Abstract
A medical fluid control device has a base body and an actuator body. The base body and the actuator body have, respectively, a sliding and sealing surface facing each other and the actuator body is fastened movably to the base body. The actuator body has at least one actuator fluid channel which connects an actuator attachment nozzle directly to an actuator opening in the sliding and sealing surface of the actuator body. The base body has independent first and second base fluid channels, each having a base opening in the sliding and sealing surface of the base body and free of a branching in the base body. The actuator body is movable such that the actuator fluid channel can be brought into a closed or open position in connection with the first or second base fluid channel.
Claims
1-16. (canceled)
17. A medical fluid control device for changing and controlling flows of fluid, the device comprising: a base body and an actuator body which is movable relative to the base body; wherein the base body and the actuator body have, respectively, a sliding and sealing surface facing each other and the actuator body is fastened movably to the base body; wherein the actuator body has at least one actuator fluid channel, at least one actuator attachment nozzle for attaching hoses or syringes, and at least one actuator opening in the sliding and sealing surface of the actuator body, and wherein each actuator fluid channel in each case connects an actuator attachment nozzle directly to an actuator opening in the sliding and sealing surface of the actuator body; wherein the base body has a first base fluid channel and a second base fluid channel with in each case a base attachment nozzle, wherein the first base fluid channel and the second base fluid channel are independent of each other and are not directly fluidically connectable to each other via the actuator body; wherein the first base fluid channel and the second base fluid channel each comprise a base opening in the sliding and sealing surface of the base body and are free of a branching in the base body; and wherein the actuator body is movable in such a way that the at least one actuator fluid channel can selectably be brought into a closed position or can be brought into an open position in connection with the first or the second base fluid channel.
18. The medical fluid control device according to claim 17, wherein the actuator body is rotatable through 360 about an axis of rotation and has a rotationally symmetrical sliding and sealing surface.
19. The medical fluid control device according to claim 17, wherein the first and second base openings are arranged in the sliding and sealing surface at a distance of 180 from one another with the same radius relative to the axis of rotation, so that the at least one actuator opening of the actuator body can be moved from the first to the second base opening with a 180 rotation.
20. The medical fluid control device according to claim 17, wherein the actuator body is in the form of a rotatable disc with a circular sliding and sealing surface, in the form of a circular sleeve with the sliding and sealing surface on the inner side, in the form of a circular cylinder with the sliding and sealing surface on the circumferential surface or in the form of a circular cylinder with the sliding and sealing surface on the end face, and the sliding and sealing surface of the base body is in each case complementary to the sliding and sealing surface of the actuator body.
21. The medical fluid control device according to claim 17, wherein the actuator body is designed in the form of a linearly displaceable plate with the sliding and sealing surface, and the sliding and sealing surface of the base body is designed to be complementary to the sliding and sealing surface of the actuator body.
22. The medical fluid control device according to claim 17, wherein the fluid control device has a plurality of actuators bodies which are movable relative to the base body and which are movably fastened in a plurality of recesses on the base body.
23. The medical fluid control device according to claim 17, wherein the first base fluid channel and/or the second base fluid channel has a second, additional base attachment nozzle, so that at least one base fluid channel forms a continuous base fluid channel in the base body with base attachment nozzles on both sides, irrespective of the position of the actuator body.
24. The medical fluid control device according to claim 23, wherein the continuous base fluid channel is guided so as to break through the sliding and sealing surface of the base body and thereby forms the base opening of the base fluid channel.
25. The medical fluid control device according to claim 17, wherein the base fluid channel has no dead leg irrespective of the position of the actuator.
26. The medical fluid control device according to claim 17, wherein the base fluid channel is open in the region of the sliding and sealing surface of the base body, so that the base opening of the base fluid channel extends along the sliding and sealing surface of the base body.
27. The medical fluid control device according to claim 17, wherein the actuator body has a single actuator fluid channel and the base body has more than two base fluid channels.
28. The medical fluid control device according to claim 17, wherein the base body and the actuator body each have complementary latching means, so that the actuator body can be latched in different positions.
29. The medical fluid control device according to claim 17, wherein at least one base attachment nozzle and the at least one actuator attachment nozzle is designed as a Luer connection.
30. The medical fluid control device according to claim 17, wherein the sliding and sealing surfaces of the actuator body and the base body are in sealing contact with one another.
31. The medical fluid control device according to claim 17, wherein the fluid control device is manufactured as a disposable article made of plastic.
