The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 04, 1999
Filed:
Oct. 28, 1997
Hans Otto-Nagels, Bovenden, DE;
Heraeus Instruments GmbH & Co. KG, Hanau, DE;
Abstract
The invention concerns a cell culture harvesting device consisting of a scraper head with a blade and a guide strip, the scraper head and the guide strip being connected with one another only by magnetic attraction. The magnetic attraction is achieved by the fact that one of the ends of the scraper head and the guide strip which are turned toward one another have a magnet and the other has either a magnet or a material which can be magnetized by the magnet of the respective counterpart. In this way, the scraper head and the guide strip can be moved synchronously and in parallel at a distance from one another. This has the advantage that the scraper head can be placed into the cell culture vessel before a cell culture is started and can be sterilized together with it thereby eliminating the risk of contamination due to a cell culture harvesting device later being placed into the cell culture vessel. Furthermore, the scraper head can have a net-like collection container arranged on it which collects the cells lifted off the growth surface of the cell culture vessel in a manner that avoids damage to the cells.