TWI606822B - Artificial pacifier and breastfeeder with artificial pacifier (2) - Google Patents

Description

Artificial nipple and breast pump with artificial nipple (2) Field of invention

The invention relates to an artificial nipple and a breast pump having an artificial nipple.

An artificial nipple and a breast pump having an artificial nipple, which are installed in a bottle for infants and young children, such as a milk for preserving a formula or a pre-squeezed mother's milk, are widely used for feeding infants and young children. An artificial nipple and a breast pump having an artificial nipple are known in which the artificial nipple body is rotationally symmetrical about a central axis of the breastfeeder, for example, a slightly conical shape (Patent Document 1).

Conventional technical literature Patent literature

[Patent Document 1] Japanese Laid-Open Patent Publication No. 2011-92551

The feeding movement of infants and young children is accompanied by complex movements of the shape of the lips of the artificial nipple or the movement of the tongue. Therefore, as described in the artificial nipple body of Patent Document 1, the shape of the rotation around the central axis of the breastfeeder is not necessarily suitable for the feeding movement. Artificial pacifier body shape When the shape is not suitable for the shape of the feeding exercise, the beverage released from the breastfeeder to the oral cavity may not be drunk and leaked out of the mouth, and the feeding cannot be performed efficiently. Further, when an infant contains an artificial nipple, the upper lip may be inside the inlet due to friction with the artificial nipple body. Furthermore, since the infant with the artificial nipple is not only for the purpose of feeding, but also strongly bites like playing, the artificial nipple body sometimes falls off from the breastfeeder.

It is an object of the present invention to provide an artificial teat and a breastfeeder having an artificial teat that is suitable for the feeding movement of infants and young children.

According to an aspect of the present invention, an artificial nipple is provided, the artificial nipple having a base having a protrusion at an upper end, a nipple portion and a nipple formed above the protrusion, the nipple having a milk hole; The portion and the nipple as a whole are slightly conical, and the slightly conical central axis is inclined with respect to the central axis of the base toward the upper temporal side of the feeding.

Moreover, according to another aspect of the present invention, an artificial teat is provided, wherein the nipple portion has an annular convex curved surface whose diameter length is tapered upward, that is, a first nipple crotch portion and a second nipple crotch portion, the first nipple The crotch portion and the second nipple crotch portion are formed by a first narrow portion formed by an annular concave curved surface, and the second nipple crotch portion and the nipple portion are formed by an annular concave curved surface. The narrow part is formed by division.

That is, in the above aspect, the central axis of the slightly conical shape is inclined with respect to the central axis of the base toward the upper side of the feeding portion with respect to the nipple portion and the nipple as a whole, thereby making the artificial nipple body Upper side Partially close to the infant's upper jaw, it ensures a large area on the temporal side of the artificial nipple. As a result, the freedom of movement of the tongue can be improved. As a result, it is effective to provide an artificial nipple suitable for the feeding movement of infants and infants and a breast pump having an artificial nipple.

Further, according to another aspect of the present invention, an artificial teat is provided, wherein the nipple is slightly spherical, and a concave curved surface is formed on a lower side of the nipple of the nipple at the time of feeding. That is, in this aspect, the concave end surface of the lower side of the nipple is formed to prevent the front end of the tongue which is raised by the feeding movement of the infant from falling off from the nipple, and the release of the beverage can be surely performed.

Further, according to another aspect of the present invention, an artificial teat is provided in which a face on the crotch side of the nipple portion of the nipple is formed with less unevenness as a whole surface than a face on the crotch side of the nipple.

That is, in this aspect, the upper side of the artificial nipple is closely attached to the upper jaw of the infant, and the feeding movement can be performed stably. Moreover, since the upper side of the artificial nipple is in close contact with the upper jaw of the infant, it is possible to efficiently feed the baby by suction so that the oral cavity is indeed low pressure. Further, by forming a small unevenness on the entire upper surface of the artificial nipple body 7 on the upper side, it is possible to prevent the upper lip of the infant from rubbing against the artificial nipple body 7 and winding the inside of the inlet.

Still further, in accordance with another aspect of the present invention, an artificial teat will be provided in which the assembled member is separated from the aforementioned projections 77 when the artificial teat is assembled relative to the assembled member. That is, in this aspect, even if the infant contains the artificial nipple body deep, the lips are not sandwiched between the assembled member and the artificial nipple protrusion.

Further, according to another aspect of the present invention, an artificial nipple is provided Therein, wherein the aforementioned milk hole is formed near the top of the temporal side above the aforementioned nipple. That is, in this aspect, by the formation of the milk hole near the top of the temporal side above the nipple, the released beverage can be prevented from directly contacting the deep throat.

