Anticoagulant internally coated needle
US6626874B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2000 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Apr 2, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/6081
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
To prevent blood from clotting or being diluted (which causes inaccuracy in the measurement of the characteristics of blood drawn from a patient), a needle assembly has the interior portion of its cannula and at least one portion of its hub covered by a dry coat of anticoagulant. To provide the dry coat of anticoagulant onto the interior surfaces of the cannula and the hub, a liquid anticoagulant is atomized thereto so that an even coat of the anticoagulant is provided to the interior surfaces of the cannula and hub. The volume and concentration of the anticoagulant atomized to the inside of the needle assembly are controlled as the liquid anticoagulant is ultra-sonically atomized to the interior portion of the needle assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.