EP4225392A2

EP4225392A2 - Port, flush cap, medical treatment apparatus, and system

Info

Publication number: EP4225392A2
Application number: EP21789665.3A
Authority: EP
Inventors: Juergen Haecker; Burkard KELLER; Winfried Brehm; Oliver Bond; Matthias FEHLER; Markus Then; Martin Lauer
Original assignee: Fresenius Medical Care Deutschland GmbH
Current assignee: Fresenius Medical Care Deutschland GmbH
Priority date: 2020-10-07
Filing date: 2021-10-06
Publication date: 2023-08-16
Also published as: CA3195545A1; EP4225393A1; AU2021357734A1; JP2023544806A; CN116322821A; WO2022074048A3; CN116322820A; MX2023003860A; WO2022074049A9; US20230398273A1; KR20230083332A; US20230405296A1; WO2022074049A1; BR112023006223A2; US20230364408A1; EP4225394A1; TW202220714A; JP2023545745A; CA3194736A1; US20220105335A1

Abstract

The present invention relates to a port (100) for establishing a fluidic connection between at least one fluid line (2002) of a treatment apparatus (2000) associated with the interior (I) of the treatment apparatus (2000) and a connector (4001) of a fluid line (4002) of a fluid-conducting disposable (4000) associated with the exterior (Ä) of the treatment apparatus (2000), the port (100) having at least a first fluid guide (3) and a second fluid guide (5). The first fluid guide (3) has at least a first lumen (31) and a first end opening (32), which are provided to receive and/or guide a first medical fluid and to establish the fluidic connection to the connector (4001). The second fluid guide (5) has at least a second lumen (51) and a second end opening (52). The first end opening (32) of the first fluid guide (3) is, at least in regions, arranged in the second lumen (51) of the second fluid guide (5). The invention further relates to medical treatment apparatus and to a system.

Description

description

Port, rinsing cap, medical treatment device and system

The present invention relates to a port according to claim 1. It also relates to a rinsing cap as disclosed herein, a medical treatment device according to claim 14, and a system according to claim 23.

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 treatment device, or vice versa. In the case of one-way lines, one speaks of disposables.

An object of the present invention is to provide another port suitable for this purpose. A flushing cap is also disclosed. In addition, a further medical-technical treatment device and a further system are to be specified.

The object according to the invention is achieved by a port 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 object according to the invention is also achieved by a medical-technical treatment device having the features of claim 14 and by a system having the features of claim 23 . According to the invention, a port is proposed which is used to establish a fluid connection between at least one fluid line of the medical treatment device, which is assigned to, faces or is included in the interior of the treatment device, and a connector of a fluid line of a disposable that carries fluid when in use. The fluid line does not belong to the treatment device, but rather is associated, 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 substituate 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 the 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, which 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 level. The first fluid guide is therefore further inside the port than the second fluid guide, and in any case the first end opening is further inside the port than the second end opening.

Here, the first end opening of the first fluid guide is arranged, at least in sections, in the second lumen of the second fluid guide. According to the invention, a medical treatment device (also abbreviated below: treatment device) is proposed which has a housing with a fastening section. The attachment section is used to connect the medical treatment device to a port, preferably a port according to the invention, or vice versa.

Optionally, a port can be accommodated in the fastening section of the medical treatment device, in particular a port according to the invention.

The system according to the invention has a medical treatment device according to the invention and a disposable, which in turn has a fluid line and a connector with a connector lumen for fluidically connecting the fluid line to the first lumen of the first fluid line, preferably inside the port.

The present invention also relates to an inserting system with a receiving part, e.g. B. the port mentioned here , and with a part to be plugged in here , e.g. B. the connector referred to herein.

The female part has a preferably raised rim 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 receiving part has a disc structure which is preferably round or has a round edge section with an outer radius which corresponds to a value between 90% and 99.9% of an inner radius of the receiving part and/or at most 1 mm, preferably at most 0.5 mm, particularly preferably 0.1 mm 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 distance to the first section of the edge.

The present invention also relates to a method for disconnecting or separating the rinsing cap from the port or for preparing this disconnection or separation, which can be carried out 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 rinsing 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 pivoting lever as disclosed herein. Embodiments according to the invention can have some, some or all of the following features in any combination, unless this is technically impossible for a person skilled in the art. Advantageous developments of the present invention are each also the subject matter of the dependent claims.

In all statements above or below, the use of the expression "may be" or "may have" etc . synonymous with "is preferably" or "has preferably" etc. to understand and is intended to explain embodiments of 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 included in the present invention, as is the interpretation that a numerical word such as "a" can alternatively be meant as "exactly one", wherever this is technically possible for a person skilled in the art. Both are covered 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 ports according to the invention in its intended use. If an embodiment is mentioned here, it always represents an exemplary embodiment according to the invention

From leadership form that is not to be understood as limiting.