Further, according to another aspect of the present invention, a breastfeeder having the above-described aspect of the artificial nipple and the breastfeeder body is provided.

According to the present invention, it is effective to provide an artificial nipple suitable for the feeding movement of infants and infants and a breast pump having an artificial nipple.

1‧‧‧ breastfeeding device

2‧‧‧Artificial pacifier

3‧‧‧Assembly components

4‧‧‧Lacter body

5‧‧‧1st ventilation member

6‧‧‧2nd ventilation member

7‧‧‧ Artificial pacifier body

31‧‧‧Assembled component body

32, 51, 75‧‧‧Flange

33, 35, 57, 61‧‧

34‧‧‧ fitting protrusion

36‧‧‧Female spiral

41‧‧‧ male spiral

52a, 52b, 52c, 52d‧‧‧ fitting holes

53, 54, 55‧‧‧ check valves

53a, 53b, 54a, 54b, 55a, 55b‧‧‧ body

53c, 54c, 55c‧‧ slit

53d, 54d, 55d‧‧‧ next door

56, 65‧‧‧ sleeve department

62‧‧‧Support wall

63‧‧‧Weibi

64‧‧‧ recess

65‧‧‧Sleeve

66‧‧‧ditch

67‧‧‧Ventinel

71‧‧‧ base

72‧‧‧1st nipple crotch

73‧‧‧2nd nipple crotch

73a‧‧‧Apartment

74‧‧‧ nipple head

74a‧‧‧The milk hole

74b‧‧‧ concave surface

75a‧‧‧Fixing groove

76‧‧‧ head

77‧‧‧Protruding

77a‧‧‧Maximum diameter

79‧‧‧1st narrow part

80‧‧‧2nd narrow

81‧‧‧empty department

100‧‧‧ container

C‧‧‧The center of the concave surface

Central axis of the C1‧‧‧ slightly cone

Central axis of the base of C2‧‧

J‧‧‧The second narrow part

K‧‧‧ lower end of concave surface

P‧‧‧vacuum pump

R‧‧‧After the area of the lower side

Fig. 1 is a perspective view of a breast pump according to an embodiment of the present invention.

2 is a partial longitudinal cross-sectional view of an artificial nipple including the breast pump of FIG. 1.

Figure 3 is a top plan view of the assembled component of the breast pump of Figure 1.

4 is a front elevational view of the assembled component of FIG. 3.

Fig. 5 is a cross-sectional view taken along line A-A of the assembled member of Fig. 3;

Figure 6 is a top plan view of the first ventilation member of the artificial nipple of the breast pump of Figure 1;

Fig. 7 is a bottom view of the first ventilation member of Fig. 6;

Fig. 8 is a cross-sectional view taken along line A-A of the first ventilation member of Fig. 6;

Fig. 9 is a cross-sectional view taken along line B-B of the first ventilation member of Fig. 6;

Fig. 10 is a cross-sectional view taken along line C-C of the first ventilation member of Fig. 7;

Figure 11 is a top plan view of the second ventilation member of the artificial teat of the breast pump of Figure 1;

Fig. 12 is a front elevational view of the second ventilation member of Fig. 11;

Fig. 13 is a cross-sectional view taken along line A-A of the second ventilation member of Fig. 11;

Figure 14 is a top plan view of the artificial nipple body of the artificial nipple of the breast pump of Figure 1.

Figure 15 is a front elevational view of the artificial teat body of Figure 14.

Figure 16 is a right side view of the artificial teat body of Figure 14.

Figure 17 is a cross-sectional view of the artificial teat body of Figure 14 taken along line A-A.

Figure 18 is a cross-sectional view taken along line B-B of the artificial teat body of Figure 16;

19 is a perspective view showing the fitting of the first ventilation member and the second ventilation member.

Fig. 20 is a view for explaining flow rate measurement of the breast pump of Fig. 1;

Form for implementing the invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Across the full graphic, the corresponding constituent elements are noted with a common reference symbol.

Fig. 1 is a perspective view of a breast pump 1 according to an embodiment of the present invention, and Fig. 2 is a partial longitudinal sectional view of the artificial teat 2 including the breast pump 1 of Fig. 1. In the present specification, the description of each component of the breastfeeder 1 is based on the arrangement in the breastfeeder 1 in a state in which the horizontal plane is standing, and the "upper" and "lower" are determined.

