Disposable, and medical treatment device

Abstract

The present invention relates to a disposable which has a fluid line (4002) and a connector (4001) for fluidically connecting the fluid line (4002), for example to a first lumen (31) of a first fluid guide (3) of a port (100) of a medical treatment device (2000), wherein the connector (4001) has a connector lumen (4004) which is at least partially surrounded or formed by a wall (4021), and has a contact protection casing (4017) which has a connection opening (4019). The connector lumen (4004) opens into or ends in an opening (4023) in the interior of the contact protection casing (4017). The connector (4001) also has a contact protection sleeve (4031) which is arranged within the contact protection casing (4017) so as to be movable along the wall (4021) of the connector lumen (4004) or relative to the wall (4021).

Description

[0001] Description

[0002] Disposable and medical treatment device

[0003] The present invention relates to a disposable according to claim 1 and to a medical treatment device with a disposable according to claim 9 or according to the respective preambles or generic terms of these claims.

[0004] Medical treatment devices typically have one or more ports. Lines are connected to these ports to convey fluids from the interior of the medical treatment device, or vice versa. Single-use lines are referred to as disposables or parts of disposables.

[0005] An object of the present invention is to provide a further disposable and a medical treatment device with a disposable suitable for this purpose.

[0006] The object of the invention is achieved by a disposable having the features of claim 1 and by a medical treatment device having the features of claim 9.

[0007] According to the invention, a disposable is proposed which has a fluid line and a connector for fluidically connecting the fluid line, for example to a first lumen of a first fluid guide of a port of a medical treatment device. In this case, a connector lumen is at least partially surrounded or formed by the connector or a wall. The connector further has a contact protection sleeve which has a connection opening. In the interior of the contact protection sleeve, the connector lumen opens or ends in an opening. The connector further has a contact protection sleeve which is arranged along the wall of the connector lumen, or relative to the wall, preferably along the outer circumference or the outer side of the wall, displaceably within the contact protection sleeve.

[0008] According to the invention, a medical treatment device with a disposable is proposed which is used to establish a fluid connection between at least one fluid line of the medical treatment device (herein also briefly: treatment device), which is assigned to, faces or is included in the interior of the medical treatment device or the disposable, and a connector of a fluid line of the disposable which carries fluid during use. The connector is provided and / or suitable for connecting the fluid line of the medical treatment device to the fluid line of the disposable or for contributing to the connection of these two. The disposable or its fluid line is not part of the medical treatment device, but is assigned to, faces or is included in the exterior of the medical treatment device.The fluid line of the disposable can be, for example, a hose set or a part thereof, a substitution line or the like.

[0009] The port disclosed herein has, mostly in a

[0010] End section thereof, a first fluid guide, which is or comprises a first lumen through which flow can flow, e.g. in the longitudinal direction thereof, with a first end opening or opening plane. The first fluid guide is provided for receiving and / or guiding a medical fluid and / or for establishing the fluid connection with the connector.

[0011] The port further comprises a second fluid guide, which is optionally provided radially further outward (relative to the port) relative to the first fluid guide and / or optionally surrounds the first fluid guide at least along a section in the longitudinal direction of the first fluid guide. The second fluid guide comprises at least a second lumen and a second end opening or opening plane. The first fluid guide is thus preferably located at least in sections within the second.

[0012] The first fluid guide is optionally located further inside (e.g. in radial direction) in the port than the second fluid guide, optionally the first end opening is located further inside the port than the second end opening.

[0013] In this case, the first end opening of the first fluid guide is optionally arranged, at least in sections, in the second lumen of the second fluid guide.

[0014] A protective tube is arranged between a wall forming the first fluid guide or its lumen and a wall forming or delimiting the second fluid guide or its lumen.

[0015] The disclosed system comprises a medical treatment device according to the invention, further comprising a disposable having a connector which is provided for its connection to the port.

[0016] Embodiments of the invention may, based on any of the independent claims, comprise one, some, or all of the above or following features. The features mentioned herein may, in any combination, be the subject of embodiments of the invention based on any of the independent claims, provided that a person skilled in the art does not recognize a specific combination as technically impossible.

[0017] The disposable discussed herein is the subject of the present invention and is therefore in accordance with the invention. The medical treatment device discussed herein is the subject of the present invention and is therefore in accordance with the invention. The system and the port discussed herein, however, are not the subject of the present invention and are therefore not in accordance with the invention.

[0018] In all the above or following statements, the use of the expression "may be" or "may have" etc. is to be understood as synonymous with "is preferably" or "preferably has" etc. and is intended to explain embodiments of the invention.

[0019] Whenever numerical words are mentioned herein, the person skilled in the art will understand this as indicating a numerical lower limit. Unless this leads to a contradiction recognizable to the person skilled in the art, the person skilled in the art will therefore always read the reference to "a" or "an" as "at least one" or "at least one". 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 recognizably technically possible for the person skilled in the art. Both are encompassed by the present invention and apply to all numerical words used herein.

[0020] Whenever spatial references such as "above", "below", "upper" or "lower" are mentioned herein, the person skilled in the art will, in case of doubt, understand these as a spatial indication with reference to the orientation in the figures attached here and / or the arrangement of the disposable according to the invention in its intended use.

[0021] Advantageous further developments of the present invention are the subject of subclaims and embodiments.

[0022] Whenever an embodiment is mentioned herein, it is an exemplary embodiment of the invention based on one of the independent claims, which is not to be understood as limiting.

[0023] If it is disclosed herein that the subject matter according to the invention has one or more features in a specific embodiment, it is also disclosed herein that the subject matter according to the invention expressly does not have precisely this or these features in other, likewise inventive embodiments, e.g. in the sense of a disclaimer. For each embodiment mentioned herein, it therefore applies that the opposite embodiment, for example formulated as a negation, is also disclosed. Embodiments as disclosed herein further develop the invention as defined in each case by the independent claims.

[0024] The term "fluid guide," as used herein, generally refers, in certain embodiments, to a physical arrangement of elements intended for receiving and / or conducting, guiding, and the like, fluids. Examples include pipes, hoses, channels, lines, chambers, fluid guidance devices, etc.

[0025] In certain embodiments, the first fluid guide is provided for discharging or discharging a medical fluid from an outlet opening of the first fluid guide (i.e., from the port), e.g., into the environment, into an exterior, into the connected disposable, etc.

