Connector for a milk extrusion device

Abstract

The present disclosure relates to a connection for a milk extrusion device, and also to a combination structure having: an extrusion kit (35) for extruding milk from a mammal breast, the extrusion kit (35) configured for placement on the mammal breast to extrude milk, and configured to be coupled to a connection (1) configured to be coupled to a negative pressure source (105); and a connector (1), characterized in that the composite structure is configured for coupling the extrusion kit (35) and the connector (1) in an orientation selected from a plurality of discrete orientations excluding two discrete orientations.

Description

Technical Field

[0001] The present invention relates to a connection piece of an expression kit for expressing milk from a mammal's breast, the connection piece being configured to be connected to a negative pressure source. The present invention also relates to an expression kit and an expression system, both for use with the connection piece. Background Art

[0002] Such a connector, an extrusion kit and an extrusion system are known, for example, from WO 2021191637 A1.

[0003] WO2021191637A1 discloses a breast pump system for expressing milk from a human female breast, the system comprising at least one wearable milk expression kit connected to a combined external air pump and a control unit via a tube. Each milk expression kit comprises: (a) a breast shield consisting of a breast flange and a nipple channel; (b) a flexible diaphragm configured to prevent milk from reaching an external air pump; (c) a housing configured to be removably attached to the breast shield so that the breast shield and the housing form a container for collecting milk when attached; and (d) a diaphragm cap configured to be fixed above the diaphragm, forming a part of the front of the housing, and including a port connected to the tube. The tube is redirected from the port to pass through a passage located at the center of the diaphragm cap. This is done to adapt the milk expression kit to the inside of the user's bra. WO2021191637A1 also discloses that, in the terminology used in WO2021191637A1, the septum cap is omnidirectional and can be rotated against the housing to adjust the position of the port on the housing, and thereby adjust the position and direction of the tube.

[0004] A disadvantage of the breast pump system disclosed in WO2021191637A1 is that the mechanism that allows the diaphragm cap to rotate against the housing is relatively expensive and is made of several parts. The mechanism should also not allow negative pressure to escape into the environment. Another disadvantage is that the diaphragm cap may not be able to maintain its desired orientation relative to the housing, for example because the user may move around when using the breast pump system, causing the diaphragm cap to rotate against the housing. Another disadvantage is that the redirection of the tube disclosed in WO2021191637A1 may cause kinks in the tube, thereby negatively affecting the fluid connection between the external air pump and the extrusion kit. Summary of the invention

[0005] It is an object of the present invention to provide an expression system which is improved compared to known breast pump systems.

[0006] According to the present invention, this object is achieved in the following manner: the connector or the extrusion kit or both are configured so that: the connector and the extrusion kit can be connected to each other so that the connector can have an orientation selected from a plurality of discrete orientations relative to the housing of the extrusion kit. In some embodiments, the plurality of discrete orientations includes 3, 4, 5, 6, 7, 8, 9 or 10 discrete orientations.

[0007] The present invention is based on the recognition that known breast pump systems can be simplified if the connecting piece can assume a plurality of discrete positions relative to the housing of the squeeze kit, rather than being omnidirectional as in the diaphragm cap in WO2021191637A1.

[0008] According to one example, the connector includes a connector shape configured to provide discrete orientations in which the connector and the extrusion kit can be coupled to each other.

[0009] An additional benefit of this example is that it provides a convenient way to enable multiple discrete positions. Making the connector include a connector shape and making the extrusion kit include a corresponding kit shape allows multiple discrete positions to be provided in a plug-socket manner. For example, the connector shape includes the shape of the portion of the connector that is inserted into the internal volume of the extrusion kit. For example, the connector shape includes the shape of the portion of the connector that completes the outer contour of the extrusion kit, that is, once the connector and the extrusion kit are connected to each other, the shape is flush with the housing of the extrusion kit. As described above, the connector shape can be the shape of the connector or the shape of a portion of the connector. The term "connector shape" not only includes the shape of the body contained in the connector, but can also alternatively or additionally include, for example, the arrangement of the connection interface configured to connect the connector and the extrusion kit to each other relative to each other. For example, two protrusions on opposite sides of the circular periphery of the disc-shaped connector can be matched with two matching recesses in the receiving member (for receiving the connector) contained in the extrusion kit. Although the connector is disc-shaped, that is, it is round in one plane, and can therefore be rotated at any angle in the plane, providing discrete elements provides a discrete orientation of the connector relative to the extrusion kit. Similarly, three protrusions around a circular perimeter cooperate with matching recesses on the extrusion kit to provide three discrete orientations for the connector. Such a set of three protrusions will define a triangle between them, thereby producing a triangular connector shape. If the three protrusions are equally spaced along the circular perimeter, an equilateral triangle is defined. A pair of protrusions (for example, located on opposite sides of the perimeter of the connector) can also cooperate with multiple pairs of matching recesses (pairs defined by recesses on opposite sides of the perimeter of the opening that matches the connector) to obtain more than two possible discrete orientations for the connector. Of course, it is not necessary for the protrusions to be located on the connector and the recesses to be located on the extrusion kit. It is also possible to use protrusions on the extrusion kit and matching recesses on the connector. In addition, other matching shapes or elements other than protrusions and recesses can also be used, as long as the connector and the extrusion kit can be connected to each other (if they cannot be connected to each other, they cannot be matched; for example, flexible finger-like elements can be used, and the flexible finger-like elements can extend from the connector or the extrusion kit into the matching openings in the extrusion kit or the connector, respectively).

[0010] According to one example, the connector shape includes a non-circular shape.

[0011] An additional benefit of this example is that having a non-circular shape is a convenient way to provide a connector shape. For example, the non-circular connector shape is an ellipse. For example, the non-circular connector shape is a polygon. For example, the polygonal connector shape is a triangle, rectangle, square, diamond, pentagon or hexagon. Among them, the non-circular shape can be the shape of the body included in the connector. For example, the connector includes a hexagonal body, which will be inserted into a receiving member, which is included in a corresponding extrusion kit, wherein the receiving member has a kit shape that matches the shape of the connector. The non-circular shape can be the shape of the connection interface included in the connector. For example, five protrusions equally spaced along the circular periphery of the disc-shaped connector will define a pentagon therebetween.