The breastfeeder 1 has an artificial nipple 2, an assembly member 3 and a breastfeeder body 4. The artificial nipple 2 has a vent hole member, that is, a first ventilating member 5, a vent clogging device, that is, a second venting member 6, and an artificial nipple body 7. The breastfeeder body 4 is a bottle for accommodating a baby drink such as a formula or a pre-squeezed mother's milk. For example, it is formed of glass or a hard synthetic resin or the like. The artificial nipple body 7 is assembled to the nipple body 4 through the first ventilation member 5 and the second ventilation member 6, and is fixed by screwing the assembly member 3 to the breastfeeder body 4 as will be described later.

3 is a top view of the assembly member 3 of the breast pump 1 of FIG. 1, FIG. 4 is a front view of the assembly member 3 of FIG. 3, and FIG. 5 is a cross-sectional view taken along line A-A of the assembly member 3 of FIG.

The assembly member 3 is a cylindrical member and is formed by integrally molding a hard synthetic resin such as polypropylene. The assembly member 3 has an assembly member body 31 and an annular flange portion 32 that extends inward in the radial direction from the upper end of the assembly member body 31. The flange portion 32 is sectioned to form an upper opening 33. The artificial nipple 2 protrudes upward through the opening 33. An annular fitting projection 34 (FIG. 5) extending downward is formed on the lower surface of the flange portion 32. The fitting projection 34 is fitted to the fitting groove 75a of the artificial nipple body 7 as will be described later. The lower edge of the assembly member body 31 is divided into openings 35 having a larger diameter than the upper opening 33. A female spiral portion 36 that is screwed to the male spiral portion 41 (FIG. 2) provided on the outer peripheral surface of the upper end portion of the breastfeeder main body 4 is formed on the inner circumferential surface of the assembly member body 31.

Fig. 6 is a top view of the first ventilation member 5 of the artificial teat 2 of the breast pump 1 of Fig. 1, Fig. 7 is a bottom view of the first ventilation member 5 of Fig. 6, and Fig. 8 is a first ventilation member 5 of Fig. 6. FIG. 9 is a cross-sectional view taken along line BB of the first ventilation member 5 of FIG. 6, and FIG. 10 is a cross-sectional view taken along line CC of the first ventilation member 5 of FIG.

The first ventilation member 5 is an annular and flat member, and An elastic material such as a soft synthetic resin, for example, a tantalum resin, is integrally molded. An annular flange portion 51 that extends outward in the radial direction is provided below the outer peripheral surface of the first ventilation member 5. Further, four circular fitting holes 52a, 52b, 52c, and 52d are formed on the upper surface of the first ventilation member 5. The fitting holes 52a, 52b, 52c, and 52d are disposed at equal intervals around the central axis of the first ventilation member 5. Check valves 53, 54, 55 are provided in the middle of each of the fitting holes 52a, 52b, and 52c. A check valve is not provided in the middle of the fitting hole 52d and is closed. Therefore, the first ventilation member 5 can be said to have three ventilation holes 53, 54, and 55 as the check valves 53, 54, and 55. Further, a sleeve portion 56 that is closed is formed on the back surface of the first ventilation member 5 corresponding to the fitting hole 52d, and an opening 57 is formed in the center of the first ventilation member 5.

The check valves 53, 54, 55 each have a pair of valve bodies. For example, as shown in FIGS. 7 and 10, the check valve 53 has a pair of valve bodies 53a and 53b. The valve bodies 53a and 53b are flat movable pieces that extend obliquely downward from the inner circumferential surface of the fitting hole 52a. A slit 53c extending in the radial direction of the first ventilation member 5 is formed between the front ends of the valve bodies 53a and 53b. Since FIG. 8 is a cross-sectional view through the slit 53c, the slit 53c is not shown in FIG. 8, and only one valve body 53a is shown. A partition wall 53d is formed around the valve bodies 53a and 53b on the lower surface of the first ventilation member 5.

Normally, as shown in Fig. 10, if the valve bodies 53a, 53b form a trapezoidal cross section, the slit 53c is closed. Therefore, the pressure caused by the flow of the gas or the like upward from the lower side of the first ventilation member 5 acts on the direction in which the valve bodies 53a and 53b are closed. In other words, the slit 53c is continuously locked, and the check valve 53 is closed with respect to the flow of gas or the like upward from the lower side of the first ventilation member 5. On the other hand, the pressure caused by the flow from the upper side of the first ventilation member 5 to the lower side acts on the direction in which the tips of the valve bodies 53a and 53b are separated from each other. Therefore, the slit 53c is opened, and the check valve 53 is opened with respect to the flow from the upper side of the first ventilation member 5 to the lower side.