32. The medical fluid control device according to claim 17, wherein the first base fluid channel and/or the second base fluid channel is designed with a pressure measuring device.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0102] The invention will be explained in more detail below by means of embodiment examples in connection with the drawing(s). It shows:
[0103] FIGS. 1A-1D a fluid control device with two disks for quickly changing syringe pumps, under (a) a perspective view of the fluid control device (FIG. 1A), under (b) a sectional view (FIG. 11B), under (c) a perspective view of the base body (FIG. 1C), and under (d) a perspective view of the actuator body (FIG. 1D);
[0104] FIGS. 2A-2C a fluid control device with a block-like base body, under (a) a perspective view of the fluid control device (FIG. 2A), under (b) a perspective view of the actuator body (FIG. 2B), and under (c) a perspective view of the base body (FIG. 2C);
[0105] FIGS. 3A-3B a fluid control device with a continuous base fluid channel and an actuator body with two actuator fluid channels, under (a) a perspective view of the fluid control device (FIG. 3A), under (b) a perspective view of the base body (FIG. 3B);
[0106] FIGS. 4A-4B a fluid control device with a continuous base fluid channel and an actuator body with only one actuator fluid channel, under (a) a perspective view of the fluid control device (FIG. 4A), under (b) a perspective view of the base body (FIG. 4B);
[0107] FIGS. 5A-5C a fluid control device with a linearly displaceable actuator body, under (a) a perspective view of the fluid control device (FIG. 5A), under (b) a perspective view of the actuator body (FIG. 5B), and under (c) a perspective view of the base body (FIG. 5C);
[0108] FIG. 6 a fluid control device as a multi-fold system with several actuator bodies, under (a) a perspective view of the fluid control device;
[0109] FIGS. 7A-7B a fluid control device as a multi-fold system with a drainage chamber, under (a) a perspective view of the fluid control device (FIG. 7A), under (b) a sectional view (FIG. 7B);
[0110] FIGS. 8A-8D a fluid control device as a multi-fold system with circular cylinder-shaped actuator bodies, under (a) a perspective view of the fluid control device (FIG. 8A), under (b) a sectional view (FIG. 8B), under (c) a perspective view of the base body (FIG. 8C), and under (d) a perspective view of the actuator body (FIG. 8D);
[0111] FIGS. 9A-9D a fluid control device as a multi-fold system with a circular cylinder-shaped base body and sleeve-shaped actuator bodies, under (a) a perspective view of the fluid control device (FIG. 9A), under (b) a sectional view (FIG. 9B), under (c) a top view of the base body (FIG. 9C), and under (d) a perspective view of the actuator body (FIG. 9D);
[0112] FIG. 10A-10F a fluid control device as a multi-fold system with a cylindrical base body and laterally recessed cylindrical actuator bodies, under (a) a perspective view (FIG. 10A), under (b) a sectional view through the first base fluid channel (FIG. 10B), under (c) a sectional view through both base fluid channels (FIG. 10C), under (d) a sectional view through the second base fluid channel (FIG. 10D), under (e) a side view of the base body; under (f) a perspective view of the actuator body (FIG. 10E);
[0113] FIGS. 11A-11B a further variant of a fluid control device as a multi-fold system with a cylindrical base body and laterally recessed cylindrical actuator bodies, under (a) a perspective view (FIG. 11A), under (b) a sectional view through both base fluid channels (FIG. 11B);
[0114] FIGS. 12A-12D a fluid control device with more than two base fluid channels and a circular cylinder-shaped actuator body, under (a) a perspective view of the fluid control device (FIG. 12A), under (b) a sectional view (FIG. 12B), under (c) a perspective view of the base body (FIG. 12C), and under (d) a perspective view of the actuator body (FIG. 12D);
[0115] FIG. 13 a perspective view of a fluid control device with more than two base fluid channels and a disk-shaped actuator body;
[0116] FIG. 14 an exploded perspective view of a fluid control device with more than two base fluid channels and a disk-shaped actuator and base body;
[0117] FIGS. 15A-15E a perspective view of an infusion stopper with two disks rotatable relative to each other, under (a) a perspective view of the infusion stopper in an open position (FIG. 15A), under (b) a sectional view (FIG. 15B), under (c) a perspective view of the infusion stopper in a closed position (FIG. 15C), under (d) a perspective view of the base body (FIG. 15D), and under (e) a perspective view of the actuator body (FIG. 15E);
[0118] FIG. 16 a perspective view of a fluid control device with a circular cylinder-shaped actuator body and a sleeve-shaped base body;
[0119] FIGS. 17A-17B a fluid control device as a multi-fold system with a base body consisting of several sleeve-shaped segments and laterally embedded cylindrical actuator bodies, under (a) a perspective view (FIG. 17A), under (b) a side view of the base body (FIG. 17B);
[0120] FIG. 18 a fluid control device with pressure measuring device.
EMBODIMENTS OF THE INVENTION
[0121] The medical fluid control devices described below can be divided into two functional groups: (A) fluid control devices without interruption of an infusion channel when a new inflow port is switched on (FIGS. 3A-3B, 4A-4B, 5A-5C, 6, 7A-7B, 8A-8D, 9a-9D, 10A-10F, 11A-11B, 16, 17A-17B) and (B) fluid control devices with interruption of the infusion channel when the new inflow port is switched on (FIGS. 1A-1D, 2A-2C, 12A-12D, 13, 14).
[0122] FIGS. 1A-1D show an embodiment of the medical fluid control device for changing and controlling fluid flows. FIG. 1A shows a perspective view and FIG. 1B shows a sectional view of the fluid control device. The fluid control device comprises a base body 1 (FIG. 1C) and an actuator body 2 (FIG. 1D), wherein the base body 1 and the actuator body 2 each have a sliding and sealing surface 10, 20 facing each other and the actuator body 2 is held in the base body 1 in a sealing and movable manner. A reverse arrangement is also possible.
[0123] In the embodiment shown, the actuator body 2 is designed as a rotatable disk with a circular sliding and sealing surface 20. Other variants, e.g. a linearly displaceable plate (FIGS. 5A-5C, FIG. 13), a rotatable cylinder (sliding and sealing surface on the lateral surface) (FIG. 8, FIG. 12, FIG. 16), a rotatable cylinder (sliding and sealing surface on the lateral and end surfaces) (FIG. 10, FIG. 11, FIG. 17) or a rotatable sleeve (sliding and sealing surface on the inner surface) (FIG. 9) are also possible and are described in connection with other embodiments in the other figures. The sliding and sealing surface 10 of the base body 1 is correspondingly complementary to the sliding and sealing surface 20 of the actuator body 2. In the embodiment shown, the base body 1 is also designed as a disk with a circumferential edge 14.