[0012] According to one example, a connector includes a wall portion including a port for connecting the connector to a tube for transmitting negative pressure to the connector, wherein the wall portion defines a portion of an outer contour of the extrusion sleeve when the connector and the extrusion sleeve are connected to each other, wherein the port defines a direction, and wherein the direction is not perpendicular to the wall portion.

[0013] The wall portion may include an opening, and the port may be accessible through the opening. For example, the port may be located in the wall portion. For example, the port may extend from the wall portion. This example has the additional benefit that the tube connected to the port does not need to be turned 90° to fit within the shape of the inside of the fitting bra. WO2021191637A1 requires such a 90° turn of the tube.

[0014] This example has the additional benefit that changing the orientation of the wall portion will change the orientation of the port. This is particularly true for changes in the orientation of the wall portion along an axis perpendicular to the wall portion. This example provides an easy way to change the direction of a tube connected to a port. If the port is perpendicular to the wall portion, rotating the wall portion about an axis perpendicular to the wall portion will not change the orientation of the port (unless the wall portion is curved and the port is not located on the axis of rotation, because subsequent rotation will change both the position and spatial orientation of the port; therefore, a connector with a curved wall portion and a port perpendicular to the curved wall portion can be used to allow the user to change the position, orientation, or position and orientation of the port relative to the extrusion kit).

[0015] According to one example, the connector is configured such that changing the orientation of the connector in the extrusion kit from one orientation to a different orientation defines an axis of rotation, and the port is not located on the axis.

[0016] The benefit of this example is that changing the orientation of the connector in the extrusion kit will change the position of the port relative to the extrusion kit. This helps manage the tubes connected to the port. For example, if the port is positioned along one side of the wall portion, such as when the port is located at or near the midpoint of one side, or if the port is located at the corner of the wall portion (such as at the corner of a triangular, square, diamond, pentagonal or hexagonal wall portion), changing the orientation of the connector relative to its extrusion kit will change the position of the port relative to the extrusion kit. If the port defines a direction that is not perpendicular to the outer contour, changing the orientation of the wall portion will not only change the position of the port, but also change the orientation of the port. This also helps the user manage the pipe fittings.

[0017] According to one example, the connecting element is made of a single piece.

[0018] This example has the added benefit of being easy to manufacture. It requires no assembly.

[0019] The object of the present invention is also achieved by an extrusion kit comprising the above-mentioned connecting piece.

[0020] According to one example, the extrusion sleeve comprises a receiving piece for receiving the connector, wherein the receiving piece comprises a sleeve shape matching a shape of the connector.

[0021] This example has the additional benefit of providing a convenient way to enable multiple discrete positions. Having the connector have a connector shape and having the extrusion kit have a corresponding kit shape allows multiple discrete positions to be provided in a plug-and-socket manner. For example, the connector shape includes the shape of the portion of the connector that is inserted into the internal volume of the extrusion kit, and the kit shape matches the connector shape. For example, the connector shape includes the shape of a portion of the connector that is flush with the housing of the extrusion kit once the connector and the extrusion kit are connected to each other, and the kit shape matches the connector shape. For example, the connector shape relates to the relative position of the interface on the connector for connecting the connector to the extrusion kit, and the kit shape relates to the relative position of the interface on the extrusion kit for connecting the extrusion kit to a connector having a matching connector shape.

[0022] According to one example, the squeeze kit is configured to be coupled to the connector such that, after coupling, the connector is positioned away from a breast of a user during use.

[0023] This example has the additional benefit that the connector and tube do not interfere with the user's view of the surface of the extrusion kit that faces the user during use. Generally, if the extrusion kit is configured to be coupled to the connector so that after coupling, the connector is located in a position that is not in the user's field of view when the user is viewing the extrusion kit during use, the connector does not obstruct the user's field of view. For example, the connector can be located in a position facing away from the user's torso during use. For example, the connector can be located in a position facing in the direction of the other breast of a human female user. For example, the connector can be located in a position facing away from the other breast of a human female user.

[0024] According to one example, an extrusion kit including a connector is configured such that: during use, the connector at least partially defines a pumping volume defining a volume for receiving negative pressure from a negative pressure source when the connector is coupled to the negative pressure source.

[0025] This example has the added benefit that once the connector is decoupled from the rest of the extrusion kit, the user may access one or more portions of the extrusion kit for cleaning.

[0026] According to an example, the squeeze kit is configured to fit inside a bra.

[0027] This example has the additional benefit of providing a convenient form factor so that the squeeze-out kit can be worn inside a bra. This form factor is aesthetically pleasing and, by enabling use inside a bra, provides a degree of mobility to the user, allowing the user to move around while using the squeeze-out kit.

[0028] The object of the present invention is also achieved by an extrusion system comprising the above extrusion kit. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] These and other aspects of the present invention will be further elucidated and described with reference to the accompanying drawings, in which:

[0030] Figure 1 An example of a connection according to the invention is schematically shown.

[0031] Figure 2 Other examples of connecting elements according to the invention are schematically shown.

[0032] Figure 3 An example of an extrusion kit according to the invention and a further example of a connecting piece according to the invention are schematically shown.

[0033] Figure 4 Another example of an extrusion kit according to the invention is schematically shown.

[0034] Figure 5An example of an extrusion system according to the invention is schematically shown.