[0026] The term "medical fluid" as used herein, in certain embodiments, generally refers to liquids such as dialysate, substituate fluid, drug solutions, priming and / or rinsing and / or sterilization fluids, and the like, as well as gases, e.g., sterile air, as well as any combinations or mixtures thereof and with the same. In certain embodiments, the medical fluid is suitable and / or intended or intended for extracorporeal blood treatment.

[0027] In certain embodiments, the medical fluid is substitute fluid; in some embodiments of the medical treatment device, it is substitute fluid produced online. In some embodiments of the port, the first end opening of the first fluid guide is arranged radially within the protective tube or its lumen.

[0028] In some embodiments, the protective tube widens in a funnel-shaped or diverging manner, preferably towards the interior of the port or treatment device.

[0029] In some embodiments, the protective tube is spaced apart from the inner wall of the second lumen (or the inner side of the wall forming the second lumen) and / or the outer wall of the first lumen (or the outer side of the wall forming the first lumen) - e.g. in at least one or in each longitudinal section (such as each of Fig. 1) thereof.

[0030] In some embodiments, the protective tube comprises at least one electrically conductive material, e.g. in the form of a metal coating or the like, or it consists thereof, e.g. of metal, etc.

[0031] In some embodiments, the end of the protective tube facing the exterior of the treatment device or port is spaced along the entire circumference of that end from the housing radially surrounding it.

[0032] In some embodiments, the port includes a first leakage sensor, preferably a conductivity sensor.

[0033] The first leakage sensor preferably projects into the second lumen (for example in a lower region thereof), i.e. it protrudes from a side wall or protrudes therefrom and optionally ends freely in the second lumen. The first leakage sensor is preferably a pin, stud, ring or tube or has a pin, stud, ring or tube. It can be designed or arranged to report the presence of liquid when it is wetted with liquid. A corresponding electrical voltage can be applied by means of a suitable device, for example between the first leakage sensor and the protective tube holding section.

[0034] If fluid leaks into the second lumen, this can be detected by the first leak sensor, as a current flow can then be measured. The first leak sensor can also be useful, for example, to determine after flushing the port whether there is no more fluid in it, as planned, before, for example, the flushing cap is opened or removed. For this reason, the first leak sensor could also be considered and / or referred to herein as a fill level sensor.

[0035] In some embodiments, the port further comprises a second leakage sensor, preferably a conductivity sensor. The second leakage sensor can be arranged to detect liquid that is located between the outer wall of the first fluid guide and the inner wall of the protective tube, which can indicate a leak in the connection between the port and the connector. It can be designed or arranged to report the presence of liquid when it is wetted with liquid. The second leakage sensor can be designed by appropriately applying and tapping voltage or by measuring current flow between the protective tube and the first fluid guide. A structural design, such as that designed for the first leakage sensor (pin, stud, etc.), can be dispensed with.

[0036] In some embodiments of the port, the protective tube has on its outside or on its circumference, e.g. on parts of its outer wall and / or along a part of its outer circumference, a device or one or more connection points which are prepared for connecting the protective tube to a connector (or vice versa) upon insertion of a portion of the connector into the port.

[0037] In some embodiments, this device is or comprises a hook, a part of a snap connection, a depression, a groove, circumferential or non-circumferential.

[0038] A flushing cap, as encompassed by certain embodiments, refers to a closure device designed and / or intended to close or seal the port from an exterior of the port or the medical treatment device by closing or sealing the second end opening of the second lumen. It can preferably be a closure cap.

[0039] The flushing cap can seal the port fluid-tight from the outside. The port lumen can be in fluid contact with the interior of the flushing cap.

[0040] In certain embodiments, the flushing cap is intended to enable or facilitate cleaning of the port by closing the port from the outside and allowing it to be flushed or rinsed through from the inside, even against the closing flushing cap.

[0041] In certain embodiments, the connector, its contact protection cover or its end section comprises, for example, PEEK (polyetheretherketone) or PEEK with PTFE

[0042] (Polytetrafluoroethylene) admixture or consists thereof. This or a similar material combination can advantageously reduce the connection forces to be overcome at the port due to its good sliding properties.

[0043] In certain embodiments, the port has a hydrophilic coating in at least some portions or is made of a hydrophilic material in those portions.

[0044] In order to minimize the flying of drops, e.g. when the flushing cap is moved away or pivoted, a hydrophilic coating of the port and / or the flushing cap may be preferred in certain embodiments.

[0045] In some embodiments, the port is part of a machine-side substitution system of the medical treatment device.

[0046] The treatment device comprises a housing with a fastening section, which serves to connect the medical treatment device to the port. The housing or the fastening section has a through-opening. This serves to insert a section of a rinsing cap to close the second lumen or the second end opening, for example, from the outside. In this case, the through-opening is preferably assigned a sealing device for sealing the through-opening against the section of the rinsing cap.

[0047] In some embodiments, the medical treatment device comprises a control device which is programmed to issue a leakage alarm or a leakage message, preferably indicating which of the leakage sensors has detected a leak or the type and / or genesis of the leakage and / or the location of its origin.

[0048] In some embodiments, the medical treatment device comprises a rinsing cap assembly which in turn has a pivoting lever which is arranged to be pivoted, e.g. by a user or automatically, about a pivot axis between a first pivoting position of the pivoting lever and a second pivoting position of the pivoting lever.

[0049] The rinsing cap arrangement has a receiving section for releasably and displaceably receiving a section of a rinsing cap, and optionally also a rinsing cap for temporarily closing the second lumen of the second fluid guide. The rinsing cap, if provided, is arranged in the rinsing cap arrangement with its section displaceable in the receiving section in such a way that, when the pivoting lever is pivoted, the second lumen of the second fluid guide is closed off from the exterior of the port or the treatment device. The pivoting lever is arranged so that, in order to close the second lumen of the second fluid guide, the pivoting lever can be pivoted from a first pivoting position of the pivoting lever into a second pivoting position.

[0050] In some embodiments, the receiving section and / or flushing cap are displaced in an axial direction of the port or the second fluid guide when the pivoting lever is pivoted. Optionally, the receiving section and / or flushing cap are displaced only in the axial direction.

[0051] In some designs, the pivot lever acts directly or indirectly on the receiving section by means of an eccentric.

