Medical valve system

Abstract

Medical valve system (1 to 1f) for administering at least two drug liquids with - a valve housing (2 to 2f) with at least two drug inlets (E1 to E4) for receiving one of the drug liquids each, which are fluid-conductingly connected to a drug outlet (A1 to A4) arranged on an inner housing circumferential surface (4), - a valve body (3 to 3f) arranged at least partially in the valve housing (2 to 2f), which is rotatable about an axis of rotation relative to the inner housing circumferential surface (4), with an outer body circumferential surface (7) and an inner body surface (9) and a passage (11, 11a, 11c, 11d) arranged on the outer body circumferential surface (7), - a rinsing inlet (10) for receiving a rinsing fluid which is fluid-conductingly connected to a rinsing outlet (8) and - a valve outlet (19, 19a, 19c, 19d) for the discharge of the rinsing fluid and / or at least one of the medication fluids, which is fluid-conductingly connected to the passage (11, 11a, 11c, 11d), - wherein the valve body (3 to 3f) is rotatable in - at least two medication positions in which the passage (11, 11a, 11c, 11d) is connected to one of the medication outlets (A1 to A4) in such a fluid-conducting manner that the respective medication fluid can be conducted through the valve outlet (19, 19a, 19c, 19d), and - at least one flushing position in which the passage (11, 11a, 11c, 11d) is connected to the flushing outlet (8) via a flushing channel (K, Ka, Kd) in such a fluid-conducting manner that the flushing fluid can be conducted through the valve outlet (19, 19a, 19c, 19d) and residues of the first and / or second drug fluid can be flushed from the passage (11, 11a, 11c, 11d) and the valve outlet (19, 19a, 19c, 19d), characterized in that the flushing inlet (10) and the valve outlet (19, 19a, 19c, 19d) are arranged on the valve body (3 to 3f).

Description

[0001] The invention relates to a medical valve system for administering at least two drug liquids with - a valve housing with at least two drug inlets for receiving one of the drug liquids each, which are fluid-conductingly connected to a drug outlet each arranged on an inner circumferential surface of the housing, - a valve body arranged at least partially in the valve housing, which is rotatable about an axis of rotation relative to the inner housing circumferential surface, with an outer body circumferential surface and an inner body surface and a passage arranged on the outer body circumferential surface, - a rinsing inlet for receiving a rinsing fluid, which is fluid-conductingly connected to a rinsing outlet and - a valve outlet for dispensing the rinsing fluid and / or at least one of the medication fluids, which is fluid-conducting and connected to the passage, - wherein the valve body is rotatable in - at least two medication positions in which the passage is connected to one of the medication outlets in such a fluid-conducting manner that the respective medication fluid can be conducted through the valve outlet, and - at least one flushing position in which the passage is connected to the flushing outlet via a flushing channel in such a fluid-conducting manner that the flushing fluid can be conducted through the valve outlet and residues of the first and / or second drug fluid can be flushed from the passage and the valve outlet.

[0002] Such a medical valve system is known from WO 2016 / 037 646 A1 and is intended for the serial delivery of medications during infusion therapy. In the known valve system, the flushing inlet is located on an outer surface of the valve housing. The flushing outlet is located on the inner circumferential surface of the housing and is fluid-conductingly connected to the flushing inlet. In the flushing position, the flushing fluid therefore first flows radially through the valve housing from the outside to the inside, then enters the passage on the valve body either directly or via the flushing channel through a first sealing point, flows through this passage radially from the outside to the inside and axially from top to bottom, and finally enters a valve outlet located on the valve housing through a second sealing point and is discharged from the valve system through this outlet.

[0003] German patent DE 35 03 044 A1 discloses a device for administering infusions, transfusions, or injections, as well as for aspiration of blood, which comprises a multi-way stopcock. This stopcock includes a housing with three connection ports, each offset by 90°, for connecting lines, one of which can be connected to the patient. It also includes a stopcock spigot with three channels, each offset by 90°. To ensure hygienically sound, aseptic treatment, the housing is provided with a fourth connection port for connecting a flushing line, located between the connection port leading to the patient and the adjacent connection port.The tap spigot is equipped with a flushing channel on its casing, which optionally connects this flushing port to an adjacent connection port, so that the corresponding connection port can be flushed after the injection of medication or the aspiration of blood by turning the tap handle.

[0004] From US 9,764,126 B2 and US 2014 / 0346386 A1, a valve for administering multiple drug liquids, such as cytostatics, is known. The valve comprises: a housing with several circumferentially arranged primary inlets for supplying a drug liquid each, a secondary inlet for a secondary liquid, such as a neutral liquid, an outlet, and a valve element arranged within the housing. The housing has several primary valve positions, in each of which one of the primary inlets is connected to the outlet, as well as several intermediate positions in which the secondary inlet is connected to the outlet. The outer surface of the valve element seals against the inner surface of the housing, so that in the respective primary and intermediate positions, the primary and secondary inlets are tightly connected to openings in the outer surface of the valve element.

[0005] From US Patent 5,104,387 A, a fluid control valve is known that has a valve body with a cylindrical bore and several channels extending between the bore and an outer surface of the valve body. The inner ends of at least two of these channels lie in a first plane, while the inner end of at least one other channel lies in a second plane. A valve stem rotatably mounted in the bore has two independent channels. One of these channels has both ends in the first plane, while the other channel has one end in the first plane and the other end in the second plane.