[0124] In the embodiment of the fluid control device shown in FIGS. 1A-1D, the actuator body 1 has two separate actuator fluid channels 21, 21, each with an actuator attachment nozzle 22, 22. Both actuator fluid channels 21, 21 each end in an actuator opening 23, 23 in the sliding and sealing surface 20 of the actuator body 2. The actuator fluid channels 21, 21 are independent of each other and cannot be fluidically connected to each other via the base body 1.
[0125] In the embodiment shown, the base body 1 has two separate base fluid channels 11, 11, each with a base attachment nozzle 12, 12. One base opening 13, 13 of each of the two base fluid channels 11, 11 is located in the sliding and sealing surface 10 of the base body 1. The base fluid channels 11, 11 are independent of each other and cannot be fluidically connected to each other via the actuator body 2.
[0126] The actuator body 2 can be rotated about an axis of rotation A running through the center of the circular disc. The actuator attachment nozzles 22, 22 of the actuator body 2 are parallel to the axis of rotation A, and their actuator openings 23, 23 are arranged symmetrically at a distance of 180 around the axis of rotation A. The base attachment nozzles 12, 12 of the base body 1 are also parallel to the axis of rotation A and are arranged with their base openings 13, 13 symmetrically around the axis of rotation A, so that they can be brought into alignment with the actuator openings 23, 23.
[0127] In a first open position (FIG. 1A and FIG. 1B), the first actuator fluid channel 21 is connected to the first base fluid channel 11 and the second actuator fluid channel 21 is connected to the second base fluid channel 11. By rotating the actuator body 2 by 180, the connections of the fluid channels can be changed very quickly, so that the first actuator fluid channel 21 is connected to the second base fluid channel 11 and the second actuator fluid channel 21 is connected to the first base fluid channel 11. A rotation of 90 leads to a closed position in which the respective openings 13, 13, 23, 23 lie directly on the sliding and sealing surface of the counterpart and are closed. There is no dead volume, as is the case with a conventional stopcock, for example.
[0128] On the side of the sliding and sealing surface 10, the base body 1 has a wall 14 surrounding it with a radially inwardly directed projection 15. At the axis of rotation, the base body 1 also has a protruding pin 16 provided with latching means 17. The disk of the actuator body 2 is designed in such a way that it can engage under the projection 15 of the wall 14 and on the latching means 17 of the pin 16 and in this way is held in the base body 1 in a sealing and rotatable manner. Furthermore, the wall 14 of the base body 1 has one or more latching lugs 18 on the inside, for example arranged in 90 steps around the axis of rotation. The actuator body 2 has corresponding latching notches 24 with which the actuator body 2 can latch into the various positions.
[0129] Such a fluid control device is particularly suitable for connecting e.g. syringe pumps to an infusion line and for quickly changing syringe pumps (so-called quick exchange).
[0130] For example, an outgoing infusion line (infusion channel) to a patient can be connected to the first attachment nozzle 12 (connection port) of the base body 1, while the second attachment nozzle 12 is connected to an outgoing drainage line (drainage channel), for example to a collection bag. A supply infusion line, e.g. from an infusion pump, can now be connected to each of the two attachment nozzles 22, 22 of the actuator body 2 (port A and port B).
[0131] For example, an old, soon to be empty syringe pump infusion can infuse into the infusion channel (base fluid channel 11; actuator attachment nozzle 22) via port A (actuator fluid channel 21; base attachment nozzle 12), while the new, full syringe pump infusion infuses into the drainage channel (base fluid channel 11; base attachment nozzle 12) via port B (actuator fluid channel 21; actuator attachment nozzle 22). The drainage channel can either be connected to an aspiration unit or a capacitive collection unit. The drainage access allows the syringe pump line and connection points to be kept free of air and drug residues and, with the manual or automated administration of a fluid bolus from the syringe, the fluid delivery from the syringe pump can be brought up to the desired continuous delivery rate more quickly.
[0132] As soon as the new, full syringe pump infusion is at the desired continuous delivery rate, the two ports with the infusion accesses are changed by rotating the actuator body through 180. The new, full syringe pump infusion is now connected to the infusion channel and the old, soon to be empty syringe pump infusion is connected to the drainage channel, from which it can now be disconnected and prepared for another change.
[0133] FIGS. 2A-2C show a further embodiment of a fluid control device, which is also suitable for a quick exchange. In contrast to the fluid control device shown in FIGS. 1A-1D, the base body 1 is not designed as a disk, but as a block. The two base attachment nozzles 12, 12 are arranged side by side. Accordingly, the two base fluid channels 11, 11 have a right angle. The disk-shaped actuator body 2 is accommodated in a circular recess in the base body 1. The mode of operation of the fluid control device shown in FIG. 2 is the same as that of the fluid control device shown in FIGS. 1A-1D.
[0134] The base opening 13, 13 of the base fluid channel 11, 11 canas shown in FIG. 2(c)extend along the base fluid channel 11, 11 in the sliding and sealing surface 10 and lie open. In this case, the sliding and sealing surface 20 of the actuator body 2 partially forms a wall of the base fluid channel 11, 11. The function of such an exposed base fluid channel 11, 11 is described in detail in the following embodiments. Alternatively, the base fluid channel 11, 11 can be covered by the sliding and sealing surface 10, so that only the round base opening 13, 13, which is complementary to the actuator opening 23, 23, is located in the sliding and sealing surface of the base body 1.