[0052] In some embodiments, the port does not have a spring element, for example to enable the first fluid guide to be displaced in an axial direction within the port against the spring force.

[0053] In some embodiments, the port does not have a screw portion and / or thread provided to connect the disposable to the port.

[0054] In some embodiments, the connector does not have a ribbed structure with ribs on its outer side or wall, in particular no ribs that would extend to the connection opening or to the front end of the disposable or the connector, which end is intended to be inserted into the second lumen of the port when the connector is connected to the medical treatment device. In some embodiments, the disposable is not part of a blood cassette and / or not part of a treatment device, but in others it is.

[0055] In some embodiments, the connector or the wall surrounding the connector lumen is not provided to be movable or displaceable within the disposable.

[0056] In some embodiments, the connector or the, or a, wall surrounding the connector lumen is not intended to be movable or displaceable within a treatment cassette, such as a blood treatment cassette.

[0057] In some designs, the pivot lever is not intended to be rigidly connected to the flush cap.

[0058] In some embodiments, the walls defining the first and / or second lumen do not have any spherical or other shaped local thickenings, widenings and / or bulges of any kind.

[0059] In some embodiments, the contact protection sleeve of the connector has or consists of a tubular section, furthermore at least a first connecting section and / or a second connecting section.

[0060] In some embodiments, the first connecting section is designed to be connected to the wall of the contact protection cover, e.g., by hooking or clamping. The design may, for example, have the form of at least one locking lug, for example, pointing radially outward, which can engage in a recess, depression, groove, through-opening(s), or groove in the wall of the contact protection cover to establish a connected state.

[0061] In some embodiments, the second connecting portion is designed to connect the connector to a portion of a port, establishing a connected state, in order to be connected to a portion of the protective tube, for example by hooking it onto the device for connecting the protective tube, for example designed as a locking lug, for example pointing radially inwards, which can engage in a groove or notch or behind a bead or a protrusion.

[0062] In some embodiments, the disposable has both the first connecting portion and the second connecting portion, wherein the first connecting portion and the second connecting portion are arranged and / or designed to be able to be released from their respective, intended connection or their respective connected state by opposing forces in the radial direction.

[0063] In some embodiments, the tubular portion of the contact protection sleeve is provided to be movable, e.g. on the wall of the connector lumen or surrounding it.

[0064] In some embodiments of the disposable, a greater axial force is required to release the first connecting section from its connection than to release the second connecting section from its connection. In some embodiments of the disposable, the at least partially tubular section is connected to the first connecting section and the second connecting section, respectively, or is manufactured integrally.

[0065] If you pull on the connector to detach it from the port, the contact protection sleeve remains on the port, not on the connector. This can, among other things, also provide protection against turbulence and / or contaminated aerosols. In some versions, the contact protection sleeve remains on the connector, not on the port.

[0066] In some embodiments of the system, the sealing device of the through-opening leaves a circumferential gap opposite the connector or such a gap remains when the connector is inserted into the port.

[0067] In some embodiments, the system has a flushing cap which can be inserted into the through-opening to a maximum extent and / or can be inserted into the through-opening by means of the receiving section to such an extent that the flushing cap does not prevent fluid from escaping from the protective tube in the direction of the flushing cap in the longitudinal direction of the protective tube.

[0068] The flushing cap and / or flushing cap assembly can be dimensioned accordingly.

[0069] In some embodiments, the system comprises a disposable device that includes a fluid line and the connector. Some or all embodiments may include one, several, or all of the advantages mentioned above and / or below.

[0070] The present invention provides a medical treatment device with a disposable, which can advantageously satisfy the highest hygiene requirements placed on medical treatment methods.

[0071] The present invention advantageously ensures a germ-free environment at the connections between the disposable and the treatment device. This can help prevent germs from entering the patient's blood and thus increase patient safety.

[0072] All or some of the advantages that can be achieved with the disposable device can also be achieved without any reduction with the medical treatment device.

[0073] The present invention is described below with reference to the accompanying drawings. In the drawings, identical reference numerals designate identical or similar elements. The following applies:

[0074] Fig. 1 shows schematically a port for connecting a disposable with a medical treatment device according to the invention in fluid communication in a longitudinal section;

[0075] Fig. 2 shows the connection state between the port of Fig. 1 and a connector, e.g., a disposable, in a simplified longitudinal section; Fig. 3a shows a connector (without contact protection sleeve) of a disposable in a sectional view;

[0076] Fig. 3b shows a perspective view from the right of the connector of Fig. 3a with a view obliquely from the front into the connector lumen;

[0077] Fig. 4 shows on the right a further embodiment of the connector of Fig. 3a and Fig. 3b from the side with a contact protection sleeve (left), also in a side view, in which the contact protection sleeve is shown outside the contact protection cover;

[0078] Fig. 5a shows the connector of Fig. 3 and Fig. 4 with inserted contact protection sleeve in a perspective view obliquely from above;

[0079] Fig. 5b shows the end of the connector of Fig. 5a facing the port in an enlarged view with a view into the connector lumen;

[0080] Fig. 6 shows the connector of Fig. 5a and Fig. 5b when placed on a port in four successive states a) to d) until the complete connection between port and connector is achieved;

[0081] Fig. 7a shows a sectional view of the end of the port of Fig. 1 facing away from the machine during or after removal of the connector from the port; Fig. 7b shows details of the end of the port shown in Fig. 7a facing away from the machine after removal of the connector with the contact protection sleeve remaining on the port;

[0082] Fig. 8 shows on the left a locking mechanism for the port in the open position, on the right the locking mechanism in the closed position; and

[0083] Fig. 9 shows a simplified schematic of a fluid line structure of a medical technical treatment device according to the invention.

[0084] Fig. 1 shows a port 100 of a medical treatment device according to the invention in a first embodiment.

[0085] The port 100 has a first fluid guide 3 with at least one first lumen 31 and a first end opening 32. Flow can pass through the first lumen 31 in its longitudinal direction (axial direction), designated by its center line M. Fluid present in the first lumen 31 can exit the first fluid guide 3 through the first end opening 32.

[0086] The port 100 further has a second fluid guide 5 with at least one second lumen 51 and a second end opening 52. For the purpose of reference, the second end opening 52 in the embodiment of Fig. 1 is understood or referred to as a transition from an exterior Ä of the medical treatment device 2000, which is only indicated in Fig. 1, 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, with respect to the port 100, its first opening 32 is optionally located further in the interior I of the port 100 or the medical treatment device 2000, which is only indicated in Fig. 1 (i.e. further inside) than the second opening 52 of the second fluid guide 5.