If it is disclosed here that the object according to the invention has one or more features in a specific embodiment, it is also disclosed here in each case 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. as a disclaimer. It is therefore true for each embodiment mentioned herein that the opposite 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 fastening section preferably has a preferably raised edge, which can protrude beyond adjacent housing sections, can be set back relative to these, or can end flush with them. In addition or as an alternative, the second opening is optionally set back relative to the edge or relative to the adjacent housing sections. The latter can prevent the entry 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 the patient, by such liquid being drained downwards past the opening of the port be able . In some embodiments, the port entrance, or the second opening, is set back relative to the attachment section or its edge. The latter can also impede or prevent the ingress of liquid from the outside.

In some embodiments of the port according to the invention, the second end opening of the second fluid guide 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 further inside the treatment device than the second end Öffung is arranged. Here, the outer diameter of the first fluid guide is preferably constant, especially in an area in which the cross-sectional area or

Öffensf surface 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 is created between the first opening of the first fluid guide and the inner wall of the second lumen, which counteracts the formation of liquid bridges between the opening and the inner wall due to the sufficiently large distance created between these two. Droplets hanging between the opening and the inner wall advantageously tear off because of the distances between the opening and the inner wall selected inside the port. 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 apply less force (because of the comparatively small circumferential surface, which also forms the sealing surface) than when the second opening and so that the rinsing cap would have the same diameter as 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 e.g. B. where they are bounding side surfaces (z. B. in a longitudinal section, as shown in Fig. 1 or Fig. 2) parallel and / or at a constant angle to each other.

In some embodiments, the second opening is that portion of the second lumen or fluid conduit in which its bounding side surfaces (e.g., in a longitudinal section as shown in FIG. 1 or FIG. 2) are parallel to one another or stand.

In some embodiments, the second lumen of the second fluid guide has at least one longitudinal section which is not delimited by side walls (ie, e.g. upwards and downwards) which are parallel to one another and/or are at a constant angle to one another. This longitudinal section is in some

Embodiments are 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, which in each case has at least 3 mm long, preferably at least 5 mm long, particularly preferably at least 1 cm long and optionally lies further outside than the first opening, which is or would be limited in a longitudinal section by side walls that are parallel and/or at a constant angle to one another.

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

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

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

In some embodiments, the cross-sectional area of the first lumen is not arranged concentrically to the cross-sectional area of the second lumen in at least one cross-section of the port. 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 evenly spaced from this center line spaced .

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 has at least one opening, e.g. B. a groove which at or is arranged 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 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 increases from a cross-section in which the opening plane of the first end-side opening of the first lumen also lies, in the axial direction up to the start of the opening, e.g. B. to the beginning of the groove, always and / or steadily.

In some embodiments, the inner wall of the first lumen is shaped to converge or widen towards the first opening, at least in sections. The angle can e.g. B. be 2 °.

In some embodiments, the wall or outer wall that 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 tapered only 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°. The lead-in bevel created in this way can help to prevent unwanted contact between the end faces.

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

In some embodiments, a radially outer boundary or outer wall of the first fluid guide is spaced from each radially inner surface of the side wall or inner wall of the second lumen over the entire 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 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 always and /or steadily from . This predetermined distance is preferably at least 10 mm, particularly preferably at least 20 mm or at least 30 mm.

In some embodiments of the port according to the invention, an edge or a wall of the second end opening has at least one fillet or a negative or concave rounding of a thickness or thickness of the edge or the wall. They form defined entry points for air which, when the rinsing cap is opened, which closes this second, end-side opening of the second lumen when the ports are 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 area of the rinsing cap before opening the rinsing cap, the groove(s) prevent a liquid cylinder from forming around the rinsing cap. This has the advantage that when the rinsing cap is pulled out, a liquid cylinder does not implode, which could lead to the formation of droplets, dispersion and aerosol formation and thus carry residual liquid particles into the interior of the port or out of the port.

In some embodiments, the port also has a leakage sensor, preferably a conductivity sensor. The leakage sensor preferably protrudes into the second lumen, i. H . 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, stud, 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 area. 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 in FIG. 1 or the fig. 2 correspond to or are parallel thereto.

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 in the lower region. 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. The tip of this shape is directed towards the inside of the port.

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

In some embodiments, the treatment device has a pivoted lever. This is arranged for its pivoting about a pivot axis, preferably running perpendicularly to the housing surface, with 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. In order to close the second lumen, the pivoting lever is rotated or pivoted until the rinsing cap, which is accommodated in the receiving section, stands in front of the second lumen of the second fluid guide. In some embodiments, the optional receiving portion has a detachable flushing cap 14, particularly as described herein.

The optional stop is intended to temporarily prevent an axial separating movement, which would lead to the disconnection of the connector of the disposable from the fastening section, e.g. 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. a stop of the pivoting lever arranged in front of the connector. In some embodiments, a sensor is provided and correspondingly connected to a signal, e.g. B. connected to the control device of the treatment device, which detects the grip position or predetermined positions that the grip occupies or can occupy. A successful or sufficient connection of the disposable in the port can thus be determined, monitored, etc. as well as optional its disconnection . Alarms , displays, notices , etc . can be provided by the signal coming from this sensor, as well as optional interventions f fe in the control of the treatment device, which z. B. can be configured to block or interrupt predetermined treatment options or functions of the treatment device if the signal does not or does correspond to certain specifications.