[0006] US Patent 4,758,235A discloses a device for the intravenous administration of a range of solutions for cardiopulmonary resuscitation. Each solution is contained in a separate syringe, which is fixed to a base plate. All syringes are connected simultaneously to a multi-way stopcock, which has several inlets and a single outlet, connected via tubing to a needle in the patient's vein. A selector switch on the stopcock is turned to a specific inlet to select the solution from the corresponding syringe.

[0007] From WO 2009 / 043 555 A1, a system for the withdrawal and infusion of body fluids, in particular blood, is known, which has a fluid distribution device consisting of an outer and a movable inner component. The inner component contains a cavity for fluid intake and discharge. In one position, the cavity connects a patient-side port to an infusion-side port, while in another position, a connection is established between an analyzer-side port and an associated port.

[0008] The object of the invention is to create a medical valve system of the type mentioned above that enables improved sealing while simultaneously optimizing the use of installation space.

[0009] This problem is solved by arranging the flushing inlet and the valve outlet on the valve body. As a result of the solution according to the invention, more installation space is available on the valve housing for arranging the medication inlets. Consequently, optimized use of installation space is achieved. In this way, potentially leaky sealing points between the valve body and the valve housing can also be eliminated, thus reducing the risk of leakage. A valve outlet within the meaning of the invention is understood to be the last section of the fluid-conducting geometry of the valve system in the usual flow direction. In this respect, the valve outlet is to be understood as a section of the fluid-conducting geometry of the valve system through which flushing or medication fluid leaves the valve system.Advantageously, the valve outlet is formed by a through-opening, in particular a bore, provided in the valve body. The valve outlet can alternatively or additionally comprise a sleeve, a port, or the like arranged on the valve body. A flushing inlet within the meaning of the invention is understood to be a section of the fluid-conducting geometry of the valve body through which flushing fluid can be directed in the flushing position without first flowing through the valve housing. In this respect, a flushing inlet is understood to be a through-opening, in particular a bore, provided in the valve body. A medicinal fluid within the meaning of the invention is not to be understood exclusively as liquid compositions that are medically active. Rather, the term medicinal fluid is to be interpreted broadly and therefore also includes blood products, nutrient solutions, contrast agents, or the like.For the purposes of this invention, the term "flushing fluid" encompasses medically neutral liquids suitable for flushing the valve system and / or administering it to a patient. The flushing fluid is preferably a saline solution. Positional and / or directional terms used in this description, such as top, bottom, front, back, inside, outside, or the like, refer to an imaginary orientation of the valve system in space, in which the axis of rotation of the valve body is substantially aligned with the vertical axis of space and such that the valve outlet is located below the drug inlets with respect to the vertical axis of space.

[0010] In an embodiment of the invention, the flushing inlet is arranged on the inner surface of the valve body and the flushing outlet is arranged on the outer circumferential surface of the valve body, so that the flushing fluid can be directed through the valve body from the inside to the outside in the flushing position. Advantageously, the flushing inlet is connected to the flushing outlet via a through-bore extending substantially radially to the axis of rotation.

[0011] In a further embodiment of the invention, the valve body has an inlet channel that is fluid-conducting and connected to the flushing outlet, extending substantially axially to the axis of rotation of the valve body, and a discharge channel that is fluid-conducting and connected to the through-flow and the valve outlet, extending substantially axially to the inlet channel. Consequently, a flush and vertical alignment of the hose inlet and discharge channels, respectively, is achieved. This embodiment of the invention therefore enables a flow-optimized arrangement of these hoses and thus optimized flow through the valve system.The inlet channel and the outlet channel are separated from each other by a fluid-tight partition, preventing direct flow of the flushing fluid from the inlet channel to the outlet channel – bypassing the flushing outlet, the flushing channel, and the passage. The inlet channel is fluidly connected to the flushing outlet via the flushing inlet.

[0012] In a further embodiment of the invention, the flushing outlet is arranged below the passage, wherein the valve body has a first transfer channel that fluidly connects the flushing inlet to the supply channel, and a second transfer channel that fluidly connects the passage to the discharge channel, and wherein the transfer channels are arranged at least partially adjacent to one another in the axial direction of the valve body. In this way, proper fluid flow is achieved.

[0013] In a further embodiment of the invention, the first transfer channel and the second transfer channel are extended at least sectionally in a substantially parallel manner to each other and are separated from each other by a substantially axially extended partition wall.

[0014] In a further embodiment of the invention, the first transfer channel and / or the second transfer channel extends obliquely to the axis of rotation.

[0015] In a further embodiment of the invention, the flushing channel is designed in an annular shape between the inner housing circumferential surface and the outer body circumferential surface. Consequently, the flushing channel can be almost completely filled with the flushing fluid, reducing the risk of unfilled areas. This prevents the formation of undesirable and potentially dangerous air inclusions in the fluid-conducting geometry of the valve system, resulting in a particularly reliable valve system. The annular shape of the flushing channel can advantageously be achieved by a corresponding arrangement of the flushing outlet and the passage, whereby, in particular, a type of flow obstruction can be arranged between the flushing outlet and the passage.

[0016] In a further embodiment of the invention, the valve body has at least one radial projection arranged on its circumferential surface such that at least one flow obstruction is formed in the flushing channel. Advantageously, the flow obstruction is arranged such that a flow-related short circuit between the flushing outlet and the through-flow is avoided. The projection thus at least partially closes the cross-section of a flushing channel section. This embodiment of the invention results in improved filling of the flushing channel with the flushing fluid and ultimately increased operational reliability.