Since the basic configuration and operation of the other check valves 54 and 55 other than the valve body shape are the same as those of the check valve 53, they will be briefly described. The check valve 54 has a pair of valve bodies 54a, 54b. The valve bodies 54a and 54b are curved movable pieces that extend obliquely downward from the inner circumferential surface of the fitting hole 52b. A slit 54c extending in the radial direction of the first ventilation member 5 is formed between the front ends of the valve bodies 54a and 54b. A partition wall 54d is formed around the valve bodies 54a and 54b on the lower surface of the first ventilation member 5. Normally, if the valve bodies 54a, 54b form a circular arc-shaped cross section, the slit 54c is closed. That is, in general, the valve bodies 54a and 54b are integrally formed as one convex curved surface.

The check valve 55 has a pair of valve bodies 55a, 55b. The valve bodies 55a and 55b are flat movable pieces that extend in the lateral direction from the inner circumferential surface of the fitting hole 52c. A slit 55c extending in the radial direction of the first ventilation member 5 is formed between the front ends of the valve bodies 55a and 55b. A partition wall 55d is formed around the valve bodies 55a and 55b on the lower surface of the first ventilation member 5. Normally, if the valve bodies 55a, 55b form a linear cross section, the slit 55c is closed. That is, the valve bodies 55a and 55b are integrally formed in one plane.

The pressure caused by the flow of the above three check valves 53, 54, 55 is gradually increased in accordance with the order of the description, that is, the pressure caused by the flow of the slits 53c, 54c, 55c is gradually increased. . When the pair of valve bodies are subjected to the pressure caused by the flow from above the first ventilation member 5 to the lower side, The force component of the force acting in the direction separating the front ends of the valve bodies is dependent. When each check valve is subjected to the same pressure in each open flow direction, that is, when the same pressure difference is disposed, the force component acting on each valve body is a trapezoidal arrangement in which the valve body is arranged in a circular arc shape. The valve body has to be large, and the valve body of the circular arc configuration is larger than that of the valve body of the linear configuration. Therefore, when arranged under the same differential pressure, the opening areas of the slits 53c, 54c, and 55c are gradually decreased in the order described, and the flow rates of the check valves 53, 54, and 55 are also decreased in this order.

Fig. 11 is a top view of the second ventilation member 6 of the artificial teat 2 of the breast pump 1 of Fig. 1, Fig. 12 is a front view of the second ventilation member 6 of Fig. 11, and Fig. 13 is a second ventilation member 6 of Fig. 11. A cross-sectional view of the AA line.

The second ventilation member 6 is an annular and flat member, and is formed by integrally molding a hard synthetic resin such as polypropylene. An annular support wall 62 extending upward is formed in the vicinity of the opening 61 on the upper surface of the second ventilation member 6. Further, an annular peripheral wall 63 extending downward from the outer peripheral edge portion thereof is formed on the lower surface of the second ventilation member 6, and therefore, a concave portion 64 formed by the peripheral wall 63 is formed on the lower surface of the second ventilation member 6. The concave portion 64 is fitted to the first ventilation member 5 as will be described later.

A part of the lower portion corresponding to the upper portion of the support wall 62 is formed in the second ventilation member 6, and a hollow sleeve portion 65 extending downward is formed. A cross-sectional semi-circular groove 66 extending from the outer circumferential surface of the second ventilation member 6 in the radial direction is formed on the upper surface of the second ventilation member 6. The semicircular groove 66 of the cross section communicates with the inside of the hollow sleeve portion 65 to form a vent hole 67.

Figure 14 is an artificial nipple of the artificial nipple 2 of the breast pump 1 of Figure 1. FIG. 15 is a front view of the artificial teat body 7 of FIG. 14, FIG. 16 is a right side view of the artificial teat body 7 of FIG. 14, and FIG. 17 is a cross-sectional view of the artificial teat body 7 of FIG. Figure 18 is a cross-sectional view taken along line BB of the artificial teat body 7 of Figure 16 .

The artificial teat body 7 is a hollow member as a whole, and is formed by integrally molding an elastic material such as soft synthetic resin such as enamel resin. The artificial nipple body 7 has a base portion 71, a first nipple portion 72, a second nipple portion 73, and a nipple portion 74. The base portion 71 has a flange portion 75, a head portion 76, and a protruding portion 77.