[0035] Figure 6 An example of how to obtain the shape of a receiving piece for receiving a mating part contained in a connecting piece or an extrusion kit is schematically shown. The figures also show possible relative arrangements of interfaces for coupling the connecting piece and the extrusion kit to each other. DETAILED DESCRIPTION

[0036] Figure 1 An example of a connection according to the invention is schematically shown. Figure 1 Column A in FIG. 1 schematically shows an example of a connector 1 comprising a port 5 protruding from a wall portion 10. The port 5 allows the connector 1 to be coupled to a pipe ( Figure 1 ), so as to connect the connector 1 fluid to the negative pressure source ( Figure 1 not shown). Figure 1 The ports 5 shown in the figures of columns B and C of FIG. 1 serve the same purpose. In the upper figure of the two figures of column A, the port 5 protrudes perpendicularly from the wall portion 10. The direction in which the port 5 extends from the wall portion 10 forms an angle of 90° with the wall portion 10. In the lower figure of the two figures of column A, the port 5 does not protrude perpendicularly from the wall portion 10. The direction in which the port 5 extends from the wall portion 10 forms an angle not equal to 90° with the wall portion 10. In the two figures of column A, the port 5 includes a plug.

[0037] Figure 1 Column B in FIG. 1 schematically shows an example of a connector 1 which is contained in the body of the connector 1 and does not protrude from the wall portion 10. In the upper of the two figures in column B, the port 5 extends perpendicularly relative to the wall portion 10. The extension direction of the port 5 forms an angle of 90° relative to the wall portion 10. In the lower of the two figures in column B, the port 5 does not extend perpendicularly relative to the wall portion 10. The extension direction of the port 5 forms an angle not equal to 90° relative to the wall portion 10. In both figures in column B, the port 5 comprises a hole.

[0038] Figure 1Column C in FIG. 1 schematically shows an example of a connector 1 including a recess 15 in a wall portion 10, wherein a port 5 is positioned within the recess 15. In the example of column C, the recess 15 is defined by an opening in the wall portion 10, a side wall 20, and a base surface parallel to the wall portion 10 in the example shown. In the figure of column C, the recess 15 includes a rectangular opening in the wall portion 10. However, in other examples, the recess 15 includes an opening of other shapes, such as a circle, an ellipse, or a triangle. In the upper figure of column C, the port 5 extends in a direction perpendicular to the wall portion 10. The direction in which the port 5 extends is at an angle of 90° relative to the wall portion 10. In the middle figure of column C, the port 5 extends in a direction not perpendicular to the wall portion 10. In the middle figure of column C, the port 5 does not extend perpendicularly relative to the wall portion 10. The direction in which the port 5 extends is at an angle not equal to 90° relative to the wall portion 10. In the lower figure of column C, the port 5 extends from the side wall 20. In the example shown, the port 5 extends perpendicularly from the side wall 20. It will be clear that in another example, the port 5 may extend non-perpendicularly from the side wall 20. In all of the figures in column C, the port 5 comprises a plug. However, it will be clear that the port 5 in column C may alternatively comprise holes extending into the substrate surface or side wall 20. These holes may extend in a direction perpendicular or non-perpendicular to the substrate surface or side wall 20. In the figures in column C, the port 5 does not extend beyond the plane defined by the wall portion 10. However, it will be clear that in an alternative example, the port 5 may extend from the recess 15 beyond the plane defined by the wall portion 10.

[0039] exist Figure 1 In all connectors 1 include a port 5 extending from or within a rectangular shaped body. In combination with an extrusion kit including a receiver for receiving such connector 1, the connector 1 can be coupled to the extrusion kit in four discrete orientations. It will be clear that a rectangular shape (including a square shape) is not the only shape that provides such multiple discrete orientations. In addition to Figure 1 In other examples than the illustrated example, the body of the connector 1 has a polygonal shape, such as a triangle, a rhombus, a pentagon or a hexagon.

[0040] exist Figure 1 In the embodiment, the wall portion 10 is flat. However, in addition to Figure 1 In other examples than those shown, the wall portion 10 is curved (i.e. at least the surface which is the outer surface is curved during use), for example to complete the curved outer surface of the extrusion kit. In this case, it must be assessed locally at the location of the port whether the port extends perpendicularly or not perpendicularly relative to the wall portion 10. If the port extends from the base surface of the recess or from the side wall of the recess, it must be assessed locally at the location of the port whether the port extends perpendicularly or not perpendicularly relative to the base surface or the side wall.

[0041] Figure 2 Other examples of connecting elements according to the invention are schematically shown. Figure 2 Both figures show schematically a front view of a connector 1. The connector 1 comprises a port 5 extending from a side wall in a recess 15. In both figures, the port 5 extends from or within a square-shaped body. Figure 1 The example in column C of the figure below is similar. However, although Figure 1 The recess 15 shown in the figure below in column C has a rectangular opening, but Figure 2 The recess 15 in the figure has a circular opening.

[0042] Figure 1 The example shown in column C of the figure below is Figure 2 The example shown differs in that: Figure 1 In the example of FIG. 1 , the port 5 is located perpendicular to the central axis of the wall portion 10 or near the central axis. Figure 2 In the example of, the port 5 is positioned away from the axis relative to the central axis 25 perpendicular to the wall portion 10. As already explained with respect to one, Figure 2 The square body of the connector 1 provides four discrete orientations in which the connector 1 can be received in corresponding receiving members included in the extrusion kit. The four discrete orientations are obtained by rotating the connector 1 about the axis 25. Figure 2 The position of port 5 is not on axis 25, so rotating connector 1 along axis 25 will change the position of port 5 relative to the extrusion kit (in which connector 1 is housed) (if port 5 extends vertically from the body of connector 1 or extends vertically within the body of connector 1) or the position and orientation of port 5 (if port 5 does not extend vertically from the body of connector 1 or does not extend vertically within the body of connector 1).

[0043] exist Figure 2 In Figure A, port 5 is located at a corner of the square body of connector 1. Alternatively, port 5 is located along one side of the square body of connector 1. In the example given in Figure B, port 5 is located at the midpoint of one side of the body of connector 1. As already described with respect to Figure 1 As discussed, the body of the connector 1 may have a polygonal shape, such as a triangle, rhombus, pentagon or hexagonal shape. Likewise, for such a non-square polygonal body, the port 5 may be positioned at a corner of the body or along the side of the body. The port 5 on a body having a non-polygonal shape (such as an elliptical shape) may similarly be positioned away from the central axis along the side of the body, or positioned at or near the end of the minor or major axis.