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

In some embodiments, the flushing cap also 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 rinsing cap has a wedge-shaped or triangular section in a longitudinal section of the rinsing 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 of the medical treatment device according to the invention, the pivoting lever is arranged for pivoting about the pivoting 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 of the system, the flushing 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 corresponds.

In some embodiments of the treatment device, the pivoted lever has a depression or groove. It is designed for inserting a section 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. at a grip f piece thereof, by means of Indentation in which the edge of the terminal plate or disc is inserted, not only does the swivel lever release the port, but the connector is also pulled off the port at the same time.

In some embodiments of the treatment device, the port is accommodated in its attachment section 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 footprint of the medical treatment device.

In some embodiments, the medical treatment device includes a displacement device, by means of which the pivoted lever can be displaced or guided in a translatory manner along the pivot axis. The displacement device can be part of the pivoting lever. Preferably, the pivoting lever can 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 serves to move the receiving section in a translatory manner and/or to pretension 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 treatment device, the rinsing cap is dimensioned such that the first indentation or groove and the second indentation or groove of the rinsing cap are in fluid communication with one another when the rinsing cap is inserted into the port. Fluids can thereby preferably flow in the axial direction on the outside of the rinsing cap along 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 treatment device, or to the front end of the disposable or the connector.

In some embodiments, the rib structure has adjacent ribs which have or are located between them. limit arranged wells laterally. Here, the distance, which the cutouts 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% %, particularly 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 disc 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 cause a non-gastight connection between the connector and the second opening receiving it. 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. The ribs can rather such liquid residues, if necessary. also favored by capillary forces, absorb between them, 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 favors the air distribution inside the port and leads to complete or faster drying of residual liquid, which counteracts the spread of germs through liquid during treatment.

In some embodiments, the connector has a connector with a lumen through which a flow 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 flow can occur 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 sleeve with a free connection opening, with the connector lumen surrounded by a wall ending in an opening inside the contact-protection sleeve. In this case, the free connection opening and the opening in the wall preferably have a minimum distance of at least 10 mm from one another.

In some embodiments, the connector has a drip disc. The drip disc is arranged between the disc structure and the rib structure or between the disc structure and the 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 for receiving and/or conducting, guiding and the like of fluids. Examples these 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 Discharge of a medicinal fluid from an outlet opening of the first fluid guide (ie out of the port), e.g. B. into the environment, into an exterior, into the associated disposable, etc.

The term "medicinal fluid" as used herein, in certain embodiments of the present invention, generally refers to liquids such as dialysate, substitute liquid, drug solutions, priming and/or rinsing and/or sterilization fluids and the like as well Gases, eg sterile air, as well as any combinations or mixtures thereof 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 substitute fluid, in some embodiments of the present invention, substitute fluid produced on-line by a treatment device.

A flushing cap, as used in certain embodiments of the present invention, refers to a closure device which is designed and/or provided 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 rinsing cap can seal the port according to the invention in a fluid-tight manner against the outside. 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 rinsing cap is intended to enable or promote cleaning of the port.

The rinsing cap can be designed so that it can pivot and/or slide automatically or in an automated manner.

In certain embodiments of the present invention, the connector or its end section has or consists of, for example, PEEK (polyetheretherketone) or PEEK with an admixture of PTFE (polyolefinduorethylene). 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 according to the invention has a hydrophilic coating at least in some sections or is made—in these sections—of a hydrophilic material.

To a drop flight z. B. To minimize the risk of the rinsing cap being moved away or pivoted, 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 according to the invention is part of a machine-side substitute system of the medical treatment device.

In certain embodiments, the port on the medical 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 in such a way that in at least one position (rinsing position, connection position, etc.) its first lumen has an inclination to the horizontal as described above, with the free end of the first lumen being lower at this inclination than other sections hereof. Such a tendency, particularly 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 discharge line. This can be discharged from the port via the drain or waste line with almost no residue.

The treatment device according to the invention is in certain embodiments 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. designed .

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

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 suck in .

In certain embodiments, the device for introducing air comprises means for generating sterile air or sterile compressed air from z. 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 to remove a large part of the liquid from the port in advance, 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 does not have a spring element, e.g. B. the first fluid guide in an axial To be able to move 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 of at least or exactly two different lengths.

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 into the second lumen of the port when the connector is connected to the medical-technical treatment device, others however not.

In some embodiments, some or all of the ribs, in particular the rib structure, have at least one non-rounded, sharp-edged or right-angled longitudinal boundary or edge in cross section, in particular in the transition to adjacent depressions, at least over a section of the rib in question. The longitudinal boundary or edge can z. B. have a radius of at most 0.1 mm, preferably at most 0.05 mm, which can result in the sharp-edgedness or which causes it. In some embodiments, the connector has a drip disc and a disc structure. In this case, ribs are arranged between the drip disc and the disc structure, which 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 contact protection sleeve, preferably at least 18, particularly preferably at least or exactly 20.

