Fetal blood sampling instrument
US4660570A · kind A · utility
Inventor
Key dates
| Filing date | Sep 8, 1986 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Sep 8, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/153
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An instrument (10) for obtaining a fetal blood sample including an elongated member (12) having an open end portion (14) and a membrane (16) disposed over the open end portion (14) for perfecting a seal about the open end portion (14). A lancet (18) in the form of a blade (64) or a sharp ended capillary tube (48) is disposed in the elongated member (12) for piercing the membrane (16) and making an incision in the skin of a fetus (20). A plunger (26) is supported within the elongated member (12) and is movable to create a suction within the open end portion (14) to draw fetal blood from the incision through the pierced membrane (16) and into the open end portion (14).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.