Composition and sampling receptacle method for treating blood with anticoagulant
US4687000A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1985 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | Mar 15, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/150717
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In order to counteract coagulation of a blood sample which is collected from an animal or a human body (24) and introduced into a receptacle, such as a syringe chamber (14), an anticoagulant is added to the sample within the receptacle. The anticoagulant may be capable of binding cation species in the blood, which are subsequently to be measured. Such cation species comprise hydrogen ions, ammonium ions, alkaline metal ions such as potassium and sodium ions, and alkaline earth metal ions such as magnesium and calcium ions. In order to compensate for the proportions of selected cation species which are bound by the anticoagulant, an additive containing such cation species is added to the blood sample so as to obtain substantially the same concentration of the selected cation species in an unbound condition in the anticoagulant treated blood sample as in the untreated blood sample. The anticoagulant and the additive are preferably added to the blood sample as a composition which may be deposited on or carried by a carrier body (15) which may be arranged within the receptacle in which the blood sample is introduced. The bulk density of the nonwetted carrier body is preferably smaller …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.