[0135] FIGS. 3A-3B show a further embodiment of a fluid control device, which is also suitable for a quick exchange and also has a block-like base body as in FIGS. 2A-2C. In contrast to the fluid control devices in FIGS. 1A-1D and FIGS. 2A-2C, the fluid control device in FIGS. 3A-3B has a continuous base fluid channel 11, which ends in an additional base attachment nozzle 12a. One of the two base fluid channels 11 correspondingly has two base attachment nozzles 12, 12a. However, the two base fluid channels 11, 11 are also separate from each other and cannot be fluidically connected to each other via the actuator body 2.
[0136] In the case of a base fluid channel 11 with two base attachment nozzles 12, 12a, this continuous base fluid channel 11 breaks through the sliding and sealing surface 10 so that it is open and forms the base opening 13. In the embodiment shown, the base opening extends essentially along the entire sliding and sealing surface 10 of the base body 1 (see FIG. 3B). This ensures that a connected actuator fluid channel 21 opens directly into the continuous base fluid channel 11 and that there is noeven if only a smallside arm of the base fluid channel 11, which forms a dead leg depending on the position of the actuator body. There is therefore no space in the base body 1 in which air or deposits can accumulate. It is also possible to design both base fluid channels (11, 11) as continuous fluid channels.
[0137] FIGS. 4A-4B show a fluid control device which, in contrast to the fluid control device in FIGS. 3A-3B, has an actuator body 2 with only one actuator fluid channel 21 and corresponding actuator attachment nozzle 22 and actuator opening 23. Such a fluid control device is not used for switching between two supply lines, but for dead space-free connection of a supply line or injection from a syringe into a base fluid channel.
[0138] In one application, for example, a new, full syringe pump infusion can be switched into a running infusion through the continuous base fluid channel 11. In this case, the new, full syringe pump is connected to the actuator attachment nozzle 22 of the actuator body. This first infuses via the single port into the non-continuous base fluid channel 11 (drainage channel). The drainage channel can either be connected to a suction unit or a capacitive collection unit. It can also be continuous with two base connection nozzles and be flushed with a flushing solution, for example, i.e. it has an inlet and an outlet connection nozzle (see FIG. 8A). The drainage access allows the syringe pump line and connection points to be kept free of air and drug residues and, with the manual or automated administration of a bolus, the fluid delivery by the syringe pump can be brought to the desired continuous delivery rate more quickly. As soon as the new, full syringe pump infusion is at the desired continuous delivery rate, the actuator fluid channel 21 is moved from the drainage line (base fluid channel 11) to the continuous infusion line (base fluid channel 11) by rotating the actuator body 1 by 180. The new, full syringe pump infusion is now connected to the infusion channel.
[0139] Alternatively, a medication syringe can be connected instead of the syringe pump. The drainage access allows the syringe and connection points to be cleared of air and old fluid and medication residues and the medication in the syringe to be brought to the infusion level without dead space. By rotating the actuator body by 180, the medication syringe is connected to the continuous base fluid channel 11. The syringe is now connected to the infusion line and the medication can be injected. The actuator 1 can then be rotated through 180 again, the medication syringe removed and the fluid channel 21 cleaned by injecting a syringe containing a rinsing solution (e.g. 0.9% NaCl solution) into the drainage channel (any remaining medication is expelled). A further rotation of the actuator body 1 by 90 brings the actuator fluid channel 21 into a closed position.
[0140] FIGS. 5A-5C show a fluid control device which, unlike the previous fluid control devices, is actuated by a linear displacement of the actuator body 2. In the embodiment shown, the actuator body 2 is designed as a displaceable, rectangular plate. The fluid control device shown in FIG. 5 has a single actuator fluid channel 21 with actuator attachment nozzle 22 and actuator opening in the sealing and sliding surface 20. In the variant shown, the actuator attachment nozzle is positioned vertically on the side of the plate opposite the sliding and sealing surface. The movable plate is accommodated in a corresponding recess in the base body 1. The base body 2 has the two base fluid channels 11, 11 with corresponding base attachment nozzles 12, 12, one of which is designed as a continuous base fluid channel 11 with a second base attachment nozzle 12a. As in the preceding embodiments, the continuous base fluid channel 11 is guided to break through the sliding and sealing surface. The base opening 13 of the continuous base fluid channel 11 thus extends in the sliding and sealing surface 10 along the base fluid channel 11 and is partially or completely open. Here too, the base fluid channels 11, 11 do not have any branches or side arms within the base body 1. When the base opening is closed, the continuous base fluid channel 11 is completely flushed. As in the preceding embodiments, the non-through base fluid channel 11 shown in FIG. 5 ends in the base opening 13, which here has a complementary cross-section to the actuator opening 23 of the actuator body 2.
[0141] By moving the plate or the actuator body 2, the actuator fluid channel 21 can be connected to one of the two base fluid channels 11, 11. A closed intermediate position, in which the actuator opening 23 is closed by the sliding and sealing surface 10 of the base body 1, is also possible.
[0142] This fluid control device is also suitable for connecting a syringe pump to an infusion line or for injecting medication from a syringe into an infusion line.