[0017] In a further embodiment of the invention, a first detent connection is provided between the valve housing and the valve body for rotatingly securing the valve body to the valve housing. Accordingly, the first detent connection enables a defined rotational alignment of the valve body relative to the valve housing, particularly in the flushing position and / or the first and second medication positions. This prevents unintentional movement out of the flushing position and / or the medication positions and achieves improved operational reliability of the valve system.

[0018] In a further embodiment of the invention, a second locking connection is provided between the valve housing and the valve body, arranged such that the valve body can only be rotated in one direction around the axis of rotation. This second locking connection thus allows a predefined sequence of serially achievable positions of the valve body. This prevents the valve body from unintentionally rotating back, for example, to a previously set position. This is a particularly safe and easy-to-handle embodiment of the valve system according to the invention.

[0019] In a further embodiment of the invention, the first and / or second locking connection each has a profile arranged circumferentially on a circumferential surface of the valve body. The profile can have radial projections and / or radial recesses.

[0020] In a further embodiment of the invention, the valve body has at least one manually actuated release element, which is designed such that the profile is elastically radially expandable, thereby allowing the first and / or second detent connection between the valve body and the valve housing to be released. Accordingly, the release element is movable between a locked position in which the first and / or second detent connection is immovably engaged, and a released position in which the first and / or second detent connection is movable. Advantageously, the valve body has two release elements, one of which is assigned to the first detent connection and the other to the second. Alternatively or additionally, the release element can be arranged on the valve housing. This prevents the first and / or second detent connection from being unintentionally released.

[0021] In a further embodiment of the invention, a first connecting sleeve with a longitudinal bore for fluid-tight reception of a flushing fluid supply line is provided, wherein the longitudinal bore is fluid-conductingly connected to the flushing inlet, and wherein the first connecting sleeve is fixed to the valve body at its end face and coaxially to the axis of rotation such that the valve body is rotatable relative to the first connecting sleeve. Advantageously, the flushing fluid supply line can be a hose. The rotatable first connecting sleeve thus counteracts, on the one hand, unintentional twisting of the flushing fluid supply line by rotation of the valve body and, on the other hand, unintentional twisting of the valve body by rotation of the flushing fluid supply line. This embodiment of the invention achieves improved operational reliability of the valve system according to the invention.

[0022] In a further embodiment of the invention, a second connecting sleeve with a longitudinal bore is provided for fluid-tight reception of a valve outlet. The longitudinal bore is fluid-conducting and connected to the through-bore. The second connecting sleeve is fixed to the valve body at its end face and coaxially to the axis of rotation, such that the valve body is rotatable relative to the second connecting sleeve. Advantageously, the valve outlet can be a hose. The rotatable second connecting sleeve counteracts both unintentional twisting of the valve outlet by rotation of the valve body and unintentional twisting of the valve body by rotation of the valve outlet. This embodiment of the invention achieves a further improvement in the operational reliability of the valve system according to the invention.

[0023] In a further embodiment of the invention, the first connecting sleeve and / or the second connecting sleeve are / are rotationally fixed to the valve housing. Rotationally fixed means that rotation between the first and / or the second connecting sleeve and the valve housing is prevented. Consequently, a torsionally rigid connection of the flushing fluid supply line or valve outlet, which can be connected to the respective connecting sleeve, to the valve housing is achieved. This prevents unintentional twisting of the flushing fluid supply line and / or the valve outlet due to rotation of the valve body between different positions.

[0024] In a further embodiment of the invention, the first and / or the second connecting sleeve each has a cover plate arranged such that a radial gap formed between the valve body and the valve housing is covered at its end face. Such a radial gap can be difficult to access for cleaning purposes, which can lead to an undesirable and potentially hazardous accumulation of germs. This embodiment of the invention counteracts this problem.

[0025] In a further embodiment of the invention, the valve body has a connecting channel which is fluid-conductingly connected to the flushing channel in at least one of the medication positions, and the second connecting sleeve has a transverse bore extending from the outer circumferential surface of the connecting sleeve into its longitudinal bore, wherein the second connecting sleeve is rotatable relative to the valve body from the respective medication position into a back-priming position in which the transverse bore is fluid-conductingly connected to the connecting channel. This embodiment of the invention enables backflushing of the respective medication inlet with flushing fluid.If the valve body is in one of the medication positions and the second connecting sleeve is in the priming position, a fluid-conducting connection is established between the flushing inlet, the flushing outlet, the flushing channel, the connecting channel, the transverse bore and the longitudinal bore of the second connecting sleeve, as well as the passage, the respective medication outlet, and the corresponding medication inlet. Flushing fluid can then be flushed through the medication inlet along this fluid-conducting connection, thus "priming" it. For this purpose, the valve outlet or the valve drain is advantageously closed, for example, by means of a plug, a clamp, or the like.

[0026] In a further embodiment of the invention, a sealing element is provided between the outer circumferential surface of the valve body and the inner circumferential surface of the housing for sealing a radial gap between the valve body and the valve housing. The sealing element can advantageously have rubber-elastic material properties and thus an elastomeric material composition. In this way, a particularly reliable seal of the valve system can be achieved, especially compared to simply pressing the outer circumferential surface of the valve body against the inner circumferential surface of the housing.

[0027] In a further embodiment of the invention, a cover device is provided on the end face of the valve housing. This cover device comprises a base body with a through opening for receiving a hose and at least one cover element located in the area of ​​at least one of the medication inlets. The cover element is designed to restrict manual access to the medication inlet. Advantageously, the cover device can be designed as a separate component that can be connected to the valve housing. The cover element is advantageously manufactured as an injection-molded component and is made of a plastic material. This embodiment of the invention prevents the unintentional detachment of medication lines connected to the medication inlets and thus creates a particularly reliable valve system.