[0044] according to Figure 2From the discussion of FIG. 1 , it will be clear that if it is desired that rotation of the body along the central axis changes the position or location and orientation of the port 5 relative to the extrusion kit in which the connector is received, then Figure 1 Each port 5 discussed may be positioned away from the Figure 1 The central axis of the body of the connecting element 1 in question.

[0045] Figure 3 An example of an extrusion kit according to the invention and a further example of a connecting piece according to the invention are schematically shown. Figure 3 FIG. A schematically shows a connector 1, comprising a portion 30, the portion 30 comprising a port 5 located in a recess 15, the configuration of the port 5 being similar to Figure 2 The structure shown in Figure A of is similar. Portion 30 includes a square connector shape. Connector 1 also includes a cylindrical portion 33. Due to the square connector shape and the receiving member 40 on the extrusion kit 35, the receiving member 40 has a square kit shape that matches the square connector shape, and connector 1 can be connected to the extrusion kit 35 in four different discrete orientations. As shown by the double-headed circular arrow, these four orientations are obtained by rotating connector 1. Since port 5 is not perpendicular to wall portion 10, when the orientation of connector 1 changes from one orientation to another, the position and orientation of port 5 are changed. Being able to change the position or position and orientation of port 5 allows the user to manage the position or position and orientation of the pipe fitting accordingly, which can be connected to port 5 to connect port 5 fluid to a negative pressure source. In this way, the user can select a preferred structure. In the example shown, after the connection of connector (1) and extrusion kit (35), surface 10 is flush with the adjacent outer surface of the extrusion kit. It will be clear that this is not necessary.

[0046] Figure 3Figure B schematically shows a connector 1, including a circular portion, which includes a port 5 that does not extend perpendicularly from the wall portion 10. The connector 1 also includes a portion 30 having a triangular connector shape. Due to the triangular connector shape and the receiving member 45 on the extrusion kit 35, which has a triangular kit shape that matches the triangular connector shape, the connector 1 can be connected to the extrusion kit 35 in three different discrete orientations. As shown by the double-headed circular arrow, these three orientations are obtained by rotating the connector 1. Since the port 5 is not perpendicular to the wall portion 10, when the orientation of the connector 1 changes from one orientation to another, the position and orientation of the port 5 are changed. Being able to change the position or position and orientation of the port 5 allows the user to manage the position or position and orientation of the pipe fitting accordingly, which can be connected to the port 5 to connect the port 5 fluid to the negative pressure source. In this way, the user can select a preferred configuration. In the example shown, after the connection of the connector (1) and the extrusion kit (35), the surface 10 is flush with the adjacent outer surface of the extrusion kit. It will be clear that this is not necessary.

[0047] exist Figure 3 In the embodiment, the connector 1 includes a portion having a connector shape, which enables a plurality of discrete orientations of the connector 1 relative to the extrusion set 35 when the connector 1 and the extrusion set 35 are coupled to each other. The connector shape includes not only Figure 3 The square portion 30 or Figure 3 The entire body shape of the triangular portion 30 in Figure B, and the structure of the interface included in the body. For example, assuming Figure 3The portion 30 in the figure A of the embodiment of the present invention does not have a square shape, but has a circular shape, the diameter of which is the same as the circular portion shown in the figure A (in this case, the entire connector looks like a cylinder), or the diameter of which is larger than the cylindrical portion shown in the figure A (in this case, the connector will look like two cylinders with different diameters connected in series). In this case, multiple discrete orientations can be achieved, for example, by providing one or more protrusions and / or recesses at predetermined positions along the periphery of either or both cylindrical portions. One or more protrusions and / or recesses will cooperate with matching features contained in the corresponding extrusion kit. The features on the connector and the matching features on the extrusion kit will form an interface, thereby providing the connector with multiple discrete orientations relative to the extrusion kit when the connector and the extrusion kit are connected to each other. The positions of these features on the connector or the extrusion kit relative to each other will define the connector shape and the kit shape, respectively. For example, three protrusions equally spaced along the periphery of one of the cylindrical portions and three matching recesses in the corresponding extrusion kit will provide the connector with three different discrete orientations relative to the extrusion kit. The projection on the connector will define the connector shape (triangle), and the recess on the extrusion kit will define the kit shape (triangle). If necessary and when necessary, this arrangement may require a release mechanism to decouple the connector from the extrusion kit. This release mechanism may include a projection or recess located on a flexible element, and the flexible element can be bent to release the projection and recess from each other. When the projection and recess are not aligned, this flexible element also allows the connector and its corresponding extrusion kit to move relative to each other. For example, when the projection and recess are not aligned, the flexible element including the projection can be bent in one direction, and when the projection and recess are aligned, the flexible element can relax and snap into place in the opposite direction. Subsequently, this flexibility can also provide a biasing force that keeps the projection in the recess, as long as the biasing force is not overcome by an external force (e.g., a force applied when a user wants to decouple the connector and the extrusion kit).

[0048] Figure 3 Figure C schematically shows a connector as described in the previous paragraph. Connector 1 is shaped as a cylinder as a whole. Port 5 is positioned away from the central longitudinal axis of the cylinder. Port 5 is included in recess 15. In this example, port 5 extends from the side wall 20 of recess 15, and recess 15 is included in wall portion 10. Connector 1 includes a plurality of flexible elements 50, which are shaped as rectangular parts here and are connected to the rest of connector 1 only at one side thereof. Flexible element 50 includes a protrusion 55 toward its free end. Such a protrusion (or alternatively, a notch) is not necessary. Flexible elements (with or without protrusions or notches) can also be configured to have a biasing member extending outward from the rest of the connector.

