Breast Shield and Breast Shield Unit

Abstract

A breast shield including a housing defining a nipple tunnel and adapted to receive a nipple, wherein the housing is provided with a milk port in communication with the nipple tunnel and a vacuum port in communication with the nipple tunnel. For allowing a tender accommodation of the human breast during the expression of milk the invention proposes an insert arranged within the housing and between the nipple tunnel and the milk port and/or the vacuum port. The breast shield unit for expressing human breast milk includes a unit housing with a receptacle adapted to detachably receive a breast shield, wherein the receptacle includes a vacuum interface for generating a negative pressure in the nipple tunnel and a milk interface leading to a milk container adapted to store the expressed human breast milk and wherein in an inserted stage, in which the breast shield is received within the receptacle, the vacuum port is in communication with the vacuum interface and the milk port is in communication with the milk interface

Claims

1. A breast shield comprising a housing defining a nipple tunnel and adapted to receive a nipple, wherein the housing is provided with a milk port in communication with the nipple tunnel and a vacuum port in communication with the nipple tunnel, and an insert arranged within the housing and between the nipple tunnel and the milk port and/or the vacuum port.

2. The breast shield according to claim 1, the insert provided to at least partially extend over at a longitudinal extension (E) of the milk port and/or the vacuum port.

3. The breast shield according to claim 1, and at least one of the milk port or the vacuum port extends in radial direction of the nipple tunnel.

4. The breast shield according to claim 1, the nipple tunnel having an open end section and a closed end section opposite to the open end section.

5. The breast shield according to claim 1, the housing defining a flange segment shaped to fit against a breast and a nipple tunnel segment defining the nipple tunnel.

6. The breast shield according to claim 1, the insert being formed by a unitary body comprising a nipple tunnel insert segment received within the nipple tunnel and a flange insert segment shaped to fit against the breast.

7. The breast shield according to claim 1, and a substantially transparent material forming at least one of the insert or the housing.

8. The breast shield according to claim 1, and the insert is detachably mounted to the housing.

9. The breast shield according to claim 1 further comprising a sealing arranged between the insert and the housing.

10. The breast shield according to claim 1, the insert having a rigid section extending in circumferential direction, which rigid section is provided at least one of between the nipple tunnel and the milk port or between the nipple tunnel and the vacuum port.

11. The breast shield according to claim 10, and at least a flange insert segment of the insert is received within a flange segment formed by the housing.

12. The breast shield according to claim 1, wherein a nipple tunnel segment of the housing and a nipple tunnel insert segment of the insert are arranged coaxially.

13. The breast shield according to claim 1, wherein a support section defining a diaphragm support adapted to detachably hold a diaphragm and to define a pumping chamber, which pumping chamber is in in communication with the vacuum port.

14. A breast shield unit for expressing human breast milk comprising a unit housing with a receptacle adapted to detachably receive a breast shield according to claim 1, wherein the receptacle comprises a vacuum interface for generating a negative pressure in the nipple tunnel and a milk interface leading to a milk container (50) adapted to store the expressed human breast milk and wherein in an inserted stage, in which the breast shield is received within the receptacle, the vacuum port is in communication with the vacuum interface and the milk port is in communication with the milk interface.

Description

[0024] Further details and advantages of the present invention will become apparent from the following description of embodiments of the present invention in combination with the drawings. The drawings show

[0025] FIG. 1 a longitudinal cross-sectional view of a first embodiment of a breast shield according to the present invention;

[0026] FIG. 2 a perspective exploded view of a breast shield unit of the present invention;

[0027] FIG. 3 a rear view of the breast shield unit according to FIG. 2;

[0028] FIG. 4 a longitudinal cross-sectional view according to FIG. 1 for an alternative embodiment of the breast shield

[0029] FIG. 5 a schematic longitudinal cross-sectional view according of the embodiment according to FIG. 4 contained in a breast shield unit

[0030] FIG. 6 a rear view of a further embodiment of a breast shield unit;

[0031] FIG. 7 the representation according to FIG. 6 with a partially removed unit housing shell and

[0032] FIG. 8 an exploded perspective side view of the essential components of the breast shield unit according to FIGS. 6 and 7.

[0033] FIG. 1 shows examples of a breast shield 2 comprising a housing 4, which provides the outer portion of the breast shield 2 and an insert 6 received within the housing 4. The housing 4 has a flange segment 8 and a nipple tunnel segment 10. Between the transition of the flange segment 8 and the nipple segment 10, i.e. at an inner end of the flange segment 8, there is provided a gasket or sealing 12, which sealing 12 projects the inner circumferential surface defined by the nipple tunnel segment 10. The flange segment 8 is shaped to fit against a breast, whereas the nipple tunnel segment 10 is shaped to define a nipple tunnel 14.