[0028] In a further embodiment of the invention, the cover element comprises a connecting element designed such that a medication supply line can be positively locked to the cover element. For this purpose, the cover element can advantageously have a clamping or locking unit that can be detachably connected to a section of the medication supply line.

[0029] In a further embodiment of the invention, the cover element is attached to the base body by means of a fastening device so as to be pivotable relative to the base body, in particular by means of a film hinge. Advantageously, the cover element is pivotable between a locking position, in which the cover element is attached to the section of the drug supply line, and a release position, in which no such fastening is present.

[0030] Further advantages and features of the invention will become apparent from the claims and from the following description of preferred embodiments of the invention, which are illustrated with reference to the drawings. Fig. Figure 1 shows a schematic, perspective representation of a first embodiment of a valve system according to the invention, Fig. 2 in a schematic, perspective representation the valve housing of the valve system according to Fig. 1 from a top-down perspective, Fig. 3 the valve housing after Fig. 2 from a lower perspective, Fig. 4 in schematic, perspective sectional view the valve housing according to Fig. 2 and Fig. 3, Fig. 5 in a schematic, perspective representation the valve body of the valve system according to Fig. 1, Fig. Figures 6 and 7 show the valve body in a schematic, perspective sectional view. Fig. 5 in a first sectioning plane ( Fig. 6) and in a section plane rotated approximately 90° to this plane ( Fig. 7) Fig. Figures 8 and 9 show the valve system in a schematic, perspective sectional view. Fig. 1 along a first cutting plane ( Fig. 8) and a sectioning plane rotated approximately 90° relative to this ( Fig. 9) Fig. 10 in a schematic, perspective representation a first resting area of ​​the valve system after Fig. 1, Fig. 8 and 9, Fig. 11 in schematic, perspective representation a second detent area of ​​the valve system after Fig. 1, Fig. 8 and 9, Fig. 12 in schematic side view a second embodiment of a valve system according to the invention, Fig. Figures 13 and 14 show the valve system in a schematic longitudinal section view. Fig. 12 in a medication position ( Fig. 13) and in a flushing position ( Fig. 14) Fig. 15 in schematic side view a third embodiment of a valve system according to the invention, Fig. 16 in schematic longitudinal section view the valve system according to Fig. 15 in a medication position, Fig. 17 in schematic, perspective representation a fourth embodiment of a valve system according to the invention, Fig. 18 in schematic side view the valve system according to Fig. 17, Fig. 19 in schematic cross-sectional representation the valve system according to Fig. 17 and Fig. 18 in a section plane FF, Fig. 20 in schematic longitudinal section view the valve system according to Fig. 17, Fig. 18 to Fig. 19 in a section plane GG, Fig. 21 in schematic longitudinal section view the valve system according to Fig. 17, Fig. 18, Fig. 19 to Fig. 20 in a section plane EE, Fig. 22 in schematic top view a fifth embodiment of a valve system according to the invention, Fig. 23 in schematic longitudinal section view the valve system according to Fig. 22 in a section plane TT, Fig. 24 in schematic, perspective view a cover device of a valve system according to the invention, Fig. 25 in schematic, perspective representation a sixth embodiment of a valve system according to the invention comprising the cover device according to Fig. 24 and Fig. 26 in schematic longitudinal section view a sixth embodiment of a valve system according to the invention comprising a sealing element.

[0031] Based on the Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10, Fig. 11, Fig. 12, Fig. 13, Fig. 14, Fig. 15, Fig. 16, Fig. 17, Fig. 18, Fig. 19, Fig. 20, Fig. 21, Fig. 22, Fig. 23, Fig. 24, Fig. 25 to Fig. Figure 26 shows various medical valve systems 1 to 1f according to the invention, which are particularly intended for use in infusion therapy. Valve systems 1 to 1f are particularly advantageous for the administration of cytostatic drugs.

[0032] Each of the valve systems 1 to 1f has a valve housing 2 to 2f and a valve body 3 to 3f. The structural and functional design of the valve housings 2 to 2f and the valve bodies 3 to 3f is largely identical across the various valve systems 1 to 1f. The essentially identical features of the valve housings 2 to 2f and the valve bodies 3 to 3f are therefore described in more detail below using the valve housing 2 and the valve body 3 of valve system 1 as examples. Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Fig. 10 to Fig. 11 explained. These features are readily transferable by the person skilled in the art to the other valve systems 1a to 1f according to the invention, so that a separate explanation of these features in connection with these embodiments is omitted.

[0033] As particularly evident from the Fig. 2, Fig. 3 to Fig. As can be seen in Figure 4, the valve housing 2 has several drug inlets E1 to E4. Each drug inlet E1 to E4 is designed to receive a drug liquid and is fluid-conductingly connected to a drug outlet A1 to A4 located on an inner circumferential surface 4 of the valve housing. The drug inlets E1 to E4 are arranged on radially projecting connection ports S1 to S4 in the form of longitudinal bores. At their end faces, connection ports S1 to S4 are each provided with an unspecified threaded connection for connection to unspecified tubing for supplying the respective drug liquid. Alternatively or in addition to the threaded connection, connection ports S1 to S4 may have different connection geometries or with attached tubing sections.The valve housing 2 also has a retaining element 5 projecting radially from the base body of the valve housing 2. A substantially circular cylindrical through-bore 6 extends between the two end faces of the valve housing 2. This through-bore 6 is designed to accommodate at least the valve body 3, at least partially. For this purpose in particular, an axial section of the through-bore 6 can have a first diameter dimension and a further axial section a second diameter dimension, so that the through-bore 6 can be stepped.

