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(12) PATENT APPLICATION PUBLICATION (21) Application No.01238/DELNP/2004 A
(19) INDIA
(22) Date of filing of Application :07/05/2004 (43) Publication Date : 16/03/2007
(54) Title of the invention : NEEDLLESS INJECTOR
(51) International classification :A61M 5/30 (71)Name of Applicant :
(31) Priority Document No :60/338169 1)MASSACHUSETTS INSTITUTE OF TECHNOLOGY
(32) Priority Date :26/10/2001 Address of Applicant :77 MASSACHUSETTS AVENUE,
(33) Name of priority country :U.S.A. CAMBRIDGE, MA 02139, UNITED STATES OF AMERICA U.S.A.
(86) International Application No
:PCT/US02/33545 (72)Name of Inventor :
Filing Date
:18/10/2002 1)AIMEE B. ANGEL
(87) International Publication No :WO 03/039635 2)IAN W. HUNTER
(61) Patent of Addition to Application Number
:NA
Filing Date
:NA
(62) Divisional to to Application Number
:NA
Filing Date
:NA
No of Pages : 14 No of Claims : 51
(57) Abstract :
An injector includes a housing having a chamber for holding a liquid formulation of an active principle to be injected into a biological body and an output
port in fluid communication with the chamber through which the liquid formulation is injected. A piston is positioned within the housing, and includes an
end portion with substantially the same shape as the chamber. A magnetic force draws the piston and housing together to expel the liquid formulation out of
the chamber through the output port.
The Patent Office Journal 16/03/2007 5623