[0143] In one application, for example, a new, full syringe pump infusion can be switched into a running infusion through the continuous base fluid channel 11. In this case, the new, full syringe pump is connected to the actuator attachment nozzle 22 of the actuator body. This first infuses via the single port into the non-continuous base fluid channel 11 (drainage channel). However, this can also be designed as a continuous and correspondingly flushable base fluid channel with two base attachment nozzles. The drainage channel can be connected either to a suction unit or a capacitive collection unit. The drainage access allows the syringe pump line and connection points to be kept free of air and drug residues and, with the manual or automated administration of one or more boluses, to bring the fluid delivery from the syringe pump more quickly to the desired continuous delivery rate. As soon as the new, full syringe pump infusion reaches the desired continuous delivery rate, the actuator fluid channel 21 is moved from the drainage line (base fluid channel 11) to the continuous infusion line (base fluid channel 11) by moving the actuator body 1. The new, full syringe pump infusion is now connected to the infusion channel.
[0144] Alternatively, a medication syringe can be connected instead of the syringe pump. The drainage access makes it possible to free the syringe and connection points from air and old fluid and medication residues and to bring the medication in the syringe to the infusion level without dead space. By moving the actuator body, the medication syringe is connected to the continuous base fluid channel 11. The syringe is now connected to the infusion line and the medication can be injected. Afterwards, the actuator body 2 can be pushed back again, the medication syringe removed and the fluid channel 21 can be cleaned using a newly prepared injection syringe with cleaning solution (e.g. 0.9% NaCl solution) into the drainage channel (remaining medication is expelled). Moving the actuator body 2 into the closed intermediate position brings the actuator fluid channel 21 into a closed position.
[0145] Several of the embodiments described above in FIGS. 1A-1D, 2A-2C, 3A-3B, 4A-4B, and 5A-C can be connected in sequence in an infusion line in order to increase the number of connection options for supply lines. Alternatively, the fluid control device can have a base body 1 with several actuator bodies 2. Such multi-fold systems are described in FIGS. 6, 7A-7B, 8A-8D, 9A-9D, 10A-10F, and 11A-11B.
[0146] In contrast to the embodiment in FIGS. 3A-3B, FIG. 6 shows a multi-fold system of the fluid control device with several disk-like, rotatable actuator bodies 2. These each have one or two separate actuator fluid channels 21, 21, with actuator attachment nozzles 22, 22 and actuator openings 23, 23.
[0147] The multiple actuator bodies 2 are rotatably mounted next to each other in corresponding recesses in the base body 1. The base body 1 has a continuous base fluid channel 11 with a first base attachment nozzle 12 and an additional base attachment nozzle 12a. The continuous base fluid channel 11 has a base opening for each actuator body, via which the respective actuator fluid channels 21, 21 can be connected.
[0148] The respective openings 13, 13, 23, 23 are designed in the same way as in the previously described embodiments with disk-like actuator body 2.
[0149] Furthermore, the base body 1 has a non-continuous base fluid channel 11 which extends along the several control bodies 2 and which can also be connected to the actuator fluid channels 21, 21 via base openings 13.
[0150] Such a fluid control device can be used analogously to the preceding fluid control devices, with the difference that several connection options for supply lines are possible here.
[0151] The embodiment shown in FIGS. 5A-5C can also be constructed as a multi-fold system, in which several actuator bodies 2 are formed in a common base body 1.
[0152] FIGS. 7A-7B show a fluid control device similar to the embodiment in FIG. 6, but which, in contrast, has a chamber-like, non-continuous base fluid channel 11. In FIG. 7A and FIG. 7B, the base attachment nozzle 12, which can be located on the underside or on the side, is not visible. Such a base fluid channel 11 serves as a drainage chamber (see FIG. 7B). The drainage chamber can contain a cassette, possibly with a suction element, which is replaced, or it can have a drain to periodically dispose of the drainage fluid or continuously drain it away.
[0153] Such a fluid control device can be used in the same way as the fluid control devices shown in FIGS. 1A-1D, 2A-2C, 3A-3B, 4A-4B, and 5A-C, with the difference that the multi-fold system allows several connection options for supply lines.
[0154] FIGS. 8A-8D show a further design of the fluid control device as a multi-fold system. In contrast to the variants already described with rotatable disks or a linearly displaceable plate, this variant has a circular cylinder-shaped actuator body 2 and a base body 1 with a corresponding recess. The sliding and sealing surface 20 of the actuator body 2 is formed by its lateral surface. The actuator body 2 has at least one actuator fluid channel 21, 21 with an actuator attachment nozzle 22, 22. In the embodiment shown, the at least one actuator attachment nozzle 22, 22 runs parallel to the axis of rotation A. The at least one actuator fluid channel 21, 21 describes a right angle and the corresponding actuator opening 23, 23 is located in the lateral surface of the cylinder.
[0155] The actuator body 2 is mounted in the complementary recess of the base body 1 so that it can rotate about an axis of rotation A. The inner surface of the recess forms the sliding and sealing surface 10 of the base body 1.
[0156] The base openings 13, 13 of the base fluid channels 11, 11 are preferably arranged in such a way that the connection of an actuator fluid channel 21, 21 between the two base fluid channels 11, 11 can be changed with a 180 rotation of the actuator body 2. In the case of two actuator fluid channels 21, 21, the actuator openings 23, 23 of the actuator body are arranged symmetrically with 180 spacing around the axis of rotation A.
[0157] FIG. 8A shows a multi-fold system with three actuator bodies 2 connected in series. Similar to the fluid control devices in FIGS. 6 and 7A-7B, the base body 1 has two separate base fluid channels 11, 11, each with a base attachment nozzle 12, 12, one of which is continuous with an additional base attachment nozzle 12a. The base openings 13, 13 are each located in the inner surface of the recess or the sliding and sealing surfaces 10 of the base body 1.
