Embryo transplantation catheter device

Abstract

The invention discloses an embryo transplantation catheter device. The embryo transplantation catheter device comprises an outer tube assembly and an inner tube assembly, the outer tube assembly comprises an outer tube, a tulip head is connected with the tail end of the outer tube, and the tulip head is provided with a through hole; and the inner tube assembly comprises an inner tube, the tail end of the inner tube can penetrate out of the through hole of the tulip head after penetrating through an inner cavity of the outer tube, and the head end of the inner tube is hermetically connected with the head end of the outer tube. According to the embryo transplantation catheter device, fertilized eggs can be better stored and displayed, operation errors can be reduced, liquid leakage and air leakage are avoided under strict tests, negative pressure in an operation can be reduced, and the embryo transplantation success rate is increased.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an embryo transfer catheter device suitable for fresh embryo and frozen-thawed embryo transfer. Background technique [0002] The final step of IVF is to place the screened transferable embryos in the best position of the uterine cavity through the transfer catheter at the transfer window. However, transfer difficulties due to cervical and uterine adhesions are not uncommon. [0003] The difficulty of transfer caused by cervical adhesions makes most transfer centers use double catheters to complete embryo transfer. Firstly, the hard outer tube is inserted into the uterine cavity at a suitable position along the external os of the cervix, and then the soft inner tube containing the embryo is placed into the inner cavity of the outer tube, and then the embryo carrier fluid is injected into the uterine cavity with a syringe. target location. [0004] However, there are als...

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Problems solved by technology

[0005] 1. Fibroid compression, endometriosis invasion, and cervical adhesions lead to changes in the internal and external os of the cervix and the structure of the uterine cavity, making it difficult for the soft silicone catheter to enter the appropriate position in the uterine cavity. If necessary, a probe must be used to expand the uterus, which will damage the cervix. endometrium;

[0006] 2. The head end of the conventional outer tube is placed at the position 2cm in front of the uterine fundus, where the endometrium is thickest, but the marking of the outer tube is unclear under ultrasound, which cannot accurately reflect the position of the outer opening of the outer tube;

[0007] 3. After the embryo is loaded into the inner tube, the ultrasonic position cannot be accurately displayed. Only the liquid loaded in the front and rear of the embryo can be used to display the embryo loading liquid section. The positioning is not accurate, which may easily lead to part of the transfer liquid remaining or sucking back

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