[0034] The valve body 3 is particularly evident from the Fig. 5, Fig. 6 to Fig. The valve body 3 is shown in more detail in Figure 7 and has an outer circumferential surface 7, which is designed to be received in the through-bore 6 of the valve housing 2. The valve body 3 has a flushing outlet 8 arranged on the outer circumferential surface 7. The flushing outlet 8 is fluid-conductingly connected to a flushing inlet 10 arranged on an inner surface 9. In this respect, the fluid-conducting connection between the flushing inlet 10 and the flushing outlet 8 has the form of a transverse bore, which extends, at least partially, substantially radially through a wall region of the valve body 3. In an upper region of the valve body 3, a supply channel 12 extends, which is oriented substantially axially to the axis of rotation of the valve body 3 and is fluid-conductingly connected to the flushing outlet 8 via the flushing inlet 10.A drainage channel 13 is provided in a lower region of the valve body, extending essentially axially to the axis of rotation of the valve body 3 and fluidly connected to the passage 11. The lower end face of the drainage channel 13 forms the valve outlet 19 of the valve system 1. A wall region of the valve body 3, arranged between the supply channel 12 and the drainage channel 13, prevents a direct fluid-conducting connection between them. The purge outlet 8 is located in the axial direction of the valve body 3, as shown in the figure. Fig. 6 and Fig. As can be seen in Figure 7, the valve body 3 is located below the passage 11. Furthermore, the valve body 3 has a first transfer channel 14 that connects the flushing inlet 10 to the supply channel 12. A second transfer channel 15 is also provided, which connects the passage 11 to the discharge channel 13. The two transfer channels 14 and 15 extend essentially in the axial direction of the valve body 3 and run parallel to each other, at least in sections, in the axial direction.

[0035] In particular, valve system 1 and valve system 1a ( Fig. 13, Fig. 14) The first transfer channel 14, 14a and the second transfer channel 15, 15a extend parallel to each other and are separated from each other by a substantially axially extending partition 16, 16a. In the valve system 1b according to the Fig. 15 and Fig. 16, the first transfer channel 14b and the second transfer channel 15b, however, extend obliquely to the axis of rotation of the valve body 3b and to each other, in the sense of not being parallel to each other.

[0036] The valve body 3 also has a projection 17 extending radially from the outer circumferential surface 7, which extends tangentially along a section of the outer circumferential surface 7 between the flushing outlet 8 and the passage 11. A handling element 18, projecting both axially and radially, is also provided at a lower end face of the valve body 3.

[0037] In a state arranged in the valve housing 2, the valve body 3 is rotatable relative to the inner housing circumferential surface 4 into several medication positions and at least one flushing position. Advantageously, the valve body 3 can be joined to the valve housing 2, at least partially, by means of an interference or transition fit, so that fluid leakage at points in the valve system 1 not intended for this purpose is prevented. In a medication position, such as that described, for example, by Fig. As can be seen in Figure 13 for the valve system 1a, the passage 11a is fluid-conductingly connected to one of the drug outlets A1a, so that the respective drug fluid can be conducted through the valve outlet 19a arranged in the valve body 3a. In an analogous manner, such a drug arrangement is described in connection with the valve system 1b according to the invention. Fig. 16 and the valve system 1c according to Fig. 20. This functionality can be transferred analogously to the other valve systems 1, 1d to 1f according to the invention, so that a separate explanation in connection with these embodiments is unnecessary.

[0038] The valve bodies 3 to 3f of the valve systems 1 to 1f according to the invention are each rotatable into at least one flushing position. Such a position is defined in connection with the valve system 1 based on the Fig. 8 and Fig. Figure 9 shows that in this rotational position of the valve body 3, a fluid-conducting connection is established between the inlet channel 12 and the outlet channel 13, and thus with the end face of the valve outlet 19 located on the valve body 3. This fluid-conducting connection extends from the inlet channel 12 through the first transfer channel 14 into the flushing inlet 10, from there through the flushing outlet 8 into a flushing channel K, which extends in an annular shape between the inner housing circumferential surface 4 and the outer body circumferential surface 7, further into the passage 11, from there into the second transfer channel 15 into the outlet channel 13 and the valve outlet 19. In this way, any drug residues from the passage 11 and the valve outlet, as well as from the second transfer channel 15 and the outlet channel 13, can be flushed away.In this process, the rinsing fluid flows through the valve body 3 to 3f in a radial direction from the inside to the outside between the rinsing inlet 10 and the rinsing outlet 8.

[0039] The radial projection 17 of the valve body 3 is arranged on the body's circumferential surface 7 in such a way that a flow obstruction is formed in the flushing channel K. This flow obstruction therefore at least partially closes the cross-section of a flushing channel section not shown in detail and thus allows for proper fluid flow along the flushing channel K.

[0040] The valve system 1 further comprises a first detent connection 20 between the valve housing 2 and the valve body 3 for rotationally fixing the valve body 3 to the valve housing 2. As can be seen in particular from Fig. As can be seen in Figure 10, the first locking connection 20 is formed on the upper end face of the valve system 1 and comprises a profile 21 formed on an outer circumferential surface of the valve body 3. The profile 21 is designed in the manner of a toothed connection and engages in a locking connection with a complementary profile 22 arranged on an inner circumferential surface of the valve housing 2. The profile 22 comprises two locking lugs 23 that engage on circumferentially opposite sides of the profile 21. The locking lugs 23 can advantageously be designed to be elastically deformable. The first locking connection 20 enables a defined rotational alignment of the valve body 3 relative to the valve housing 2, particularly in the flushing position and / or the respective medication position.