[0087] The second end opening 52, which can be an opening plane, is provided for inserting a portion of a connector 4001 (see Fig. 6) of a disposable (not shown) into the interior of the port 100 through it, with the aim of establishing a fluid connection between the first fluid guide 3 and a connector lumen 4004 (see Fig. 3a or Fig. 6). The second end opening 52 is intended to guide the connector 4001, preferably in a positionally stable manner.

[0088] The port 100 is intended to establish a fluid connection between at least one fluid line 2002 of the treatment device 2000 assigned to or facing or allocated to the interior I of a medical treatment device 2000 on the one hand and a fluid line 4002 of the fluid-carrying disposable assigned to the connector 4001 of the exterior Ä of the treatment device 2000 on the other hand.

[0089] In Fig. 1, the port 100 is located in or behind a housing section of a housing 2001 of the medical treatment device 2000.

[0090] Fig. 1 shows the port 100 in a state in which 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 "closing state" of the port 100.

[0091] The optional flushing cap 200, which is placed on the port 100, closes the second end opening 52 and thus the interior of the port 100 as well as the two fluid guides 3, 5 against an exterior Ä of the port 100 and / or the medical treatment device 2000. For this purpose, an outer edge 202 of the flushing cap 200 is placed fluid-tight on or in the port 100. An end face 205 of the flushing cap 200 faces the interior I.

[0092] A second leakage sensor 2031 is optionally provided to provide early notification of a leak, 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, lines, evaluation devices, and alarm devices can be provided and suitably programmed where necessary.

[0093] An optional pivot lever 2011 (not shown in Fig. 1, see Fig. 8) may be provided for releasably receiving at least a portion of the flush cap 200 thereon.

[0094] It can be seen that a protective tube 400 is provided in the second lumen 51 of the second fluid guide 5. The protective tube 400 surrounds the fluid line 2002, at least in sections, but preferably along the entire circumference of that section. In the example in Fig. 1, the first end opening 32 of the first lumen 31 is surrounded by the protective tube 400. In the longitudinal section of Fig. 1 it can be seen that the (inner and / or outer) circumference of the protective tube 400 (top and bottom in the sectional view of Fig. 1) increases in a direction along the center line M or parallel thereto (towards the interior I) (from right to left in Fig. 1). The straight lines or curves showing the circumference in the section in longitudinal section in Fig. 1 therefore do not run parallel to one another, but are at a preferably constant angle to one another other than 0 degrees. In Fig .1, the cross-sectional area of ​​the lumen of the protective tube 400 increases towards the left, i.e. away from the second end opening 52, over a certain distance always or even continuously.

[0095] The protective tube 400, or a longitudinal section thereof, is arranged here between the boundary of the first lumen 31 by its side wall and the boundary of the second lumen 51 by its side wall.

[0096] Fig. 1 further shows that the protective tube 400 can optionally end in or have a funnel-shaped or diverging shape.

[0097] As can be seen from Fig. 1, the protective tube 400 optionally has a distance from the inner wall of the second lumen 51 and / or from the outer wall of the first lumen 31 in at least one longitudinal section.

[0098] The end of the protective tube 400 facing the exterior Ä of the treatment device 2000 is preferably spaced apart from the housing 2001 along its circumference. It optionally projects freely into the interior of the port 100. As can be seen from Fig. 1, the protective tube 400 has on its outer side or on its circumference a device 411 for connecting the protective tube 400 to a connector 4001 (see Fig. 6) of the disposable, not shown in Fig. 1, which is plugged onto the port 100 during use of the medical treatment device 2000.

[0099] The device 411 may be a hook, part of a locking connection, etc. The device 411 may be a structure closed along its circumference, similar to a ring.

[0100] Further optionally, the protective tube 400 is connected to adjacent sections of the port 100 and / or the housing 2001 by means of a protective tube holding section 415.

[0101] The protective tube holding section 415 can be a circumferential structure, which is inserted, for example, as a ring between adjacent structures of the port 100. It can be part of the second lumen 51 or be involved in its design. The protective tube 400 can be attached to and held by the protective tube holding section 415 in an interior thereof.

[0102] The protective tube holding section 415 and the protective tube 400 can be manufactured in one piece.

[0103] In some embodiments, the protective tube 400 is connected and / or in contact only with the protective tube holding section 415, but not with any other structure. In some embodiments, a sealing means 417 is provided to seal the protective tube holding section 415 against adjacent structures, for example in the form of a sealing ring. Alternatively or additionally, a sealing means 419, again designed as a sealing ring, can be provided for sealing against adjacent structures.

[0104] A leakage measurement can be performed using the first leakage sensor 2019 if it detects a voltage change in the protective tube holding section 415 compared to the optionally electrically conductive protective tube holding section 415. Applying and / or tapping a voltage or voltage change between the second leakage sensor 2019 and the protective tube holding section 415 is harmless to the patient, since neither the patient nor their fluids come into contact with the second leakage sensor 2019 or the protective tube holding section 415.

[0105] A second leakage sensor 2031 is indicated; it can measure a voltage change which occurs when a liquid bridge forms after a leak between the protective tube 400 and, for example, the first fluid guide 3.

[0106] Fig. 1 shows that the protective tube 400 and / or its protective tube holding section 415 does not completely prevent or inhibit a flow of fluid from one end of the second lumen 51 to the opposite end of the second lumen 51, but at most redirects or locally restricts it.

[0107] The housing 2001 may have a through-opening 2004, which may serve to insert a portion of the flushing cap 200 to seal the second opening 52 of the second lumen 51 from the outside. A sealing device 2006 may be provided to seal the through-opening 2004 from the flushing cap 200.

[0108] Fig. 2 shows the port 100 of Fig. 1 connected to a connector 4001. The connector 4001 is shown in more detail in the following figures with its optional features and in some other embodiments.

[0109] Reference is made to the reference numerals and the description of Fig. 1.

[0110] The connector 4001 has a fluid line 4002 which opens or ends into a connector lumen 4004 surrounded by a wall 4021 by means of an end opening 4023.

[0111] The connector lumen 4004 is surrounded by a contact protection cover 4017 and is spaced apart from it.

