Hospital grade breast pump device with wide negative pressure range

Abstract

The invention discloses a hospital grade breast pump device with a wide negative pressure range. The hospital grade breast pump device comprises a chassis, a stepping motor, an air chamber sliding cylinder, a crank, a rocking lever, a piston, a milk collecting bottle and a cup, wherein one end of the crank is in fixed transmission and connection with a rotating shaft of the stepping motor, the front end of the air chamber sliding cylinder is connected with the chassis through a support shaft, and the air chamber sliding cylinder can rotate around the support shaft; one end of the rocking lever is movably connected with the other end of the crank, the other end of the rocking lever is fixedly connected with the piston, and the piston is arranged in the air chamber sliding cylinder and movably and hermetically connected with the air chamber sliding cylinder; and a suction pipe joint is arranged at the front end of the air chamber sliding cylinder, the suction pipe joint is connected with the milk collecting bottle through a flexible pipe, the milk collecting bottle is further connected with the cup through the flexible pipe, and an exhaust hole is formed in the back part of the air chamber sliding cylinder. The hospital grade breast pump device with the wide negative pressure range, disclosed by the invention, effectively expands the negative pressure regulation range, the range can achieve -100mH-300mmHg, the negative pressure regulation at any level can be realized in the negative pressure range, and the hospital grade breast pump device can completely simulate the processes of sucking, stopping and releasing when a baby sucks breast milk.

Description

technical field [0001] The invention relates to daily necessities, in particular to a hospital-grade breast pumping device with a wide negative pressure range. Background technique [0002] The breast pumps currently used in hospital-level obstetrics and gynecology departments generate negative pressure through mechanical devices, and use negative pressure to suck out the mother's milk. The negative pressure range is achieved by adjusting the tightness of the gas passage. [0003] Using negative pressure to generate suction and absorb colostrum, there are related patents. For example, patent 200820022323.0 provides a negative pressure pulse type milk pumping method; patent 200620054035.4 adopts a solenoid valve, a pump and a control circuit to form an electric breast pump. However, most of the suction negative pressure ranges reported in these patents are below -250mmHg, which cannot fully simulate the process of "sucking", "stopping" and "releasing" of breastfeeding by ba...

AI Technical Summary

Problems solved by technology

However, most of the negative pressure ranges of breast pumping reported by these patents are below -250mmHg, which cannot completely simulate the process of "sucking", "stopping" and "releasing" of breast pumping.

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