The flange portion 75 extends annularly outward from the lower end of the cylindrical head portion 76 in the radial direction. An annular fitting groove 75a is formed on the upper surface of the flange portion 75, and the fitting groove 75a is fitted into the fitting projection 34 provided on the lower surface of the flange portion 32 of the assembly member 3 (FIG. 2). The outer diameter of the flange portion 75 is slightly the same as the outer diameter of the flange portion 51 of the first ventilation member 5 and the outer diameter of the second ventilation member 6. The inner diameter of the opening 78 of the flange portion 75 is slightly the same as the inner diameter of the opening 57 of the first ventilation member 5 and the outer diameter of the opening 61 of the second ventilation member 6 (FIG. 2).

In order to insert the head 76 into the opening 33 of the assembly member 3, the head portion 76 is formed slightly longer than the thickness of the flange portion 32 of the assembly member 3 in the axial direction. Further, the outer diameter of the head portion 76 is formed finely with respect to the lower flange portion 75 and the upper protruding portion 77.

The protruding portion 77 is an annular convex curved surface whose diameter is gradually increased from the upper end of the head portion 76, and the protruding portion 77 passes through the largest diameter portion 77a which is the annular portion having the largest outer diameter, and reaches the first nipple portion 72. Further, the protruding portion 77 may be formed in a flange shape, and extends annularly outward from the upper end of the head portion 76 in the radial direction.

The first nipple crotch portion 72, the second nipple crotch portion 73, and the nipple portion 74 The body is a slightly conical shape with the apex of the nipple 74 as the apex. The centerline axis C1 of the slightly conical shape is inclined to the upper side with respect to the central axis C2 of the base 71. In other words, the artificial nipple body 7 is a base portion 71, that is, a portion below the maximum diameter portion 77a of the protruding portion 77, and has a rotationally symmetrical bobbin shape centered on the central axis C2, and presents from the uppermost diameter portion 77a: a slightly conical body is inclined The shape disposed on the base 71. Therefore, the breast-feeding device 1 of the present invention has a directionality for proper use, and when feeding, it is necessary to contain the infant as shown in Fig. 16 on the right side as the upper side and the left side as the lower side. In the present embodiment, the inclination angle is 7°, but other angles are also possible.

The first nipple crotch portion 72 and the second nipple crotch portion 73 are annular convex curved surfaces whose diameter length is tapered upward. The first nipple portion 72 and the second nipple portion 73 are formed by a first narrow portion 79 formed by an annular concave curved surface. In other words, the first nipple portion 72 and the second nipple portion 73 which are also convex curved surfaces are continuously connected by the first narrow portion 79. Therefore, the first nipple portion 72 is formed by the largest diameter portion 77a of the protruding portion 77 and the first narrow portion 79.

The nipple 74 is slightly spherical, and a through hole for feeding, that is, a milk hole 74a (Fig. 14) is formed near the top of the upper side. Since the milk hole 74a is disposed near the top of the upper crotch side, when the infant is fed, the released beverage can be prevented from directly contacting the deep throat. The milk hole 74a is preferably disposed at a position where the released beverage can reach the throat along the upper jaw. A concave curved surface 74b is formed in a slightly upper portion of the crotch side below the nipple 74. The concave curved surface 74b is formed at an angle that is inclined more toward the upper side than the central axis C1.

The second nipple crotch portion 73 and the nipple portion 74 are formed by being partitioned by a second narrow portion 80 formed by an annular concave curved surface. In other words, the second milk of the convex surface The mouth portion 73 and the slightly spherical nipple portion 74 are continuously connected by the second narrow portion 80. Therefore, the second nipple portion 73 is formed by the first narrow portion 79 and the second narrow portion 80.

Next, the further description of the artificial nipple body 7 will be described while explaining the feeding movement of the infant containing the artificial nipple body 7. The infant squeezes the beverage while sucking the beverage from the artificial nipple body 7 by the peristaltic movement of the tongue. At this time, the infant carries the artificial nipple body 7 up and down on the side of the raised tongue, and the ridge is transmitted to the depth of the throat. That is, the artificial nipple body 7 is pressed while being moved upward from the lower side to the lower chin side by the portion of the tongue bulging. The path through which the tongue passes through the artificial nipple body 7, that is, the region R of the lower side portion shown in Figs. 14 and 15 can be improved by adjusting the softness and hardness of the region R of the lower side portion shown in Figs. 14 and 15 The freedom of movement of the tongue. As a result, in terms of the function of the body of the artificial nipple body 7, the peristaltic movement of the tongue of the infant can be induced, and the feeding movement of the infant can be performed more smoothly. This will be described with reference to Fig. 17 .