In some embodiments, the disposable has a closing plate or disk at the end which is not circular, e.g. B. end .

In certain embodiments, the rim delimiting the first opening is spaced apart 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 surrounding the connection opening protrudes through the inner wall of the second end opening or the opening adjoining it during insertion of the connector into the second lumen of the port second lumen is guided so that it cannot come into contact with the first fluid guide, in particular not with its end-side opening and/or the end-side delimitation of the end-side 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 contact protection sleeve and/or the distance between the free connecting opening and the opening of the connector lumen are set 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 in 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 limitation.

In some embodiments, the system further comprises a medical treatment device, which has a housing with an attachment section for connecting the medical treatment device to the port, and/or the port, the attachment section having an edge which optionally extends over adjacent Housing sections protrudes and / or in relation to these is raised.

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 pivoting lever into a second pivoting position of the pivoting 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 sections or parts of the pivoting lever that are accessible from the outside (such as grips, stop, etc.) are dimensioned so large that they do not penetrate into the interior of the protective cover, or not up to the opening present therein opening of the connector, can protrude or be pushed in. This geometric coordination of pivoted lever and contact protection sleeve with one another can advantageously prevent at least the connector from being accidentally touched by non-sterile sections of the pivoted lever.

In some embodiments, the outer edge section or the outer radius of the disc structure is at least 3 mm, preferably 4 mm, 4, 6 mm or more from the second section of the edge. 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 strength of the pane structure is or can be inserted into the edge.

In some embodiments, the disposable part is a flexible fluid line, preferably also designed or provided as a disposable or single-use product, and/or is directly or indirectly connected thereto.

In some embodiments, the connector can be plugged into z. B. a port is provided, wherein the connector may be protruding and/or provided to be grasped by hand for its insertion.

In some embodiments, all or some of the ribs of the rib structure, or their longitudinal extensions, run in a longitudinal direction of the connector or parallel to a flow direction of the connector.

In some embodiments, all or some of the ribs of the rib structure do not run in a circumferential direction of the connector.

In some embodiments, the disposable or its connector does not have or does not consist of a drip protection, which has or consists of concentric rings or grooves. In some embodiments, the disposable is not part of a blood cassette and/or not part of a treatment device.

In some embodiments, the wall surrounding the connector lumen is spaced apart from an inner wall of the protective sleeve, preferably by at least 3 mm or more.

In some embodiments, the connector or the, or a, wall which surrounds the connector lumen is not movable or displaceable within the disposable, or in relation to this, is provided in the disposable or in the connector.

In some embodiments, the connector or the, or a, wall which surrounds the connector lumen is not provided to be movable or displaceable within a treatment cassette, for example a blood treatment cassette.

In some embodiments, the pivoting lever is not intended to be rigidly connected to the flushing cap.

In some embodiments, the walls that delimit the first and/or the second lumen do not have spherical or differently shaped local thickenings, widenings or bulges of any kind.

Some or all of the 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 guaranteed 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 pl - 10 pl) is left in the port.

A further advantage of the present invention can be that the germ transfer by aerosols to the opening of the first fluid guide, which is carried out by means of dynamic negative and positive pressure conditions with fast movements during the connection and disconnection of the disposable and rinsing cap, even with very little residue amounts of liquid can occur, is reduced or prevented by means of the present invention.

By avoiding contact between inner and first and outer resp. Second fluid guidance advantageously prevents the formation of so-called "liquid bridges". This also contributes to the reduction or avoidance of germ transfer into the bloodstream and thus to increased patient safety. The conductivity sensor can be used to detect micro-leakage within the port during treatment or

Residual liquid can be detected after emptying.

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 bloodstream of the patient.

With the port according to the invention, it can advantageously be possible to ensure sterility even in the humid environment in or on the connector, in which there is usually a risk of germ accumulation, and thus to minimize or completely eliminate a risk of contamination for users and/or patients close .

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 in handling residual liquid in the port prior to disconnecting the disposable, which is collected and directed to the drain or waste line, resulting in port emptying optimization.

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 port lumen closure, 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. Due to the larger gap between the machine front and disposable or However, the liquid can drain off the rinsing cap in the lower area and does not get into the interior of the port. A sealing closure to the front of the machine, which during connection and disconnection processes due to the pressure equalization for the drip or Aerosol formation can thus advantageously be avoided.