[0158] FIG. 8B shows a sectional view through the central actuator body 2 with only one actuator fluid channel 21. While one base opening 13 is in line with the actuator opening 23, the other base opening 13 is closed by the sliding and sealing surface 20 of the actuator body 2. In this embodiment of the fluid control device, the base fluid channels 11, 11 are also separate from each other and cannot be connected to each other by the actuator body 2. In addition, the base fluid channels 11, 11 of this fluid control device also have no branches or side arms within the base body 1. Even when the base opening is closed, the continuous base fluid channel 11 is completely flushed.
[0159] FIG. 8C shows a section of the base body 1 with the base opening 13 in the sliding and sealing surface 10 of the base body 1. FIG. 8D shows the actuator body 2 with the actuator opening 23 in the sliding and sealing surface 20 of the actuator body 2.
[0160] In this, as in the other embodiments, it is possible to provide both base fluid channels 11, 11 as continuous base fluid channels with an additional base attachment nozzle 12a, 12a. Such a fluid control device can be used analogously to the preceding fluid control devices from FIGS. 1A-1D, 2A-2C, 3A-3B, 4A-4B, and 5A-C, with the difference that several connection options for supply lines are possible here.
[0161] Such a device from FIGS. 8A-8D does not necessarily have to be designed as a multi-fold system, but can also be designed as a single fluid control device analogous to FIGS. 1A-1D, 2A-2C, 3A-3B, 4A-4B, and 5A-C.
[0162] An example of such a singular fluid control device with two actuator attachment nozzles 22, 22 is shown in FIG. 16, although a variant with one actuator attachment nozzle is also possible. The fluid control device then has a circular cylindrical actuator body 2 and a sleeve-shaped base body 1. In contrast to the fluid control device shown in FIGS. 8A-8D, in the fluid control device shown in FIG. 16 the actuator attachment nozzles 22, 22 of the actuator body 2 are not arranged parallel to the cylinder axis, but are inclined to the cylinder axis so that the free ends of the actuator attachment nozzles 22, 22 are further apart in order to facilitate the connection of hoses. Such an inclined arrangement of the actuator attachment nozzles is also possible with other fluid control devices described. The base body 1 of the fluid control device in FIG. 16 also has a continuous base fluid channel 11, which ends in an additional base attachment nozzle 12a. One of the two base fluid channels 11 has two base attachment nozzles 12, 12a. However, the two base fluid channels 11, 11 are also separate from each other and cannot be fluidically connected to each other via the actuator body. In the fluid control device shown in FIG. 16, the other base attachment nozzle 11 is arranged in the radial direction of the base body 1, in contrast to a tangential arrangement in the fluid control device shown in FIG. 8A-8D.
[0163] Furthermore, the fluid control device in FIG. 16 can be designed without a continuous base fluid channel 11, i.e. similar to the fluid control devices in FIGS. 1A-1D and 2A-2C. In this case, both base attachment nozzles can be arranged in a radial direction.
[0164] FIGS. 9A-9D show a further embodiment of the fluid control device as a multi-fold system. In contrast to the variants already described, this variant has a circular cylinder-shaped base body 1 and several sleeve-shaped actuator bodies 2 rotating around the base body 1. The longitudinal axis of the cylindrical base body 1 forms an axis of rotation A around which the sleeve-shaped actuator body 2 can be rotated. The sliding and sealing surface 10 of the base body 1 is formed by its lateral surface. The sliding and sealing surface 20 of the actuator body 2 is formed by the inner surface of the sleeve.
[0165] In the embodiment shown, the multiple actuator bodies 1 have an actuator fluid channel 21 with an actuator attachment nozzle 22.
[0166] In the embodiment shown, the actuator attachment nozzle 22 runs perpendicular to the axis of rotation A and its actuator fluid channel 21 can be optionally connected to one of the base fluid channels 11, 11 via the actuator opening 23.
[0167] As in the previous embodiments, the base openings 13, 13 in the sliding and sealing surface 10 extend along the base fluid channels 11, 11, so that these are open. In this way, no branches or side arms are necessary in the base fluid channels, which cannot be flushed or can only be flushed with difficulty when the base opening is closed.
[0168] A circumferential wall 19 of the base body 1 is arranged between the sleeve-shaped actuator bodies 2 to facilitate sealing. This can also have the latching means mentioned in the previous embodiments.
[0169] FIG. 9B shows a sectional view through the first actuator body 2 with only one actuator fluid channel 21. While one base opening 13 is in line with the actuator opening 23, the other base opening 13 is closed by the sliding and sealing surface 20 of the actuator body 2. In this embodiment of the fluid control device, the base fluid channels 11, 11 are also separate from each other and cannot be connected to each other by the actuator body 2. In addition, the base fluid channels 11, 11 of this fluid control device also have no branches or side arms within the base body 1. Even when the base opening is closed, the continuous base fluid channel 11 is completely flushed.
[0170] FIG. 9C shows the base body 1 with the base apertures 13, 13 in the sliding and sealing surface 10 of the base body 1. FIG. 9D shows the actuator body 2 with the actuator opening 23 in the sliding and sealing surface 20 of the actuator body 2, which forms the inner surface of the actuator body 2.
[0171] The base fluid channels 11, 11 can also be arranged symmetrically at a distance of 180 around the axis of rotation A, so that the actuator body 2 can have two diametrically opposed actuator fluid channels 21, 21 or actuator openings 23, 23, which allow a quick change as with the so-called quick exchange.
[0172] The fluid control device in FIGS. 9A-9D can also be realized as a simple variant with only one actuator body.