[0112] Contact protection cover 4017 ends with or at a connection opening 4019.

[0113] In the connected state shown in Fig. 2, the connector 4001 is inserted through the opening 2004 into the port 100, and the wall 4021 surrounding the fluid line 4002 is inserted into the first lumen 31 at the end. This creates a fluid connection between the fluid line 2002 and the fluid line 4002.

[0114] A contact protection sleeve 4031 is provided in the connector 4001.

[0115] It is arranged displaceably along the wall 4021, and in Fig. 2 it is shown in the position in which it is pushed into the maximum depth of the connector 4001; in the illustration of Fig. 2 this is to be understood as being to the right.

[0116] The contact protection sleeve 4031 can consist of a tubular section 4033, which rests displaceably on the wall 4021 of the fluid line 4002, a first connecting section 4035 and / or a second connecting section 4037, or can have these.

[0117] For the optional first connecting section 4035, reference is made at this point to the description of Fig. 4 ff in order to avoid repetition.

[0118] The optional second connecting section 4037 can be designed to be connected, for example, by means of hooking with the device 411 for connecting the protective tube 400 to a section of the connector 4001, for example with a locking lug that engages in a groove, recess, or the like of the protective tube 400. Reference is made to the optional design with locking lugs 4029 with regard to Fig. 4 or its description.

[0119] Fig. 3a shows a connector 4001 (without contact protection sleeve 4031, see Fig. 4) of a disposable in a sectional view, as was already shown in Fig. 2.

[0120] The connector 4001 has the fluid line 4002 surrounded, delimited by or formed by a wall 4021, which opens into a connector lumen 4004 by means of an end opening 4023, which in turn is surrounded by a contact protection sleeve 4017. The fluid line 4002 and the contact protection sleeve 4017 are spaced apart from one another.

[0121] The contact protection sleeve 4017, and thus also the connector lumen 4004, optionally projects beyond the end opening 4023 in the longitudinal direction L of the connector (to the left in Fig. 3a). The contact protection sleeve 4017 ends with or at a connection opening 4019.

[0122] With this connection opening 4019 in front, the connector 4001 would be pushed into the port 100 (see Fig. 2).

[0123] Fig. 3b shows the connector 4001 of Fig. 3a in a perspective view from the right with a view obliquely from the front into the connector 4001.

[0124] Reference is made to the reference numerals and the description of Fig. 3a.

[0125] Fig. 4 shows on the right a further embodiment of the connector 4001 analogous to Fig. 3a and Fig. 3b from the side with a contact protection sleeve 4031 (left) for the port 100, also in a side view, in which the contact protection sleeve 4031 is shown outside the contact protection sleeve 4017, ie in an un- or dismantled state.

[0126] Reference is made to the reference numerals and description of the preceding figures.

[0127] The contact protection sleeve 4031 and the connector 4001 are used in the assembled, i.e., connected, state, as shown in Fig. 5a. In contrast to the embodiment of Fig. 3a and Fig. 3b, the embodiment of the connector 4001 of Fig. 4 shows one or more recesses, here through openings 4025, in the contact protection sleeve 4017 near the connection opening 4019.

[0128] The contact protection sleeve 4031 has, by way of example, a tubular section 4033, an optional first connecting section 4035 and an optional second connecting section 4037 or consists of these sections, which are also described in more detail in the following figures.

[0129] The first connecting section 4035 serves to connect the contact protection sleeve 4031 to the contact protection cover 4017 and can be a clamping section, a locking section or the like. In the embodiment of Fig. 4, the first connecting section 4035 has radially outwardly projecting elements, e.g. locking lugs 4027, which are provided and / or suitable for being received in the recesses or through openings 4025 of the contact protection cover 4017 of the connector 4001 in order to establish a detachable connection between the contact protection sleeve 4031 and the connector 4001, in particular its contact protection cover 4017 (see Fig. 3a).

[0130] The second connecting section 4037 serves to connect the contact protection sleeve 4031 to the device 411 for connecting the protective tube 400 (see Fig. 2) and can be a clamping section, a locking section or the like. In the embodiment of Fig. 4, the second connecting section 4037 has radially inwardly projecting elements, e.g. locking lugs 4029, which are provided and / or suitable for being received in or on the device 411 for connecting the protective tube 400 to a section of the connector 4001 (see Fig. 2) in order to achieve a mechanical connection between the port 100 and the disposable. The radially inwardly projecting elements can ensure that the contact protection sleeve 4031 remains on the port 100 even after the disposable has been removed.It can serve as a contact guard, as it reduces the opening of port 100, preferably so that the user's finger cannot accidentally enter the opening and thus cannot contaminate the sealing point through contact with the finger. The contact protection sleeve 4031 remaining in port 100 can also provide protection against turbulence and aerosols.

[0131] Fig. 5a shows the connector 4001 of Fig. 3 and Fig. 4 with inserted contact protection sleeve 4031, i.e. in an assembled state, in a perspective view obliquely from above and from the front.

[0132] The first connecting section 4035 rests displaceably, but nevertheless releasably fixed by means of the locking lugs 4027 in the through opening 4025 on or on the inside of the contact protection sleeve 4017, while the locking lugs 4029 on the second connecting section 4037 protrude radially into the interior of the connector lumen 4004.

[0133] The tubular section 4033 of the contact protection sleeve 4031 is longitudinally displaceable around the fluid line 4002 or on it, this can be seen particularly well in Fig. 5b.

[0134] Fig. 5b shows the end of the connector 4001 of Fig. 5a facing the port 100 in an enlarged view looking into the connector lumen 4004. Reference is made to the reference numerals and the description of the preceding figures.

[0135] The tubular section 4033 of the contact protection sleeve 4031 is longitudinally displaceable around the fluid line 4002, the end opening of which is designated by the reference numeral 4023.

[0136] Fig. 6 shows the connector 4001 of Fig. 5a and Fig. 5b when placed on a port 100 in four successive states a) to d) until the complete connection between port 100 and connector 4001 is achieved.

[0137] Reference is made to the descriptions of the preceding figures. For clarity, not all reference symbols are shown in all states.

[0138] State a) shows port 100 on the left (see also the previous figures) and connector 4001 on the right, the latter having a detachable contact protection sleeve 4031, analogous to Fig. 5a or Fig. 5b. In this state, there is obviously no fluid connection between port 100 and connector 4001.