[0049] Figure 3FIG. D schematically shows the portion 60 included in the extrusion kit 35 and the flexible element 50 (eg, Figure 3 60 ). In the upper part of FIG. D, when the connector 1 and the extrusion set 35 are coupled to each other, the protrusion 55 extends into the recess 65. In the lower part of FIG. D, the protrusion 55 and the recess 65 are not aligned, and the protrusion 55 contacts the flat wall of the portion 60. Therefore, the flexible element 50 is bent, as shown by the angle α opposite the dotted line. This situation occurs when the connector 1 is placed in the extrusion set 1 or removed from the extrusion set.

[0050] In Figures C and D, the flexible element 50 extends in the longitudinal direction of the connector 1. However, it is also possible to envision a flexible element with a circumferential extension similar to the flexible element 50. When the connector is not connected to the corresponding extrusion kit, such a flexible element can be biased so that its free end extends outward from the periphery of the connector. The extended free end will form a sawtooth pattern similar to the shape of a toothed blade of an electric saw. If the connector is connected to the corresponding extrusion kit, then when the connector is inserted into the extrusion kit, the flexible element will intersect with the notch in the surface of the extrusion kit facing the connector. The notch can have a sawtooth pattern and match the free end extending from the connector. Here, "can have a sawtooth pattern" is said because although the notch with a sawtooth shape can be well matched with the flexible element that also forms a sawtooth pattern, it is important that the notch and the flexible element cooperate with each other. Precise matching may be good, but it is usually not necessary. Rotating the connector in the extrusion kit in one direction will alternately fix and release the connector. During the rotation of the connector in this direction, if its flexible element is tightly fitted in the notch with a sawtooth shape, the connector will be fixed in place. If the connector is further rotated in the direction in which the amplitude of the notch (i.e., the depth of the notch) is reduced (by overcoming the force of the free end in the notch), the free end of the flexible element will be forced to move toward the rest of the connector. Once the free end of the flexible element is aligned with the next notch again, the free end of the flexible element moves away from the rest of the connector and fits tightly in the notch again. Then, the free end will be aligned with the notch near the notch that was matched with the free end before further rotation. If the connector is rotated in the opposite direction, the free end of the flexible element will hit the surface at the deeper end of the notch with a sawtooth shape (i.e., the free end will extend into the surface at the wider end of the sawtooth notch). Therefore, further rotation in the latter direction will be prevented.

[0051] Notches and protrusions (e.g., notches and / or protrusions on a flexible element (such as the flexible element discussed above)) can be used to keep any connector according to the present invention connected to the extrusion kit. For example, Figure 1Any connector in the can include a flexible element having a free end located in two opposite side surfaces (i.e., two of the surfaces perpendicular to the wall portion 10). The free end may include one or more protrusions or notches to cooperate with the matching features in the corresponding extrusion kit. In a direction perpendicular to the wall portion 10, such a flexible element may extend from its free end to the opposite end (at the opposite end, it is connected to the rest of its connector). When the connector including the free end is inserted into the extrusion kit, the free end may be arranged to enter the extrusion kit first. This arrangement will allow the user to squeeze the free end toward the rest of the connector to insert the connector into the extrusion kit. Once aligned with the matching features in the extrusion kit (e.g., notches with a sawtooth shape), the free end will relax and fit tightly into the matching features, which may be extended from the rest of the connector. Pulling the connector will cause the free end to be pushed toward the rest of the connector again, thereby releasing the connector from the extrusion kit. This locking release mechanism is similar to the BIC TM The mechanism used to extend and retract the writing tip in the M10 pen. However, one difference is that, unlike the BIC TM The operation of the M10 pen is reversed, in that the free end of the flexible element of the connector cannot be pressed while the connector is in the extrusion kit. However, the connector may include an actuator, such as a button, coupled to the free end to force the free end to move toward the rest of its connector, thereby allowing the connector to be removed from its extrusion kit. Removing the connector from its extrusion kit allows cleaning of the connector and the extrusion kit or at least a portion thereof.

[0052] In addition to the connector 1, Figure 3 Figures A and B in further illustrate the extrusion kits 35. Both extrusion kits 35 include a receiving member (40, 45) configured to receive the corresponding connector 1, specifically, to receive the portion 30 (of the connector 1) including the connector shape. Figure 3 The receiving member 40 in Figure A is configured to receive the square portion 30 of the corresponding connecting member 1. This is why the receiving member 40 has a square kit shape. Figure 3 The receiving member 45 in the B figure is configured to receive the triangular portion 30 of the corresponding connecting member 1. This is why the receiving member 45 has a triangular sleeve shape.

[0053] Given some symmetry about the connector, such as Figure 3 The four-fold symmetry of the connector shape of connector 1 in FIG. A allows more than four discrete orientations of connector 1 to be obtained using appropriate receivers on the extrusion kit. Figure 3If the receiving member 40 in FIG. A is not a square, but rather resembles two concentric, equal-sized squares rotated relative to one another, additional discrete orientations for the connector 1 will become available without requiring any changes to the connector 1. In this example, the angle of rotation between the two imaginary squares defining the receiving member may result in the final shape of the receiving member being symmetrical. For example, rotating the two imaginary squares by an angle of 45° relative to one another will produce eight equally spaced possible discrete orientations for the connector 1. Rotating by an angle other than 45° (but not 90°, since by 90° the two imaginary squares would coincide, thereby producing Figure 3 The example already shown in FIG. A of FIG. 1 will also provide eight possible discrete orientations for the connector 1. However, these discrete orientations will not be equally spaced around the axis of rotation. The two squares are not necessarily concentric. It is also possible to use two squares of the same size that overlap but are not concentric and rotated relative to each other. See also Figure 6 and its description.

