US2011034869A1PendingUtilityA1
Suction Sequences for a Breastpump
Est. expiryDec 10, 2019(expired)· nominal 20-yr term from priority
A61M 1/06A61M 1/0697A61M 1/06935A61M 2205/3584A61M 2205/52A61M 1/75A61M 2205/8206A61M 2205/50A61M 2205/3569
48
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
A breastpump is provided with one or more novel suction sequences which are considered to produce advantageous particularized results. Such sequences include a suction method for increased milk production and an improved suction method in general.
Claims
exact text as granted — not AI-modified1 . A method for operating a breastpump comprising:
generating a cyclical pressure change according to the mathematical expression:
y
(
x
)
=
V
[
A
10
(
Tx
)
10
+
A
9
(
Tx
)
9
+
A
8
(
Tx
)
8
+
A
7
(
Tx
)
7
+
A
6
(
Tx
)
6
+
A
5
(
Tx
)
5
+
A
4
(
Tx
)
4
+
A
3
(
Tx
)
3
+
A
2
(
Tx
)
2
+
A
1
(
Tx
)
+
A
0
]
;
using the values in the following table:
A 10
A 9
A 8
A 7
A 6
Maximum curve
0
0
−516560
1787300
−2473330
Minimum curve
0
0
−516560
1787300
−2473330
A 5
A 4
A 3
A 2
A 1
Maximum curve
1752850
−680860
147200
−17360
370
Minimum curve
1752850
−680860
147200
−17360
370
A 0
Maximum curve
0
Minimum curve
0
wherein the range of T is from about 0.98 to about 1.5 and the range of V is from about 1.25 to about 0.15, x is time in seconds and y(x) is vacuum in mmHg.
2 . The method of claim 1 wherein each of said cyclical pressure changes includes a pause between each cycle at atmospheric pressure.
3 . The method of claim 2 wherein said pause is from about 0.2 to about 2 seconds in duration.
4 . The method claim 2 wherein said pause is about 0.25 seconds in duration.
5 . A method for operating a breastpump to stimulate a milk ejection reflex comprising:
generating a cyclical pressure change according to the mathematical expression:
y
(
x
)
=
V
[
A
10
(
Tx
)
10
+
A
9
(
Tx
)
9
+
A
8
(
Tx
)
8
+
A
7
(
Tx
)
7
+
A
6
(
Tx
)
6
+
A
5
(
Tx
)
5
+
A
4
(
Tx
)
4
+
A
3
(
Tx
)
3
+
A
2
(
Tx
)
2
+
A
1
(
Tx
)
+
A
0
]
;
using the values in the following table:
A 10
A 9
A 8
A 7
A 6
Maximum
0
0
15000000
−34920000
32800000
curve
Minimum
0
0
15000000
−34920000
32800000
curve
A 5
A 4
A 3
A 2
A 1
Maximum
−16040000
4340000
−616300
37000
−1000
curve
Minimum
−16040000
4340000
−616300
37000
−1000
curve
A 0
Maximum
8
curve
Minimum
8
curve
wherein the range of T is from about 0.95 to about 1.0 and the range of V is from about 1.3 to about 0.25, x is time in seconds and y(x) is vacuum in mmHg.
6 . The method of claim 5 wherein said cyclical pressure changes includes a pause between each cycle at atmospheric pressure.
7 . The method of claim 6 wherein said pause is from 0.0 to about 0.5 seconds in duration.
8 . A method for operating a breastpump comprising:
generating a cyclical negative pressure change, said negative pressure change having a duration; generating a peak negative pressure at a time about 50 percent along said duration; and generating a rest segment in said negative pressure change after said time of said peak negative pressure but before completion of a cycle.Cited by (0)
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