[0139] If, in state b), the connector 4001 is plugged onto the port 100 or at least partially inserted into it (the connection direction for this is shown in Fig. 6 by means of a block arrow), the contact protection sleeve 4031, in particular its second connecting section 4037, comes into contact with the end of the protective tube 400 assigned to the outer Ä. The detachable connection between the contact protection sleeve 4031 provided inside the contact protection sleeve 4017 and the wall 4021 is released when the connector 4001 is plugged onto the protective tube 400, for example when the locking lugs 4027 slide out of the through openings 4025 of the contact protection sleeve 4017 when the connector 4001 is pushed in or can be pulled out due to the relative movement between the contact protection sleeve 4031 and the wall of the contact protection sleeve 4017.After its release, the contact protection sleeve 4031 is longitudinally displaceable in the connector lumen 4004 within the contact protection sleeve 4017 along the fluid line 4002.

[0140] If the connector 4001 is pushed further onto the port 100 in state c), again shown in Fig. 6 by means of a block arrow, the optional elements of the second connecting section 4037, here by way of example the radially inwardly directed locking lugs 4029, finally engage in the device 411 for connecting the protective tube 400. This is highlighted in Fig. 6 for state c) by means of dashed circles.

[0141] In state d), the connector 4001 is pushed completely or maximally onto the port 100. By receiving the fluid line 4002 in a fluid-tight manner in the first lumen 31 of the port 100 by means of a positive and frictional fit, a fluid connection is established between the connector 4001 and the port 100. This is also highlighted here by a dashed circle.

[0142] The contact protection sleeve 4031 closes the inner lumen 31 of the port 100 and / or the end of the protective tube 400 facing the outside Ä, whereby droplets, caused by the connection process between port 100 and connector 4001, are directed into the areas to be kept sterile, namely the inner

[0143] Lumen 31, or at least the incoming air flow is reduced. At the same time, a remaining air gap 4040 between the circumferential sealing device 2006 and the outer circumference of the contact protection sleeve 4017 ensures that pressure equalization between the inner I and the outer Ä or a flow from the inner I to the outer Ä is possible. When pressure equalization occurs in this area, the risk of unwanted droplets flying is reduced.

[0144] The sliding of the connector 4001 onto the port 100 can be limited by various mechanical stop devices from the prior art, e.g. projections, positive locking or the like.

[0145] Fig. 7a shows the end of the port 100 of Fig. 1 facing away from the machine during or after removal of the connector 4001 from the port 100 in a sectional view.

[0146] If the connector 4001 is pulled off the port 100 in the direction of the arrow, the connection between the protective tube 400 and the contact protection sleeve 4031 means that the latter remains on the port 100 and forms a safeguard against reconnection of the connector 4001, once pulled off the port 100, to the port 100 on the one hand and a contact protection for the inner lumen 31 of the port 100 on the other. The re-attachment of the connector 4001, once pulled off, can be prevented by the gap width between the circumferential sealing device 2006 and the outer circumference of the contact protection sleeve 4017, which would require precise positioning of the connector 4001 on the port 100, which is hardly possible in practice. As explained above, it also advantageously protects against turbulence and backflow.

[0147] Fig. 7b shows details of the end of the port 100 shown in Fig. 7a facing away from the machine after removal of the connector 4001 (not shown in Fig. 7b) with the contact protection sleeve 4031 remaining on the port 100 in a sectional view.

[0148] Reference is made to the reference symbols and descriptions of the preceding figures.

[0149] In Fig. 7b, the exiting air flow through the air gap 4040 is marked by black arrows. The dimensions of the air gap 4040 are preferably selected so that turbulence is reduced or even avoided.

[0150] Fig. 8 shows on the left a locking mechanism for the port 100 in the open position, and on the right the locking mechanism in the closed position.

[0151] Reference is made to the reference symbols and descriptions of the preceding figures, in particular to Fig. 1.

[0152] In Fig . 8 a flushing cap assembly 2010 can be seen, which has a pivot lever 2011 and a receiving portion 2015 for slidably receiving a portion of a

[0153] Flushing cap 200. The pivoting lever 2011 is arranged to pivot about a pivot axis S at least between a first pivoting position (left) and a second pivoting position (right) of the pivoting lever 2011. Furthermore, the flushing cap arrangement has a flushing cap 200 for temporarily closing the second lumen 51 of the second fluid guide 5 (see Fig. 1).

[0154] The pivoting lever 2011 can be arranged in this as well as in any other embodiment in order to allow the insertion and / or removal of the disposable in the first pivoting position, while in the second pivoting position, when the disposable is inserted or plugged in, it holds the disposable by means of a spring-loaded pressure piece of the pivoting lever 2011 or presses it into the sealing position of the disposable in the port 100.

[0155] If a third pivot position (not shown) is provided for the pivot position, this can, for example, keep the port 100 closed, making it ready for optional hot disinfection.

[0156] The pivot lever 2011 can, in any embodiment—e.g., inside the pivot lever 2011—have an eccentric or toggle lever mechanism. This serves to translate the comparatively fast lever movement into a comparatively slow (preferably very, very slow) closing movement. If a suitable translation is achieved, the port 100 is closed sufficiently slowly so as not to encourage, for example, the flight of droplets when it is closed or opened. A damper known from the prior art for this purpose or other measures for monitoring or limiting the speed at which the port is closed can advantageously be omitted.

[0157] As already explained in relation to Fig. 1, the housing 2001 has a through-opening 2004, which can be used to insert a portion of the rinsing cap 200 in order to seal the second opening 52 of the second lumen 51 from the exterior Ä. A sealing device 2006 (see Fig. 1) can be provided to seal the through-opening 2004 from the rinsing cap 200.

[0158] If the pivoting lever 2011 is pivoted by means of a rotational movement of approximately 90° around the pivot axis S, i.e. in the direction of the arrow (figure left), the flushing cap 200 is displaced in an axial direction of the port 100 in the direction of the port 100 or in the direction of the second fluid guide 5 and thus closes it (figure right).

[0159] Opening the port 100 and thus ending the flushing position of the flushing cap 200 can be achieved by performing the rotational movement of the pivot lever 2011 about the pivot axis S in the opposite direction; this is not shown in Fig. 8.

[0160] The pivot lever 2011 can act directly or indirectly on the receiving section 2015 by means of an eccentric or by means of a toggle lever.