[0173] Such a fluid control device can be used analogously to the preceding fluid control devices in FIGS. 1A-1D, 2A-2C, 3A-3B, 4A-4B, and 5A-C, with the difference that the multi-fold system allows several connection options for supply lines.
[0174] FIGS. 10A-10F show a further embodiment of the fluid control device as a multi-fold system. In this embodiment, the base body 1 is cylindrical in shape and has several circular cylindrical actuator bodies 2 on its cylindrical circumferential surface, which are sealingly and rotatably embedded in corresponding recesses in the base body 1.
[0175] The base body 1 has two separate base fluid channels 11, 11, which are spaced apart from each other in the axial direction and have a central circular chamber 11a, 11a. A first base fluid channel 11 has two base attachment nozzles 12, 12a, which are arranged laterally on the lateral surface of the cylindrical base body 1. The second base fluid channel 11, which can be used as drainage, has a base attachment nozzle 12, which is arranged on an end face of the cylindrical base body 1 and parallel to a central axis of the cylindrical base body 1.
[0176] The multiple circular-cylindrical actuator bodies 1 have one or two separate actuator fluid channels 21, 21 with respective actuator attachment nozzles 22, 22 and actuator openings 23, 23. By rotating the control elements 2, their actuator openings 23, 23 can be brought into alignment with the base openings 13, 13 of the central chambers 11a, 11a of the base fluid channels 13, 13.
[0177] FIG. 10B shows a sectional view transverse to the central axis and through the first base fluid channel 11. FIG. 10D shows a sectional view transverse to the central axis and through the second base fluid channel 11. FIG. 10C shows along the center axis and through both base fluid channels 11, 11.
[0178] FIG. 10E shows a side view of the base body 1, in which the sliding and sealing surface 10 of the base body 1 and the base openings 13, 13 are visible. FIG. 10F shows a perspective view of the actuator body 2, in which the sliding and sealing surface 20 of the actuator body 2 and the actuator openings 23, 23 are visible.
[0179] In the fluid control device shown in FIGS. 10A-10F, the actuator fluid channels 21, 21 run in a radial direction to the central axis of the base body 1 and can be connected to the central chambers 11a, 11a of the base fluid channels. The central chamber 11a of the first base fluid channel 11 with the two base attachment nozzles 12, 12a can, for example, be flushed by an infusion. Depending on the position of the actuator bodies 2, syringe pumps or ordinary syringes, for example, can be connected to the infusion. The central chamber 11a of the second base fluid channel 11 serves as a collecting basin for the drainage.
[0180] Alternatively, the actuator body 2 can also be tapered so that it tapers towards the sliding and sealing surface 20. In this way, even more actuator bodies 2 can be accommodated in the base body 1 and/or the central chambers 11a, 11a can be made smaller.
[0181] FIGS. 17A-17B show a further embodiment of the fluid control device as a multi-fold systemsimilar to the fluid control device in FIGS. 10A-10F. In the fluid control device in FIGS. 17A-17B, the base body 1 has several sleeve-shaped sections arranged around a central axis, in each of which a circular cylinder-shaped actuator body 2 is accommodated. The actuator bodies 2 can be designed similarly to those already described and have one or two actuator attachment nozzles 22, 22. The base body 1 has two separate base fluid channels 11, 11, each of which forms a central chamber 11a, 11a, which can be fluidically connected to the respective actuator fluid channels 21, 21 of the control elements 2depending on the position of the control element 2. The base attachment nozzles 12, 12a of the continuous first base channel 11 are arranged at an angle of 30 to 60 degrees to the central axis. The base attachment nozzle 12 of the second base channel 11 is arranged parallel to the central axis.
[0182] FIG. 17B shows a side view of the base body 1, in which the sliding and sealing surface 10 of the base body 1 and the base openings 13, 13 can be seen. The first base openings 13 to the continuous first base channel 11 or the chamber of the continuous base channel 11 are larger in this embodiment so that no undercuts are formed towards the chamber, which can lead to problems during injection molding. The chamber of the second base channel 11, which is usually used as a drain, connects its second base openings with the second base attachment nozzle 12. Undercuts are also avoided here.
[0183] FIGS. 11A-11B show a further embodiment of the fluid control device, which differs from the fluid control device in FIGS. 10A-10F in that the second base fluid channel is designed analogously to the first base fluid channel 11 with a central chamber 11a and has a base attachment nozzle 12 arranged laterally on the lateral surface. FIG. 11B shows a sectional view along the central axis and through the base fluid channels 11, 11.
[0184] The fluid control devices in FIGS. 10A-10F and FIGS. 11A-11B can be used in the same way as the preceding fluid control devices in FIGS. 1A-1D, 2A-2C, 3A-3B, 4A-4B, and 5A-C, whereby several connection options for supply lines are possible with the multi-fold system.
[0185] FIGS. 12A-12D, 13, and 14 show various embodiments of a fluid control device in which the actuator body 2 has only one actuator fluid channel 21 with actuator attachment nozzle 22. In contrast to the preceding embodiments with two base fluid channels, however, the base body 1 has more than two base fluid channels 11 with base attachment nozzles 12. The actuator fluid channel 21 can each be connected to one of the several base fluid channels 11.
[0186] Such fluid control devices allow, for example, the aspiration of fluids from the catheter system, which is connected via one of the connecting ports of the base body, and the discharge of the aspirate including air into the drainage channel, which is connected to another connecting port of the base body. A liquid medium can also be aspirated from one of the other connecting pieces (supply ports) and injected into the catheter system. Residual liquids and air in the syringe can be disposed of via the drainage system.