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

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

Fig. 1 schematically shows a port according to the invention for connecting a disposable to a medical treatment device in fluid communication;

Fig. 2 shows a section of FIG. 1 in magnification;

Fig. 3 shows the port of FIG. 1 in a longitudinal section; Fig. 4 shows a detail of the front or side view of a medical treatment device with a view of a housing section thereof;

Fig. 5 shows the connector of a disposable that is only shown in sections;

Fig. 6 shows the connector of FIG. 5 in a partial sectional view;

Fig. 7 shows the connection state between port and connector in a simplified longitudinal section;

Fig. Fig. 8 shows two ports 12 each received in a mounting portion of a housing; and

Fig. FIG. 9 shows, in a schematically simplified manner, a fluid line structure of a medical treatment device according to the invention.

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

The port 100 has a first fluid guide 3 with at least one first lumen 31 and a first end opening 32 . 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 end opening 32 . 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 is shown in the embodiment of FIG. 1 as a transition from an exterior Ä of FIG. 1 only indicated medical treatment device 2000 to an interior I of the port 100 or the medical treatment device 2000 understood or referred to.

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

The second end opening 52, which can be an opening plane, is provided in order to insert through it a section of a connector 4001 (see FIG. 5) of a disposable 4000 into the interior of the port 100, with the aim of being between the first Fluid guide 3 and a connector lumen 4004, see FIG. 6 to establish a fluid connection . The second opening at the end should preferably guide the connector 4001 in a stable position.

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 that is assigned to the connector 4001 of the exterior Ä of the treatment device 2000 4000 on the other hand. the Connection preferably takes place in an end section 1 of the port 100 .

Fig. 1 shows an attachment portion 2003 for attaching the port 100 to the port 100 shown in FIG. 1 only indicated medical treatment device 2000 . The port 100 leads in FIG. 1 by a housing section of a housing 2001 of the medical treatment device 2000 which is delimited by adjacent housing sections 2005 .

Fig. 1 shows the port 100 in a state where it is not connected to a connector 4001 . It is closed with a flushing cap 200 . Fig. 1 thus shows the port 100 in a “flushing state” or “sealed 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 flushing 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 FIG. 4). The edge 2007 in turn has a first portion 2007a and a second portion 2007b, which are discussed in more detail with reference to FIG.

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 beautiful. Its function is explained below with reference to the illustration in FIG.

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.

FIG. 1 also shows a receiving section 2015 as part of a pivoted lever, which is denoted by reference numeral 2011 in FIG. The receiving section 2015 of the pivoting lever, which is otherwise not shown in FIG.

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 (ie to the left in FIG. 1) 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 in Fig. 1) are oriented in a direction along the center line M or parallel thereto (left-right in Fig. 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 that is smaller than any other cross-sectional area of the second lumen 51 bounded by the sidewalls of the lumen 51, which further faces the interior I of the second lumen 51 than the first cross-sectional area, as can be seen further to the right in FIG. 1 from at least a region just before the first end-side opening 32 . As a result, the second lumen 51 widens at least in sections in the direction of the interior I.

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

An opening of a sterile air supply line 47, which z. B. the medical-technical treatment device 2000 can be provided. It is preferably at one of the second end-side opening 52 opposite end of the second Lumens 51, preferably on an upper side wall of 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-side 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 the second lumen has in at least one cross-section radially expanded and / or in which the opening of the sterile air supply line 47 is always and / or steadily.

As can be seen from FIG. 1 , the edge which 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 is due to the widening of the second lumen 51 inwards, ie to the right. 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 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 opening 31 of the first fluid guide 3 and thus ultimately serves to protect of the patient against germs transferred in this way.

Fig. 2 shows a section of Fig. 1 in enlargement.

2 shows that the second opening 52 may be located in or close off a longitudinal section (in the axial direction) in which the peripheral surfaces forming the second opening 52 are parallel to one another. Sections located further to the interior of the port 100 and adjoining the second opening 52 contribute to the above-mentioned Expansion of the second lumen 51 at.

The circumferential, first groove 204, which is 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 discharged. down away. The flow path delineated in this way guides 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 peripheral second groove 208 results from the special design of the front edge of the flushing cap 200 .

Fig. 3 shows the port 100 of FIG. 1 in a perspective view from the right. 1 in a longitudinal section looking into the cut-out port 100 and the end face 205 of the flushing cap 200 and its edge 207.

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

While there can be cross-sections of the second lumen 51 which have a circular cross-sectional area, as can be seen from the reference cross-section QRZU, 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. These include the cross sections shown in FIG. 3 are each to the right of the reference cross section QR, ie facing an interior I.

If one considers, for example, a cross section in which the first end opening 32 is also located, this cross section in the illustration in FIG. 3 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 can be seen in FIG. 3 extends in a top-bottom direction.

Fig. 3 further shows that in at least one cross-section of the port 100, the cross-sectional area of the first lumen 31 is not concentric with the cross-sectional area of the second lumen 51 is arranged, which is already due to the fact that the second lumen 51 is itself not cylindrical in a region or cross-section in which it has the first fluid guide 3 or the first lumen 31 .

Furthermore, Fig. 3 shows 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 a cross-section further inwards, i.e. to the right, can be seen.

