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:
Aug. 07, 2001
Filed:
Apr. 21, 1999
Hiroshi Kuriyama, Shimosuwa-machi, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
The structural complexity of conventional transfusing devices is eliminated, and it is made possible to supply a minute amount of liquid medicine with high accuracy with a simple structure, whereby a portable transfusion pump is realized. A cylindrical rotary drive member (,) equipped with a rotation shaft (,) is arranged opposite to a support plate (,), and a liquid supply tube (,) is arranged between the support plate (,) and the rotary drive member (,). On the outer peripheral surface of the rotary drive member (,), a pressing protrusion (,) extending spirally around the axis is formed integrally. A flexible sheet (,) is provided between the rotary drive member (,) and the liquid supply tube (,). The upper and lower ends of this sheet (,) are directly or indirectly fixed to a base (,) and the support plate (,).