The feeding motion of the infant is started by the abutting portion 73a which is the portion on the lower side of the second nipple portion 73 of the nipple. Therefore, first, in order to make the portion easy to be flattened, the artificial nipple body 7 must be formed. This can be achieved by the presence of the cavity 81 formed on the inner surface of the projection 77 and the inner surface of the first nipple portion 72. In other words, when the abutting portion 73a of the second nipple portion 73 is pushed by the front end of the raised tongue, the upper portion of the first nipple portion 72 is elastically deformed inside the hollow portion 81. Then, as the tip end of the raised tongue moves upward, the upper portion of the first nipple portion 72 is restored, and the restoring force is moved to move over the tongue. At this time, in the inside of the artificial nipple body 7, the beverage is gradually compressed toward the nipple 74.

Next, the second nipple portion 73, which is the starting point of the feeding movement of the infant, is easily crushed and formed, and is the boundary region between the nipple 74 and the second narrow portion 80, that is, the lower end of the concave curved surface 74b of the nipple 74. Part K. This can be achieved by forming the front and rear portions K of the route through which the tongue passes, that is, the upper portion J of the second narrow portion 80 and the center C of the concave curved surface 74b of the nipple portion 74 to be thinner. By easily forming the portion K at the lower end of the concave curved surface 74b, the beverage can be efficiently released from the milk hole 74a. In one embodiment, the upper portion J of the second narrow portion 80 has a thickness of 0.9 mm, and the center C of the concave curved surface 74b of the nipple portion 74 is 0.8 mm thick, so that the lower end portion K of the concave curved surface 74b of the nipple portion 74 is 1.3mm thickness.

Further, the feeding movement of the infant is performed by pressing the front end of the raised tongue until the front end of the nipple 74 ends, and returning to the starting point again, but when the nipple 74 is entirely spherical or convex, the bulge is raised. The front end of the tongue sometimes slips off at the end, and falls off the route, and the beverage cannot be released smoothly. However, since the nipple portion 74 of the artificial nipple body 7 has the above-described concave curved surface 74b, the front end of the raised tongue does not fall off from the passage through the nipple 74, but can be moved to the end.

The route through which the artificial nipple body 7 passes over the tongue of the infant has the above-described various characteristic configurations, and the peristaltic movement of the tongue of the infant can be induced, and the feeding movement of the infant can be performed more smoothly.

Further, the surface on the upper side of the first nipple portion 72 and the second nipple portion 73 is formed to be smaller than the surface on the lower side of the nipple portion. Therefore, the entire surface of the artificial nipple body 7 on the flank side is formed with less unevenness. Therefore, the upper side of the artificial nipple body 7 is in close contact with the upper jaw of the infant, and the feeding motion can be stably performed. Further, since the portion on the side of the upper side of the artificial nipple body 7 is in close contact with the upper jaw of the infant, it is possible to efficiently feed the inside of the oral cavity by suction. Further, by forming a small unevenness on the entire upper surface of the artificial nipple body 7 on the upper side, it is possible to prevent the upper lip of the infant from rubbing against the artificial nipple body 7 and winding the inside of the inlet.

Further, as described above, the artificial nipple body 7 is inclined with respect to the central axis C2 of the base 71, and the line axis C1 of the slightly conical body is inclined upwardly, thereby making the squat portion of the artificial nipple body 7 close to the infant. The state of the upper jaw ensures a large area and a large hollow portion 81 on the crotch side of the artificial nipple body 7. As a result, the freedom of movement of the tongue can be improved.

Since the artificial nipple body 7 is formed of a soft synthetic resin or the like, various kinds of coloring can be performed. The conventional nipple is formed by a transparent or white mixed resin. However, the artificial nipple body 7 can also be colored in a warm color such as pink or skin color, or other colors. By coloring the artificial nipple body 7 as a whole to form a color other than transparent or mixed white, it is possible to prevent confusion with other people's breastfeeders in a hospital, and to improve recognition. Furthermore, by coloring in a warm color system, the infant can be given an appetite to make the infant feel mild or intimate. Further, by partially coloring the artificial nipple body 7 and applying a pattern or pattern, a highly designed nipple can be formed. Further, it is also possible to use an imprint or the like instead of coloring. For example, as shown in FIG. 14, in order to easily discriminate the direction at the time of use, a character such as "up" may be engraved on the upper side.