[0054] The same method can also be applied to Figure 3 The connector 1 in Figure B has three-fold symmetry. Figure 3 If the receiving member 40 in FIG. B is not formed as a triangle, but is formed to resemble two triangles of the same size that are rotated relative to each other and may be concentric, more than three possible discrete orientations for the connector 1 can be obtained. The receiving member 40 obtained by this method has the outline of a Star of David, providing six possible discrete orientations for the connector. However, just like the imaginary square, the imaginary triangles can be rotated relative to each other at any angle as long as they do not overlap. For the connector, six possible discrete orientations will also be obtained, but these discrete orientations will not be equally spaced around the axis of rotation. As with the above square, the two triangles are not necessarily concentric. Two triangles of the same size that overlap but are not concentric and rotated relative to each other can also be used. The above method is Figure 6 Shown in. Figure 6 The upper left figure of FIG schematically shows two concentric and overlapping triangles (one drawn with a solid line and one drawn with a dashed line) defining the outer contour of the Star of David form. Figure 6 is shown in the upper right figure. Figure 6 The lower left figure schematically shows two concentric and overlapping squares (one drawn with a solid line and one with a dotted line). Figure 6 The lower right figure schematically shows two non-concentric but still overlapping squares.

[0055] exist Figure 3In the embodiment of the present invention, the receiving members 40 and 45 having the shape of the kit are shown as openings, while the portion 30 having the shape of the connector is shown as a protrusion. It will be clear that these arrangements can be reversed so that the extrusion kit includes a protrusion and the connector includes an opening. In view of the foregoing paragraphs, this also means that according to the present invention, an opening can be provided on the connector to provide an additional discrete orientation. For example, the extrusion kit can have an elongated rectangular protrusion as the kit shape, and the matching connector has a connector shape in the form of a cross-shaped opening, wherein each arm of the cross is configured to receive the protrusion of the extrusion kit. The arms of the cross can be perpendicular to each other. In another example, the arms of the cross are at non-right angles to each other. In the latter example, the cross is tilted. Generally, a smaller plug (e.g., an elongated rectangle) can be provided and assembled in a larger socket, wherein the socket is larger in the sense that the shape of the socket is generated by rotating two identical plugs relative to each other (i.e., the socket has a cross shape or an oblique cross shape generated by rotating two elongated rectangles of the same size relative to each other). The two identical plugs do not need to be arranged concentrically. Either one of the plug and the socket can be included in the connector, while the other of the plug and the socket is included in the extrusion kit.

[0056] As mentioned above, the connector shape and the kit shape are not limited to the shape of the entire body, but also include the configuration of the interface contained in the body. Therefore, the above description of obtaining additional possible orientations also applies to such interfaces. For example, Figure 3 A connector such as the connector 1 in Figure C of may include two flexible elements 50. The two flexible elements 50 may be arranged on opposite sides of the connector 1. In order to obtain additional possible discrete orientations, the number of elements on the corresponding extrusion kit that match the flexible element 50 is not two, but four. The four matching elements are arranged in two pairs, each of which is matched with a pair of flexible elements 50 on the connector 1. In this way, in the case of two flexible elements on the connector 1, the possible orientations of the connector are not two, but four. This is similar to the setting method of a plug having an elongated rectangular shape (having two relatively short or long sides) and a matching socket formed into two identical elongated rectangular shapes (the elongated rectangular shape of the matching plug) rotated relative to each other. The socket will then present two pairs of short sides or long sides. In short, the content about obtaining additional orientations applies to both the shape of the entire body and the interface construction. It does not matter in which direction the interface extends. It has been discussed above that in Figure 3 In FIG. C of FIG. 1 , the flexible element 50 extends longitudinally or circumferentially on the connector 1. Regardless of the direction of extension, the above-mentioned method of obtaining additional possible orientations is applicable. For example, two flexible elements can be extended from four (i.e., two pairs) zigzag notches on the connector and the corresponding extrusion sleeve.

[0057] It should also be noted that other different shapes may also provide the same amount of symmetry and thus provide possible discrete orientations for connectors according to the present invention. For example, a square connector shape provides four-fold symmetry. However, a cross connector shape may also provide four-fold symmetry. Similarly, Figure 3 The triangular shape of the connector shown in Figure B provides three-fold symmetry. Three columns arranged along an equilateral triangle can also provide three-fold symmetry. The connector and the corresponding extrusion kit according to the present invention form a plug-socket system, wherein the plug and the socket can have any shape as long as they match. In order to avoid any misunderstanding, the fact that the plug and the socket match includes a method of generating additional symmetry as described above.

[0058] Figure 3 Figures A and B of show that the connector 1 can include portions configured to achieve multiple discrete orientations (portions 30 having square and triangular connector shapes, respectively) and portions not used for this purpose (round portions of the connector 1). Either portion can complete the outer surface of the extruded kit coupled to the connector 1. Similarly, Figure 3 Figures A and B of show that the extrusion kit 35 can include a receiver (for receiving the connector 1) configured to enable multiple discrete orientations of the connector 1 and an element (circular opening 45) that is not used for this purpose.

[0059] Figure 3 Figures A and B of the drawings also show that the port 5 can extend from a portion having a body of a different shape (square in Figure A and circular in Figure B) (Figure A), or extend within a portion having a body of a different shape (Figure B). In Figure A, the port 5 extends vertically from the side wall of the recess 15 in the wall portion 10, while being positioned away from the central axis of the square portion 30 of the connector 1. In Figure B, the port 5 extends non-vertically from the wall portion 10, while being positioned away from the central axis of the circular portion of the connector 1. However, the fact that the port can extend vertically or non-vertically from a portion having a body of a different shape or within a portion having a body of a different shape has been discussed. Figure 1 and Figure 2 The fact that the ports can be located on the central axis or away from the central axis has been discussed in detail. Figure 2 A discussion was held.

[0060] Figure 3 Figures A and B of show the extrusion kit 35 without being coupled to the connector 1. This illustrates that the extrusion kit 35 and the connector 1 form a so-called "plug-and-socket" system, wherein the extrusion kit 35 cooperates with the connector 1 so that the connector 1 can be coupled to the extrusion kit 35 in a plurality of discrete orientations relative to the extrusion kit 35.