[0041] The valve system 1 also has a second locking connection 24 ( Fig. 11) The second locking connection 24 is formed in a lower region of the valve system 1 between the valve body 3 and the valve housing 2 and comprises a profile 25 formed on an outer circumferential surface of the valve housing 2 and a profile 26 formed on an inner circumferential surface of the valve body. Preferably, the second profile 24 is designed such that the valve body 3 can only be rotated in one direction about the axis of rotation.

[0042] The structural and functional design of the first and second detent connections 20, 24, explained with reference to valve system 1, can readily be transferred analogously to the other valve systems 1a to 1f according to the invention. Valve systems 1e and 1f according to the Fig. Sections 25 and 26 each have a second profile 24e, 24f, which is operatively connected to a release element 27e, 27f arranged on the valve body 3e, 3f. The release elements 27e, 27f each comprise two actuating legs 28e, 28f projecting axially from the valve body 3e, 3f. By compressing these actuating legs 28e, 28f, the profile 26e, 26f of the second locking connection 24e, 24f can be elastically expanded via a pivot point D, thus acting in a lever-like manner. This elastic expansion allows the second locking connection 24e, 24f to be released and the valve body 3e, 3f to be rotated relative to the valve housing 2e, 2f.

[0043] The valve system 1a according to the Fig. 12, Fig. 13 to Fig. Valve body 3a 14 also features a first connecting sleeve 29 with a longitudinal bore 30 for fluid-tight reception of a flushing fluid supply line 31. The first connecting sleeve 29 is fixed radially in the supply channel 12a of the valve body 3a at its outer circumference. The inner circumferential surface of the first connecting sleeve 29 encloses a section of the flushing fluid supply line 31, which is designed as a hose. The first connecting sleeve 29 is also fixed at its end face to the valve body 3a and aligned coaxially with its axis of rotation, and is rotatable within the supply channel 12a of the valve body 3a. This arrangement of the first connecting sleeve 29 counteracts unintentional rotation of the valve body 3a due to rotation of the flushing fluid supply line 31, and vice versa.

[0044] Furthermore, a second connecting sleeve 32 with a longitudinal bore 33 is provided for the fluid-tight reception of a valve outlet 34. The outer circumferential surface of the second connecting sleeve 32 is fixed radially in the outlet channel 13a of the valve body 3a. The valve outlet 34, designed in the form of a hose, is inserted into the longitudinal bore 33 of the second connecting sleeve 32 and is thus fixed radially along a section of its hose sheath surface to the inner circumferential surface of the second connecting sleeve 32. The longitudinal bore 33 is fluid-conductingly connected to the passage 11a of the valve body 3a. The second connecting sleeve 32 is fixed to the valve body 3a at its end face and coaxially with the axis of rotation of the valve body 3a. The second connecting sleeve 32 is thus rotatable in the outlet channel 13a.

[0045] Both the first connecting sleeve 29 and the second connecting sleeve 32 each have a cover plate 35 or 36, respectively. These cover plates 35 and 36 are each arranged such that they cover a radial gap 37 or 38 formed between the valve body 3a and the valve housing 2a at their end faces. Alternatively or additionally, the connecting sleeves 29 and 32 can each be fixed to the valve housing 2a in a rotationally fixed manner.

[0046] Valve systems 1b and 1f each provide a first connection sleeve 29b, 29f. The first connection sleeve 29b, 29f each has an extension section 39b, 39f that extends axially over the end face of the valve body 3b, 3f. Similarly, the respective second connection sleeve 32b, 32f is equipped with a lower extension section 40b or 40f.

[0047] In the valve system 1d according to the invention Fig. 22 and Fig. 23 also provides that the valve body 3d has a connecting channel 41. In the based on Fig. As shown in Figure 23, the connecting channel 41 of the valve system 1d is fluid-conducting. Furthermore, the second connecting sleeve 32d has a transverse bore 42 branching radially from the longitudinal bore 33d. The second connecting sleeve 32 is fixed to the valve body 3d coaxially with its axis of rotation and is therefore rotatable relative to it. In the following Fig. In the functional position of valve system 1d shown in Figure 23, the so-called back-priming position, the transverse bore 42 is fluid-conductingly connected to the connecting channel 41. This design of valve system 1d allows backflushing of the drug inlet E1d with rinsing fluid. For this purpose, the valve outlet 19d or a [missing information] is first opened. Fig. The valve outlet 23 (not shown in detail) is closed, for example with a clamp. The rinsing fluid can then flow via the fluid-conducting connection between the supply channel 12d, the rinsing inlet, the rinsing outlet, the rinsing channel K, the connecting channel 41 of the transverse bore 42, the longitudinal bore 33d, the second transfer channel 15d and the passage 11d, through the medication outlet A1d into the medication inlet E1d. The medication inlet E1d can thus be backflushed with rinsing fluid. By rotating the second connecting sleeve 32d towards the valve body 3d, the fluid-conducting connection between the transverse bore 42 and the connecting channel 41 can be broken.According to this, the valve system 1d is in a medication position in which medication fluid can pass through the medication inlet E1d, through the medication outlet A1d, the passage 11d into the second transfer channel 15d and from there through the longitudinal bore 33d to the valve outlet 19d formed by the end face of the second connecting sleeve 32d.

