Container for fertilization of human ovocytes in the absence of CO.sub.2 -enriched air
US4902286A · kind A · utility
Inventor
Key dates
| Filing date | Jul 6, 1987 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Jul 6, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B50/00
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a container for fertilization of human ovocytes in the absence of CO.sub.2 which may be done in an incubuator at 37.degree. C. or in the vaginal cavity. The container of cylindrical shape has smooth and rounded walls 1 whose thickness is 2 mm in the body 2 of the cylinder but only 1 mm at the neck 3. On the outer wall of the neck is seen a screwthread 4 permitting external screwing on of the plug 12 whose sides are smooth and rounded. The blind end 5 of the container is rounded, the other 6 is flat and has a round orifice 7, which orifice is closed by a fine membrane 9 permitting hermeticity of the tube in order to avoid disorders of the culture medium 8 present in the container as of manufacture. Above the liquid remains about 200 .mu.l of gas 10. The inner walls 11 are smooth and rounded. After depositing the ovocytes and spermatozoa necessary for fertilization, and therefore after rupture of the membrane, hermeticity will be effected by two seals, after screwing on the plug, a circular one 13 at the neck of the tube, the other 14 on the endwall of the plug which will be flattened against the orifice of the tube 7 by a relief portion, located on the endwa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.