[0161] Fig. 9 shows a simplified schematic of a fluid line structure of a medical treatment device 2000, 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, for example, an additional Y-connector (reference symbol Y) as shown in Fig. 9 by means of single-

[0162] Needle access can be connected to the vascular system of the patient (not shown). The blood circuit 300 can optionally be present in sections thereof in or on a blood cassette.

[0163] Pumps, actuators and / or valves in the area of ​​the blood circulation 300 are connected to the treatment device 2000 or to a control device 150 comprised therein, for example.

[0164] The blood circuit 300 includes (or is connected to) an arterial patient tube clamp 302 and an arterial connection needle of an arterial section or an arterial patient line, blood collection 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, a venous patient line, blood return line, or second line 305.

[0165] A blood pump 101 is provided in or on the first line 301, a substituate pump 111 is connected to a dialysis fluid inlet line 104 for conveying fresh dialysis fluid which is filtered in a further filter stage (F2) (substituate). A substituate line 105 can be fluidically connected to the inlet line 104. By means of the substituate pump 111, substituate can be fed 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 a venous bubble trap 329) of the blood circuit 300.

[0166] 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 to a dialysate outlet line 102 leading away from the dialysis fluid chamber 303a and carrying dialysate, i.e., used dialysis fluid.

[0167] Dialysis fluid chamber 303a and blood chamber 303b are separated from each other by a mostly semi-permeable membrane 303c. This represents the dividing wall between the blood side with the extracorporeal blood circuit 300 and the machine side with the dialysis fluid or dialysate circuit, which is shown in Fig. 9 to the left of the membrane 303c.

[0168] The arrangement of Fig. 9 comprises an optional detector 315 for detecting air and / or blood. The arrangement of Fig. 9 further comprises one or two pressure sensors PS1 (upstream of the blood pump 101) and PS2 (downstream of the blood pump 101), which measures the pressure upstream of the blood filter 303 ("pre-hemo filter")) at the locations shown in Fig. 9. Further pressure sensors may be provided, e.g., the pressure sensor PS3 downstream of the venous bubble trap 329.

[0169] An optional single-needle chamber 317 is used in Fig. 9 as a buffer and / or compensation container in a single-needle procedure in which the patient is connected to the extracorporeal blood circuit 300 by means of only one of the two blood lines 301, 305.

[0170] The arrangement of Fig. 9 also includes an optional detector 319 for detecting air bubbles and / or blood.

[0171] An addition point 325 for an anticoagulant, e.g. heparin, can optionally be provided.

[0172] On the left in Fig. 9, a mixing device 162 is shown, which prepares a predetermined mixture for the respective solution for use by the treatment device 2000 from containers A (for A concentrate via concentrate supply 166) and B (for B concentrate via concentrate supply 168). The solution contains water (online, e.g., as reverse osmosis water or from bags) from the water source 155, which has been heated, for example, in the heating device 160.

[0173] A pump 171, which can be referred to as a concentrate pump or sodium pump, is fluidly connected to and / or pumps from the mixing device 163 and a source of sodium, such as container A. An optional pump 173, which is assigned to container B, such as for bicarbonate, can be seen.

[0174] The optional compressor mentioned herein bears the reference numeral 175 and is connected to port 100. Furthermore, Fig. 9 shows an outflow 153 for the effluent. An optional heat exchanger 157 and a first flow pump 159, which is suitable for degassing, complement the arrangement shown. Yet another pressure sensor can be provided as PS4 downstream of the blood filter 303 on the machine side, but preferably upstream of the ultrafiltration pump 131 in the dialysate outlet line 102 for measuring the filtrate pressure or membrane pressure of the blood filter 303. Further, optional pressure measuring points P can also be provided.

[0175] Blood leaving the blood filter 303 flows through the optional venous bubble trap 329 , which may have a venting device 318 and may be in fluid communication with the pressure sensor PS3 .

[0176] The exemplary arrangement shown in Fig. 9 includes the control or regulating device 150. It can be connected to any of the components mentioned herein—in any case or in particular to the blood pump 101—in a wired or wireless signal connection for controlling or regulating the treatment device 2000.

[0177] By means of the device for online mixing of the dialysis fluid, a variation of its sodium content, controlled by the control device 150, is possible within certain limits. For this purpose, in particular, the measured values ​​determined by means of conductivity sensors 163a, 163b can be included. Should an adjustment of the sodium content of the dialysis fluid

[0178] (sodium concentration) or of the substitution product as required or desired, this can be done by adjusting the delivery rate of the sodium pump 171.

[0179] In addition, the treatment device 2000 comprises means for conveying fresh dialysis fluid and dialysate. A first valve can be arranged between the first

[0180] A flow pump 159 and the blood filter 303 can be provided, which opens or closes the inlet to the blood filter 303 on the inlet side. A second, optional flow pump 169 is provided, for example, downstream of the blood filter 303, which pumps dialysate to the outlet 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.

[0181] Furthermore, the treatment device 2000 optionally comprises a device 161 for balancing the flow flowing into and out of the dialyzer 303 on the machine side. The balancing device 161 is preferably arranged in a line region between the first flow pump 159 and the second flow pump 169.

[0182] The treatment device 2000 further comprises means for precisely removing 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.

[0183] Sensors such as the optional conductivity sensors 163a, 163b are used to determine the conductivity, which in some embodiments is temperature compensated, as well as the liquid flow upstream and downstream of the dialyzer 303.

[0184] Temperature sensors 165a, 165b can be provided individually or in groups. The temperature values ​​they provide can be used to determine a temperature-compensated conductivity. Additional flow pumps, in addition to or as an alternative to, for example, those with reference numeral 169, can also be provided.

[0185] A number of optional valves are designated V in Fig. 9. Bypass valves are designated VB.

[0186] Based on the measured values ​​of the aforementioned optional sensors, in some embodiments the control device 150 determines the electrolyte and / or fluid balance.

[0187] Filters Fl and F2 can be connected in series.

[0188] The filter Fl serves here as an example to produce sufficiently pure dialysis fluid by means of the mixing device 163 even using non-pure water, which then flows through the blood filter 303, e.g. in the countercurrent principle.

[0189] The filter F2 serves here as an example to generate sterile or sufficiently filtered substituate from the sufficiently pure dialysis fluid which leaves the first filter Fl by filtering out, for example, pyrogenic substances, which can be safely added to the patient's extracorporeal blood and thus ultimately to the patient's body.