The at least one, optional opening 54 of the port 100 already mentioned in relation to FIG. 1 expands 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 over the entire circumference, preferably over a part of the circumference lying below the first fluid guide in use, i.e. below the first in FIG fluid flow 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 can be seen in FIG. 3, the opening 54 is preferably located at that end of the second lumen 51 which is opposite the second end opening 52 thereof.

The opening 54 can be connected to a drain or discharge line 153 via a line (not shown). (FIG. 9) which can be in fluid communication with the lumen 51 via a connection 48 shown in FIG.

The rim 207 may be configured to be no less than 90° (or a range between 80° and 100°) from an axial centerline of the irrigation cap or axial centerline, as shown in Figure 3 in the inserted state of the irrigation cap 200 and/or in the relaxed state Port 100 m to stand off .

FIG. 4 shows a detail of the front or side view of a medical-technical 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 according to the invention.

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

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 plane of the drawing and is also covered by a connector 4001 shown in cross section of a disposable that is otherwise not shown.

What can be seen, however, is the connector lumen 4004, which is centrally located here by way of example, with a center point C, as well as the cover plate of an in Contact protection sleeve 4017 shown in the following figures. The height of the connector 4001, in which this for the representation of FIG. 4 is cut , in Fig . 5 indicated.

The optional , to Fig . 1 already mentioned edge 2007, which delimits the fastening section 2003 from adjacent housing sections 2005 all the way round or only in sections and optionally protrudes beyond this in a direction out of the plane of the drawing, is shown in FIG. 4 to recognize .

The edge 2007 has in Fig. 4 shows the first section 2007a by way of example, which has the course of a part s of a ring, with a center point C, which corresponds to the center of the connector lumen 4004 of the connector 4001 shown in section only in sections thereof.

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 does not do so to a large extent. Together with the first section 2007a, the second section 2007b forms the peripheral edge 2007, which is only optional. In the area of the dent or indentation 2009, the lower edge of the only optional peripheral edge 2007, ie the second section 2007b, is further away from the center C than the upper edge of the only optional peripheral edge 2007, ie the first section 2007a. It can be seen that the connector 4001 and above all its protective cover 4017, see also FIG. 5 , on his resp . its outer wall carries a plurality of ribs 4003a and 4003b. Their radially outer dimensions allow the connector 4001 to be pushed into the second lumen 51 with the desired fit.

The ones shown in Fig. The disk structure 4009 shown in FIG. 5 serves as an example of an optional flange for achieving a form 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.

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

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

The connector 4001 optionally has 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 opening 52 of the second fluid guide 5 .

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

The indentations 4007a, 4007b make up between 5% and 15%, preferably between 10% and 12% of the cross section in a cross section of the connector 4001 (e.g. measured from the base of the ribs to the top of the ribs, i.e. in the radial direction). surface of the connector 4001 in this cross-section. The cross-sectional area of the connector has z in this cross-section. B. an extension 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 Fig. 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 is 90% to 99.9% of the inner radius of the first portion 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 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 contact protection sleeve 4017 ending with the free or end connection opening 4019 . The connector lumen 4004 , surrounded by a wall 4021 , opens into an opening 4023 inside the contact protection sleeve 4017 . 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 end-side connecting opening 4019, the connector 4001 can have a Have 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 result in the connector 4001 being pulled out when the handle 2013 of the pivoted lever 4011 is pulled out, see FIG. 8 , facilitate .

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

Fig. 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 means of arrows), this is not in the plane of the drawing due to the incision Ribs 4003a, 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 drain disk 4025 of the connector 4001 and essentially under the disk structure 4009, which offers a lower flow resistance between its radial edge and the edge at the bottom than at the top because the gap 12 it has at the top of the first portion 2007a of the rim 2007 is intentionally smaller held than the gap it has down to the second section 2007b. Liquid that hits the port from the outside, e.g. B. Liquid spilled by staff or the patient therefore does not reach the entry area of the port 100 located behind the disk structure 4009 , but rather flows further out and down the disk structure 4009 . The same advantageous effect can be achieved with a suitably selected geometry for the port and rinsing cap.

Fig. 8 shows two ports 100 each received in a mounting portion of a housing 2001 .

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 (not shown) is pushed into the port 100 shown at the top left. The associated pivoting lever 2011 is pulled so far out of the housing 2001 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 the direction along the pivot axis S or parallel to this . It prevents the connector 4001 from moving outwards 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 pivoting lever 2011 can be pulled out by a few centimeters by means of the gripping section 2013 along the pivoting axis S from the housing 2001 and, after this pulling out, for example counterclockwise, rotated or pivoted. 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 is pulled out of the port 100 and thus separated from the medical treatment device 2000 , the second opening 52 of the port 100 that is now exposed can be closed by means of the rinsing cap 200 . For this purpose, the pivoting lever 2011 is turned clockwise until the flushing cap 200 received in the receiving 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 application of force 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 a closing plate or disk 4027 at the end of the connector 4001 . If the swivel lever 2011 is pulled, e .g . B. to get him out of a connection position, in which the port 100 is connected to the disposable 4000, to pivot 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.