[0061] It will be clear that in order to express milk from a mammalian breast (e.g., a human female breast), it is necessary to combine the expression kit 35 and the connector 1. For simplicity, the combined structure of the expression kit 35 (i.e., the expression kit without the connector) and the connector 1 will be referred to as "an expression kit including a connector".

[0062] Figure 3 Figures A and B of Figure 3 show that at least a portion of the connector 1 can be used to complete the outer surface of the extrusion kit 35. Figure 3 After the extrusion set 35 and the connection piece 1 in Figures A and B are connected, the wall portion 10 of the connection piece 1 completes the outer surface of the extrusion set including the connection piece. Figure 1 As mentioned, the wall portion 10 may be flat or curved.

[0063] Figure 4 Another example of an extrusion kit including a connecting piece according to the invention is schematically shown. Figure 4 A cross section is shown taken along a vertical plane through an extrusion kit 35 including a connector 1. Here, the vertical direction is defined as the up-down direction during normal use of the extrusion kit, when the user is standing or sitting in an upright position. The extrusion kit 35 includes a connector 1. In this example, the wall portion 10 is flat and completes the otherwise curved outer surface of the extrusion kit 35. In this example, the port 5 is positioned away from the central axis of the connector 1 and does not extend vertically from the wall portion 10. The extrusion kit 35 includes a breast volume 70 for receiving a breast 75. The extrusion kit 35 also includes a pumping volume 80. The pumping volume 80 can be fluidly connected to a negative pressure source ( Figure 4 The pumping volume 80 is at least partially defined by the connecting piece 1. Figure 4 In the embodiment of the present invention, the pumping volume 80 is partially defined by a membrane 85, which separates the breast volume 70 from the pumping volume 80. The membrane 85 is flexible. When the pressure in the pumping volume 80 changes, the membrane 85 deforms, thereby changing the pressure in the breast volume 70. The negative pressure generated in the breast volume 70 causes suction to be generated on the breast 75, thereby facilitating the expression of milk from the breast 75. In some embodiments, any connector according to the present invention is configured to hold the membrane. This arrangement allows easy assembly and cleaning.

[0064] exist Figure 4 In the example shown, the expression set 35 also includes a milk volume 90 for collecting expressed milk. The breast volume 70 in the milk volume 90 is connected via a one-way valve 95. The one-way valve 95 allows milk from the breast volume 70 to enter the milk volume 90, but prevents milk from flowing back from the milk volume 90 to the breast volume 70.

[0065] Figure 5An example of an extrusion system according to the invention is schematically shown. Figure 5 Extrusion system 100 is shown. Extrusion system 100 has an extrusion kit 35 including a connector 1 and a negative pressure source 105. Negative pressure source 105 may include a pump. The pump may be electrically operated or may be manually operated. The manually operated pump may include a rod that can be actuated to generate negative pressure. Negative pressure source 105 is fluidly coupled to port 5 via tubing 110.

[0066] The port 5 is included in the connector 1. In the example shown, the wall portion 10 of the connector 1 has a curved triangular shape. The wall portion 10 completes the curved profile of the extrusion kit 35 including the connector 1. The port 5 is located at one corner of the curved triangle. As explained above, in alternative examples, the port 5 is located along the side of the curved triangle. As explained above, in other examples, Figure 5 The triangles in can be other shapes. In addition, as Figure 3 As discussed in FIG. B of FIG. 3 , the wall portion 10 need not be included in the portion of the connector 1 that is configured to achieve multiple discrete orientations of the connector 1 relative to the extrusion set 35. Figure 5 In the embodiment, the port 5 is located in the recess 15. As mentioned above, in other examples, the port 5 is not located in the recess, but extends from the body of the part of the connector 1 or in the body of the part.

[0067] Figure 5 The extrusion system 100 has a single extrusion kit 35 including a connector 1. In another example, the extrusion system has two or more extrusion kits 35 each including a connector 1. If the extrusion system 100 has two or more extrusion kits 35 each including a connector 1, one or more negative pressure sources may be used. For example, a single negative pressure source may be used to generate negative pressure in two extrusion kits.

[0068] exist Figure 5 In the embodiment shown in FIG. 1 , the connector 1 is positioned so that the wall portion 10 faces away from the human female user during milk expression. This position prevents the connector 1 from obstructing the user's field of vision. If the connector is located in the area indicated by the arrow of reference numeral 35, the connector may obstruct the user's field of vision during milk expression.

[0069] As an example, Figure 5 as well as Figure 3 and Figure 4 The expression kit 35 (with or without the connector 1) is shown configured to fit inside a bra. The above exception kits provide additional comfort and maneuverability compared to more traditional expression kits that include a funnel for receiving the breast (where the funnel is coupled to a bottle to collect expressed milk).

[0070] Example:

[0071] 1. A connector (1) for use in an expression kit (35) for expressing milk from a mammalian breast, wherein the connector (1) is configured to be connected to a negative pressure source (105),

[0072] It is characterized in that

[0073] The connector (1) is configured to be coupled to the extrusion kit (35) in an orientation selected from a plurality of discrete orientations.

[0074] 2. A connector (1) according to any one of Example 1, wherein the connector (1) includes a connector shape, which is configured to provide a discrete orientation, in which the connector (1) can be connected to the extrusion kit (35).

[0075] 3. The connector (1) according to embodiment 2, wherein the connector shape comprises a non-circular shape.

[0076] 4. The connector (1) according to any one of Embodiment 3, wherein the shape of the connector is selected from the group consisting of: triangle, rectangle, square, rhombus, pentagon, hexagon.

[0077] 5. A connector (1) according to any one of embodiments 2 to 4, wherein the shape of the connector is defined by an interface for connecting the connector (1) and the extrusion sleeve (35) to each other.

