Parturient fetal membrane breaking and amniotic fluid sampling combined device

Abstract

The invention discloses a parturient fetal membrane breaking and amniotic fluid sampling combined device. The device comprises a first cylinder, a second cylinder and a membrane breaking and a sampling device which are in sliding inserted connection. A piston plug is arranged at one end of the second cylinder, the piston plug is tightly and slidably connected with the inner wall of the first cylinder, and a puncture hole is formed in the piston plug; a closed isolating membrane is arranged between the piston plug and an opening of the second cylinder; the membrane breaking and sampling devicecomprises a pipe body, one end of the pipe body is connected with a pipe needle which can penetrate out of the outer side of the piston plug through the puncture hole, a needle hole of the pipe needleis communicated with an inner cavity of the pipe body, an elastic support frame is arranged on the pipe body, and the elastic support frame is in sliding connection with the inner wall of the secondcylinder. According to the combined device, after an amniotic membrane part and a fetus are subjected to suction separated, membrane breaking is carried out through the pipe needle, the operation is convenient, the fetus can be effectively prevented from being mistakenly injured, and safety and reliability are achieved. During membrane breaking, an amniotic fluid in an amniotic cavity can be extracted through the pipe body and the pipe needle, the two operations can be completed without using other instruments, and the combined device is convenient to use.

Description

technical field [0001] The invention belongs to the technical field of instruments for midwifery and amniotic fluid sampling for pregnant women in labor, and in particular relates to a device for rupture of membranes and amniotic fluid sampling for pregnant women with late pregnancy or full-term pregnancy during childbirth. Background technique [0002] The amniotic membrane is the innermost layer of the fetal membrane. In the pregnant woman, the fetus is in the sac formed by the amniotic sac. The sac is filled with amniotic fluid. The fetus is suspended in the amniotic fluid of the amniotic sac during the entire development of the mother. During childbirth, the fetal membranes rupture at the right time to complete childbirth and enable the fetus to leave the mother's body smoothly. The membrane sac has a certain thickness and strength. When a pregnant woman gives birth, it is difficult to determine when the membranes will break; When the membranes are ruptured, external fo...

AI Technical Summary

Problems solved by technology

Existing problems: First, due to the narrow birth canal, it is difficult to observe and judge visually. The operation is all based on the touch, and the depth and weight are not easy to grasp, so the operation is inconvenient; When using a sharp instrument to rupture the membrane, the capsule cannot be cut if it is too light, and it is easy to accidentally injure the fetus if it is too heavy

The existing sampling method is that doctors perform amniocentesis under the guidance of ultrasound, which is very troublesome and unsafe

During delivery, since the amniotic fluid is mixed with the body fluid of the pregnant woman's birth canal after the rupture of the fetal membranes, it is difficult to obtain a pure amniotic fluid sample accurately. Therefore, sampling tests and inspections are generally not performed during delivery, and it is not conducive to further examination of fetal diseases and development.

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