[0187] FIGS. 12A-12D show a variant in which the actuator body 2similar to the embodiment in FIGS. 8A-8Dis designed as a rotatable circular cylinder, the outer surface of which forms the sliding and sealing surface 20 with the actuator opening 23. The base body 2 is correspondingly designed as a sleeve or hollow cylinder and has the complementary sliding and sealing surface 10 with the respective base openings on the inside. Conversely, it is also possible to form the actuator body with an actuator attachment nozzle as a sleeve or hollow cylinder, in which case the base body with the multiple base attachment nozzles forms the inner circular cylinder (similar to the embodiment in FIGS. 9A-9D).
[0188] FIG. 13 shows a variant in which the actuator body 2similar to the embodiment in FIGS. 5A-5Cis designed as a linearly displaceable plate, which is accommodated in the base body 1 in a linearly displaceable manner. The actuator attachment nozzle 22 is arranged on the upper side (i.e. the side facing away from the base body). In the embodiment shown, the base attachment nozzles are arranged laterally. Accordingly, the bend of the fluid channel can be arranged in the actuator fluid channel 21 of the actuator body 2 or in the base fluid channel 11 of the base body 1. In the first case, the plate of the control element 1 is thicker and the sliding and sealing surface with the actuator opening is arranged at the side. In the second case, the sliding and sealing surface is arranged on the underside of the plate. Alternatively, the base attachment nozzles can be arranged on the underside of the base body, i.e. the side facing away from the actuator body, so that there is no bend in the fluid channels.
[0189] FIG. 14 shows a variant similar to the embodiment in FIGS. 1A-1D with two circular disks that can rotate in relation to each other, whereby the base attachment nozzles are arranged at regular intervals around the axis of rotation of the actuator body.
[0190] Finally, FIGS. 15A-15E show an infusion stopper based on the simplest embodiment of a medical fluid control device for changing and controlling fluid flows. FIG. 15A and FIG. 15C each show a perspective view. FIG. 15B shows a sectional view. The fluid control device comprises a base body 1 (FIG. 15D) and an actuator body 2 (FIG. 15E), wherein the base body 1 and the actuator 2 each have a sliding and sealing surface 10, 20 facing each other and the actuator body 2 is held in the base body 1 in a sealing and movable manner. In the embodiment shown, the actuator is designed as a rotatable disk with a circular sliding and sealing surface. Other variants, e.g. a linearly displaceable plate, a rotatable cylinder (sliding and sealing surface on the outer surface) or a rotatable sleeve (sliding and sealing surface on the inner surface) are also possible and are described in connection with other embodiments in the other figures. The sliding and sealing surface of the base body is correspondingly complementary to the sliding and sealing surface of the actuator body.
[0191] In the infusion stopper, the actuator body 1 only has an actuator fluid channel 21 with an actuator attachment nozzle 22. The actuator fluid channel 21 ends in an actuator opening 23 in the sliding and sealing surface 20 of the actuator body 2. The base body 1 also only has a base attachment nozzle 11 with a base fluid channel 11, the base opening 13 of which is located in the sliding and sealing surface 10 of the base body 1. In an open position (FIG. 15A) of the infusion body, the two openings 13, 23 are in line with each other. In a closed position (FIG. 15C), the openings 13, 23 each lie directly on the sliding and sealing surface of the counterpart. There is no dead volume or diameter reduction due to a central rotating element in the lumen, as is the case with a conventional stopcock, for example.
[0192] The infusion stopper allows the regulation (go/stop) of a fluid flow without increasing the flow resistance in the open state, as the diameters of the fluid channels are the same. There is no intermediate channel with a smaller diameter, as is also known from conventional stopcocks. In addition, the infusion stopper makes it easy to see whether the line is closed or open. The infusion stopper can be combined with other fluid control devices in infusion systems and installed upstream and/or downstream. The infusion stopper thus makes it possible to influence the direction of flow of an aspiration or injection into the injection channel.
[0193] The connecting pieces of all embodiments can have a so-called Luer connection. The base attachment nozzles 12 shown on the base body 1 of all embodiments, which have a so-called Luer connection, are used for aspiration or infusion. Only one base attachment nozzle may not have a Luer connection. This is generally used as a drainage channel or waste channel and is easily recognizable in this way. The positioning attachment nozzles shown also have a Luer connection.
[0194] FIG. 18 shows an example of a fluid control device with a first pressure measuring device 30 on the first base fluid channel 11 and a second pressure measuring device on the second base fluid channel 11.
[0195] All embodiments can be regarded as independent inventions. Individual features, even if described in connection with specific embodiments, can also be combined with other embodiments.
REFERENCE SIGNS
[0196] 1 base body [0197] 10 sliding and sealing surface [0198] 11, 11 fluid channel of base body (base fluid channel) [0199] 11a, 11a central chamber [0200] 12, 12 attachment nozzle of the base body (base attachment nozzle) [0201] 12a additional base attachment nozzle [0202] 13, 13 opening in the sliding and sealing surface of the base body (base opening) [0203] 14 surrounding wall [0204] 15 projection [0205] 16 pin [0206] 17 latching means [0207] 18 latching lug [0208] 19 surrounding wall [0209] 2, 2, 2 actuator body [0210] 20 sliding and sealing surface of the actuator body [0211] 21, 21 fluid channel of the actuator body (actuator fluid channel) [0212] 22, 22 attachment nozzle of the actuator body (actuator attachment nozzle) [0213] 23, 23 opening in the sliding and sealing surface of the actuator body (actuator opening) [0214] 24 latching notch [0215] 30 pressure measuring device