[0034] Within the nipple tunnel 14 and between an inner circumferential surface defined by the nipple tunnel segment 10 and the nipple tunnel 14, there is provided a nipple tunnel insert segment 16, which forms part of the insert 6. The insert 6 furthermore has a flange insert segment 18 shaped to fit against the breast. Both segments 16, 18 are provided by a unitary body defining the insert 6. As derivable from FIG. 1, the insert 6 is received within the housing 4. An annular gap 20 is provided between the nipple tunnel insert 16 and the inner circumferential surface defined by the nipple tunnel segment 10. At an open end section 22 of the nipple tunnel 14, this annular gap 20 is sealed by the sealing 12. Between said sealing 12 and a closed end 24 of the nipple tunnel 14 i.e. the nipple tunnel segment 10, this nipple tunnel segment 10 projects over a milk port 26 and a vacuum port 28.

[0035] Those ports 26, 28 extend in radial direction of the nipple tunnel 14. As evident from FIG. 1, the nipple tunnel insert segment fully covers a longitudinal extension E of the milk port and the vacuum port, which longitudinal extension E is indicated in hashed lines. The longitudinal extensions E are the axial extension of walls defining a bores defining the milk port 26 and the vacuum port 28, respectively.

[0036] The nipple tunnel insert segment 16 is an essentially cylindrical member. The same applies to the nipple tunnel segment 10. The nipple tunnel insert segment 16 and the nipple tunnel 10 are usually arranged coaxially. As the ports 26, 28 are fully covered by the insert 6, the nipple will not come into direct contact with the rim of the bore defining the milk port 26 or the vacuum port 28. Thus, a wound on the sensitive nipple due to sharp edges e.g. made by drilling the port 26 or 28 can by all means be avoided.

[0037] The sealing 12 in the present embodiment is fixed to the housing 4. The insert 6 is releasably held within the housing 4. At a level of the sealing 12, the material forming the insert 6 is rather rigid to provide for a reliable seal between the insert 6 and the housing 4. In the present embodiment, the nipple tunnel insert segment 16 is made of a rigid plastic material in order to stabilize the annular gap 20 to allow movement of the sucked air through the vacuum port 28 and of the expressed milk 26 and through this annular gap 20.

[0038] The flange insert segment 18, however, may be formed of a rather flexible material to provide optimum comfort for the breast contacting the flange insert segment and for obtaining reliable vacuum-tight sealing between the inner circumferential surface of the flange insert segment 18 and the breast. The flange insert segment 18 can be supported by the flange segment 8 to assume a shape adapted to fit against the breast. Accordingly, and for the embodiment of FIG. 1, the flange segment 8 does not come into direct contact with the breast.

[0039] In FIG. 1, reference numeral 30 identifies a support section defining a diaphragm support adapted to detachably hold a diaphragm 32. This support section 30 defines a pumping chamber 34 between the diaphragm 32 and the vacuum port 28 for the air received in the nipple tunnel 14.

[0040] The embodiment of FIG. 1 can as such be inserted into a unit housing of a breast shield unit which will be discussed in further detail by referring to FIGS. 2 and 3. The housing 4 of the breast shield 2 may be secured to such unit housing frictionally and/or with a positive fit between the housing 4 and a unit housing 40. Specifically, the connection between the housing 4 and the unit housing 40 may be different than the frictional engagement between the insert 6 and the inner circumferential surface of the housing 4 of the breast shield 2. Nevertheless, the housing 4 as well as the insert 6 are preferably releasable from the unit housing of the breast shield unit.

[0041] On the front side directed to the human breast and identified with reference numeral 42, the unit housing 40 provides a receptacle 44 adapted to receive at least partially the breast shield 2 as specified above. The receptacle 44 is adapted to receive the nipple tunnel segment 10 of the housing 4. Respective receptacle 44 has a vacuum interface 46 and a milk interface 48. When the breast shield 2 is inserted into the receptacle 44, the milk interface 48 is in communication with the milk port 26. The unit housing 40 furthermore defines a vacuum interface 46 within a pumping chamber 36 for the working fluid, which pumping chamber is closed by the diaphragm 32. The diaphragm 32 is sealingly held against the surface of the unit housing.

[0042] In the embodiment of FIG. 1, the breast shield 2 as such has a housing 4 which is insertable into the receptacle 44. Further, the insert 6 as such can be inserted into the housing 4. The insert 6 is releasably received within the housing 4.

[0043] As further derivable from the enclosed Figure, the milk port 26 leads to a milk container 50. This milk container 50 may be provided with a seal which defines the milk interface 48. The milk container 50 is releasably coupled to the unit housing 40.

[0044] In the embodiment of FIG. 1, the housing 4 has a flange segment 8 which is shaped in order to fit against a breast. Direct contact between the breast and the breast shield 2 in this embodiment is made by the flange insert segment 18 of the insert 6. This flange insert segment 18 may be provided by a soft elastomeric material, which is held in shape and, thus, supported by the flange segment 8. The flange segment 8 in this embodiment is made of a rigid material.

[0045] In an alternative embodiment according to FIG. 4 the nipple tunnel insert segment 16 is slightly shorter than the insert segment 16 of FIG. 1. Thus, the insert only partially extends over the milk port 26. In other words, an open inner end of the nipple tunnel insert segment 16 lies within the hashed lines defining the longitudinal extension E of the milk port 26.

