an optional detector 315 for detecting air and/or blood. The arrangement of 9 also includes 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”)) to the in 9 shown positions. Additional pressure sensors can be provided, e.g. B. the pressure sensor PS3 downstream of the venous bladder chamber 329.

An optional single-needle chamber 317 comes in 9 as a buffer and/or compensating tank in a single-needle method, in which the patient is connected to the extracorporeal blood circuit 300 by means of only one of the two blood lines 301, 305.

The arrangement of 9 also includes an optional detector 319 for detecting air bubbles and/or blood.

An addition point 325 for heparin can optionally be provided.

left in 9 a mixing device 163 is shown, which provides a predetermined mixture for the respective solution for use by the treatment device 2000 from the containers A (for A concentrate via the concentrate supply 166) and B (for B concentrate via the concentrate supply 168). The solution contains, in z. B. the heater 16 heated water (online, e.g. as reverse osmosis water or from bags) from the water source 155.

A pump 171, which may be referred to as a concentrate pump or sodium pump, is fluidly connected to and/or delivers from the mixing device 163 and a source of sodium, such as container B. An optional pump 173 associated with container B, such as for bicarbonate, can be seen.

The optional compressor referred to herein is referenced 175 and communicates with port 100.

Next is in 9 a drain 153 for the effluent can be seen. An optional heat exchanger 157 and a first flow pump 159 suitable for degassing complete the arrangement shown.

Another pressure sensor can 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 discharge line 102 to measure the filtrate pressure or membrane pressure of the blood filter 303 . Further, optional pressure measuring points P can also be provided.

Blood leaving the blood filter 303 flows through an optional venous blood chamber 329 which may have a vent 318 and be in fluid communication with the pressure sensor PS3.

In the 9 The exemplary arrangement shown has the control or regulating device 150 . It can be in a wired or wireless signal connection with each of the components mentioned here—at least or in particular with the blood pump 101—for controlling or regulating the treatment device 2000 .

By means of the device for online mixing of the dialysis liquid, it is possible to vary its sodium content, controlled by the control device 150, within certain limits. In particular, the measured values determined by means of conductivity sensors 163a, 163b can be included for this purpose. If an adjustment of the sodium content of the dialysis fluid (sodium concentration) or of the substituate is required or desired, this can be done by adjusting the delivery rate of the sodium pump 171 .

In addition, the treatment device 2000 includes means for conveying fresh dialysis fluid and dialysate.
A first valve can be provided between the first flow pump 159 and the blood filter 303, which opens or closes the inlet to the blood filter 303 on the inlet side. A second, optional flow pump 169 is z. B. provided downstream of the blood filter 303, which promotes dialysate to the drain 153. A second valve can be provided between the blood filter 303 and the second flow pump 169, which opens or closes the outlet on the outlet side.

Furthermore, the treatment device 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 area between the first flow pump 159 and the second flow pump 169 .

The treatment device 2000 also includes means for the exact removal of a volume of liquid specified by the user and/or by the control device 150 from the balanced circuit, such as the ultrafiltration pump 131.

Sensors such as the optional conductivity sensors 163a, 163b are used to determine the conductivity, which is temperature-compensated in some embodiments, and the liquid flow upstream and downstream of the dialyzer 303.

Temperature sensors 165a, 165b can be provided individually or in groups. According to the invention, temperature values supplied by them can be used to determine a temperature-compensated conductivity.

A leakage sensor 167 is optionally provided. It can be provided on or in the port 100 .

Other flow pumps in addition or as an alternative to e.g. B. that with the reference numeral 169 can also be provided.

A number of optional valves are in 9 each marked with a V. Bypass valves are marked with VB.

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

Filters F1 and F2 can be connected in series.

The filter F1 is used here, for example, to produce sufficiently pure dialysis liquid by means of the mixing device 163 itself using impure water, which can then, e.g. B. in the countercurrent principle, through the blood filter 303 flows.

The filter F2 is used here, for example, to remove z. B. pyrogenic substances to generate sterile or sufficiently filtered substituate, which can safely be fed to the extracorporeal flowing blood of the patient and thus ultimately the patient's body.

The treatment device 2000 is in 9 Although optionally shown as a device for hemo (dia) filtration. However, hemodialysis devices also fall under the present invention, although not specifically shown by means of the figure.

A possible position of the port 100 within the treatment device 2000 can be seen.

The present invention is not limited to the embodiment described above, which is merely illustrative.

In the 9 Arrowheads shown enter in 9 generally indicates the direction of flow.