[0048] To ensure improved sealing between the valve body 3f and the valve housing 2f, the valve system 1f according to the invention provides a sealing element 43. The sealing element 43 is arranged radially between the valve body 3f and the valve housing 2f and has an elastomeric material composition.

[0049] The valve system 1e according to the invention Fig. 25 provides for a cover device 44. The cover device 44 is based on Fig. 24 is shown in more detail and has a base body 45 with a through opening 46 for receiving a hose line and a number of cover elements 47 corresponding to the number of drug inlets E1e to E4e, here: four, arranged in a star shape around the base body 45. The through opening 46 is provided with a radial slot 48 so that the cover device 44 can be slid radially over any existing rinsing fluid line of the valve system 1e. The cover elements 47 have semicircular recesses on their end faces, which are provided for receiving drug supply lines that can be connected to the drug inlets E1e to E4e. As shown in Figure 24, the cover elements 45 have a base body 45 with a through opening 46 for receiving a hose line and a number of cover elements 47 corresponding to the number of drug inlets E1e to E4e. Fig. As can be seen in Figure 25, the cover elements 47 are designed and arranged such that manual access to the medication inlets E1e to E4e is restricted. This prevents the medication lines from unintentionally disconnecting from the medication inlets E1e to E4e. The cover elements 47 are each connected to the base body 45 via a fastening element in the form of a film hinge 49 and are pivotable relative to it. Thus, the cover elements 47 can be pivoted upwards via the film hinges 49 to connect medication lines to the respective medication inlets E1e to E4e. After the medication lines have been connected, the cover elements 47 can be pivoted downwards. In the downward-pivoted position, the cover elements 47 are each connected to the base body 45 via a connecting element 50.The connecting elements 50 each have a locking element 51 arranged laterally on the cover element 47 and a locking pocket 52 arranged on the base body 45.

[0050] In contrast to valve systems 1 to 1b, 1d to 1f, valve system 1c looks like this after the Fig. 17, Fig. 18, Fig. 19, Fig. 20 to Fig. 21 A radial offset exists between the inlet channel 12c and the outlet channel 13c. The inlet channel 12c is arranged on the valve body 3c as a sleeve 53 extending axially upwards. Advantageously, the sleeve 53 can be formed integrally with the valve body 3c. To connect the valve body 3c to a flushing fluid supply line (not shown in detail), the sleeve 53 is inserted into the flushing fluid supply line. In this way, a particularly short design of the valve system 1c can be achieved. Advantageously, the flushing fluid supply line can be bonded to the sleeve 53.