FIG. 19 is a perspective view showing the fitting of the first ventilation member 5 and the second ventilation member 6. Before assembling the breastfeeder 1, it is first necessary to fit the first ventilation member 5 and the second ventilation member 6. That is, as described above, the first ventilation member 5 has three check valves 53, 54, and 55 corresponding to the vent holes. As described above, since the flow rates obtained by the respective check valves 53, 54, and 55 are different under the same pressure difference, one suitable check valve can be selected. In order to insert the fitting hole provided in the selected check valve into the sleeve portion 65 of the second ventilation member 6, the second ventilation member 6 is covered from above with respect to the first ventilation member 5, and the fitting is completed. In other words, the first ventilation member 5 is fitted into the recess 64 of the second ventilation member 6. At this time, the lower end surface of the peripheral wall 63 of the second ventilation member 6 abuts against the upper surface of the flange portion 51 of the first ventilation member 5. As a result, it is possible to obtain one vent hole that connects the first ventilation member 5 and the second ventilation member 6 to the upper side and the lower side, that is, a vent hole corresponding to the selected check valve. In other words, the first ventilation member 5 and the second ventilation member 6 constitute a flow rate adjustment mechanism. Further, the shape of the hollow sleeve portion 65 and the groove 66 of the second ventilation member 6, that is, the shape of the vent hole 67, etc., is designed so as not to hinder the flow of the gas that has passed through the selected check valve.

Further, before assembling the breastfeeder 1, the artificial nipple body 7 is mounted relative to the assembly member 3. That is, the artificial nipple body 7 is inserted from below the assembly member 3 through the opening 35 and the opening 33. Since at least the outer diameter of the largest diameter portion 77a of the protruding portion 77 of the artificial nipple body 7 is larger than the inner diameter of the opening 33 of the assembling member 3, the artificial nipple body 7 is inserted while being elastically deformed. Finally, the artificial nipple body 7 is inserted until the flange portion 32 of the assembly member 3 is disposed at the head 76 of the artificial nipple body 7. In a state in which the assembly of the artificial teat body 7 with respect to the assembly member 3 is completed (FIG. 2), the assembly member 3 is assembled. The fitting projection 34 of the flange portion 32 is fitted into the fitting groove 75a of the flange portion 75 of the artificial nipple body 7. Therefore, it is assumed that the artificial nipple body 7 does not easily fall off from the assembly member 3 even if the infant strongly bites the artificial nipple body 7.

Here, in a state in which the artificial nipple 2 is assembled with respect to the assembly member 3, the flange portion 32 of the assembly member 3 is separated from the protruding portion 77 of the artificial nipple body 7. Further, since the diameter of the protruding portion 77 gradually increases from the upper end of the head portion 76, the interval between the two members in the radial direction becomes larger. With this configuration, it is assumed that even if the infant contains the artificial nipple body 7 deep, the lip portion of the flange portion 32 of the assembly member 3 and the protruding portion 77 of the artificial nipple body 7 are not sandwiched.

Finally, the assembly of the breast pump 1 will be explained. As described above, first, the first ventilation member 5 and the second ventilation member 6 that have been fitted with the check valve 53 in advance, for example, are placed on the open end of the breast milk main body 4 in which the beverage is placed. Next, the pre-assembled assembly member 3 and the artificial nipple body 7 are covered from above, and the assembly member 3 is screwed with respect to the breastfeeder body 4, and assembly is completed (FIG. 2). At this time, the support wall 62 formed on the upper surface of the second ventilation member 6 abuts against the lower end surface of the artificial nipple body 7. Therefore, when the assembly member 3 is screwed with respect to the breastfeeder main body 4, even if it is strongly overclosed, the upper surface of the second ventilation member 6 can be prevented from coming close to the lower end surface of the artificial nipple body 7, and the vent hole 67 can be prevented from being closed.

When the infant attracts the artificial nipple 2 to lower the pressure in the breastfeeder 1, a pressure difference is generated inside and outside the breastfeeder 1. By the pressure difference, the check valve is opened, and the gap between the female screw portion 36 of the assembly member 3 and the male screw portion 41 of the breastfeeder body 4 passes through the vent hole 67, and finally the outside air is introduced into the breast pump through the check valve 53. Inside. On the other hand, the beverage can be prevented by having the check valve 53 Leaked from the inside of the breastfeeder 1.

Fig. 20 is a view for explaining flow rate measurement of the breast pump 1 of Fig. 1; The measurement method is that water of normal temperature is poured into the breast pump 1 and sucked by a vacuum pump P at a pressure of -13 kPa, and the flow rate of the attracted water is measured. The water sucked from the breastfeeder 1 is housed in the container 100. When the air is ventilated by the trapezoidal check valve 53, when it is ventilated by the circular check valve 54, and is ventilated by the linear check valve 55, it is 26.1 (ml/min) and 23.3, respectively. Results of ml/min) and 18.0 (ml/min). Further, when the inside of the breastfeeder 1 was not ventilated, that is, when the pressure in the lactation device 1 continued to decrease, it was a result of 14.1 (ml/min).