Fig. 9 shows a process diagram of a medical treatment device 2000 according to the invention, 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 sign Y) as shown in FIG. 9 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 can be used with the treatment device 2000 or 2000 according to the invention. with one of these z. B. included control device 150 connected.

The blood circuit 300 comprises (or is connected to) an arterial patient tube clamp 302 and an arterial connection needle of an arterial segment or an arterial patient line, blood sampling line or first line 301 . The blood circuit 300 further includes (or is connected to) a venous patient tubing 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) (substituate). A substituate line 105 may be fluidly connected to the feed line 104 . By means of the substituate pump 111, substituate can be added 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 in line sections, for example in 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.

The blood filter 303 has the blood chamber 303 b 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 shown in Fig. 9 to the left of the membrane 303c.

The arrangement of Figure 9 includes an optional detector 315 for detecting air and/or blood. The arrangement of Fig. 9 also includes one or two pressure sensors PSI (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-hemof ilter")) at the in Fig. 9 Further pressure sensors can be provided, e.g. the pressure sensor PS3 downstream of the venous bladder chamber 329.

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

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

An addition point 325 for heparin can optionally be provided.

A mixing device 163 is shown on the left in FIG. 9, which from the containers A (for A concentrate via the concentrate supply 166) and B (for B concentrate via the concentrate supply 168) produces a predetermined mixture for the respective solution for use by the treatment device 2000 provides . The solution contains, in z. B. the heater 16 heated water (online, e.g. B. 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 Fig. 9 an outflow 153 for the ef fluent . An optional heat exchanger 157 and a first flow pump 159 suitable for degassing complete the arrangement shown.

Yet 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 outflow 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.

The ones shown in Fig. The exemplary arrangement shown in FIG. 9 has the control or regulating device 150 . It can be used with any of the components mentioned herein - at any rate or in particular with the blood pump 101 - in a wired or wireless signal connection for controlling or regulating the treatment device 2000 .

The sodium content of the dialysis fluid can be varied within certain limits by means of the device for online mixing, controlled by the control device 150 . For this purpose, in particular the measured values determined by means of conductivity sensors 163a, 163b can be included. If an adjustment of the sodium content of the dialysis fluid (sodium concentration) or of the substitute is necessary 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. closes . A second, optional flow pump 169 is e.g. 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. closes .

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. those with reference number 169 can also be provided.

A number of optional valves are shown in Fig. 9 each marked with V . Bypass valves are denoted by VB.

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

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

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

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

The present invention is not limited to the embodiment described above, which is for illustrative purposes only.

The ones shown in Fig. 9 arrowheads shown in Fig. 9 generally indicate the flow direction in each case. Reference List

100 ports

1 end section

3 first fluid guide (inside)

5 second fluid guide (outside)

12 heater

31 first lumen

32 first end opening

47 sterile air supply line

48 Connection for drain line or waste line

51 second lumen

52 second end opening

52a fillet

54 opening, e.g. B. groove

57 deepening

61 heating device

63 mixing device

Ä exterior

C midpoint

H height

Q transverse direction

QR reference cross-section

I interior

M center line

S pivot axis

2000 medical technology treatment device

2001 housing

2002 fluid line 2003 attachment section

2005 adjacent housing sections

2007 edge

2007a first section

2007b second section

2009 indentation

2011 swing lever

2013 grip section

2015 Recording from section

2017 attack

2031 Leakage sensor

2041 reset element

4000 disposables

4001 connector

4002 fluid line

4003 rib structure

4003a rib

4003b rib

4003c rib

4004 connector lumens

4005 ribs

4007a deepening

4007b deepening

4009 disk structure

4015 connector

4017 touch protection

4019 connection hole

4021 wall

4023 opening

4025 Drip disc

4027 end plate or disc 101 blood pump

102 Dialysate drain line

104 Dialyzed liquid inlet line

105 Substituate line 107 Predilution valve

107a line belonging to the predilution valve

109 post dilution valve

109a line belonging to the post-dilution valve

111 substituate pump 131 ultrafiltration pump

150 controller

153 drain or waste pipe

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

200 flushing cap 202 outer edge of flushing cap

204 first groove

205 face of flushing cap

207 edge of the face 208 second groove

300 extracorporeal blood circuit

301 first line (arterial line section)

302 (first) hose clamp

303 blood filter or dialyzer

303a Dialysis fluid s combs

303b blood chamber

303c semi-permeable membrane

305 second line (venous line section)

306 (second) hose clamp

315 detector

317 single -Ne noble -chamber

318 ventilation device

319 detector

325 point of addition for heparin

329 venous blood chamber (optional)

fl filters

F2 filters

A container

B container

D predetermined duration

P pressure measuring points

PSI 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

64 claims

1. 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 a connector (4001) of the exterior (Ä) of the treatment device (2000) associated fluid line (4002) of a disposable (4000), the port (100) having at least: a first fluid line (3) with at least one first lumen (31) and a first end opening (32), provided for receiving and/or guiding a medical fluid and/or for establishing the fluid connection with the connector (4001); and a second fluid guide (5) with at least one second lumen (51) and a second end opening (52), wherein 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.

