Blood sampling device
US6364847B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1999 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Oct 7, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/150992
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood sampling device is provided for mounting on a patient's forearm or other suitable body location, which incorporates an admixture reservoir and a closed blood sampling cavity in a single housing, the functional elements of which are firmly mounted and easily accessible to the caregiver. The blood sampling cavity is preferably accessed by a blunt cannula, which is readily retained in the sampling cavity by virtue of the cavity's secured position and elevated location on the sampling device housing during the sampling procedure, without the need for a cannula locking device. The sampling device of the present invention incorporates an admixture reservoir having a rotary actuator, through which the internal fluid volume of the admixture reservoir is manipulated from nil to a volume which is sufficient to remove all admixture from the blood sampling cavity during a sampling procedure, thus insuring that a clean blood sample may be withdrawn by an aspiration device attached to a sterile blunt cannula which penetrates a split septum of the blood sampling cavity. In a preferred embodiment, the internal surface of the admixture reservoir, which contacts a flexible stopper portion of…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.