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Suction bell for breast pump

A suction bell assembly, and an elastomeric liner therefor, are disclosed in which the bell includes a rigid outer shell (10,310) of generally Y-shaped axial cross section with a conical top portion (101) and a cylindrical body portion (106). A thin, flexible, elastic liner (11) is disposed within the shell and has a conical and preferably corrugated upper portion (111) disposed within the conical top portion of the shell and a peripheral lip (114) for sealingly engaging a rim (19) extending about the shell's top portion. The liner also includes an elongated tubular portion 112 spaced normally inwardly from the shell's inner surface, the tubular portion including a resilient annular flange (119) that sealingly engages a shoulder at the lower end of the shell to maintain the liner in an axially stretched and tensioned state. one-way valve means (13,43) is formed integrally with the liner and is disposed at the lower end of the tubular portion below the flange (119). The valve means (13,43) includes a calotte-shaped closure portion (131) having at least one slit (28,438,439) to permit the passage of milk downwardly through the lower end of the liner. In preferred embodiments, each slit (28,438,439) has offset but communicating inner and outer portions (28a,28b,438a,438b, 439a,439b). Means are also disclosed for allowing swivel action of the shell (310) in relation to a connector (32) for detachably connecting the suction bell to a milk-collecting bottle.
Owner:AMEDA
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