[0078] 6. A connector (1) according to any one of embodiments 1 to 5, wherein the connector (1) includes a wall portion, the wall portion includes a port (5), the port is used to connect the connector (1) to a tube for transmitting negative pressure to the connector (1), wherein when the connector (1) and the extrusion kit are connected to each other, the wall portion defines a portion of the outer contour of the extrusion kit, wherein the port (5) defines a direction, and wherein the direction is not perpendicular to the outer contour.

[0079] 7. A connector (1) according to any one of embodiments 1 to 6, wherein the connector (1) is configured such that: changing the orientation of the connector (1) in the extrusion kit from one orientation to a different orientation defines a rotation axis, and the port (5) is not located on the axis.

[0080] 8. The connector (1) according to any one of embodiments 1 to 7, wherein the connector (1) is composed of a single piece.

[0081] 9. An expression kit (35) for expressing milk from a mammalian breast, the expression kit (35) being configured to be placed on the mammalian breast to express milk,

[0082] It is characterized in that

[0083] The extrusion kit (35) is configured to be coupled to a connector (1) according to any one of embodiments 1 to 8.

[0084] 10. An extrusion kit (35) according to Example 9, with reference to the connector (1) according to any one of Examples 2 to 5, wherein the extrusion kit (35) includes a receiving member for receiving the connector (1), wherein the receiving member includes a kit shape that matches the shape of the connector.

[0085] 11. An extrusion kit (35) according to any one of embodiments 9 to 10, wherein the extrusion kit (35) is configured to be connected to the connector (1) so that after the connection, during use, the connector is located away from the user's breast.

[0086] 12. An extrusion kit (35) according to any one of embodiments 9 to 11, wherein the extrusion kit (35) includes a connector (1) according to any one of embodiments 1 to 8.

[0087] 13. An extrusion kit (35) according to embodiment 12, wherein the extrusion kit (35) includes the connector (1), and the connector (1) is configured so that: during use, the connector (1) at least partially defines a pumping volume (80), and the pumping volume (80) defines a volume for receiving negative pressure from the negative pressure source (105) when the connector (1) is connected to the negative pressure source (105).

[0088] 14. The extrusion kit (35) according to any one of embodiments 9 to 13, wherein the extrusion kit (35) is configured to fit inside a bra.

[0089] 15. An expression system (100) for expressing milk from a mammalian breast, comprising an expression kit (35) according to any one of embodiments 9 to 14.

Claims

1. A combined structure having: An expression kit (35) for expressing milk from a mammalian breast, the expression kit (35) being configured to be placed on the mammalian breast to express milk and being configured to be coupled to a connector (1), the connector (1) being configured to be coupled to a negative pressure source (105), and The connecting member (1) It is characterized in that The combined structure is configured to couple the extrusion kit (35) and the connector (1) to each other in an orientation selected from a plurality of discrete orientations excluding two discrete orientations.

2. The combined structure according to claim 1, wherein: During use, the connection piece (1) at least partially defines a pumping volume (80), which defines a volume for receiving negative pressure from the negative pressure source (105) when the connection piece (1) is connected to the negative pressure source (105).

3. An extrusion kit (35) for use in a combined structure according to any one of claims 1 to 2, wherein: The extrusion sleeve (35) comprises a receiving piece for receiving the connector (1), and wherein the receiving piece comprises a sleeve shape matching the connector shape of the connector (1).

4. The extrusion kit (35) according to claim 3, wherein: The kit shape includes a non-circular shape.

5. The extrusion kit (35) according to claim 4, wherein: The kit shape is selected from the group consisting of: triangle, rectangle, square, diamond, pentagon, hexagon.

6. The extrusion kit (35) according to any one of claims 3 to 5, wherein: The sleeve shape is defined by an interface for coupling the extrusion sleeve (35) and the connector (1) to each other.

7. The extrusion kit (35) according to any one of claims 3 to 6, wherein: The extrusion kit (35) is configured to be coupled to the connector (1) such that, after coupling, the connector is located out of the user's field of vision when the user observes the extrusion kit (35) during use of the extrusion kit.

8. The extrusion kit (35) according to any one of claims 3 to 7, wherein: The extrusion kit (35) is configured to fit inside a bra.

9. The extrusion kit (35) according to claim 3, wherein: The receiving member has a shape resulting from an overlapping orientation of the combined connecting member shapes.

10. A connection piece (1) for use in an expression kit (35) for expressing milk from a mammalian breast, wherein the connection piece (1) is configured to be connected to a negative pressure source (105), It is characterized in that The connector (1) is configured to be coupled to the extrusion assembly (35) in an orientation selected from a plurality of discrete orientations, Wherein, the connector (1) includes a connector shape, which is configured to provide a discrete orientation in which the connector (1) can be connected to the extrusion kit (35), wherein the connector shape includes a non-circular shape, wherein the connector shape is selected from the group consisting of the following shapes: triangle, square, pentagon, hexagon.

11. The connector (1) according to claim 10, wherein: The connector shape is defined by an interface for coupling the connector (1) and the extrusion sleeve (35) to each other.

12. The connecting piece (1) according to any one of claims 10 to 11, wherein: The connector (1) comprises a wall portion, the wall portion comprising a port (5), the port being used to connect the connector (1) to a tube for transmitting negative pressure to the connector (1), wherein, when the connector (1) and the extrusion sleeve are connected to each other, the wall portion defines a portion of the outer contour of the extrusion sleeve, wherein the port (5) defines a direction, and wherein the direction is not perpendicular to the outer contour.

13. The connecting piece (1) according to any one of claims 10 to 12, wherein: The connector (1) is configured such that changing the orientation of the connector (1) in the extrusion kit from one orientation to a different orientation defines an axis of rotation, and the port (5) is not located on this axis.

14. The connecting piece (1) according to any one of claims 10 to 13, wherein: The connecting piece (1) is made of a single piece.

15. An expression system (100) for expressing milk from a mammalian breast, comprising an expression kit (35) according to any one of claims 3 to 9.

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