[0046] In this embodiment, the housing 4 is essentially reduced to the nipple tunnel segment 10. The forward open end 22 of the nipple tunnel 14 is provided with the sealing 12. As in the embodiment of FIG. 1, the opposite end 24 is closed.

[0047] In the embodiment of FIG. 5, the housing 4 is received within the unit housing 40. While the insert 6 is inserted into the unit housing 40 from the front side 42, the housing 4 is inserted from the other side. The housing 4 projects over the unit housing 40. This constitution gives additional length to the nipple tunnel 14. The sealing 12 is provided at the forward end of the housing 4. Both, the housing 4 and the insert 6 can be removed from the housing unit 40.

[0048] The unit housing 40 defines a housing receptacle 52, which is open from a rear side, which housing receptacle 52 terminates with a stop 54 formed by the unit housing 40. Level with this stop 54, the sealing 12 is provided at an inner circumference of the housing 4. As in the previously discussed embodiment of FIG. 1, the insert 6 is sealed against the housing 4 at this point. The insert 6 is inserted into the unit housing 40 from a side opposite to the insertion side of the housing 4.

[0049] As previously discussed, the flange insert segment 18 may be made of a soft elastomeric material, which in the embodiment of FIG. 5 is held in shape by a flange support surface 58 of the unit housing 40 defining the receptacle 44.

[0050] In the schematic representation according to FIG. 5, reference numeral 60 denotes a pump, which communicates with the vacuum interface 46. This pump 60 is energized by an accumulator 62 and controlled by a control 64, both being received within the unit housing 40.

[0051] FIGS. 6 through 8 show an alternative embodiment of a breast shield unit. Previously discussed elements, which have the same functionality and/or constitution as the previously discussed are identified with identical reference numbers. This embodiment is a variant of the embodiment discussed in WO 2013/010286, which is incorporated herein by reference.

[0052] The unit housing 40 of the respective embodiment has a unit housing ring 66, providing the flange support surface 58. The unit housing ring 66 defines an opening 68 which is larger than the outer diameter of the diaphragm 32 and first and second support elements 70, 72 encompassing the diaphragm 32 for defining the pumping chamber for the air 34 and the pumping chamber for the working fluid 36. The unit formed by joining the first and second support elements 70, 72 with the diaphragm 32 inter disposed may be releasably held within the unit housing 40. Respective unit has an inner opening 74 adapted to receive the housing 4.

[0053] In the embodiment of FIGS. 6 through 8, all elements of the previously discussed breast shield 2 are not shown in detail. The milk port 26 is provided at an outer circumference of the housing 4 near a free end i.e. the closed end section 24 of the nipple tunnel segment 10. In height direction, the vacuum port 28 is arranged opposite thereto and remote from the closed end section 24 of the nipple tunnel segment 10. In the assembled state, the vacuum port 28 is in communication with the vacuum interface 46 provided by a cylindrical segment of the second support element 72, whereas the milk port 26 sealingly abuts a milk valve 76 made of an elastomeric material, which milk valve 76 is releasably attached to the milk container 50 and corporates with the outer circumferential surface of the nipple tunnel segment 10.

[0054] As evident from FIGS. 6 and 7, the housing unit 40 comprises a unit housing shell 78, which includes a pump housing 79 and which is connected to the unit housing ring 66, which unit housing shell 78 covers and thereby accommodates the pump 60 and the control 64 realized as a sub unit within the unit housing 40. Between the pump 60 and the first support element 70, a tube 80 is shown which is sealingly connected to the pump 60 on one end and to the first support element 70 to form a path for the working fluid from the pump 60 to the pumping chamber 36. Finally, reference numeral 82 depicts a display.

LIST OF REFERENCE SIGNS

[0055] 2 breast shield [0056] 4 housing [0057] 6 insert [0058] 8 flange segment [0059] 10 nipple tunnel segment [0060] 12 sealing [0061] 14 nipple tunnel [0062] 16 nipple tunnel insert segment [0063] 18 flange insert segment [0064] 20 annular gap [0065] 22 open end section [0066] 24 closed end section [0067] 26 milk port [0068] 28 vacuum port [0069] 30 support section [0070] 32 diaphragm [0071] 34 pumping chamber for the air [0072] 36 pumping chamber for the working fluid [0073] 40 unit housing [0074] 42 front side [0075] 44 receptacle [0076] 46 vacuum interface [0077] 48 milk interface [0078] 50 milk container [0079] 52 housing receptacle [0080] 54 stop [0081] 56 rear side [0082] 58 flange support surface [0083] 60 pump [0084] 62 accumulator [0085] 64 control [0086] 66 unit housing ring [0087] 68 opening [0088] 70 first support element [0089] 72 second support element [0090] 74 inner opening [0091] 76 milk valve [0092] 78 unit housing shell [0093] 79 pump housing [0094] 80 tube [0095] 82 display [0096] E longitudinal extension