Reference List

100

port

1

end section

3

first fluid guide (inside)

5

second fluid guide (outside)

12

heating device

31

first lumen

32

first end opening

47

sterile air supply

48

Connection for drain line or waste line

51

second lumen

52

second end opening

52a

fillet

54

opening, e.g. Glasses

57

deepening

61

heating device

63

mixing device

Ä

exterior

C

Focus

H

Height

Q

transverse direction

QR

reference cross-section

I

interior

M

centerline

S

pivot axis

2000

medical treatment device

2001

housing

2002

fluid line

2003

attachment section

2005

adjacent housing sections

2007

edge

2007a

first section

2007b

second part

2009

indentation

2011

swing lever

2013

handle section

2015

recording section

2017

attack

2031

leakage sensor

2041

return element

4000

Disposable

4001

connector

4002

fluid line

4003

rib structure

4003a

rib

4003b

rib

4003c

rib

4004

connector lumen

4005

ribs

4007a

deepening

4007b

deepening

4009

disk structure

4015

Interconnects

4017

protective cover

4019

connection opening

4021

wall

4023

opening

4025

draining disc

4027

end plate or disc

101

blood pump

102

dialysate drain line

104

dialysis liquid supply line

105

Substituate line

107

predilution valve

107a

line associated with the pre-dilution valve

109

post dilution valve

109a

line associated with the post-dilution valve

111

substituate pump

131

ultrafiltration pump

150

control device

153

Drain or waste line

155

water source

157

heat exchanger

159

first flow pump

161

Device for balancing

163a

conductivity sensor

163b

conductivity sensor

165a

temperature sensor

165b

temperature sensor

166

concentrate supply

167

leakage sensor

168

concentrate supply

169

second flow pump

171

pump, sodium pump

173

pump, bicarbonate pump

175

compressor

200

rinse cap

202

outer edge of the flushing cap

204

first groove

205

face of the flushing cap

207

edge of the face

208

second groove

300

extracorporeal blood circuit

301

first line (arterial line segment)

302

(first) hose clamp

303

blood filter or dialyzer

303a

dialysis fluid chamber

303b

blood chamber

303c

semi-permeable membrane

305

second line (venous line section)

306

(second) hose clamp

315

detector

317

Single needle chamber

318

ventilation device

319

detector

325

Addition point for heparin

329

venous blood chamber (optional)

700

blood pressure measuring device

800

blood volume monitor

F1

filter

F2

filter

A

container

B

container

D

predetermined duration

P

pressure gauges

PS1

arterial pressure sensor (optional)

PS2

arterial pressure sensor (optional)

PS3

Pressure sensor (optional)

PS4

Pressure sensor for measuring the filtrate pressure (optional)

V

valves

vb

bypass valves

Y

Y connector

Claims (19)