As described above, the vent hole 67 of the second ventilation member 6 is appropriately selectively connected to the vent holes 53, 54, and 55 of the first ventilation member 5 in accordance with the suction force at the time of feeding the infant, whereby the breastfeeder can be adjusted. 1 The flow of gas flowing into the inside. For example, in the case of an infant who has a strong suction force during feeding, the vent hole 55 of the first ventilation member 5 is selected so that the flow rate of the gas flowing into the inside from the outside of the breastfeeding device 1 is reduced. As a result, the pressure in the breastfeeder 1 which is lowered by the suction does not easily rise, and the amount of the drink that the infant can feed can be reduced in one feeding operation. On the other hand, in the case of an infant having a weak suction force during feeding, the vent hole 53 of the first ventilation member 5 is selected so that the flow rate of the gas flowing into the inside from the outside of the breastfeeding device 1 is increased. As a result, the pressure in the lactation device 1 which is lowered by the suction rises, and the amount of the drink that the infant can feed can be increased in one feeding operation. Therefore, it is possible to adjust the appropriate feeding time or beverage flow rate for infants and toddlers in a simple manner (for example, the time required to drink the beverage in the breastfeeder is about 15 to 20 minutes). Further, the communication between the vent holes is a concave portion (fitting hole) and a convex portion (sleeve) of the first ventilation member 5 and the second ventilation member 6 Since the fitting is performed, the communication of the vent holes can be performed more surely.

The communication of the vent holes is not required to be performed by the fitting of the concave portions and the convex portions of the first ventilation member and the second ventilation member, that is, the configuration in which the convex portions are not formed, and the positions of the vent holes are matched. Further, a plurality of hollow sleeve portions extending upward may be provided on the upper surface of the first ventilation member, and a check valve as described above may be provided in the sleeve portion, and a through hole may be provided in the corresponding second ventilation member. Make it fit. Moreover, since the adjustment of the flow rate under the same pressure difference is substantially the same as the adjustment of the opening area of the vent hole, it is not necessary to use a check valve having a different valve body shape as in the above embodiment, and it is only provided with respect to the first ventilation member. A plurality of through holes having different opening areas. Further, when the first ventilation member has a plurality of through holes having different opening areas, the check valve may be provided only in the hollow sleeve portion of the second ventilation member. In the above embodiment, the number of vent holes that can be adjusted in the flow rate adjustment mechanism may be three, or two or four or more.

The above features of the nipple body are not only applicable to the aforementioned breastfeeding device, but may also be applied to a conventional nipple.

71‧‧‧ base

72‧‧‧1st nipple crotch

73‧‧‧2nd nipple crotch

73a‧‧‧Apartment

74‧‧‧ nipple head

74b‧‧‧ concave surface

75‧‧‧Flange

75a‧‧‧Fixing groove

76‧‧‧ head

77‧‧‧Protruding

77a‧‧‧Maximum diameter

79‧‧‧1st narrow part

80‧‧‧2nd narrow

Central axis of the C1‧‧‧ slightly cone

Central axis of the base of C2‧‧

Claims (6)

An artificial nipple having a base having a protrusion at an upper end, a nipple portion and a nipple formed above the protrusion, the nipple having a milk hole; the nipple portion and the nipple as a whole are slightly conical The central axis of the slightly conical shape is inclined with respect to the central axis of the base portion toward the upper crotch side during feeding, and when the artificial nipple is assembled to the assembly member, the assembly member and the protruding portion are separated over the entire circumference. The artificial teat of claim 1, wherein the nipple portion has an annular convex curved surface whose diameter length is tapered upward, that is, the first nipple portion and the second nipple portion, the first nipple portion and the second nipple The crotch portion is formed by a first narrow portion formed by an annular concave curved surface, and the second nipple crotch portion and the nipple portion are formed by a second narrow portion formed by an annular concave curved surface. The artificial teat of claim 1, wherein the nipple is slightly spherical, and a concave curved surface is formed on a surface of the lower chin of the nipple at the time of feeding. The artificial teat of claim 1, wherein the surface on the upper side of the nipple portion of the nipple is smaller than the surface on the lower side of the nipple. The artificial teat of claim 1, wherein the aforementioned milk hole is formed near a top portion of the temporal side above the aforementioned nipple. A breastfeeder having the artificial nipple and the breastfeeder body of any one of claims 1 to 5.