[0190] The treatment device 2000 is optionally shown in Fig. 9 as a device for hemodiafiltration. However, hemodialysis devices also fall within the scope of the present invention, although not specifically illustrated in the figure. A possible position of the port 100 within the treatment device 2000 can be seen.

[0191] The present invention is not limited to the embodiment described above, which serves only as an illustration.

[0192] The arrowheads shown in Fig. 9 generally indicate the direction of flow.

[0193] List of reference symbols

[0194] 100 ports

[0195] 3 first fluid guide (inside)

[0196] 5 second fluid guide (outside)

[0197] 31 first lumens

[0198] 32 first end opening

[0199] 51 second lumens

[0200] 52 second end opening

[0201] 101 Blood Pump

[0202] 102 Dialysate drain line

[0203] 104 Dialyzed fluid inlet line

[0204] 105 Substitute line

[0205] 107 Predilution valve

[0206] 107a line belonging to the predilution valve

[0207] 109 Postdilution valve

[0208] 109a line belonging to the post-dilution valve

[0209] 111 Substitution pump

[0210] 131 Ultrafiltration pump

[0211] 150 control device

[0212] 153 Drain or waste pipe

[0213] 155 Water source

[0214] 157 heat exchangers

[0215] 159 first river pump

[0216] 160 heating device

[0217] 161 Device for balancing

[0218] 162 Mixing device

[0219] 163a Conductivity sensor

[0220] 163b Conductivity sensor

[0221] 165a Temperature sensor

[0222] 165b Temperature sensor Concentrate supply Concentrate supply Second flow pump Pump, sodium pump Pump, bicarbonate pump Compressor Flushing cap Front of the flushing cap Extracorporeal blood circuit First line (arterial line section) (first) Tube clamp Blood filter or dialyzer a Dialysis fluid chamber b Blood chamber c Semi-permeable membrane Second line (venous line section) (second) Tube clamp Detector Single-needle chamber Venting device Detector Addition point for anticoagulant Venous bubble trap (optional) Protection tube Device for connecting the protection tube to a section of the connector Protection tube holding section Sealant Sealant 2000 medical int echnical treatment device

[0223] 2001 Housing

[0224] 2002 Fluid line

[0225] 2004 Passage opening

[0226] 2006 Sealing device

[0227] 2010 flush cap arrangement

[0228] 2011 swivel lever

[0229] 2013 Grip section

[0230] 2015 Recording section

[0231] 2019 first leakage sensor or level sensor

[0232] 2031 second leak sensor

[0233] 4001 connector

[0234] 4002 fluid line associated with the exterior of the treatment device

[0235] 4004 connector lumens

[0236] 4017 Be touch protective cover

[0237] 4019 Connection opening

[0238] 4021 Wall of the fluid line

[0239] 4023 end opening of the fluid line

[0240] 4025 passage opening

[0241] 4027 radially outward-facing locking lug

[0242] 4029 radially inward-facing locking lug

[0243] 4031 contact protection sleeve

[0244] 4033 tubular section of the contact protection sleeve

[0245] 4035 first connecting section

[0246] 4037 second connecting section

[0247] 4040 air gap

[0248] Ä Exterior

[0249] A Container for concentrate; sodium B Container for concentrate; bicarbonate

[0250] Fl Filter

[0251] F2 filter

[0252] I Interior

[0253] L Longitudinal direction of the connector / disposable

[0254] M center line

[0255] S swivel axis

[0256] P pressure measuring points

[0257] PSI arterial pressure sensor (optional)

[0258] PS2 arterial pressure sensor (optional)

[0259] PS3 pressure sensor (optional)

[0260] PS4 pressure sensor for measuring the filtrate pressure

[0261] (optional)

[0262] V valves

[0263] VB bypass valves

[0264] Y Y-connector

Claims

Claims 1. Disposable, which comprises a fluid line (4002) and a connector (4001) for fluidically connecting the fluid line (4002), for example with a first lumen (31) of a first fluid guide (3) of a Ports (100) of a medical treatment device (2000), wherein the connector (4001) has a connector lumen (4004), at least partially surrounded or formed by a wall (4021), and a contact protection sleeve (4017) which has a connection opening (4019), wherein in the interior of the contact protection sleeve (4017) the connector lumen (4004) opens or ends in an opening (4023), and wherein the connector (4001) has a contact protection sleeve (4031) which is arranged along the wall (4021) of the connector lumen (4004), or relative to the wall (4021), displaceably within the contact protection sleeve (4017).

2. Disposable (4000) according to claim 1, wherein the contact protection sleeve (4031) has an at least partially tubular section (4033) and / or has a first connecting section (4035) and / or a second connecting section (4037), or consists thereof.

3. Disposable (4000) according to claim 2, wherein the first connecting portion (4035) has at least one Has or is configured to engage in a recess, depression, groove, one or more through-openings (4025) or in a groove of the contact protection cover (4017) to establish a connected state.

4. Disposable (4000) according to claim 2 or 3, wherein the second connecting portion (4037) is designed to connect the connector (4001) to establish a connected state with a portion of a Ports (100), e.g. of a protective tube (400) thereof, wherein the second connecting portion (4037) is optionally designed as a locking lug (4037) which engages in a groove or notch or behind a bead.

5. Disposable (4000) according to one of claims 2 to 4, comprising both the first connecting section (4035) and the second connecting section (4037), wherein the first connecting section (4035) and the second connecting section (4037) are arranged and / or designed to be able to be released from their respective, intended connection or their respective connected state by opposing forces in the radial direction.

6. Disposable (4000) according to one of claims 2 to 5, wherein the at least partially tubular section (4033) is provided displaceably on the wall (4021) of the connector lumen (4004) or surrounding it.

7. Disposable (4000) according to one of claims 2 to 6, comprising both the first connecting portion (4035) and the second connecting portion (4037), wherein a greater axially acting force is required to release the first connecting portion (4035) from its connected state than to release the second connecting portion (4037) from its connection.

8. Disposable (4000) according to one of claims 2 to 7, wherein the at least partially tubular section (4033) is connected to the first connecting section (4035) and to the second connecting section (4037) or is manufactured integrally.

9. Medical treatment device (2000) comprising a disposable (4000) according to one of claims 1 to 8.

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