Disposable (4000), which has a fluid line (4002) and a connector (4001) with a connector lumen (4004), for fluidly connecting the Fluid line (4002) with a first lumen (31) of a first fluid line (3) of a port (100) of a medical treatment device (2000), the port (100) further having a second lumen (51) for receiving a section of the connector (4001 ), wherein the connector (4001) has a protective cover (4017) with a free connection opening (4019), wherein inside the protective cover (4017) the Connector lumen (4004) surrounded by a wall (4021) in an opening (4023), wherein the free connection opening (4019) and the opening (4023) of the wall (4021) have a minimum distance of at least 5 mm, preferably at least or exactly 10 mm have from each other. Disposable (4000) after claim 1 , wherein the connector (4001) has a rib structure (4003) on an outside thereof, which preferably extends up to the connection opening (4019) or to the front end of the disposable (4000) or the connector (4001), and the rib structure (4003) is arranged to be inserted at least in sections into the second lumen (51) of the port (100) as intended when the connector (4001) is connected to the medical-technical treatment device (2000). Disposable (4000) according to one of the preceding claims, wherein the rib structure (4003) has ribs (4003a, 4003b, 4003c) adjacent to one another, which delimit depressions (4007a, 4007b) arranged between them, the proportion of the cross-sectional area of the rib structure (4003) , which make up or occupy the depressions (4007a, 4007b) in a cross section of the connector (4001) through the rib structure (4003), between 5% and 15%, or more, preferably between 10% and 12%, or more, of Make out the cross-sectional area of the connector (4001) in this cross-section. Disposable (4000) according to one of the preceding claims, wherein the rib structure (4003) has ribs (4003a, 4003b, 4003c) in at least or exactly two different lengths. Disposable (4000) according to one of the preceding claims, wherein some of the ribs (4003a, 4003b, 4003c) of the rib structure (4003) extend to the connection opening (4019) or to the front end of the disposable (4000) or the connector (4001) extend, while others do not. Disposable (4000) according to one of the preceding claims, wherein the connector (4001) has a drip disk (4025) and a disk structure (4009), ribs (4005) being arranged between the drip disk (4025) and disk structure (4009), which are preferably extend at an angle of between 75° and 105° to a flow-through lumen of the connector (4015) and/or are parallel to one another. Disposable (4000) according to one of the preceding claims, wherein the rib structure (4003) has at least 16 ribs (4003a, 4003b, 40003c) over the circumference of the protective cover (4017), preferably at least 18, particularly preferably at least or exactly 20. System with a disposable (4000) according to one of the preceding claims and with a port (100) for establishing a fluid connection between at least one of the interior (I) of a treatment device (2000) associated fluid line (2002) of the treatment device (2000) and the connector ( 4001) of the fluid line (4002) of the disposable (4000) assigned to the exterior (Ä) of the treatment device (2000), the port (100) having at least: - The first fluid guide (3) with at least one first lumen (31) and a first end opening (32), provided for receiving and / or guiding a medical fluid and for establishing the fluid connection with the connector (4001); and - the second fluid guide (5) with at least one second lumen (51) and a second end opening (52), the first end opening (32) of the first fluid guide (3), at least in sections, in the second lumen (51) of the second Fluid guide (5) is arranged. system after claim 8 , wherein the second end opening (52) of the second fluid guide (5) of the port (100) has a smaller cross-sectional area than a cross-sectional area of the second lumen (51), which is further inside (I) of the treatment device (2000) than the second end opening (52) is arranged, has. system according to one of the Claims 8 until 9 wherein the first lumen (31) of the port (100) terminates in a funnel or divergent shape in the first end opening (32). system according to one of the Claims 8 until 10 , wherein the edge that delimits the first opening (32) has a distance from the inner wall of the second lumen (51) which is at no point less than 5 mm, preferably not less than 6 mm, 7 mm or 8 mm. system according to one of the Claims 8 until 11 , wherein the length of the protective sleeve (4017) is determined such that the end face of the protective sleeve (4017), which surrounds the connection opening (4019), during the insertion of the connector (4001) into the second lumen (51) of the port (100) is guided through the inner wall of the second end opening (52) or of the second lumen (51) adjoining it in such a way that it does not come into contact with the first fluid guide (3), in particular not with its end-side boundary of the end opening (32), can come. system according to one of the Claims 8 until 12 , wherein the cross-sectional area of the second lumen (51) of the port (100) from a cross-section in which the opening plane of the first end-side opening (32) of the first lumen (31) also lies, in the axial direction up to the start of an opening (54) of the port (100), which expands the second lumen (51) radially in at least one cross section, always and/or continuously increases. system according to one of the Claims 8 until 13 , wherein the length of the protective sleeve (4017) and/or the distance between the free connection opening (4019) and the opening (4023) of the connector lumen (4004) are defined in such a way that the end face of the opening (4023) of the connector (4001) and /or the wall (4021) of the opening (4023) during the insertion of the connector (4001) into the second lumen (51) of the port (100) not in contact with the first fluid guide (3), in particular not with its end-side boundary end opening (32) can come. system according to one of the Claims 8 until 14 , Further comprising a medical-technical treatment device (2000), comprising a housing (2001) with a fastening section (2003) for connecting the medical-technical treatment device (2000) to the port (100). system according to one of the Claims 8 until 15 , wherein the port (100) or the attachment section (2003) has a preferably raised edge (2007), the edge (2007) running annularly in a first section (2007a) with an inner radius, with a second section (2007b ) of the rim (2007) is not part of the inner radius annular shape formed by the first portion (2007a). system after claim 15 or 16 , wherein the medical-technical treatment device (2000) has a pivoting lever (2011) arranged for its pivoting about a pivoting axis (S), wherein the pivoting lever (2011) has: - a stop (2017) for temporarily preventing an axial separating movement for separating the connector (4001) of the disposable (4000) from the attachment section (2003) by or after pivoting the pivoted lever (2011) into a second pivoted position of the pivoted lever (2011), the stop (2017) being designed to prevent the inserted connector (4001) from rotating to delimit the longitudinal axis of its connector lumen (4004), in particular in interaction with the end-side closing plate or disk (4027) of the disposable (4000). system according to one of the Claims 16 until 17 , wherein the connector (4001) has a disk structure (4009) which is preferably round or has a round edge portion with an outer radius which has a value between 90% and 99.9% of the inner radius of the first portion (2007a) of the edge (2007) and/or is at most 1 mm, preferably at most 0.5 mm, particularly preferably 0.1 mm smaller than the inner radius of the first section (2007a), and/or wherein the outer edge section or the outer radius of the disk structure (4009) at most 1 mm, preferably at most 0.5 mm, particularly preferably 0.1 mm distance from the first section (2007b) of the edge (2007). system according to one of the Claims 8 until 18 , wherein the outer edge portion or the outer radius of the disc structure (4009) at least 3 mm, preferably 4 mm, 4.6 mm or more distance from the second portion (2007b) of the rim (2007).

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