Claims

[1] Medical valve system (1 to 1f) for administering at least two drug liquids with - a valve housing (2 to 2f) with at least two drug inlets (E1 to E4) for receiving one of the drug liquids each, which are fluid-conductingly connected to a drug outlet (A1 to A4) arranged on an inner housing circumferential surface (4), - a valve body (3 to 3f) arranged at least partially in the valve housing (2 to 2f), which is rotatable about an axis of rotation relative to the inner housing circumferential surface (4), with an outer body circumferential surface (7) and an inner body surface (9) and a passage (11, 11a, 11c, 11d) arranged on the outer body circumferential surface (7), - a rinsing inlet (10) for receiving a rinsing fluid which is fluid-conductingly connected to a rinsing outlet (8) and - a valve outlet (19, 19a, 19c, 19d) for the discharge of the rinsing fluid and / or at least one of the medication fluids, which is fluid-conductingly connected to the passage (11, 11a, 11c, 11d), - wherein the valve body (3 to 3f) is rotatable in - at least two medication positions in which the passage (11, 11a, 11c, 11d) is connected to one of the medication outlets (A1 to A4) in such a fluid-conducting manner that the respective medication fluid can be conducted through the valve outlet (19, 19a, 19c, 19d), and - at least one flushing position in which the passage (11, 11a, 11c, 11d) is connected to the flushing outlet (8) via a flushing channel (K, Ka, Kd) in such a fluid-conducting manner that the flushing fluid can be conducted through the valve outlet (19, 19a, 19c, 19d) and residues of the first and / or second drug fluid can be flushed from the passage (11, 11a, 11c, 11d) and the valve outlet (19, 19a, 19c, 19d), characterized by, that the flushing inlet (10) and the valve outlet (19, 19a, 19c, 19d) are arranged on the valve body (3 to 3f). [2] Medical valve system (1 to 1f) according to claim 1, characterized by , that the flushing inlet (10) is arranged on the inner body surface (9) of the valve body (3 to 3f) and the flushing outlet (8) is arranged on the outer circumferential surface (7) of the valve body (3 to 3f), so that the flushing fluid can be directed through the valve body (3 to 3f) from the inside to the outside in the flushing position. [3] Medical valve system (1 to 1f) according to claim 1 or 2, characterized by, that the valve body (3 to 3f) has an inlet channel (12, 12a, 12c) which is fluid-conductingly connected to the flushing outlet (8) and extends substantially axially to the axis of rotation of the valve body (3 to 3f), and a discharge channel (13, 13a, 13c) which is fluid-conductingly connected to the passage (11, 11a, 11c, 11d) and the valve outlet (19, 19a, 19c, 19d) and extends substantially axially to the inlet channel (12, 12a, 12c). [4] Medical valve system (1 to 1f) according to claim 3, characterized by, that the flushing outlet (8) is arranged below the passage (11, 11a, 11c, 11d), wherein the valve body (3e to 3f) has a first transfer channel (14 to 14b) which fluidly connects the flushing inlet (10) to the supply channel (12, 12a, 12c), and a second transfer channel (15 to 15b) which fluidly connects the passage (11, 11a, 11c, 11d) to the discharge channel (13, 13a, 13c), and wherein the transfer channels are arranged at least sectionally next to each other in the axial direction of the valve body (3 to 3f). [5] Medical valve system (1, 1a, 1c to 1f) according to claim 4, characterized by , that the first conduit (14, 14a) and the second conduit (15, 15a) extend at least in sections substantially parallel to each other and are separated from each other by a substantially axially extending partition (16, 16a). [6] Medical valve system (1b) according to claim 4, characterized by, that the first conduit (14b) and / or the second conduit (15b) extends obliquely to the axis of rotation. [7] Medical valve system (1 to 1f) according to any one of the preceding claims, characterized by , that the flushing channel (K, Ka, Kd) is formed in an annular shape between the inner housing circumferential surface (4) and the outer body circumferential surface (7). [8] Medical valve system (1 to 1f) according to claim 7, characterized by , that the valve body (3 to 3f) has at least one radial projection (17) which is arranged on the circumferential surface (7) such that at least one flow obstruction is formed in the flushing channel (K, Ka, Kd). [9] Medical valve system (1 to 1f) according to any one of the preceding claims, characterized by a first detent connection (20) between the valve housing (2 to 2f) and the valve body (3 to 3f) for rotatingly fixing the valve body (3 to 3f) to the valve housing (2 to 2f). [10] Medical valve system (1 to 1f) according to any one of the preceding claims, characterized by a second locking connection (24) between the valve housing (2 to 2f) and the valve body (3 to 3f), which is arranged such that the valve body (3 to 3f) can only be rotated in one direction about the axis of rotation. [11] Medical valve system (1 to 1f) according to claim 9 and / or 10, characterized by , that the first and / or second locking connection (20, 24) each has a profile (21, 26) arranged circumferentially on a circumferential surface of the valve body (3 to 3f). [12] Medical valve system (1e, 1f) according to claim 11, characterized by, that the valve body (3e, 3f) has at least one manually operable release element (27e, 27f) which is designed such that the profiling (21, 26) is elastically radially expandable and thus the first and / or second detent connection (20, 24) between the valve body (3e, 3f) and the valve housing (2e, 2f) can be released. [13] Medical valve system (1a, 1b, 1f) according to any one of the preceding claims, characterized by a first connecting sleeve (29, 29b, 29f) with a longitudinal bore (30, 30b, 30f) for fluid-tight reception of a flushing fluid supply line (31), wherein the longitudinal bore (30, 30b, 30f) is fluid-conductingly connected to the flushing inlet (10) and wherein the first connecting sleeve (29, 29b, 29f) is fixed at the end face and coaxially to the axis of rotation on the valve body (3a, 3b, 3f) such that the valve body (3a, 3b, 3f) is rotatable relative to the first connecting sleeve (29, 29b, 29f). [14] Medical valve system (1a to 1d, 1f) according to any one of the preceding claims, characterized by a second connecting sleeve (32, 32b to 32d, 32f) with a longitudinal bore (33, 33b to 33d, 33f) for fluid-tight reception of a valve outlet (34), wherein the longitudinal bore (33, 33b to 33d, 33f) is fluid-conductingly connected to the passage (11) and the second connecting sleeve (32, 32b to 32d, 32f) is fixed at the end face and coaxially to the axis of rotation on the valve body (3a to 3d, 3f) such that the valve body (3a to 3d, 3f) is rotatable relative to the second connecting sleeve (32, 32b to 32d, 32f). [15] Medical valve system (1a) according to claim 13 and / or 14, characterized by , that the first connecting sleeve (29) and / or the second connecting sleeve (32) are / is rotationally fixed to the valve housing (2a). [16] Medical valve system (1a) according to any one of claims 13 to 15, characterized by, that the first and / or the second connecting sleeve (29, 32) each have a cover plate (36, 36) which are arranged such that a radial gap (37, 38) formed between the valve body (3a) and the valve housing (2a) is covered at the end face. [17] Medical valve system (1d) according to claim 14, characterized by , that the valve body (3d) has a connecting channel (41) which is fluid-conductingly connected to the rinsing channel (Kd) in at least one of the drug positions, and that the second connecting sleeve (32d) has a transverse bore (42) extending from the outer circumferential surface of the connecting sleeve (32d) into its longitudinal bore (33d), wherein the second connecting sleeve (32d) is rotatable relative to the valve body (3d) from the respective drug position into a back-priming position in which the transverse bore (42) is fluid-conductingly connected to the connecting channel (41). [18] Medical valve system (1f) according to any one of the preceding claims, characterized by a sealing element (43) arranged between the outer circumferential surface (7) and the inner circumferential surface (4) for sealing a radial gap between the valve body (3f) and the valve housing (2f). [19] Medical valve system (1e) according to any one of the preceding claims, characterized by a cover device (44) arranged on the front side of the valve housing (2e) with a base body (45) having a through opening (46) for receiving a hose line and at least one cover element (47) arranged in the area of ​​at least one of the drug inlets (E1e to E4e) that is designed in such a way as to restrict manual access to the drug inlet (E1e to E4e). [20] Medical valve system (1e) according to claim 19, characterized by, that the cover element (47) has a connecting means (50) which is designed such that a drug supply line can be positively locked to the cover element (47). [21] Medical valve system (1e) according to claim 19 or 20, characterized by , that the cover element (47) is attached to the base body (45) by means of a fastening means (49) so as to be pivotable relative to the base body (45), in particular by means of a film hinge (49).

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