2. Port (100) according to claim 1, wherein the second end opening (52) of the second fluid guide (5) 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, wherein the outer diameter of the first fluid guide (3) 65 is preferably constant, in particular in a region in which the cross-sectional area of the second lumen (51) increases axially. Port (100) according to any one of the preceding claims, wherein the second lumen (51) has a first cross-sectional area defined by side walls of this lumen (51) which is smaller than any other cross-sectional area defined by the side walls (5) of the second lumen (51). of the second lumen (51) which is further towards the interior (I) of the port (100) or the blood treatment device (2000) than the first cross-sectional area. Port (100) according to one of the preceding claims, wherein the second lumen (51) does not have a circular cross-sectional area in at least one cross-section. A port (100) according to any one of the preceding claims, wherein the first lumen (31) terminates in a funnel or divergent shape in the first end opening (32). Port (100) according to any one of the preceding claims, wherein the second lumen (51) has at least one cross-sectional area which in its transverse direction (Q) has a smaller extent than in its height (H). Port (100) according to any one of the preceding claims, wherein a radially outer boundary of the first fluid guide (3) over the entire length of the first 66

Fluid guide (3), or at least in sections, at least 5 mm, preferably at least 8 mm, is spaced from a radially inner surface of the side wall of the second lumen (51). Port (100) according to one of the preceding claims, further comprising a leakage sensor (2031), preferably a conductivity sensor, which preferably projects into the second lumen (51), and which is preferably a pin, pin or ring or has. Port (100) according to any one of the preceding claims, wherein the second lumen (51), in particular an inner surface of the side wall of the second lumen (51), a depression (57) which in at least one section, which is neither a longitudinal section nor parallel to a cross-section through the second lumen (51), has a portion with a triangular or wedge-shaped shape. Medical-technical treatment device (2000), comprising a housing (2001) with a fastening section (2003) for connecting the medical-technical treatment device (2000) to a port (100) according to one of the preceding claims, wherein the fastening section (2003), preferably via adjacent housing sections ( 2005) above, a preferably raised edge (2007). Medical treatment device (2000) according to claim 10, wherein the edge (2007) in a first 67

Section (2007a) is annular at or below an inner radius, a second section (2007b) of the rim (2007) not being part of the inner radius annular shape formed by the first section (2007a). Medical-technical treatment device (2000) according to one of Claims 10 to 11, with a pivoting lever (2011), arranged for its pivoting about a pivoting axis (S), the pivoting lever (2011) having:

- A receiving section (2015) for releasably receiving a rinsing cap (200) for temporarily closing the second lumen (51) of the second fluid guide (5) by or after pivoting the pivoting lever (2011) into a first pivoting position of the pivoting lever (2011); and or

- a stop (2017) for temporarily preventing an axial separating movement for separating the connector (4001) of the disposable (4000) from the fastening section (2003) by or after pivoting the pivoting lever (2011) into a second pivoting position of the pivoting lever (2011), wherein in Recording section (2015) detachable one

rinsing cap (200), for temporarily closing an opening (52) of a port (100), the port (100) for establishing a fluid connection between at least one fluid line (2002 ) the medical 68

Treatment device (2000) and a connector (4001) of a fluid line (4002) assigned to the exterior (Ä) of the treatment device (2000) of a fluid-carrying disposable (4000), wherein the rinsing cap (200) is used on the inside of the rinsing cap (200). (I) has the end face (205) facing the medical treatment device (2000) which has an axially and/or radially raised edge (207) on its circumference. Medical-technical treatment device (2000) according to claim 12, wherein the raised edge (207) has a wedge-shaped or triangular section (207a) in a longitudinal section of the rinsing cap (200). Medical-technical treatment device (2000) according to any one of claims 11 to 13, wherein the pivoting lever (2011) has a depression or groove for inserting a section of the edge of an end-side closing plate or disc (4027) of the connector (4001) for its removal from the port (100) . Medical-technical treatment device (2000) according to one of claims 10 to 14, wherein the port (100) is accommodated in the fastening section (2003) in such a way that a center line (M) of the first fluid guide (3) or of the first lumen (31) is 4° or more to one

Is inclined on footprint of the medical treatment device (2000). Medical-technical treatment device (2000) according to any one of claims 11 to 15, comprising a displacement device, by means of which the Pivoting lever (2011) is translationally displaceable or guidable along the pivot axis (S). Medical-technical treatment device (2000) according to one of Claims 10 to 16, having a restoring element (2041) for the translational movement of the receiving section (2015) and a damping device for damping a translational movement caused by the restoring element (2041). System with a medical-technical treatment device (2000) according to one of Claims 10 to 17 and with 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) with having the first lumen (31) of the first fluid guide (3) of the port (100).